Modelling of chemical grout column permeated by water in transparent soil
Modelling of chemical grout column permeated by water in transparent soil
复制标题
透明土壤中水渗透的化学灌浆柱建模
DOI：
10.1504/ijep.2016.10000744
复制
发表时间：
2016-10
影响因子：
0.7
通讯作者：
Sui Wang-Hua
中科院分区：
文献类型：
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作者：
Gao Yue;Sui Wang-Hua
采用透明土模型和有限元模型，模拟了无粘性土中化学浆液的注入和水的渗透过程。采用脲醛树脂作为灌浆材料进行透明土模拟。两个黑色和白色电荷耦合器件摄像机安装在正交位置，以提供地下水-灌浆界面的三维视图。地下水-灌浆界面主要受流动水平流的影响，由于灌浆压力的降低，流动水与注入点的距离增加。基于多孔介质中的流体动力学和达西定律，提出了一个方程来预测在流动的水的地下水-浆液界面的位移。基于有限元数值模型也被开发来模拟这个过程。数值模拟结果与物理模拟结果吻合较好。
The process of injecting chemical grout into cohesionless soil and its permeation by water are simulated by using a transparent soil model and a finite element model (FEM). The urea-formaldehyde resin is used as the grouting material in the transparent soil modelling. Two black and white charge-coupled device cameras are mounted in an orthogonal position to provide a three dimensional view of the groundwater-grout interface. The groundwater-grout interface is primarily influenced by the advection of the flowing water with increasing distance from the injection point owing to the reduction in the grouting pressure. An equation based on fluid dynamics in porous media and Darcy's law is then proposed to predict the displacement of the groundwater-grout interface in flowing water. A numerical model based on the FEM is also developed to simulate this process. The numerical simulation results are found to match the physical modelling well.