修正Z系统在坝区岩体质量分级中的应用

Application of Modified Z-system in Rock Mass Quality Classification in Dam Region

在综合分析国内外几种常用的坝区岩体质量分级体系的基础上,以大量现场地质勘察、弹性波检测和室内外岩石力学试验为依据,提出修正Z系统,并对相关参数的取值作了初步分析。结合金沙江某水电站坝区岩体质量分级实例,以地质因素为主导因素,为该分级方法参数之间的换算提供了物质基础。研究结果表明:修正Z系统对水电站坝区复杂工程岩体质量分级比较适合,具有较为广宽的研究空间和应用前景。

Based on analyzing synthetically several representative domestic and international rock mass quality classification systems in dam region, and relying on massive situ-in geological investigation, elastic wave test and rock mechanical situ-in experiments and indoor test,modified Z-system was put forward. It also did some primary research on how evaluate the correlative parameters. Coupled with the example of rock mass quality classification of one of Jinsha River hydropower station,the geological information was make as dominant factor. It provides practical basement for the conversion between all kinds of parameters of this classification system, Research result indicates that modified Z system is fit for complicated engineering rock mass quality classification in dam region comparatively. So it possesses wide research space and engineering outlook relatively.