影响崇信县南部煤炭资源开采的地质因素

Geological Factors Impacting Coal Resource Mining in Southern Chongxin County

甘肃省崇信县位于鄂尔多斯盆地西南缘,地下赋存着丰富的煤炭资源,预测资源量30多亿t,规划"十二五"末要达到1000万t以上的煤炭生产能力。研究区浅部煤炭资源已开采多年,新建矿井的煤炭资源大多都赋存在深部,通过对生产矿井、在建矿井地质资料的研究认为,随着埋藏深度增加,煤层赋存的地质条件越来越复杂,受成煤时期的古地理环境、后期构造改造、采矿等因素的影响,煤层厚度变化、煤层顶、底板的稳定性、断层、深部冲击地压、地下水等地质因素制约着深部煤炭资源的开采,并针对这些问题,对矿井建设、生产过程中的地质工作提出了一系列建议。

The Chongxin County,Gansu Province is situated at southwestern margin of the Ordos Basin,hosted abundant coal resources.Predicted coal resources have 3 billion more tons,planned coal production capacity will be over 10 million tons per year at the end of the＂12th Five-Year Plan＂.Shallow part coal resources are already mined for years,coal resources of newly built coalmines mostly hosted in deep part.Studies on geological data from production and under construction coalmines have considered that along with buried depth increasing,coal seam hosting geological condition more and more complex.Impacting from paleogeographical environment,succeeding structural alteration,the geological factors of coal seam thickness variation,coal roof and floor stability,fault,deep part pressure bump and groundwater have restricted coal resources exploitation.In allusion to these issues,a series of geological works during mine construction and production processes put forward.