Kyushu Space Mobile Soil and Water Loss Laboratory will be listed soon

The mobile soil erosion laboratory is a mobile experimental device designed for field investigation and observation of soil erosion. It is mainly composed of variable slope soil test tank, artificial simulated rainfall equipment, slope runoff erosion measuring device, power supply lighting, water supply and drainage. The system consists of a device, a computer data processing system, a support leveling device, and the like, and is equipped with a generator, a instrument cabinet, and the like.

The successful development of the mobile soil erosion laboratory is a revolution in the experimental observation of soil erosion on the slope. It overcomes the defects that the traditional experimental soil tank can not move, can not adjust the slope arbitrarily, and the data acquisition is slow. The slope can be between 0°-30°. Adjust freely. Speed ​​up data collection and shorten the experimental cycle. In addition, during the design and processing of this equipment, the traditional experimental soil trough was improved for the characteristics of soil erosion in the Yangtze River basin, and the soil middle flow collecting device was added to make the slope erosion experimental device more reasonable. The equipment can meet the research work of developing soil erosion and runoff on the slope surface, the law of sand production, and the hydrodynamic characteristics of the slope surface. It can also carry out soil and water conservation monitoring of the development and construction project, without having to set up soil and water conservation monitoring civil facilities on site. It saves a lot of manpower, material and financial resources, and can also greatly improve the accuracy of soil and water conservation monitoring. Especially through different types of disturbances and undisturbed soil rainfall erosion test, the accelerated soil erosion coefficient can be directly obtained, and the erosion background value of undisturbed soil is Maintain a direct basis for soil and water loss prediction during the programming process.

The traditional method of soil erosion experiment is to establish runoff plots with different slopes and different vegetation coverage in the field, and use natural rainfall to observe the slope soil erosion process. This method provides a lot of scientific data for soil erosion research. However, this method of using natural rainfall cannot quickly acquire data on surface soil erosion processes, making the period of soil erosion research long and costly, which limits the rapid development of soil erosion disciplines. In order to quickly study the soil erosion process and shorten the research cycle, some advanced technological powers such as the United States and Japan began to study how to transfer experiments in the field runoff community into the laboratory in the last century, eliminating the problem of being unable to conduct experiments due to natural weather conditions. Various forms of artificial simulated rainfall devices have been developed. In view of this situation, China began to introduce relevant technologies and equipment in the 1980s to carry out research on soil erosion laws. For example, the Institute of Soil and Water Conservation of the Chinese Academy of Sciences introduced the US artificial simulated rainfall device in the mid-1980s, and later solved the rainfall source. In addition, the modified fire truck was purchased, and the artificial rainfall simulation experiment was carried out using the characteristics of large fire and water supply pressure. This method was quickly applied in soil erosion research. In 2004, Chengdu Mountain Institute of the Chinese Academy of Sciences developed a soil-sloping soil erosion tank, and independently equipped a dedicated water supply vehicle (also modified for fire engines) and independent. The lower spray type artificial rainfall device, but because these devices are bulky, they have to be transported by car (which requires three cars at the same time). It is time-consuming and laborious to do artificial rainfall erosion experiments in the field, and it requires a large space. Extremely inconvenient.

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