摘要
为了提高厚煤层开采巷道支护的安全性,降低巷道围岩应力和变形量,以同煤集团某矿为工程背景,运用FLAC^(3D)数值模拟软件分别对开掘卸压巷、传统放顶煤和错层位联合支护方法展开对比性实验,分析不同方法下巷道的支护情况。结果表明:通过相邻工作面巷道之间形成的"联合锚固区",错层位巷道联合支护可大幅提高巷道围岩稳定性、减少巷道围岩变形量、降低煤柱上方的支承应力。
In order to improve the safety of roadway support during thick coal seam mining and reduce the stress of surrounding rock and deformation of surrounding rock, based on the engineering background of a mine of Datong Coal Mine Group, the FLAC^（3D） numerical simulation software is used to compare the methods of excavating pressure relief tunnel, traditional caving mining method and split-level gateroad combined support method. The support conditions of roadway under different methods are analyzed. The result shows that the split-level gateroad combined support method combines anchorage zone formed by the adjacent working face roadway can greatly improve the stability of surrounding rock, reduce the deformation of roadway surrounding rock and support stress above coal pillar.
作者
王志强
徐春虎
孙中文
苏泽华
WANG Zhiqiang;XU Chunhu;SUN Zhongwen;SU Zehua(College of Resource ＆ Safety Engineering, China University of Mining and Technology （Beijing）, Beijing 100083, China;Xinjiang Engineering Institute, Urumchi 830023, China)
出处
《煤矿安全》
CAS
北大核心
2018年第5期55-58,共4页
Safety in Coal Mines
基金
国家自然科学基金青年科学基金资助项目(51404270)
中央高校基本科研业务费专项资金资助项目(2011QZ06)
国家级大学生创新训练资助项目(C201501044)
关键词
相邻巷道
联合支护
联合锚固区
围岩稳定
支承应力
数值模拟
卸压巷
adjacent roadway
combined support
combined anchorage zone
stability of surrounding rock
bearing stress
numerical simulation
pressure relief tunnel
