Soft rock sampling device

Abstract

The invention belongs to the technical fields of geotechnical engineering and geological engineering, relates to a soft rock sampling device, and especially relates to a test device for onsite investigation and sampling of geotechnical engineering. The main body structure of the device includes wheels, a rotating support, a handle, an electrical controller, a connecting wire, a driving motor, a thin walled sampler, a top soil plate, a water discharging hole, a vertical spiral propelling rod, a rack and pinion steering gear, a vehicle frame, a horizontal spiral propelling rod and a precession block. The device has the advantages of reduction of the disturbance to an undisturbed soil sample, realization of the study of the engineering characteristics of a rock mass, according with the engineering practice of the rock mass, increase of the sampling efficiency, realization of sampling and studying at any time, and reduction of the influences of the stress history on the rock sample.

Description

Technical field: [0001] The invention belongs to the technical field of geotechnical engineering and geological engineering, and relates to a soft rock sampling device, in particular to a test device for on-site investigation and sampling of geotechnical engineering. Background technique: [0002] Soft rock refers to low-strength engineering rock mass that undergoes significant deformation under relatively low stress (<25MPa) conditions. Currently there is no special instrument for soft rock sampling. In civil engineering tests, especially for rock mechanics engineering and mining engineering, it is a common method to study the mechanical properties of rock samples through engineering survey technology and sampling technology. The ring knife method is generally used for sampling soil samples, which is easy to operate, but it is generally aimed at soil samples. Through the traditional engineering survey technology through dotting, drilling and sampling, although many met...

AI Technical Summary

Problems solved by technology

But there are also the following disadvantages: 1. The amount of engineering involved and the funds involved are relatively large, and the movement of equipment and equipment that adopts drilling and sampling is relatively cumbersome

Less mobility and flexibility

2. Moreover, the coverage of sampling is relatively thin, and sampling according to the arrangement of survey points is poorly targeted

In the patent application number CN201520903220.5, a hand-press soil fetcher is disclosed, which is convenient for collecting soil samples at different depths. The soil fetcher uses hand pressure to accurately collect soil samples at different depths in the field, and is mainly applicable to the field of agricultural production. The soil in the soft rock is not suitable for the rock field, and manual operation is required, and the structural operation is complicated. Therefore, it is of good social and economic benefit to seek to design a soft rock sampling device

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