ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2012, Vol. 32 ›› Issue (4): 448-453.DOI: 10.3973/j.issn.1672-741X.2012.04.003
• wenzhang • Previous Articles Next Articles
HE Sijin
Received:
Revised:
Online:
Published:
Abstract: When EPB shield bores in loess strata, the muck conveying is difficult, the pressure in the excavation chamber is difficult to be established and the temperature of the cutting tools is very high. In this case, ground conditioning by grounding conditioning agents, such as bentonite, is needed so as to ensure successful shield boring. Bentonite slurry optimization test and foam optimization test are made by means of orthogonal test. The optimum concentration of the bentonite conditioning agent and bentonite slurry suitable for loess strata is obtained by means of bentonite slurry optimization test; the relationship between the foam performance and the optimum concentration of the foaming solution is obtained by means of foam optimization test. The paper can provide reference for similar projects in the future.
Key words: shieldbored tunnel, loess, bentonite, ground conditioning, foaming agent, slurry mixing ratio
HE Sijin. Study on Grounding Conditioning by Bentonite Slurry in Shield Tunneling in Loess Strata[J]. Tunnel Construction, 2012, 32(4): 448-453.
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://www.suidaojs.com/EN/10.3973/j.issn.1672-741X.2012.04.003
http://www.suidaojs.com/EN/Y2012/V32/I4/448
Experimental Effect Prediction of Ground Conditioning of Water rich Sandy Stratum Based on BP Neural Network