Simulated rainfall soil column infiltration test system

Abstract

The invention provides a simulated rainfall earth pillar infiltration test system which is used for researching infiltration laws of rainfall in unsaturated soil. The simulated rainfall earth pillar infiltration test system is characterized in that the test system comprises a simulated rainfall device, a rainwater receiving device, a data acquisition device, a control system and a data analysis device, the simulated rainfall device comprises a water storage tank, a water flow circuit unit and a spray component, the water flow circuit unit is connected with the water storage tank, the spray component for simulating rainfall is connected with the water flow circuit unit, the rainwater receiving device comprises a plurality of soil column cylinder units and runoff drainage units, the soil column cylinder units are arranged on the lower portion of the spray component, the runoff drainage units are arranged on the outer sides of the soil column cylinder units, the data acquisition device comprises a water supply flow meter, drainage flow meters and a plurality of sensor units, the water supply flow meter is arranged on the water flow circuit unit, the drainage flow meters are arranged on the runoff drainage units, the sensor units are arranged on the soil column cylinder units and used for acquiring rainfall earth pillar infiltration data, the control system is used for controlling water supply quantity of the water flow circuit unit and drainage of the runoff drainage units, and the data analysis device is used for receiving data acquired by the data acquisition device and analyzing the data to obtain the infiltration laws of rainfall in the unsaturated soil.

Description

technical field [0001] The invention belongs to the field of soil water environment tests and relates to a soil column infiltration test system for simulating rainfall. Background technique [0002] The components of urban waste mainly include coal ash, organic (kitchen waste, paper), and inorganic (glass, construction waste). Due to the complex and diverse components of municipal solid waste, it is difficult to deal with and utilize them. At present, the waste disposal methods mainly include sanitary landfill, composting and incineration, etc., and sanitary landfill is the main method, and many sanitary landfills are facing closure. Composition is very important. [0003] Soil is the most durable geotechnical material in the natural environment. Soil cover is widely used in garbage dumps, solid waste dumps and tailings, mainly to prevent atmospheric precipitation from entering the underlying waste, thereby avoiding pollution to the surrounding environment. At present, t...

AI Technical Summary

Problems solved by technology

In short, the existing rainfall simulation devices do not consider the influence of time and space changes and model surface runoff. During the test, the rainfall cannot be continuously measured. The intensity and type of rainfall are single, and intermittent rainfall cannot be continuously measured. In this case, the rainfall cannot be truly simulated, and the law of soil infiltration during real rainfall cannot be obtained.

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