China Safety Science Journal

Unsafe behavior of knowledge miners and experience miners

CHENG Lianhua, ZHAO Shuai, WU Feng, GUO Huimin, SHEN Kun

2017, 27(12): 1-7. doi:10.16265/j.cnki.issn1003-3033.2017.12.001

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With an aim towards exploring the mechanism of USB of miners different in education degree and seniority, miners were divided into two types, knowledge type and experience type. Two conceptual models were built for the relationships between the two types of miners and USB, with SFE used as a regulating variable, with self-worth reinforcement (SWR) and external benefit reinforcement (EBR) used as mediating variables, basing on the social cognitive theory. The models were validated by using SEM. The results show that KMs prefer to expect SWR and act safely under the action of it, EMs prefer to expect EBR and perform USB under the action of it, moreover, EMs have a directly positive impact on USB. EMs' SFE positively regulates the relationship between EBR and USB, and KMs' SFE negatively regulates the relationship between SWR and USB.

Application of adaptive neural network in FPSO fire warning

HU Jinqiu, TANG Jingjing

2017, 27(12): 8-13. doi:10.16265/j.cnki.issn1003-3033.2017.12.002

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To achieve fire early warning and accurately locate the fire source for FPSO units, a real-time monitoring fire warning method based on adaptive neural network was developed, in view of slow convergence and easy to trap in the local extreme points and other issues for the traditional neural network in the fire warning. For developing the method, the traditional neural network was improved by adding momentum and adaptive learning rate, and the network model was trained according to FPSO fire accident data. The fire situation and location were predicted according to the real-time temperature monitoring data. Then, taking process configuration module I area of FPSO platform as an example, an adaptive neural network model was built for real-time monitoring fire warning. A fire scene was set by using the FLACS, and the temperature monitoring data after fire were input into the real-time monitoring fire warning model. The results show that the output fire source coordinates of the fire warning model drop in the combustion area simulated by FLACS.

Flame-retardant properties of polyurethane insulation materials modified collaboratively

WANG Shengcheng, ZHANG Yunfeng, LU Ligang, ZHANG Zhen

2017, 27(12): 14-19. doi:10.16265/j.cnki.issn1003-3033.2017.12.003

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In order to improve the flame-retardant properties of polyurethane insulation materials, the polyurethane material was modified based on the high-efficiency of PFR and the non-toxicity of EG. Comparisons were made between the modified polyurethane insulation material and conventional polyurethane material in flame-retardant properties such as heat release rate, thermal weight, oxygen index and other parameters. The results show that the application of phosphorus flame retardant greatly reduces the heat release rate peak of polyurethane insulation materials, defers the ignition time and the peak time of heat release rate, and improves the quality retention rate of polyurethane materials, that the flame retardant effect is best when the mass ratio of three (1,3-two isopropyl chloride) phosphate(TDCPP) and Four(2-chloro ethyl) two diethyl ether two phosphate ester(CR-505) is 1∶1, that when PFR and EG are used together, the synergistic effect is added, and the flame retardant effect of the polyurethane insulating materials are further improved, that compared with the conventional polyurethane insulation material, the thermal stability of modified polyurethane insulation material is better, and that the oxygen index of polyurethane insulation material modified collaboratively by PFR and EG is more than 30%, which means it is difficult to burn.

Experimental study on suppression of gasoline-air mixture explosion in narrow-confined space using polymer mesh

JIANG Xinsheng, XIE Wei, YANG Wei, XU Jiannan, HE Biao

2017, 27(12): 20-25. doi:10.16265/j.cnki.issn1003-3033.2017.12.004

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In order to study the suppression effect of nonmetallic porous materials on gasoline-air mixture explosion in mesoscale confined space, an experiment system of a Φ700 mm×3300 mm round tube was established. A new type of mesh polymer was used as the suppression medium, and explosion suppression experiments were carried out. The experimental results show that the polymer mesh can reduce the maximum overpressure value by 94% and the rate of boosting by 98%, that the polymer mesh, which is used as an explosion suppressor filling the tube according the requirements of the related standard, can effectively weaken the vibration and impact energy during the explosion due to the porous structure and excellent anti-compression performance, and that the polymer mesh can completely prevent the flame from propagating and result in quenching.

