摘要
四道沟-邓家屋场滑坡是三峡库区规模最大的滑坡之一，其中四道沟附近滑体为松散堆积的碎石土覆盖层，最大厚度近40m，地下水异常丰富。研究表明，滑坡稳定性对地下水位变化敏感，降低地下水位对提高滑坡稳定性最有效、最经济。在排水洞施工困难、排水效果无法保证的情况下，提出了洞、孔、井相结合的立体排水思想并付诸实施。实践证明，立体排水效果好、施工难度小，为仅仅通过地下排水措施来治理地下水丰富的大型覆盖层滑坡提供了可供借鉴的实践经验。
The landslide from sidaogou to dengjiawuchang is one of the most large landslides in three gorges reservoir area and the landslide nearby sidaogou is incompact debris overburden with. maximum thickness up to forty meters and abundant ground water. The investigation indicates that the stability of landslide is sensitive to changes of ground water level, to reduce the ground water level is the most efficient and most economical method to rise the stability of landslide. On the conditions that the excavation of discharge tunnel is very difficult and the efficiency of drainage is uncertain, a new tridimensional drainage technique, which combines hole, aperture and well, is presented and applied. The application validates that the new technique has high efficiency of drainage with few difficulty in excavation, which provides a valuable experimentation for the treatment to the large-scale overburden landslide with abundant ground water, only by the way of ground drainage.
出处
《土工基础》
2007年第6期43-46,共4页
Soil Engineering and Foundation
关键词
大型覆盖层滑坡
立体排水网络
地下水
large-scale overburden landslide, tridimensional drainage network, ground water
