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南水北调中线工程工程线路长,地质条件复杂,特别是渠道沿线穿越煤矿区,其中较大的就有两处,即焦作煤矿区和禹州煤矿区。煤矿区沿线长,地下地质条件复杂、特殊,地质情况也难摸清。如不对沿线总干渠进行保护,易造成渠道沉陷、裂缝、漏水等,对工程的安全运行产生严重危害,而且其处理难度和处理投资均较大。本文结合沙河南～黄河南段中的禹州煤矿区实例,介绍总干渠煤矿采空区保护设计。
The middle route of the South-to-North Water Diversion Project is long in line with complex geological conditions, especially through the coal mines along the channels. There are two larger ones, that is, the Jiaozuo coal mine and the Yuzhou coal mines. Long along the coal mining area, underground geological conditions are complex, special, difficult to find out the geological conditions. Without the protection of the main canal along the line, channel subsidence, cracks and water leakage may easily result in serious damage to the safe operation of the project. Moreover, the difficulty in handling and the investment in handling are large. In this paper, we combine the case of Yuzhou coal mine in the south of the Yellow River to the south of Yellow River to introduce the protection design of the gob of coal mines in the main canal.