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Through hole annular strain measuring device in static crushing process

A hoop strain and static crushing technology, applied in the direction of mechanical solid deformation measurement, etc., can solve the problems of lack of effective measurement devices for through holes, etc., and achieve the effects of large measurement results, reasonable design, and simple structure

Active Publication Date: 2018-11-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is still a lack of an effective measurement device for the circumferential strain of the through hole during the static crushing process.

Method used

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  • Through hole annular strain measuring device in static crushing process
  • Through hole annular strain measuring device in static crushing process
  • Through hole annular strain measuring device in static crushing process

Examples

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0020] see Figure 1-4 Description of this embodiment, a measuring device for the circumferential strain of a through hole in a static crushing process, which includes a sensor and a metal sheet 1, the metal sheet 1 is arc-shaped, and the radius of the arc on the outer surface of the metal sheet 1 is the same as that of the blast hole 4 The radii are equal, the height of the metal sheet 1 is higher than the height of the blast hole 4, and the sensor includes a dial gauge 2 and a dial gauge base 3, and the dial gauge 2 is connected with the dial gauge base 3, and the dial gauge The base 3 contains magnets, and the circular arc convex surface 8 of the metal sheet 1 is closely bonded to the wall of the blast hole 4, so that the metal sheet 1 penetrates the blast hole 4, and the met...

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Abstract

The invention provides a through hole annular strain measuring device in a static crushing process, belongs to the technical field of static crushing rock or concrete dismounting, particularly relatesto a measuring device for through hole annular strain in the static crushing process. The problem that the measuring result is too great due to reaction heat release of static crushing agent is solved. The through hole annular strain measuring device comprises a sensor and a metal sheet. The through hole annular strain measuring device is mainly used for measuring the through hole annular strainin the static crushing process.

Description

technical field [0001] The invention belongs to the technical field of static crushing and demolition of rocks or concrete, and in particular relates to a measuring device for the circumferential strain of a through hole during the static crushing process. Background technique [0002] Static crushing technology is a method of breaking or cutting rocks or concrete without vibration and noise by setting blast holes inside rocks or concrete, filling static crushing agents and expanding them. [0003] Using the hydration reaction of the static blasting agent installed in the blast hole, the agent is deformed to produce volume expansion, and the expansion pressure is applied to the hole wall slowly and quietly. When the tensile stress caused by the radial pressure in the tangential direction of the hole wall is greater than the tensile strength of the crushed body, the object is broken. Static blasting construction procedures are generally: blasting structure investigation → bl...

Claims

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Application Information

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IPC IPC(8): G01B5/30
CPCG01B5/30
Inventor 郑文忠侯晓萌李瑞森徐笠博王英
Owner HARBIN INST OF TECH
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