Horizontal-push vertical layer hydraulic support

Abstract

The invention discloses a horizontal-push vertical layer hydraulic support used for a steeply-inclined coalface of an underground coal mine. The horizontal-push vertical layer hydraulic support comprises a supporting device, a support moving device and a waste stone blocking device, and is characterized in that hydraulic supporting columns forming the supporting device comprise the top supporting columns and the inter-support columns. The hydraulic support is arranged above a coal wall, a worker stands on the coal wall to perform operation, the coal wall can be manually made to have a safe inclination angle, an upper consequent layer and a lower consequent layer are dug in the horizontal direction roughly, and the support is moved in the direction parallel with the consequent layers. The support solves the problem that when a steeply-inclined seam is mined, a bottom plate, on which the worker stands to perform operation, of a fully-mechanized coal mining support slides down easily and injures the worker in an inclined long-wall face, and also solves the problem that because a vertical layer hydraulic support needs to be moved in the downhill direction, the worker needs to climb a vertical ladder in a vertical hole, and potential safety hazards exist. The horizontal-push vertical layer hydraulic support is suitable for a coal seam with the angle of 45 degrees-90 degrees.

Description

technical field [0001] The invention relates to a hydraulic support for a sharply inclined coal mining face under a coal mine. Background technique [0002] Hydraulic support is divided into two categories: fully mechanized mining hydraulic support and sliding roof beam hydraulic support. These two types of hydraulic supports include roof beams, hydraulic props for supporting the roof, and moving cylinders specially used for moving the frames. They are all arranged on the bottom plate along the slope, and the coal wall is in front of it. It is used in gently inclined and inclined working faces. For example, fully mechanized mining hydraulic supports are generally used in working faces with an inclination angle of less than 20°. The chain-suspension hydraulic support (Chinese patent application number ZL200520019152.2), which belongs to the sliding roof hydraulic support category, has a strong adaptability to large-inclination working faces, but it is generally only used at ...

AI Technical Summary

Problems solved by technology

It is for these reasons that for many years people have been mining the steeply inclined thick coal seams with the method of horizontally segmented top coal mining, and the thinner steeply inclined coal seams have to be mined by the old high-drop coal mining method. Therefore, it is not only labor-intensive, but also the coal recovery rate is low. Some thinner steeply inclined coal seams are even simply classified as unminable coal seams and discarded.

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