Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Roadway surrounding rock deformation, rock burst and coal and gas outburst comprehensive treatment method

A technology of surrounding rock deformation and rock pressure impact, which is applied in the field of roadway surrounding rock deformation, comprehensive control of coal and gas outburst, and rock impact rock pressure to achieve the effect of simple construction, good effect and high applicability

Inactive Publication Date: 2015-08-12
CHINA COAL TECH ENG GRP CHONGQING RES INST
View PDF8 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for coordinating the prevention and control measures of various dynamic disasters in view of the reality that multiple dynamic disasters coexist in deep mine working faces, and to achieve comprehensive and efficient prevention and control of roadway surrounding rock deformation. , rock burst, coal and gas outburst deep dynamic disasters

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
  • Roadway surrounding rock deformation, rock burst and coal and gas outburst comprehensive treatment method
  • Roadway surrounding rock deformation, rock burst and coal and gas outburst comprehensive treatment method
  • Roadway surrounding rock deformation, rock burst and coal and gas outburst comprehensive treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0028] In the 11501 working face of a certain mine, the average mining depth exceeds 900m, the thickness of the coal seam is 0.66-2.27m, the average is 1.59m, the inclination angle is 0-9°, the average is 5°, and the coal seam is stable. rock formations. After evaluation, the working face has various dynamic disasters such as large deformation of roadway surrounding rock, rock burst, coal and gas outburst, and a comprehensive treatment method for roadway surrounding rock deformation, rock burst, coal and gas outburst provided by the present invention, specific steps as follows:

[0029] 1. The anchor net cable active support technology is used to strengthen the strength of the surrounding rock, improve its self-supporting capacity, and form a surrounding rock reinforcement area. Such as figure 1 , the roadway section of the working face is jointly supported by anchor nets and cables, the roadway roof adopts Φ22-500 / 2800 left-handed high-strength anchor rods without longitudi...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a roadway surrounding rock deformation, rock burst and coal and gas outburst comprehensive treatment method. The method is based on the intensity enhancing effect of active support of a rock bolt on a surrounding rock body, the weakening, pressure relief and rock burst prevention and treatment effects of large-diameter drill holes on a coal body, and the capability of a gas drainage system to effectively reduce the gas content of a coal seam. First, a rock bolt active support technology is adopted in the two roadways of a working face to enhance the intensity of surrounding rock; then, large-diameter pressure relief boreholes are machined every 3-3.5 meters among rock bolts, and the large-diameter pressure relief boreholes are sealed; and gas drainage boreholes are machined at regular intervals to drain gas in a coal seam. The rock bolt support structure and large-diameter borehole sealing jointly form a roadway surrounding rock reinforcing area, which can effectively control roadway deformation and maintain the working space. The reinforcing area, a weakening area and a drainage area formed by the method of the invention can effectively prevent and treat large deformation of roadways, rock burst, coal and gas outburst and other deep mine dynamic disasters, and provides safeguard for the safety production of mines.

Description

technical field [0001] The invention relates to a comprehensive treatment method for roadway surrounding rock deformation, rock burst, and coal and gas outburst, in particular to a comprehensive treatment method for coupling and coexistence of multiple dynamic disasters in deep mine working faces. Background technique [0002] With the development of my country's national economy, the demand for energy is increasing day by day. As the main component of my country's energy structure, coal mining intensity is gradually increasing. In recent years, a large number of mine mining activities have entered deep areas, and disasters that did not occur in shallow mining activities have emerged one by one, such as rock bursts and large deformations of soft rocks. At the same time, there is also the phenomenon that multiple dynamic disasters are coupled and coexist in the same working face, and various dynamic disasters are induced and promoted each other, which further deteriorates the...

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): E21D20/00E21F7/00
CPCE21B33/13E21D20/00E21F7/00
Inventor 王浩易恩兵
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com