Static sounding type deep soil sampler

Abstract

The invention provides a soil sampler which can take out a soil sample buried in the deep underground rapidly and is combined with a static sounding injection device under the condition that hole drilling is not carried out. A static sounding type deep soil sampler comprises a shell (6), a sampling barrel (8), a soil expanding cone head (10), a main bearing shaft (4), an elastic ring (9), a steel piece (5), an unlocking component and other structures. The main bearing shaft (4) is provided with an annular limiting groove (12). A self-locking mechanism is formed by the annular limiting groove (12), the steel piece (5) and the elastic ring (9). The soil sampler is suitable for soft soil, generalized clay, floury soil and non-density sandy soil. Compared with traditional hole drilling and sampling, the static sounding type deep soil sampler has the advantages of being simple in structure, convenient to use, rapid, labor-saved and low in cost. The disturbance on the soil sample by the water pressure is greatly lowered when working is carried out below the underground water level, and the soil sampling success rate and the quality of the soil sample can be increased.

Description

technical field [0001] The invention belongs to the technical field of soil fetching devices, and in particular relates to a device for taking deep underground soil samples used in combination with static penetrating equipment. Background technique [0002] 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 various types, which are applicable to various types of soil bodies. In addition to taking samples in ground engineering geological surveying and mapping surveys and pit exploration projects, the existing domestic earth extractors are mainly used in drilling. For the deep underground soil, it is necessary to use suitable drilling tools and drilling methods to drill holes. After reaching the sampling position, take out the drill bit and...

AI Technical Summary

Problems solved by technology

[0005] 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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