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Method for solid stowing of underground roadway and filling system

A dense filling and roadway technology, which is applied in the direction of filling, earthwork drilling, safety devices, etc., can solve the problems of uncompacted gaps, low filling efficiency, and insufficient topping of the upper triangle of the filling roadway, so as to enhance the filling strength and improve Filling efficiency, effect of achieving filling compactness and compression resistance

Inactive Publication Date: 2019-07-05
XINWEN MINING GROUP
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Problems solved by technology

[0004] In order to solve the problem of gaps and incompactness in the upper space of the goaf, especially solve the problem that dense filling cannot be realized in the upper triangle area near the horizontal filling surface, resulting in the problem that the upper triangle of the filling roadway cannot be fully connected to the top and the filling efficiency is low, the present invention Provides a method for densely filling underground roadways

Method used

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  • Method for solid stowing of underground roadway and filling system
  • Method for solid stowing of underground roadway and filling system

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Embodiment Construction

[0025] In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

[0026] like figure 1 , the filling system of the present invention includes a downhole part and a downhole two parts, wherein:

[0027] The upper part of the well comprises cement tank 1, fly ash tank 2, pool 3, well mixer 4, slurry storage tank 5 and gangue bunker 7;

[0028] The underground part includes a slurry conveying pipeline 6, a gangue separation gangue buffer bin 8 set on the coal mining face, a coal gangue buffer bin 9 set on the filling working face, ...

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Abstract

The invention discloses a method for solid stowing of an underground roadway and a filling system. According to the method, mainly, on the basis of filling the lower part of a roadway with peristaticautomatic flowing of water-washed gangue, the upper part of a compacted roadway is filled with gangue blown by impact wind waves, and importantly, the upper triangular area of a filling roadway is filled with cementing materials; and thus the filling compactness and compression resistance of the whole roadway are realized, the working face filling efficiency is improved, the compacting filling strength of coal gangue is strengthened, and the method for solid stowing of the underground roadway and the filling system are especially suitable for cementing filling workplaces.

Description

technical field [0001] The invention belongs to the technical field of coal mine filling and mining, and is particularly suitable for a method for cementing and dense filling of coal gangue in underground roadways. Background technique [0002] my country is in a period of great development of the coal industry, and the technology of coal mine filling and mining is changing with each passing day. According to the different filling materials and conveying methods used, the filling processes used in my country mainly include dry filling, hydraulic filling, cemented filling, and wind filling, etc., especially cemented filling. It has been widely used in underground coal mines and non-ferrous metal mines. [0003] The filling method is to mix the cementitious material with solid materials such as coal gangue and fly ash, which improves the solidification strength of the filling body. It can be cemented and coagulated within a controllable time to achieve the design strength of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00E21F15/06
CPCE21F15/005E21F15/06
Inventor 路彬耿华锋刘佳
Owner XINWEN MINING GROUP
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