Process for stoping low coal seam containing ferric sulfide concretions and hard parting bands and hydraulic support thereof for fully mechanized mining

A technology of hydraulic support and iron sulfide, which is applied in the direction of pillar/support, ground mining, mining equipment, etc., can solve the problems of poor efficiency, high labor intensity, poor safety, etc.

Inactive Publication Date: 2010-07-14
兖矿能源集团股份有限公司
View PDF1 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main mining methods still use traditional drilling blasting and m

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
  • Process for stoping low coal seam containing ferric sulfide concretions and hard parting bands and hydraulic support thereof for fully mechanized mining
  • Process for stoping low coal seam containing ferric sulfide concretions and hard parting bands and hydraulic support thereof for fully mechanized mining
  • Process for stoping low coal seam containing ferric sulfide concretions and hard parting bands and hydraulic support thereof for fully mechanized mining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The present invention will be further described below in conjunction with drawings and embodiments.

[0045] exist Figure 1~3 The arrangement of fully mechanized mining equipment in the coal mining face of the present invention is shown in the thin coal seam recovery technology containing iron sulfide nodules and hard gangue. Its fully mechanized mining equipment is composed of drum shearer 1, hydraulic support 2 and scraper conveyor 3 and so on. In order to solve the problem of comprehensive mechanized mining of thin coal seams containing iron sulfide nodules and hard gangue, the following new measures are mainly adopted in fully mechanized mining equipment and coal mining technology:

[0046] a. The drum shearer adopts a high-power shearer, a high-strength wide drum, and a shallow cutting depth to cut coal, that is, the cutting depth is smaller than the width of the drum.

[0047] b. The hydraulic support adopts the cover-type hydraulic support, which is pushed quanti...

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

PropertyMeasurementUnit
Widthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a process for stoping low coal seams containing ferric sulfide concretions and hard parting bands, which adopts a fully mechanized mining process to mine coal. Working face equipment comprises a drum shearercoal-mining machine, a hydraulic support, a scraper conveyor, and the like, wherein the drum shearercoal-mining machine adopts a wide high-power high-strength drum for narrow cutting and deep cutting; the hydraulic support adopts a hydraulic shield support for advancingmoving quantitively by in different times and stretching the support in one-stepce; and water is injected into the working face for softening before stoping. The fully mechanized mining level can be enhanced by adopting the scraper conveyor with a middleedian plate straightly arranged at the head and the tail of the scraper conveyor, and a radio remote control method for the coal-mining machineshearer with the working face remote-controlled in segments automatically. The advancing jack hydraulically-controlled loop of the hydraulic support is formed into a separately push/pull and quantitively grouped advance charging loop bycomprises an adjacent support pilot control reversing valve, a differential valve, a quantitive cylinder and an alternate valve which form a separately push/pull and quantitively grouped advance charging loop. The invention can realize the fully mechanized mining forof the low coal seams containing the ferric sulfide concretions and/or the hard parting bands, and solves the difficult problem which is not solved at home and abroad for a long time. The invention can be used for mining low coal seams containing other concretions, ordinary low coal seams, medium-thickness coal seams and high coal seams.

Description

technical field [0001] The invention relates to a coal mining face mining process in a thin coal seam, in particular to a thin coal seam mining process capable of fully mechanized mining in a thin coal seam containing iron sulfide nodules and hard gangue and can meet the requirements of Fully mechanized mining hydraulic supports required by this special process. Background technique [0002] Coal is the main energy source in our country. Coal accounts for about 94% of the proven fossil energy resources. Coal resources will keep my country's coal-based energy structure unchanged for quite a long time. Thin coal seams account for more than 46% of the country's proven coal reserves. With the obvious reduction of medium-thick coal seam reserves in recent years, thin coal seam mining will play an important role in maintaining coal production and meeting the needs of national economic development. At present, the complete set of equipment and technology for fully mechanized mini...

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): E21C41/16E21C25/06E21F13/00E21D15/44
Inventor 徐瑞峰马晓东王道广张崇宏谢波魏立赵峰马今年
Owner 兖矿能源集团股份有限公司
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