Experimental study on minimum ignition temperature of mulberry wood dust

ZHAO Jiangping, WAN Hangwei

2017, 27(12): 26-31. doi:10.16265/j.cnki.issn1003-3033.2017.12.005

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In order to learn ignition sensitivity of mulberry wood dust and guarantee safe production, a standard Godbert-Greenwald furnace apparatus and a hot plate test device were used to carry out experiments on the dust. Influences of particle size,concentration of dust cloud,spray pressure and bulking thickness on the minimum ignition temperature of the dust were studied systematically. The results show that under the test conditions,the minimum ignition temperature of mulberry wood dust cloud decreases from 480 to 450 ℃ when particle size decreases from 80 to 140 mesh. The minimum ignition temperature of wood dust cloud decreases from 490 to 470 ℃ when dust concentration increases from 212 to 1 696 g/m³. When spray pressure increase from 0.02 to 0.1 MPa,the minimum ignition temperature of wood dust cloud decreases from 500 to 485 ℃. For bulking thickness of 5 mm, when particle size decreases from 80 to 140 mesh,the minimum ignition temperature of mulberry wood dust layer decreases from 360 to 325 ℃. For particle size of 100 mesh,the minimum ignition temperature of wood dust layer decreases from 390 to 340 ℃ when the bulking thickness increases from 1 to 7 mm. Within the same particle size range,the minimum ignition temperature of mulberry wood dust cloud is 120 ℃ higher than that of wood dust layer. Therefore, wood processing industry should refer to the corresponding value of the minimum ignition temperature of wood dust when selecting the explosion-proof electrical equipment, and take measures to avoid the accumulation of dust.

Study on failure of horizontal storage tank impacted by flood from different angles

CHEN Wenying, DU Yanyang, MA Jun, WEI Lijun

2017, 27(12): 32-36. doi:10.16265/j.cnki.issn1003-3033.2017.12.006

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For the sake of preventing horizontal storage tank failure accidents resulting from flood impact in chemical industry parks, theoretical derivation and empirical analysis were carried out to discuss failure of horizontal storage tank impacted by flood from different angles. Firstly, horizontal storage tank failure analysis was accomplished considering flood impacting on the tank with a certain degree, then vulnerability coefficient and attenuation coefficient were defined. Finally, effects of different parameters including tank type, tank level influencing on horizontal storage tank failure under different flood impact angle were analyzed. The results show impact attenuation coefficient increases at first and then decreases when the impact angle θ varies from 0 to π, also, rises to the maximum when θ is π2, that the larger the tank is, the greater the force on the bolts will be, thus the tank will be more likely to fail, and that the higher the storage level is, the smaller the force on the bolts will be, and the safer the tank will be.

Study on reliability-based segmentation of lifetime of ground equipment in launch field

HUANG Jian, CHEN Jingpeng, XU Huimin, LIU Ningyuan, WANG Ning

2017, 27(12): 37-42. doi:10.16265/j.cnki.issn1003-3033.2017.12.007

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In order to improve the accuracy of PSA work of the launch site ground system and overcome the difficulties caused by both the small sample and data loss, a kind of equipment full life segmentation method based on data characteristics was worked out, considering the uneven distribution of equipment failure rules with usage time. For the sake of working out the method, the changes of data accumulation during the period of usage time were analyzed and the three stages of the equipment were determined based on multi-source data. Monte Carlo simulation and life distribution function were used to calculate the reliability of the segmented time point. A certain conventional filling pump was taken as an example to verify the effectiveness of the piecewise method. The results show that the premetaphase point is 31 h, the corresponding reliability is 0.996 5, the middle and late point is 132 h, the corresponding reliability is 0.979 8.

Optimum design of composite material engine hood based on pedestrian head protection

DU Xuejing, WANG Yiqun

2017, 27(12): 43-48. doi:10.16265/j.cnki.issn1003-3033.2017.12.008

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In order to study the pedestrian protection performance of polypropylene composite engine hood, a finite element model was built for an engine hood and pedestrian head impactors were built for children and adults by using ANSA software. Collision risk points were identified according to the requirements of EC 78/2009 directive. The pedestrian protection ability and static stiffness of both the polypropylene composite engine hood and the steel engine hood under the same structure condition were studied by LS-DYNA finite element analysis software. Effects of composition of the composite material on the energy absorption characteristics and the related acceleration values of head impact damage of the engine hood were examined. The hinge was improved. The results show that the new polypropylene composite engine hood has an obvious weight reduction effect under the condition that the rigidity was ensured, and that it can provide better protection to the pedestrian head.

