2010•Shuiwen dizhi gongcheng dizhiRequires access

Seepage-stress coupling analysis of river-crossing tunnel excavating

Xiaoguang Jin

Abstract

Stress redistribution of surrounding rock induced by tunnel excavation and seepage affects stability of tunnel.Tunnel excavation and seepage field boundary variation were closely connected.Appropriate 3D FEM was established according to seepage field boundary and hydromechanical coupling effect of a planned tunnel excavating was analysed.Seepage-stress coupling equation was established in steady state,pore pressure varying regularity with tunnel excavation and hydromechanical coupling affects to displacement and stress of surrounding rock as well as stress of supports was analyzed.Results of numerical computation show that seepage speed and displacement of rock formation with large permeability coefficient were effected greatly by seepage.Displacement and stress of surrounding rock as well as stress of supports have a rather large increase by seepage influence.Design and construction shou1d consider seepage flow effect.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Geotechnical engineering, Excavation, Geology, Stress field, Stress (linguistics), Displacement (psychology), Coupling (piping), Permeability (electromagnetism)