INFLUENCE OF RAINFALL PATTERN ON THE INFILTRATION INTO LANDFILL EARTHEN FINAL COVER
Rainfall pattern is an important factor that affects the infiltration process into earthen final covers of landfills. In this paper, six typical rainfall patterns present in nature were sorted out. Then the rainfall patterns were used as the infiltration boundaries of an earthen final cover model, and numerical simulations of the infiltration process were carried out by the use of the commercial software SVFlux. The numerical simulation model was firstly verified by experimental data. A parametric study was performed to investigate the influence of rainfall patterns on the infiltration process in the silty soil cover. The numerical simulation results indicate that the rainfall pattern can significantly affect the infiltration process and cumulative infiltration under the same total amount of precipitation. The peak rainfall intensity occurs earlier, the cumulative infiltration will be larger. The advanced pattern (A1) will generate the largest amount of infiltration compared to other patterns. The numerical analyses also suggest that rainfall pattern should betaken into account in the performance assessment of earthen final covers.
Rainfall pattern Earthen final cover Infiltration Numerical simulation
Guan-Wei JIA Tony L.T.ZHAN Yun-Min CHEN D.G.FREDLUND
MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
641-645
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）