Pipe type side opening opening-closing soft soil taking device and soil taking method of soil taking device

Abstract

The invention relates to a soil taking device and a soil taking method and belongs to the field of geotechnical engineering reconnaissance in civil engineering. The pipe type side opening opening-closing soft soil taking device comprises a drill bit part and a pipe body part, wherein the pipe body part is in a multi-section combined type inner and outer sleeve structure and comprises an inner pipe and an outer pipe, a plurality of transverse partition plates are fixedly arranged in an inner cavity of the inner pipe at equal intervals, the inner cavity of the inner pipe is divided into a plurality of cavities with the same volume by the transverse partition plates, rectangular pipe wall side openings are symmetrically arranged at two sides of the pipe wall arranged at the upper part of each cavity, and the two sides of the pipe wall of the outer pipe are provided with outer pipe wall side openings with the same shape and the same size as rectangular pipe wall side openings arranged on the inner pipe. The flowability of soil cement just subjected to stirring and the cutting effect of a reverse blade arranged at the lower side of the outer pipe opening are fully utilized, a side surface soil feeding mode is adopted, the obtaining of all soil samples in the target depth range every 10 to 20cm can be realized in one step, in addition, the depth of the obtained soil sample is accurately determined, and the defects that when the soil feeding from the lower end is adopted, the sampling rate is not high, and the thinner soil layer can be easily missed are overcome.

Description

technical field [0001] The invention relates to a soil-taking method of a soil-taking device, which belongs to the field of geotechnical engineering investigation in civil engineering. Background technique [0002] What the existing soil-taking device adopted is a cylindrical soil-taking device, adopts static pressure or hammering method. The soil-taking device adopts the soil-feeding method from the lower end. When the soil-taking device is pressed down, the soil enters the soil-taking device from the lower opening of the soil-taking device. The sampling rate of this soil-taking method is not high. Due to the relative sliding of the soil sample and the soil-taking device, It is difficult to determine the actual depth of the soil samples taken. At the same time, the height of the existing soil fetching device is generally less than 50cm, and only one soil sample can be taken at a time. It is impossible to collect soil samples in the entire depth range at one time, and accur...

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Problems solved by technology

The soil-taking device adopts the soil-feeding method from the lower end. When the soil-taking device is pressed down, the soil enters the soil-taking device from the lower opening of the soil-taking device. The sampling rate of this soil-taking method is not high. Due to the relative sliding of the soil sample and the soil-taking device, Difficulty determining the actual depth of the soil sample taken

At the same time, the height of the existing soil fetching device is generally less than 50cm, and only one soil sample can be taken at a time, and it is impossible to collect soil samples in the entire depth range at one time, and accurately determine its depth, and it is easy to miss the weak interlayer of soil

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