富煤一矿水体下采煤可行性分析

Discussion on Mining Feasibility under Water Body of Fumei Mine

根据我国现阶段水体下采煤理论及开采经验,系统地分析和研究了富煤一矿水体下采煤的技术及条件,通过对煤层覆岩条件及其防水特征研究后,认为本矿井的煤层覆岩条件和留设的防水安全煤岩柱特征均有利于水体下开采全部煤层,但地表破坏和覆岩破坏的沟通强度、采深采厚比值的研究结果显示,开采M_(15)号煤层以上的煤层是安全的,开采M_(15)号以下的煤层则需要在开采上部煤层时进行监控监测,以便采取适合本矿井的综合措施后确定能否开采。

According to China＇ s mining theory and experience of mining under water body at present stage, this paper gives a systematical analysis of coal mining technical conditions under water body of Fumei mine. Study results suggest that coal seam overlying strata conditions and the features of remaining waterproof safe coal rock pillar are con- ductive to all the coal mining under water body. However, the study of the surface damage and destruction of overly- ing strata of conduction intensity and its thickness ratio indicate that exploitation of coal seam over No. MI5 is safe. But when the seams below the coal seam No. M15 are mined , the upper coal seam mining need to be monitored in order to take appropriate measures in this comprehensive study to determine that is it suitable or not for mining.