Reusable expansion-type paste drilling-hole sealing material based on coal gangue powder

A technology of coal gangue powder and sealing material, which is used in sealing/isolation, earthwork drilling, solid waste management, etc., can solve the problems of voids, pollute the environment, and high technical requirements for hole sealing personnel, and achieve the effect of increasing viscosity.

Inactive Publication Date: 2018-09-28
SHANDONG UNIV OF SCI & TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a problem of lax sealing of holes in gas drainage, resulting in serious gas leakage during the extraction process, rapid decay of gas concentration, difficulty in extraction, and low efficiency
[0003] At present, the drilling and sealing technologies commonly used in my country's coal mine gas drainage include: cement mortar sealing, polyurethane sealing, hole sealing, etc. Although these t

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: The reusable expansion type paste drilling sealing material based on coal gangue powder provided by the present invention includes dry mix and wet mix. According to the weight ratio, the required dry mix is: 7.5 parts of coal gangue powder, 1.49 parts of water-retaining agent, 0.3 parts of cellulose, 0.08 parts of expansion agent, and 0.08 parts of silicate; the required wet mix is: 9 parts of water, 0.54 parts of resin, and 0.18 parts of coupling agent.

[0041] The preparation steps of the reusable expansion paste drilling sealing material are as follows:

[0042] a. Measure coal gangue powder, silicate, expansion agent, cellulose, and water retention agent in proportion, and mix them to make a dry mix for later use;

[0043] b. Take water, coupling agent, and resin in proportion, and mix them to make a wet mixture for later use;

[0044] c. Mix the obtained dry mixture with the wet mixture according to the weight ratio of 1:3, and fully stir evenly for...

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 reusable expansion-type paste drilling-hole sealing material based on coal gangue powder. The material comprises a hole-sealing dry-mixed material and a hole-sealing wet-mixed compound, and the dry-mixed material comprises the following components: 7.5-8 parts of coal gangue powder, 0.08-0.1 part of a silicate, 0.08-0.1 part of an expanding agent, 0.3-0.35 part of cellulose, 1.49-1.55 parts of a water-retaining agent, 9-9.5 parts of water, 0.18-0.2 part of a coupling agent and 0.54-0.57 part of resin. The reusable expansion-type paste drilling-hole sealing material provided by the invention can permeate into small cracks around drilling holes under the action of grouting pressure for achieving the purpose of plugging; the cellulose prepared by mixing methyl cellulose and hydroxyethyl cellulose is adopted, so that the viscosity of the system and the stability of the prepared paste are improved; and a super absorbent polymer (SAP) is used as the water-retainingagent, so that water is not easily lost, and the purpose that the material can be expanded again by water injection when water is lost can be achieved.

Description

technical field [0001] The invention relates to a reusable expansion type paste drilling sealing material based on coal gangue powder, in particular to a method for preparing and using a reusable expansion type paste drilling sealing material based on coal gangue powder, which belongs to coal seam gas control technology field. Background technique [0002] my country is the main coal-producing country in the world, and it is also one of the most serious coal and gas outburst countries. The structure of my country's coal reservoirs is complex, and it is "three lows and one high" (coal seam pressure is low, coal seam permeability is low, and the proportion of long intentional cracks formed under enhanced measures such as water fracturing is low; coal seams generally have Higher adsorption force) physical characteristics. At present, gas drainage is the most effective measure to prevent and control gas disasters. The primary task of gas drainage is to construct and drill holes...

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): C04B26/28C04B18/12E21B33/13
CPCC04B18/12C04B26/285E21B33/13C04B14/04C04B2103/0068C04B2103/465C04B22/002C04B24/42C04B24/24Y02W30/91
Inventor 倪冠华李钊程卫民王刚解宏超孙茜
Owner SHANDONG UNIV OF SCI & TECH
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