High-simulation coal exploitation simulation system

Abstract

The invention discloses a high-simulation coal exploitation simulation system. The high-simulation coal exploitation simulation system comprises a coal mining simulation device and a hydraulic support simulation device located at the rear side of the coal mining simulation device. The hydraulic support simulation device comprises a base plate (1), a top plate (2), a stress meter, a driving device and a baffle plate (3). The top and the bottom of the stress meter are connected with the top plate (2) and the base plate (1) respectively. The upper end of the baffle plate (3) is connected with the rear end of the top plate (2). The angle formed between the baffle plate (3) and the top plate (2) is an obtuse angle. The driving device drives the hydraulic support simulation device to move. The high-simulation coal exploitation simulation system can raise the experiment accuracy, and lowers the work intensity greatly, and experiments are intelligent.

Description

technical field [0001] The invention relates to the field of mining machinery, in particular to a high-simulation coal mining simulation system for simulating on-site coal mining. Background technique [0002] Similar simulation models and devices are used to simulate the excavation process of underground coal seams. By simulating the changes of the coal seam and the rock above the coal seam manually excavated, the changes of the coal seam roof strata during the actual excavation process are estimated, so it is called the similar model. [0003] But there is following defective in the similar model in the prior art: [0004] First of all, the excavation process is manual excavation with thin iron rods. Generally, a certain distance of coal seam (such as about 50mm) is excavated every two hours. Similarity ratio, which means that the coal is pushed forward 5m at a time, which is unscientific), that is, it is excavated at a certain speed, and generally a model needs more than...

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Problems solved by technology

[0004] First of all, the excavation process is manual excavation with thin iron rods. Generally, a certain distance of coal seam (such as about 50mm) is excavated every two hours. Similarity ratio, which means that the coal is pushed forward 5m at a time, which is unscientific), that is, it is excavated at a certain speed, and generally a model needs more than three days and three nights of continuous excavation, which requires the experimenters At night, it needs to be excavated every two hours. An experiment generally requires 3-5 excavators. The workload is very heavy and it is very inconvenient.

[0005] Second, when excavating, because the similar model device is generally 300mm wide, the model in the middle part is relatively hard and cannot be seen clearly, and often digs the wrong roof or bottom plate, etc., which has a great impact on the results of the experiment

[0006] Third, sometimes the model is relatively hard, and it takes a lot of force to dig it out. In the middle part of the model, it even needs to be tapped to move it. This kind of vibration, knocking or unconscious contact with the top plate is equivalent to The impact of large rock burst, so it has a great influence on the results of some experiments on the roof structure

[0007] Finally, the similar simulation mainly studies the stress characteristics of the roof and floor, the collapse characteristics of the roof, etc., but there is no simulation device that can simulate the working face stope support simulation device and its migration and stress monitoring system and method. For the similar simulation experiment The results have a greater impact

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