Study On Safety Assessing Of The Mine Gas Disaster With Division-area Model

Mine system is a complex and ever-changing giant system, in which the mine gas disaster is a major focus in mining science research projects. So, it owns a huge meaning for evaluating mine gas disaster. Through literature investigating and studying on analyzing the risk of probability of gas disaster from domestic document and abroad information, in this thesis the analysis of Gas Safety Division-area (GSDA) and the assess model on GSDA is taken into account.First of all, the gas concentration is the sign on gas accumulation, so the relative factors about gas gushing and the flowing region is analyzed all over the mine. It endows with the mine producing laneway system and the ventilation system. A region specialty is conducted out from such relationship. And moreover, the GSDA is put forward. As well as the site or equipment which is easier to meet the condition of gas disaster are defined as security concerns. And the things that connecting all the security divisions are defined as associated channel. Then the logic structure about GSDA is there out built up.In analysis of the factors affecting gas emission, it proposed the impact of objective environmental factors and control type of impact factors, and the relationship table is established else. By establishing the impact of the certainty indicators and non-deterministic indicators of GSDA, the Monte-Carlo simulating method is taken on to predict the gas emission of the factors and quantitative indicators of in formation processing, further more, a quantitative analysis on the risk of gas accumulation was build-up as an evaluation analysis model-information entropy model. A testing result shows that the model is worthy applying on the evaluation of the risk of gas accumulation in Cui-Jiagou coal mine.