Research Of Rescue Capsule Surface Impact Load Distribution Numerical Simulation Under Gas Explosion

Coal energy is the main source of energy in our country, but coal mining industry has always been one of China’s high-risk industries, that lots of coal mine accidents had been taking place every year. With the continuous development of the times, people have been paying more and more attention to the safety issue of production of coal mine, and how to reduce or prevent the occurrence of coal mine accidents become an increasingly important research topic. This also contributed to the relevant national responsibilities departments to develop a coal mine production safety system and equipments to reduce the occurrence of coal mine accidents, one of the typical examples is the invention of mobile mine rescue capsule.Gas explosion is one of the most major incidents in coal mine accidents, so whether rescue capsule can guarantee not to be destroyed when gas explosion occurs is a serious issue. In order to analyze the rescue capsule strength, need to know the distribution of the rescue capsule surface impact load.But for rescue capsule surface impact load distribution are still less, so the research on rescue capsule surface impact load is very necessary. In order to provide detailed data to support designers optimization rescue capsule design, the article will rescue capsule explosive field in the surface distribution of impact load research. In this paper, the following aspects are included:1A brief introduction of the purpose of conducting this research, the meaning of the status quo from domestic and abroad and deficiencies, and the main content of this paper.2To analysis the basic theory of the gas explosion, including the mechanism of gas explosion, the blast wave propagation and TNT equivalent replace9.5%of the air-methane gas mixture explosion blast wave overpressure calculation and explosion over pressure wave reflection calculations.3Through AUTODYN pair of rectangular cross-section, circular cross-section, vaulted cross-sectional rescue capsule of in the tunnel horizontal direction center position and the horizontal direction to one side of the two conditions do finite element analysis, the different cross-section is obtained in both cases lifesaving compartment surface distribution of the impact load. 4The weakening of the role of retaining wall on the surface of the rescue capsule impact load get the rectangular the retaining wall distance rescue capsule wave front different position AUTODYN numerical simulation analysis surface impact of rescue capsule in load distribution and retaining wall for the the wedge when rescue capsule surface impact load distribution.Eventually conclude the research result of this task, summarize useful conclusions, and point out analysis of proposed technical issues need further in-depth study to explore and broaden.