Portable extremely-soft coal rock compaction type sample manufacturing device and manufacturing method

Abstract

The invention discloses a portable extremely-soft coal rock compaction type sample manufacturing device and manufacturing method. The portable extremely-soft coal rock compaction type sample manufacturing device comprises a sample preparation system, a demolding system, a servo testing machine and a control system. The sample preparation system comprises a thin-wall tubular sample preparation device and accessories thereof, the accessories are a convex columnar base and a cake-shaped pressure head, and the assembly form of the sample preparation system is as follows: sample ingredients are pressed and formed in the sample preparation device through the base and the pressure head under the action of quantitative load. The demolding system comprises a tubular demolding cavity, a T-shaped dowel bar and a cake-shaped pressure head, and the assembly form of the demolding system is as follows: a sample preparation device filled with a sample is arranged on the tubular demolding cavity, pressure is transmitted to the top end of the sample from top to bottom through a testing machine, the T-shaped dowel bar and the cake-shaped pressure head, and the sample is pressed at a constant speed. The sample preparation device is simple in structure, convenient to machine and low in cost, the sample preparation method is simple and efficient, the success rate of preparation of the extremely-soft coal rock similar material sample can be effectively increased, and meanwhile the problem that the extremely-soft coal rock sample prepared in a laboratory is poor in uniformity and repeatability is solved.

Description

Technical field [0001] The present invention relates to production devices and methods for laboratory coal rock samples in the field of mining and geotechnical engineering, and more particularly to an easy-to-instant soft coal rock compact specimen production device and production method. Background technique [0002] The key basic work of similar simulation test research in the laboratory is to carry out the development of similar material samples and mechanical parameters. The production quality of similar material samples is related to whether the mechanical parameters can accurately simulate the mechanical properties of the original rock formation. At present, there is a very low strength of the coal rock, due to the extremely low strength of the coalstone material (about 0 to 5 MPa), and the texture is loose and broken, the traditional mold and production method are used to produce a very soft coal rock specimen. The following major problems: (1) Method of manual mason mater...

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Problems solved by technology

[0003] In order to solve the above-mentioned three major technical problems existing in the production of existing ultra-soft coal rock samples, the present invention firstly provides a portable ultra-soft coal rock compaction type sample manufacturing device, and secondly designs a set of using the above-mentioned device. Preparation method of extremely soft coal rock sample

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