| In Pingdingshanâ„–13 mine, geological conditions are complex, there were three coal and gas outbursts during the mining and tunneling. With mining deeper, more accidents such as coal and gas outburst have turned into the most important factor in constraining coal mine production safety.This paper used area geological evolution and tectonic gradual control theory of gas storage, researched the geological tectonic features and tectonic complexity. On the basis of the analysis effects of tectonic stress field in tectonic, with underground observation and identify tectonic coal by logging, this paper drawn thickness distribution of tectonic coal inâ„–13 mine. By underground measuring, laboratory analysis and measurement, data aggregation, etc. And combined analysis of the effects the geological tectonic factors to gas storage, this paper divided geological units. And then,analyzed gas deposit law and did simulation and analysis of tectonic main control unitII by using SPSS software. At last, combined the previous examples and anlysis above, selected gas pressure as outburst prediction index and then carried out dangerous regional forecast and divided, and drew coal and gas outburst danger zones map. So this research just provided referancese for deeper mining plans, methane drainage and utilization, ventilation and coal and gas outburst prediction. |
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