Study on the Impact of Groundwater and Soil Parameters on Tunnel Deformation and Sensitivity Analysis
Source abstract
Abstract
Based on the Xiaolangdi North Bank Irrigation Area Project, this study combines numerical simulation and BP neural network methods to investigate the sensitivity of tunnel soil and its parameter inversion under continuous heavy rainfall. The research results indicate that changes in water-level and soil strength parameters have a significant impact on the deformation of tunnel surrounding rock. By comparing the sensitivity factors of different parameters, the main parameter sensitivities affecting the displacement of tunnel surrounding rock were determined to be water level, internal friction angle, and cohesion. The mechanical characteristics of the tunnel construction process were analyzed using finite difference method numerical analysis software FLAC3D, and the results were used as a sample dataset for inversion analysis. Through neural network inverse analysis based on orthogonal design method, the cohesion and internal friction angle of loess layer ④, loess layer ④-1, and loess layer ⑤ were determined, and the data of groundwater level elevation were obtained. Field applications proved the effectiveness and rationality of this method.
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Research context
OpenAlex topics: Geotechnical Engineering and Analysis · Civil and Geotechnical Engineering Research · Geotechnical Engineering and Underground Structures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Henan Water Conservancy Survey Co., Ltd., Zhengzhou 450008, China
Control Engineering Technology Institute of Special Geotechnical Environment of Henan, Zhengzhou 450008, China
College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
Funding
Henan Province 2022 Water Science and Technology Project · Key Research and Development Project of Henan Province · National Key Research and Development Project of China · National Natural Science Foundation of China · Henan Provincial Science and Technology Research Project · Key Research Projects of Higher Education Institutions in Henan Province
References (22)
Show source-provided references
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