锦屏一级水电站厂区松弛围岩无盖重固结灌浆施工  

Construction of Non-cover-weight Consolidation Grouting of Loose Surrounding Rock in Jinping Ⅰ Hydropower Station

作　　者：黄辉 HUANG Hui(Yalong River Hydropower Development Company,Ltd.Chengdu 610051,China)

机构地区：[1]雅砻江流域水电开发有限公司

出　　处：《云南水力发电》2019年第5期120-122,共3页Yunnan Water Power

摘　　要：锦屏一级水电站地下厂区地质条件十分复杂,地应力水平较高,岩体强度相对较低,结构性断层发育,局部有煌斑岩脉和节理发育。受复杂地质情况影响,厂房下游拱腰部位出现喷砼层变形开裂掉块,岩体变形破坏现象。为了抑制厂房变形,确保围岩稳定安全,设计提出了针对性加固措施,主要介绍了松弛围岩无盖重条件下固结灌浆施工技术。The geological conditions of underground powerhouse in Jinping I Hydropower Station are very complicated, with high in-situ stress level, relatively low rock mass strength, developed structural faults, and developed lamprophyre vein and joints locally. Due to the influence of complex geological conditions, the shotcrete layer at the downstream of the powerhouse is deformed, cracked, and the rock mass is deformed and damaged. In order to restrain the deformation of the plant and ensure the stability and safety of the surrounding rock, the aim of the reinforcement measures is put forward. This paper mainly introduces the construction technology of consolidation grouting under the condition of no-cover weight.

关 键 词：松弛围岩 无盖重 固结灌浆 施工技术 

分 类 号：TV543.5[水利工程—水利水电工程]