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    Statistical analysis of major chemical work safety accidents in recent 20 years
    LI Min, ZHU Baijian, CHEN Tingwei, HE Shan, SHI Shiliang, LU Yi
    China Safety Science Journal    2024, 34 (11): 43-50.   DOI: 10.16265/j.cnki.issn1003-3033.2024.11.0437
    Abstract1486)   HTML27)    PDF(pc) (9483KB)(288)       Save

    In order to reduce the number of accidents, casualties and enhance the ability to control the level of accident hazards, and to study the general characteristics and hidden patterns of heavy and large safety accidents in China's chemical production industry, this paper used statistical analysis to comprehensively analyze 41 heavy and large accidents that occurred from 2000 to 2023 in terms of time, region, production stage, type of accidents, causes of accidents and other elements. The results show that the number of accidents shows a fluctuating upward trend in 2007-2019, and July and August are the high incidence period of accident every year. The number of heavy chemical accidents in East China accounts for 52.2% of the whole country, of which 12 accidents occurred in Shandong Province, accounting for 57.1% of the total. The highest proportion of accidents occurred in the formal production stage of enterprises, accounting for 53.6% of the total. The main types of accidents is container explosion. The domino effect exists in accidents, with heavy domino accidents and large domino accidents accounting for 14.63% and 39.02% of the total accidents respectively. There are more accidents with domino effect in heavy and large accidents than those without domino effect, accounting for 53.65%, of which the casualties of accidents with large dominoes account for 40.1% of the total accidents and casualties. The most frequent cause of accident statistics is the illegal execution of production, accounting for 49.3% of the total, and the resulting accidents with domino effect account for 66.6% of the accidents. In response to the problems analyzed in the above accidents, this paper proposes some measures to improve the management system from three perspectives: the company, the equipment and the employees.

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    Connotation and capacity building of safe development of new quality productivity
    LUO Fanglu, LUO Wuzan
    China Safety Science Journal    2024, 34 (10): 8-16.   DOI: 10.16265/j.cnki.issn1003-3033.2024.10.0616
    Abstract1154)   HTML7)    PDF(pc) (1872KB)(98)       Save

    From the perspective of overall high-quality development and high-level security strategy, in order to realize the integration of new quality and productivity security development, research was carried out on the connotation, basic characteristics and capabilities of new quality and productivity security development. First, based on the triangle model, the connotation of safe development of new quality productivity was explained in combination with specific cases. Secondly, using the method of system engineering, the three-dimensional structural model was constructed, and the essential characteristics of the safe development of new quality productivity were analyzed. Finally, the capacities required for enhancing the safe development of new quality productivity were proposed. The research results indicate that the safe development of new quality productivity should focus on science and technology security, information data security, and risk management in new security fields, which are characterized by basic, overall, dynamic, complex and extensive features. The basic is reflected in the time dimension, the overall, dynamic and complex are manifested in the logic dimension, and the extensive features are embodied in the knowledge dimension. To promote safe development of new quality productivity, it is necessary to enhance strategic ability, leadership ability, collaboration ability, risk management ability, and theoretical innovation ability, corresponding to the three-dimensional structure model.

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    Main achievements of construction engineering safety management: review of safety accidents, safety management system, and relevant literature
    ZHENG Wenbo
    China Safety Science Journal    2022, 32 (10): 8-17.   DOI: 10.16265/j.cnki.issn1003-3033.2022.10.1932
    Abstract1122)   HTML33)    PDF(pc) (3302KB)(737)       Save

    In order to improve the safety management level of construction engineering, the characteristics of construction engineering safety accidents in the world were analyzed, the typical national institutional arrangements were explored, and the achievements and shortcomings of academic research were summarized. The results show that the overall trend of construction engineering safety accidents in the world changed from a large number of accidents with a low fatality rate to a small number of accidents with a high fatality rate, and the number of accidents and fatality rate in China increased first and then decreased, and remained at a low level. More attention has been paid to safety management at the bottom of the system (enterprise and market) in the United States, and design at the top of institutions (laws and organizations) has been more important in China and Vietnam, and both have been tightly controlled in Singapore. Fruitful results in four aspects have been achieved of literature research, safety evaluation indicators have been determined, safety accident occurrence and response mechanism have been explored, safety management investment has been calculated, and safety atmosphere measurement and mechanism have also been analyzed.

