Device and method for testing tensile strength of mine filling body

A tensile strength, mine filling technology, applied in the direction of measuring device, strength characteristics, using stable tension/pressure to test the strength of materials, etc., can solve problems such as end failure and eccentricity of the test piece

Active Publication Date: 2020-12-11
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a mine filling body tensile strength testing device and method, which can effectively solve the problems of end damage and specimen eccentricity in conventional tensile strength testing

Method used

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  • Device and method for testing tensile strength of mine filling body
  • Device and method for testing tensile strength of mine filling body
  • Device and method for testing tensile strength of mine filling body

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Embodiment Construction

[0042] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a mine filling body tensile strength testing device and method, and relates to the technical field of filling body tensile strength testing. The mine filling body tensile strength testing device provided by the invention comprises an upper bracket and a lower bracket which are sleeved with each other; a stretching space for stretching a test piece is formed between the bottom of the upper bracket and the top of the lower bracket; accommodating spaces for accommodating test piece ends are formed between the top of the upper bracket and the top of the lower bracket as wellas between the bottom of the upper bracket and the bottom of the lower bracket, and the height of the accommodating spaces is greater than that of the test piece ends; and limiting structures are arranged at the top of the lower bracket and the bottom of the upper bracket and used for being matched with the ends of the test piece so as to prevent the ends of the test piece from rotating relativeto the upper bracket and the lower bracket. The mine filling body tensile strength testing device provided by the invention can effectively solve the problems of end damage and test piece eccentricityin the conventional tensile strength test.

Description

technical field [0001] The invention relates to the technical field of testing the tensile strength of a filling body, in particular to a device and method for testing the tensile strength of a mine filling body. Background technique [0002] The filling mining method has been widely used at home and abroad because of its advantages of controlling ground pressure and reducing surface solid waste discharge. The strength of the filling body is a key parameter of mine filling, especially in down-fill mining, where personnel and equipment work under the false roof of the filling body, and the stability of the filling body directly affects the safety of personnel and equipment in the stope. Therefore, the determination of the tensile strength of the filling body plays an important role in the rational design of the filling body parameters. [0003] At present, there are no clear norms and standards for the compressive strength test of filling bodies. The test methods in rock and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/04
CPCG01N3/04G01N3/08G01N2203/0017G01N2203/0019G01N2203/0435
Inventor 郭利杰陈鑫政魏晓明张雷
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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