采矿与安全工程学报2015，Vol.32Issue(6)：963-967,5.DOI:10.13545/j.cnki.jmse.2015.06.015
深部半煤岩回采巷道变形破坏机理及支护对策研究
Study on the gateway rock failure mechanism and supporting practice of half-coal-rock extraction roadway in deep coal mine
摘要
Abstract
In view of the non-conformity of discontinuous structure of surrounding rock of deep half coal rock roadway and deformation, taking the specific engineering geological conditions of a coal mine 92105 working face in the half coal rock roadway as background, Abaqus software has been used to build the half coal rock extraction roadway model, study the stress, displacement and plastic zone dis-tribution under the main controlling factors such as different coal and rock interface position and coal rock interface dip, and reveal the mechanism of deformation and failure of surrounding rock of deep soft rock roadway. It shows that the large deformation occurs in the tunnel in coal seam at the position of the side seam location; with the increase of the coal seam inclination, the concentration area of the principal stress difference gradually shift to the roadway's sides, which causes the decrease of the over-all deformation of roadway, and the large deformation only appears in the coal seam location. In re-sponse to the asymmetric deformation and failure characteristics of half coal crag tunnel surrounding rock, the asymmetric coupling support countermeasure in key parts has been put forward, and the results show that: this support countermeasure can effectively control the non-conformity of the rock defor-mation failure in half coal rock roadway, guaranteeing the stability of the roadway surrounding rock.关键词
半煤岩巷道/非连续性/破坏机理/AbaqusKey words
half coal rock roadway/non-continuity/failure mechanism/Abaqus分类
矿业与冶金引用本文复制引用
金淦,王连国,李兆霖,张继华..深部半煤岩回采巷道变形破坏机理及支护对策研究[J].采矿与安全工程学报,2015,32(6):963-967,5.基金项目
国家自然科学基金项目(51274191) （51274191）
教育部博士点基金项目(20130095110018) （20130095110018）
国家重点基础研究发展计划(973)项目(2014CB046905) （973）
