金口河断层注浆扩散数值模拟研究  

NUMERICAL SIMULATION OF GROUTING DIFFUSION IN JINKOUHE FAULT

作　　者：巩贵彦 林金洪 周会信 张俊林 郭朋瑜 王磊[2] GONG Gui-yan;LIN Jin-hong;ZHOU Hui-xin;ZHANG Jun-lin;GUO Peng-yu;WANG Lei(Huadong Engineering(Fujian)Corporation Limited,Fuzhou 350003,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]华东勘测设计院(福建)有限公司,福州350003 [2]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

出　　处：《地质灾害与环境保护》2022年第2期43-49,共7页Journal of Geological Hazards and Environment Preservation

基　　金：国家自然科学基金项目(41977237);四川省科技厅基金项目(2018JY0471)。

摘　　要：以沙坪一级电站左岸金口河断层为研究对象,根据实测资料,建立断层各渗流带注浆扩散数值模型,利用FLAC^(3D)内置Fish语言实现水泥浆液的粘度时变特性模拟,研究注浆参数对注浆效果的影响规律。结果表明,注浆压力对扩散半径的影响呈“阶梯型”,注浆压力越大,扩散半径越大;水灰比对注浆有效扩散半径的影响是有限的;渗透系数与有效扩散半径呈正相关;孔隙率与扩散半径均呈负相关。Taking the Jinkouhe fault on the left bank of shaping I power station as the research object,according to the measured data,the numerical model of grouting diffusion in each seepage zone of the fault is established,and the viscosity time-varying characteristic of cement paste is simulated by using FLAC^(3D) built-in fish language,and the influence of grouting parameters on grouting effect is studied.The results show that the effect of grouting pressure on the diffusion radius is "ladder",the greater the grouting pressure is,the larger the diffusion radius is,the effect of water-cement ratio on the effective diffusion radius is limited,and the permeability coefficient is positively correlated with the effective diffusion radius.there is a negative correlation between porosity and diffusion radius.

关 键 词：金口河断层 注浆扩散 注浆参数 数值模拟 

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