Method of arranging ultra-close seam mining surrounding-rock roadway

A roadway layout and extremely close-distance technology, which is applied in safety devices, ground mining, mining equipment, etc., to achieve the effects of improving safety, significant economic benefits, and ensuring production connection

Inactive Publication Date: 2019-01-04
DATONG COAL MINE GRP
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of roadway layout for extremely short-distance coal seam mining, the present invention provides a very close-distance coal seam mining surrounding rock roadway layout method

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 of arranging ultra-close seam mining surrounding-rock roadway
  • Method of arranging ultra-close seam mining surrounding-rock roadway
  • Method of arranging ultra-close seam mining surrounding-rock roadway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be further described below in conjunction with specific examples.

[0031] A surrounding rock roadway layout method for extremely close-distance coal seam mining, which is divided into three roadway layout methods according to the relative position of the lower coal seam roadway and the goaf in the upper mining area, including the staggered roadway layout method, overlapping roadway layout method and Layout of internal staggered roadway:

[0032] (1) Layout of staggered roadway:

[0033] According to the position of the goaf in the upper mining area, the side next to the gob is the upper coal roadway, and the lower coal roadway is arranged outside the upper coal roadway, that is, the lower coal roadway is located outside the lower layer of the goaf and below the upper coal pillar;

[0034] (2) Overlapping roadway layout:

[0035] The lower seam coal roadway and the upper seam coal roadway are overlapped on the plane, and the length of the up...

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 of arranging an ultra-close seam mining surrounding-rock roadway. Three roadway arrangement modes are used according to the relative position of a lower seam roadway and a gob of an upper mining zone and include an exterior-alternate roadway arrangement mode, an overlapping roadway arrangement mode and an interior-alternate roadway arrangement mode; in two case oftwo ultra-close lower seams and ultra-close seam group lower seams in upper, middle and lower levels, the above three different roadway arrangement modes are used respectively according to different upper pillar widths. The method provided herein helps provide a complete assistant technique of mining ultra-close lower seams; reliable technical guarantee is provided for the safe stoping of the ultra-close lower seams; normal production linking of shafts is guaranteed; significant economic benefit is created; safety, efficiency and economy of ultra-close seam mining are also improved.

Description

technical field [0001] The invention relates to the field of coal mining surrounding rocks under coal mines, in particular to a method for arranging surrounding rock roadways for ultra-short-distance coal seam mining, which is suitable for mining ultra-short-distance coal seams in existing coal mining. Background technique [0002] Now, close-distance coal seams are quite common in our country. The so-called short-distance coal seam refers to two or more layers of coal seams distributed very close together, and the roof thickness of the lower coal seam is generally only a few meters thick. It is more difficult. Due to the broken roof of the coal seam at close distance, the stability is poor, and it is easy to break and fall prematurely after being supported by the bracket. [0003] For coal seam group mining, when the distance between coal seams is large, the mining of the upper coal seam will have little impact on the mining of the lower coal seam, and the mine pressure w...

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): E21C41/18E21D15/00E21D15/02E21F15/00
Inventor 曹宇星任超刘建君赵海荣单泽宇
Owner DATONG COAL MINE GRP
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