A review of progress in reliability evaluation on district heating system

CAO Shanshan, WANG Peng, SHAN Xiaofang, YAO Yang

2017, 27(12): 49-55. doi:10.16265/j.cnki.issn1003-3033.2017.12.009

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To have a general overview of progress in researches on district heating reliability evaluation and predict the trends in the researches, a systematic and thorough literature review was carried out through Google Scholar. From the perspective of functional characteristics under failure condition, failure state judgment criterion and evaluation index, the advances in researches on district heating reliability evaluation were summarized. The research contents and limitations of 3 evaluation methods, considering structural characteristics, hydraulic characteristics and thermodynamic characteristics under failure condition respectively, were furthermore discussed and analyzed. Finally, the trends in the researches on district heating reliability evaluation were presented. Research results show that the evaluation method considering thermodynamic characteristics under failure condition will be the focal point of the research in the days to come, that improving the accuracy of the model taking into account integrating connectivity of heat users, hydraulic characteristics and thermal inertia of heating network and buildings and the reducing the computational complexity are the problems to be solved, and that the effects of both the multiple failures and the secondary failures on the district heating system need to be studied.

Study on model for system safety risk management and control capability maturity

ZHANG Yudong, LYU Shuran, LIU Fangming

2017, 27(12): 56-61. doi:10.16265/j.cnki.issn1003-3033.2017.12.010

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In order to scientifically measure and hierarchically evaluate the ability of safety risk management and control, and continuously improve and enhance the behavior as well,based on the theory of system safety structure, a SSRMC-CMM system for a complex giant system was established. The quantitative analysis and empowerment of index factors were carried out by DEMATEL and ANP, moreover the ternary interval numbers evaluation model was used to describe the decision making data, and calculate the maturity level of management and control capability. The results show that the ternary intervals quantitative analysis method combines with DEMATEL-ANP, which are applied to SSRMC-CMM, makes it possible to take consideration of the dependence and feedback effects of the index factors, and overcome the problems such as fuzzy quantitative description of evaluation index, which can effectively determine the main factors of improvement and enhancement of system's liability subjects.

Stability of supporting coal pillar for slope highwall mined in lignite surface mine

WANG Dong, JIANG Juyu, HAN Xinping, NAN Cunquan, HE Xigetu

2017, 27(12): 62-67. doi:10.16265/j.cnki.issn1003-3033.2017.12.011

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In order to recover the coal under end slope after mining, theoretical analysis, creep test, numerical simulation and engineering practice are used to study the stability of supporting coal pillar under the condition that highwall machine recovers the coal by the way of holing. With west end slope of Huolinhe North Mine as the engineering background, the necessary condition for the instability of coal pillar is deduced based on mutation theory.The concept of target time strength is put forward based on the service time of supporting coal pillar, supporting coal pillar three days target time strength parameters are determined.Numerical simulation was applied to study coal pillar stability by calculating the range of tensile and shearing plastic zone, reasonable width of coal pillar is determined.Results show that the necessary condition for the instability of coal pillar is the width of the plastic zone is 88% of the coal pillar.Supporting coal cohesion is 0.93 MPa and friction is 17.6°. Reasonable width of coal pillar is determined to be 4 m ,which is proved by engineering practice.

Study on propagation characteristics of ultrasonic wave in coal

WANG Yungang, YANG Tingting, WANG Qiongyang, ZHANG Hongtu, XU Xiangyu

2017, 27(12): 68-73. doi:10.16265/j.cnki.issn1003-3033.2017.12.012

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In order to predict and control coal and rock dynamic disasters better, coal samples of Gengcun coal mine of Yima coal company in Henan province were studied by using an ultrasonic comprehensive test instrument for testing, and the propagation characteristics of ultrasonic wave in coal samples were studied by ANSYS numerical simulation method. The influence of the length of coal sample on the amplitude of ultrasonic longitudinal wave was examined emphatically. The results show that the amplitude of ultrasonic wave is negatively correlated with the coal sample length, at the same ultrasonic frequency in a certain coal sample length range. But outside the range, the coal sample length has no effect on the ultrasonic wave amplitude, that when the ultrasonic frequency increases from 20 kHz to 1 MHz, the ultrasonic reliable detection distance will be shorted from 8.4 to 0.252 m.

