A multi-round sequential layered memory coal discharge method

Abstract

The present invention relates to a multi-round sequential layered memory coal discharge method, comprising: S1: judging whether the geological information data of the current working face exists in the database, and if so, performing coal topping according to the control parameters corresponding to the current geological information data in the database Mining; if not, execute "step S2-S4"; S2: according to the geological information data of the current working face, set X top-coal transportation time measuring devices in layers from top to bottom at each group of hydraulic supports; X is an integer greater than 1; S3: based on the control module and the top-coal moving time measuring device, the coal discharge time of each layer of each group of hydraulic supports is obtained during the coal discharge process; S4: according to each layer of each group of hydraulic supports Coal discharge time, generate control parameters corresponding to the current geological information data and store them in the database. The invention improves the coal discharging efficiency and the top coal recovery rate, and reduces the labor cost.

Description

technical field [0001] The invention relates to the technical field of top-coal caving, in particular to a multi-round sequential layered memory coal caving method. Background technique [0002] At present, my country has made important breakthroughs in the theoretical research and engineering practice of intelligent mining of thin and medium-thick coal seams, and has also made important progress in the theory of fully mechanized caving mining in thick and extra-thick coal seams. Theoretical research and practice are still progressing slowly. [0003] In order to increase the recovery rate of the top coal, reduce the mixed gangue rate, and minimize the waste of resources, the multi-round sequential coal caving method should be used to mine the top coal in the fully mechanized caving face. Multiple rounds of sequential layered coal caving can make the coal-rock interface uniform, Gentle subsidence, so as to ensure that the gangue is difficult to mix into the top coal, ensure ...

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Problems solved by technology

[0004] However, the coal discharge time of each round generally depends on the experience of the workers on site, and cannot be measured scientifically, which has certain limitations and a low degree of automation; the last round of coal discharge generally uses the amount of gangue to determine whether the coal has been completely discharged, but During the mining process, due to the uncertainty of the flow, gangue will be mixed in the coal and released, resulting in misjudgment, closing the coal discharge port in advance, and reducing the coal discharge rate

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