Layered support method for rectangular coal roadway based on deep soft composite roof

A composite roof and weak technology, which is applied in the direction of earthwork drilling, mining equipment, bolt installation, etc., can solve the problems of insufficient grouting volume, inability to grouting support, etc., achieve timely grouting timing, save grouting cost, The effect of improving reliability

Active Publication Date: 2018-01-12
ANHUI UNIV OF SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current research on surrounding rock control methods for coal roadways with deep weak composite roofs mainly has the following shortcomings: the grouting support cannot be carried out in time according to the needs, and the amount of grouting is often insufficient; the mining process of the coal mining face is not monitored The development of roof cracks in roadways with weak composite roofs

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
  • Layered support method for rectangular coal roadway based on deep soft composite roof
  • Layered support method for rectangular coal roadway based on deep soft composite roof
  • Layered support method for rectangular coal roadway based on deep soft composite roof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0029] A layered support method for a rectangular coal roadway based on a deep weak composite roof of the present invention is obtained according to the mine drilling columnar diagram, the geological overview of the composite roof before the working face without recovery, the positions of soft and hard rock formations; when working After face mining, the location and range of crack development on the roof of the roadway are detected with a borehole peeper; then, the composite roof is supported layer by layer by using short grouted anchors and long grouted anchors with anchor cables.

[0030] A layered support metho...

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 layered supporting method based on a deep rectangular coal roadway with a tender composite roof. The layered supporting method is suitable for a coal face of a deep mine, and deformation of the rectangular mining roadway with the tender composite roof is controlled. Firstly, a borehole columnar section is used for judging the geological occurrence of the roadway roof, then a borehole observation instrument is used for detecting fracture development of the roadway roof in the coal mining process, and afterwards the effect of layered supporting is achieved through a short grouting anchor, a long grouting anchor and an anchor cable. By the adoption of the layered supporting method based on the deep rectangular coal roadway with the tender composite roof, according to the detected fracture development of the roof in the coal mining process, grouting supporting is carried out in time, grouting is carried out in time, the grout amount is more sufficient, and grouting cost is lowered.

Description

technical field [0001] The invention relates to a layered support method for a rectangular coal roadway based on a deep weak composite roof, which is suitable for deep mine coal mining face and controls the deformation of a rectangular mining roadway whose roof is weak and composite. Background technique [0002] The stability control technology of mining roadway in deep mine coal mining face has always been a key research direction in the field of mine pressure research. However, due to factors such as complex geological conditions and structural stress in coal mines, there have always been great difficulties in the research on surrounding rock control technology. Especially for the research on mining tunnels with weak composite roofs in deep wells, many scholars have carried out tireless explorations and proposed many valuable surrounding rock control schemes. The representative results are: tunnel step support method, the main principle of which is first The surrounding ...

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 Patents(China)
IPC IPC(8): E21D20/02E21D21/00
CPCE21D20/02E21D21/0026
Inventor 赵光明孟祥瑞彭瑞王超董春亮
Owner ANHUI UNIV 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