Hydraulic support for post-rack filling and method of operation and use thereof
A hydraulic support and the technology behind the support, which is applied in the direction of filling, mine roof support, earth square drilling and mining, etc., and can solve the problems of filling slurry and other problems
Inactive Publication Date: 2011-11-30
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
[0003] The present invention aims to solve the problem of filling and running out of the existing hydraulic support, improves the traditional two-column or four-column shielding hydraulic support, and provides a goaf with good sealing and supporting properties, which is suitable for the post-support. Paste filled hydraulic supports
Method used
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[0021] Such as figure 1 As shown in -4, a hydraulic support for post-rack filling includes a two-column or four-column shielded hydraulic support body, and a rear telescopic beam 3 is installed at the rear end of the top beam 1 of the hydraulic support, and the rear telescopic beam 3 passes through the slide The slot is connected with the top beam 1, and is stretched forward and backward by moving the jack 2; there are four baffles arranged under the rear telescopic beam 3, and the four baffles together form a lapped blocking surface; the four baffles are divided into left and right two Each part is composed of an upper baffle 5 and a lower baffle 6, the upper baffle 5 and the lower baffle 6 are connected together by a vertical jack 4, and when the vertical jack 4 is working, the lower baffle 6 shrinks up and down; The connection structure between the upper baffle plate 5 and the lower baffle plate 6 and the hydraulic support is that a slideway 8 is welded on the lower baffle ...
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The invention discloses a hydraulic support for filling after installation and an operating method thereof, and the hydraulic support comprises a two-column or four-column cover type hydraulic support body, wherein a rear telescopic girder is additionally installed on the rear end of the top beam of the hydraulic support, and the rear telescopic girder is connected with the top beam through a chute so as to flex back and forth by virtue of a translational jack; the lower surface of the rear translational jack is provided with four front-rear baffles, and the four front-rear baffles are divided into two parts, namely a left part and a right part; each part is composed of an upper baffle and a lower baffle, and the lower baffle flex up and down through a vertical shifting jack; the left part and right part of a blocking surface and the covered girder side guard plate of the hydraulic support can perform synchronous flexing through a transposed jack, thereby realizing the closure of adjacent supports. The operating method provided by the invention has the advantages of realizing the closure of a goaf and the adjacent supports, and after installation, carrying out paste filling until no spilling exists; when the coal mining machine cuts quire coal so as to cause the support to move forward, the telescopic girder is extended out, and a temporary support can be provided for the goaf.
Description
technical field [0001] The invention relates to a hydraulic support for a coal mining face, in particular to a hydraulic support which has good sealing and supporting properties for a coal mine goaf and satisfies the filling of the goaf with paste (like paste) behind the support. Background technique [0002] At present, my country's new coal mining technology using hydraulic support for backfilling is in the experimental stage. The so-called post-frame filling is to use the hydraulic support as a retaining wall after coal mining to fill the goaf with gangue, water sand or paste, so as to reduce surface subsidence and protect the environment. When the existing hydraulic supports are used to fill the paste after the support, because the gap between adjacent supports is too large, there is a problem of slurry running when filling and mining in the steeply inclined coal seam, which brings difficulties to the paste filling behind the support. Contents of the invention [0003...
Claims
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IPC IPC(8): E21D23/04E21D23/22E21F15/02
Inventor 成云海陈加胜林继凯房希江郭信山王贯东
Owner ANHUI UNIV OF SCI & TECH