Optimization Analysis of Deformation of Underlying Tunnel in Dewatering and Excavation of Phreatic Aquifer
Joint Authors
Wang, Jing
Wang, Pengcheng
Wang, Wenda
Zhou, Shouqiang
Fang, Xiang
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-13
Country of Publication
Egypt
No. of Pages
15
Abstract EN
This paper theoretically analyzed the deformation law of the underlying tunnel caused by dewatering and excavation of deep foundation pit in the phreatic aquifer area, which is based on the Mindlin solution and the double-sided elastic foundation beam theory, and used the finite difference method and the fluid-solid coupling principle to conduct three-dimensional numerical simulation of dewatering and excavation of deep foundation pit with fluid-solid coupling by using FLAC3D5.00.
This research shows that the layered and segmented excavation method from the middle to the end by dewatering the skip layer has a better effect on optimizing the deformation of the underlying tunnel through the simulation of three excavation methods and two dewatering schemes crossing each other, which is about 2.5% less than the layer-by-layer dewatering scheme.
In addition, the deformation law of the simulated value is the same as the theoretical value, and the simulated value is slightly larger than the theoretical value.
Underlying tunnel only just exists vertical deformation at the direct center of the foundation pit, and the maximum deformation is about 3.054 mm under the dewatering well of the jumping layer and W3.
With the dewatering of jumping layer and the third excavation mode (W3), underlying tunnel only just exists lateral displacement at the position where is the retaining structure, and the maximum displacement is 1.606 mm.
American Psychological Association (APA)
Wang, Jing& Wang, Pengcheng& Wang, Wenda& Zhou, Shouqiang& Fang, Xiang. 2019. Optimization Analysis of Deformation of Underlying Tunnel in Dewatering and Excavation of Phreatic Aquifer. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1119445
Modern Language Association (MLA)
Wang, Jing…[et al.]. Optimization Analysis of Deformation of Underlying Tunnel in Dewatering and Excavation of Phreatic Aquifer. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1119445
American Medical Association (AMA)
Wang, Jing& Wang, Pengcheng& Wang, Wenda& Zhou, Shouqiang& Fang, Xiang. Optimization Analysis of Deformation of Underlying Tunnel in Dewatering and Excavation of Phreatic Aquifer. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1119445
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119445