Inverse Modeling of Grout Curtain Hydraulic Conductivity Evolution Considering the Calcium Leaching Effect

Kailai Zhang, Zhenzhong Shen, Liqun Xu, Yongkang Shu and Chao Yang
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Kailai Zhang: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
Zhenzhong Shen: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
Liqun Xu: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
Yongkang Shu: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
Chao Yang: College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China

Mathematics, 2022, vol. 10, issue 3, 1-14

Abstract: The calcium leaching effect inevitably increases the grout curtain hydraulic conductivity. It is diffucult to sample and obtain the leaching-related calculation parameters for deep-buried grout curtains. This study introduced the inversion method into the calcium leaching analysis to get proper leaching-related calculation parameters and accurate results. An inverse analysis model was proposed using the genetic algorithm (GA) and finite element analysis technology to solve the calcium leaching problems. The objective function is constructed using the hydraulic head and leakage quantity time-series measurements, which improves the uniqueness and reliability of the inverse results. The proposed method was applied to the inverse analysis of the hydraulic conductivity evolution of the grout curtain in a concrete dam foundation. The predicted water heads and leakage quantity are consistent with the monitored data, indicating the rationality of this simulation. The grout curtain hydraulic conductivity prediction in 100 years is also presented. The results illustrate the feasibility of the proposed method for determining leaching-related parameters and the hydraulic conductivity prediction in the leaching process.

Keywords: inverse modeling; calcium leaching; grout curtain; hydraulic conductivity (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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