Countermeasures for Collapse of Taoshuping Tunnel Crossing Waterrich Finesand Strata

ZHANG Xuewen

doi:10.3973/j.issn.2096-4498.2018.02.021

Tunnel Construction >

2018 , Vol. 38 >Issue 2: 308 - 315

DOI: https://doi.org/10.3973/j.issn.2096-4498.2018.02.021

Countermeasures for Collapse of Taoshuping Tunnel Crossing Waterrich Finesand Strata

ZHANG Xuewen

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(LanzhouChongqing Railway Project Headquarters of China Railway Construction Bridge Engineering Bureau Group Co., Ltd., Lanzhou 730070, Gansu, China)

Received date: 2017-06-19

Revised date: 2017-11-13

Online published: 2018-03-19

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Abstract

Taoshuping tunnel, a Grade Ⅰ doubleline railway tunnel, crosses tertiary waterrich finesand strata. As a result of the poor diagenesis of finesand strata and bad selfstability when mixing water, the tunnel construction is difficult and the easily encountering of collapse is difficult to treat. In order to deal with the abovementioned problems and guarantee rapid construction of the Taoshuping # 3 Tunnel, the technology of "vacuum dewatering+doublelayer large pipe roof+small pipe roof+doubleside drift method" is discussed and summarized to provide reference for similar projects in the future.

Key words： LanzhouChongqing Railway; Taoshuping Tunnel; waterrich finesand strata; collapse treatment; construction technology; doublelayer large pipe roof; doubleside drift method

Cite this article

ZHANG Xuewen . Countermeasures for Collapse of Taoshuping Tunnel Crossing Waterrich Finesand Strata[J]. Tunnel Construction, 2018 , 38(2) : 308 -315 . DOI: 10.3973/j.issn.2096-4498.2018.02.021

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