Experimental study on environment friendly slurry for slurry shield tunnelling

被引：2
|
作者：
Zhang Z. [1 ,2 ]
Hu X. [1 ,2 ]
Huang X. [1 ,2 ]
机构：
[1] Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University
[2] Department of Geotechnical Engineering, Tongji University
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2010年 / 38卷 / 11期
关键词：
Effective slurry support pressure; Meso-structure; Slurry; Slurry-type shield; True triaxial test;
D O I：
10.3969/j.issn.0253-374x.2010.11.003
中图分类号：
学科分类号：
摘要：
Based on water, clay, starch and minor solid alkali, an environment friendly slurry for slurry shields driving in sandy soils was invented by using the gelatinization property of starch. The true triaxial test coupled SteREO Discovery (V12) were performed to explore the mechanical property of an environment friendly slurry under the complicated stress state. And the meso-structure of a tight membrane and filter cake even in sandy soils were also observed. Experimental results indicate that the environment friendly slurry is characterized by short formation time, compact structure, strong infiltration capacity and wide area with respect to effective support pressure of the slurry. Furthermore, under the drained or undrained condition, the permeability of slurries has great effect on the strength and deformation of sandy soil, and the effective support pressure of slurries has an upper and lower limit value.
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页码：1574 / 1578
页数：4
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