Static sounding type deep soil samplers

Abstract

The invention provides two static sounding type deep soil samplers. According to each static sounding type deep soil sampler, a main force bearing shaft is arranged inside a cylinder structure composed of a shell, a sampling tube and a tube shoe, the lower end of the main force bearing shaft is connected with a soil expanding cone head, a steel sheet and an electric ring are arranged between the main force bearing shaft and the shell, and the steel sheet and the elastic ring are clamped in an annular groove. According to the first static sounding type deep soil sampler, the annular groove is formed in the inner surface of the shell, an annular limiting groove is formed in the main force bearing shaft, and the main force bearing shaft is sleeved with an unlocking component composed of a thin-walled pipe and a control bar. According to the second static sounding type deep soil sampler, the annular groove is formed in the main force bearing shaft, an annular limiting groove is formed in the inner surface of the shell, and the main force bearing shaft is sleeved with a thin-walled pipe serving as an unlocking component. The two static sounding type deep soil samplers are used in combination with static sounding penetration equipment, a soil sample buried deep underground can be taken out rapidly under the condition that drilling is not needed; the static sounding type deep soil samplers have the advantages of being simple in structure, convenient and fast to use, capable of saving labor and low in cost; the disturbance of the water pressure on the soil sample can be reduced.

Description

technical field [0001] The invention belongs to the technical field of soil fetching devices, and in particular relates to a static penetration penetration deep soil retrieval device which can be used in combination with static penetration penetration equipment to take deep underground soil samples. Background technique [0002] The following discussion of the background of the invention is intended to facilitate an understanding of the invention. It should be understood, however, that the discussion is not an acknowledgment or admission that any of the material referred to was published, known or part of the common general knowledge as at the priority date of the application. [0003] Taking soil samples is an indispensable and regular work in geotechnical engineering investigation, and it provides samples for laboratory tests for quantitative evaluation of geotechnical engineering problems. Now the technology of soil fetching device is relatively mature, and there are var...

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Problems solved by technology

[0006] In order to overcome the shortcomings of static penetration equipment in the domestic prior art that soil samples cannot be taken and drilling sampling costs are high, the speed is slow, the process is complicated, and the environment is greatly affected. It is a soil fetcher that can quickly take out soil samples buried deep underground (0-80m) without drilling. It has the characteristics of simple structure, convenient use, fast and labor-saving, and low cost.

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