采矿与安全工程学报2017，Vol.34Issue(2)：208-213,6.DOI:10.13545/j.cnki.jmse.2017.02.002
大倾角"三软"煤层巷道关键部位强化支护技术研究
Enhanced support technology for key area of the roadway in large inclined angle "three-soft" coal seam
摘要
Abstract
In large-inclined-angle "three-soft" coal seam, the severe deformation in the surrounding rock of roadway made support more difficult. In order to improve the control effect of this kind of roadway surrounding rock, a mechanical model of the roadway surrounding rock was established, through which the stress of roof, two sides and floor of the roadway was analysed systematically, and the key parts and main factors affecting surrounding rock deformation were determined. Combined with the change characteristics of bending strength in different layer combination in the roadway with com-posite roof , the enhanced supporting mechanism of the key parts of the roadway was analyzed, and the combined support technology ideas of "strengthening-sides-reinforcing-roof and strengthen-ing-roof-protecting-sides" was put forward. The engineering practice has shown that the application of the enhanced support technology in key parts with rational layer selection effectively and significantly improves the overall carrying capacity of roadway in large-inclined-angle three-soft coal seam, and the roadway surrounding rock deformation is reduced by more than 80%.关键词
大倾角/"三软"煤层/层位选择/联合支护Key words
large inclined angle/three-soft coal seam/layer selection/combined support分类
矿业与冶金引用本文复制引用
王旭锋,汪洋,张东升..大倾角"三软"煤层巷道关键部位强化支护技术研究[J].采矿与安全工程学报,2017,34(2):208-213,6.基金项目
国家重点基础研究发展计划(973)项目(2015CB251600) （973）
国家自然科学基金项目(51474206,51404254) （51474206,51404254）
江苏省基础研究计划项目(自然科学基金)(BK20150051) （自然科学基金）
江苏高校优势学科建设工程项目 （）
