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

Method for supporting ultra-thick and fluffy coal roadway

A support technology for soft coal seams and roadways, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc. It can solve problems such as soft coal seams, difficult support, and easy slabs, so as to strengthen the strength of surrounding rock, simple construction, and low cost Effect

Active Publication Date: 2012-12-12
DATONG COAL MINE GRP
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that it is difficult to support the ultra-thick soft coal seam roadway because the coal seam is soft, broken, easy to flake, and roof fall, and to provide a method for supporting the ultra-thick soft coal seam roadway

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
  • Method for supporting ultra-thick and fluffy coal roadway
  • Method for supporting ultra-thick and fluffy coal roadway
  • Method for supporting ultra-thick and fluffy coal roadway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] Such as Figure 1 to Figure 3 As shown, a method for roadway support in an extra-thick soft coal seam comprises the following steps:

[0020] 1) Support for the roof of the roadway: several rows of left-handed threaded steel resin anchor rods 1 without longitudinal reinforcement are uniformly fixed on the roof of the roadway, and the distance between two adjacent rows of left-handed screwed steel resin anchor rods 1 without longitudinal reinforcement is 1000mm; Rebar-free rebar resin anchor rod 1 includes four left-handed rebar-free rebar resin anchor rods 1 with a diameter of 18mm and a length of 2500mm, and the distance between two adjacent left-hand rebar-free rebar resin anchor rods 1 is 900mm , the two left-handed resin anchor rods 1 without longitudinal reinforcement are inclined and fixed towards the direction of their adjacent roadsides respectively, and the...

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 method for supporting an ultra-thick and fluffy coal roadway, aiming at solving the problem that the ultra-thick and fluffy coal roadway is hard to support since the coal bed is fluffy, easy to smash, and easy to nick, and the roof is easy to fall. The mode for supporting the ultra-thick and fluffy coal roadway provided by the invention is changed into various multi-support and union-support mode from the single anchor rod support mode and erected steel shed support mode, in particular, the union-support of an anchor rod, an anchor cable, a steel belt and a mesh. The method has the unique advantage that the reinforcing theory and the suspending theory can be combined with each other, and the stability of the ultra-thick and fluffy coal roadway can be controlled. The method has the advantages of being good in support effect, reasonable in parameters, simple in construction, lower in cost, safe, reliable, better in work environment and the like, and is particularly suitable for the support of the ultra-thick and fluffy coal roadway.

Description

technical field [0001] The invention relates to a roadway support method in coal mines, in particular to a roadway support method for extra-thick soft coal seams. Background technique [0002] Extra-thick and soft coal seam is a common geological structure in the process of coal mining in my country, which has the characteristics of high structural stress, poor lithology of surrounding rock, broken and easy to collapse. The geological conditions of the ultra-thick soft coal seam area are complex. Affected by tectonic movements, high levels of stress exist in the surrounding rock. The coal mine roadways located in this area are all deep in the large-scale soft surrounding rock, which seriously affects the driving speed and safety of the roadway. . [0003] The support of roadways in extra-thick and soft coal seams has always been one of the major problems that plague the safety production of coal mines in my country. Because such coal seams are soft, broken, easy to flake an...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00
Inventor 杨智文刘锦荣张向东冯月新李成生赵宏吕家忠范世兴纪润清殷建河秦靖宇
Owner DATONG COAL MINE GRP
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