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

Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces

A fully mechanized coal mining face and transport trough technology, which is applied in ground mining, earth drilling, underground mining, etc., can solve the problems of unbendable coal transportation routes and large rotation angles of transport troughs, and solve the problem of scraper conveyors swaying effect

Inactive Publication Date: 2012-07-04
铁法煤业(集团)有限责任公司晓南矿
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The advantages of the present invention are: using multi-section straight roadways to form arc-shaped roadways as auxiliary roadways, during the rotary mining process, the rotary mining arcs are segmented to adjust the inclination and mining, which solves the problem that the rotation angle of the transportation channel is too large and the coal transportation route cannot be bent. , forming an arc section roadway suitable for the normal advancement of the reload conveyor

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
  • Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces
  • Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces
  • Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The embodiment of the method for transporting along the trough and rotating the unequal-length fully mechanized mining face provided by the present invention is as follows:

[0015] See figure 2 , 3 , an arc-shaped auxiliary roadway is set at the corner of the L-shaped joint working face where the working face 1 and the working face 2 form an included angle β of 70°-90°, and the length of the entire arc-shaped auxiliary roadway is 248m ( image 3 In order to meet the requirements of rotary mining L-shaped joint working face of 75°-90°, it is necessary to ensure the safety of transportation equipment. Smooth operation, the arc auxiliary roadway is transformed into 4 straight roadways, with a total length of 186m ( Figure 4 point a to point e), plus the transport tunnel roadways connected at both ends (to the tangent point), a total of 6, 5 turning points, the turning angle α between two adjacent straight roadways, and the straight roadways at both ends and the transp...

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 conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces, and is characterized in that the turning part of the L-shaped working surface is provided with an arc auxiliary roadway formed by a plurality of linear roadways, wherein the rotation angle between adjacent linear roadways is 13-17 degrees; the length of each linear roadway not only exceeds the length of a transfer conveyor, but also does not exceed the maximal conveying length of a small scraper conveyor; the rotation center is subjected to secondary confirmation through rotation slope regulation, the hydraulic support is increased during the regulation process of the rotation center; the state of the scraper conveyor is regulated through the auxiliary hydraulic cylinder; and a timely top contact frame moving mode is adopted at the rotation center region of the operating surface, and maintaining is strengthened by an auxiliary supporting mode in the range of the section. According to the invention, the arc roadways are formed by a plurality linear roadways, the rotary stoping arc subsection is subjected to slope regulating and stoping, and the difficulties that the rotation angle of the conveyer gateway is over large and the coal conveying path can not be bent are solved. The rotation center is pushed appropriately, a top plate at the rotation center region is maintained greatly, and the problems that the support pushing quantity at the rotation center is less and is required to be supported repeatedly, and the top plate is difficult to maintain are solved.

Description

technical field [0001] The invention relates to an underground coal mining method, in particular to a unequal-length fully mechanized working face transporting along a trough and a large-angle rotary mining method by combining a trending longwall fully mechanized working face and an inclined longwall fully mechanized working face. Background technique [0002] In coal mines, the preparation of new mining areas is to determine the working face according to the geological conditions, the mining replacement location and the system conditions that have been formed, for example, such as figure 1 As shown, according to the conventional design in the past, the preparation area should be arranged into three working faces of the second-stage mining area (W 3 711-1, W 3 711-2, W 3 711-3 working face) and a working face in the first phase mining area (W 3 707 working face), a total of four adjacent working faces need to be arranged. According to this conventional design, there are ...

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): E21C41/16
Inventor 李延奎李鑫王德民金玉华胡成忠康成靳瑞刘铁臣宋文官贾东修王则行鲁连喜娄凤坡王业繁
Owner 铁法煤业(集团)有限责任公司晓南矿
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