刘少伟, 米超, 贺德印,等.三软厚煤层工作面回采巷道超前“卸-支”协同围岩控制技术及应用[J].河南理工大学学报（自然科学版）,2026,45(2):76-85.

LIU S W, MI C, HE D Y,et al.Surrounding rock control technology and its application based on synergistic roof cutting and support in advanced mining roadways of thick coal seams under three-soft conditions[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(2):76-85.

三软厚煤层工作面回采巷道超前“卸-支”协同围岩控制技术及应用

刘少伟1,2, 米超1, 贺德印1, 李小鹏1

1.河南理工大学 能源科学与工程学院，河南 焦作  454003；2.煤炭安全生产与清洁高效利用省部共建协同创新中心，河南 焦作  454003

摘要: 目的 为了解决三软厚煤层工作面开采过程中回采巷道超前支护区域围岩应力集中、超前支护工序繁琐且效果差、工作面推进缓慢等问题，开展三软厚煤层工作面回采巷道超前“卸-支”协同围岩控制技术及应用研究。  方法 以赵家寨煤矿12203工作面胶带运输巷为研究背景，利用数值模拟结合现场工业性试验，分析工作面回采巷道超前支护区域围岩应力集中程度影响因素，研究最佳切顶方案和超前锚索补强支护方案。 结果 结果表明，工作面超前和侧向支承压力与回采巷道开挖形成的侧向支承压力叠加，对回采巷道超前支护区域围岩应力集中程度影响显著。数值模拟证明了切顶能够从回采巷道围岩应力转移、改变采场荷载分布情况、卸压3个方面有效改善回采巷道超前支护区域围岩应力集中。最终确定切顶角10°、切顶深度18 m为最佳方案，同时明确了最佳超前锚索补强支护方案。在赵家寨煤矿12203工作面胶带运输巷开展“卸-支”协同技术现场应用试验，回采巷道超前支护区域浅部围岩应力集中程度得到有效缓解，取消了工作面回采巷道超前被动支护，保证了巷道安全生产。 结论 回采巷道超前“卸-支”协同围岩控制技术能够有效卸压、补强支护，保障回采巷道安全稳定的同时，又保证工作面安全快速回采，可为同类三软厚煤层回采巷道围岩控制提供有效技术参考。

关键词:切顶卸压;应力转移;超前支护;围岩控制;三软厚煤层

doi:10.16186/j.cnki.1673-9787.2024060008

基金项目:国家自然科学基金资助项目（52574111）；河南省科技攻关项目（252102320206）；河南理工大学杰出青年基金项目（J2025-1）；河南省高校基本科研业务费专项资金资助项目（NSFRF2502082）

收稿日期:2025/06/05

修回日期:2025/09/23

出版日期:2026/01/28

Surrounding rock control technology and its application based on synergistic roof cutting and support in advanced mining roadways of thick coal seams under three-soft conditions

Liu Shaowei1,2, Mi Chao1, He Deyin1, Li Xiaopeng1

1.School of Energy Science and Engineering， Henan Polytechnic University， Jiaozuo  454003， Henan， China；2.State Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization， Jiaozuo  454003， Henan， China

Abstract: Objectives To address the problems of severe surrounding rock stress concentration， complicated advance support procedures with poor effectiveness， and slow working-face advancement in advanced mining roadways of thick coal seams under three-soft conditions， a study on synergistic surrounding rock control technology integrating roof cutting and support was conducted.  Methods Taking the belt transportation roadway of the 12203 working face in Zhaojiazhai Coal Mine as the engineering background， numerical simulations combined with field industrial tests were employed to analyze the factors influencing surrounding rock stress concentration in the advanced roadway section. The optimal roof-cutting scheme and advanced anchor-cable reinforcement support scheme were investigated. Results The results indicate that the superposition of the advanced and lateral abutment pressures of the working face with the lateral abutment pressure induced by roadway excavation has a significant influence on surrounding rock stress concentration in the advanced support zone. Numerical simulations demonstrate that roof cutting can effectively alleviate stress concentration by transferring surrounding rock stress， modifying the load distribution of the mining area， and relieving pressure. The optimal roof-cutting parameters were determined as a cutting angle of 10° and a cutting depth of 18 m， and the corresponding advanced anchor-cable reinforcement support scheme was established. Field application of the synergistic “roof cutting-support” technology in the belt transportation roadway of the 12203 working face shows that stress concentration in the shallow surrounding rock of the advanced zone was effectively mitigated， advance passive support was eliminated， and safe roadway operation was ensured. Conclusions The synergistic surrounding rock control technology integrating roof cutting and support can effectively relieve stress and reinforce support， ensuring the safety and stability of advanced mining roadways while enabling safe and efficient working-face advance. This technology provides a valuable technical reference for surrounding rock control in similar thick coal seam mining roadways under three-soft conditions.

Key words: roof cutting and pressure relief; stress transfer; advance support; surrounding rock control; thick coal seams under three-soft conditions