Support-isolation combined type paste filling system and filling method

A paste filling and combined technology, applied in the directions of backfill, earthwork drilling, pillars/supports, etc., can solve the problems of paste filling, leakage of slurry, difficulty in recovering single pillars, etc., so as to maintain integrity and shorten filling time. , the effect of reasonable filling and recovery time

Active Publication Date: 2019-05-21
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the difficulty in recovery of single pillars in the process of paste filling and the technical problems of slurry leakage in paste filling, and to realize the simu

Method used

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  • Support-isolation combined type paste filling system and filling method
  • Support-isolation combined type paste filling system and filling method
  • Support-isolation combined type paste filling system and filling method

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A support-isolation combined paste filling system, the structure of which includes pressure-releasing single pillars 1 and isolation and leakage-proof slurry devices 2, such as figure 1 As shown, the yielding single pillar realizes the yielding deformation of the goaf, and the airbag of the isolation and leakage prevention slurry device is in close contact with the top and bottom plates, thus ensuring the isolation and prevention of leakage during the filling process.

[0036] like Figure 2 to Figure 4 As shown, the pressure relief single prop 1 includes a top tray 11, a base tray 12, a threaded sleeve 13, a threaded hydraulic prop 14 and a shock absorber 15, and the two ends of the threaded hydraulic prop 14 are respectively provided with a threaded sleeve 13, and the threaded sleeve The other end of the cylinder 13 is connected to the top tray 11 or the base tray 12, wherein the top tray 11 or the base tray 12 can be rectangular, circular or oval, and the area can be...

Embodiment 2

[0048] On the basis of Example 1, in order to further illustrate the structure of the support-isolation combined paste filling system provided by the present invention, and the filling method using the system, take the 3301 working face of a certain mine as an example to explain the technical solution of the present invention Describe in detail.

[0049] The main coal seam of the 3301 working face of a certain mine is the 3rd coal seam of the Shanxi Formation. The strike length of the working face is 500m, the inclination length is 200m, the average thickness of the coal seam is 3.2m, and the average inclination angle is 5°. Using this method for filling mining, the specific construction steps are as follows.

[0050] Step A. After the working face is cut, when the filling step is reached, arrange a row of yielding single pillars behind the fully mechanized mining hydraulic supports, and arrange the yielding single pillars close to the side of the fully mechanized mining hydra...

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Abstract

The invention discloses a support-isolation combined type paste filling system and a filling method, and relates to the technical field of underground mining methods. The system comprises a yielding single prop and an isolation slurry leakage prevention device, wherein the yielding single prop comprises a top seat tray, a base tray, threaded sleeves, a threaded hydraulic prop and damping blocks, the threaded sleeves are arranged at the two ends of the threaded hydraulic prop respectively, the other ends of the threaded sleeves are connected with the top seat tray or the base tray, and the damping blocks are arranged in the threaded sleeves; the isolation slurry leakage prevention device comprises air bags, folding plates, air taps, elastic ropes and annular hooks, the folding plates are arranged in the air bags, the folding plates are hinged to be used for supporting the air bags, the elastic ropes are further arranged between the folding plates, the two ends of the elastic ropes are fixed to the air bags, and the annular hooks are arranged on the outer sides of the air bags. The problems that a single prop is difficult to recover and paste filling and slurry leakage occur are solved, synchronous filling and stoping are achieved, and the system has the advantages that construction is easy and convenient, and materials are saved.

Description

technical field [0001] The invention relates to the technical field of underground mining methods, in particular to a support-isolation combined paste filling system and a filling mining method using the system. Background technique [0002] Paste filling mining is an important part of underground mining technology. Paste filling eliminates the influence of surface subsidence and effectively avoids geological disasters caused by stress concentration. Production time and space, thereby affecting mining efficiency. In addition, in the paste filling process, there are problems such as the transformation of the filling support or the replacement of the old support, the conflict between coal mining and filling operations, and the closure of the filling area. This is mainly because the paste filling must be the coal mining area and the filling area at the same time. The roof provides support, but also has to be insulated against leaks. Although the special filling support facili...

Claims

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Application Information

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IPC IPC(8): E21F15/02E21D15/44E21D15/54E21D15/55
Inventor 王昌祥路瑶施振跃秦传睿李杨杨李青海张新国陈军涛刘音
Owner SHANDONG UNIV OF SCI & TECH
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