包罗水库大坝深厚覆盖层地基稳定性研究

A Study on the Stability of Dam Foundation with Deep and Thick Overburden at Baoluo Reservoir

包罗水库是解决云龙县河比江两岸灌溉及农村供水安全问题的重点工程,大坝坝高69.5 m。文章针对大坝坝基的深厚覆盖层,开展了一系列室内和原位试验,查清了地层的承载能力、变形特性、渗透特性等物理力学性质,对其可能出现的工程地质问题进行了深入的验算和分析,并提出了经济可行的地基处理方案。为峡谷区深厚覆盖层上的大坝建设提供了有益的借鉴。

Baoluo reservoir is a key project that ensures the irrigation for both banks of Bijiang River and the safety of rural water supply of Yunlong County.The dam height is 69.5m.Based on the deep and thick overburden on dam foundation,the paper verifies the strata＇s bearing capacity,the deformation characteristics and the permeability through a series of laboratory and in-situ tests,and a deep analysis is made on the possible engineering geological problems.Finally,an economically feasible solution is proposed,which can be well referenced by similar projects.