Square box-type undisturbed soil sampling device

Abstract

The invention discloses a square box-type undisturbed soil sampling device which comprises a circular cutter guiding base, an upper cover plate and a circular cutter, wherein the circular cutter guiding base is arranged as a cuboid with a circular cutter guiding slot which penetrates up and down and is formed at the center of the upper end face; supporting rods are inserted into four corners of the circular cutter guiding base from top to bottom; the supporting rods include an upper supporting rod and a lower supporting rod; the upper supporting rod is arranged as a cylinder with a 45-degree slope formed at the lower end; the lower supporting rod is arranged as the cylinder with the 45-degree slope formed at the upper end and a sharp corner formed at the lower end; the upper supporting rod and the lower supporting rod are foldably hidden in the circular cutter guiding base; the upper cover plate is arranged on the circular cutter guiding base through a mounting bolt. The upper supporting rod and the lower supporting rod of the square box-type undisturbed soil sampling device are spliced into the circular cutter guiding base at a right-angle; the upper supporting rod and the lower supporting rod can be spliced into the cylinder which is used as a guide rod of the circular cutter guiding base; the existence of the circular cutter guiding base can guarantee the consistency of the stressed direction of the circular cutter and the soil sampling becomes convenient.

Description

technical field [0001] The invention relates to a soil sample extraction technology, in particular to a square box type undisturbed soil sampling device. Background technique [0002] In the traditional soil sampling, first select the location of excavating the soil profile in the field, then excavate the soil profile, and sample in layers according to the level of the profile. Put the ring cutter holder on the ring cutter of known weight, press the edge of the ring cutter vertically downward into the soil until the ring cutter barrel is full of samples, then use the soil cutter to cut the soil around the ring cutter, and take out the filled sample. For the ring knife of soil, cut off the excess soil at both ends of the ring knife, and wipe off the soil outside the ring knife. Immediately cover both ends of the ring knife to prevent water from evaporating, then weigh and record. The process of capping the two ends of the ring knife is not easy, and it is easy to cause inter...

AI Technical Summary

Problems solved by technology

The process of capping the two ends of the ring knife is not easy, and it is easy to cause interference to the soil sample, and it is easy to separate during subsequent transportation;

[0003] Generally, when sampling in the field, it is generally not suitable to carry too many and heavy tools, so it is very important to set up a portable sampling equipment; and when the general ring knife is pressed into the soil, it needs manual support, and then uses a hammer to strike. In this project It is difficult to maintain the consistency of the force direction of the ring knife, which will cause the sampled soil to fail to meet the requirements, so it is very important to maintain the consistency of the force direction of the ring knife

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