In order to explore the spatial and temporal evolution characteristics of fire，economy and environment，based on the data of fire，economy and environment in China from 2000 to 2019，a fire-economy-environment coupling coordination model was established to study the coupling development level of fire，economy and environment system. Combined with ESDA method，the spatial and temporal evolution characteristics and aggregation of each subsystem in 31 provinces were studied，and the spatial correlation analysis of fire，economy and environment was carried out based on Moran 'I test. The research shows that the comprehensive development of fire，economy and environment has been well coupled from 2000 to 2019. From the time dimension，the coupling degree and coordination degree showed an upward trend from 2000 to 2019. The coupling degree was affected by the fire comprehensive score，and the coordination degree was affected by the economic subsystem. From the spatial dimension，economic development is the main factor affecting the coupling coordination degree of 31 provinces. From the analysis of the spatial and temporal evolution of the coupling relationship，the provincial coupling degree is aggregated with time，and the coupling coordination degree is random in spatial aggregation. The different effects of fire，economy and environment on coupling coordination lead to different coordination types and spatial aggregation states.

In order to reduce the risk of fire and explosion caused by the anthraquinone process for preparing hydrogen peroxide，a risk assessment was carried out for the extraction and purification process，which is a more hazardous process in the preparation of hydrogen peroxide by anthraquinone process. Firstly，hazard sources of this process were analysed and a fault tree model was established through Freefta software. On the basis of this fault tree model，a dynamic Bayesian network model was drawn using GeNIe software. Secondly，expert scoring method and fuzzy analysis method were used to calculate prior probabilities of basic events in the model，and GeNIe software was used to calculate posterior probabilities of basic events in the model under the set preconditions. Eventually，by comparing change range between prior and posterior probabilities，important basic events were determined，hazard sources causing fire and explosion were revealed，and emergency response technologies were proposed. The results show that four major hazard sources，including pollution caused by degradation products and impurities，generation and increase of side reactions in process，catalyst failure and active chemical properties of hydrogen peroxide，have great impact on fire and explosion during extraction and purification process. It is more effective to develop emergency response technologies for important hazard sources from the perspective of preventing fire spread and liquid evacuation.

In order to understand the influences of personality traits behind drivers' unsafe driving behavior，relevant studies on the relationship between personality traits and driving behavior at home and abroad since 2000 were reviewed. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA) standard，17 688 articles were retrieved from well-known domestic and foreign databases. After removing 3 160 duplicate articles，14 263 irrelevant articles and 198 non-excellent articles，67 excellent articles were finally included in this study. The relationships between different personality traits and unsafe driving behavior in these articles were summarized and sorted out. The results show that the five personality dimensions of the Big Five personality have different relationships with driving behavior. While sensation-seeking and impulsivity are both strong predictors of unsafe driving behavior，the latter has a stronger predictive ability. The direct predictive ability of driving anger on unsafe driving behavior is not strong. Additionally，factors such as normlessness，trait anxiety，altruism and narcissism have influence on unsafe driving behavior，although there is limited research on these. Furthermore，attachment，trait emotional intelligence，collectivism and abnormal personality traits need more tests. Some research results from Chinese samples diverge from the broader body of research，suggesting a need for cross-cultural studies.

In order to improve the safety efficiency of heavy construction machinery installation and lifting operation and improve the visibility of installation and lifting operation personnel，a multi-agent visual accessibility BIM simulation method based on the visual cone method was proposed. The multi-agent visual task of the heavy construction machinery was obtained through the decomposition of the visual task of heavy construction machinery. Taking the installation and dismantling operation of the wk-35 electric shovel as the research object，the multi-agent visual task of hoisting driver，signal operator and cable operator was analyzed，and the multi-agent visual BIM simulation scene of installation，dismantling and hoisting operation was constructed by using Computer Aided Three-dimensional Interactive Application (CATIA) human factor simulation module. The visual cone method was used to calculate the multi-agent visual accessibility value in the process of installation and lifting. The process parameters of the BIM model were adjusted，the trend of multi-agent vision was deduced，and the multi-agent visual accessibility of installation，disassembly and hoisting was evaluated. The simulation results show that the visual accessibility of the lifting driver is poor in the process of lifting and descending，but good in the process of translation. The position of the signal operator and cable man is closely related to their visual accessibility. The visual accessibility of the signal operator is best when the visual field of view just covers the lifting driver and cable man. The cable man needs to constantly adjust his position to achieve the best visual accessibility.

