Automatic coal discharging control system and method

Abstract

The invention discloses an automatic coal discharging control system and method. The system comprises a plurality of movable top coal conveying and transferring tracking instruments which are uniformly arranged in drilling holes in the coal gangue interface and move along with the coal gangues, a plurality of fixed top coal conveying and transferring tracking instruments which are uniformly fixedto a hydraulic support and are used for acquiring and storing first distance from the movable top coal conveying and transferring instrument close to the hydraulic support to the fixed top coal conveying and transferring tracking instrument and the first distance stored by the movable top coal conveying and transferring instrument close to the hydraulic support, and a central computer for handlingthe first distance and the second distance, acquiring the real-time position information of each movable top coal conveying and transferring tracking instrument, and sending an instruction to controlthe hydraulic support to open or close a coal discharging port based on the real-time position information of each movable top coal conveying and transferring tracking instrument. According to the system and the method, the time that a large number of coal gangues move to the coal discharging port can be determined, so that the time for opening and closing the coal discharging port can be accurately determined, and thus the top coal discharging rate is high, and the gangue containing rate is low.

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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