平煤股份十三矿瓦斯突出主控地质因素分析

Analysis on Main Controlling Geological Factors of Gas Outburst in Pingdingshan No.13 Mine

平煤股份十三矿瓦斯含量分布变化大,构造较复杂,前人对其瓦斯突出和影响因素等做过很多研究。通过对平煤股份十三矿瓦斯突出地质因素的系统研究,得出以下结论:褶皱和逆断层构造叠合发育区域是瓦斯突出的高发区,褶皱和逆断层是控制该区瓦斯的主要地质因素,煤层厚度、煤变质程度、垂深和煤层底板标高负值、顶底板岩性、构造煤、岩浆岩侵入等是次要因素,开拓施工是其诱导因素;背斜区域瓦斯含量低、突出概率小的观念并非适合所有井田。此外,还根据单项瓦斯突出指标,初步提出在己四采区有逆断层发育的地段,可能是有瓦斯突出的危险地段。

Pingdingshan No. 13 Mine is a coal mine that the gas content distribution changes a lot, and the structure is complex, the pre- vious studies on the gas outburst and influence factors have been done. This paper systematically studied geological factors of Pingdings- han No. 13 Mine gas outburst,it put forward these view points： the folds and thrust faults superposed development area is the gas out- burst in high incidence area;the fold and thrust fault are the main geologic factors controlling the gas;coal seam thickness, degree of coal metamorphism,vertical depth and coal seam floor negative elevation;these concept is not suitable for all the coalfield,such as： the lithology of the roof and floor, tectonic coal, magmatite intrusion are the secondary factors, develop construction is the inducing factor; the gas content is low in the anticline area, and the outburst probability is small. In addition, according to the single gas outburst index,ini- tially proposed that it may be of gas outburst danger in theV[ mining area which have reverse faults.