Gas drainage drill hole arrangement method for large-section tunnel passing through small-included-angle coal seam

A technology for coal seam gas drainage and drilling holes, which is applied in the fields of gas discharge, safety device, earth-moving drilling, etc., can solve the problems of low coal seam gas drainage efficiency, etc., so as to improve the gas drainage efficiency, save time, and reduce difficulty. Effect

Active Publication Date: 2021-02-05
HUNAN UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a large-section tunnel through small angle coal seam gas

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
  • Gas drainage drill hole arrangement method for large-section tunnel passing through small-included-angle coal seam
  • Gas drainage drill hole arrangement method for large-section tunnel passing through small-included-angle coal seam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Please refer to the attached figure 2 , This embodiment provides a method for arranging boreholes for gas drainage of large-section tunnels passing through coal seams with small angles.

[0027] A large-section tunnel through a small angle coal seam gas drainage drilling arrangement method, including:

[0028] Open the main hole 1 of the tunnel;

[0029] Set up a flat guide tunnel 2 on the side of the main tunnel face 11 farther away from...

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 discloses a gas drainage drill hole arrangement method for a large-section tunnel passing through a small-included-angle coal seam. The method comprises the steps that a main hole of a tunnel is formed; a flat guide tunnel is formed in the side, away from the coal seam, of a main hole face; a main hole drill hole is formed in the main hole face, and a drainage pipeline is installed for gas drainage; a flat guide hole drill hole is formed in a flat guide hole face, and the drainage pipeline is installed for gas drainage. According to the gas drainage drill hole arrangement methodfor the large-section tunnel passing through the small-included-angle coal seam, the gas drainage is conducted on the side, close to the coal seam, of the main hole face through the main hole drill hole formed in the main hole face, and the gas drainage is conducted on the side, far away from the coal seam, of the main hole face through the flat guide hole drill hole formed in the flat guide holeface. The drilling depth of the side, far away from the coal seam, in the main hole is greatly reduced, the drilling construction difficulty is lowered, the gas drainage time is effectively saved, andthe gas drainage efficiency is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of tunnel engineering, in particular to a method for arranging boreholes for gas drainage in small-angle coal seams in large-section tunnels. 【Background technique】 [0002] The construction of tunnels crossing gas-fired coal-measure strata occurs from time to time in the construction of highway traffic in mountainous areas in my country. The scientific design and safe construction of gas work areas are the controlling engineering of tunnel construction, which plays a vital role in the safety and reliability of tunnels. effect. According to the relevant national guidelines, the "four-in-one" gas prevention and control measures must be strictly implemented when the tunnel passes through the gas work area, and the tunnel excavation construction can only continue after the inspection indicators meet the standards. At present, most of the tunnel gas control methods follow the mine gas control measures, that is...

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): E21F7/00
CPCE21F7/00Y02E10/20
Inventor 李树清黄飞袁志刚李波
Owner HUNAN 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