Static and dynamic analysis of safety of steel outburst prevention air door

DAI Shuhong, WANG Zhengting, XU Yan

2017, 27(12): 74-79. doi:10.16265/j.cnki.issn1003-3033.2017.12.013

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In order to analyze the safety of a steel outburst prevention air door, a formula for calculating the peak of the load under gas outburst was derived based on mine site data and the theoretical formula. A time course curve equation of the impact load was derived based on the air door pressure data obtained from analog experiments. Static and dynamic characteristics of a steel outburst prevention air door structure under gas outburst were studied by using the numerical simulation method, and a comparison was made between the structure and the brick structure in the mine.The research shows that when the distance between the outburst point and the surface is 1 100 m, steel structure steel plate thickness of 3 mm meets the safety standards, that the stability of steel structure is not as good as the brick structure, but conforms to the safety standard, that in the transient dynamic analysis, the steel structure and the brick structure are similar in the trend in change of stress, and that the safety of the steel air door structure meets the brick structure safety standards.

Variation routine of charge induction in deformation and fracture of composite coal-rock under load

YANG Zhen, LI Xin, QIU Bin, ZHAO Yangfeng, SU Xiaoping

2017, 27(12): 80-85. doi:10.16265/j.cnki.issn1003-3033.2017.12.014

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In order to effectively extract charge induction precursor of coal-rock dynamic disaster and improve the prediction accuracy, uniaxial loading fracture experiments were carried out on samples of composite coal-rock taken from a coal mine in Shanxi province at loading rates of 0.1, 0.3, 1 mm/min. Variation law and mechanism of charge induction signal in the process of deformation and rupture of composite coal-rock were studied. The results show that there are significant paroxysmal and discontinuous charge induced impulse precursory signals before deformation and fracture of the composite coal-rock, that the charge induction signal increases with the increase of the loading stress level, and reaches the strongest before the peak stress,that the charge induction signal is the strongest at the loading rate of 0.1 mm/min, that the charge signal of coal sample is more obvious than that of the top plate, and that the charge induction signal is related to the internal rupture, friction and thermal effect.

Preparation of composite expansion material and its application in methane drainage

REN Qingshan, AI Dechun, GUO Mingtao

2017, 27(12): 86-90. doi:10.16265/j.cnki.issn1003-3033.2017.12.015

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To improve the sealing effect of gas-pumped drilling, a kind of drilling sealing material with high swelling rate, rapid coagulation and high strength was developed by mixing portland cement, calcium sulphoaluminate cement and a self-made high-rate expansion agent. The data on the fluidity, solidification time and compressive strength of the material were obtained in the laboratory. Borehole seal comparison experiments were carried out between the material and the common borehole sealing material (marithan). The results show that in comparison with the marithan, use of the material increases the volume fraction of methane by 18%-24%, the pumping rate by 50%-80%, among others.

Study on applicability of different desorption formulas to briquette containing methane

YUE Jiwei, WANG Zhaofeng

2017, 27(12): 91-96. doi:10.16265/j.cnki.issn1003-3033.2017.12.016

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In order to accurately calculate the loss of coal core methane in the process of core extraction, reduce the frequency of coal and gas outburst and the number of casualties, relationship curves between cumulative methane desorption quantity of the former 60 minutes and time were drew based on the data obtained from experiments carried out by using a high and low temperature test device. The authors tried to fit the curves with different desorption formulas.The results show that the type of Ustinov could not be completely 0 ℃ above the desorption data and could fit the data on desorption below 0 ℃, that the fitting effect of K.Winter type is better than that of WANG Youan type or that of SUN Chongxu type, and that fitting effects of R.M. Barrell type, exponential type and B.A. Bolt type are poor, and that WANG Youan type, K.Winter type and SUN Chongxu type are applicable to briquette coal samples containing methane regardless of the temperature they are at.

