In order to effectively leverage the role of information technology in the safety management of power generation enterprises，the current situation of information management systems and power enterprise safety management was analyzed from the perspectives of group companies and grassroots enterprises. In response to key and difficult issues such as safety education，outsourcing management，and risk control，the construction of a safety credit management information system was proposed，which used technologies such as photography，recording，and positioning to automatically record the behavior of personnel at all levels in fulfilling safety responsibilities，providing decision-making basis for improving the safety management of power enterprises. The results indicate that the construction and use of a safety management information system can significantly reduce safety management costs，effectively conduct performance evaluations，identify weaknesses in safety management，and predict potential safety risks.

In order to improve the current situation of single disaster monitoring methods，weak early warning analysis capabilities，and untimely disaster disposal in mines，a single disaster classification and early warning model for gas，water，fire，roof，and dust was established based on the analysis method of formation mechanism. Through mathematical and statistical methods，the changing trends of data characteristic graphs of disaster monitoring data such as sudden changes，gradual increases，fluctuations，periodic changes，and constant changes were analyzed. Accordingly，a disaster fusion and early warning analysis plan was proposed. A disaster monitoring and early warning platform construction plan was designed. The on-site application of the platform in the Huangbaici Coal Mine of Wuhai Energy Company was analyzed from the perspectives of hardware and software deployment. The results show that the multi-disaster fusion and early warning analysis scheme based on the disaster formation mechanism and characteristic graph analysis technology can realize the disaster source tracing，correlation，and transmission analysis and improve the accuracy of early warning. The method of real-time dynamic planning of disaster avoidance routes based on tunnel parameter calculation and Dijkstra’s algorithm can improve the escape efficiency of personnel in mine disasters.

In order to effectively improve the quality and effect of safety production education and training，blockchain technology was utilized to design a safety production training platform and construct a new model for training supervision. By analyzing the current situation of the safety production training industry and the challenges it faces，the problems of production and operation units and training institutions，as well as the limitations of supervision means were discussed. The platform was divided into a data storage layer，a blockchain platform layer，a business logic layer，and a data display layer. The new model for supervision of safety production and training was analyzed. The results show that the use of blockchain technology in safety production training to build a new comprehensive supervision model can prevent data tampering and fraud，achieve trustworthy data storage and secure sharing，and effectively improve the efficiency and convenience of safety training and supervision work.

In order to increase transportation efficiency，improve the safety of workers，and enhance cleaning efficiency，the discrete element modeling-multi-body dynamic simulation (EDEM-RecurDyn) method was proposed to analyze the cleaning ability of the cleaning mechanism. Firstly，EDEM-RecurDyn was used to analyze the stress changes of the hob，and the three factors that affected the stress of the hob were obtained: the rotating speed of the drum，the dragging speed，and the depth of cleaning. The reference range was determined. Then，the response surface was used to carry out the three-factor three-level test，and the cleaning energy consumption ratio was obtained by analyzing rolling. The quadratic fitting polynomial was carried out. Finally，based on Matlab，a particle swarm optimization algorithm was used to solve the parameters. The results show that when the drum speed of the cleaning mechanism is 78 r/min，the traction speed is 0.05 m/s; when the cleaning depth is 100 mm，the cleaning mechanism is subjected to the least resistance and the lowest energy consumption.

In order to investigate the spatio-temporal evolution of mining-induced fissures and change characteristics of pressure relief gas-enriched area in the overlying rock of the slowly inclined coal bed，physical similarity simulation and field monitoring method were used to analyze the evolution and distribution characteristics of the fissure in the overlying rock. The evolution characteristics of the pressure relief gas-enriched area were studied to determine the parameter arrangement scheme of the high directional drilling holes，and the effect test was carried out. The results show that the test working face has a height of 13 m along the caving zone of the coal bed，and the height of the fissure zone is 68.5 m. The fissure network along the working face is affected by the inclination angle of the coal bed，and the fracture angle of the working face is 54°-59°. The openness of the fissure development is gradually increasing upward from the working face，and the gas transportation channel is asymmetric. The whole life cycle of the gas extraction process by high directional drilling can be divided into the early stage of extraction，the middle stage of extraction，and the end stage of extraction according to the extraction volume fraction. In the early stage of extraction，the volume fraction is low. The middle stage of extraction has high efficiency in the whole life cycle of extraction. In the late stage of extraction，the volume fraction shows a sharp decline. After the implementation of the high directional and long drilling technology，the volume fractions of the gas in the upper corners of the working face and in the return-air tunnel are all less than 0.8%，indicating a good effect of the gas extraction，and the arrangement of the high drilling holes is reasonable.

