Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Longwall Mining Method of Ultra-thin Coal Seam Based on n00 Construction Method

A mining method and a technology of extremely thin coal seams, which are applied in ground mining, mining equipment, earthwork drilling, etc., can solve the problems of difficult roadway excavation, waste of coal resources, and unrecoverable coal pillars, so as to improve coal mining efficiency and reduce Coal mining cost, effect of eliminating transportation cost

Active Publication Date: 2020-07-31
BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY & ENVIRONMENTAL SCI RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And in order to ensure that the coal seam in the extremely thin coal seam is fully exposed, the roadways excavated in the extremely thin coal seam are semi-coal rock roadways, which are difficult to excavate, take a long time to excavate, and have low coal mining efficiency and high cost; at the same time, coal Columns are left in the roadway and cannot be recycled, resulting in waste of coal resources

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
  • Longwall Mining Method of Ultra-thin Coal Seam Based on n00 Construction Method
  • Longwall Mining Method of Ultra-thin Coal Seam Based on n00 Construction Method
  • Longwall Mining Method of Ultra-thin Coal Seam Based on n00 Construction Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0045] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanying drawings directions for the example described above. It will be appreciated that if the illustrated device is turned over so...

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 present disclosure provides an extremely thin coal seam longwall mining method based on the N00 method, and relates to the technical field of mining. The mining method comprises the following steps: performing an advanced operation on a working face along a direction perpendicular to the working face to form a first roadway, supporting the first roadway to form a first trough; forming an advanced working area in the first trough; and using a shearer In the advanced working area, the coal is mined simultaneously on both sides of the first trough along the direction parallel to the working face, and the mined coal is transported to the scraper conveyor; the shearer on one side of the first trough runs When reaching the first preset position, the working face is blasted to form a second roadway, and the second roadway is supported to form a second trough; the shearer on the other side of the first trough runs to the second preset position. When in position, blast the working face to form the third roadway, and support the third roadway to form the third trough. The mining method of the present disclosure can avoid excavating the roadway in advance, reduce the cost of coal mining, improve the efficiency of coal mining, and avoid waste of resources.

Description

technical field [0001] The present disclosure relates to the technical field of mining, in particular, to a longwall mining method of an extremely thin coal seam based on the N00 method. Background technique [0002] As one of the main energy sources, coal is widely used in daily life and industrial production. With the development of science and technology, people's demand for coal resources is increasing, and efficient mining of coal resources is particularly important. [0003] Ultra-thin coal seam is a common form of coal seam distribution. Usually, the ultra-thin coal seam is mined by using the high-grade general mining face extraction technology. Before mining, it is necessary to excavate multiple roadways in advance, and leave The roadway is supported by columns. And in order to ensure that the coal seam in the extremely thin coal seam is fully exposed, the roadways excavated in the extremely thin coal seam are semi-coal rock roadways, which are difficult to excavat...

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): E21C41/18E21F15/00E21F13/06E21F1/00
CPCE21C41/18E21F1/006E21F13/06E21F15/005
Inventor 何满潮王琦王亚军刘简宁
Owner BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY & ENVIRONMENTAL SCI RES INST
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
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