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根据灰坝及水工建筑物区域煤层开采情况,选取合理参数,对灰坝及附属水工建筑物移动变形情况进行了演算,结果表明灰坝及水工建筑物经受了Ⅱ级采动影响。灰坝及水工建筑物现场勘查结果表明,采动对灰坝及水工建筑物的结构影响轻微,经过简单维修加固可以消除采动影响。井下开采和灰坝及水工建筑物保护必须统筹兼顾,才能做到在充分合理回收煤炭资源的基础上,保证灰坝及水工建筑物的正常安全使用。
According to the situation of coal seam mining in the area of ash dam and hydraulic structure, the reasonable parameters are selected to calculate the displacement of the dam and its subsidiary hydraulic structures. The results show that the dam and hydraulic structure have been subjected to the grade Ⅱ mining. The results of on-site inspection of the ash dam and hydraulic structures show that the mining has a slight impact on the structure of the ash dam and the hydraulic structures. After simple maintenance and reinforcement, the mining effect can be eliminated. Downhole mining and protection of ash dam and hydraulic structures must be balanced in order to achieve the normal and safe use of ash dam and hydraulic structures on the basis of full and reasonable recovery of coal resources.