围岩与煤储层构造节理发育关系研究

Study on Development Relationship of Structural Joints betweenSurrounding Rock and Coal Reservoir

煤储层中构造节理裂隙是影响煤层气保存以及煤层气抽采的重要地质因素。利用围岩地表构造节理填图以及煤矿井下观察解剖的方法,分别对新疆阜康白杨河矿区围岩和煤储层中构造节理裂隙产状、密度、规模等发育特征及其分布规律进行研究,揭示同一构造层条件下的围岩与煤储层主干裂隙对应发育关系,为煤储层中裂缝预测提供依据。

Structural joints and fractures in coal reservoir are important geological factors that affect the preservation and extraction of coalbed methane.By using the methods of mapping the surface structural joints of surrounding rocks and observing and dissecting underground coal mines,the occurrence,density,scale and other development characteristics and distribution laws of structural joints and fissures in surrounding rocks and coal reservoirs in Baiyanghe Mining Area of Fukang in Xinjiang are studied.The corresponding development relationship between surrounding rocks and main fractures of coal reservoirs under the same structural layer conditions is revealed,which provides basis for fracture prediction in coal reservoirs.