Simulated Grouting Diffusion Test in a Fault Medium by Single Injection Pipe

被引:0
|
作者
Zhang, Xiao [1 ]
Yu, Haiyang
Li, Peng
Yu, Wensheng [2 ]
Liu, Jianguo
机构
[1] Shandong Univ, Geotechn & Struct Engn Res Ctr, Jinan 250061, Shandong, Peoples R China
[2] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410004, Peoples R China
来源
IN SITU AND LABORATORY TEST METHODS FOR SITE CHARACTERIZATION, DESIGN, AND QUALITY CONTROL | 2016年 / 265期
关键词
MECHANISM;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In order to analyze the diffusion mechanism of single grouting in fault, a large sized test device was developed to conduct simulated grouting diffusion test in fault medium by single injection pipe. At the same time, the real-time key parameters including injection pressure, injection rate, soil stress, seepage stress, and effective stress were acquired. In addition, the fault medium was excavated by nine sections, and the three-dimensional diffusion form of slurry was therefore sketched. It can be concluded that the soil stress, seepage stress and effective stress increase continuously during grouting while decrease gradually when grouting is stopped. The volume of injected cement and waterglass slurry is 7.3% of the volume of fault medium. The the consolidation body of grout with the maximum thickness of 133 mm is in the section of the -50 mm. Based on test conclusions, four suggestions are proposed for the design and application of grouting engineering.
引用
收藏
页码:130 / 138
页数:9
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