The double prevention mechanism was a widely used risk control system in hazardous chemical fields in China. However，the theoretical framework at underlying and operational levels was missing. Especially，there was a lack of RCA results to guide double prevention. Therefore，VPSB model was proposed by integrating primary-secondary barrier theory and ECF analysis technology. Furthermore，ECF as a typical RCA method represented the causal of a catastrophic event composed of specific primary-secondary barrier failure modes，providing a visualized diagram for the VPSB model. The model was used to identify hazards and RCA for a typical accident scenario in the Texas explosion of British Petroleum(BP) company. Moreover，the failure modes of double prevention related to management measures were investigated. The comparisons of investigation results between the U.S. Chemical Safety Board (CSB) and BP indicated that people's unsafe actions were taken as the direct cause to carry out in-depth cause analysis. Moreover，the focus was human management，and the failure of the safety supervisors and irregular operations of the operators were macroscopically summarized as the root causes. However，the VPSB model focused on near-miss and the process of major accident hazards，and detailed sub-barrier failure modes were used to highlight the fundamental problems of management systems. Specifically，mechanical integrity management had the largest number of problems because management measures were not conducted as required. This study can provide rectification directions and operability recommendations for enterprises to optimize the relevant work content of the double prevention mechanism.

In order to solve the problems such as the danger，the integrity of the train structure and the safety of personnel when the high-speed train was operated in a low-vacuum tunnel，the temperature attenuation characteristics of the high-speed train compartment in a low-vacuum tunnel in a fire were explored by numerical simulation. Then the temperature distribution inside the adjacent carriages was analyzed. Finally，the distribution characteristics of the maximum temperature inside the burning carriage were studied. The results show that the temperature of the burning carriage and adjacent carriage roof decreases exponentially along the longitudinal direction. In adjacent compartments，the power has an effect on temperature attenuation. At low fire source power (0.3-0.6 MW)，the high temperature smoke spread is relatively weak，and passengers in the adjacent carriages are relatively safe. At medium source power (0.7-1.1 MW)，the high temperature smoke spreading is significant，and the temperature abrupt point appears due to the influence of carriage wall and door. At high fire source power (1.2-1.5 MW)，the heat plume intensity is higher，and high temperature smoke spread is relatively less affected by carriage wall and door，and temperature spreading trend in the connecting part of carriage is basically the same as that in the adjacent carriage. The maximum temperature in the carriage is related to power of fire source and distance from fire source to the ceiling，and there is a linear relationship.

In order to investigate the mechanical response of sandstone under cyclic stress from the energy perspective，the loading and unloading tests conducted along three cyclic paths which included an incremental step-by-step increase in initial peak stress at 10 MPa，an incremental step-by-step increase in initial peak stress at 80 MPa，and a constant peak stress maintained at 100 MPa. Subsequently，we analyzed the evolution characteristics of each energy component of sandstone based on the stress-strain curve and energy calculation results，taking into account the number of cycles and peak stress. The results show that as the number of cycles and peak stress increase，the hysteresis loop migrated to the direction of strain increase obviously only in the second cycle at the initial peak stress of 80 and 100 MPa. Different stress cycle paths make the unit volume dissipated energy shows different stage evolution characteristics. The energy values of sandstone change from a quadratic to a linear growth law as the peak stress increases in the hierarchical cyclic loading and unloading way，while in the constant amplitude cyclic loading and unloading way with the peak stress constant at 100 MPa，the unit volume energy and unit volume elastic energy of sandstone show an open downward quadratic decrease trend and the unit volume dissipative energy shows an exponential decrease trend. The effect of cyclic paths on the energy of sandstone in different stress ranges is quite different. In a comparison of the single and the hierarchical cyclic loading and unloading way，the energy difference is less than 10% when the peak stress is 80 MPa，while the energy difference is 22.74%-62.58% when the peak stress is 100 MPa.