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    Revision and application of Chinese version of risk attitude scale
    LIU Jin, SHEN Hao, LIU Zhuohui, CHEN Sitong, XIONG Zhixiang, PAN Chuan
    China Safety Science Journal    2022, 32 (10): 25-30.   DOI: 10.16265/j.cnki.issn1003-3033.2022.10.1479
    Abstract1112)   HTML59)    PDF(pc) (1629KB)(488)       Save

    In order to measure individual risk attitude of and reduce unsafe behavior, the Chinese version of the risk attitude scale was revised to discuss the structure of the scale in Chinese culture. A total of 250 risk attitude questionnaires were distributed and 220 valid questionnaires were collected. The reliability and validity of the questionnaires were analyzed by SPSS software. The results show that the revised risk attitude scale consist of four factors: attitude towards risk acceptance, attitude towards approaching risk acceptance, attitude towards risk avoidance and attitude towards risk rejection. with a total of 32 items, and the cumulative contribution rate is 75.43%. The Cronbach's α coefficient of the scale is 0.796, with good reliability. The chi-square degree of freedom ratio (CMIN/DF) of the scale is 1.832, the increment fitting index (IFI) is 0.905, the comparative fit index (CFI) is 0.904, the root of mean square residual (RMR) is 0.038, and the root mean square error of approximation (RMSEA) is 0.049, indicating that the scale has good structural validity. Through unstructured interviews with experts and related scholars, some items are modified and deleted, and the content validity of the scale is good.

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    Statistical analysis of major coal mine fire accidents in China
    LI Min, LIN Zhijun, WANG Deming, SHI Shiliang, LU Yi
    China Safety Science Journal    2023, 33 (1): 115-121.   DOI: 10.16265/j.cnki.issn1003-3033.2023.01.0457
    Abstract946)   HTML30)    PDF(pc) (9626KB)(238)       Save

    To study the general characteristics and cause of major coal mine fire accidents in China, 360 major accidents from 2000 to 2021 were comprehensively discussed using the statistical analysis method from the dimensions of time, region, location, coal mine ownership, ignition source and external causes. The results show that the fourth quarter is the peak period for major fire accidents. The number of major fire accidents and deaths in Guizhou, Shanxi and Heilongjiang Provinces account for 45.28% and 47.11% respectively. The probability of catastrophic fire accidents in the chamber is the highest, accounting for 52.38% of major accidents in the chamber. Major fire accidents in the coalface show an increasing trend from 2011 to 2021. The major coal mine fire accidents in township coal mines account for more than 60% of the total number of accidents and deaths, but show a gradient descent trend year-on-year and keep basically stable. The proportion of major accidents caused by illegal open flame, self-heating fire and friction impact gradually increases, while the proportion of major accidents caused by electric spark ignition and blasting ignition gradually decreases. Poor management is the main cause of major coal mine fire accidents.

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    Forest fire risk prediction model based on machine learning
    ZHU Xin, LI Jianwei, GUO Wei, BI Sheng, WU Yuefei
    China Safety Science Journal    2022, 32 (9): 152-157.   DOI: 10.16265/j.cnki.issn1003-3033.2022.09.2729
    Abstract819)   HTML33)    PDF(pc) (1377KB)(824)       Save

    In order to reduce the damage caused by forest fires, the forest fire risk was modeled and predicted through a literature review. This paper summarizes the research status of forest fire risk prediction based on the machine learning method, and analyzes and expounds on the selection of forest fire impact factors, the selection of appropriate fire risk prediction models and the model test methods. The results show that the main influencing factors of forest fire risk include the characteristics of combustibles, meteorological factors, terrain, human activities, etc. In the forest fire risk prediction model, the back propagation(BP) neural network method needs to be improved and applied. The SVM method requires high data, the random forest(RF) method has strong universality and high accuracy, and the deep learning method has less research, but the accuracy is high. The commonly used test methods of the model are accuracy, receiver operating characteristic(ROC) curve and area under curve(AUC) value.

