Method for filling gob

A goaf filling technology, applied in filling, mining equipment, earth square drilling and mining, etc., can solve problems such as incomplete filling, inappropriate selection and proportion of paste materials, high slurry mass fraction, etc.

Active Publication Date: 2012-06-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the inappropriate selection and proportion of the paste material and the high mass fraction of the slurry, the filling pipe is easily blocked
[0007] In the above-mentioned existing filling methods, the filling equipment and filling materials used each have different deficie

Method used

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  • Method for filling gob
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Embodiment Construction

[0017] Specific embodiments of the present invention are described in further detail below:

[0018] Implementing a method for filling the goaf provided by the present invention is a method for filling the goaf in the existing filling mining method. The paste material in the mined-out area, in order to achieve the purpose of enriching the goaf, the specific implementation process is as follows:

[0019] In order to ensure the smooth implementation of filling mining, a special hydraulic filling support for fully mechanized mining is designed. This support should meet the following basic requirements: (1) Supporting the roof of the coal mining operation space of the working face. It is consistent with the requirements for support in the face of ordinary fully mechanized mining. With full filling, there will be no periodic pressure on the filling mining face, and the requirement for the resistance of the working face of the filling support is small. The support strength is req...

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Abstract

The invention provides a method for filling a gob. In the filling process, when filling paste arrives at the position of an elastic baffle, a pushing device which is arranged on a tail beam of a hydraulic support pushes and pulls the elastic baffle back and forth to ensure that the filling paste refills the gob after being pushed to the gob which is not filled fully behind the hydraulic support; the pushing device is hinged with a pushing jack at the left end of the tail beam of the hydraulic support; the right end of the pushing jack is connected with the elastic baffle; and the filling paste is formed by uniformly mixing coal gangue, coal ash, a cementing material and water in the mass percent ratio of 45:20:15:20. According to the method, the pushing device which is arranged on the tail beam of the hydraulic support has a simple structure and is convenient to operate; and according to particle sizes and different ratios of components, the materials of the filling paste are convenient to transport and control, are condensed quickly and have certain expansibility and a good roof-contacting effect to ensure that surface subsidence can be effectively controlled.

Description

technical field [0001] The invention relates to a filling method in the filling mining method, in particular to a method for filling goafs in the filling mining. Background technique [0002] The filling method in the existing filling mining method, such as the publication number CN101881180A, is a "coal mine working face like paste filling method and slurry blocking device", which is to install a slurry blocking device on the cutting top row of pillars in the working face , start filling until the filling height of the paste-like body is consistent with the height of the slurry curtain, and the height of the goaf will be filled; after filling is completed, when the paste-like body is semi-solidified and does not sag, the coal mining will be carried out in a cycle; and then recycled The slurry retaining device is retracted to cut the top row of pillars; after the working face reaches a filling step, the cycle is carried out according to the aforementioned process. However, ...

Claims

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Application Information

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IPC IPC(8): E21F15/06E21D23/04E21D23/16
Inventor 冯国瑞郭晓彦高鸿宇
Owner TAIYUAN UNIV OF TECH
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