Title: Calculation of the Vertical Strata Load of Utility Tunnel Crossing Ground Fissure Zone

Abstract

A ground fissure is a geological disaster in which the vertical dislocation of strata causes surface rupture. Ground fissures can cause extreme harm to the surface and underground buildings. Ground fissure activity can result in different settlement on the two sides of the strata, which will generate additional stress (pressure) that differs from the stress of the general stratum on underground structures across the ground fissure zone. It is essential to assess the effective stress of strata in the design of underground engineering structures across a ground fissure zone. The Xi’an ground fissure through a utility tunnel was focus of the research, and a physical model and data for oblique crossing of the 45° ground fissure were analyzed. A model of the utility tunnel structure was established, including the surrounding soil load as an active ground fissure environment. This model was used to calculate the vertical formation pressure of the overlying soil on the utility tunnel. A method to calculate the overlying load on the utility tunnel caused by ground fissure activity was proposed and compared with the calculation based on the A. Marston principle. The results showed that the ground fissure load calculation method based on the strata-holding effectmore » can effectively calculate the earth pressure of the surrounding soil layer of the utility tunnel in the cross-ground fissure section. The results of this work provide guidance and reference value for the design of a utility tunnel in an area with the potential for a ground fissure.« less

Authors:

Zhang, Dan ^[1]; Hu, Zhiping  ^[2];

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Lu, Ganggang ^[1]; Wang, Rui ^[1]; Ren, Xiang ^[1]; Yi, ed., Junyan

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+ Show Author Affiliations

1. School of Civil Engineering, Chang’an University, Xi’an 710061, China
2. School of Civil Engineering, Chang’an University, Xi’an 710061, China, Institute of Underground Structure and Engineering, Chang’an University, Xi’an 710061, China

Publication Date:

2020-12-08

Sponsoring Org.:

USDOE Office of Electricity (OE), Advanced Grid Research & Development. Power Systems Engineering Research

OSTI Identifier:

1734815

Grant/Contract Number:  

2017ZDXM-SF–095

Resource Type:

Published Article

Journal Name:

Shock and Vibration

Additional Journal Information:

Journal Name: Shock and Vibration Journal Volume: 2020; Journal ID: ISSN 1070-9622

Publisher:

Hindawi Publishing Corporation

Country of Publication:

Egypt

Language:

English