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Review on resilience management of urban infrastructure system BI Wei, TANG Yuchun, MAO Tingting, SUN Xinhong, LI Qiming China Safety Science Journal    2021, 31 (6): 14-28.   DOI: 10.16265/j.cnki.issn 1003-3033.2021.06.003 Abstract （863）      PDF（pc） （2683KB）（4686）       Knowledge map    Save In order to explore significance of infrastructure systems in urban disaster prevention and mitigation from a resilience perspective, related research on resilience management method of urban infrastructure systems was reviewed. Firstly, 576 related literatures were screened out from core collection of Web of Science. Research status of urban infrastructure system resilience management was comprehensively analyzed from aspects of journal source, publication year, country, infrastructure type and disturbance type. Then, concept of resilience as well as its connection and difference with reliability, vulnerability and sustainability were defined, and key issues in resilience management were summarized. The results show that studies on resilience of urban infrastructure system have been getting increasing attention in the past decade, and of it, transportation infrastructure and natural disturbances have been studied most. Certain achievements have been made for such research in identification, assessment, improvement and simulation, yet it is necessary to strengthen resilience theory, explore quality assessment methods, and study coupling disturbances and internal interdependency of infrastructure system. Reference | Related Articles | Metrics | Comments（0）

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Multi-objective optimization design for safety system based on isolation-inoperability competing failure mechanism ZHAO Jianqiang, XIONG Yanming, ZHANG Youjian China Safety Science Journal    2020, 30 (6): 1-7.   DOI: 10.16265/j.cnki.issn1003-3033.2020.06.001 Abstract （2067）      PDF（pc） （1740KB）（3375）       Knowledge map    Save In order to avoid single indicator-based design flaw, a multi-objective optimization design method of safety system based on isolation-inoperability competing failure mechanism was proposed. Considering that the core of this method was thresholds setting of isolation component and inoperability component, three performance indices, including PLOAS, reliability loss, mass cost, were utilized to express influence of thresholds setting on system safety, reliability, and mass respectively. On this basis, a relevant multi-objective optimization function was established, and linear weighted method was applied to converse multi-objective optimization problem to a single one. The results show that the proposed method is suitable for solving multi-objective optimization problem based on isolation-inoperability competing failure mechanism, and Pareto solution sets can be obtained not only for three objectives optimization problem, but also for two objectives optimization problem under strong restriction of safety. Reference | Related Articles | Metrics | Comments（0）

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Study on construction of risk portrait index system for airline pilots WANG Lei, JIANG Yin, TAN Wei China Safety Science Journal    2020, 30 (11): 13-21.   DOI: 10.16265/j.cnki.issn 1003-3033.2020.11.003 Abstract （503）      PDF（pc） （1837KB）（3193）       Knowledge map    Save In order to quantify risk behaviors of airline pilots and its influencing factors, dimensions of pilot risk portrait were defined through literature synthesis and expert evaluation method. Then, questionnaire of airline pilots risk portrait index system was compiled and implemented among senior pilots of airlines, for which 116 valid samples were obtained. Finally, questionnaire's reliability and validity were tested by exploratory factor analysis(EFA), system effectiveness was examined by confirmatory factor analysis(CFA), and impact importance of each index was determined by adopting effective index combination weighting method. The results show that pilot risk profile, as an assessment method based on big data theory, can effectively quantify personal risks of pilots. And its index system includes six dimensions, namely pilot ability, skills, style, social risk, personality, physical and mental status, and 20 indexes. Among them, risk perception and space perception are the two most important ones. Reference | Related Articles | Metrics | Comments（0）

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Study on causes of accidents in construction of natural gas pipelines SUN Shimei, GAO Xiaodi, SUN He, FU Gui China Safety Science Journal    2020, 30 (6): 8-13.   DOI: 10.16265/j.cnki.issn1003-3033.2020.06.002 Abstract （1690）      PDF（pc） （1456KB）（2538）       Knowledge map    Save In order to prevent natural gas pipeline construction accidents, causes of 32 natural accidents of such were analyzed by using "2-4" model causal factor coding system.16 causal factors involved in the accident were obtained through statistical analysis of 29 factors at 4 levels, and 5 most frequent ones were analyzed in detail. The results show that for all investigated accidents, the major reasons for them are personnel's faulty operation from the category of illegal and unsafe operation, inconformity of external conditions before construction with requirements from unsafe states, insufficient mastery of equipment and material characteristics from safety knowledge, failure to realize importance of construction procedures from safety awareness, unreasonable deployment of on-site safety supervision personnel from safety management structure defect, and continuous rain from natural factors. Reference | Related Articles | Metrics | Comments（0）

