APPLICATION OF CEMENT CHEMICAL COMPOUND GROUTING TECHNOLOGY IN JINPING I ARCH DAM FOUNDATION TREATMENT
CHEN Qiuhua1，2
(1. PowerChina Chengdu Engineering Corporation Limited，Chengdu，Sichuan 610072，China；2. High Concrete Dam Affiliation， National Hydropower Technology Research and Development Center，Chengdu，Sichuan 610072，China)
Abstract：Complex geologic conditions like fault，extrusion zone，development of deep crack，heavy unloading of rock of Jinping I arch dam have contribute the foundation treatment to be the key part of the whole project. As regular cement grouting can not solve problems like strength of weak rock，deformation，penetration completely，so cement chemical compound grouting was studied systematically combining with the development of new material technology in recent decades. The method of cement grouting firstly，then chemical compound next was proved to improve the strength and anti-permeability of weak rock effectively and greatly. Based on the various field tests，cement chemical compound grouting has successfully applied to the treatments of the weak parts of dam foundation in important area，result in significant increase of their sonic speeds，deformation modules，anti-seepage abilities，integrities and stiffness. According to the feedback analysis of dam structure during the third impoundment stage，cement chemical compound grouting has been successfully applied in the Jinping I arch dam foundation treatment，and solved one of the critical technical problems of high arch dam construction.
陈秋华1，2. 水泥化学复合灌浆技术在锦屏一级拱坝基础处理中的应用[J]. 岩石力学与工程学报, 2015, 34(S2): 4351-4359.
CHEN Qiuhua1，2. APPLICATION OF CEMENT CHEMICAL COMPOUND GROUTING TECHNOLOGY IN JINPING I ARCH DAM FOUNDATION TREATMENT. , 2015, 34(S2): 4351-4359.
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2015, Vol. 34 
