An automatic coal discharge control system and method

Abstract

The present invention discloses an automatic coal drawing control system and method. The system includes: a plurality of movable top coal movement trackers, uniformly arranged in a drill hole on a coal-gangue interface and moved with gangue; a plurality of fixed top coal movement trackers, uniformly fixed on a hydraulic support, and configured to obtain and store second distances between the movable top coal movement trackers near the hydraulic support and the fixed top coal movement trackers, and first distances stored by the movable top coal movement trackers near the hydraulic support; and a central computer, configured to process the first distances and the second distances to obtain real-time position information of each movable top coal movement tracker, and send an instruction according to the real-time position information of each movable top coal movement tracker to control the hydraulic support to open or close a coal drawing port. The automatic coal drawing control system and method can determine the time that gangue is rushed into a coal drawing port massively, and thus determine the time for opening or closing the coal drawing port accurately and implement the high top coal mining rate and the low gangue rate.

Description

technical field [0001] The invention relates to the technical field of top coal caving mining in underground coal mines, in particular to an automatic coal caving control system and method. Background technique [0002] At present, in the top-coal caving mining process of underground coal mines, it mainly relies on manual coal caving. Workers rely more on experience and the sound of coal gangue flow to judge whether to terminate coal caving. There is randomness in coal caving operations, which often leads to The coal discharge rate is low and the top coal has a high gangue rate. At the same time, a large amount of dust and gas will be generated during the coal discharge process, which is likely to cause occupational injury to workers. [0003] Based on the above reasons, more and more top coal caving working faces are trying to replace manual coal caving with automatic coal caving control system to realize automatic control of the coal caving process. , optical and acousti...

AI Technical Summary

Problems solved by technology

However, due to the randomness of the gangue impacting the support beams, there are cases where the gangue has already been released without contacting the support, and when there is gangue in the coal seam, it is easy to close the coal discharge port prematurely, resulting in the top coal recovery rate. Lower, higher gangue content

In addition, the light behind the support is weak, coal and gangue are similar in color, and video equipment is often covered by mine dust, which makes the recognition of coal gangue in actual production relatively low. There are great defects and deficiencies in the identification of coal and gangue in different ways

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