采矿与安全工程学报Issue(6)：914-919,6.
顶底双软型薄煤层快速沿空留巷技术研究
Study on technology of gob-side entry retaining in thin seam surrounded by soft roof and floor
摘要
Abstract
In response to the special mining condition of the weak roof and floor in the working face of the thin seam, the difficulties and key technology of gob-side entry retaining in thin seam have been proposed. By using the theory analysis and numerical simulation, the failure characteristics and defor-mation law of surrounding rocks of gob-side entry retaining in thin seam have been analyzed. The structure model of gob-side entry retaining has been set up in thin seam coal mining. At the same time, Through the numerical simulation analysis and expounding the basic principle gob-side entry retaining in thin seam, it has been put forward that the optimization scheme of gob-side entry retaining was to“built waste stone wall in the goaf first, then timely build cemented filling body and long steel beams and monomer pillar support in roadway at last”. Accordingly, the gob-side entry retaining speed was improved obviously. The result of the actual measurement in Zhaoguan coal mine shows that the roof subsidence is only 197 mm;the floor heave is 83 mm;the convergence of two ribs is 327 mm, conse-quently, the mining efficiency reached up to 18 m/d.关键词
顶底双软型薄煤层/沿空留巷/围岩破坏与变形/充填体Key words
soft roof and floor in thin coal seam/gob-side entry retaining/deformation and failure of surrounding rocks/filling body分类
矿业与冶金引用本文复制引用
巨峰,孙强,黄鹏,何琪..顶底双软型薄煤层快速沿空留巷技术研究[J].采矿与安全工程学报,2014,(6):914-919,6.基金项目
国家自然科学基金青年基金项目(51304206) （51304206）
