中国岩溶2012，Vol.31Issue(1)：82-86,5.
干密度和含水率对岩溶地区黄壤抗剪强度的影响——以重庆市南川区木渡河小流域为例
The effect of dry density and soil water content on yellow soil shearing strength in karst area
摘要
Abstract
The limit equilibrium method from mimetic statics numeric method, a recommended method in current specifications, is adopted at present in most calculations to the stability of landslide. To most permanent and transient operating conditions in landslides, the result calculated with this method is in accordance with the result evaluated by geologic theory; but to the operating conditions in earthquakes, most results are quite different with each other. The Jinjiang landslide is a giant one near the dam of the Baihetan power plant. In the calculations to the slide with limit equilibrium method, 3 steps are adopted in the study. Firstly, based on the calculation ways for anti-seismic stability of the earth-rock dam specified by "The Seismic Design of Hydraulic Structure DL5073-2000", values such as the dynamic distribution coefficients at different heights and the horizontal seismic force component and the dynamic distribution coefficient at the corresponding heights are figured out by means of the handling method to earthquake effect. Secondly, the horizontal acceleration value of the earthquake force that acting on the whole landslide mass is solved. Lastly, the stability calculation is done with the horizontal acceleration value. The results prove that, under seismic operating conditions, the Jinjiang slide is stable as a whole with the stability coefficient being 1, 23-1. 45, which is not only quite in accordance with the results by geologic analysis, but also avoids the discrepancy between the mimetic statics numeric method calculating results and practical geologic analysis results.关键词
土壤含水率/土壤干密度/土壤抗剪强度/黄壤/岩溶地区Key words
Jinjiang Landslide/ earthquake operating conditions seismic peak accelerations stability分类
建筑与水利引用本文复制引用
倪九派,高明,魏朝富,谢德体..干密度和含水率对岩溶地区黄壤抗剪强度的影响——以重庆市南川区木渡河小流域为例[J].中国岩溶,2012,31(1):82-86,5.基金项目
国家水体污染控制与治理科技重大专项课题(2012ZX07104-003)、中央高校基本科研业务费项目(XDJK2012B003)、重庆市工程技术研究中心建设项目(CSTC,2010CB7008) （2012ZX07104-003）
