中厚煤层切顶卸压无煤柱自成巷技术研究与应用  

Research and Application of Self-forming Roadway Technology for Cutting Top and Relieve Pressure No Pillar in Medium-thickness Coal Seam

作　　者：高超 张宇 GAO Chao;ZHANG Yu(School of Coal Engineering,Shanxi Datong University,Datong 037003,China)

机构地区：[1]山西大同大学煤炭工程学院,山西大同037003

出　　处：《煤炭技术》2025年第3期8-12,共5页Coal Technology

基　　金：山西省2024年度研究生教育创新计划实践创新项目基金(2024SJ374);山西大同大学2022年度产学研项目(2022CXY3)。

摘　　要：为提升开采效率并避免传统充填方式的应力集中问题,探索切顶卸压无煤柱自成巷技术在中厚煤层中的应用。以晋华宫矿8501工作面为例,通过理论分析、数值模拟与现场监测,制定“补、切、护、支”沿空留巷方案。重点模拟不同切顶高度与角度下的围岩应力与顶板位移,结果显示,优化后的切顶参数能促进顶板垮落填充采空区,阻断应力传导,优化巷道应力环境,保障巷道稳定,为中厚煤层开采提供科学依据。In order to improve the mining efficiency and avoid the stress concentration problem of the traditional filling method,explore the application of cutting top and relieve pressure no pillars selfforming technology in medium-thick coal seams.Taking 8501 working face in Jinhuagong mine as an example,the"filling,cutting,protecting and supporting"scheme is formulated through theoretical analysis,numerical simulation and on-site monitoring of the gob-side entry rataining.The focuses on simulating the surrounding rock stress and roof displacement under different heights and angles of roof cutting,and the results show that the optimized roof cutting parameters can promote the roof collapse to fill the hollow area,block stress conduction,optimize the stress environment of the roadway,and ensure the stability of the roadway,which provides a scientific basis for the mining of medium-thickness coal seams.

关 键 词：中厚煤层 切顶卸压 无煤柱 自成巷技术 沿空留巷 

分 类 号：TD353[矿业工程—矿井建设] TD32