Tunnel surrounding rock displacement-stress-fracture state integrated testing device and method
A technology for testing equipment and surrounding rock, which is applied in mining equipment, surveying, earthwork drilling and mining, etc., and can solve the problem that drilling cannot realize continuous monitoring of multiple characteristic factors
Pending Publication Date: 2021-05-18
CHINA UNIV OF MINING & TECH +1
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Problems solved by technology
[0004] Technical problem: The purpose of the present invention is to solve the inadequacy that a current drilling hole cannot realize the continuous monitoring of multiple characteristic factors, and provide a method to realize the monitoring of surrounding rock displacement, stress and fracture state, which has a simple structure, convenient operation, accurate testing, Easy to popularize and not easily affected by the site environment, a multi-purpose tunnel surrounding rock displacement-stress-crack state integrated testing device and method
Method used
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Embodiment Construction
[0031] An embodiment of the invention will be further described below in conjunction with the accompanying drawings:
[0032] Such as figure 1 and Figure 6 As shown, the roadway surrounding rock displacement-stress-rupture state integrated testing device of the present invention comprises an inflatable rubber airbag 25 and a fixing plate 20 of a columnar structure, the front end of the inflatable rubber airbag 25 is an arc surface, and the tail end is provided with a There are intake valve 22 and exhaust valve 23, and the expansion rubber airbag 25 only increases the radial dimension and does not increase the length dimension during the blowing and expansion process; Copy the fractured form to truly reflect the fractured state of the surrounding rock 1 and the printed layer 24 of the size of the broken area. The outer diameter of the inflatable rubber airbag 25 is about 0.3 to 0.6 times the inner diameter of the borehole. The length of 25 remains unchanged, and the diameter...
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The invention provides a tunnel surrounding rock displacement-stress-fracture state integrated testing device and method, and is suitable for underground engineering. The device comprises an expansion rubber air bag and a fixing plate, wherein the front end of the expansion rubber air bag is a cambered surface; the tail end of the expansion rubber air bag is provided with an air inlet valve and an air outlet valve; a plurality of groups of supporting and limiting devices are arranged on the middle section of the expansion rubber air bag at intervals; the tail end of the expansion rubber air bag is sleeved with a directional sleeve; four directional rulers are arranged on the side wall of the directional sleeve at equal included angles; the front end of the directional sleeve is sleeved with a protective sleeve used for being fixed in a drill hole; the tail end of the protective sleeve is provided with a protective sleeve chassis; each group of supporting and limiting devices is a rigid supporting ring; two limiting claws in the same direction are arranged in front of and behind each rigid supporting ring respectively; and each limiting claw extends out of the drill hole through a thin steel wire rope to be connected with a gravity suspension device to tension the limiting claw through gravity. The device is simple in structure, convenient to operate and accurate in testing, and one hole has multiple purposes.
Description
technical field [0001] The present invention relates to a test device and method, and is especially suitable for a roadway surrounding rock displacement-stress-crack state integrated test device and method for mine roadways, tunnels and other underground projects, belonging to roadway, tunnel and other underground engineering surrounding rock deformation monitoring field. Background technique [0002] With the continuous increase of the mining depth of coal mines, metal and non-ferrous metal mines, the large-scale construction of tunnel projects such as roads, railways, water conservancy and hydropower, etc., especially after deep mining, the roadways are increasingly affected by high ground stress, high temperature, high osmotic pressure and mining disturbance. In order to prevent disasters such as roof fall and rock burst, it is urgent to make a reasonable evaluation of the safety and stability of the roadway surrounding rock. Surrounding rock drilling is usually carried ...
Claims
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IPC IPC(8): E21F17/18E21F17/00E21B47/06E21B47/00
CPCE21F17/18E21F17/185E21F17/00E21B47/00E21B47/06
Inventor 孟庆彬孙稳申世豹赵亚伟丁立王明辉吴延成李培帅杨东起王杰
Owner CHINA UNIV OF MINING & TECH