Influences of different factors on enhancing methane drainage by hydraulic fracturing

FAN Chaojun, LI Sheng, LAN Tianwei, LUO Mingkun, YANG Zhenhua, TAO Mei

2017, 27(12): 97-102. doi:10.16265/j.cnki.issn1003-3033.2017.12.017

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To make clear the influences of different factors on enhancing methane extraction by hydraulic fracturing in coal seam, and ensure the safe mining of coal mine, a unified mathematical model was built for hydraulic fracturing and gas drainage based on the multiphysics coupling theory, involving a hydraulic field, a mechanical field and a damage field. The processes of hydraulic fracturing and gas drainage were simulated by Comsol with Matlab software. The effectiveness of the model was verified by the data obtained in the field test. The influences of borehole-to-borehole spacing, water injection pressure, coal elasticity modulus and in-situ stress on fracturing were quantitatively analyzed. Results show that the fracture breakthrough time of numerical simulation is in good agreement with that obtained in the field test, that the key to effective gas drainage is that the fracturing damage zone can be connected at the drainage borehole, that the fracture breakthrough time increases linearly with elastic modulus and homogeneity of coal seam, increases exponentially with vertical stress and borehole-to-borehole spacing, and decreases exponentially with injected water pressure.

Study on factors affecting strength of tailings backfill body with response surface method

YANG Jian, YIN Tubing, LIU Kewei, LIU Zhixiang, CHEN Chong

2017, 27(12): 103-109. doi:10.16265/j.cnki.issn1003-3033.2017.12.018

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In order to study the comprehensive effects of various factors on the compressive strength of filling body at different curing ages and improve the quality of mine filling, physical and chemical properties of filling materials were analyzed, orthogonal experiments were carried out. A response surface model was built to analyze the interactions between the various factors. The results show that F-value and P-value obtained in the response surface model test are larger than 33.34 and less than 0.000 1 respectively, so the model is effective, that both the increase in mass fraction of solid in slurry and the increase in ratio of cement to sand can effectively improve the compressive strength of filling body, that there is a critical value of the accelerater dosage, that there is a collaborative relationship between slurry solid content and lime sand ratio, and that there is a faint antagonistic relationship between mass fraction of solid in slurry, cement-sand ratio and accelerater dosage.

Assessment of risk of flood damage at slope of pipeline based on combination of entropy method and extension theory

ZHANG Qing, WANG Shengxin, WANG Pengfei, XU Zhen

2017, 27(12): 110-115. doi:10.16265/j.cnki.issn1003-3033.2017.12.019

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In order to prevent flood damage at slope of oil and gas pipelines, it's essential to assess the risk of flood damage. A matter-element model was built for assessing the risk by the extension theory. Correlation functions were calculated for the evaluation indexes. By using the entropy method, values of weight were assigned to the evaluation indexes. So the level of risk was assessed. Then eleven slope gullies located at Gansu Corridor Gaotai were selected as evaluation objects. A comparison was made between the evaluation results calculated by this method and those calculated by using the software of the pipeline companies. The results indicate that the evaluation results obtained by using the extension theory based on the entropy method conform with those obtained by using the software for those eleven slope gullies.

Study on thermal hazard of dimethyl 2,2'-azobis(2-methylpropionate)

WANG Weijun, HUA Min, PAN Xuhai, SHU Chimin, JIANG Juncheng

2017, 27(12): 116-121. doi:10.16265/j.cnki.issn1003-3033.2017.12.020

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To avoid the potential thermal risk of AIBME, the thermal decomposition process of AIBME was studied by DSC. The thermal kinetic parameters of AIBME were acquired by fitting the data with Kissinger equation and TSS. The SADT and the TMRad were calculated based on these parameters. The results show that TSS gives a better performance than Kissinger equation does, that the decomposition reaction involves two stages, and the activation energy of the first stage is 88.44 kJ/mol, the second stage is 113.87 kJ/mol, that the SADT value of AIBME is 30 ℃, and it can decompose at room temperature, and that temperature monitoring should be strengthened during production, transportation and storage of AIBME.

Research on relationships between human resources management, psychological safety and miners' safety behavior

WANG Dan, GUAN Ying, GONG Jingjing

2017, 27(12): 122-127. doi:10.16265/j.cnki.issn1003-3033.2017.12.021

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To further explore the miners' safety behavior path, a theoretical model was built for miners' safety behavior as a function of both human resource management and psychological security from the psychological perspective. Before building the model, two dimensions to human resource management: salary and education training and two dimensions to miners' safety behavior: safety compliance bahavior and participation behavior were identified. 291 effective copies of a questionnaire were collected and analyzed by useing the SEM method.The relationships among human resource management, psychological safety and miners' safety behavior were explored.The results show that both salary and education training have a direct influence on miners' psychological security and safety compliance behavior, but their influence on safety compliance behavior is not significant, and that psychological security plays a partial mediating role in the effect of human resource management on safety compliance behavior and plays a complete mediating role in the effect of human resource management on safety participation behavior.

