新疆水利工程西域砾岩边坡加固关键技术研究与应用

Research and application of key technologies for strengthening conglomerate slope in the western regions of Xinjiang water conservancy project

鉴于西域砾岩边坡长期浸没水中软化变形后失稳、因水位变动对边坡表面掏刷破坏、内外水头差过大导致的滑坡、高速水流对坡脚掏刷导致坡顶崩塌等问题,该地层条件下的水利工程高边坡广泛存在,传统的水利工程边坡加固形式已经无法解决此类边坡的问题。为了保证库区内西域砾岩高边坡稳安全定性,实现工程安全性和经济型的平衡,结合新疆迪那河五一水库工程面临库区内联合进水口西域砾岩高边坡加固的问题,提出了一套适用西域砾岩高边坡加固的方法,该方法成功的解决了西域砾岩边坡在蓄水后遇到的边坡软化失稳和长期安全运行的问题,为今后同处西域砾岩的水利工程边坡处理提供借鉴和帮助。

Considering the instability of the conglomerate slope in the Western Regions after long-term immersion in water and softening deformation,the damage to the slope surface caused by water level changes,the landslide caused by the large difference in internal and external water heads,and the collapse of the slope top caused by high-speed water flow brushing the slope foot,water conservancy engineering high slopes under this geological condition are widely present,and traditional forms of slope reinforcement in water conservancy engineering are no longer able to solve the problems of such slopes.In order to ensure the stability and safety of the high slope of the conglomerate in the western region of the reservoir area,and achieve a balance between engineering safety and economic efficiency,a set of suitable method for strengthening the high slope of conglomerate in the western region of the joint water intake of the Dina River Wuyi Reservoir project in Xinjiang has been proposed.The method successfully solved the problems of slope softening instability,and long-term safe operation encountered by the conglomerate slope in the western region of this project after water storage.It provides reference and assistance for the slope treatment of water conservancy projects located in the same western region conglomerate in the future.