大平煤矿特大型煤与瓦斯突出瓦斯地质分析.PDF

第 30卷第 2期 煤 炭 学 报 Vo.l 30 No. 2 2005年 4月 JOURNAL OF CH INA COAL SOCIETY Apr. 2005 : 0253- 9993( 2005) 02- 0 37- 04 , 2 , 2 张子敏 , 张玉贵 ( 1 河南理工大学瓦斯地质研究所, 河南 焦作 454003; 21 中国煤炭学会 瓦斯地质专业委员会, 河南 焦作 454003) : , , 、, / 0# 200 , , 、. 450m , ; , 、 , . / 0# 200 , 、 , . : ; ; ; : TD7 2153 : A Investigation into coal2gas outbur st occurred in Dap ing Coaml ine, by using theor ies of gas2geology , 2 , 2 ZHANG Zi2m in , ZHANG Yu2gu i ( 1In st itu te of Ga s2geology, H enan P olytechn ic Univer si ty, J iaozu o 454003, China; 21 Ga s2geology D ivision, Ch ina C oal Society, J iaozu o 454003, Ch ina ) Abstr act: Based on gas- geology and theories of regional tecton ic evolution, the laws ofgas geology were studied. And geological reason of the / 0# 200 m in ing calam ity was surveyed, which is a oversize coal2gas ou tburst occur2 ring in Dapingm ining. The results show that EarlyTriassic epoch, in tense tecton ic extrusion appeared, the late Ju2 rassic to the early Cretaceous epoch and the lateCretaceous to theTertiary epoch tecton ic pu llapart and gravity slide occurred in Xinm im inings, gas grade is low in superficial part above 450 m underground, gas2geological condition is complex in the deep, coal2gas2outburst proneness is of zon ing and banding and controlled by geological structure in Dapingm in ing. / 0# 200 m in ing calam ity is a acciden t of coal and gas outburst occurr ing at complex tectonic place, where tecton ic stress is