四川水力发电2026，Vol.45Issue(1)：43-47,5.DOI:10.20196/j.cnki.scslfd.20260109
巴拉水电站引水隧洞围岩变形参数研究
Study on surrounding rock deformation parameters of the headrace tunnel in Bala Hydropower Project
邓波 1黄鹏 1张长平 1李秋娴 1曹阳1
作者信息
- 1. 四川省清源工程咨询有限公司,四川 成都 610072
- 折叠
摘要
Abstract
To accurately determine the surrounding rock deformation parameters of the extra-large cross-section headrace tunnel of the Bala Hydropower Project,ensure project safety,and optimize the design scheme,this study integrated multiple technical methods such as rock physical and mechanical property tests,in-situ rock mass deformation tests,and sonic wave tests,in combination with the specific geological conditions of the pro-ject area.Through systematic analysis of the test data,a quantitative relationship between the sonic wave ve-locity and deformation modulus of the rock mass was established,and then key parameters such as the deform-ation modulus and unit elastic resistance coefficient of different types of surrounding rocks were systematically determined.The research results show that:the poorer the quality of the surrounding rock,the larger the thickness of the loosened zone,and the sonic wave velocity and deformation modulus of the rock mass decrease significantly;the established sonic wave velocity-modulus relationship has a significant correlation(R=0.90),which verifies its reliability.This study finally proposes a set of recommended values for surrounding rock pa-rameters applicable to this project,providing a key scientific basis for the accurate evaluation of the surrounding rock stability of the headrace tunnel and the optimal design of the support structure,and has important refer-ence value for similar projects.关键词
引水隧洞/围岩稳定性/变形模量/声波测试/单位弹抗系数Key words
headrace tunnel/surrounding rock stability/deformation modulus/sonic wave test/unit elastic resist-ance coefficient分类
建筑与水利引用本文复制引用
邓波,黄鹏,张长平,李秋娴,曹阳..巴拉水电站引水隧洞围岩变形参数研究[J].四川水力发电,2026,45(1):43-47,5.
