以围岩为承载体的高压管道设计准则与工程应用

钢筋混凝土衬砌高压管道设计中最主要的问题是要防止高压水外渗造成的水量损失和对山体边坡、电站建筑物等的危害.采用钢筋混凝土衬砌高压管道的前提是所在山体的围岩应该相对新鲜完整,其设计的核心是要对地形地质条件、地应力、和高压水作用下围岩渗透性、围岩水力稳定性等进行充分的研究.本文通过对水电站混凝土衬砌高压管道实例的分析,对高水压作用下钢筋混凝土衬砌高压管道设计常用的最小覆盖厚度准则、水力劈裂准则、和最小地应力准则的相互关系和应用条件进行讨论.

Design criteria and engineering application of concrete-lined high pressure power tunnels

One of the big concerns in employing such as high pressure tunnel should be paid on the potential risk of flow loss,hazard of surface slopes and power stations caused by water seepage. The engineering design for this type of tunnels should be focus on the reconnaissance and utilization of the surrounding rock geotechnical conditions and crustal stress state as well as the permeability of rock mass under high water pressure,etc. Based on the experience in applying this concept to the design of high pressure ...