修正水电HC法在地下厂房洞室围岩分级中的应用研究  

APPLICATION OF MODIFIED HYDRO HC METHOD IN SURROUNDING ROCK CLASSIFICATION OF UNDERGROUND POWERHOUSE CAVERN

作　　者：唐志强 张瑞超 王磊[1] 冯文凯[1] 吉锋[1] TANG Zhi-qiang;ZHANG Rui-chao;WANG Lei;FENG Wen-kai;JI Feng(State Key Laboratory of Geo-hazard Prevention and Geo-environment Protection,C hengdu University of Technology,Chengdu 610059,China;PowerChina ZhongNan Engineering Corporation Limited,Changsha 410014,China)

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]中国电建集团中南勘察设计研究院有限公司,长沙410014

出　　处：《地质灾害与环境保护》2022年第2期86-91,共6页Journal of Geological Hazards and Environment Preservation

摘　　要：水电HC法的岩体完整程度以完整性系数K_(v)为定量指标,但完整性系数K_(v)值的测试难度较高,不利于现场测试特别是施工阶段的频繁测定,且受测试环境及岩体风化状态的影响,测试结果的准确性难以得到保证。岩体体积节理数J_(v)是对节理密度的三维统计,能较好地反映节理密度,根据《工程岩体分级标准》中的间距法,可以在现场快速准确的获得。目前国内外常用的几种围岩分级方法中,其评价指标都与岩体体积节理数J_(v)存在密切的联系,通过引入岩体体积节理数J_(v)值,并结合完整性系数K_(v)值,综合表征岩体的完整性程度,减小完整性系数K_(v)值的误差给围岩分级结果带来的影响,从而获得了符合实际情况的修正水电HC围岩分级方法,并成功应用到了河南五岳抽水蓄能电站地下厂房围岩分级中。相关研究方法可以为类似工程围岩分级提供参考。The rock mass integrity of hydropower HC method takes the integrity coefficient K_(v) as the quantitative index,but the test of the integrity coefficient K_(v) is difficult,which is not conducive to the on-site test,especially the frequent measurement in the construction stage,and the accuracy of the test results is difficult to be guaranteed due to the influence of the test environment and rock mass weathering state.The volume joint number J_(v) of rock mass is a three-dimensional statistics of joint density,which can better reflect the joint density.According to the spacing method in the engineering rock mass classification standard,it can be obtained quickly and accurately on site.Among several commonly used surrounding rock classification methods at home and abroad,the evaluation indexes are closely related to the volume joint number J_(v) of rock mass.By introducing the volume joint number J_(v) of rock mass and combining the integrity coefficient K_(v) value,the integrity degree of rock mass is comprehensively characterized,so as to reduce the impact of the error of integrity coefficient K_(v)value on the surrounding rock classification results,Thus,the modified hydropower HC surrounding rock classification method in line with the actual situation is obtained and successfully applied to the surrounding rock classification of the underground powerhouse of Wuyue pumped storage power station in Henan Province.Relevant research methods can provide reference for surrounding rock classification of similar projects.

关 键 词：抽水蓄能电站 地下厂房洞室 岩体体积节理数 HC法 分级方法修正 

分 类 号：P642[天文地球—工程地质学] TV74[天文地球—地质矿产勘探] TU457[天文地球—地质学]