Deformation Mechanisms and Classification of Soft Rock Mass of Tunnels in High Ground Stress Zones: Case Study on Tunnels onLanzhouChongqing Railway

Tunnel Construction ›› 2011, Vol. 31 ›› Issue (3): 289-293.

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Deformation Mechanisms and Classification of Soft Rock Mass of Tunnels in High Ground Stress Zones: Case Study on Tunnels onLanzhouChongqing Railway

WANG Jianjun

Geology and Subgrade Department, China Railway First Survey and Design Institute Group Ltd., Xi’an 710043, China

Received:2011-03-22 Revised:2011-04-06 Online:2011-06-20 Published:2011-07-08

Abstract

Abstract:

Deformation (mainly caused by geology conditions) control factors are summarized, deformation mechanism of soft rock is discussed, and soft rocks in high ground stress zones are classified, with the large deformation characteristics of soft rock tunnel in high ground stress zones on LanzhouChongqing railway as an example, so as to objectively estimate the design and surrounding rock classification of tunnels in high ground stress geology conditions.

Key words: soft rock tunnel, LanzhouChongqing railway, high ground stress, deformation control factor, deformation mechanism, soft rock classification

WANG Jian-Jun. Deformation Mechanisms and Classification of Soft Rock Mass of Tunnels in High Ground Stress Zones: Case Study on Tunnels onLanzhouChongqing Railway[J]. Tunnel Construction, 2011, 31(3): 289-293.

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Deformation Mechanisms and Classification of Soft Rock Mass of Tunnels in High Ground Stress Zones: Case Study on Tunnels onLanzhouChongqing Railway

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