TOPRAK SU DERGİSİ - SOIL WATER JOURNAL, 2015 Özel Sayı - 2015 Special Issue

Study of classification and estimation models for soil loss disturbed by engineering construction

Duihu Ning, Xiaoying Liu, Pengfei Du


Growing interest in the research of soil loss caused by human activities has attracted public attention
over the world especially for the developing countries. However, existent soil erosion estimation models
focused on natural than artificial conditions, and particularly the models used to estimate the soil erosion
rate to the latter involves a number of uncertainties, which require further attention. To develop scientific
models, it is necessary to extract the characteristics of soil bodies that formed in different engineering
construction programs. This contribution reports the results of an investigation of classifications in various
artificial programs around China. Some indexes, such as slope gradient, slope length, soil layer depth,
vegetation coverage were measured for accumulated spoil and cutting edges, which were caused in
the process of construction. Soil samples were also collected from different sites representative of different
types of projects and distributed in different areas of China. Measurements of soil density and soil particle
size were made on these samples. Four classifications were given and related experiments, including
artificial simulation rainfall, field wind tunnel simulation were taken to calculate the influence of wind
factors on erosion modulus and to estimate the change of different disturbance times. On the basis of
analyzing, the crucial parameters to contribute soil loss were selected and the models framework using
for calculating different types soil erosion were put forward.

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