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本文通过断层地区的一个引水压力隧洞的设计、施工和运行观测,说明了以下几个问题:1.设计断层区的隧洞衬砌时,应考虑一部分外水压力以抵消部分内水压力;2.设计中合理选定岩石的力学参数非常重要。这些参数如选择不当,将使设计发生错误;3.不合理的灌浆可能人为地增加顶拱山岩压力;4,隧洞衬砌运行时具有一定的温度应力,但其值不大,仅为钢筋允许拉应力的十分之一左右。
In this paper, the design, construction and operation observation of a diversion tunnel in the fault area illustrate the following issues: 1. When designing the tunnel lining of the fault area, part of the external water pressure should be considered to offset part of the internal water pressure. 2. Design In a reasonable choice of rock mechanical parameters is very important. If improper selection of these parameters will make the design error; 3. Unfair grouting may artificially increase the pressure on the top arch rock; 4, Tunnel lining operation has a certain temperature stress, but its value is not only allowed by the steel Tensile stress is about one-tenth.