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Discussion on relationship between safety management, risk management and emergency management based on Macro-security view TONG Ruipeng, WANG Lulu, LI Hongwei, GAO Ning, AN Yu China Safety Science Journal    2021, 31 (5): 36-44.   DOI: 10.16265/j.cnki.issn1003-3033.2021.05.006 Abstract （1885）      PDF（pc） （2956KB）（2493）       Knowledge map    Save In order to break limitations of relationship analysis between safety management, risk management and emergency management, and to give full play to management effectiveness of them based on perspective of Macro-security, literature review method, speculative method and comparative analysis method were used to sort out management connotation and development course of them. Internal relationship was analyzed from five aspects such as research field, theoretical paradigm, responsible subject, management stage and system development evolution. The results show that safety management, risk management and emergency management research fields overlap and respectively focus on accidents, risks and emergencies. Theoretical paradigms are blended, and management basis is interoperable among them. Responsible subjects are the same, and all emphasize participation of all members. There are differences in management stages and focus. Development process of management system is different. Reference | Related Articles | Metrics | Comments（0）

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Research on modelling of safety system emergence and its key issues LIAO Xiuping, WU Chao, WANG Bing China Safety Science Journal    2021, 31 (2): 1-8.   DOI: 10.16265/j.cnki.issn 1003-3033.2021.02.001 Abstract （1407）      PDF（pc） （1977KB）（2155）       Knowledge map    Save In order to promote development of basic theory of safety science, research on emergence of safety system was carried out based on system emergence thought implied in safety issues. Firstly, emergence thinking contained in safety theories was extracted through dialectical analysis, safety system emergence was defined and its conceptual model was established. Then, the concept was analyzed from multiple perspectives through dimensionality reduction analysis on complexity of security system. Thirdly, key issues and directions of safety system emergence research were proposed, followed by summary of their significance to safety system emergence research. Finally, safety system emergence was used to provide some explanation about coronavirus pandemic. The results show that system emergence is an important property of the complex safety system and it is an outcome of complex interrelation within system on the basis of its related concepts. Safety system emergence provides a brand new perspective to study safety issues and deserves deeper and comprehensive research. Reference | Related Articles | Metrics | Comments（0）

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Study on influence of safety risk and hidden danger management on railway safety LI Shuo, YUAN Yingqun China Safety Science Journal    2019, 29 (S2): 99-103.   DOI: 10.16265/j.cnki.issn1003-3033.2019.S2.017 Abstract （838）      PDF（pc） （1455KB）（2077）       Knowledge map    Save In order to eliminate safety risks and hidden danger of railway and realize safe railway transportation, firstly, risk and hidden danger management of various industries at home and abroad was analyzed, and state requirement for establishing a dual prevention mechanism for risks and hazards was described. Then, leading experience of some local governments was introduced in detail, and current situation of railway risk and hidden danger management was explained. Finally, it was pointed out that there were some problems in railway enterprises, such as concept confusion of safety risk and hidden danger, enlargement of risk management, and lack of a safety hidden danger management system.The results show that railway enterprises should improve their risk management system, implement double prevention mechanism, strengthen information construction and adopt other means to promote railway transportation safety. Reference | Related Articles | Metrics | Comments（0）

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Analyzing academic effect of Heimlich's safety theory LI Jie, CHEN Weijiong China Safety Science Journal    2017, 27 (9): 1-7.   DOI: 10.16265/j.cnki.issn1003-3033.2017.09.001 Abstract （512）      PDF（pc） （2844KB）（2067）       Knowledge map    Save In order to know the academic effect impact of the Heinrich's research on safety science, articles citing the Industrial Accident Prevention were analyzed by using the scientometrics methods and visualization techniques. The results show that the book has been cited extensively since its first edition appeared in 1931, that it is cited by authors in more than 50 countries/territories, especially by those in USA, China, and England, that the main institutions citing the book are the Delft Univ Technol and Univ Illinois, that the main authors citing the book are LI Qiming and SWUSTE P, researchers in the fields of construction safety and safety history, that the citations involve mainly the engineering, public, and environmental and occupational health areas, that the citing publications are on safety management, safety performance, construction industry and safety culture, by that the book has a deep influence on authors, territories/institutes, topics and related articles in safety science. Reference | Related Articles | Metrics | Comments（0）

