羊场湾煤矿130201工作面地表沉陷规律研究  

Study on Law of Surface Subsidence of 130201 Working Face in Yangchangwan Coal Mine

作　　者：李洋 LI Yang(Yangchangwan Coal Mine,CHN ENERGY Ningxia Coal Industry Co.,Ltd.,Yinchuan 750410,China)

机构地区：[1]国家能源集团宁夏煤业公司羊场湾煤矿,银川750410

出　　处：《煤炭技术》2022年第12期97-100,共4页Coal Technology

摘　　要：为研究揭示西部深埋厚倾斜煤层开采地表移动变形规律,以羊场湾煤矿130201工作面为研究对象,通过地表移动观测获取了地表移动变形参数,采用综合分析的方法揭示了地表移动变形规律。结果表明:130201工作面回采后走向方向地表达到充分采动,地表最大下沉值3 033.67 mm,最大下沉系数为0.73;地表水平移动变形集中于工作面边界偏采空区位置,煤层倾斜导致上山边界最大地表水平移动量大于下山边界;地表移动分为“启动”、“活跃”以及“衰减”3个阶段,活跃阶段持续时长162 d,完成了总下沉量的95.8%,地表最大下沉速度滞后角和超前影响角分别为73°和46.5°,研究成果可为羊场湾煤矿开采保安煤柱留设、地表移动预计和安全绿色开采提供参考。In order to reveal the law of surface movement and deformation in deep-buried and thick inclined coal seam mining in western, the 130201 working face in Yangchangwan coal mine was taken as the research object and the parameters of surface movement and deformation are obtained through surface movement observation. The law of surface movement and deformation is revealed by the method of comprehensive analysis. The results showed that: after mining, the strike direction of 130201 working face reaches full mining, the maximum surface subsidence value is 3 033.67 mm, and the maximum subsidence coefficient is 0.73. The surface horizontal movement and deformation are concentrated in the partial goaf position of the working face boundary, and the coal seam inclination causes the maximum surface horizontal movement of the uphill boundary to be larger than that of the downhill boundary. The surface movement is divided into three stages: "start", "active" and "attenuation". The active stage lasts for 162 days, and 95.8% of the total subsidence is completed in the stage. The lag angle and leading influence angle of the maximum surface subsidence velocity are 73° and 46.5°respectively. The research results can provide reference for the setting of security coal pillar, surface movement prediction and safe green mining in Yangchangwan coal mine.

关 键 词：煤层开采 开采沉陷 发育规律 

分 类 号：TD327[矿业工程—矿井建设]