采矿与安全工程学报2017，Vol.34Issue(2)：228-234,7.DOI:10.13545/j.cnki.jmse.2017.02.005
超前立柱式沿空留巷技术研究
Technology of gob-side entry retaining with advance standing props
摘要
Abstract
In view of the limitations of conventional technology of gob-side entry retaining which con-strains the recovery speed at the working face and increases the risk of gob work, a new technology of gob-side entry retaining with advance standing props was proposed. For successful implementation of the technology, the technology of roadway forming with two-time excavation and high strength bolt support were used to keep stability of the wider roadway, the sandstone-filled steel props were chosen as gob-side support bodies, whose high strength performance can better cut and support the roof to retain one part of the wide roadway; steel wire mesh, wind tube cloth and shotcrete were used to prevent air leakage between the roadway and gob, which realized the "Y" or "U" style ventilation mode. The re-sults have shown that the technology has good effects on the control of the roadway surrounding rock and promotes the cost reduction and efficiency increase of the mine. The research achievements can en-rich the technology of gob-side entry retaining and provide reference for working face design in other mines.关键词
沿空留巷/宽巷道/钢管砂石柱/减跨Key words
gob-side entry retaining/wider roadway/sandstone filled steel prop/reducing span分类
矿业与冶金引用本文复制引用
贾民,徐营,姜希印,柏建彪..超前立柱式沿空留巷技术研究[J].采矿与安全工程学报,2017,34(2):228-234,7.基金项目
国家自然科学基金项目(51204167,51174195) （51204167,51174195）
矿山地下工程教育部工程研究中心开放基金项目(2015KF03) （2015KF03）
