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Method for filling paste behind filling hydraulic supports

A technology of hydraulic support and paste filling, which is applied in the directions of filling, mine roof support, earthwork drilling, etc., can solve problems such as insufficient airtightness, and achieve the effect of improving filling effect, simple operation process and reducing labor intensity of workers.

Inactive Publication Date: 2013-11-06
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming of insufficient airtightness of the goaf by the paste filling hydraulic support, and to provide a post-filling method of the paste rack with good airtightness, simple operation process and economical feasibility

Method used

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  • Method for filling paste behind filling hydraulic supports
  • Method for filling paste behind filling hydraulic supports
  • Method for filling paste behind filling hydraulic supports

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with specific drawings and specific embodiments.

[0031] Such as figure 1 As shown, one end of the hydraulic support 1 is in contact with the coal body 8 , and the other side of the hydraulic support 1 is a filled area 7 , and a space 2 to be filled is formed between the filled area 7 and the tailgate 6 . Separate the two adjacent hydraulic supports 1, retract the telescopic beam 3, adjust the balance jack, and separate the rear end of the top beam 4 of the hydraulic support 1 from the top plate 5. The tailgate is divided into 6 parts and four parts, namely the upper left tailgate, the upper right tailgate, the lower left tailgate, and the lower right tailgate. Lower the upper left tailgate, upper right tailgate, raise the lower left tailgate, lower right tailgate.

[0032] Such as figure 2 As shown, a flame-retardant sponge 10 is added to the side of the tailgate 6, fixed on the side of...

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Abstract

The invention discloses a method for filling paste behind filling hydraulic supports. The method comprises the steps of (1), separating two adjacent hydraulic supports and taking a rear telescopic girder, so that back ends of top beams of the hydraulic supports are separated from a top plate; (2), adding flame-retardant sponges tosides of back baffles, placing flame-retardant sponges in gaps between back ends of the top beams and the top plate, lifting the back ends of the hydraulic supports to enable the flame-retardant sponges to be clamped between the top beams and the top plate, and controlling a side-pushing jack to seal the two hydraulic supports; (3) placing waste non-flammable adhesive tapes in gaps between the top plate and the back baffles, and placing lower ends of the waste non-flammable adhesive tapes in gaps between a bottom plate and the back baffles; (4) forming a separation wall between the back of the hydraulic supports and an area to be filled to completely seal the space to be filled; (5), filling the space to be filled with paste from top to bottom, removing the hydraulic supports after a filling body solidifies and meets requirements for support force, and performing the next filling. Materials used in the method are the flame-retardant sponges and the waste non-flammable adhesive tapes, the materials are cheap, the operation process is simple, and the implementation is easy.

Description

technical field [0001] The invention relates to a paste filling method after filling a hydraulic support frame. Background technique [0002] With the shortage of shallow coal resources, some coal mines have entered the "three-down" coal mining, that is, coal mining under buildings, coal mining under railways, and coal mining under water bodies. "Three-down" coal mining has high requirements for controlling surface subsidence, so the full filling mining method is generally adopted. Paste filling has the advantages of good subsidence control effect, simple operation process and economical feasibility, but the common problems of most paste filling hydraulic supports are: the airtightness between the supports is not good, and the support and the roof cannot be completely connected. In order to avoid the problem of easy grouting during filling and grouting, it is generally used to fill in bags behind conventional supports. When filling in inclined roadways or stopes, the vertic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00E21F15/04E21D23/06
Inventor 成云海陈加胜林继凯张明庞继禄
Owner ANHUI UNIV OF SCI & TECH
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