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    Unsafe-condition definition and control based on risk
    ZHAO Dongfeng, LIU Shangzhi, WANG Haoshui, CHEN Yifeng, ZHOU Chao, JIU Jiangbo
    China Safety Science Journal    2023, 33 (2): 1-8.   DOI: 10.16265/j.cnki.issn1003-3033.2023.02.2607
    Abstract818)   HTML42)    PDF(pc) (6118KB)(558)       Save

    In order to strengthen the understanding of unsafe-condition, clarify the relationship between unsafe-condition and risk, and better promote the construction of dual prevention mechanisms for enterprises, based on the summary of the existing definitions of unsafe-condition, the definition and exact English expression of unsafe-condition were proposed from the perspective of risk. Through deep analysis of the relationship between unsafe-condition and risk management and control, the significance of redefining unsafe-condition based on risk was illustrated. Combining the problems in the investigation and management of unsafe-condition and the essence of the construction of dual prevention mechanisms, the idea of dynamic management and control of unsafe-condition based on risk was put forward, including taking risk hierarchical management and control as the premise and foundation, carrying out unsafe-condition hierarchical management based on risk evaluation, and finally realizing dynamic monitoring and hierarchical management and control of unsafe-condition by using information technology. The results show that unsafe-condition is an unidentified risk, or an unsafe state where the risk has not been effectively controlled and exceeds the acceptable level of people's risk. Its English expression is unsafe-condition. The investigation and management of unsafe-condition should be carried out based on the idea of risk classification management and control, timely discovering unsafe-condition through the state of uncontrolled risks, and treating unsafe-condition based on the idea of risk management and control, the essence of which is to control risks.

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    Typical fire protection case of lithium iron phosphate battery energy storage system
    LI Lingkun, CHEN Huanjun, LIU Hui, ZHANG Yukui, LI Yao, CHEN Yanqiao
    China Safety Science Journal    2022, 32 (S2): 111-117.   DOI: 10.16265/j.cnki.issn1003-3033.2022.S2.0126
    Abstract766)   HTML21)    PDF(pc) (1748KB)(500)       Save

    In order to solve the fire safety issue of energy storage system caused by thermal runaway of lithium iron phosphate battery, the fire extinguishing mechanism and performance characteristics of several common extinguishants were studied, and a more effective fire extinguishing method was explored and practiced. Firstly, the thermal runaway process and combustion characteristics of lithium iron phosphate battery were summarized. Then, the fire extinguishing mechanisms of extinguishants such as heptafluoropropane, gas-liquid composite extinguishant, perfluorohexone, aerosol and water mist, as well as the effects of fire extinguishing and reignition suppression on the fire accidents of lithium iron phosphate battery were analyzed. Finally, based on the typical fire fighting system case of prefabricated cabin type lithium iron phosphate battery energy storage system in actual work, the system composition and control logic were introduced. The results show that the fire of lithium iron phosphate battery is a comprehensive fire of category A, B and C. Heptafluoropropane, gas-liquid composite extinguishant, perfluorohexanone, aerosol and water mist have their own advantages and disadvantages in terms of fire extinguishing effect including cooling effect, inhibition of reignition and technological maturity, but none of them can simultaneously extinguish open fire and inhibit battery reignition. It is more effective to use the fire extinguishing method of combining perfluorohexone and water.