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Governance of urban public safety in context of big data: block chain technology enablement SHI Juan, ZHENG Peng, CHANG Dingyi China Safety Science Journal    2021, 31 (2): 24-32.   DOI: 10.16265/j.cnki.issn 1003-3033.2021.02.004 Abstract （879）      PDF（pc） （1675KB）（2015）       Knowledge map    Save In order to make up for deficiencies of traditional urban public safety governance system and address problems of data isolation, data safety, lack of trust and insufficient public participation in governance process, from a combined perspective of big data and block chain, compatibility of the latter and urban public safety governance in subjects, concepts, technologies and goals was discussed after analyzing concept and basic characteristics of block chain. Then, governance procedure of urban public safety data based on block chain was put forward, and corresponding technical framework and system framework were designed. The results show that block chain and urban public safety governance are highly consistent, and a combination of big data and block chain can promote innovation of governance system and improve modernization of public governance. Reference | Related Articles | Metrics | Comments（0）

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Identification method of bus exposure risk under public health emergencies: taking Shenzhen's fight against COVID-19 as an example JI Xiaofeng, WU Yaxin, MAO Runcai, ZHANG Qi China Safety Science Journal    2021, 31 (2): 89-98.   DOI: 10.16265/j.cnki.issn 1003-3033.2021.02.013 Abstract （520）      PDF（pc） （4106KB）（2007）       Knowledge map    Save In order to quantitatively assess bus exposure risk under public health emergencies, based on multi-source data of public traffic network, traffic analysis zones and COVID-19 epidemic information, three research scales of bus station, traffic analysis zones and epidemic sites were considered, and a multi-scale identification method of bus exposure risk was proposed by integrating network structure of public traffic topology model, network of public traffic central model and kernel density analysis. Then, verification analysis was conducted with Shenzhen as an example. The results show that spatial distribution pattern of bus station exposure risk presents a "multi-center-circle" structure, with high-exposure risk stations mostly being transportation hub, shopping mall and so on, accounting for 26.40%. Traffic analysis zones with high-exposure risk are mainly distributed in industrial, commercial and residential clusters, which makes up for 32.84%. Epidemic sites with high-exposure risk are mainly concentrated in urban core areas, accounting for 28.92%. Reference | Related Articles | Metrics | Comments（0）

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Analysis of direct cause of accident and relationshipbetween hazard and hidden danger FU Gui, ZHANG Shijie China Safety Science Journal    2018, 28 (5): 1-5.   DOI: 10.16265/j.cnki.issn1003-3033.2018.05.001 Abstract （1513）      PDF（pc） （1439KB）（1973）       Knowledge map    Save In order to correctly understand what are the direct causes of an accident and facilitate enterprises to establish the dual-prevention mechanism that has been promoted in China work safety management currently.An accident case was introduced and a clear definition of accident was put forward.The accident was decomposed into several events,and the direct causes of the accident were analyzed.The contents of hazard and hidden danger and the relationship between them were analyzed according to the current domestic and international regulations and standards and the theory of accident causation.The results show that the direct causes of an accident can be unsafe acts and unsafe conditions,or energy and its exchange,that an accident,accident causes and accident consequence are corresponding events respectively,that both hazard and hidden danger are causes or potential causes of an accident,and that there are three views on the relationship between hazard and hidden danger,including equivalent,inclusion and parallel,and the advantages,disadvantages and compliance are different,and among them,the view taking hazard as hidden danger is in accordance with the current regulations and standards. Reference | Related Articles | Metrics | Comments（0）

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Research on stacking angle of coal particles and parameter calibration on EDEM WEN Xiaojiang, FANG Feifei, LIU Yingke, LI Jian China Safety Science Journal    2020, 30 (7): 114-119.   DOI: 10.16265/j.cnki.issn1003-3033.2020.07.017 Abstract （450）      PDF（pc） （1900KB）（1944）       Knowledge map    Save In order to make numerical simulation results on EDEM in better agreement with flow characteristics of coal particles, orthogonal experiments of particle-particle contact parameters calibration were designed and a calibration method was proposed based on stacking angle of particles. Then, optimal level of parameters and significance of their impact on stacking angle were analyzed by utilizing range analysis and variance analysis methods. The results show that stacking angle of 550-600 μm coal particles is 33.33°, and rolling friction coefficient induces most significant influence on it, followed by coefficient of static friction and that of restitution. Moreover, when coefficient of restitution, static friction and rolling frction is 0.3, 0.5 and 0.1 respectively on EDEM, stacking angle of coal particles will be 30.13° with a relative error of merely 0.66%, indicating that is an optimal contact parameter combination. Reference | Related Articles | Metrics | Comments（0）

