Continuous sampling spiral undisturbed soil sampler

Abstract

The invention discloses a continuous sampling spiral undisturbed soil sampler. The sampler comprises an outer barrel comprising a barrel body and a screw blade arranged on the outer wall of the barrel body, the lower end opening of the barrel body is provided with a cutter; a sampling barrel coaxially arranged with the outer barrel, the sampling barrel relative to the outer barrel is capable of rotating freely, and the lower end opening of the sampling barrel is a soil sample inlet; a locking mechanism arranged on the outer barrel and used for locking the sampling barrel in the outer barrel; a compression bar arranged on the top of the sampling barrel, the compression bar and the sampling barrel rotate synchronously; a driving mechanism, the driving mechanism is used for driving the outer barrel to rotate, wherein when the outer barrel rotates, the cutter of the outer barrel is used for cutting clay to form a cylindrical soil sample, the sampling barrel is used for containing the cylindrical soil sample and when the outer barrel rotates, the screw blade excavates to deeper clay. The continuous sampling spiral undisturbed soil sampler is simple in structure, convenient to operate, capable of sampling continuously without disturbance and used for measuring a series of physicochemical properties and indexes of the physicochemical properties including the moisture content, the permeability coefficient, the coefficient of compressibility and the shear strength of the undisturbed soil sample by experiments.

Description

technical field [0001] The invention relates to a spiral undisturbed soil sampler for continuous sampling. Background technique [0002] Soil environmental medium is the material basis for human survival, providing people with food continuously, and then maintaining the sustainable and healthy development of human society. Therefore, long-term monitoring and experimental analysis of soil environmental media are very important. The commonly used technical means is to collect a certain amount of soil samples for laboratory component identification and correlation analysis of harmful components to determine soil fertility and pollution degree. . [0003] At present, there are many types and different forms of soil samplers, but it is difficult to sample undisturbed soil. Even if the undisturbed soil sampling can be successfully achieved, the soil is easily broken during the sampling process, and the samples obtained later are divided into different parts. A series of problems...

AI Technical Summary

Problems solved by technology

[0003] At present, there are various types and forms of soil samplers, but it is difficult to sample the undisturbed soil. Even if the undisturbed soil can be successfully sampled, the soil is easily broken during the sampling process, and the samples obtained later A series of problems such as unclear layers and difficult to distinguish

[0004] In particular, the use of some samplers may disturb the original soil structure of the sampling point, which will cause each layer of soil samples to be mixed with impurity soil from other depths, affecting the authenticity and accuracy of the subsequent soil analysis results.

[0005] In addition, the sampler generally does not have the function of measuring the mining depth of soil samples at the same time, and it needs to use a separate scale for measurement. Such intermittent sampling not only prolongs the sampling time and affects the sampling efficiency, but also easily causes the upper soil sample to be damaged during the measurement process. Overturned to the bottom of the mining hole, destroying the purity of the sample

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