• 责任者：Qiao Jinli (School of Mechanical Engineering ; Tianjin University ; Tianjin 300072 ; China) ; Zhang Yitong
• 刊名：Hydrogeology and Engineering Geology
• 出版年：2009
• 卷期：36(1)
• 关键词：隧道 ; tunnels ; 盾构法 ; shield methods
• 页码：p.80-85
• 图表：9 illus., 5 tables, 20 refs.
• 分类号：1702
• issnNo：ISSN1000-3665
• isbnNo：CN11-2202/P

Through engineering example and using the software integration system of VB6.0 and FLAC3D, shield tunnel excavation face stability is analyzed with and without the consideration of seepage effect of water. According to the stability theory, the limit face pressure is that when face pressure is changed very small, displacement of the center at tunnel face increases large suddenly. And the changes of the support pressure, the stress field, the displacement field and the plastic zone are obtained under two kinds of conditions. The results show that the limit support pressure of face is equal to the total of the effective pressure and seepage force, the support pressure is larger with the consideration of seepage effect than without the consideration of seepage effect, the seepage force is the main of the limit support pressure.