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    Exploration and challenge research on personnel training for emergency technology and management specialty model in China
    QIAN Hongwei, WANG Mingyue, GUO Jing, YIN Xiangju
    China Safety Science Journal    2022, 32 (11): 9-13.   DOI: 10.16265/j.cnki.issn1003-3033.2022.11.0121
    Abstract754)   HTML10)    PDF(pc) (1480KB)(1034)       Save

    In order to improve the quality of personnel training in emergency technology and management in higher education institutions and to solve the problem of the shortage of professional emergency personnel, the "integrated and streamed education" personnel training mode was proposed in six aspects:enrollment, training and employment, curriculum system, experimental training bases, teaching and research, matching teaching materials and teachers' teams based on the real demand, national policies and discipline laws, and on the basis of tracing the relevant professional literature. The future development of emergency technology and management was prospected from four aspects:breakthrough of specialty construction, basic theory research of specialty, dual track of specialty learning, and frontier topics of emergency science strategy. The results show that the emergency technology and management professions in China are emerging professions, and there are many challenges in cultivating talents. By leveraging the integration channel, considering a professional platform, and setting up two professional teaching directions, it is helpful to integrate the faculty, improve the training mode of professional talents, and broaden the practical needs of the profession.

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    Rise of precision: a review of emergency risk analysis methodology
    LIU Yi, QIAN Jing, FAN Weicheng
    China Safety Science Journal    2022, 32 (9): 1-10.   DOI: 10.16265/j.cnki.issn1003-3033.2022.09.2742
    Abstract724)   HTML13)    PDF(pc) (1855KB)(708)       Save

    In order to improve the timeliness and accuracy of emergency risk analysis, this paper reviewed the development of emergency risk analysis methods through systematic literature insights. The development of emergency risk analysis methods, the research status of technologies, methods, models, and theories supporting quantitative and precise risk analysis, and the difficulties in quantifying complex emergencies and catastrophes were discussed. The results show that the future development trends of emergency risk analysis methods and theories include: studying and proposing methods to optimize qualitative, semi-quantitative, and quantitative models by using information technology such as big data of sensing monitoring and computing, developing emergency risk calculation methods based on data & model & calculation, and developing the ability of accurate risk calculation.

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    Research on disaster and accident trans-regional collaborative governance community based on fsQCA
    SHEN Xia
    China Safety Science Journal    2024, 34 (10): 205-213.   DOI: 10.16265/j.cnki.issn1003-3033.2024.10.0525
    Abstract719)   HTML1)    PDF(pc) (1573KB)(12)       Save

    In order to facilitate the rapid formation of a disaster and accident trans-regional collaborative governance community in response to major emergencies, this study employed fsQCA. It investigated fourteen cases by selecting seven conditional variables across three dimensions: Incentives, mechanisms, and guarantees. These variables included value consensus, existential threats, administrative mobilization, collaborative linkage mechanisms, interest equilibrium mechanisms, legal guarantees, and digital intelligence technologies. The study explored the core influencing factors and the complex causal relationships in the formation of the disaster and accident trans-regional collaborative governance community. Configurational analysis identified three patterns of community formation: party-government-led, value-driven, and crisis-triggered, with each pattern corresponding to typical cases in the case database. The findings reveal that collaborative linkage mechanisms are a necessary condition for the formation of emergency management communities, while the other six variables cannot individually serve as necessary conditions. Optimizing the functionality of collaborative linkage mechanisms can effectively promote the development of trans-regional emergency management communities.

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    Influence of job stress and burnout on unsafe behaviors of construction workers
    ZHOU Jianliang, HU Feixiang, XING Yandong, GAO Jiarui
    China Safety Science Journal    2022, 32 (11): 14-22.   DOI: 10.16265/j.cnki.issn1003-3033.2022.11.2539
    Abstract697)   HTML25)    PDF(pc) (1817KB)(809)       Save

    In order to deeply explore the relationship between job stress and burnout in unsafe behaviors of construction workers, firstly, based on the work characteristics of construction workers and literature research, individual safety cognition and team safety climate were selected as mediating variables. Psychological resilience, psychological detachment and psychological capital were introduced as moderating variables to model the hypothesis of the effects of job stress and burnout on construction workers' unsafe behaviors. Questionnaire research was conducted by drawing on mature psychological scales, using SPSS 26.0 and AMOS 24.0 for reliability and validity analysis, SEM and validation of research hypotheses, and Mplus 8.0 for modeling the moderating effects of psychological moderating variables. The results show that job stress and burnout contribute significantly to construction workers' unsafe behaviors, and job stress is positively correlated with burnout. Individual safety cognition and team safety climate have significant mediating effects between job stress-unsafe behaviors and burnout-unsafe behaviors. Psychological resilience significantly negatively regulates the relationship between job stress and unsafe behaviors, psychological detachment significantly negatively regulates the relationship between burnout and unsafe behavior, and psychological capital significantly negatively regulates the relationship between job stress and burnout, that is, psychological adjustment can effectively reduce the unsafe behavior tendency of workers. It is recommended that construction companies should combine psychological adjustment measures to prevent workers' unsafe behaviors by relieving work stress, reducing burnout, improving individual safety perceptions, and improving the safety atmosphere in the work group.

