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为解决松软、破碎地层中岩石巷道的维修方式选择难题,分析了五矿己四采区埋深540~850 m的岩巷的损坏特点和原因,重点对地质构造、软岩、地下水可能的影响规律进行了剖析,针对不同巷损情况,在肯定传统金属支架维修方法的基础上,提出了分别运用“新锚网喷支护、锚网喷+锚索支护、底板锚注支护”维修原锚网喷巷道的新理念和新方法,并给出了适用标准和具体的支护参考参数,工程实践中取得良好的维修效果。
In order to solve the problem of the selection of maintenance methods for rock roadway in soft and broken strata, the damage characteristics and causes of rock tunnel with depth of 540 ~ 850 m in the fourth mining area of Minmetals have been analyzed. The possible impact on geological structure, soft rock and groundwater On the basis of affirming the maintenance methods of traditional metal brackets, aiming at different lane loss conditions, the author put forward that using “new anchor net spray support, anchor net spray + anchor support, floor anchor support ”The maintenance of the new concept of the anchor net spray roadway and the new method, and gives the applicable standards and specific support reference parameters, the project achieved good results in maintenance.