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Grout sprinkling device and grout sprinkling method on fully mechanized mining face of thick seam

A technology for fully mechanized mining face and thick coal seam, which is applied in safety devices, mining equipment, earthwork drilling, etc. Reduce workload, scientific effect of spraying method

Active Publication Date: 2015-02-04
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of spraying slurry requires a lot of labor, and it is unsafe for personnel to walk on the shelves, which also affects the mining process of the working face.

Method used

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  • Grout sprinkling device and grout sprinkling method on fully mechanized mining face of thick seam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The slurry spraying device of the fully mechanized mining face in thick coal seam includes three slurry spraying units, each slurry spraying unit includes a slurry delivery pipe and a slurry spraying pipe, the diameter of the slurry spraying pipe is smaller than that of the slurry delivery pipe, and the larger The diameter of the grouting pipe can ensure that the grouting material in each grouting pipe meets the needs of the spraying flow rate; the grouting pipe and the grouting pipe are connected by a different-diameter tee, and the diameters of the two pipes in the different-diameter tee are equal to the size of the grouting pipe , the other pipe diameter is equal to the diameter of the spraying pipe; a control switch is provided at the connection between the spraying pipe and the three-way valve, which is used to control the opening of the spraying pipe; the feeding pipes of two adjacent spraying units pass through different diameters Three links in series. The grout...

Embodiment 2

[0037] figure 1 It is a schematic structural diagram of a slurry spraying device for a fully mechanized mining face in a thick coal seam provided by Embodiment 2 of the present invention.

[0038] A slurry spraying device for a fully mechanized mining face in a thick coal seam includes a plurality of N slurry spraying units (N≥6), and each slurry spraying unit includes a slurry feeding pipe 1 and a slurry spraying pipe 2, and the diameter of the slurry spraying pipe 2 is less than The diameter of the slurry delivery pipe 1 is a high-pressure rubber hose with a diameter of Φ51mm and a length of 2.5m. Spraying pipe 2 is: Φ25mm, long 1.6m high-pressure hose. The slurry feeding pipe 1 and the slurry spraying pipe 2 are connected by the reducing tee 3. The three pipe diameters of the reducing tee 3 are Φ51mm, Φ51mm and Φ25mm respectively. Switch 4, the control switch 4 is a shut-off valve or other control components that can realize pipeline closing and opening. The slurry feedi...

Embodiment 3

[0042] This embodiment discloses a slurry spraying method for a fully mechanized mining face in a thick coal seam, which includes the following steps:

[0043] A slurry spraying pipe (Φ25mm×1.6m short high-pressure hose) with a control switch (Φ25mm cut-off valve) is laid in parallel between the coal mining face frame and the direction from the coal side to the goaf. The control switch is used to control the slurry spraying pipe spraying operation;

[0044]The side of the slurry pipeline close to the coal side is connected by a slurry delivery pipe (Φ51mm×2.5m high-pressure rubber hose), and the slurry delivery tube is connected to the slurry delivery tube through a Φ51mm variable Φ25mm tee with a different diameter, and the tee with a different diameter is fixed by a U-shaped clip The tail of the support frame is specifically fixed on the rear column of the support; the grout delivery pipe closest to the upwind lane is connected to the 4-inch grout pipeline, and the grout pip...

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Abstract

The invention discloses a grout sprinkling device and a grout sprinkling method on a fully mechanized mining face of a thick seam. The grout sprinkling device on the fully mechanized mining face of the thick seam comprises a plurality of grout sprinkling units. Each grout sprinkling unit comprises a grout feeding pipe and a grout sprinkling pipe. The diameter of the grout sprinkling pipes is smaller than that of the grout feeding pipes. The grout feeding pipes are connected with the grout sprinkling pipes through reducer tees. Control switches are arranged at the joint between the grout sprinkling pipes and the reducer tees. The grout feeding pipes of two adjacent grout sprinkling pipes are connected in series through the reducer tees. The grout sprinkling device has the advantages of being simple and compact in structure, and scientific and reasonable in the grout sprinkling method, overcoming a lot of defects in the prior art, achieving convenient installation and convenient maintenance, and being good in the sprinkling effect and high in sprinkling efficiency.

Description

technical field [0001] The invention relates to coal mine safety production technology, in particular to a slurry spraying device and a slurry spraying method for fully mechanized mining working faces in thick coal seams. Background technique [0002] At present, the coal seam in the goaf of the coal mining face in the coal mining operation has the tendency of spontaneous combustion and ignition, and coal spontaneous combustion and ignition accidents are prone to occur, which has greatly affected the life safety of coal mine workers and is one of the most dangerous factors in coal production. one. [0003] During the mining of the coal face, due to the insufficient roof caving of the goaf, there must be diffuse air leakage in the goaf, which may easily cause the slow oxidation of the coal seam. When the working face encounters an abnormal area and the advance speed is slow, the heat will accumulate in the goaf, which will eventually cause coal spontaneous combustion and fir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/02
Inventor 方自胜邵洪杰殷传刚胡吉实张永华李德根
Owner HUAINAN MINING IND GRP
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