首页|Modelling the water diversion of a sustainable cover system under humid climates

Modelling the water diversion of a sustainable cover system under humid climates

扫码查看
原文链接
  • 万方数据
  • 维普
Extreme rainfall significantly threatens the safety of the landfill cover system,especially under humid climates.This study aims to provide design recommendations for a sustainable landfill cover system consisting of a low-permeability soil layer underlying a two-layer capillary barrier for humid climates.First,the numerical back-analysis was conducted for verification against a series of flume model tests.Then,a parametric study was performed to investigate the effects of inclination angle,particle size and layer thickness on the lateral diversion length(DL)of the three-layer cover system under the 100-year return period rainfall of humid climates.The results show that the water lateral DL of the cover sys-tem can be greatly enhanced by increasing the inclination angle from 3° to 18°.Moreover,the bottom layer of the cover system with a coarser d10 was more susceptible to the impact of the heavy rainfall,while this can be alleviated by increasing the thickness of the bottom layer.A dimensionless number,defined as the ratio of thickness and d10 of the bottom layer,is proposed for designing lateral diversion of the three-layer cover system under humid climates.To preserve the maximum DL,it is suggested that the proposed dimensionless number should be larger than 95 and 110 for the design of rainfall events with 50-year and 100-year return periods for humid climates,respectively.

Unsaturated soilRecyclingConstruction wasteThree-layer landfill coverWater infiltration

Haowen Guo、Charles Wang Wai Ng、Qi Zhang、Chuanxiang Qu、Liwen Hu

展开 >

Shenzhen Research Institute of Hong Kong University of Science and Technology,Shenzhen,518057,China

Department of Civil and Environmental Engineering,The Hong Kong University of Science and Technology,Hong Kong SAR,999077,China

CCCC Fourth Harbor Engineering Institute Co.,Ltd,Guangzhou,510230,China

National Natural Science Foundation of Chinaarea of excellence projectResearch Grants Council of HKSAR and Shenzhen Science and Technology Program

U20A20320AoE/E-603/18KCXFZ20211020163816023

2024

10.1016/j.jrmge.2023.10.017

岩石力学与岩土工程学报(英文版)
中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD
影响因子：0.404
ISSN：1674-7755
年,卷(期)：2024.16(7)