综采条件下导水断裂带高度预测方法  

Height Prediction Methods of Water Flowing Fractured Zone Under Condition of Fully-mechanized Mining

作　　者：王国华[1] 尹尚先[2] 刘明 张祥维 

机构地区：[1]开滦(集团)有限责任公司,河北唐山063018 [2]华北科技学院,北京101601

出　　处：《煤矿安全》2017年第11期187-190,共4页Safety in Coal Mines

基　　金："十三五"国家科技重大专项资助项目(2017YFC0804108);教育部创新团队发展计划资助项目(IRT_17R37);河北省自然科学基金重点资助项目(D2017508099)

摘　　要：为改善综采条件下导水断裂带高度预测方法的适用性,提高预测精度,以综采条件下覆岩运移规律为基础,以关键层所处相对位置及是否破坏为判别标准,结合统计方法,提出了导水断裂带高度预测方法。若主关键层采动未破坏,该关键层与开采煤层的距离即为导水断裂带高度,若采动破坏,且向上不存在亚关键层,采用适当经验公式预测导水断裂带高度,若采动破坏,且向上存在亚关键层,对亚关键层进行类似上述主关键层的新一轮判断预测,依此类推完成预测。多个矿区应用说明,新方法适用性强精度高。In order to improve the applicability and forecast accuracy of prediction method for water flowing fractured zone height in the condition of fully mechanized coal mining, based on the migration laws of overburden, taking key stratum position and whether it is damaged or not as criterions, combined with statistical experiential formula, a new method was proposed. If the main key stratum in the fractured zone is unbroken after extraction, the height of water flowing fractured zone equals to the distance of the key stratum to coal seam; if the main key stratum destroyed and there is not any inferior key strata, the height of water flowing fractured zone predicted by statistical experiential formula; if the main key stratum is destroyed and there is inferior key stratum,next round of judgment for the sub key layer is similar to the main key layer to complete the forecast and so on. Applications in many cases show that the new method has high applicability and high accuracy.

关 键 词：综采工作面 经验公式 导水断裂带 关键层 判别标准 

分 类 号：TD745.21[矿业工程—矿井通风与安全]