九龙溪河流下煤炭开采覆岩破坏及地表沉陷规律研究

Research on Cover Rock Destruction and Surface Subsidence Law in Mining Coal Under the Nine Dragons River

通过对九龙溪河流下煤炭资源的埋藏情况、影响深部煤层开采的关键因素、实现九龙溪下煤炭资源安全开采的不利条件和有利条件以及覆岩结构分析,利用相似材料模拟试验和数值模拟分析法预计覆岩破坏高度,进行了防水安全煤岩柱的设计、回采上限标高的确定、以及技术可行性和安全可靠性分析。

This article analyzes the coal seam condition that lies hidden under the nine dragons river, the key element in mining deep coal seam, favourable and unfavourable conditions in mining under the nine dragons river, cover rock construction. Using resemble material simulate experiment and count simulate analysis estimateds the height of cover rock destruction. The last designs the safe coal post preventing water, determines the upper limit height of coal mining, anylyzes the technology feasibility and safety reliableility.