土压式盾构施工中地下水出渗机理研究

›› 2004, Vol. 25 ›› Issue (10): 1632-1636.

土压式盾构施工中地下水出渗机理研究

秦建设，朱伟

河海大学岩土工程研究所，江苏南京 210098

收稿日期:2003-08-04 出版日期:2004-10-11 发布日期:2014-07-25
作者简介:秦建设，男，1973年生，博士生，主要从事隧道盾构施工技术研究

Study on flowing through screw conveyor during excavation with EPB shieldStudy on flowing through screw conveyor during excavation with EPB shield

QIN Jian-she , ZHU Wei

Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China

Received:2003-08-04 Online:2004-10-11 Published:2014-07-25

摘要/Abstract

摘要： 针对土压平衡式盾构机在高水头强透水地层掘进工程中，排土器出口易出现地下水渗出的现象进行了理论研究。通过建立地下水在盾构机内的渗流计算模型，提出了判别地下水渗出发生与否及其出渗量大小的方法，阐明了盾构施工中发生地下水出渗的机理。利用这一模型计算了出渗发生时地下水流失情况，对影响出渗发生的各相关参数进行了分析，为施工中克服和避免这一现象提供了理论依据。

关键词: 土压平衡式EPS盾构, 排土器出口地下水出渗, 渗流计算

Abstract: When earth-pressure balance (EPB) shield is used in high permeability ground as well as high groundwater pressure, groundwater will flows through screw conveyor (Flowwing), this will lead the loss of great quantity of groundwater and even the halt of excavation. Based on the steady-flow seepage theory and shield driving principle, a method for judge Flowing is provided, and a model for study the seepage of groundwater in chamber and screw conveyor is built to explain the mechanism of Flowing. With the model, the parameters such as soil condition, shield geometry, excavation instruction which relate with Flowing are analyzed and the results give some useful conclusions and suggestions to predict and avoid flowing. The model can also be used to calculate the discharge of groundwater.

Key words: earth-pressure balance (FPB) shield, flowing through screw conveyor, seepage calculation

中图分类号:

O357.3

秦建设，朱伟. 土压式盾构施工中地下水出渗机理研究[J]. , 2004, 25(10): 1632-1636.

QIN Jian-she , ZHU Wei. Study on flowing through screw conveyor during excavation with EPB shieldStudy on flowing through screw conveyor during excavation with EPB shield[J]. , 2004, 25(10): 1632-1636.

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