Numerical simulation of hydro-mechanical coupling for a hydraulic project pit in excavation process

NI Cai-sheng; BAI Shi-wei; HAN Chang-rui

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Numerical simulation of hydro-mechanical coupling for a hydraulic project pit in excavation process

更新时间：2026-06-25

- Numerical simulation of hydro-mechanical coupling for a hydraulic project pit in excavation process
- Vol. 29, Issue S1, (2008)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所，岩土力学与工程国家重点实验室,武汉,430071
  2. 广东省水利厅,广州,510150
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV139.11
- Online First：15 April 2016，
  
  Published：2008
- 稿件说明：
移动端阅览
NI Cai-sheng, BAI Shi-wei, HAN Chang-rui. Numerical simulation of hydro-mechanical coupling for a hydraulic project pit in excavation process[J]. 2008, 29(S1).
DOI：

NI Cai-sheng, BAI Shi-wei, HAN Chang-rui. Numerical simulation of hydro-mechanical coupling for a hydraulic project pit in excavation process[J]. 2008, 29(S1). DOI：

摘要

岩土工程中存在多种耦合作用，在水利水电工程中，渗流场与应力场的耦合是最重要的。以某水利枢纽厂房基坑开挖为工程背景，比奥固结理论为理论基础，莫尔-库仑准则为土体屈服判据，对基坑开挖过程中渗流耦合进行了数值模拟。计算结果显示：回填后的应力略大于开挖过程中的应力，沉井附近出现一定程度的应力集中。回填前后塑性区变化不大且范围较小，因而土体的屈服破坏不是该工程的重点。由于土体渗透系数大，厂房区地下水位高，基坑开挖过程中渗水量较大，回填后沉井及基坑底部防渗底板的防渗效果显著，因而在基坑开挖过程中防渗排水是该工程的重点问题。

Abstract

There are many coupling effects in rock and soil engineering; seepage field and stress coupling is important in the water resources and hydropower engineering. Taking a hydraulic project foundation pit excavation as engineering background

Biot’s consolidation theory as theoretical basis

and Mohr-Coulomb’s principle as soil yield criterion

hydro-mechanical coupling of foundation pit is simulated in the process of excavation. The results indicate that the stress of backfill is larger than that of excavation

and there is a certain degree stress concentration near the open caisson. There is little yield region before and after backfill; so yield failure of soil is not a major problem in the engineering. Because of large coefficient of permeability of soil and high level of groundwater in the region of powerhouse

seepage discharge is very large in the process of excavation. Open caisson and impervious soleplate laid on the floor of the foundation pit have obvious effect on reducing seepage discharge. In conclusion

permeability-reducing and drainage are the key problem in the process of excavation of the engineering.

关键词

Keywords

references

Views

1615

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Coupling mechanism of seepage and heat transfer in rock fracture based on physics-informed neural networks

Influence of construction gap on the force of steel lining in compressed air storage cavern

Stability and failure mode analysis of tunnel face in composite ground with upper sand and lower clay layers

Characterization method for the three-dimensional soil cutting failure surface based on damage energy dissipation

Pullout simulation on fully grouted rock bolts based on residual shear strength

Related Author

WANG Zhi-liang1

XIAO Zhi-huan1

SHEN Lin-fang1

LI Shao-Jun2

ZHANG Gui-min

SUN Wen-qing

ZHU Ze-fan

SU Yong-kang

Related Institution

Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology

State Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

School of Mechanics and Civil Engineering, China University of Mining and Technology

State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology

School of Highway, Chang’an University

AI问答

⁰