采动影响下厚坚硬顶板巷道围岩控制技术  

Technology of controlling surrounding rock in roadway with thick and hard roof under mining influence

作　　者：晋新林[1] 

机构地区：[1]晋城煤业集团古书院矿,山西省晋城市048000

出　　处：《中国煤炭》2014年第5期48-51,共4页China Coal

基　　金：国家自然科学基金(51274086);教育部高校博士点基金-优先发展领域(20124116130001);河南省基础与前沿研究(122300410115)

摘　　要：晋煤集团古书院矿15#煤层工作面直接顶坚硬、底板松软,预留巷道受动压影响变形十分严重。针对这一问题,采用在采掘工作面前方预裂爆破方法将坚硬的直接顶板切断,防止煤柱侧顶板悬顶,改善预留巷道应力状态,同时采用中空注浆锚索对预留巷道围岩进行加固。试验结果表明,预留巷道维护状况得到了根本改善。In the 15# coal seam working face in Gushuyuan Mine of Jincheng Anthracite Min- ing Group, there are some problems： the direct roof is thick and hard~ the floor is soft; the re- served roadway is severely deformed because of the dynamic pressure of mining. Therefore, the presplitting blasting method is applied at the head of 15# coal seam working face to cut off the di- rect roof, so as to prevent the roof beside coal pillar overhang and improve the stress state of the reserved roadway; and in the meantime, the hollow grouting anchor cable is used to reinforce the surrounding rock of the roadway. The test results show that the reserved roadway is radically improved.

关 键 词：厚坚硬顶板 巷道支护 巷道顶板 爆破弱化 中空注浆锚索 

分 类 号：TD353[矿业工程—矿井建设]