Formwork support with filling behind support

Abstract

The invention relates to an after-support filling falsework which solves the difficulty in the prior art that the long-wall working face after-support goaf can not be simultaneously filled with materials such as recrement and paste or slurry and the like, and comprises a reverse four link type hydraulic bracket formed by the base and the top beam of a hydraulic upright post support; and the technical key points are that: a light scraper conveyer is hung on the tail telescopic girder of the top beam, an upper baffle is connected with a lower baffle case by a lifting hydraulic cylinder and a slideway, the tail telescopic girder is connected with the rear part of the top beam, the lower baffle case is connected with the base, the bottoms at the two sides of the lower baffle case are respectively inserted into cases at the two sides of the base, the lower baffle case moves relatively to the cases at the two sides of the base, and the bottoms at the two sides of the lower baffle case are mutually contacted with the cases at the two sides of the base. The falsework has compact structural design, can meet the systematical operations of coal mining, recrement filling, paste filling and solidification during normal comprehensive mining, leads the coal mining production process to run through the after-support filling technique, greatly reduces limitation among all operation links, and improves the production efficiency.

Description

technical field [0001] The invention relates to a special hydraulic support used in a mine, in particular to a kind of hydraulic support suitable for the whole mining area, which can densely fill waste gangue and paste concrete (or slurry) in the gob during the mining operation of the normal working face. The back-filling formwork support of the working face integrates the functions of mining support and goaf filling after the erection. Background technique [0002] Most of the existing Jinggong mines adopt the roof natural caving method when mining coal, that is, after the coal seam is mined, the roof and other overlying strata naturally collapse behind the support of the working face (goaf), and then As the coal seam continues to be mined, the overlying rock layer gradually falls, which often affects the surface and causes ground subsidence. In many mining areas, ground buildings are destroyed and villages are relocated. The impact of the subsidence area often lasts for de...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a formwork support for filling behind the frame, which solves the problem in the prior art that it is impossible to simultaneously fill the goaf with gangue and paste or slurry in the goaf behind the longwall working face. The design is compact and meets the equipment installation, use and maintenance conditions of the fully mechanized mining face; while carrying out normal fully mechanized mining advancement, it meets the systematic operations of coal mining, gangue filling, paste (slurry) filling and solidification, and coal mining production The process runs through the post-rack filling process, which greatly reduces the constraints between various operation links and improves production efficiency

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