呼伦贝尔沙质草原表土物理力学性质
收稿日期: 2014-04-13
修回日期: 2014-06-22
网络出版日期: 2015-07-20
基金资助
国家自然科学基金项目(40961010);内蒙古自治区交通运输科技项目(NJ-2013-25)
Top Soil Texture, Physical and Mechanical Property of the Hulunbuir Sandy Grassland, Inner Mongolia, China
Received date: 2014-04-13
Revised date: 2014-06-22
Online published: 2015-07-20
殷玲 , 张德平 , 成永会 , 靳立宁 , 赵家明 , 巴日斯 , 海军 , 祁晓燕 , 屈建新 . 呼伦贝尔沙质草原表土物理力学性质[J]. 中国沙漠, 2015 , 35(4) : 930 -936 . DOI: 10.7522/j.issn.1000-694X.2014.00083
Research into topsoil texture, physical and mechanical properties within the depth of thirteen centimeters has been carried out based on field survey and laboratory tests on bearing capacity and shear deformation analysis in the sandy grassland of Hulunbuir, Inner Mongolia. It is discovered that the topsoil could be named fine sand, with poor grain size distribution, and layered structure. Soil dry density is between 1.34 g·cm-3 and 1.51 g·cm-3, soil cohesive forces between 12 kPa and 27.4 kPa, soil internal friction angle falls between 22.5° and 24°, and soil modulus of deformation is 8.5 MPa. It was discovered that the soil engineering property of the lower bed is better. Top soil characteristic value of bearing capacity was 150 kPa, and its ultimate bearing capacity was 300 kPa. Punching shear destruction (The plastic damage) and General shear failure(Brittle failure)is usual as soil carrying capacity is weak.
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