新疆西沟煤矿缓斜厚煤层开采覆岩“三带”发育高度研究

Study on the Development Height of the"Three Zones"of Overlying Strata during the Mining of Gently Inclined Thick Coal Seams in Xigou Coal Mine,Xinjiang

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摘要西沟煤矿厚煤层的高强度开采导致采场覆岩运移及矿压显现加剧,面临矿压难控制、地面塌陷、水害风险大等问题,制约矿井的安全高效开采。为掌握厚煤层开采覆岩的活动特征,以西沟煤矿生产地质条件为基础,通过理论计算、数值模拟和钻孔电视实测的方法,确定了缓斜厚煤层开采上覆岩层“三带”的发育高度,结果表明:西沟煤矿B1煤层平均厚度为7.0 m,开采后垮落带发育高度32.81~34.40 m,裂隙带发育高度为65.96~69.16 m,弯曲下沉带发育高度为0~224.43 m。研究结果可为矿山压力控制、隐蔽致灾因素普查分析及灾害治理提供依据。 The high-intensity mining of thick coal seams in Xigou coal mine has led to intensified overlying strata movement and mining pressure manifestation in the mining area,facing problems such as difficult control of mining pressure,ground collapse,and high risk of water damage,which restrict the safe and efficient mining of the mine.In order to understand the activity characteristics of overlying strata in thick coal seam mining,based on the production geological conditions of Xigou coal mine,the development height of the"three zones"of the overlying strata in the gently inclined thick coal seam mining was determined through theoretical calculations,numerical simulations,and drilling TV measurements.The results showed that the average thickness of the B1 coal seam in Xigou coal mine was 7.0 m,and the development height of the collapse zone after mining was 32.81~34.40 m,the development height of the fracture zone was 65.96~69.16 m,and the development height of the curved subsidence zone was 0~224.43 m.The research results can provide a basis for mine pressure control,general survey analysis of hidden disaster-causing factors,and disaster management.

作者李剑王宏志吴辉 LI Jian;WANG Hongzhi;WU Hui(No.9 Geological Team,Xinjiang Bureau of Geology and Mineral Resources and Development,Urumqi,Xinjiang 830099;College of Geology and Mining Engineering,Xinjiang University,Urumqi,Xinjiang 830046)

机构地区新疆维吾尔自治区地质矿产勘查开发局第九地质大队新疆大学地质与矿业工程学院

出处《中国煤炭地质》 2025年第4期37-43,共7页 Coal Geology of China

基金新疆维吾尔自治区自然科学基金项目“大南湖富水软岩巷道围岩损伤演化及强度劣化机制”(2024D01C15)。

关键词矿井水防治覆岩活动垮落带裂隙发育数值计算钻孔窥视新疆西沟煤矿 mine water prevention and control overlying strata activity collapse zone fracture development numerical calculation drilling observation Xigou coal mine in Xinjiang

分类号 TD745 [矿业工程—矿井通风与安全]

作者简介第一作者:李剑(1984-),男,高级工程师,研究方向:水文地质、工程地质及环境地质。E-mail:115164966@qq.com;通讯作者:王宏志(1990-),男,博士,副教授,研究方向:矿山岩体力学与岩层控制。E-mail:wanghongzhi@xju.edu.cn。