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

Moist curing method for accelerating subsidence and stability of coal gangue filling reclamation

A processing method and technology for coal gangue, which are applied in the field of coal gangue agriculture or forestry reclamation, can solve the problems of unfavorable engineering characteristics of coal gangue and uneven settlement of the surface, and achieve the purpose of solving the uneven settlement of the surface, reducing instability and instability. The effect of uniform settlement and reduction of reclamation costs

Active Publication Date: 2016-07-27
CHINA UNIV OF MINING & TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wetting treatment method that accelerates coal gangue filling reclamation and settlement stability, solves the problem of uneven settlement of the ground surface in land reclamation in mining areas and the control problem of unfavorable engineering characteristics of coal gangue, and eliminates the problem of coal gangue wet swelling characteristics impact, reducing reclamation costs

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
  • Moist curing method for accelerating subsidence and stability of coal gangue filling reclamation
  • Moist curing method for accelerating subsidence and stability of coal gangue filling reclamation
  • Moist curing method for accelerating subsidence and stability of coal gangue filling reclamation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Applicable conditions

[0021] The invention is particularly suitable for agricultural / forestry reclamation in high-water-level coal mining areas in eastern my country, because these coal mining subsidence areas often have accumulated water, and water is a necessary condition for wet treatment.

2. Specific implementation

[0022] (1) Site construction preparation; including removing sundries, reeds and cattails in the basin, removing silt, transplanting trees, demolishing or relocating waterways and certain buildings and structures, etc., to prepare a good external environment for the construction of earthmoving machinery .

[0023] (2) Stripping the topsoil layer; during agricultural reclamation, strip off the topsoil layer (cultivation layer) first, and stack them together. Then peel off the core soil layer and stack it in another place; the thickness of the peeling should not be less than 1 meter.

[0024] (3) Fill coal gangue to the design elevation of 1-Sw f...

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 provides a moist curing method for accelerating subsidence and stability of coal gangue filling reclamation, and belongs to the method for agricultural or forestry reclamation of coal gangues. The moist curing method comprises the following steps: after filling a subsidence land by using the coal gangues, consciously filling water to soak a coal gangue aggregate, and accelerating subsidence and stability of the coal gangues; and stripping collapse surface soil by 1.0 meter at first before the rainy season, pouring the coal gangues in a collapse pit until the distance from the coal gangues to an earth surface by a designed elevation, leveling a coal gangue site, filling water in the site until coal gangue bodies are submerged, maintaining until the rainy season is finished, compacting for 4-5 times by using compacting equipment, and finally refilling the collapse pit by using the surface soil and leveling the site. The moist curing method has the advantages that (1) the collapse pit is refilled with the coal gangues at a time, and layered filling compaction is not required, so that reclamation cost is greatly reduced; (2) adverse effects of hydrophilic substances in the coal gangues to subsidence are eliminated, uniformity of subsidence is guaranteed to a maximum extent, compaction times are reduced, and leveling of a farmland is guaranteed; and (3) effects of rising and falling of groundwater level to coal gangue filling reclamation lands are reduced.

Description

technical field [0001] The invention relates to a coal gangue agricultural or forestry reclamation method, in particular to a wet treatment method for accelerating coal gangue filling, reclamation and settlement stability. Background technique [0002] Coal gangue is solid waste generated during coal mining and washing. It is used as filling material to fill coal mining subsidence areas or similar low-lying lands, and then reclaim them as agricultural land after covering with soil. This not only enables the treatment and utilization of coal gangue waste, but also reclaims the land damaged by coal mining, so the reclamation of coal gangue filling is widely accepted. However, when a large area of ​​coal gangue is filled for reclamation, the surface often has uneven settlement, which seriously affects the promotion of this technology. At present, the common solution is layered filling and compaction to reduce the porosity of coal gangue, but the cost of layered filling and com...

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): B09B3/00
CPCB09B3/00
Inventor 张绍良侯湖平丁忠义陈浮张黎明
Owner CHINA UNIV OF MINING & TECH
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