水利工程中的柱状节理岩体分类及质量评价

柱状节理岩体广泛地分布于中国西南水电开发区域，其力学特性对水电工程的安全建设与运行意义重大。在前人关于柱状节理岩体的研究成果基础上，总结了国内外涉及柱状节理岩体工程问题的水利水电工程，结合白鹤滩水电站工程的不规则柱状节理岩体现场勘测和测试结果，对柱状节理岩体的分类方法进行了探讨，提出了柱状镶嵌块状结构和柱状镶嵌碎裂结构的分类方法，利用岩体质量评价的RMR法和GSI法对白鹤滩水电站两类柱状节理岩体进行了分析，对比了美国汉佛德柱状节理岩体工程案例，计算表明，RMR法和GSI法能较好的反映白鹤滩柱状节理岩体的工程力学特性，适用于类似工程的岩体质量评价。

Classification And Quality Assessment Of Irregular Columnar Jointed Basaltic Mass In Hydraulic Engineering

The columnar jointed rock mass was widely distributed in the hydropower region in southwest China.The mechanical properties of jointed rock mass had important significance for the safety of construction and operation of hydropower project. Based on the previous achievements on columnar jointed rock mass, the relevant hydraulic and hydro-power engineering projects involved in engineering problems of columnar jointed rock mass at home and abroad were listed. Taking into account the site survey and in situ tests of irregular columnar jointed basaltic mass at Baihetan hydropower station, the appropriate rock mass classification methods were discussed and the classification method of columnar mosaic blocky structure and columnar mosaic cataclastic structure were proposed. The rock mass quality assessment methods of RMR and GSI were applied to the irregular columnar jointed basaltic mass at Baihetan hydropower station. The closely jointed basalt of Basalt Waste Isolation Project in Hanford in USA was contrast with the columnar jointed basaltic mass at Baihetan hydropower station. The results show that RMR and GSI can well describe the engineering mechanical properties of irregular columnar jointed basaltic mass and can be applied to the rock mass quality assessment in similar projects.