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    Overview of recognition methods of pedestrian abnormal behaviors in public places
    ZHAO Rongyong, WEI Bingyu, ZHU Wenjie, ZHENG Chengyuan, LI Haonan
    China Safety Science Journal    2024, 34 (2): 83-93.   DOI: 10.16265/j.cnki.issn1003-3033.2024.02.1125
    Abstract695)   HTML17)    PDF(pc) (6468KB)(373)       Save

    The purpose of this research is to clarify the research progress of the theory and technology of pedestrian abnormal behavior recognition in public places. Firstly, with the help of China National Knowledge Infrastructure (CNKI) and the Web of Science (WOS), a broad definition and universal characteristics of abnormal pedestrian behavior in public places were given. The existing research results related to abnormal behaviors were divided into three categories: harmful behaviors, dissociable behaviors and violations. Then, from the perspective of data and technological foundations, the existing abnormal behavior recognition methods were divided into four categories: artificial design, human skeleton, Red Geen Blue(RGB) images and wearable sensors. Secondly, this study sorted out the abnormal behavior datasets of mainstream populations both domestically and internationally, and analyzed the performance of relevant algorithms on the datasets. Finally, the limitations of existing research methods in available datasets and data fusion detection were summarized, and future research directions and optimization suggestions were provided. The results indicate that these four types of abnormal behavior recognition methods have their own advantages and disadvantages. It is necessary to construct a diversified, well-defined and high-quality international benchmark dataset of abnormal behaviors among the crowd. Future research should focus on robust and accurate methods, models, and algorithms for identifying abnormal behaviors, explore multi-dimensional data fusion complementary detection methods, improve the application scenario consistency and adaptability of the theoretical results of abnormal behavior recognition, and eventually enhance the level of public place crowd safety governance.

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    Application of blockchain technology in emergency management: hotspots, challenges and prospects
    FAN Zhongqi, DAI Lin
    China Safety Science Journal    2023, 33 (5): 182-190.   DOI: 10.16265/j.cnki.issn1003-3033.2023.05.1377
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    To effectively clarify the research status of blockchain technology in the field of emergency management, by applying the Preferred Reporting Items for Systematic Reviews and Meta-Analyses review method, a SLR identified 58 topic-related studies from the Web of Science and China National Knowledge Internet journal database. This paper summarized the challenges faced by the application of blockchain technology in emergency management and suggestions for application of blockchain in emergency management were proposed, including perfecting policies and regulations on application of blockchain, fueling development of key blockchain technology, strengthening construction of professional talent team and enhancing coordination of blockchain and other technologies, etc. The results show that the application of blockchain in emergency management is in its early booming stage of development. Based on these 58 studies, three main themes were developed: data management (40.3%), efficiency improvement (40.3%) and concept development (19.4%). These 3 themes can be further subdivided into 8 sub-themes. It presents the need for improving technical functionality, efficient management of emergency data and data security, integrity and data sharing efficiency.

