摘要
对湖北省西部某高速公路宜昌-恩施段主要边坡岩体结构面(层面)的抗剪强度参数进行了较系统的试验研究,包括岩体结构面的野外地质调查、岩体结构面原位直剪试验、软弱结构面室内模拟剪切试验及岩体力学参数估值等。对各种试验数据进行整理、分析和对比,得到了层面抗剪强度参数。在岩体工程分类的基础上,利用Hoek-Brown经验方法对各类岩体强度参数进行了估算。综合以上多种数据,并考虑岩体结构面所处具体地质条件,提出了各类岩体结构面强度参数建议值。
The paper studies the shear strength parameters of consequent slope bedding surface of a certain freeway of Yichang-En＇shi segment in Hubei Province, including field investigation,in-situ shear testing of weak bedding surface, indoor simulation testing, and the experiential method estimating parameters of rock mechanics. Then shear strength parameters of bedding surface are provided by calculating and analyzing experimental data. On the basis of rock mass engineering classification, shear strength parameters of rock mass are estimated by Hock-Brown criteria. The paper presents reasonable values of shear strength parameter of bedding surface, and provides a universal and feasible method for practical geological condition of engineering rockmass.
出处
《地质科技情报》
CAS
CSCD
北大核心
2005年第B07期184-188,共5页
Geological Science and Technology Information
关键词
原位剪切试验
抗剪强度指标
软弱层面
参数估算
in-situ shear testing
shear strength parameter
weak bedding surface
parameter estimation
