引水渠道在经过峡谷区时,由于其本身地形地质条件限制,大都是沿山开渠、隧洞、渡槽及倒虹管等。在岩溶发育地区由于岩体石质坚硬、透水性强、持水性差,地下水径流速度大、强度高,对渠道内侧墙的冲刷侵蚀较大,对隧洞围岩的划分影响较大。本文以王二河水库向黄果树瀑布补水工程为例就岩溶地质对隧洞和渠道的影响及工程处理措施进行分析探讨。 When diversion channels pass through the gorge area, they are mostly open ditches, tunnels, aqueducts and invert pipes due to their own topographic and geological conditions. In the karst development area, due to the strong stony rock mass, water permeability, poor water holding capacity, large groundwater runoff velocity and high strength, erosion and erosion to the inner wall of the channel are large, which greatly affect the division of the surrounding rock of the tunnel. This paper takes Wang Erhe reservoir to Huangguoshu waterfall replenishment project as an example to analyze the impact of karst geology on tunnels and channels and engineering treatment measures.