Roadway surrounding rock crack propagation and evolution process observation device
A crack propagation and evolution process technology, which is applied in the field of roadway surrounding rock crack propagation and evolution process observation device field, can solve the problem of unable to observe the surrounding rock drilling
Inactive Publication Date: 2016-08-17
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
[0004] Aiming at the above-mentioned technical problems that the surrounding rock drilling cannot be observed due to hole collapse, debris blockage, etc., the present invention proposes an observation device for the crack expansion and evolution process of the surrounding rock of the roadway, which can realize the monitoring of the surrounding rock of the roadway Long-term dynamic observation of the internal crack propagation and its evolution process, and simultaneously record the force of the anchor, which is convenient for analyzing the relationship between the force of the anchor and the crack growth
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[0019] The present invention discloses an observation device for crack propagation and evolution process of roadway surrounding rock. 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 in conjunction with specific embodiments.
[0020] In the present invention, the observation device for the crack expansion and evolution process of the roadway surrounding rock, such as figure 1 As shown, it includes an anchor rod body 1, a casing 3, a direction changing mechanism 4, a crack observation mechanism 5, a camera 6, an LED light source 7, a rubber roller 8, and a fixing mechanism for fixing the anchor rod body 1 and the casing pipe, wherein the anchor rod body 1 and sleeve 3 are made of hollow transparent material, the purpose is to facilitate observation, the end of the anchor rod body 2 extends into the interior of the surrounding rock, and the surrounding is anchored with anc...
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The invention discloses a roadway surrounding rock crack propagation and evolution process observation device. The roadway surrounding rock crack propagation and evolution process observation device comprises a crack observation mechanism, a hollow transparent anchor rod body and a sleeve, wherein the sleeve is arranged in the middle and lower part of the anchor rod body; the crack observation mechanism is positioned in the sleeve; the crack observation mechanism is a cylindrical cavity; LED light sources and cameras are uniformly arranged at intervals on the circumferential surface of the cavity; the cavity is internally provided with a rubber idler wheel for driving the cavity to move up and down; the top and bottom of the cavity are provided with a steering mechanism for driving the crack observation mechanism; a power source and a data storage device are in circuit connection with take-up idler wheels; a pressure sensor is arranged between a gasket and a tray. The observation device is capable of realizing long-term dynamic observation on a roadway surrounding rock internal crack propagation and evolution process, and simultaneously recording the stress condition of the anchor body, thereby being beneficial to analysis on relation between stress and crack propagation of the anchor body.
Description
technical field [0001] The invention relates to the technical field of crack extension observation of roadway surrounding rock, in particular to an observation device for crack propagation and evolution process of roadway surrounding rock. Background technique [0002] Underground mining of coal mines gradually develops to the deep. Under the conditions of high stress, high ground temperature and high karst water pressure in the deep part, the roadway is disturbed by the excavation and the process of advancing the working face. Cracks will gradually open, expand, and penetrate. Understanding the evolution process of internal cracks in the process of surrounding rock failure and instability is of great significance for further revealing the mechanism of surrounding rock failure and instability and determining the scientific support parameters of roadways. [0003] At present, the existing technology mostly uses rock formation observation recorders to observe the cracks in the...
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IPC IPC(8): E21B47/002E21B47/01E21B47/26E21D20/02E21D21/02
CPCE21B47/002E21B47/01E21B47/26E21D20/02E21D21/02
Inventor 谭云亮顾东东臧传伟郭伟耀张强陈永超
Owner SHANDONG UNIV OF SCI & TECH