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System for feeding coal mine solid filling material

A technology for solid filling and coal mines, which is applied to fillings, mining equipment, safety devices, etc., can solve problems such as ground subsidence and danger, and achieve the effects of preventing blockage, alleviating the impact of falling, and reducing the degree of compaction

Inactive Publication Date: 2013-01-23
HEBEI COAL SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Mine goaf is the underground space left after mining. If it is not filled, it will cause ground subsidence and bring danger.

Method used

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  • System for feeding coal mine solid filling material
  • System for feeding coal mine solid filling material
  • System for feeding coal mine solid filling material

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] The coal mine solid filling material feeding system of the present invention is as figure 1 , figure 2 As shown, it includes a filling control room 1, a gangue silo 4, a coal ash silo 19, a feeding pipe 5, an underground airtight chamber 10, an anti-shock buffer device 6, an underground silo 7 and an underground conveying system. The feeding pipe is provided with gangue inlet 3 and fly ash inlet 2. The gangue silo is connected with the gangue inlet, and the coal ash silo is connected with the fly ash inlet. The anti-shock buffer device is located at the bottom of the downhole airtight chamber, and the feeding pipe 5 is connected with the downhole feed bin through the downhole airtight chamber 10, and the downhole feed bin is connected with the downhole conveying system. Anti-shock buffer device 6 is used to slow down the impact force of filling materi...

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Abstract

The invention relates to a system for feeding a coal mine solid filling material. The system comprises a filling control chamber, a gangue material bin, a coal ash material bin, a feeding pipe, an underground closed chamber, an impact resistance buffering device, an underground material bin and an underground conveying system, wherein the impact resistance buffering device is positioned at the bottom of the underground closed chamber; the feeding pipe is connected with the underground material bin through the underground closed chamber; the underground material bin is connected with the underground conveying system; the underground conveying system comprises a conveying passage and a conveyer; the conveyer is connected to a filling point; the feeding pipe consists of a protection hole wall steel pipe and a double-layer anti-abrasion pipe; a ceramic anti-abrasion pipe is sleeved on a shrinkage wall at the bottom of the underground material bin; and an outwards discharging type air guide hose is arranged at the upper opening of the underground material bin. According to the system, a large-aperture perpendicular feeding pipe is used for feeding the material, so that the feeding capacity of the filling material is improved, and a filling effect and the safety are improved; by the umbrella-shaped impact resistance buffering device, falling impact force of the filling material can be relieved; the compactness of the filling material in the bin can be reduced; and the bins can be prevented from being plugged.

Description

technical field [0001] The invention belongs to the technical field of mine goaf filling, and relates to a coal mine solid filling material feeding system, in particular to a coal mine solid (bulk material) filling material vertical feeding system. Background technique [0002] Mine goaf is the underground space left after mining. If it is not filled, it will cause ground subsidence and bring danger. Filling gobs underground in coal mines can reduce ground subsidence and eliminate unsafe factors. Filling mining is to fill the goaf with underground or ground filling materials to control surface subsidence and increase the mining rate of coal resources. Currently, the main materials for filling gobs in coal mines are gangue, in addition to coal powder ash and steel slag (metallurgical slag). [0003] In the filling method coal mining technology, solid filling (gangue and fly ash bulk materials) is a commonly used method. The filling technology mainly includes the selection o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00
Inventor 刘建功赵庆彪
Owner HEBEI COAL SCI RES INST
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