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1概述亚美大宁煤矿二、三采区水仓设计净断面为5500×5700矩形,长度99.66m。巷道支护采用锚网支护形式,水仓煤柱厚度为15米,打设对穿锚索对煤柱进行加固。目前巷道掘进基本成型,虽然煤柱变形不明显,但锚索受力明显增大。为了有效控制水仓围岩变形,确保水仓长期、安全的使用,矿方研究决定,对水仓两侧煤柱实施锚注综合加强加固。方案选用水泥浆注浆加固与锚网支护相结合的锚注加固联合
1 Overview Asia and the United States Daning coal mine two, three mining area designed for the water section of 5500 × 5700 rectangular, length 99.66m. Roadway support using the form of anchor network support, the water column coal pillar thickness of 15 meters, laying on the anchor rope on the coal pillar reinforcement. At present, basic modeling of roadway excavation, although coal pillar deformation is not obvious, but the anchor cable force increased significantly. In order to effectively control the deformation of surrounding rock of watercourse and ensure the long-term and safe use of watercourse, the research and decision of the mine decided to strengthen and reinforce the grouting of the coal pillar on both sides of the watercourse. The project uses the combination of grouting grouting reinforcement and bolting and bolting reinforcement