Statistic device and method of top coal recovery rate and gangue rate of coal gangue flow

Abstract

The invention discloses a statistic device and method of the top coal recovery rate and the gangue rate of coal gangue flow. The statistic device of the top coal recovery rate and the gangue rate of the coal gangue flow is composed of caving moving base plate, a caving opening size adjusting plate, a caving base plate transmission device, a caving motor, a caving motor fixing mechanism, a caving device, a caving observation window, a coal receiving moving trolley, a coal receiving trolley transmission device, a coal receiving motor, a coal receiving observation window, a coal caving device support, a control device, a left front base plate supporting bearing, a right front base plate supporting wheel, a left back base plate supporting bearing and a right back base plate supporting wheel. In the fully mechanized top coal caving process, statics of top coal recovery rate in the caving process is achieved, the relationship between the top coal recovery rate and the gangue rate of the coalgangue flow can be obtained, and the deep caving law can be exposed.

Description

technical field [0001] The patent of the invention relates to the mining of top-coal caving working faces, especially the mining of middle and low top-coal caving working faces. Background technique [0002] Coal resources are in a dominant position in my country's energy resources and play a pivotal role in the entire national economy. Fully mechanized top-coal caving mining can achieve high yield, high efficiency, and low consumption. It is one of the important mining techniques of coal mining in my country. Therefore, the research and promotion of top-coal caving technology is of great significance to the development of my country's coal industry. During the coal discharge process, the coal discharge control generally adopts the principle of "see gangue and close the window" to control the operation valve to close the coal discharge window to stop coal discharge. The coal loss in this coal discharge process accounts for 64% of the total loss. In order to improve the disc...

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Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a statistical device and method for the discharge rate of top coal and gangue flow, aiming to solve the problem that the discharge rate of top coal in the fully mechanized top coal caving face cannot be predicted at present, and to overcome the current lack of Advanced experimental means and statistical calculation methods realize the shortcomings of the prediction of top coal discharge rate in the process of coal discharge, thus revealing the law of deep coal discharge

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