Study on Diffusion Laws for Cement Slurry in Surrounding Rock of Tunnels Considering Gravity and Time-Varying Viscosity of Slurry

HAN Xiaolong; LI Chaoyue; WANG Gang; YANG Zhiquan; FENG Chuangcheng; LI Ming; ZHAO Cansong; ZHANG Zehao; HE Na; WANG Xiangpeng; YE Zhangwen; YUAN Liwei; YANG Taiqiang; XI Wenfei; LI Xiaohui

doi:10.13204/j.gyjzG21090708

Volume 52 Issue 3

Jul. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(3): 38-43

HAN Xiaolong, LI Chaoyue, WANG Gang, YANG Zhiquan, FENG Chuangcheng, LI Ming, ZHAO Cansong, ZHANG Zehao, HE Na, WANG Xiangpeng, YE Zhangwen, YUAN Liwei, YANG Taiqiang, XI Wenfei, LI Xiaohui. Study on Diffusion Laws for Cement Slurry in Surrounding Rock of Tunnels Considering Gravity and Time-Varying Viscosity of Slurry[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 38-43. doi: 10.13204/j.gyjzG21090708

Citation:

HAN Xiaolong, LI Chaoyue, WANG Gang, YANG Zhiquan, FENG Chuangcheng, LI Ming, ZHAO Cansong, ZHANG Zehao, HE Na, WANG Xiangpeng, YE Zhangwen, YUAN Liwei, YANG Taiqiang, XI Wenfei, LI Xiaohui. Study on Diffusion Laws for Cement Slurry in Surrounding Rock of Tunnels Considering Gravity and Time-Varying Viscosity of Slurry[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 38-43. doi: 10.13204/j.gyjzG21090708

Citation:

HAN Xiaolong, LI Chaoyue, WANG Gang, YANG Zhiquan, FENG Chuangcheng, LI Ming, ZHAO Cansong, ZHANG Zehao, HE Na, WANG Xiangpeng, YE Zhangwen, YUAN Liwei, YANG Taiqiang, XI Wenfei, LI Xiaohui. Study on Diffusion Laws for Cement Slurry in Surrounding Rock of Tunnels Considering Gravity and Time-Varying Viscosity of Slurry[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 38-43. doi: 10.13204/j.gyjzG21090708

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Study on Diffusion Laws for Cement Slurry in Surrounding Rock of Tunnels Considering Gravity and Time-Varying Viscosity of Slurry

doi: 10.13204/j.gyjzG21090708

1. The Third Engineering Co., Ltd., China Railway the Seventh Bureau Group Corporation, Xi’an 710026, China;
2. Faculty of Public Safety and Emergency Management, Key Laboratory of Geological Disaster Risk Prevention and Control and Emergency Disaster Reduction of Ministry of Emergency Management of the People's Republic of China, Key Laboratory of Early Rapid Identification, Prevention and Control of Geological Diseases in Traffic Corridor of High Intensity Earthquake Mountainous Areas of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China;
3. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
4. College of Environment and Engineering, Chengdu University of Technology, Chengdu 610059, China;
5. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Yunnan 650093, China;
6. Faculty of Geography Science, Yunnan Normal University, Yunnan 650500, China

Received Date: 2021-09-07

Abstract

Abstract

The gravity and the time-varying viscosity of slurry have a significant impact on the effective diffusion range and diffusion form of slurry, and the diffusion range of slurry plays a decisive role in the safety of tunnels. Based on the fluid-solid coupling theory and seepage mechanics theory, a grouting slurry diffusion equation was constructed considering the coupling effect of the gravity and the time-varying viscosity of slurry. The numerical simulation of grouting diffusion processes of pipe sheds in weathered slate in the Jiuzhai tunnel engineering was performed by software COMSOL Multiphysics. The influences of grouting pressure, time variation of slurry viscosity and grouting time on effective diffusion ranges of grouteing and formation of grouting reinforcement rings were analyzed. The results showed that the diffusion pattern of slurry in rock and soil was ellipsoid in consideration of the gravity of slurry. The smaller the grouting pressure and the longer the grouting time, the more significant the influence of slurry gravity on the diffusion pattern was. The diffusion ranges of the grouting above the horizontal level of the grouting hole was much smaller than that below the horizontal level, and the diffusion ranges of the grouting on the left and right sides of the grouting hole were symmetrical, which was consonant with the mechanism of gravity. The effect of time-varying viscosity on slurry diffusion was significant. The distribution form of the grouting reinforcement ring was closely related to the embedding angle of grouting pipes. The smaller the embedding angle of grouting pipes, the larger the thickness of the grouting reinforcement ring. The reasonable arrangements of small pipes were key to obtain the effective grouting reinforcement ring.
- gravity of slurry,
- fluid-solid coupling theory,
- grouting reinforcement ring

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References(15)

References

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