基于GSI的锦屏地下厂房岩体参数研究

范永波; 任爱武; 熊峥

基于GSI的锦屏地下厂房岩体参数研究

1.
中国科学院力学研究所环境力学重点实验室北京 100190;
2.
中国水利水电科学研究院北京 100038;
3.
中国科学院地质与地球物理研究所工程地质力学重点实验室北京 100029

基金项目:

国家自然科学基金(10702072);国家自然科学基金(40772188);中国科学院工程地质力学重点实验室开放式基金项目

详细信息

作者简介:
范永波,主要从事岩体力学与工程地质相关的科研工作.Email: ybfan@imech.ac.cn

中图分类号: TV223
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出版历程
- 收稿日期: 2010-01-08
- 修回日期: 2010-07-20
- 刊出日期: 2010-12-25

GEOLOGICAL STRENGTH INDEX METHOD FOR ROCK MASS PARAMETERS ABOUT JINPING UNDERGROUND CAVERNS

1.
Institute of MechanicsIMECH,Chinese Academy of Sciences,Beijing 100190;
2.
China Institute of Water Resources and Hydropower Research,Beijing 100038;
3.
Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029

摘要

摘要: 工程开挖卸荷后岩体参数研究一直是工程界关注的焦点,是稳定性评价的基础性工作。本文以锦屏地下厂房开挖工程为背景,通过对上下游边墙不同桩号段开挖揭露的岩体进行工程地质岩组划分,进行了开挖后岩体质量评价并对其进行分类,通过在GSI(Geological Strength Index)评价体系中引入Jv(节理数/m3),使评价体系相对合理化,经回归分析,对不同风化程度的岩体进行了力学参数求解,发现内聚力及内摩擦角的计算值与建议值吻合较好。
- 岩体力学参数 /
- GSI /
- 高地应力 /
- 锦屏 /
- 地下厂房
Abstract: The study on rock mass parameters after the excavation is always the focus of the engineering.It is the basic work of the rock stability evaluation.This paper is based on the engineering of JinPing Underground Caverns.It classifies the engineering geological rock group about different stake Nos,re-classify the rock mass and evaluation of its quality. It uses the Geological Strength Index(GIS)method and introduces the the number of joint per cubic meter. It can make the evaluation system reasonable. At last the rock mass parameters can be found by regression method. It is found that the calculated values of the cohesion and Internal friction angle are similar to the recommended values.This method is relatively easy. It can provide reference for the selection of mechanical parameters of other underground excavation engineering with similar geological conditions.
- Mechanical parameters of rock mass /
- GSI /
- High geostress /
- Jingping /
- Underground cavern

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参考文献(1)

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