Control method and device of multi-hydraulic support and control system of multi-hydraulic support

Abstract

The present invention provides a control method and device for multiple hydraulic supports and a control system for multiple hydraulic supports, including: determining the initial coal discharge time corresponding to the first hydraulic support combination according to the coal mining and discharging parameters corresponding to the first hydraulic support combination; according to the first hydraulic support combination The second coal gangue ratio of the second hydraulic support combination that has put coal stones is corrected for the initial coal discharge time, and the target coal discharge time corresponding to the first hydraulic support combination is obtained; the first hydraulic support combination is controlled to start coal discharge according to the target coal discharge time; according to The first coal gangue ratio of the first hydraulic support combination working face controls the first hydraulic support combination to stop coal discharge. The invention can effectively improve the automation degree of the top coal caving process.

Description

technical field [0001] The invention relates to the technical field of coal and rock identification, in particular to a control method and device for a multi-hydraulic support and a control system for a multi-hydraulic support. Background technique [0002] The main goal of the fully mechanized coal mining process is to collect the coal seam not mined by the shearer by manual or electro-hydraulic control. Under normal circumstances, the approximate thickness of the coal seam in the roadway of the coal mining face can be obtained through mineral geological survey technology. However, since the thickness of the coal seam at the top of the hydraulic support is unknown, it is necessary to judge whether the coal discharge is completed during the falling of the coal seam, that is, whether there is a large area of ​​gangue , this process generally requires on-site manual observation and operation. Due to the dust on the working face of fully mechanized caving is larger than that o...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the approximate thickness of the coal seam in the roadway of the coal mining face can be obtained through mineral geological survey technology. However, since the thickness of the coal seam at the top of the hydraulic support is unknown, it is necessary to judge whether the coal discharge is completed during the falling of the coal seam, that is, whether there is a large area of ​​gangue , this process generally requires on-site manual observation and operation

Due to the dust on the working face of fully mechanized caving is larger than that of fully mechanized mining, the operating environment of coal caving is harsh, and the production site relies on manual visual and auditory observation of the coal gangue caving process, so it is difficult to accurately identify gangue, resulting in low efficiency of fully mechanized caving , and there are many and complex risk factors in the workplace

At present, the automation level of the top coal caving process can only achieve the memory coal caving and timing coal caving operation, and the coal caving operation still relies on manual work, with a low degree of automation

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