›› 2011, Vol. 32 ›› Issue (11): 3212-3218.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of strength property of slip zone soils

CHEN Xiao-ping1, 2，HUANG Jing-wu1, 3，YIN Sai-hua1，ZHENG Jian-zhao1   

  1. 1. College of Science and Engineering, Jinan University, Guangzhou 510632, China; 2. Key Laboratory of Disaster Forecast and Control in Engineering, Jinan University, Guangzhou 510632, China; 3. Guangdong Hydropower Planning & Design Institute, Guangzhou 510170, China
  • Received:2010-12-07 Online:2011-11-01 Published:2011-11-09

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Abstract: Strength property of slip zone soils has important control action for slope stability. It is essential premise that revealing the variation law of strength indices for slope stability analysis. Aiming at an ancient landslide in reservoir area, the experimental study of shear strength of fine-grained soil containing coarse-grains in sliding zone was carried out. Based on large-scale field shear test and laboratory consolidated quick shear test, the shear characters of slip zone soils were compared; and the strength indices were defined by field recycled strength, field reduction strength, and consolidated quick shear strength in laboratory. For the deficiencies of repeated direct shear test in fine-grained soil containing coarse-grains, the improvement of test process and examination apparatus has been carried out; and the reasonability of test result was verified. Basis of the statistic rule of test data, the influence of moisture content, plasticity index, and coarse-grained content on strength indices has been discussed; the shear property distinctness between fine-grained soil containing coarse-grains and clay or sand was summarized.

Key words: slip zone soils, shearing test, fine-grained soil containing coarse-grains, residual strength

CLC Number: 

  • TU 411
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