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地下采煤引起的地表下沉常常对地面建筑物产生一定程度的影响,轻者使建筑物产生下沉或倾斜,重者则使建筑物产生裂缝、断裂或坍塌。因此,采矿下沉区建筑物的维护(特别是历史性建筑)是一项很重要又很普通的工作。采用千斤顶底撑技术维修那些受到地表变形破坏的建筑物,和普通维修方法相比,其突出的优点是对原有建筑物的使用干扰很小,同时,施工占地面积小,周期短、费用也较低。
Surface subsidence caused by underground coal mining often has a certain degree of impact on the ground buildings. The light ones cause the buildings to sink or tilt, while the heavy ones cause the buildings to crack, break or collapse. Therefore, the maintenance of buildings in mining subsidence areas, especially historic buildings, is an important and common task. The use of jacking underpinning technology to repair those buildings damaged by surface deformation, compared with the general maintenance methods, the outstanding merit is the use of the original building interference is very small, at the same time, the construction area is small, the cycle is short, the cost Also lower.