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    Progress and prospect of integrated full-dimensional monitoring and early warning technology for landslides
    CHENG Gang, WANG Zhenxue, LI Gangqiang, ZHU Honghu, SHI Bin
    China Safety Science Journal    2023, 33 (1): 105-114.   DOI: 10.16265/j.cnki.issn1003-3033.2023.01.1144
    Abstract680)   HTML13)    PDF(pc) (7358KB)(432)       Save

    In order to deal with the superposition effect of human engineering activities and natural geological processes under the complex and changeable geological environment in China, the limitations of single monitoring means in characterizing the landslide hazard evolution process was broken to realize the early identification of landslide hazards and accurate early warning of disasters. Firstly, this paper generally describes the current research status of full-dimension monitoring and early warning technology of integrated monitoring for the air, space, ground, and interior. Then from the aspects of early identification and emergency monitoring of potential hazards, multi-source and multi-dimensional integrated intelligent monitoring, cross-monitoring of new materials and new processes, and monitoring of submarine landslide based on DAS(Distributed Acoustic Sensing) technology. The achievements of theory, technology, and application in landslide monitoring and early warning in recent years are summarized. Finally, based on the limitations of various monitoring technologies, the challenges and development trends of current landslide monitoring are prospected. The research shows that various technologies' application conditions, advantages, and disadvantages are obtained through the comprehensive comparison of landslide integrated full dimension monitoring and early warning technologies. However, the difference in various monitoring technical indicators often leads to missing and miscalculating monitoring data. In the future, the research should focus on early warning criteria and system modeling.

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    Safety risk assessment for low and medium altitude general aviation flight plans
    HUANG Jingyang, PAN Xuan, FU Xiaorong, GAO Jianwei, PAN Weijun
    China Safety Science Journal    2023, 33 (12): 23-30.   DOI: 10.16265/j.cnki.issn1003-3033.2023.12.1873
    Abstract675)   HTML8)    PDF(pc) (3934KB)(203)       Save

    To promote the air safety of low and medium altitude general aviation, a safety risk assessment system for low and medium altitude general aviation flight plans was established. Firstly, combined with the regulations and policies, safety factors of general aviation flight plans were investigated to obtain the risk assessment indicators, which included the complexities of flight plans, the completeness of equipment, the sites and heights of obstacles, the conflicts of flights, and personnel and environmental conditions. Secondly, the BWM was utilized to process the evaluation information of indicator importance preference, and thus the weights of risk assessment indicators were determined. Thirdly, a series of risk computation models were developed according to the characteristics of indicators based on flight plan information. Finally, the total risk value was calculated and classified into five risk levels from very low to very high, and the risk assessment system for low and medium altitude general aviation flight plans was developed. The results show that the indicator of pedestrian risk has the biggest weight and the indicator of flight plan complexity risk has the smallest weight by using the proposed method. The indicators with high risk of a general aviation flight plan are the complexity of flight plan, the collision of flights and the dispatch release. The total risk value is 0.088 and the risk level is the lowest level. The flight plan is the optimal choice through comparing the total risk values.

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    Research and practice on construction of double prevention mechanism in large enterprises:taking COFCO Corporation as an example
    CHEN Zhigang, YAN Li, WANG Haojie, REN Yanqing
    China Safety Science Journal    2023, 33 (3): 27-34.   DOI: 10.16265/j.cnki.issn1003-3033.2023.03.1402
    Abstract673)   HTML12)    PDF(pc) (2972KB)(500)       Save

    In order to solve the problem of multi-level safety management and layer-by-layer attenuation in large enterprises, improve the efficiency of safety management, and effectively curb the occurrence of various production safety accidents, combined with the characteristics of production and operation of COFCO Corporation and the reality of safety management, according to the general principles of headquarters coordination, professional company responsibility and grass-roots enterprise landing, this paper explored the basic framework and main tasks of the construction of dual prevention mechanism in large enterprises, put forward the classification standards of safety risks and hidden dangers, and established the safety risk control outline of industral chain as the core. Based on the whole chain, whole process, whole staff and all-round, "four-wide" risk classification control and hidden danger investigation and management mechanism was also founded. The results show that "four wide" dual prevention mechanism can accurately understand the base of safty risks of large enterprises, systematically implement safety risks control measures and dynamically and continuously improve them, and ensure that safety risks are always controllable.