In order to realize mining in high gas mines in low gas states，a set of comprehensive gas treatment technology based on over-pre-pumping of coal seam gas，pumping while mining，and pumping and mining in the goaf area was proposed. The comprehensive gas treatment technology and measures for 81305 comprehensively drained working face in Baode Coal Mine were introduced，and the comprehensive gas treatment measures were recorded in detail，such as pre-pumping before mining of the present coal seam，switching between downdraft and updraft，pumping and drainage by buried pipeline in goaf area，pressure equalizing，air guide curtain and negative pressure spray setting，rationally distributed air flow，and closing at the end of mining. The results show that the volume of the gas pumping and drainage in the 81305 working face has reached a total of 18.549 1 million m³，and the comprehensive pumping and drainage rate has reached 81.07%，indicating excellent application effects. The comprehensive gas treatment technology combining various pumping and drainage methods can make the gas concentration in the comprehensively drained working face in Baode Mine safe and controllable during mining.

In order to ensure the safe mining of isolated island working face with impact ground pressure，the isolated island working face mining under the condition of a thick and hard rock layer in a mine was taken as the background. Based on the key layer theory of rock layer control and the viewpoint of the spatial structure of overlying strata，the basic characteristics of the spatial structure of overlying strata formed in the isolated island working face were studied through case study，theoretical analysis，and on-site monitoring，as well as the monitoring and identification method and its anti-impact mining design. The formation process and distribution characteristics of the spatial structure of Γ-type overlying strata were identified，and a mechanical model of reasonable width of the isolated island working face under the spatial structure of Γ-type overlying strata and with the abutment pressure as the main assessment index was established and applied for verification. The results show that the isolated island working face under the condition of one side being fully mined and the other side not being fully mined can form a spatial structure of Γ-type overlying strata with the overlying thick key layer，and the implementation scheme proposed in the paper meets the requirements of the field engineering and can ensure normal mining.

In order to further improve the safety risk control capability of chemical research and experimental equipment，the causes of chemical research and experiment safety accidents in recent years were analyzed. Based on the current management practice of chemical research and experimental equipment，the safety risk control throughout the full life cycle from various aspects was implemented，such as feasibility study，design，construction，trial operation，and scrapping. The focus was on exploring the three main aspects of early safety review，equipment design，construction management，and operation safety management. By comparing the risk control of relatively mature hazardous chemical construction projects，the weak links and prominent problems in the chemical research and experimental equipment were analyzed. The results indicate that the safety risk control of chemical research and experiments is a systematic project that should fully draw on the experience of safety risk control in hazardous chemical construction projects. Scientific research and experimental equipment should be classified and reviewed for safety access control. Through source safety review，specification management design，construction quality control，confirmation of safety conditions during operation，equipment and facility management，hazardous chemical management，and other full process risk control measures，safety risks can be minimized to the greatest extent，providing references and choices for risk management of scientific research and experimental equipment.

To study the key points of process safety management in chemical infrastructure projects and carry out targeted safety management，the safety inspection of a gasification unit during construction in a chemical project of an energy group was studied. The entire process safety records of the project were collected，classified，organized，statistically analyzed，compared，and inspected. The key and difficult points of project safety management were summarized by comparing the types and quantities of safety hazards in each unit，the number of hazards per contract valuing million yuan，the distribution of various types of safety hazards，the distribution of safety hazards in each unit，and the comparison of safety hazards in similar units. The research shows that safety protection is the type of safety hazards that generate the most hazards during project construction，and reducing the number of such safety protection hazards can effectively improve the level of project safety management. The safety management level of each construction unit varies，and each construction unit has its own management characteristics. The list of qualified contractors should be further improved through contractor evaluation. It is also necessary to establish a qualified contractor database and record the advantages and disadvantages of contractor safety management，so as to facilitate targeted safety management in future projects.

In order to prevent safety accidents caused by fatigue failure of mining drilling rigs due to overload，a safety condition monitoring technology of drilling rigs based on digital twins was studied. First，the overall framework of the digital twins-based monitoring system for safe operation conditions of drilling rigs was proposed，and then a real-time analysis method of drilling rig stress conditions based on a proxy model was studied. The finite element method was used to obtain stress distribution and amplitude data sets of the rig overturning frame，which were used for training and testing the proxy model. The results show that the maximum difference between the large-scale stress value calculated by the finite element method and the predicted value by the proxy model does not exceed 5×10^-6 MPa. The absolute variance of the difference between the predicted values and the calculated values at all nodes is about 2×10^-6 MPa. This shows that the proposed proxy model can be used instead of the finite element method to analyze the real-time stress of the rig overturning frame.