煤矿安全2017，Vol.48Issue(9)：215-217,3.DOI:10.13347/j.cnki.mkaq.2017.09.059
深部高地应力软岩巷道围岩分区破裂模拟及支护设计
Simulation of Layering Fracture of Surrounding Rock in Soft Rock Roadway with Deep High Ground Stress and Its Support Design
摘要
Abstract
Based on the phenomenon analysis of deep roadway layering fracture,the physical simulation test of deep roadway was carried out.Test results show that the roadway failure starts from floor,and then the failure develops to side walls and roof.Cracks develop at the arch of the foot,and obvious displacement appears at the arch of the foot;the distance of the farthest crack in left wall from the roadway's side is 80 mm,the range of fragmented body width is 3 mm to 20 mn;the distance of the farthest crack in right wall from the roadway's side is 62 mm,the range of fragmented body width is 3 mm to 17 mm;the distance of the farthest crack in floor from the roadway's side is 120 mm,the range of fragmented body width is 10 to 33 mm;the distance of roof farthest crack from the roadway's side is 60 mm,the range of fragmented body width is 5 to 35 mm.The roadway is graded supported by the technology of high pre-stressed bolt and anchor grouting according to the deformation characteristics of roadway.Engineering application shows that the deformation of surrounding rock has been effectively controlled.关键词
深井/高地应力/分次支护/分区破裂/软岩巷道/相似模拟/支护设计Key words
deep well/high ground stress/graded support/layering fracture/soft rock roadway/analog simulation/support design分类
矿业与冶金引用本文复制引用
邓东生,薛俊华,任波..深部高地应力软岩巷道围岩分区破裂模拟及支护设计[J].煤矿安全,2017,48(9):215-217,3.基金项目
国家自然科学基金资助项目(51427804) （51427804）
国家科技支撑计划资助项目(2012BAF14B00) （2012BAF14B00）
安徽省科技攻关计划资助项目(1510115227) （1510115227）
