Application of Youngs method in tracking the moving interface of expansible grout

LI Xiao-long; ZHANG Tian-tian; WANG Fu-ming; ZHONG Yan-hui; ZHANG Bei

doi:10.16285/j.rsm.2017.12.013

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Application of Youngs method in tracking the moving interface of expansible grout

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- Application of Youngs method in tracking the moving interface of expansible grout
- Vol. 38, Issue 12, Pages: 3491-3497(2017)
- 作者机构：
  
  1. 郑州大学水利与环境学院,河南,郑州,450001
  2. 郑州大学教育部基础工程设施安全防护理论与技术创新团队,河南,郑州,450001
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.12.013
  CLC： TU472.5
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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LI Xiao-long, ZHANG Tian-tian, WANG Fu-ming, et al. Application of Youngs method in tracking the moving interface of expansible grout[J]. 2017, 38(12): 3491-3497.
DOI：

LI Xiao-long, ZHANG Tian-tian, WANG Fu-ming, et al. Application of Youngs method in tracking the moving interface of expansible grout[J]. 2017, 38(12): 3491-3497. DOI： 10.16285/j.rsm.2017.12.013.

摘要

数值模拟是研究浆液在岩体裂隙中扩散规律的重要途径之一。对浆液运动界面进行准确地追踪，是建立浆液流动扩散仿真分析方法需要解决的一个关键问题。以自膨胀浆液在平板裂隙中流动扩散过程为对象，考虑浆液扩散过程中两相流特征，引入VOF函数描述两相介质分布，采用基于几何学原理的Youngs方法求解VOF方程，以实现对浆液移动界面的追踪。利用已知密度随时间变化规律的自膨胀浆液在平板裂隙中自由扩散算例对该方法进行测试，结果表明，不同时刻求解得到的浆液移动界面位置和轮廓与解析解吻合较好，显示了较高的计算精度和良好的界面追踪效果，为开发自膨胀浆液流动扩散仿真程序奠定了基础。

Abstract

Numerical simulation is the most efficient way to investigate the mechanism of grout diffusion in jointed rocks

but one of the most critical challenges is to accurately track the grout flow in numerical simulation. This study was focused on the diffusion process of self-expanding grout in the flat fracture surface and considering characteristics of two-phase flow in the grout diffusing. Moreover

the VOF function was employed to describe the distribution of two-phase medium

and then was solved by Youngs method based on the principle of geometry. Thus

the tracking of grout moving interface was realised. Finally

the proposed method was examined by an example of the self-expanding grout with a known density freely diffusing with time in a plat fracture surface. The results showed that the analytical solutions were in good agreements with obtained locations and contours of the grout moving interface at different times in the example. Hence

the results verified that the proposed method had a high calculation precision and exhibited a sound effect of interface tracking. This study lays a solid foundation for developing the numerical method for simulating the diffusion processes of self-expanding grout flow.

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