在重力坝岩石基础中常遇有缓倾角软弱夹层,其抗滑能力远低于坝基岩石。这种软弱夹层对重力坝的基础稳定起控制作用。据不完全统计,我国有软弱夹层问题的大坝基础有近百处。处理软弱夹层往往需要大量工程费用。有的工程由于事先未查清软弱夹层问题,常造成停工,修改设计,拖延工期,甚至建成后需 In the gravity dam rock foundation often encountered gentle dip weak interbeds, its anti-skid capacity is much lower than the dam foundation rock. This weak interlayer plays a controlling role in stabilizing the foundation of the gravity dam. According to incomplete statistics, there are nearly 100 dams in our country that have weak interlayer problems. Handling of weak interlayers often requires significant engineering costs. Some projects due to the lack of understanding of the mezzanine problem, often resulting in work stoppage, modify the design, delay the construction period, and even after the completion of the need