To solve the problem of heat damage caused by the continuous extension of coal mining depth，and to reveal the distribution characteristics of the temperature field in the deep-shaft roadway，five kinds of mining thermal insulation materials were selected to carry out the study of thermal insulation and cooling in the deep-shaft roadway，to analyze the effects of different thicknesses of the thermal insulation layer and different initial temperatures of the peripheral rock on the temperature field of the peripheral rock，the radius of the heat-regulating circle，and the temperature change of the wind flow in the roadway，and to analyze the evolution characteristics of the peripheral rock temperature field in the vicinity of the thermal insulation layer. The results show that foam heat-insulating concrete has the best heat-insulating performance and the lowest economic cost. The selection of lower thermal conductivity of the insulation layer helps to improve the thermal insulation effect of the insulation layer，and 5-10 cm is the best thickness of insulation layer，temperature field is consistent with the spatial distribution of peripheral rock layer，anchor spraying layer，and insulation layer，thermal conductivity of insulation material is negatively correlated with the tunnel peripheral rock temperature gradient，thickness of insulation layer，and temperature of the original rock are positively correlated with the tunnel peripheral rock temperature gradient，and thickness and temperature of insulation layer have a significant influence on radius of heat-regulating circle. Temperature has a certain degree of influence on radius of heat-regulating circle，compared with the roadway without a heat-insulating layer，roadway heat-insulating effect of cooling effect is significant.

In order to explore the response mechanism of spontaneous combustion of underground coal and surface carbon flux under complex conditions，the surface CO₂ flux，soil temperature，fissure，environmental wind velocity and soil humidity in Fuxin Haizhou open-pit mine were monitored for a long time. Field tests，data analysis and other methods were applied to study the correlation between the underground coal spontaneous combustion and surface CO₂ flux. The influence of surface fissure，environmental wind velocity and soil humidity on the response mechanism of underground coal spontaneous combustion-surface carbon flux were analyzed. The results show that underground coal combustion is the fundamental factor triggering the abnormal surface carbon flux response. The surface CO₂ flux is positively correlated with the surface soil temperature distribution. Surface fissure is the main factor affecting the surface CO₂ flux distribution. The environmental wind speed is positively correlated with the surface CO₂ flux. The surface CO₂ flux response is generally not affected by soil humidity，but it is greatly affected by rainfall.

To improve coalbed methane extraction efficiency in deep mines，a high-flow sealing hole grouting material was developed using superfine cement as the base material to overcome issues of commonly used high polymer sealed materials such as high cost and flammable，low permeability of ordinary cement materials，and insufficient strength of paste materials such as fly ash. The hydration mechanism of the developed high-flow sealing grouting material was explored by an experimental study on the material's mechanical properties，combined with the measurements by scanning electron microscope(SEM)and X-ray diffraction(XRD). The results indicated that a large amount of calcium silicate hydrate (C-S-H) gel and ettringite (AFt) crystals were generated in the high-flow sealing grouting material during the initial phase of hydration. Furthermore，the gel particles of hydration products filled the pores of the material with the hydration reaction. Compared to commonly used cement sealing grouting material，the hydration reaction of the developed material was much faster and more complete，and the overall structure was more denser. Moreover，the compressive strength was increased by 3.68%. Therefore，the developed high-flow sealing hole grouting material can maintain the stability of gas extraction boreholes and improve gas extraction efficiency.