榆树泉矿煤层开采覆岩破坏物理模拟试验研究  

Physical simulation test research on overlying rock failure during coal seam mining in Yushuquan Coal Mine

作　　者：张志立 孟凡林 王思翔 吴慧杰 王启庆[2] Zhang Zhili;Meng Fanlin;Wang Sixiang;Wu Huijie;Wang Qiqing(Xinjiang Investment Holding Co.,Ltd.,Henan Energy&Chemical Group,Changji 831100,China;China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]河南能源化工集团新疆投资控股有限公司,新疆昌吉831100 [2]中国矿业大学,江苏徐州221116

出　　处：《能源与环保》2024年第1期240-244,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金资助项目(42007240)。

摘　　要：为研究煤层开采覆岩破坏情况,以榆树泉矿为工程背景,采用物理相似模拟试验,分析了煤层开采过程中覆岩的破坏规律,结合经验公式计算,确定了煤层开采覆岩导水裂隙带高度。结果显示,随着煤层开采,覆岩裂隙在纵向上的发育速度减缓,横向裂隙发育速度加快,范围扩大,且近工作面处的裂隙逐步向破碎型裂隙发展。覆岩形态在横向、纵向以及整体上呈现出先扩展延伸而后趋于稳定的特点,覆岩形态最终趋于“马鞍形”。覆岩位移量随着距煤层工作面垂直距离的增加而减小,并且位移量由两侧向中部递减。模拟导水裂隙带的发育最大高度为65 m,与经验公式计算的结果吻合,裂采比约为16。研究结果可为榆树泉矿顶板水害防治提供科学依据。In order to study the overlying rock failure of coal seam mining,taking Yushuquan Coal Mine as the engineering background,the physical similarity simulation test was used to analyze the overlying rock failure law in the process of coal seam mining.Combined with the calculation of empirical formula,the height of the overlying rock water conducted zone was determined.The results show that with the mining of coal seam,the development speed of overlying rock fracture slows down in the longitudinal direction,and the development speed of the horizontal fracture is accelerated and the scope is expanded.Moreover,the fractures near the working face gradually develop to the fracture type.The overlying rock morphology presents the characteristics of first extending and then stabilizing in the horizontal,vertical,and overall directions,and finally tends to"saddle shape".The displacement of overlying rock decreases with the increase of vertical distance from coal seam working face,and the displacement decreases from both sides to the middle.The maximum height of the simulated water conducted zone is 65 m,which is consistent with the results calculated by the empirical formula,and the fracture production ratio is about 16.The results can provide scientific basis for the control of roof water damage in Yushuquan Coal Mine.

关 键 词：物理相似模拟 覆岩破坏规律 裂隙发育 导水裂隙带高度 

分 类 号：P631.3[天文地球—地质矿产勘探]