采矿与安全工程学报2011，Vol.28Issue(2)：198-203,6.
中空注浆锚索在高地应力松软煤巷中的应用研究
Application of Hollow Grouted Anchor Cable in Soft Coal Roadway Under High In-Situ Stress
摘要
Abstract
The supporting technology of hollow grouted anchor cable combined with high performance bolt can effectively the instability of high ground stress roadway in soft coal seams.There are some problems during deep driving for the return airway of fully mechanized sub-level caving face 3313 in a coal mine, such as great deformation and supporting failure, etc. The main factors of roadway instability are high ground stress,poor mechanical properties of surrounding rock, and unreasonable support parameters. Releasing pressure under high prestressed bolt supporting and improving the mechanical properties of roof strata in a large range by grouting using hollow grouted anchor cable are the keys of the technology. This technology can effectively control the development of pla stic zone, enhance the strength of roof strata and improve the stress state of bolt (anchor cable). Practice shows that the technology can reduce the damaged zones to 1 m and decrease the deformation of roadway roof, floor, and roadway’s sides by 63.6％, 53.3％ and 51.7％ respectively, which also effectively controls the deformation of surrounding rock in this roadway.关键词
中空注浆锚索/高地应力/松软煤巷/数值模拟/高性能锚杆Key words
hollow grouted anchor cable/ high in-situ stress/ soft coal roadway/ numerical simulation/ high-effective bolt分类
矿业与冶金引用本文复制引用
姚强岭,李波,任松杰,李学华..中空注浆锚索在高地应力松软煤巷中的应用研究[J].采矿与安全工程学报,2011,28(2):198-203,6.基金项目
江苏省"青蓝工程"项目 （）
国家自然科学基金项目(50974118) （50974118）
教育部新世纪优秀人才支持计划项目(NCET-09-0727) （NCET-09-0727）
江苏高校优势学科建设工程项目 （）
