Rock burst/rock explosion analog simulation energy storage-time tank device
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A technology of impact ground pressure and simulation, applied in the field of geotechnical engineering
Inactive Publication Date: 2015-11-11
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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However, there is currently no equipment that comprehensively considers the above three factors, so the present invention makes a breakthrough in quantitative description and inversion of rockburst / rockburst occurrence process experimental simulation
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specific Embodiment approach 1
[0022] Specific implementation mode one: as figure 1 Shown, a kind of rockburst / rockburst simulation emulation energy storage-time jar device, it comprises lower loading oil cylinder 2, upper pressure sensor 3, lower pressure sensor 4, lower energy storage-time jar 5, lower rigidity spring 6, Lower spring deformation measuring optical coder 7, lower rolling row 8, lower internal displacement rebound timer 9, lower flexible spring 10, coal and rock test piece 11, extensometer 12, lower rigid pressure plate 13, upper energy storage-time tank 14. Long rigid rod 15, short rigid rod 16, 45° chuck 17, screw rod 18, upper loading cylinder 19, upper displacement recorder 20, upper roller 21, upper rigid spring 22, upper spring deformation measuring light Encoder 23, upper internal displacement rebound timer 24, upper flexible spring 25, upper rigid pressure plate 26, lower displacement recorder 27;
[0023]The cross-sections of the lower energy storage-time tank 5 and the upper energ...
specific Embodiment approach 2
[0031] Specific implementation mode two: as figure 1 As shown, the pit for placing the coal rock specimen is circular or square, the diameter of the pit for placing the circular coal rock specimen is φ50 mm, and the length×width of the pit for placing the square coal rock specimen is 50×50 mm. The surface of the groove for placing the coal and rock test piece is flat, forming a close fitting surface with the sample 11, which is used for placing and positioning the coal and rock test piece 11 to prevent eccentric loading.
[0032] The working process is: First, the open-loop unloading makes the upper and lower loading cylinders reset to zero, the lower end of the extensometer 12 is placed in the extensometer placement groove of the lower rigid pressure plate 13, and is consolidated into one body with screws, and the upper and lower ends of the coal and rock specimen 11 are coated with Vaseline, Reduce friction, and the measurement result is more accurate, then put the coal ro...
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Abstract
A rock burst/rock explosion analog simulation energy storage-time tank device belongs to the technical field of geotechnical engineering. By adopting the device, the study on the mechanism of rock burst/rock explosion can have breakthrough, the characteristics of energy and time factors which cause the rock burst are considered, and an elastic energy accumulating process can be recorded, and the time required by elastic energy releasing can be recorded. The lower ends of four long rigid rods and four short rigid rods of an extensometer are respectively connected with a strain gage, the lower ends of the four long rigid rods and the lower ends of the four short rigid rods of the extensometer are respectively fixed into an extensometer placement tank of a lower rigid pressing plate, the upper ends of the four long rigid rods of the extensometer are in contact with a 45-degree chuck arranged at the lower end of the upper rigid pressing plate; screw holes of the side wall of the four short rigid rods of the extensometer are in threaded connection with screws; an upper energy storage-time tank and a lower energy storage-time tank are respectively connected with an upper pressure sensor and a lower pressure sensor, and the upper pressure sensor and the lower pressure sensor are respectively connected with piston rods of an upper load cylinder and a lower load cylinder. The device is used for rock burst/ rock explosion analog simulation experiments.
Description
Technical field [0001] The present invention is the field of geotechnical engineering technology, which is specific to an experimental device that is suitable for indoor research impact ground pressure / rock explosion process, energy quantitative description and mechanism research. Background technique [0002] The impact ground pressure / rock explosion is the sudden destruction of the rock body in the rock project, and it is accompanied by the sudden release of the strain energy in the rock body.This phenomenon contains two core factors, one is a large amount of elastic deformation potential in the volume of coal rocks, and the other is the sudden and violent release of coal rock body elasticity, which eventually leads to bursting and ejection in the disadvantaged area of coal rock body.It often causes severe damage to excavation working surfaces, damage to equipment, and casualties, which has become a worldwide problem in the field of rock underground engineering and rock mechani...
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/307
Inventor 肖福坤刘刚蒋元男迟学海董志玲马红涛申志亮张峰瑞张泽王一斐
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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