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    Exploring "two lines and one frame" education mode for curriculum politics of safety discipline in colleges and universities
    TONG Ruipeng, WANG Lulu, CHEN Xingbang, WANG Leyao, AN Yu
    China Safety Science Journal    2022, 32 (10): 1-7.   DOI: 10.16265/j.cnki.issn1003-3033.2022.10.0614
    Abstract663)   HTML7)    PDF(pc) (1646KB)(330)       Save

    In order to effectively carry out the construction for curriculum politics of safety discipline, and to promote the organic unity of discipline knowledge transmission, value shaping, and ability cultivation, research on the essential connotation and education mode for curriculum politics of safety discipline was conducted. Firstly, the implication and specificity for curriculum politics of safety discipline were identified. Secondly, the concept of "two lines and one frame" education mode for curriculum politics of safety discipline was put forward, which was applied at China University of Mining and Technology-Beijing. The results show that the curriculum politics of safety discipline can be understood as the infiltration of ideological and political education in the teaching of safety discipline courses. The knowledge line of the safety discipline and the logical line of political education are the important support for the construction of the mode. The objects of talent cultivation, education strategy, evaluation and optimization of educational effect are the basic elements of creating a pattern of the curriculum politics of safety discipline. Besides, by applying the mode, it has been able to satisfy the needs of moral education in safety discipline and improve the quality of talent cultivation.

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    Generation mechanism of weak prevention in process of accident risk governance
    ZHANG Jian, HU Chunyan
    China Safety Science Journal    2024, 34 (12): 24-33.   DOI: 10.16265/j.cnki.issn1003-3033.2024.12.0580
    Abstract635)   HTML3)    PDF(pc) (2747KB)(69)       Save

    In order to promote the precise governance goals of accident risks, a research method combining process-tracking based on actor network theory and case comparative analysis was adopted to study the weak prevention generation mechanism in the process of accident risk governance. Firstly, the technical environment for analyzing the evolution process of accident risk was clarified, including prepositive contexts, structural scenarios, and developmental circumstances, as well as the analysis logic based on Lens Model and dimensions of time, space, and structure, to provide a research foundation for the integrity analysis of accident risk production process. Secondly, based on the case comparative analysis of the tracking of the interaction process between different types of actors and risks, the role change picture of the core actors, homeowners and rainstorm, in the process of accident/disaster risk governance and accident/disaster generation was presented integrally. Finally, a comparative analysis and reflection of case studies based on tracking the interaction between different types of actors and risks were summarized, and the essence and generation mechanism of weak prevention in the process of accident risk governance were proposed. The results indicate that the mixed interaction between human and non-human actors can continuously activate the emergence and mutual construction process of new actors, new intersectionality, and new vulnerabilities in the system, subsequently resulting in the non-stationary evolution of accident risk production environment and risk structure, which leads to intervention failure and recurrence of weak prevention in the process of accident risk governance.

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    Gas station unsafe behavior detection based on YOLO-V3 algorithm
    CHANG Jie, ZHANG Guowei, CHEN Wenjiang, YUAN Diping, WANG Yongsheng
    China Safety Science Journal    2023, 33 (2): 31-37.   DOI: 10.16265/j.cnki.issn1003-3033.2023.02.0298
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    In order to control the fire and explosion risk target of gas station, an unsafe behavior detection model of gas station based on YOLO-V3 algorithm was proposed by combining accident statistics and fault tree analysis,. Firstly, on the basis of collecting 90 gas station fire and explosion accidents, the ignition sources of gas station fire and explosion accidents were statistically analyzed. Secondly,. the fire and explosion fault tree of gas station was constructed, the structural importance of each basic event was calculated, and the unsafe behavior with high risk of gas station was determined. Then, the image data of unsafe behavior of gas stations were collected by field collection and simulation, and the image data set of unsafe behavior of gas stations was constructed by data enhancement method. Finally, based on the deep learning method, the unsafe behavior detection model of gas station was constructed, and the final model was obtained after 1000 training iterations. The results show that the unsafe behaviors that cause fire and explosion accidents in gas stations mainly include smoking, calling and so on. The average detection accuracy of the trained detection model for smoking, calling and normal behavior detection categories on the test set is 67%, 85% and 77%, respectively, and the average detection accuracy of the model is 84%.

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