摘要
高原碎石土力学成因比较特殊,且在西藏高原地区分布十分广泛;碎石土边坡的稳定性问题又与碎石土的抗剪强度密切相关,因此科学地开展碎石土的力学试验,准确地获取其抗剪强度指标是解决工程中碎石土强度问题的基础。详细阐述碎石土大型剪切试验的国内外研究现状,采用大型室内及现场两用直剪仪分析西藏邦铺矿区碎石土力学性质。并结合大型剪切试验、室内试验成果、理论公式,利用国际知名软件FLAC3D建立地质模型,分析了西藏邦铺北东碎石土边坡稳定性,为同类型碎石土地区边坡稳定性分析提供了可行的研究方法。
Plateau gravel soil is widely distributed in the Tibet Plateau. The shear strength of gravel soil is closely related with the stability of slope. In the present research, large-scale shear tests on gravel soils in China and a-broad are reviewed firstly. By using the large-scale indoor and field dual-purpose direct shear apparatus, the me- chanical properties of gravel soils in Bangpu mining area in Tibet are analyzed. Furthermore, in association with di-rect shear test and indoor test results as well as theoretical formulas, a geological model is established in FLAC3D to analyze the slope stability in this area. The research results offer a feasible method for similar analysis on gravel soils.
出处
《长江科学院院报》
CSCD
北大核心
2013年第6期63-67,共5页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金面上项目(41172281)
中央高校基本科研业务费专项资金项目(摇篮人才计划CUGL100413
特色学科团队CUG090104)
国家科技部973项目(2011CB710604)
关键词
高原碎石土
大型剪切试验
边坡
稳定性分析
plateau gravel soil
large direct shear test
slope
stability analysis
