In-situ soil sampling device

Abstract

The invention provides an in-situ soil sampling device which comprises a sampling pipe, an inner pipe, a filter cover and a cutting ring; the inner pipe is arranged in the sampling pipe, one end of the sampling pipe is connected with the filter cover, the other end of the sampling pipe is connected with the cutting ring, and the sampling pipe comprises at least one sampling sub-pipe. The problem that in-situ soil sampling positions are difficult to drill is solved; sampling and pulling are easy, samples are stable in the sampling process, cross contamination is not prone to occurring, and costis low.

Description

technical field [0001] The invention relates to the technical field of soil experiment equipment, in particular to an in-situ soil sampling device. Background technique [0002] In situ soil samples play an important role in soil remediation, soil structure research, wetland survey, coastal zone survey, agricultural soil survey, urban environmental survey, environmental monitoring and testing and other fields. In-situ soil sampling technology has always been a difficult point in survey sampling. [0003] The traditional way of collecting in-situ soil samples with a ring cutter soil extractor has the problem of difficulty in drilling, and for deep soil, it is necessary to dig a section before sampling, which wastes a lot of manpower and material resources, and is likely to cause cross-contamination; the auger soil drill will Destroying the original structure of the soil, lifting the soil drill may easily cause problems such as soil falling; the machine mainly uses an excavat...

AI Technical Summary

Problems solved by technology

[0003]The traditional method of collecting in-situ soil samples using a ring cutter soil fetcher has the problem of difficulty in drilling, and for deep soil, it is necessary to dig a section before sampling, which wastes a lot of manpower , material resources, easy to cause cross-contamination; the screw head soil drill will destroy the original structure of the soil, and the lifting of the soil drill will easily cause problems such as soil fall; the machinery mainly uses an excavator to dig a profile, or uses an imported hammer drill to collect soil The cost of both is relatively high, and the requirements for the operator's skills and physical strength are relatively high, and due to the addition of mechanized operations, the work is relatively rough, and the soil columns taken are easy to be squeezed

[0004]The existing in-situ soil sampling device has limitations in the application technical environment and lacks universality; the conical shape of the sampler inlet will destroy the soil physical structure, hard Quality materials will destroy the soil structure, and the friction between the sampler and the soil is increased externally, making it more difficult to drill and extract; there are cleaning blind spots in the cleaning sampler, which affects reuse; most in-situ soil sampling technologies are used in collecting quicksand, wetland Due to the unprotected lower part of the soil, it is difficult for the soil to be brought out of the ground, cross-contamination of each layer of soil, and most of the improved technologies still have not solved the problem of drilling and extraction difficulties

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