陕西煤炭2025，Vol.44Issue(12)：26-31,6.DOI:10.20120/j.cnki.issn.1671-749x.2025.1204
倾斜煤层动压巷道支护-卸压协同控制技术研究
Dynamic roadway support-pressure relief collaborative control of inclined coal seam
HU Qiwang 1GUO Lei2
作者信息
- 1. Sinopec Great Wall Energy and Chemical(Ningxia)Co.,Ltd.,Yinchuan 750411,China
- 2. CCTEG Mining Research Institute Co.,Ltd.,Beijing 100013,China
- 折叠
摘要
Abstract
In response to the significant deformation and damage problems of inclined coal seam mining roadway,based on the engineering geological conditions of the mining roadway in the 10#coal seam working face of Yinxing No.2 main min-ing,the development of cracks in the surrounding rock of the roadway was revealed through on-site coal rock geomechanical tests.The dynamic sources of instability and failure of the surrounding rock of the roadway were analyzed,and a support-modification-relief collaborative control technology was proposed.The research results indicate that cracks are developed in the shallow surrounding rock of the roof of the Yinxing No.2 inclined coal seam mining roadway,while the structural integri-ty of the deep surrounding rock is good.The surrounding rock on the side of the roadway shows obvious fragmentation and collapse phenomena;After the mining of the working face,the key rock layers at the top cannot collapse and form a stable structure in a timely and sufficient manner.The surrounding rock mass at the top will form a cantilever structure on the pro-tective coal pillars and transmit stress to adjacent roadway,providing a dynamic source for the instability of the mining road-way.Based on the structure of the surrounding rock and the dynamic sources of instability of the surrounding rock in the roadway,a collaborative control technology for the support-modification-relief of the surrounding rock in the Yinxing No.2 inclined coal seam mining roadway was proposed.A technical plan for underground implementation was formulated,and un-derground experiments were carried out with good control effect.关键词
倾斜煤层/回采巷道/塑性区/支-改-卸协同/围岩控制Key words
inclined coal seam/mining roadway/plastic zone/support-reform-relief coordination/surrounding rock control分类
矿业与冶金引用本文复制引用
HU Qiwang,GUO Lei..倾斜煤层动压巷道支护-卸压协同控制技术研究[J].陕西煤炭,2025,44(12):26-31,6.
