关键词: 开挖面, 土壤流失量, 监测

Abstract: Engineering excavated slope is one of the main source of water and soil loss caused by human activity. It is of practical significance to monitor soil and water loss accurately and rapidly. Through investigating different types of engineering excavated slopes in four typical regions, we proposed the classifications of excavated slope. According to the differentiation characteristics of underlying surface, excavated slope is divided into homogeneous surface and heterogeneous surface. And according to the effect of upslope runoff, excavated slope is further divided into surface with upslope runoff and surface without upslope runoff. Generally, the underlying surface of excavated slope has high compactness and bulk density, the gradient varies in the range from 30° to 70°, the length of slope is approximately 10 meters, and the time of excavating is within two years. Through comprehensive analysis, it’s deduced that the soil loss monitoring should be accurate to ton, and the form of soil and water loss is gully erosion mostly. The soil loss monitoring for excavated slope should be focused on slopes affected by upslope surface with gully erosion and excavated within two years. After comparing the existing monitoring technologies, it’s proposed that the best technology for rapidly monitoring the soil loss of excavated slope is 3-D Laser Scanner.

Key words: excavated slope, soil loss, monitoring