彬长矿区富水层下煤层开采评价

The safety evaluation of coal mining under water-rich layer in Binchang mining area

通过对彬长矿区已生产矿井水文情况进行及时跟进现场观测分析,结合已有的地质勘探和可研报告等研究成果,针对主采4#煤层采煤工作面掘进和回采过程中顶板淋、涌水严重影响生产和安全的问题,采取了科学合理的防治水措施,实现了4#煤层富含水层下安全采煤的目标。结果认为矿井生产建设初期进入巷道和工作面的地下水主要为侏罗系直罗组和延安组地层含水,随着矿井的进一步开拓,导水裂隙带会波及到白垩系洛河组砂砾岩含水层,可能会造成大量涌水,同时二采区中部存在两个"透水天窗",也是矿井防治水的一个关键点,需要提前防范。蒋家河、大佛寺、下沟矿井等富水层下安全开采的经验丰富了彬长矿区矿井防治水方面的成果和理论,具有一定的借鉴和推广意义。

By analyzing the mine hydrogeology conditions in Binchang mining area,combined with existing geological exploration and production data,aiming at the roof water problems of №4 coal seam mining and tunneling face,the scientific and reasonable water prevention and control measures was taken,and then the safety mining under water-rich layer was achieved. The experiences of safety mining under water-rich layer in Jiang Jiahe Mine,Dafosi Mine and Xiagou Mine have a certain reference and spreading significance.