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Analysis of causes of accidents in chemical industry based on HFACS model WANG Jing, FAN Yunxiao, GAO Yuan China Safety Science Journal    2018, 28 (9): 81-86.   DOI: 10.16265/j.cnki.issn1003-3033.2018.09.014 Abstract （674）      PDF（pc） （1818KB）（1846）       Knowledge map    Save In order to reveal the vulnerability of safety management systems in Chinese chemical industry, firstly,based on the characteristics of chemical accidents,the specific manifestations of each cause category in HFACS were identified. Then ,HFACS model was supplemented,and an analysis of causes of accidents was made using the supplemented HFACS model on the basis of data on a certain chemical enterprise's 102 accidents occurred in 2012-2016. Finally, corresponding improvement and control measures were proposed to prevent chemical accidents in the future.The results show that the unsafe behavior of employees is mainly manifested in the routine violations and skill-based errors, and its main cause is lack of risk assessment for equipment or process, that the root causes of the operator's unsafe behavior are the poor concentration and vigilance of operator in adverse mental state factors, and without wearing PPE, that main forms of unsafe supervision are lack of providing both safety supervision and risk assessment,and that organizational influence factors are mainly manifested in lack of a safety climate. Reference | Related Articles | Metrics | Comments（0）

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Risk assessment of instrument transition flight training CHEN Huaqun, LIU Junjie China Safety Science Journal    2020, 30 (6): 64-70.   DOI: 10.16265/j.cnki.issn1003-3033.2020.06.010 Abstract （710）      PDF（pc） （1918KB）（1737）       Knowledge map    Save In order to improve safety of instrument flight training for student pilots, training procedure and a risk assessment method based on instrument flight rules and aviation operation control theory were proposed, and a model algorithm based on airspace collision risk and route safety obstacle clearance was built. Then, a complete assessment process of instrument flight release was established, risk evaluation process and index system for procedure implementation were determined, and instrument flight training was carried out according to route transportation flight mode. Finally, the algorithm was verified with classic training test of Red Deer Base in Canada as an example. The results show that this model algorithm based on collision risk and obstacle clearance can systematically analyze relative elements and realize quantitative risk assessment of training content in all sessions Reference | Related Articles | Metrics | Comments（0）

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Study on mental health status and influencing factors of university students during COVID-19 LIU Haijuan, CHEN Ju, HE Ziming China Safety Science Journal    2021, 31 (5): 168-173.   DOI: 10.16265/j.cnki.issn1003-3033.2021.05.025 Abstract （1890）      PDF（pc） （1264KB）（1706）       Knowledge map    Save In order to do a good job of mental health education for university students under COVID-19 epidemic,DASS-21 scale was applied to measure undergraduates'mental health status. An internet-based questionnaire was taken by 6 157 undergraduates to measure their mental health status. The results show that there are some symptoms of stress, anxiety and depression in university students. University students whose family economic status is poor and whose family economic status is affected by COVID-19 epidemic have obvious symptoms of anxiety and depression. Stress, anxiety and depression symptoms are most severe among students with severe physical and mental illness. Reference | Related Articles | Metrics | Comments（0）

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Research on mediating effect of express way accident duration based on text information CHEN Jiaona, JIN Yinli, TAO Weijun, LI Daofeng China Safety Science Journal    2023, 33 (4): 155-162.   DOI: 10.16265/j.cnki.issn1003-3033.2023.04.0826 Abstract （200）   HTML （2）    PDF（pc） （2138KB）（1643）       Knowledge map    Save In order to explore the internal coupling relationship of the influencing factors of traffic accident duration and reveal the mechanism of text information in the chain transmission process, a keyword importance analysis method based on word frequency-inverse text frequency (TF-IDF) model was proposed by using natural language processing technology and random forest algorithm. At the same time, a multiple mediating effect model of highway traffic accident duration is established, and the Bootstrap sampling method of product coefficient was used to test the mediating effect. The significance of text features in parallel mediating path and two-level chain mediating path was tested respectively, and the strength of mediating effect was calculated. Taking 3 046 traffic accident records of expressways in Shanxi Province as an example, the results showed that in the influence path of duration, there is a partial chain mediating relationship between accident type and month, and the mediating effect accounts for 11.868%. There is a complete chain mediating relationship between accident type and weather, location and accident range, and the mediating effect accounts for 100%. The number of characters and the number of reports are significant mediating variables in the specific path. The number of reports is completely mediated by the type of mediating effect of the weather on the duration. The number of characters is completely mediated by the type of mediating effect of the accident range on the duration. The impact of the period on the duration is 7.075% through the number of characters. The two-level chain mediating path of specific keyword sets exists. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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An model for evaluating urban resilience to rainstorm flood disasters CHEN Changkun, CHEN Yiqin, SHI Bo, XU Tong China Safety Science Journal    2018, 28 (4): 1-6.   DOI: 10.16265/j.cnki.issn1003-3033.2018.04.001 Abstract （769）      PDF（pc） （1466KB）（1623）       Knowledge map    Save In order to quantitatively assess the city's ability to cope with rainstorm flood disasters, the authors devoted themselves to building an evaluation model based on resilient theories and TOPSIS. An urban resilience evaluation index system containing 3 first level indexes and 25 secondary indexes was established after considering the three attributes of resilience: resistance, recovery capability and adaptive capacity. Based on TOPSIS improved by KL formula, the KL-TOPSIS comprehensive evaluation model of urban resilience was built. The relevant data on Wuhan city from 2009 to 2015 were taken as an example, this model was used to evaluate the Wuhan urban resilience to rainstorm flood disasters. The result shows the model can give the level changes of urban resilience, resistance, recovery capability and adaptive capacity in a certain period of time, and that based on the comparative analysis of these, the weak link in the city to cope with rainstorm flood disasters can be found out, and the strengthening-resilience suggestions can be put forward. Reference | Related Articles | Metrics | Comments（0）

