加肋土工膜与土工布界面模型试验与数值模拟

doi:10.12066/j.issn.1007-2861.1928

Abstract

Abstract:

To study the effect of ribbed geomembrane on stability of a landfill liner system, an indoor model test of the ribbed geomembrane liner system is designed. According to the principle of orthogonal test, considering shape, height and space of the rib, ten test cases are designed to study the settlement of the liner system. Analysis results show that optimal values exist. The optimal rib space is between 175 mm and 400 mm, and the optimal rib height is between 4.5 mm and 6.0 mm. On this basis, numerical simulation of the model test is carried out using the particle flow software PFC$^{\rm 2D}$. It has been shown that the PFC simulation can well fit the indoor load-settlement model. The sandy soil particles operation and stress change neared ribbed geomembrane can be obtained. The track and force mechanism of the internal particle in the model are revealed.

Key words: ribbed geomembrane, indoor model test, particle flow code

CLC Number:

TU531.7

GAO Junli, LI Houwei, CAO Wei. Experimental research and numerical simulation of interface between ribbed geomembrane and geotextile[J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(2): 317-327.

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Experimental research and numerical simulation of interface between ribbed geomembrane and geotextile

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