Indoor columnar soil layer infiltration automatic determination system

Abstract

The invention belongs to hydrologic observation equipment and in particular relates to an indoor columnar soil layer infiltration automatic determination system. An air vent electromagnetic valve is arranged on an air inlet pipeline on the top of a Marriott bottle, a water supply electromagnetic valve is arranged on a water inlet pipeline on the lower part of the Marriott bottle, a water outlet at the bottom of the Marriott bottle is connected with a water inlet on the top of a dial type sprinkler through a water outlet pipeline, and an adjusting valve is arranged on the water outlet pipeline; an experiment soil groove is formed below the dial type sprinkler, the upper part of the experiment soil groove is connected with the lower part of a runoff bottle through a runoff pipeline, and a free drain outlet is formed at the bottom of the experiment soil groove; a first liquid level sensor is arranged in the Marriott bottle, and a second liquid level sensor is arranged in the runoff bottle; and air vent electromagnetic valve, the water supply electromagnetic valve, the adjusting valve, the first liquid level sensor and the second liquid level sensor are respectively connected with a programmable controller. The indoor columnar soil layer infiltration automatic determination system is convenient in determination, high in accuracy and applicable to test operation of soil layer infiltration in the related fields of soil such as agriculture, soil environment and water resources.

Description

technical field [0001] The invention belongs to hydrological observation equipment, in particular to an indoor columnar soil layer rainfall infiltration automatic measurement system. Background technique [0002] Infiltration refers to the process of water (rainfall or irrigation) entering the soil. Soil water infiltration is a very important basic concept in hydrology. Quantitative description of soil infiltration process is an important basic content of water cycle and water utilization. It is very important for the study of surface runoff. The mechanism, as well as increasing soil infiltration and improving crop water use efficiency have important theoretical significance and practical value. At present, the traditional indoor rainfall infiltration experiment adopts the method of manual measurement, and uses the martens bottle to carry out artificial rainfall on the soil column with free drainage at the bottom. Infiltration. The principle of this method is clear, simple...

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Problems solved by technology

The principle of this method is clear, simple and easy to implement, but it is difficult to manually replenish water in the Martens bottle during the experiment; it takes a long time to manually watch and record the data; the accuracy of manual reading is poor, and the experimental data is not easy to save and process.

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