基于Hoek-Brown方法的强度参数取值及水电工程应用与案例分析  

Strength Parameters of Rock Mass Based on Hoek-Brown Method and Application in Hydropower Engineering

作　　者：郭维祥[1] 郑克勋[1] 胡政[1] 朱焕春 李振 朱永生 

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵阳550081 [2]依泰斯卡(武汉)咨询有限公司,武汉430205

出　　处：《长江科学院院报》2017年第4期71-77,82,共8页Journal of Changjiang River Scientific Research Institute

摘　　要：西部水电工程普遍处于高应力和复杂地质环境下,强度参数取值受到岩性多样化、围压效应等因素的影响,引入和使用Hoek-Brown参数取值方法,有助于更好地服务于水电工程实践。对比了Hoek-Brown经验取值方法与水电经验取值方法,介绍了Hoek-Brown经验取值方法中与影响因素分别相关的岩性指标、地质强度指标独立参数的具体取值依据与实现过程,并阐述了与西部水电工程密切相关的实际应用方法,分别进行了锦屏二级水电站、锦屏一级水电站应用验证,证明了Hoek-Brown经验取值方法在西部水电工程中的高适应能力。Strength parameters are affected by lithology diversity,confining stress and other factors under high stress and complicated geological condition of hydropower engineering in western China. Hoek-Brown method to determining parameter values is helpful to the hydropower engineering practice. Hoek-Brown empirical method is compared with hydropower empirical method,and the specific basis and realization process of independent parameters such as lithology indicator and geological strength index which are related to the factors in Hoek-Brown method are introduced.Moreover,practical methods closely related to the hydropower engineering in western China are expounded and are applied to JinpingⅡ-stage andⅠ-stage hydropower stations for validation.It is proved that Hoek-Brown empirical method is of high adaptability in hydropower engineering in western China.

关 键 词：岩体 高应力 Hoek-Brown方法 强度参数 岩性指标 地质强度指标 锦屏一级水电站 锦屏二级水电站 

分 类 号：TV223[水利工程—水工结构工程]