Device for protecting damageable undisturbed soil sample

Abstract

The invention discloses a device for protecting a damageable undisturbed soil sample. The device comprises a portable suitcase, partition plates and soil sample cylinder sub-packaging areas, wherein the portable suitcase comprises a cover plate and a box body with an opening in the top; one side of the cover plate is movably connected to one side of the opening of the box body through a cover plate rotating shaft, and a plurality of cover plate buckles are respectively arranged on the rest of non-fixed sides of the cover plate; box body buckles used in cooperation are arranged in the opening of the box body, which is corresponding to the plurality of cover plate buckles; a concave handle is arranged in the middle of the cover plate; and the two partition plates which are perpendicular to each other and fixed are arranged in the box body, the box body is divided into four soil sample cylinder sub-packaging areas, and each soil sample cylinder sub-packaging area is used for placing one soil sample cylinder. According to the device, the stress characteristics of springs are fully utilized, and the pre-constraining force is applied to each soil sample cylinder through the springs fixedto the upper side, the lower side and the periphery of the soil sample cylinder, so that the soil sample cylinder can return to the original position in a short time when vibration is generated, theshaking amplitude is greatly reduced, and the purposes of protecting the damageable soil sample and improving the success rate of soil sample collection through damping are achieved.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering investigation, and specifically relates to a device for protecting undisturbed soil samples, which is used to avoid damage to fragile undisturbed soil samples due to vehicle vibration and manual handling during transportation, and is convenient for installation, disassembly and handling and stacking. Background technique [0002] In the process of geotechnical engineering investigation of various construction sites, it is necessary to take undisturbed soil samples of the foundation soil layer for indoor tests to obtain its mechanical parameters for design and construction. However, the lithology of strata varies greatly in various regions of my country, and the degree of difficulty in taking undisturbed soil samples is not the same, especially in northern Shaanxi, Ordos, Xinjiang, Gansu and other regions, due to the special paleoclimate environment and Geological origin, the foundation soil...

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Problems solved by technology

[0003] ①This kind of soil is easily damaged due to vehicle vibration and manual handling during transportation, which often results in unqualified soil test, resulting in time-consuming and expensive sampling of a large number of repeated trips to and from the construction site, delaying the construction period

[0004] ②The boxing and shock-absorbing measures of conventional undisturbed soil samples are cumbersome, time-consuming and labor-intensive, and the shock-absorbing effect is not ideal, and the installation, handling and disassembly processes are time-consuming and labor-intensive

[0005] ③ Although the establishment of an on-site geotechnical laboratory can ensure the validity of geotechnical test data, the investment is relatively large. Considering factors such as relatively small investment in engineering survey and short construction period requirements, this method is not suitable for survey work on most sites. Reality

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