Device for Measuring Landslide Critical Angle.docVIP

Device for Measuring Landslide Critical Angle 　　摘 要： The mountain landslide has high destructive effects， discussion of its landslide critical angle has always been one of the major concerns， and we designed a system that can automatically measure the landslide critical angle. This equipment consists of the box， water flow device， rotation inclined plane， rotation driving mechanism， scale and sensor. We can effectively analyze the dynamic characteristics between the water flow and the soil mass， in this way to predict the possible gradient for landslide to occur. 　　关键词： Experimental apparatus，Landslide，Critical angle 　　Preface 　　Landslide is a common natural disaster in the mountainous area. China has special geologic structure， its mountainous areas account for 2/3 of the national territorial area， and the severity and wide distribution of its landslide disasters are very rare in the world[1].There are four main factors that could affect the landslide stability： the geological conditions， geographic and geomorphic conditions， human activities， climate and run-off conditions. Among them， gradient is the main parameter used to describe geographic and geomorphic conditions， which can affect the soil erosion degree and method， and it is very necessary to measure the critical gradient of different underlying surfaces. Therefore， we conduct research on the critical features of soil landslide and predict the possibility of slope landslide and calculate the time of landslide occurrence through effective analysis of the dynamic characteristics between the water flow and the soil mass， which has very important theoretical significance and actual application value. 　　The landslide test can be used to repeatedly stimulate the whole development process of soil landscape difficult to observe in the field in the laboratory within a short time. Since the early 20th century， some West European countries have started the structural model test and gradually developed similar