Portable detachable open soil sampler suitable for silt soft soil

Abstract

The invention provides a portable detachable open soil sampler suitable for silt soft soil. The soil sampler comprises a soil sampling barrel and a rectangular pull rod, the soil sampling barrel is ofa rectangular structure and comprises a front plate, a rear plate, a left plate and a right plate, the front plate comprises an inner plate, an outer plate and two triangular convex blocks, areas above and below the two convex blocks form a rotating area, the rear plate and the front plate are identical in structure, a sliding groove is formed in the bottom of the inner wall of each of the frontplate and the rear plate, a clamping groove is formed in the bottom of each of the left plate and the right plate, the two clamping grooves and the two sliding grooves surround to form a rectangle, the pull rod is arranged between the two convex blocks and can rotate in the rotating area, the lower side of the pull rod is connected with the sliding rod, a roller is fixed in one clamping groove, athin film is wound on the roller, the end head of the thin film is fixed on a sliding rod, the sliding rod is enabled to slide from one end of one sliding groove to the other end of the same by rotating the pull rod, and the sliding rod drives the thin film to seal the lower port of the soil sampling barrel. The soil sampler has the advantages that integration of sampling and sample keeping is realized, sampling secondary disturbance is avoided, and sampling ratio and sampling quality are improved.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a portable and detachable open soil fetcher suitable for silt soft soil. Background technique [0002] Soft soil is a kind of soil with extremely poor engineering properties due to its high water content, strong compressibility, low bearing capacity, and low shear strength. In the process of a large number of urban underground constructions, how to deal with various geological problems caused by soft soil is a A widely studied subject. Soft soil is often distributed on geological bodies such as river alluvial plains, and these plain areas are also the first choice for human living, so in the process of engineering construction, the impact of soft soil on construction must always be considered, so a correct understanding of soft soil nature becomes very important. In the method of studying soil properties, the most reliable method is field test and indoor test. ...

AI Technical Summary

Problems solved by technology

At present, soft soil sampling tools generally have problems such as low sampling quality, large disturbance, and not easy to carry. After sampling, rough twisting or pulling off is often used to separate the soil sample from the subsoil. The soil is very easy to fall off under the action of gravity, resulting in sampling failure; after the soil sample is raised to the surface, the soil is taken out of the sampler by using more thrust, which will cause secondary disturbance of the soil sample and greatly reduce the sampling of the soil sample quality

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