期刊论文

DIFFUSION MECHANISM OF PULSATING GROUTING IN COMPLETELY WEATHERED ALTERED GRANITE CONSIDERING INFILTRATION EFFECT

中文

工程地质学报

1004-9665

2023

31

6

2060-2070

10.13544/j.cnki.jeg.2021-0637

本校为第一机构

脉动注浆作为深厚覆盖层防渗加固处理的新工艺,尽管已得到一定应用,但脉动压力作用下相应浆液的扩散规律尚不明确.基于脉动注浆理论模型,推导了脉动注浆浆液扩散运移解析方程;采用数值模拟构造脉动周期压力变化模型,依托COMSOL多物理场耦合平台结合MATLAB,开发了考虑渗滤效应的脉动注浆扩散数值模拟程序,模拟脉动注浆的"浆-土"耦合作用过程;并通过自设计的脉动和稳压注浆模拟试验装置,对比脉动注浆与稳压注浆的浆液扩散差异;通过以上方法的相互验证,揭示了颗粒悬浮液流体在脉动压力作用下于全风化花岗岩体的扩散基本规律.研究结果表明:在全风化花岗岩体中,稳压注浆容易劈裂形成浆脉,扩散渗滤范围...

Although pulsating grouting has been used as a process for anti-seepage reinforcement treatment of loose strata,the diffusion law of slurry under pulsating pressure is still unclear.Based on the theoretical model of pulsa-ting grouting,the slurry transport equation considering the percolation effect is derived.The numerical simulation program of pulsating grout diffusion considering the percolation effect is obtained by relying on COMSOL Multiphys-ics platform and Richards equation,combined with MATLAB secondary development.The pulsating and steady pressure grouting simulation device is self-d...