植被须根护坡力学效应的三轴试验研究

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Abstract To investigate the shear strength parameters of silty clay influenced by the water content and vegetation fibril content，the conventional triaxial consolidated undrained(CU) experiments on the soil sampled from Pingtou Village slope at Wuyi County in Zhejiang Province were carried out through. The experimental results show as follows：(1) With the increase in axial strain，the deviatoric stress increases，and the relation curves of deviatoric stress and axial strain present as hardening type. With the increase in confining pressure，the shear strength increases. (2) The water content of soil has great impacts on shear strength of the silty clay. The relationships between cohesion and water content present as parabola type. The cohesion would approach the maximum value when the water content is 19%；whereas with the increase in water content，the internal friction angle decreases linearly. (3) The vegetation fibril could improve the shear strength of silty clay，but it is related to the values of water content and vegetation fibril content. When the water content is 19%，the cohesion is improved greatly；and when the vegetation fibril is 5%，the cohesion approaches the maximum value. The internal friction angle is less influenced by the vegetation fibril. All results are meaningful to providing the quantitative information for prevention and treatment of Pingtou Village slope，as well as providing the necessary engineering design reference for protection of other slopes with vegetation fibril.

Key words： slope engineering slope protection with vegetation fibril mechanical effect shear strength water content triaxial compression experiment

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	Articles by authors
	ZHANG Feng1
	2
	LING Xianzhang1
	2
	WU Liquan3
	WANG Lina1
	2
	ZHU Zhanyuan1
	2
	4
	WU Hao1
	2

Cite this article:

ZHANG Feng1,2,LING Xianzhang1, et al. TRIAXIAL EXPERIMENTAL STUDY OF MECHANICAL EFFECT OF SLOPE PROTECTION WITH VEGETATION FIBRIL[J]. , 2010, 29(S2): 3979-3985.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3979

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