High-efficiency tunneling gas control method for high outburst mine coal roadway

A technology for coal lanes and mines, which is applied in the field of coal mine gas control, can solve problems that affect the balance of mine excavation, long gas drainage time, and unfavorable high-efficiency production, and achieve the goals of shortening drainage time, solving low efficiency, and reducing support costs Effect

Inactive Publication Date: 2010-06-23
CHINA UNIV OF MINING & TECH (BEIJING)
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the inventors found that there are still the following problems in the existing gas control technology in the coal roadway excavation of high outburst mines: the method of using pre-drainage and then proceeding to excavation after the gas reaches the specified ran

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
  • High-efficiency tunneling gas control method for high outburst mine coal roadway
  • High-efficiency tunneling gas control method for high outburst mine coal roadway
  • High-efficiency tunneling gas control method for high outburst mine coal roadway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the high-efficiency tunneling gas control method for coal roadways in high-outburst mines specifically includes: first, setting eighteen boreholes in the working face, of which six advanced drilling holes 4 are set in the coal roadway working face 1, and two advanced boreholes 4 are set in the two sides of the coal roadway. Six ultra-long deep holes 3 are respectively set in the drilling field 2, and the super-long deep holes 3 are inclined downward, and the angle is kept between 1° and 2°. Estimated excavation length. Grouting the two super long deep holes 3 to block the passage between the coal seam 1 of the working face and the outside coal seam, and at the same time, using the six advanced boreholes 4 distributed on the working face 1 of the coal roadway to carry out the gas control in the coal roadway Pumping and decompression treatment. After the treatment is completed, high-efficiency excavation o...

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 discloses a high-efficiency tunneling gas control method for a high outburst mine coal roadway, which comprises the following steps: before the working surface of the outburst mine coal roadway is used for tunneling, respectively forming a drill site at two sides of the coal roadway, perforating overlong deep holes from each drill site along the tunneling direction of the coal roadway, and carrying out grouting treatment so that gas in the grouting range along the tunneling direction of the coal roadway is relatively isolated from the surrounding environment, thereby forming a relatively closed roadway tunneling space, eliminating the potential safety hazard of outburst in the roadway tunneling process, and overcoming the original defect that as the time for pumping and discharging the gas is too long, the whole tunneling efficiency is very low; meanwhile, the method of the invention realizes high-efficiency tunneling in the premise of safety and has simple operation of construction processes; and the method is suitable for being popularized and utilized under various conditions of occurrence of high outburst coal seams.

Description

technical field [0001] The invention relates to a coal mine gas control technology, in particular to a high-efficiency coal mine roadway gas control method, which belongs to the technical field of coal mine gas control. Background technique [0002] The geological conditions of my country's coal mines are complex, especially the mines in the southwestern part of my country are complex and most of them are gas outburst mines. During the excavation process of high outburst mines, in order to prevent disasters caused by gas outburst, the deep hole gas drainage and pressure relief are often carried out on the excavation working face before the gas pressure is reduced to meet the requirements of the "Coal Mine Safety Production Regulations" After that, the coal roadway is excavated to ensure the safety of production; or another rock roadway is excavated along the top (bottom) plate of the coal roadway, and the coal seam drilling is carried out in advance to drain the gas in the r...

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): E21F7/00
Inventor 杨仁树郭东明戴华东
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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