Study on Chemical Grout Permeation Mechanism Based on Experiment of Mud and Sand Medium

Abstract:

In order to fully mechanized caving face bypass collapse column on safety and high efficiency, this paper do similarity simulation experiment, and obtained experimental result that main type of seepage flow includes finger seepage and surface seepage, the grout enter into around pore and occupy it’s space in grouting pressure. Moisture content of mud and sand medium is lower, grouting process can be regarded as single-phase permeability, analysis on the relation between grouting diffusion radius and other parameters. may know that grouting diffusion radius is increased with the increase of permeability coefficient and grouting pressure and grouting time, and is decreased with the increase of Porosity and grout viscosity.

• Periodical: Advanced Materials Research (Volumes 608-609)
• Pages: 1809-1813
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.608-609.1809
• Online since: December 2012
• Authors: Duo Tian, Hao Yu Shi, En Jun Fu
• Keywords: Grouting Experiment, Mud and Sand Medium, Permeation Mechanism, Pore

References

[1] Sui Wanghua, Dong Qinghong, Cai Guangtao etc.Mining inrush of sand mechanism and prevention [M]. Beijing: geological publishing house, 2008,In Chinese

[2] Su Bao-yu Zhang Wenjie,Sheng Jinchang etc. Study of permeability in single fracture under effects of coupled fluid flow and chemical dissolution [J]. Rock and Soil Mechanics. 2010.11,In Chinese

[3] Guo Miwen. Experimental Investigation of Propagation Mecha-nism of Chemical Grout Injection into Porous Mediaunder a High Pressure and Closed Environment [D]. China University of Mining & Technology. 2010.12,In Chinese

[4] Zhang Wenjie,Zhou Chuangbing,Li Junping,et al. Research progress of experimental study on seepagecharacteristic of fractured rock masses[J].Rock and SoilMechanics,2005,26(9):1517－1524. ,In Chinese

[5] Feng Zhiqiang. Material development and research of osmosis and diffusion on chemical grouting for extraordinary cracked coal and rockmass [D]. China Coal Research Institute. 2007,In Chinese

[6] Shimada, H, Sasaoka, T, Kubota, S．The Application of Flyash Cement in Mining Backfill Material．Australasian Institute of Mining and Metallurgy Publication series, 2003(1): 199~204

[7] Ma Xiurong; Hao Ze. Theoretical Commentary about Grouting in Rock Mass [J]. Non-ferrous Mining and Metallurgy, 2001(2) ,In Chinese

[8] Zhai Yunfang; Seepage Mechanics [M]. petroleum industry press. 2009.8,In Chinese

[9] Yu Huaqian. Fluid Mechanics Short Course [M]. Tianjin University press. 2009.6,In Chinese

[10] Xie Xinghua, Su Baoyu. A review of fracture rock hydraulic fracturing research [J]. Rock and Soil Mechanics, 2004(2) ,In Chinese

[11] Wang Haiming; Wang Enzhi; Sun Yi. Constitutive Relations of Unsaturated Seepage Flow in Fractured Rock Masses. Chinese Journal of Rock Mechanics and Engineering. 2004(2) ,In Chinese