Coal roadway double-layer ventilation device and method for preventing exceeding gas

A ventilation device and gas technology, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., can solve the problems of increasing manpower, material resources, coal dust concentration exceeding the limit, and high cost, so as to increase the section size and reduce the Influencing and solving the effect of governance technical problems

Inactive Publication Date: 2017-02-08
NORTH CHINA INST OF SCI & TECH
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For coal roadways with high gas content, only ventilation methods cannot solve the problem of gas control (the national "Coal Mine Safety Regulations" requires that the maximum wind speed of coal roadway excavation should not exceed 4m / s, and too high wind speed is not conducive to the control of coal dust , easily lead to coal dust concentration exceeding the limit), if additional drainage measures are added for gas control, corresponding manpower and material resources need to be increased, which is hugely costly and uneconomical

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coal roadway double-layer ventilation device and method for preventing exceeding gas
  • Coal roadway double-layer ventilation device and method for preventing exceeding gas
  • Coal roadway double-layer ventilation device and method for preventing exceeding gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] combined with figure 1 , 2 It can be seen from and 3 that a double-layer ventilation device for coal lanes to prevent gas from exceeding the limit is composed of a local ventilator 1, an air duct 2, a roadway space separation device 3 and a coupling 4; the roadway space separation device 3 is an elastic The structure is suspended in the excavation roadway 8 by the coupling 4, and its longitudinal section matches the shape of the longitudinal section of the excavation roadway 8, and extends along the excavation direction of the excavation roadway 8. There is a channel between the outer diameter and the inner wall of the excavation roadway 8, and the bottom end is in full contact with the ground to form a linear inner layer ventilation channel 5 and a U-shaped outer layer ventilation channel 6, and the ventilation channel is communicated with the ventilation roadway 7; The cylinder 2 is hung horizontally on one side of the inner wall of the roadway space dividing device ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a coal roadway double-layer ventilation device and method for preventing exceeding gas. A ventilation space of a coal roadway is reconstructed and divided into two parts; the inner-layer ventilation channel applies to the normal roadway ventilation standard, and the outer-layer ventilation channel can be executed according to the standard of a special gas discharge roadway since no other technology is adopted and the gas is discharged only by ventilation; and the maximum allowed gas concentration is increased from 1% to 2.5%, so that the ability of gas control through ventilation is greatly improved. A coupler can automatically adjust the length thereof according to the gas concentration of the outer-layer ventilation channel, so that the spatial volume of the outer-layer ventilation channel can change along with the change of gas concentration; and on the premise of guaranteeing non-excessive gas concentration, the cross section size of the inner-layer ventilation channel is increased as much as possible, and thus the influence on the tunneling technology is reduced.

Description

technical field [0001] The invention relates to a device for controlling ventilation and air flow in a coal roadway, in particular to a double-layer ventilation device and method for a coal roadway that can automatically adjust the space ratio of the double-layer roadway according to the gas concentration in the roadway. Background technique [0002] As we all know, coal roadway excavation is an indispensable work in coal mine underground mining; in the process of coal roadway excavation, there must be gas control problems. [0003] At present, coal mine gas control methods can be divided into ventilation and drainage; for coal seams with relatively high gas content (even outburst coal seams), the gas control of coal roadway excavation is usually carried out jointly by ventilation and drainage; For coal seams with relatively low gas content, ventilation can solve the problem of gas control in coal roadway excavation. [0004] For coal roadways with high gas content, only ve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21F1/00
CPCE21F1/006
Inventor 齐黎明魏传臻张旭锟赵嵘
Owner NORTH CHINA INST OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap