Evaporation-preventing double-ring infiltrometer easy to mount and fix

Abstract

The invention relates to an evaporation-preventing double-ring infiltrometer easy to mount and fix. The evaporation-preventing double-ring infiltrometer is composed of a water supply bottle, an inner ring, an outer ring, a fixing and connecting rod for connecting the inner ring and the outer ring, as well as a knocking cover board and an evaporation-preventing cover board which are mounted at the tops of the inner ring and the outer ring. All the components are independent, are convenient to carry, and are assembled after on-site tests. The inner ring and the outer ring are connected and fixed by the fixing and connecting rod, so that the integral rigidity of the inner ring and the outer ring is improved, and the bottoms of the double rings are prevented from entering soil to cause deflection. The knocking cover board is additionally arranged at the tops of the inner ring and the outer ring, when the inner ring and the outer ring are knocked, the inner ring and the outer ring stably enter the soil as a whole body, and can not warp up or incline. In addition, in the liquid permeation process, since the evaporation-preventing cover board is additionally mounted at the tops of the inner ring and the outer ring, so that great evaporation caused by weather is avoided. Therefore, the infiltration boundary conditions are strictly controlled while the infiltration capacity is accurately measured, so that the accurate infiltration rate of the soil is obtained, and the infiltration characteristics of the soil are mastered.

Description

technical field [0001] The invention relates to an infiltration meter for measuring soil infiltration rate on site, in particular to an evaporation-proof double-ring infiltration meter which is easy to install and fix. Background technique [0002] Infiltration refers to the process of rainfall, irrigation and other water entering the soil, and is an important link in the mutual transformation of rainfall, surface water and groundwater. Soil infiltration is closely related to soil erosion, surface runoff, farmland irrigation, and water-induced geological disasters. Therefore, it is very important to understand the infiltration performance of soil, especially the infiltration characteristics of soil on site. At present, the single-ring or double-ring infiltration method is mostly used to measure the soil infiltration rate on site. These test methods may have the following deficiencies during the test process: [0003] 1. The horizontal diffusion of water in the infiltration...

AI Technical Summary

Problems solved by technology

In the traditional double-ring method, the inner and outer rings are independent, and the center of the inner and outer rings cannot be guaranteed to be consistent during the process of driving the ring into the soil, which will cause water to diffuse horizontally during the infiltration process, affecting the accurate measurement of the infiltration rate

[0004] 2. Contact seepage may occur between the soil body and the inner and outer rings

When the inner and outer rings are directly hit, the ring wall may be inclined. When the inclination is corrected, a gap will be formed between the ring wall and the soil, and contact seepage will occur during the water infiltration process, which will affect the measurement of the soil infiltration rate. Accuracy

[0005] 3. The influence of evaporation on infiltration flow measurement is not considered

During the field seepage test, due to the large liquid surface area of ​​the inner and outer ring stable water levels, ignoring the influence of evaporation will lead to a larger infiltration rate

[0006] 4. Low accuracy of infiltration measurement

The traditional single-ring or double-ring method uses a large-caliber Martens bottle to supply water or directly pours water into the ring. The volume error of the infiltration water measured by this method is very large, and the calculated infiltration rate deviates greatly from the real value.

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