摘要
基于沈家湾煤矿2666工作面开采技术条件和岩石物理力学参数,构建了导水裂隙带高度计算模型,运用岩石破断过程(RFPA2D)分析软件,对上覆岩层的变形、冒落情况进行了数值模拟,采用"三下"开采规程中计算公式对覆岩导水裂隙带高度进行了验算,应用井下仰孔注水测漏法实测了覆岩导水裂隙带高度.结果表明:数值模拟与理论计算及现场观测得到的导水裂隙带高度基本上一致.该研究为确定沈家湾煤矿上覆岩层导水裂隙带高度以及类似矿井水体下开采提供了设计依据.
Based on the exploitation technical conditions, and the physical and mechanical parameters of rocks of 2666 caving face of Shenjiawan coal mine, the height of water flowing fractured zone calculation model is constructed. By using the rock failure process analysis software （RFPA^2D）, the deformation and falling of the overburden strata are simulated. And the height of water flowing fractured zone in overburden strata is checked by the theoretical formula in three--underground mining regulations and is measured with the upward slant hole observing method. The results show that the numerical simulation result, the theoretical calculation result and the site observation result are basically the same. This research can determine the height of water flowing fractured zone in overburden strata of Shenjiawan coal mine and also can provide the design basis for the similar coal mines.
出处
《矿业工程研究》
2009年第3期31-33,共3页
Mineral Engineering Research
关键词
RFPA
导水裂隙带
数值模拟
井下仰孔测漏法
RFPA
water-flowing fractured zone
numerical simulation
the upward slant hole observing method
