PORE PRESSURE MONITORING AND SLOPE STABILITY ANALYSIS OF A WASTE LANDFILL

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Abstract Field monitoring is used to determine the pore pressure in a landfill；and the distribution of leachate level is obtained by analyzing the monitoring results. To determine the shear strength parameters of buried waste at different depths of the landfill，the triaxial test is conducted；and the influences of pore water pressure and poreair pressure on slope stability of the landfill are analyzed quantitatively by using limit equilibrium method. The research results show that the leachate level is high，and there is perched groundwater in the landfill because of the existence of intermediate cover. The triaxial tests demonstrate that the shear strengths for solid waste at different buried depths are different，and the effective cohesion of the buried waste decreases with buried depth，whereas the effective internal friction angle increases with buried depth. The leachate level can obviously influence the safety factor of landfill slope. The perched groundwater has a great influence on stability，whereas the pore air pressure has a minor impact on it.

Key words： slope engineering landfill pore pressure perched groundwater shear strength stability analysis

Received: 03 December 2009

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	ZHANG Wenjie1
	2
	LIN Weian2
	CHEN Yunmin2

Cite this article:

ZHANG Wenjie1,2,LIN Weian2, et al. PORE PRESSURE MONITORING AND SLOPE STABILITY ANALYSIS OF A WASTE LANDFILL[J]. , 2010, 29(S2): 3628-3632.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3628

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