Thinking about attributes of safety engineering discipline based on its development in Europe

FAN Yunxiao, GAO Yuan, PEI Jingjing

2017, 27(12): 128-133. doi:10.16265/j.cnki.issn1003-3033.2017.12.022

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To identify the differences in construction of safety engineering discipline between China and other countries, this paper analyzed the background and development of university research and teaching devoted to safety in Europe through literature review based on safety science chair (group) in Aston University and Delft University of Technology. Furthermore, a Hall model was built for notions of safety engineering discipline though the three dimensions including time, logic and knowledge. It shows that the chair of safety science was inspired by the transition of safety supervision mechanism from compliance to self-regulation based on goal-setting, and that the discipline of safety science is a separated, systematic multi-discipline drawn from technical backgrounds but beyond them.

Research on optimization of mobilization scheme for passive evacuation from multi-storey apartment

LI Ruoyu, SONG Yinghua, LYU Wei, FANG Danhui

2017, 27(12): 134-139. doi:10.16265/j.cnki.issn1003-3033.2017.12.023

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In view of low efficiency of active evacuation from multi-story apartments, a concept of passive evacuation mobilization for people notification was introduced and a method was worked out for selecting the best notification plan of evacuation. The method was applied to the passive evacuation from the west-9 dormitory in a certain university taken as an example. A simulation comparison in evacuation time was made by using Pyrosim and FDS+Evac between the method and those used in common evacuation schems.The results show that the evacuation time, when the passive evacuation mobilization plane is used, is obviously shorter than those when the common evacuation schems are used, and the plan 3pp4-1 results in the shortest evacuation time, namely 696.8 s, that improvement of familiarity with main exit has a significant effect on the plan with the longest evacuation time, and that there is a logarithmic function relationship between the time delay of opening of the fire door and evacuation time of 95% people .

A grey situation group emergency decision-making method with multiple uncertain preference information

LI Haitao, LUO Dang, SUN Decai

2017, 27(12): 140-146. doi:10.16265/j.cnki.issn1003-3033.2017.12.024

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When it comes to emergency decision-making for unconventional incidents, the problem that multiple uncertain judgment preference information is concomitant will stand in the way. As a solution to this problem, and meanwhile, as a way to improve the efficiency of emergency resource allocation, the authors were aimed at developing a grey situation group emergency decision-making method based on multiple uncertain preference information. Firstly, some frequently-used uncertain preference information expressions were uniformly converted to a normalized utility value expression. Then, the decision-making experience of experts and the quality of their decision information should be considered and combined with OWA operator, and a linear combination algorithm was designed to determine the information aggregation weights, with which the individual preference can be effectively aggregated into group preference. After that, a grey situation group decision-making algorithm was constructed, and it was finally applied to select a satisfactory situation of emergency resource allocation for a large geological disaster in Southwest China. The application result indicates that the method fully considers the uncertainty characteristics of group experts' evaluation, such as subjectivity, fuzziness and pluralism of preference expressions, and the emergency resources allocation result obtained by using this method agrees with actual emergency decision-making mechanism.

A scenario construction based study on emergency evacuation in hazardous chemicals accident

WANG Qiquan, WANG Hongpeng

2017, 27(12): 147-152. doi:10.16265/j.cnki.issn1003-3033.2017.12.025

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In order to effectively control the accident risk in hazardous chemicals enterprises and prevent hazardous chemicals fires and explosions involving hazardous chemicals, a Bayesian and CA coupling model was built based on the data on the "8·12" special fire and explosion accident in Tianjin Port. The accident scenarios were simulated and reconstructed. All aspects of the evolution of the accident were analyzed. The law of accident evolution was explored. Hidden dangers of potential accidents in the storage industry of hazardous chemicals were identified. Based on the ACO, an emergency evacuation model was built to simulate the evacuation of residents in the worst affected communities on the Matlab platform. The best evacuation route was identified. The response time point was calculated for evacuating the surrounding residents and related personnel to the safe area. The results show that according to the results of computer simulation, emergency evacuation routes can be planned, which can improve the efficiency of emergency evacuation could be improved and the accidents impact could be reduced by planning the emergency evacuation routes according to the results of the computer simulation.

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