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Network model establishment and analysis of tower crane safety accident causes ZHANG Wei, ZHANG Xiao, XUE Nannan, ZHAO Tingsheng China Safety Science Journal    2020, 30 (12): 1-7.   DOI: 10.16265/j.cnki.issn 1003-3033.2020.12.001 Abstract （766）      PDF（pc） （2588KB）（1586）       Knowledge map    Save In order to identify critical causes and paths of tower crane accidents in construction engineering, a causation analysis method was proposed based on complex network. Firstly, accident causes were classified into 6 subsystems and 34 factors based on literature review and system thinking according to relevant laws, regulations and standards about tower crane safety. Then, with empirical data of 194 tower crane accident reports from relevant department in China, an accident causation network model of tower crane was established with causes as nodes and correlations among them as edges. Finally, statistical indicators of the model, such as degree, strength and shortest path, were calculated and analyzed, and nine critical causes, three pairs of strongly related causes and three key causation paths were identified. All these causes and paths can be taken as priorities during practice of tower crane safety control. Reference | Related Articles | Metrics | Comments（0）

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Research on gaugesafety of overhead contact line equipment WANG Zhigang, MA Jinxin, LIU Guijun China Safety Science Journal    2019, 29 (S1): 74-80.   DOI: 10.16265/j.cnki.issn1003-3033.2019.S1.015 Abstract （470）      PDF（pc） （1646KB）（1561）       Knowledge map    Save In order to standardize the management of the OHE gauge and ensure its safety, the meaning of OHE gauge, security risks and recent OHE intrusion accidents were analyzed according to the problems of power supply safety and railway transportation order threatened seriously by OHE intrusion accident. The shortcomings in the understanding and the problems existing in management were pointed out, and corresponding suggestions were given. The results show that the problems of OHE gauge are the majority of OHE accidents and the invasion of foreign objects is the main cause. The OHE gauge is not defined in various regulations and standards. There are some limitations in understanding the mast gauge as OHE gauge, while bringing the factors related to the gauge, such as the mast gauge, the height of contact wire, the stagger, the insulation gap and so on, into the scope of OHE gauge is beneficial to the unified management. Reference | Related Articles | Metrics | Comments（0）

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Structural equation model between safety accidents and network capability of construction enterprises ZHANG Jianshe, ZHANG Wenyu, CHENG Ruiya, LUO Chunyang, WANG Tianxing China Safety Science Journal    2020, 30 (6): 57-63.   DOI: 10.16265/j.cnki.issn1003-3033.2020.06.009 Abstract （592）      PDF（pc） （2843KB）（1554）       Knowledge map    Save In order to investigate how safety accidents affect network capability of construction enterprises, connotation of network capability was defined and it was divided into five dimensions, network vision, network construction, network management, network learning and emotional embedding. Then, hypothesis of relationship between safety accidents and network capability was put forward, data were collected through questionnaire survey and empirical analysis was made using SEM. The results show that safety incidents have a significant and direct impact on network vision, network construction, network management and emotional embedding, among which influence on network vision and emotional embedding is greater than that on network construction and network management. And they exert a significant and indirect impact on network learning through intermediary role of network vision and emotional embedding, among which that role of emotional embedding is greater than that of network vision. Therefore, construction enterprises can reduce impacts of safety accidents on network capacity through strategic planning of network in time, strengthening coordination between organizations and emotional ties. Reference | Related Articles | Metrics | Comments（0）