平顶山十矿上行开采导水裂隙带高度确定

Comprehensive determination of the height of water flowing fractured zone in super close upward mining

为确定平顶山十矿近距离上行开采条件下覆岩垮落带及导水裂隙带高度.运用相似模拟、数值计算、理论分析以及现场钻孔窥视等诸多方法进行综合对比分析.结果表明:综合确定的导水裂隙带发育高度为28.8~32.7 m,与实测值误差为4.14%~8.28%,理论计算应选取大采深无渗流场计算公式;相似模拟—数值计算—大采深无渗流场公式计算的综合方法针对平顶山矿区预计导水裂隙带高度的准确性较好.建议在下一步深部开采中使用该方法估算导水裂隙带高度,研究结果对具有类似条件的矿井导水裂隙带预测具有一定借鉴意义.

In order to determine the height of overburden caving zone and water flowing fractured zone of Pingdingshan No. 10 coal mine, this paper used the methods including similar simulation, numerical calculation, theoretical analysis and field verification to comparative analysis for close distance coal seams in deep mining. The results show that the height of water flowing fractured zone is 28.8-32.7m, and the error is 4.14%-8.28%; the theoretical analysis should select the formula of no seepage field in deep mining; the similar simulation-numerical calculation-no seepage field formula comprehensive method has well accuracy in water flowing fractured prediction. This study recommends predicting the height of water flowing fractured by using this method in deep mining, and research result also has reference significance to coal mine with similar conditions.