Practice Study on Grouting Treatment Engineering of Broken Rock Mass

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Huhongxing^1 ; Changfu, Xu^1 ; Fuqiang, Zhang^1 ; Jingyu, Feng^1 ; Juwang, Song^1

China Railway Third Bureau Group Co. Ltd., Taiyuan, SHANXI

030000, China^1

关键词: Curtain grouting;    Dynamic monitoring;    Engineering tests;    Fractured rock mass;    Grouting materials;    Grouting parameters;    Surrounding environment;    Treatment engineering;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/3/032037/pdf
DOI  :  10.1088/1755-1315/189/3/032037

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The fractured rock mass is the unfavorable geology often exposed during the construction of the subway. Combined with the problem of seepage water in the side wall of the Xiangjiang Road station of Qingdao Metro, it explores effective means to control the fractured rock mass. Through the engineering hydrogeology and the surrounding environment analysis of the foundation pit, the ground curtain grouting scheme of the whole station is adopted to block the groundwater outside the pit of the station. The grouting borehole design, grouting parameter design, grouting dynamic monitoring control, etc. are determined in turn, wherein the grouting material adopts 800 mesh ultra-fine cement, fully considering the crack opening problem. The grouting method adopts forward section grouting, which fully considers the problem of poor integrity of fractured rock mass. Finally, the effectiveness of the grouting method is verified by engineering test section. The research results show that the super-fine cement ground surface curtain grouting method can better solve the problem of seepage water in fractured rock, and can provide reference for similar projects.