土壤含水量对浅层滑坡区土体抗剪强度影响

通过对重庆缙云山一浅层滑坡区杉木和马尾松林地上土壤剖面原状土、过2mm筛后土壤的剪切试验，研究了土壤含水量对浅层滑坡区土体抗剪强度的影响。结果表明：原状土土壤断面抗剪强度随土壤天然含水量增大而减小，随土层加深而增大。土层越深，土壤含水量对土壤抗剪强度的影响越小。同一土壤在不同的含水量的条件下，随着含水量的增大，粘聚力C值和内摩擦角φ值均减小，并且土壤含水量对土壤粘聚力C值的影响程度大于对土壤内摩擦角φ值的影响程度。

Impacts of Soil Moisture Content on Soil Resistance Shearing Strength at Shallow Layer of Landslide Area

The shearing tests are conducted to the soil profile undistributed soil and 2mm sieves soil at the Chinese fir and masson pine land of shallow layer landslide area of Chongqing Mt.Jinyun.They studied the functions of soil contents to the shearing strength of soil body at the shallow layer landslide area.The results show that the shearing strength of the undistributed soil section decrease along with the increase of the soil natural water content,and increase follow with the deepen of the soil layer.The deep...