Applications of jet - grouting technology in the Metroline No.1 project at Ho Chi Minh City
Abstract
The rapid development of economy and the booming urban population in large cities in Vietnam such as Hanoi and Hochiminh city lead to many urban problems of traffic jams and environmental pollutions such as dust and noise contaminations. These issuses effect directly on the health and the living of urban civilians in these cities. In order to solve these urgent transportation and social problems, some metroline projects recently have been carried out in Hanoi and Hochiminh city to meet the high urban transportation demands and to solve congestion problems. Since some Metro line projects in Hanoi and Hochiminh city have been carried out in soft soil conditions, ground improvement methods become a necessary requirement in these projects for ensuring the success of metroline projects and avoiding any potential damage occurred in the tunnelling process. A state - of - the - art soil improvement method with the jet - grouting technology has been applied in Hochiminh Metroline No.1 project with purposes of stabilizing the tunnelling process and protecting nearby existing buildings. This paper presents some applications of the jet - grouting technology when tunnelling by an earth pressure balance tunnel boring machine in the Hochiminh Metroline No. 1 project at the starting and arriving shaft areas for stabilizing the tunnelling process as well as at the Saigon Municipal Opera House area in Hochiminh city with a role of protecting method for the important historical building. By collecting design and site data combining with the analysis of the experimental and observed data obtained from the Hochiminh Metroline No.1 project, the stdy results show the effectiveness of the jet - grouting technology when applying in tunnelling projects with soft soil conditions in Vietnam. The results are also a designing reference for near future metroline project in Hanoi and Hochiminh city.References
Croce, P., Flora, A. and Modoni, G., (2014). Jet - grouting: technology, design and control. CRC Press.
Kimura, T. and Mair, R., (1981). Centrifugal testing of model tunnels in soft clay. In Proceedings of the 10th international conference on soil mechanics and foundation engineering, pages 319 - 322.
Lunardi, P., Focaracci, A., Giorgi, P. and Papacella, A., (1992). Tunnel face reinforcement in soft ground design and controls during excavation. In Proceedings of the International Conference Towards New Worlds in Tunnelling, volume 2, pages 897 - 908.
Mair, R. and Taylor, R., (1999) Theme lecture: Bored tunnelling in the urban environment. Fourteenth International Conference on Soil Mechanics and Foundation Engineering. Proceedings International Society for Soil Mechanics and Foundation Engineering. 2353 - 2385.
Moseley,M. P. and Kirsch, K., (2004). Ground improvement. CRC Press.
Pelizza, S. and Peila, D., (1993). Soil and rock reinforcements in tunnelling. Tunnelling and Underground Space Technology, 8(3):357 - 372.
Oteo, C. S., Arnaiz, M., Trabada, J., Melis, M. & Mendana, F., (2000). Experiences in the subsidence problems in Madrid Subway Extension. In Geotechnical aspects of underground construction on soft ground. 275 - 280.
Sola, P. R., Monroe, A. S., Martin, L., Blanco, M. A. & San Juan, R., (2003). Ground treatment for tunnel construction on the Madrid Metro. In Grouting and Ground Treatment. 1518 - 1533.
Vu, M. N., Broere, W. & Bosch, J., (2015). Effects of cover depth on ground movements induced by shallow tunnelling. Tunnelling and Underground Space Technology 50, 499 - 506.
Vu, M. N. and Le, Q. H., (2020). Large soil - cement column applications in Vietnam. In Geotechnics for Sustainable Infrastructure Development (555 - 562). Springer, Singapore.
Vũ Minh Ngạn , Nguyễn Văn Luyến, Đào Phúc Lâm, (2020). Các giải pháp giảm thiểu ảnh hưởng của thi công hầm trong thành phố đến các công trình lân cận. Tạp chí Khoa học Kỹ thuật Mỏ - Địa chất. Số 61, kỳ 6, trang 57 - 65.
Yahiro, T. and H. Yoshida, (1973). Induction grouting method utilizing high - speed water jet. Proceedings of the 8th ICSMFE, Moscow, Russia. 402 - 404.
Yahiro, T., H. Yoshida and K. Nishi, (1974). Soil improvement utilizing a high - speed waterjet and air jet. Proceedings of the 6th International Symposium on Water Jet Technology, Cambridge, United Kingdom, Paper J62, August 30 - 31. 397 - 428.
Yahiro, T., H. Yoshida and K. Nishi, (1975). The development and application of Japanese grouting system. Water Power Dam Construction 27. 55 - 69.
Yoshida, H., S. Jimbo and S. Uesawa, (1996). Development and practical applications of large diameter soil improvement method, In R. Yonekura and M. Shibazaki, eds., Proceedings of the Conference on Grouting and Deep Mixing, Tokyo, Japan: Balkema, May 14 - 17. 721 - 726.
