Method for up-down replacement collaborative mining of close distance coal seams

A mining method and short-range technology, applied in underground mining, surface mining, earth-moving drilling and other directions, can solve the problems of affecting the safety of coal mine production, the working face being affected by the mining movement, and the low efficiency of mining replacement, so as to alleviate the tension of mining replacement. Difficulties, wide adaptability and field applicability, adaptable effects

Inactive Publication Date: 2019-06-04
CHINA UNIV OF MINING & TECH
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by geological conditions, some mines often use the single-wing mining method to mine coal resources in the mine field. The resulting problems are low mining replacement efficiency, and the working face is seriously affected by mining, which seriously restricts mine production efficiency and affects coal mine

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 up-down replacement collaborative mining of close distance coal seams
  • Method for up-down replacement collaborative mining of close distance coal seams
  • Method for up-down replacement collaborative mining of close distance coal seams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

[0029] The method for synergistic mining up and down of the short-distance coal seam of the present invention, its steps are:

[0030] like figure 1 As shown, a) Select the upper coal seam as the main mining seam, and the lower coal seam as the auxiliary mining coal seam, and set the working faces in the main coal mining seam and the auxiliary mining coal seam at a certain stacking distance of 14 or staggering distance of 17, in order Gradually take over the mining, the first mining face is arranged in the main coal seam, and the first replacement face is arranged in the auxiliary coal seam;

[0031] like figure 2 As shown, b) In the main coal mining seam, excavate from the coal transportation

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 up-down replacement collaborative mining of close distance coal seams. The method is suitable for use of underground coal mines. The method includes three stages of coal seam mining sequence design, mining roadway and working face excavating and mining replacement design and stoping interval design, according to the coal quality conditions and market requirements, a main coal mining seam and a cooperating coal mining seam are determined, a first mining face haulage way and a tail gate are drifted along a bottom plate of the main coal mining seam, and meanwhile, a cooperating mining face mining roadway is arranged in the stress decreasing area of the cooperating coal mining seam; and when the main mining face is stoped at a certain distance, the cooperating mining face is then stoped, the mining sequence is repeated until the close distance coal seams are stoped. The technical problem of close distance coal seam mining at the single-wing mining areais effectively solved, the mine replacement tension and working face mining effect are relieved, and safe, high-efficiency and high recovery mining of the close distance coal seams is realized.

Description

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

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
Owner CHINA UNIV OF MINING & 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