杨恒, 刘东, 贾明魁,等.厚煤层开采覆岩离层注浆地表沉陷规律研究[J].河南理工大学学报（自然科学版）,2026,45(3):93-103.

YANG H, LIU D, JIA M K,et al.Study on surface subsidence characteristics induced by overburden separation grouting in thick coal seam mining[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(3):93-103.

厚煤层开采覆岩离层注浆地表沉陷规律研究

杨恒1, 刘东1,2, 贾明魁1, 郭瑜1,2, 葛志博3, 郭文兵3, 李书文4, 闫浩5

1.河南能源集团有限公司，河南 郑州  450000；2.河南能源集团研究总院有限公司，河南 郑州  450000；3.河南理工大学 能源科学与工程学院，河南 焦作  454003；4.河南能源义马煤业集团， 河南 义马  472300；5.中国矿业大学 矿业工程学院，江苏 徐州  221116

摘要: 目的 为了探索厚煤层开采覆岩离层注浆地表沉陷规律，开展不同工作面布置情况下覆岩离层注浆的地表移动变形规律研究。  方法 以义煤集团某矿11090、11080工作面为工程背景，采用理论分析、现场监测等方法展开研究；基于现场工况，运用理论分析方法，确定该地层条件下关键层位置及潜在的注浆层位；建立地表移动观测站监测2种情况下覆岩离层注浆地表移动变形，分析获得的数据。  结果 结果表明：（1）11090工作面和同采区未注浆11010工作面移动角对比，注浆下的移动角比非注浆下的大，说明注浆有效控制了地表采动影响范围；（2）孤岛工作面受邻近采空区影响，在注浆时应提高注采比、增加注浆量，以达到保护地表建（构）筑物、控制地表沉降的目的；（3）注浆、非注浆下工作面尺寸均是影响地表沉降大小的重要因素；（4）分析注浆与非注浆下边界角变化特征，结合空间几何学研究2种情况下地表采动影响范围，推导地表采动影响减损面积计算公式，为注浆减沉评价提供量化参考。  结论 针对不同工作面布置情况下覆岩离层注浆地表移动变形规律的研究，对后续采用覆岩离层注浆工作面安全、高效开采、合理优化工作面布置参数具有重要指导意义。

关键词:覆岩离层注浆;开采沉陷;厚煤层;孤岛工作面;边界角

doi:10.16186/j.cnki.1673-9787.2025100030

基金项目:国家自然科学基金资助项目（52574141）；河南省国际科技重点合作项目（251111521200）

收稿日期:2025/10/23

修回日期:2026/01/24

出版日期:2026/04/28

Study on surface subsidence characteristics induced by overburden separation grouting in thick coal seam mining

Yang Heng1, Liu Dong1,2, Jia Mingkui1, Guo Yu1,2, Ge Zhibo3, Guo Wenbing3, Li Shuwen4, Yan Hao5

1.Henan Energy Group Co.， Ltd.， Zhengzhou  450000， Henan， China；2.Henan Energy Group Research Institute Co.， Ltd.， Zhengzhou  450000， Henan， China；3.School of Energy Science and Engineering， Henan Polytechnic University，  Jiaozuo  454003， Henan， China；4.Henan Energy Yima Coal Industry Group Co.， Ltd.， Yima  472300， Henan， China；5.School of mines，China University of Mining and Technology， Xuzhou  221118， Jiangsu， China

Abstract: Objectives This study aims to investigate the surface subsidence characteristics of overburden separation grouting under different working face layouts.  Methods The 11090 and 11080 working faces of a mine in Yimei Group were taken as the engineering background， and a combination of theoretical analysis and field monitoring was employed. Based on site conditions， the key strata and potential grouting horizons were identified. Surface movement observation stations were established to monitor subsidence under both grouted and non-grouted conditions， and the monitoring data were analyzed.  Results The results show that： （1） Compared with the non-grouted 11010 working face in the same mining area， the movement angle of the 11090 working face under grouting conditions was larger， indicating that grouting effectively reduced the extent of mining-induced subsidence； （2） The isolated working face was affected by adjacent goaf areas. and increasing the grouting-to-mining ratio and grouting volume can effectively protect surface structures and control subsidence； （3） The working face size was an important factor affecting surface subsidence under both grouted and non-grouted conditions； （4） By analyzing the variation characteristics of boundary angles and applying spatial geometry， a calculation formula for the reduction of mining influence area was derived， providing a quantitative basis for evaluating subsidence control by grouting.  Conclusions The findings provide important guidance for the safe and efficient application of overburden separation grouting， as well as for optimizing working face layout parameters.

Key words:overburden separation grouting;mining subsidence;thick coal seam;isolated working face;boundary angle