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为解决深部高应力大变形巷道围岩控制难题,采用理论分析和现场踏勘的方法,分析了双河煤矿深部巷道大变形机理.提出“围岩改性增强+围岩表面应力恢复+围岩卸压应力转移”相结合的围岩控制对策,并结合实际提出“钻锚注一体化+高预应力多维锚索桁架支护系统+顺层钻孔与巷道基角药壶爆破卸压”成套技术体系,通过现场工业试验,取得良好的技术效果.
In order to solve the problem of surrounding rock control in deep tunnel with high stress and large deformation, theoretical analysis and site reconnaissance method are used to analyze the mechanism of large deformation in deep tunnel of Shuanghe Mine. Pressure relief stress transfer “combined with the surrounding rock control measures, combined with the actual” drilling and anchor injection integration + high prestressed multi-dimensional anchor cable trussed support system + "Complete technical system, through the field test, and achieved good technical results.