Unlock instant, AI-driven research and patent intelligence for your innovation.

Device for preventing gas extraction drilling hole collapse and using method thereof

A technology for gas extraction and hole collapse, which is used in gas discharge, safety devices, mining equipment, etc., can solve the problems of complex structure and single effect of supporting devices, and achieve the effect of easy promotion, remarkable effect and reducing wear and tear.

Pending Publication Date: 2021-04-20
陕西煤业股份有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In engineering practice, although some borehole support devices have been used, the existing support devices have complex structures and single effects

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
  • Device for preventing gas extraction drilling hole collapse and using method thereof
  • Device for preventing gas extraction drilling hole collapse and using method thereof
  • Device for preventing gas extraction drilling hole collapse and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Such as Figure 1 to Figure 4 As shown, the device for preventing gas drainage borehole collapse of the present invention includes segmented support assemblies, each of which includes a grouting bag 1, a drainage pipe 2 and a grouting Pipe 3, the grouting bag 1 includes a bag body 1-1, the inner side of the bag body 1-1 forms a sealed grouting chamber 1-2, and the grouting chamber 1-2 is provided with a hollow Pipeline 1-3, the extraction pipe 2 is set in the hollow pipeline 1-3, the grouting pipe 3 is set in the grouting chamber 1-2, and is located in the grouting chamber 1-2 A grout outlet is provided on the inner grouting pipe 3, and a plurality of axial recesses 1-5 are formed on the outer side of the bag body 1-1.

[0043] During specific implementation, in the gas drainage borehole, by designing the support assembly with the recesses 1-5, the hole wall can be effectively supported to prevent the hole from collapsing, and at the same time, a channel can be provide...

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 device for preventing gas extraction drilling hole collapse and a using method thereof. The device comprises sectional type supporting assemblies, each supporting assembly comprises a grouting bag, an extraction pipe and a grouting pipe, each grouting bag comprises a bag body, a sealed grouting cavity is formed in the inner side of each bag body, a hollow pipeline is arranged in each grouting cavity, the extraction pipe is arranged in the hollow pipeline, the grouting pipe is arranged in the grouting cavity, a grout outlet is formed in the portion, located in the grouting cavity, of the grouting pipe, and a plurality of axial concave parts are formed in the outer side of the bag body. The device is simple in structure, reasonable in design, convenient to implement, capable of being applied to coal mine gas extraction, capable of effectively preventing hole collapse of gas extraction drilled holes in combination with a using method, remarkable in effect and convenient to popularize.

Description

technical field [0001] The invention belongs to the technical field of gas drainage in coal mines, and in particular relates to a device for preventing gas drainage drilling from collapsing and an application method thereof. Background technique [0002] Hole collapse in gas drainage drilling is a phenomenon that easily occurs when gas drainage holes are drilled in soft coal seams. Hole collapse will cut off the flow channel of gas, resulting in abnormal operation of drilling tools and seriously reducing the efficiency of gas drainage. For the complex situation in the hole that occurs during the drilling process, geological factors are the internal factors of its occurrence, and the complexity and degree of the occurrence vary with different rock and soil conditions. Coal and rock masses at different depths in boreholes have in-situ stress, and the effect of in-situ stress is universal. Due to the formation of the borehole, the coal and rock mass around the hole wall is des...

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): E21F7/00E21B33/13E21B41/00
Inventor 王宁王世斌张森屈永利刘长来尹伟林万近矿吴满院秦绅翔王钻研雷萌莉
Owner 陕西煤业股份有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com