Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method

A comprehensive mechanization and large mining height technology, applied in ground mining, earth drilling, underground mining, etc., can solve problems such as coal wall collapse, and achieve the effect of simple support, high strength and high safety factor

Active Publication Date: 2012-04-18
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of coal wall collapse caused by final mining in the working face of soft coal seam with long wall and large mining hei

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
  • Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method
  • Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method
  • Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] like image 3 , 4 It is shown that the comprehensive mechanized coal mining method at the end of the soft coal seam with a hardness coefficient of less than 1.5 and a long wall of 3.5 meters or more is as follows:

[0017] 1. The layout of the comprehensive mechanized large mining height coal mining working face adopts longwall mining with a length of more than 100 meters, at least one entry and one return working face layout is adopted, and the roof is managed by the full spanning method.

[0018] 2. The end-mining stage from the beginning of end-mining to the stop of advancing support 1 is consistent with the normal end-mining process, that is, the first net on the top of support 1 starts at a distance (20m) from the mining face to the stop line. In the third trip, the double net and the wire rope are started. Finally, after the metal net 7 behind the tail beam of the support is compacted, it reaches the final mining line, stops coal cutting and moves the pull frame ...

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 relates to a coal mine underground end mining method, in particular to a soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method, and solves the problem of coal wall collapse brought by end mining under the condition of a working face of a long-wall high-mining-height soft coal seam existing in the prior art. The mining height of the high-mining-height long-wall working face is more than over 3.5 m; a feed-return working face arrangement mode is at least adopted; and after the working face is pushed to an end mining line, a bracket stops to move forwards, then a tunneling machine is arranged at the tail of the working face, and a support dismantling passage is made by using a comprehensive tunneling process to finish end mining. The process has high capacity of adapting to complex geological conditions. The place and time of end mining can be flexibly selected according to the geological conditions and a roof pressure change rule, and the safety coefficient is high.

Description

[0001] technical field [0002] The invention relates to an underground coal mining technology, in particular to a comprehensive mechanized coal mining method with long walls and large mining heights in soft coal seams. Background technique [0003] At present, there are two main ways for the final mining of comprehensive mechanical coal mining face in my country's coal mines: the first is the net laying at a certain distance from the final mining line that has been used in the final mining of fully mechanized mining face, and the net is laid behind the tail beam. Stop pulling the frame, then remove the frame of the bracket and the slide, cut out the withdrawal passage with a coal shearer, and then carry out the support withdrawal passage. The second is the retraction installation process of multi-channel multi-channel rubber-tyred trucks used in the fully mechanized mining face of the Shendong mining area in my country. That is, at the stop line of the mining face, two auxi...

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
IPC IPC(8): E21C41/16
Inventor 杨文斌王永革张育恒王家学田书龙胡红伟
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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