Large-diameter directional long drill hole extraction method for mining body gushing out of gas roof

A long-drilling, large-diameter technology, applied in the fields of mining fluids, gas discharge, mining equipment, etc., can solve the problems of affecting the release of high-yield potential, low efficiency, large engineering volume, etc., to improve the scope of application, reduce gas concentration, improve The effect of extraction success rate

Active Publication Date: 2019-05-10
CHINA COAL TECH ENG GRP CHONGQING RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the increase of the mining intensity and coal seam depth of the working face, the amount of gas gushing out from the mining-affected body (referred to as the mining body) near the working face increases sharply. Hole drainage, etc.) has a large amount of work and low efficiency, which seriously affects the release of high production potential. Especially after the state implements regulations such as simplified ventilation and removal of tail lanes, this contradiction has become more prominent. It is urgent to find more economical and efficient mining areas for gas gushing Drainage technology

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
  • Large-diameter directional long drill hole extraction method for mining body gushing out of gas roof
  • Large-diameter directional long drill hole extraction method for mining body gushing out of gas roof
  • Large-diameter directional long drill hole extraction method for mining body gushing out of gas roof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] Such as figure 1 As shown, the extraction method of large-diameter directional long drilling holes on the gas roof gushing out of the mining body according to the present invention specifically includes the following steps:

[0043] S1: Calculate and determine the basic parameters of large-diameter directional long drilling on the roof, including the longitudinal height of the hole layout area, the number of drilling holes, the selection of drilling layers in the horizontal section and the spatial layout, drilling site and drilling parameters;

[0044] (1) Determination of the vertical height of the hole layout area

[0045] In order to effectively control the gas in the upper corner, the long drilling holes for drainage should be arranged in the roof strata near the return air roadway of the working face. In order to ensure the ex...

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 a large-diameter directional long drill hole extraction method for a mining body gushing out of a gas roof, and belongs to the technical field of coal mining. The method comprises the following steps: S1, calculating and determining basic parameters of the large-diameter directional long drill hole of the roof; S2, before working face stoping, drilling to a coal seam roofrock stratum at a large-dip-angle upward pitching; and S3, gradually adjusting the drilling angle through the orientation technology so that the horizontal section of the drilled hole is arranged in the advancing direction of the working face, and then gas extraction is completed. The roof large-diameter directional long drill hole extraction success rate can be increased, the gas concentration ofa working face is reduced, the safety coefficient of the operation environment is increased, and economic benefits are increased.

Description

technical field [0001] The invention belongs to the technical field of coal mine mining, and relates to a large-diameter directional long drilling method for gas gushing out from a mining body. Background technique [0002] With the increase of the mining intensity and coal seam depth of the working face, the amount of gas gushing out from the mining-affected body (referred to as the mining body) near the working face increases sharply. Hole drainage, etc.) has a large amount of work and low efficiency, which seriously affects the release of high production potential. Especially after the state implements regulations such as simplified ventilation and removal of tail lanes, this contradiction has become more prominent. It is urgent to find more economical and efficient mining areas for gas gushing Extraction technology. [0003] High-level drilling on the roof is one of the effective technical means to control gas in goafs. The current directional drilling equipment in coal...

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): E21F7/00E21B43/00G06F17/50
Inventor 李日富林府进付军辉王然孙海涛张玉明晁建伟贾泉敏孙锐耿延辉郭恒刘洋吕伟伟江万刚刘文
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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