Experimental Study of Tunnels in Squeezing Ground Conditions

Arora, Ketan; Gutierrez, Marte; Hedayat, Ahmadreza

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Experimental Study of Tunnels in Squeezing Ground Conditions

2020-10-01
By Arora, Ketan ; Gutierrez, Marte ; Hedayat, Ahmadreza

File Language:

English

Details

Creators:

Arora, Ketan ; Gutierrez, Marte ; Hedayat, Ahmadreza
Corporate Creators:

Colorado School of Mines ; University Transportation Center for Underground Transportation Infrastructure ; California State University, Los Angeles
Corporate Contributors:

United States. Department of Transportation. Office of the Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program
Subject/TRT Terms:
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

University Transportation Center for Underground Transportation Infrastructure (UTC)
Abstract:

Squeezing rock conditions have been causing significant risks in the construction of tunnels in rock formations, especially at great depth and in weak and/or weathered rock masses. The tunnel excavation may induce a stress change with considerable deviatoric stress that can cause squeezing ground behavior. The mechanism of squeezing failure of tunnels is not clearly understood yet, and the goal of this research project is to understand better the causes leading to squeezing ground phenomena. The objectives of this research were to identify the major causes of squeezing in soft rock, quantifying the squeezing amounts and develop experimentally verified squeezing criterion for broader application to tunnels. To achieve the research objectives, a series of novel true-triaxial compression experiments with simultaneous tunneling in rock were conducted.
Format:

PDF
Funding:

69A355174711
Download URL:

https://rosap.ntl.bts.gov/view/dot/59786/dot_59786_DS1.pdf
File Type:

[PDF - 5.09 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha-512:877661e0d0327e049e52e335007e6ea48b143e4168a3df07c19814cfb29ff76efedab14285f6e8866ddd0b9f541e204a3094e18ab8726e1e90f72734a2ed729d

File Language:

English

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