Portable shallow soft soil original state sampling device and sampling method

Abstract

The invention discloses a portable shallow soft soil original state sampling device and a sampling method. A solution is provided for solving the problems that soft soil with a high water content is likely to fall along the inner wall of a sampler, an original state soil column is easily disturbed in repairing, separating and post-treating processes, and the inner cavity of the sampler is difficult to clean and the like. The sampling device comprises the sampler, a positioner and a separator. Smooth sampling is realized through a sampling rod, a steering base, a force transfer base and a sampling barrel; a negative pressure is generated in the inner cavity of the force transfer base by virtue of a piston and a baffle plate, so that a soil sample is prevented from falling. By opening out a liner pipe and the separator, the soil column is repaired, separated and packaged. The method comprises the following steps: removing miscellaneous soil in the surface layer, assembling the sampling device, and pressing the sampler into a specific depth; then lifting up the sampling rod to close the inner cavity of the force transfer seat; and screwing the sampler out, detaching the sampling barrel, pushing the liner pipe out by using the separator and performing packaging with a cover. The device disclosed by the invention is simple in structure, convenient to operate, small in sampling disturbance and high in efficiency.

Description

technical field [0001] The invention relates to a sampling device and a sampling method, in particular to a portable shallow soft soil original sampling device and a sampling method. The utility model belongs to the field of geotechnical engineering, and is suitable for taking undisturbed soil from the surface and shallow layers of geotechnical engineering surveys, and is also suitable for sampling undisturbed shallow layers of undisturbed soil for geotechnical tests and scientific research. Background technique [0002] Undisturbed soil sampling is the basic content of geotechnical engineering investigation and scientific research. Due to its unique structural and physical and mechanical properties, undisturbed soil has become an essential element of scientific research in soil geology, soil mechanics, engineering geology, soil science and other disciplines. Also because of its unique and complex engineering mechanical properties, it is necessary to minimize disturbance du...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, aiming at the shallow soft soil with high water content that is easy to slide down along the inner wall of the sampler when sampling; the undisturbed soil column is easily disturbed in the process of trimming and separation; Clean up issues, propose solutions

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