Department of Coal Mining & Designing, Tiandi Science & Technology Co.,Ltd.

为确定急倾斜特厚煤层水平分层综放开采覆岩破坏高度,以梅河煤矿为试验对象,基于钻孔冲洗液漏失量观测法实测的覆岩破坏高度,与UDEC软件得出的多分层开采后的覆岩裂隙演化特征和发育高度模拟结果,回归得出了水平分层综放开采导水断裂带高度预计公式。结果表明:急倾斜特厚煤层水平分层综放开采覆岩破坏高度随着分层数的增加,最大高度受到明显抑制,裂高与累计采厚比明显减小;覆岩破坏最终发育形态呈明显的拱形,且偏于顶板一侧;覆岩垮落角将随着开采分层的增加而增大。基于以上分析,得出了梅河矿区急倾斜厚煤层水平分层综放开采覆岩破坏高度的预计方法。

iin order to detemine the height of overburden falure of the steep thick seam horizontal siting full - mechanized caving mining taking Meie Mine as the experimental mine,the paper adopted borehole fushing fuid oss oservation metod to measure the overburden falre height in combination with the overburdenfaure evoluton characteristics and development height simulaton resulis with UDEC sofiware,the expeced fomuia of waterconducted zone heght of horzontalscin aul mechanized caving mining was obtained.The results showed tat the overburde fralre height inreased with the layers the maximum height of overburden was sg nificantiy inhibried,the carck height and the cumulative ratio of mining depth and minin thickness was significantly decreased;,the terminal development form of over)urden was obvious ach type and located on theroo s d e; overburden caving angle increased with the increase of mining ticing numiber.Based on the above analysis esults,the overburden failure height of steep thick seam horizontal slicing fully- mechanized caving mining in Meine Mine was obtained.

“十二五”国家科技支撑计划资助项目(2012BAB13B02-04)；