System and method for testing aging characteristics of bolt system on basis of creep testing machine

A creep test and test system technology, applied in the direction of applying stable tension/pressure to test material strength, measuring devices, strength characteristics, etc., can solve the problem of insufficient description of the temporal and spatial evolution characteristics of the stress-seepage coupling mechanism, and achieve long-term Stable and significant effects

Active Publication Date: 2017-05-17
ZHONGYUAN ENGINEERING COLLEGE
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing research results are not enough to describe the stress-seepage coupling mechanism and its temporal and spatial evolution characteristics of different anchoring metho

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  • System and method for testing aging characteristics of bolt system on basis of creep testing machine
  • System and method for testing aging characteristics of bolt system on basis of creep testing machine
  • System and method for testing aging characteristics of bolt system on basis of creep testing machine

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Embodiment Construction

[0022] Such as Figure 1 to Figure 6 As shown, a test system based on the aging characteristics of the anchor rod system of a creep testing machine includes a sample preparation device 1, a sample loading device 6 and a strain detection device 4, and the sample preparation device 1 is fixed on a steel frame 5 The sample sample preparation device 1 includes a sample clamp 11, a fixed steel plate 12 and an anchor rod 13, the sample 14 is housed in the sample clamp 11, and the strain gauge 16 is pre-embedded in the sample 14, and the anchor Rod 13 is inserted on sample 14 center line and is connected with fixed steel plate 12; Described sample loading device 6 comprises creep testing machine 61 and pressure conversion device 2, and the base 29 of pressure conversion device 2 is fixed on the bottom of creep testing machine 61. On the workbench 62, the upper part of the pressure conversion device 2 is connected with the indenter 63 of the creep testing machine 61; the anchor rod 13...

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Abstract

The invention discloses a system and a method for testing aging characteristics of a bolt system on the basis of a creep testing machine. The system comprises a sample preparation device, a sample loading device and a strain detection device, wherein the sample preparation device is fixed on a steel frame and comprises a sample fixture, fixed steel plates and bolts, a sample is mounted in the sample fixture, strain gauges are embedded in the sample, and the bolts are inserted in the central line of the sample and connected with the fixed steel plates; the sample loading device comprises the creep testing machine and a pressure switching device, a base of the pressure switching device is fixed on a worktable of the creep testing machine, and the upper part of the pressure switching device is connected with a pressure head of the creep testing machine; the bolts penetrate through holes I of the pressure switching device and connected with the fixed steel plates. The system simulates change of stress and strain of the bolt system along with time in an engineering environment and provides technical support for long stability of a bolt supporting body under the condition of stress-seepage coupling.

Description

technical field [0001] The invention relates to the aging characteristics of a bolt system, in particular to a brand-new testing system and testing method based on a creep testing machine for real-time measurement of the aging characteristics of a bolt system under hydraulic coupling. Background technique [0002] With the increasing number of deep underground projects, deep rocks have been in a complex geological environment of "three highs and one disturbance" for a long time. In the surrounding rock support, the bolt has become an effective means to solve the stability problem of the underground roadway due to its characteristics of small disturbance to the original rock, fast construction speed, and saving engineering materials. With the increase of anchorage time, rock mass anchorage shows obvious creep characteristics during the service period, which poses a huge threat to the safety of deep underground engineering. Aiming at the safety of mining engineering, undergro...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/02
CPCG01N3/02G01N3/08G01N2203/0071
Inventor 胡江春郭福伟张志增王红芳郝育喜徐晓晨杨成林冯金超崔力李渊孙发用吉梦洁
Owner ZHONGYUAN ENGINEERING COLLEGE
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