Evaluation of long-term anti-seepage performance of capillary barrier cover in semi humid area and analysis on meteorological mechanism of percolation

被引：0
作者：
Jiao W. [1 ,2 ]
Lin C. [1 ]
Tu B. [2 ]
He M. [1 ]
Liu Z. [1 ]
Zhang Y. [1 ]
机构：
[1] Guizhou Institute of Technology, Guiyang
[2] Guizhou Construction Science Research & Design Institute Co., Ltd., CSCEC, Guiyang
来源：
Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2023年 / 56卷 / 10期
关键词：
capillary barrier cover; design of anti-seepage; landfill; meteorological mechanism of percolation; permeable climate period; semi humid climate area;
D O I：
10.15951/j.tmgcxb.22050482
中图分类号：
学科分类号：
摘要：
In order to evaluate the long-term anti-seepage performance of capillary barrier cover in semi humid climate area of Northwest China, and to reveal the permeable climate period and meteorological mechanism of percolation, the climatic characteristics in past 50 years are collected and analyzed. Based on numerical simulation, the long-term anti-seepage performance of soil cover is analyzed by coupling the regional climate. The research results show that: 1the rainfall is more and the temperature is high from April to November, while the rainfall is less and the temperature is low from December to next April. It is beneficial to water release with rain and heat at the same time. 2Rainfall peaks between July and September, and evapotranspiration peaks in June. With lots of rainfall from July to November, the temperature gradually decreases, the vegetation gradually withers, the evapotranspiration weakens, and the water release intensity slows down, which is easy to lead to percolation. From November to March of the next year, with precipitation scarce, the anti-seepage effect is good. 3In anti-seepage design, November to March of the next year is not the decisive period. July to November is permeable period, during which management and design should be emphasized. © 2023 Editorial Office of China Civil Engineering Journal. All rights reserved.
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页码：118 / 126
页数：8
相关论文
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