文献类型：期刊文献

英文题名：Analytical solution for rainwater infiltration in monolithic soil covers under heavy rainfall and its implications for practice

作者：Li, Guangyao Liu, Zhaolong Jiao, Weiguo Feng, Song Zhan, Liangtong Du, Xiuli

第一作者：Li, Guangyao

通信作者：Feng, S[1]

机构：[1]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;[2]Hohai Univ, Key Lab Minist Educ Geomech & Embankment Engn, Nanjing 210024, Peoples R China;[3]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550003, Peoples R China;[4]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China;[5]Zhejiang Univ, MOE Key Lab Soft Soils & Environm Engn, Hangzhou 310058, Peoples R China

第一机构：Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通信机构：corresponding author), Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China.

年份：2025

外文期刊名：CANADIAN GEOTECHNICAL JOURNAL

收录：;EI(收录号：20251017984984);Scopus(收录号：2-s2.0-85219119139);WOS:【SCI-EXPANDED(收录号:WOS:001411020400001)】；

基金：The financial supports from the National Natural Science Foundation of China (Nos. 42107186, 52178320) , Natural Science Foundation of Beijing (No. 8242001) , and Natu-ral Science Foundation of Chongqing (No. CSTB2023NSCQ-MSX0729) are gratefully acknowledged. WJ wishes to thank the support from the National Natural Science Foundation of China (No. 52069005 and No. 52268053) .

语种：英文

外文关键词：monolithic soil cover; heavy rainfall; rainwater infiltration; slope stability; analytical solution

摘要：Global warming has caused frequent occurrences of extreme rainfall events worldwide. Studying the rainwater infiltration in monolithic soil covers (MSCs) and associated slope stability under heavy rainfall presents practical significance for landfill management. This study established an analytical solution for rainwater infiltration in MSCs during heavy rainfall assuming that the soil hydraulic properties follow exponential forms. The analytical solution was used to calculate the factor of safety (FOS) of MSCs after the verification with numerical simulations. It is found that the FOS for the potential slip surface at the cover bottom remained the lowest during and after heavy rainfall. The percolation and FOS might present pronounced "lag effects", meaning that the maximum percolation rate and minimum FOS occurred after heavy rainfall. A parametric study was conducted to reveal the influencing factors on the hydraulic response and slope stability of MSCs based on the analytical solution. Relevant results demonstrate that the hydraulic performance and slope stability could be improved by decreasing soil saturated hydraulic conductivity, increasing soil desaturation coefficient, and lowering water level in landfills. The results also reveal the existence of a threshold of soil saturated hydraulic conductivity (1 x 10-8 m/s for this study) for controlling the hydraulic performance and slope stability of MSCs. Furthermore, the analytical solution was applied to determine the rainfall intensity-duration threshold curves of MSCs. The results indicate that the obtained curves of MSCs satisfied exponential forms. This study provides an effective tool and valuable guidance for the design and maintenance of MSCs.