A cylinder infiltrator for measuring saturated hydraulic conductivity of undisturbed soil and its measuring method

Abstract

The invention discloses a cylinder infiltration instrument for measuring the saturated hydraulic conductivity of undisturbed soil and a measuring method thereof. The cylinder infiltration instrument includes a cylinder, a top plate, a partition, an exhaust pipe and a water outlet pipe, and the top plate is sealed and installed on the cylinder. On the top of one end of the cylinder, the partition is sealed and installed on the upper part of the other end of the cylinder. One end of the exhaust pipe is pierced on the top plate, and the other end of the exhaust pipe is connected to the partition. There is a vent hole on the exhaust pipe, and the outlet pipe runs through Installed on the partition, the nozzle of the exhaust pipe is equipped with an exhaust valve, the nozzle of the outlet pipe is installed with a water stop valve, the top plate is equipped with a water inlet and a rubber plug, and the bottom of the cylinder is installed with a water-permeable pad. There is a scale on the side wall of the cylinder. The infiltration meter has a simple structure and can quickly and accurately measure the saturated hydraulic conductivity of the undisturbed soil, so as to solve the problems of cumbersome operation and low accuracy of the existing hydraulic conductivity measurement devices. The calculation results of the method are not disturbed by too many factors, and avoid the mixing of various data to cause the hydraulic conductivity K s The phenomenon that the accuracy deviation of the calculation results is too large.

Description

technical field [0001] The invention relates to the technical field of soil hydrodynamic parameter measurement, in particular to a cylinder infiltrator for measuring the saturated hydraulic conductivity of undisturbed soil and a measuring method thereof. Background technique [0002] Soil infiltration is an inherent property of soil, which is closely related to soil erosion, soil erosion, crop irrigation management, and solute transport. Many scholars believe that the measurement of soil infiltration performance is an indicator of soil properties, soil saturated hydraulic conductivity K s It is not only a quantitative index reflecting the soil water permeability, but also an essential physical parameter in seepage calculation. Usually K s It cannot be obtained by calculation, but can only be determined by experiment. The measurement methods can be divided into two categories: indoor test and field test. The indoor test is simple and easy to do, but due to the unavoidable ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a cylinder infiltrator for measuring the saturated hydraulic conductivity of undisturbed soil and its measuring method, which can simply, quickly and accurately measure the saturated hydraulic conductivity of undisturbed soil, so as to solve the problem of existing on-site measurement of hydraulic conductivity. The operation of the rate device is cumbersome and the accuracy is not high

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