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Simulation test device for impact damage of bolts under the influence of structural stress

A technology of tectonic stress and impact damage, applied in impact testing, measuring devices, testing of machine/structural components, etc.

Active Publication Date: 2018-07-20
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The laboratory test equipment in the prior art can only simulate the mechanism of rock burst (vertical impact) under the influence of gravity, but cannot simulate the mechanism of rock burst (lateral impact) under the influence of tectonic stress, resulting in inaccurate It reflects the support effect of bolts on surrounding rock when rock burst occurs under complex conditions

Method used

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  • Simulation test device for impact damage of bolts under the influence of structural stress
  • Simulation test device for impact damage of bolts under the influence of structural stress
  • Simulation test device for impact damage of bolts under the influence of structural stress

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Embodiment Construction

[0027] The present invention proposes an impact damage simulation test device for an anchor rod under the influence of structural stress. In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be described in detail below with reference to specific embodiments.

[0028] Combine figure 1 with figure 2 As shown, the impact damage simulation test device of the anchor rod under the influence of the tectonic stress of the present invention specifically includes a hexahedral test piece box, a hexahedral test piece 13, an anchor rod and a loading mechanism. The test piece box is surrounded by a test piece box frame 9, and the anchor rod 33 is fixed in the middle of the test piece 13 by an anchoring agent, and is placed in the test piece box together with the test piece 13. The loading mechanism applies loads to the top, left, right, front and back six surfaces of the test piece box, namely Front and rear, left and...

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Abstract

The invention discloses a simulation test device for impact damage of anchor rods under the influence of structural stress, which solves the technical problem that the test device in the prior art cannot simulate the impact damage of anchor rods under the influence of structural stress. It includes a hexahedron test piece, a test piece box, an anchor rod, and front and rear loading units loaded on the test piece box, left and right loading units and a top loading unit, and the anchor rod is installed in the anchor hole of the test piece, wherein The left loading unit includes an impact weight, a lifting device, a guide rod, an impact base, a tilting rod and a loading device. The vertical stress is provided to the impact weight through the lifting device, and the tilting rod converts the vertical stress into a lateral force of the specimen. The strong spring expands and elongates instantaneously, quickly supplements the load on the test piece, and supplements the energy, simulating the further extrusion work of the external surrounding rock on the coal and rock mass; the burst rock blocks have an impact on the anchor rod, thus simulating the engineering site. Anchor damage by impact.

Description

Technical field [0001] The invention relates to the technical field of determination of the impact damage of an anchor rod in geotechnical engineering, in particular to a simulation test device for the impact damage of an anchor rod under the influence of tectonic stress. Background technique [0002] The application of the pre-tightening force of the bolt and the force after pre-tightening are closely related to the strength of the broken surrounding rock, and the existence of complex surrounding rock environment requires different bolt pre-tightening forces, and the pre-tightening force is too small. In order to improve the anchor strength of the surrounding rock, a larger pre-tightening force may also cause further aggravation of the broken surrounding rock, both of which will cause the failure of the bolt supporting the surrounding rock. Therefore, the application of reasonable bolt pre-tightening force is of great significance to the strengthening of the strength of the brok...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 蒋宇静刘建康王刚王冬冬张学朋栾恒杰王长盛
Owner SHANDONG UNIV OF SCI & TECH
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