碎石土边坡石灰改良与桩锚护坡稳定性数值分析

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Abstract By compounding raw lime powder with gravel-soil taken from mining area in Bangpu of Tibet，the largedirect shear test for improved gravel-soils with lime-soil ratios of 3%，5%，7% and 9% was conducted to investigate the shear strength of gravel-soils with lime improved and the improvement effect. The tests show that：as the moisture content of the soil sample reduces，the bite friction and cohesive strength of samples increases，the shear strength of gravel-soil increase with lime addition；and the improvement effect with lime-soil ration of 9% is best. Finally，based on the indoor test results and theoretical formula，the gravel-soil slope protection with lime improves，anchor slope protection，anti-slide pile slope protection and with the above method combined slope protection in North-east Bangpu of Tibet are analyzed with FLAC3D numerical model. It shows that the maximum horizontal displacement of slope decrease significantly，and with no breakthrough of plastic zone，and the glide force reduce effectively after using the gravel-soil slope joint protection with lime addition，anchor reinforcement and anti-slide pile. The joint slope protection method can be more effective than above three separate method.

Key words： slope engineering gravel-soils with lime improved large direct shear experiment FLAC3D numerical model pile-anchor slope protection

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	Articles by authors
	WANG Xingang1
	HU Bin1
	LIAN Baoqin2
	JIANG Haifei1
	YU Hongming1

Cite this article:

WANG Xingang1,HU Bin1,LIAN Baoqin2, et al. GRAVEL-SOIL SLOPE WITH LIME IMPROVED AND NUMERICAL ANALYSIS ON STABILITY OF GRAVEL-SOIL SLOPE WITH PILE-ANCHORS[J]. , 2013, 32(s2): 3852-3861.

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3852

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