Relationship Between Properties of TwoComponent
Grout and Construction Schedule of Shield Tunnel in
Waterrich Sandy Stratum

doi:10.3973/j.issn.2096-4498.2021.S1.053

Tunnel Construction ›› 2021, Vol. 41 ›› Issue (S1): 407-.DOI: 10.3973/j.issn.2096-4498.2021.S1.053

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Relationship Between Properties of TwoComponent Grout and Construction Schedule of Shield Tunnel in Waterrich Sandy Stratum

ZHANG Long¹, HUANG Mingli², ZHANG Enyuan^{2, *}

（1. Beijing Municipal Construction Co., Ltd., Beijing 100044, China; 2. Department of Civil and Architectural Engineering, Beijing Jiaotong University, Beijing 100044, China)

Online:2021-07-30 Published:2021-08-30

Abstract

Abstract: To realize rapid construction of shield tunneling in waterrich sandy stratum, the twocomponent grout is applied to the construction of shield tunneling in waterrich sandy stratum in Suzhou. Based on the monitoring data of Suzhou metro line 5, the relationship between slurry gel time and shield driving speed is studied, the rational ranges of various parameters are selected, and a set of practical and feasible selection and mixing proportioning plan of the grout is put forward, realizing precise control of grout gel time within 100 s. The problems induced by singlecomponent grout such as segment floating, excessive settlement, and slow driving speed have been successfully avoided by twocomponent grout.

Key words: shield tunnel; waterrich sandy stratum, synchronous grouting, twocomponent grout, driving speed

CLC Number:

U 455.43

ZHANG Long, HUANG Mingli, ZHANG Enyuan. Relationship Between Properties of TwoComponent Grout and Construction Schedule of Shield Tunnel in Waterrich Sandy Stratum[J]. Tunnel Construction, 2021, 41(S1): 407-.

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Relationship Between Properties of TwoComponent Grout and Construction Schedule of Shield Tunnel in Waterrich Sandy Stratum

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