## 5 Conclusions  
Considering impact ground pressure hazard in the coal mine as the research object, and using the accident tree, analytic hierarchy process, and the fuzzy comprehensive evaluation model of the microseismic events, we put forward a more effective prevention measure through double risk evaluation and analysis of the impact ground pressure hazard of the mine. The following conclusions were drawn from this study.  
(1) This study can effectively evaluate the impact of coal mining in coal mine by establishing a \"double high\" risk index system. The index system is controlled by eight basic layers of the three intermediate layers, forming an accident tree on the top of a double height event. In this study, the paper expounds and establishes the principle of establishing the \"double high\" risk index system, which makes the evaluation result more accurate and comprehensive. The index system contains several evaluation indicators that can be divided into different levels to assess the impact risks of different levels. This new index system provides a more reliable basis for the assessment of the damage of the coal mine and provides effective support for the formulation of relevant decision-making and prevention measures.  
(2) The evaluation index of a \"double high\" risk of microseismic events in Yanbei Coal Mine was analyzed, and the evaluation indexes were classified. Among them, the four indexes of mining depth, surrounding rock structure, mining stress concentration, and impact risk belonged to level II, with a medium impact risk. The three indexes of the geological structure, coal rock impact risk, and inductive factors belonged to level III, with a strong impact risk. The input factor of prevention and control belonged to level I, without an impact risk (or with a weak impact risk).  
(3) The weight of the criterion layer and index layer of the \"double high\" risk evaluation index system of microseismic events was calculated by the analytic hierarchy process. The fuzzy hierarchical comprehensive evaluation model was employed to evaluate the \"double high\" risk of microseismic events in the 250204 working face of Yanbei Coal Mine, and the evaluation model was modified based on the qualitative analysis results of the accident tree.  
Conceptualization, X.L.; methodology, X.L. and D.C.; software, J.F.; validation, D.C., S.L. and J.F.; formal analysis, X.L.; investigation, X.G.; resources, X.G.; data curation, X.L.; writing--original draft preparation, X.L.; writing--review and editing, S.L.; visualization, D.C.; supervision, D.C.; project administration, D.C.; funding acquisition, X.L. All authors have read and agreed to the published version of the manuscript.  
This research was funded by [National Natural Science Foundation of China] grant number [52104204, 52204226], [Taishan Scholars Project] grant number [tsqnz20221140] and [Natural Science Foundation of Shandong Province] grant number [ZR2021 QE170, ZR2022 QE243]. The APC was funded by [National Natural Science Foundation of China].  
Not applicable.  
Data Availability Statement: Data available on request due to privacy.  
This study is supported by the National Natural Science Foundation of China. I am grateful to Li Lou Coal Industry for granting me permission to quote copyrighted material. Additionally, I would like to express my sincere appreciation to the anonymous reviewers whose invaluable feedback has substantially contributed to the improvement and publication of this paper.  
Author [PERSON] and [PERSON] were employed by the company Shandong Energy Group Luxi Mining Industry Co., Ltd., Li Lou Coal Industry. Author [PERSON] was employed by the company Zhengzhou Coal Industry (Group) Corporation Limited Liability Company. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.