Development and application of grouting simulation test system considering slurry seepage-rock mass deformation coupling effect

被引：0
|
作者：
Zhai M. [1 ,2 ]
Li Z. [1 ,2 ]
Du F. [1 ,2 ,3 ]
Bai H. [4 ]
Wang W. [1 ]
机构：
[1] School of Energy Science and Engineering, Henan Polytechnic University, Henan, Jiaozuo
[2] Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Henan Polytechnic University, Henan, Jiaozuo
[3] Henan Mine Water Disaster Prevention and Control and Water Resources Utilization Engineering Technology Research Center, Henan Polytechnic University, Henan, Jiaozuo
[4] State Key Laboratory of Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Jiangsu, Xuzhou
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2024年 / 43卷 / 04期
基金：
中国国家自然科学基金;
关键词：
rock mass deformation; rock mass fracture; rock mechanics; slurry diffusion; visual simulation test;
D O I：
10.13722/j.cnki.jrme.2023.0571
中图分类号：
学科分类号：
摘要：
To study the slurry seepage-rock mass deformation coupling effect during grouting in fractured rock mass , a visual fracture grouting simulation test system with variable fracture aperture was developed independently. This system included slurry supply equipment, grouting simulation equipment and data monitoring equipment. It had good sealing performance and achieved fracture aperture change under grouting pressure, and can simulate the slurry flow process under the influence of multi-source factors such as grouting flowrate, water-cement ratio, lateral pressure and so on. It was also can be used to study the mechanism of gas seepage-rock mass deformation coupling effect. A grouting simulation experiment was conducted using the system to investigate the slurry seepage-rock mass deformation coupling effect. The results showed that:the increase in fracture aperture weakened the expansion effect of grouting pressure on fracture plate, reducing energy loss during slurry flow, the decrease in water-cement ratio significantly enhanced the slurry seepage-rock mass deformation coupling effect, and the increase in lateral pressure weakened the degree of slurry seepage-rock mass deformation coupling effect. The results of grey correlation analysis showed that the order of factors affecting the sensitivity of slurry seepage-rock deformation coupling effect was grouting flow＞lateral pressure＞slurry water-cement ratio＞fracture aperture. The development of this test system provides a new method for studying fluid-structure interaction and engineering applications of rock mass deformation induced by grouting in fractured aquifers. © 2024 Academia Sinica. All rights reserved.
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页码：878 / 889
页数：11
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