New Method to Evaluate Antiwashout Performance of Grout for Preventing Water-Inrush Disasters

doi:10.1061/(ASCE)GM.1943-5622.0001587

	New Method to Evaluate Antiwashout Performance of Grout for Preventing Water-Inrush Disasters
	Yuan, Jingqiang; Chen, Weizhong; Tan, Xianjun; Yang, Diansen; Zhang, Qingyan
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2020-02-01
卷号	20 期号:2 页码:6
关键词	Antiwashout performance Cement-sodium silicate grout Polyurethane grout Grout retention ratio Water-inrush disaster
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001587
英文摘要	Grouting is frequently used to prevent water-inrush disasters in tunnels and underground engineering. However, complex groundwater environment can significantly influence the grouting effect, especially the antiwashout performance. To accurately evaluate the antiwashout performance of grouting materials, a new method is proposed to design specific measurement devices and measurement procedures. This new method allows direct simulation of the injection of grout into water with different flow velocities. Thus, the antiwashout performance of grout under the scouring and diluting action of flowing water can be evaluated quantitatively. The grout retention ratio (GRR) is defined to quantitatively determine the antiwashout performance of grout. Taking widely used cement-sodium silicate (C-S) grout and polyurethane grout as test samples, a series of tests with different mixing ratios and water flow velocity conditions was carried out. The feasibility of the new method was evaluated in these tests and the influences of the grout mixing ratio and water flow velocity on the GRR were discussed. By analyzing the experimental data, a polynomial regression model for C-S grout was derived to provide guidance for optimizing its antiwashout performance. Compared with C-S grout, polyurethane grout has much better antiwashout performance at higher water flow velocity, indicating its advantage in controlling the flow rate of water and preventing water-inrush disasters.
资助项目	National Natural Science Foundation of China[51509246] ; Hubei Provincial Natural Science Foundation of China[2018CFA012] ; Hubei Key Laboratory of Roadway Bridge and Structure Engineering (Wuhan University of Technology)[DQZDJJ201701]
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000502794700002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27581]
专题	中科院武汉岩土力学所
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Jingqiang,Chen, Weizhong,Tan, Xianjun,et al. New Method to Evaluate Antiwashout Performance of Grout for Preventing Water-Inrush Disasters[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2020,20(2):6.
APA	Yuan, Jingqiang,Chen, Weizhong,Tan, Xianjun,Yang, Diansen,&Zhang, Qingyan.(2020).New Method to Evaluate Antiwashout Performance of Grout for Preventing Water-Inrush Disasters.INTERNATIONAL JOURNAL OF GEOMECHANICS,20(2),6.
MLA	Yuan, Jingqiang,et al."New Method to Evaluate Antiwashout Performance of Grout for Preventing Water-Inrush Disasters".INTERNATIONAL JOURNAL OF GEOMECHANICS 20.2(2020):6.