Grouting device

A grouting and grouting pipe technology, which is applied in safety devices, fillings, mining equipment, etc., can solve the problems that the mud cannot cover the oxidation zone, spontaneous combustion of leftover coal, grouting blind areas, etc., to increase the density, increase the grouting area, reduce the The effect of the probability of fire

Active Publication Date: 2016-02-03
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a grouting device to solve the problem in the prior art that grouting to the goaf is easy to form a grouting blind area, and the grouting grout cannot cover all the oxidation zone, which causes spontaneous combustion of residual coal

Method used

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Embodiment Construction

[0019] figure 1 It is a structural schematic diagram of Embodiment 1 of the grouting device of the present invention, as figure 1 As shown, the grouting device of the present invention includes a plurality of grouting pipes and gate valves 7, the number of grouting pipes can be two or three, the number of gate valves 7 can be the same as the number of grouting pipes, and each gate valve 7 is installed on a grouting pipe The grouting parts of multiple grouting pipes are evenly spaced on the upper part of the goaf, and the gate valve 7 is used to control each grouting pipe to perform time-sharing intermittent grouting. The main grouting pipe 1 of the upward groove 8 provides yellow mud for the whole grouting device, and the grouting pipe is used for grouting the goaf.

[0020] During the specific grouting process, you can first open the figure 1 The gate valve 7 of the uppermost grouting pipe in the center is closed for a period of time after grouting, and then the gate valve ...

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Abstract

The invention provides a grouting device, which comprises a plurality of grouting pipes and gate valves, wherein each gate valve is mounted on each grouting pipe; the grouting parts of the plurality of grouting pipes are uniformly arranged at the upper part of a mined out space at intervals; the gate valves are used for controlling the time-sharing and intermittent grouting of each grouting pipe. According to the device, the grouting area for an oxidation zone in the mined out space is effectively increased, the compaction of the mined out space is increased, the probability of fire hazards caused by air leakage of the mined out space is effectively reduced.

Description

technical field [0001] The invention relates to goaf grouting technology, in particular to a grouting device. Background technique [0002] Coal mine goaf refers to the cavity or cavity left after the mining of underground coal or coal gangue in the process of coal mine operation. Since there is a large amount of residual coal in the goaf during the coal mining process, if there is a problem of air leakage in the goaf, it is easy to cause spontaneous combustion of the residual coal, which seriously threatens the safe production of the coal mine. [0003] In order to avoid the occurrence of such unsafe accidents, in the prior art, the device for preventing and controlling spontaneous ignition of the large-inclination coal mining face adopts a single-pass grouting pipe pre-buried in the goaf along the upper trough, and prevents the goaf from being prevented by the grouting pipe. The yellow mud is poured, and the yellow mud quickly cements and wraps the crushed coal, fills the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/00
Inventor 桑浩李忠虎邹鹏徐伟
Owner HUAINAN MINING IND GRP
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