Waste rock blocking device and method used for high-dipping coalface

Abstract

Provided are a waste rock blocking device and a method used for a high-dipping coalface. The waste rock blocking device used for the high-dipping coalface comprises a waste rock blocking protective device and a sidewalk telescopic waste rock blocking plate, wherein the waste rock blocking protective device is connected with a front probing beam of a high-dipping coalface hydraulic support in a hinged mode; the sidewalk telescopic waste rock blocking plate is arranged on a supporting beam of the high-dipping coalface hydraulic support; and a door type waste rock blocking plate is installed on a bottom seat of the high-dipping coalface hydraulic support of the inner side of the sidewalk telescopic waste rock blocking plate. Due to utilization of a combination of methods that a rigid waste rock blocking protective net and a flexible waste rock blocking protective net are installed on the front probing beam of the hydraulic support in an alternating mode, the telescopic sidewalk waste rock blocking plate is installed on the supporting beam of the hydraulic support, and the door type waste rock blocking plate is installed on the bottom seat of the support, three aspects of functions that the high-dipping coalface prevents waste rock above a motor way from splashing, the motor way and a sidewalk are separated from each other, and working staff in the sidewalk are not injured by being smashed are achieved. The whole high-dipping coalface is ensured to achieve a very good waste rock blocking effect. The waste rock blocking device and the method used for the high-dipping coalface are simple in structure, convenient to operate, safe in protection and good in effect.

Description

technical field [0001] The invention relates to a gangue-retaining device and method for a coal mining face, in particular to a gangue-retaining device and a method for a steeply inclined coal mining face which is suitable for improving the effect of retaining gangue underground in a coal mine. Background technique [0002] Coal mining under the condition of steeply inclined working face, during the whole production process, the coal and rock mass cut by the shearer will accelerate down or roll on the scraper conveyor along the inclination direction of the working face, and gangue will appear on the cover plate above the sidewalk. The gangue on the machine way is easy to cross each other and the gangue flies into the sidewalk, which poses a great threat to the safety of the staff and equipment on the working face. [0003] In order to ensure the safe and normal operation of the personnel and equipment on the working face, according to the actual situation of the specific wor...

AI Technical Summary

Problems solved by technology

The rigid gangue-blocking method has a good blocking effect, is conducive to ventilation, and the operator can obtain a better line of sight, but because the rigid gangue-blocking protective net has poor slowing ability when it encounters a large piece of coal gangue, it is easy to cause deformation and damage to the protective net; flexible gangue-blocking net The protective net can effectively block and alleviate the impact of gangue blocks, but due to the large area (the grid is denser), it affects the ventilation of the working face and the sight of the workers, and there is no suitable gangue blocking device between the machine road and the sidewalk and Can only rely on the support beam to ensure the safety of the workers on the top, and there is no protection for the side of the gangue

[0004] To sum up, at present, the method of retaining gangue in the steeply inclined coal mining face has a single use, which cannot provide comprehensive protection for the entire working face and has a poor retaining effect.

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