Dimension and dip angle adjustable type coal mine stope similar model test system and method

A similar model and test system technology, applied in the field of similar model test system in coal mine stope with adjustable size and inclination angle, can solve the problems of inability to simulate, lack of universality, and test error amplification

Active Publication Date: 2016-02-10
CCTEG COAL MINING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, due to the small geometric scale, the test error will be amplified abnormally in the process of test result processing, reducing the similarity and credibility of the test results
In addition, the size of the existing stope rock pressure model test bench is relatively fixed, the model frame cannot be rotated or the rotation angle is insufficient, and it cannot simulate mining conditions su

Method used

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  • Dimension and dip angle adjustable type coal mine stope similar model test system and method
  • Dimension and dip angle adjustable type coal mine stope similar model test system and method
  • Dimension and dip angle adjustable type coal mine stope similar model test system and method

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Embodiment 1

[0051] figure 1 It is a schematic structural view of the size and inclination adjustable type coal mine stope similar model test system in Embodiment 1 of the present invention, as figure 1 As shown, the size and inclination adjustable coal mine stope similar model test system provided by the present invention includes: model bearing frame 1, pressure loading device, model frame rotating device 2, centralized control device and monitoring device;

[0052] The model bearing frame is used to lay similar models in the stope; the centralized control device is used to send pressure control commands to the pressure loading device according to the pressure value set in the test and send rotation control commands to the model frame rotation device according to the inclination value set in the test; The pressure loading device is used to apply pressure to the model bearing frame according to the pressure control command; the model frame rotation device is used to rotate the model beari...

Embodiment 2

[0062] Embodiment 2 is basically the same as Embodiment 1, and its main difference is that if the length of the similar model in the stope in the experimental scheme is small, it is not enough for the accommodating width of the model bearing frame, such as figure 2 As shown, the left and right sides of the model carrying frame are respectively provided with force transmission pads 16, and the force transmission pads 16 are symmetrically distributed along the center line of the model carrying frame 1 to ensure that the laid model body is located in the center of the frame, so that Lay model bodies of different length specifications. The pressure loading device includes a lateral pressure loading device 6 and a top pressure loading device 3 ; the lateral pressure loading device 6 applies a horizontal gradient pressure to the model through a force transmission pad 16 . Since the force transmission pad 16 can be set in the model bearing frame 1, the size of the model bearing fram...

Embodiment 3

[0064] Embodiment 3 is basically the same as Embodiment 1, the main difference is that Embodiment 3 uses the test system in Embodiment 1 to carry out tests on formations with a certain dip angle, while Embodiment 1 is a test on formations with a model dip angle of zero ,Such as image 3 As shown, it is the working state of the test system of the present invention when simulating the inclined formation. In order to simulate the inclined formation, the model frame rotating device 2 drives the model carrying frame 1 to rotate a certain angle, and the rotation limit pin 12 leaves the rotation limit base 13, The rotation limit pin 12 is inserted into the small hole on the rotation limit plate 11 to keep the test system stable, and then a similar model of the stope is laid in the model carrying frame 1, and after the laying is completed, the model carrying frame 1 is turned back to Horizontal position, others are identical with embodiment 1.

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Abstract

The invention relates to a dimension and dip angle adjustable type coal mine stope similar model test system and method. The system comprises a model bearing frame, a pressure loading device, a model frame rotating device, a centralized control device and a monitoring device, wherein the model bearing frame is used for laying a stope similar model; the centralized control device is used for sending a pressure application control instruction to the pressure loading device according to a pressure value set by the test and sending a rotation control instruction to the model frame rotating device according to a dip angle value set by the test; the pressure loading device is used for applying pressure to the model bearing frame according to the pressure application control instruction; the model frame rotating device is used for enabling the model bearing frame to rotate by the set dip angle according to the rotation control instruction; the monitoring device is used for monitoring the state of the stope similar model in an excavation process. With the adoption of the system provided by the invention, the pressure characteristics of a coal working face of different dip angles, different buried depths and different coal seam thicknesses of a coal mine site can be simulated in a laboratory.

Description

technical field [0001] The invention relates to the research field of stope mine pressure, in particular to a coal mine stope similarity model test system and method with adjustable size and inclination angle. Background technique [0002] Coal is China's main energy source and plays an important strategic role in the development of the national economy. At present, the mining depth of China's coal mines is increasing at a rate of 8m-12m per year, and the eastern mines are developing at a rate of 100m-250m every 10 years. With the gradual depletion of shallow coal resources, the mining depth of coal mines has gradually developed from the initial shallow part of 200m-300m to the deep part of 700m-800m, and the mining depth of some coal mines has reached more than 1000m. Depth, the problems faced by deep mining are becoming more and more prominent. Compared with shallow and middle-deep mining, the biggest difficulty in deep coal mine mining is the complex mechanical environm...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 康红普顾金才娄金福丁幸波高富强陈安敏杨景贺贺永胜王东攀孙志勇
Owner CCTEG COAL MINING RES INST
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