Method for increasing initial mining coal recovery rate of fully mechanized caving face of extremely thick coal seam

A fully mechanized caving face and extra-thick coal seam technology, applied in ground mining, special mining, earth square drilling and mining, etc., to achieve the effect of improving recovery efficiency and improving efficiency

Active Publication Date: 2018-11-13
山西西山晋兴能源有限责任公司斜沟煤矿
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a method for improving the recovery rate of coal during the initial mining of fully mechanized caving working faces in extra-thick co

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 increasing initial mining coal recovery rate of fully mechanized caving face of extremely thick coal seam
  • Method for increasing initial mining coal recovery rate of fully mechanized caving face of extremely thick coal seam
  • Method for increasing initial mining coal recovery rate of fully mechanized caving face of extremely thick coal seam

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] The embodiments of the present invention will be described in further detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0034] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "Front", "Back", "Top", "Bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating It may also imply that the pointed device or element must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "seco...

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 the technical field of coal mining, in particular to a method for increasing the initial mining coal recovery rate of a fully mechanized caving face of an extremely thick coalseam. The method for increasing the initial mining coal recovery rate of the fully mechanized caving face of the extremely thick coal seam comprises the following steps that step 1, cutting holes areformed in solid coal, the fully mechanized caving face is obtained, and drilling equipment and fully mechanized mining equipment are arranged in the fully mechanized caving face; step 2, a pluralityof blastholes of different depths are drilled in top coal of the fully mechanized caving face by the drilling equipment; step 3, explosives are loaded into the blastholes and detonate d, so that the top coal is blasted; and step 4, the step 2 and the step 3 are repeated until the top coal is caved completely. According to the method for increasing the initial mining coal recovery rate of the fullymechanized caving face of the extremely thick coal seam, a deep blasthole and shallow blasthole circulating blasting technology is adopted, and the integrity of the top coal is destroyed after blasting, so that top coal is caved completely, and the coal recovery rate at the initial mining period is increased significantly.

Description

technical field [0001] The invention relates to the technical field of coal mine mining, in particular to a method for improving the recovery rate of primary mining coal in fully mechanized caving working faces of extra-thick coal seams. Background technique [0002] The extra-thick coal seam refers to the coal seam whose thickness is greater than 8.0m. Fully mechanized top-coal caving is one of thick coal seam coal mining technologies. Its essence is to arrange a longwall working face with a mining height of 2-3m along the bottom of the coal seam (or section) in the thick coal seam, and use conventional methods for mining. The effect of mine pressure or supplemented by manual loosening method breaks the top coal above the support into loose pieces and releases it from the rear of the support, and transports it out of the working face through the scraper conveyor at the rear. Fully mechanized top-coal caving mining technology extracts the coal that needs to be extracted in ...

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): E21C41/18F42D1/08F42D3/04
CPCE21C41/18F42D1/08F42D3/04
Inventor 边俊奇何福胜马会忠兰晓江边小峰卫立刚陈志平马腾王宗贵
Owner 山西西山晋兴能源有限责任公司斜沟煤矿
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