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

Accurate extraction method for coal mine gas

一种煤矿瓦斯、瓦斯抽采的技术，应用在瓦斯精准高效抽采领域，能够解决煤层瓦斯抽采时空不均、瓦斯抽采钻孔设计和施工不精确等问题

Active Publication Date: 2017-08-29
CHINA UNIV OF MINING & TECH
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of this invention is to provide a precise extraction method for coal mine gas in view of the inaccurate design and construction of coal mine gas drainage drilling, which leads to uneven time and space in coal seam gas extraction, and the existence of blank areas in extraction. Accurate location of coal seam occurrence and accurate design of gas drilling holes are used to realize precise drainage of coal mine gas and improve the pertinence of gas control

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
  • Accurate extraction method for coal mine gas
  • Accurate extraction method for coal mine gas
  • Accurate extraction method for coal mine gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Such as figure 1 As shown, the precise extraction method of coal mine gas of the present invention comprises the following steps:

[0027] (a) stratum profile scanning is carried out in the area to be extracted in the coal seam; the stratum profile scan adopts a stratum profiler, and the construction site scans along the roadway driving direction in the coal seam floor roadway;

[0028] (b) Construction of stratum detection boreholes in the stratum section scanning area; said stratum detection boreholes should be constructed through the coal-seeing section until no coal slag is discharged;

[0029] (c) Depict the coal seam trend, tendency, and coal seam thickness change trend map of the area to be extracted; Combined comprehensive judgment method: first use the formation profiler to determine the trend of the coal-bearing strata, and then use the borehole coordinates to delineate the exact boundary of the coal seam;

[0030] (d) Determine the number of boreholes to be...

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

An accurate extraction method for coal mine gas is suitable for improving accuracy of coal mine gas extraction design and construction and ensuring the extraction efficiency of drill holes. According to the method, the coal seam strike, inclination tendency and coal seam thickness data of an extraction area are detected through a gyroscope and an endoscope camera firstly; then according to the up-to-standard requirements of gas extraction of a to-be-extracted area, the tracks of the drill holes are designed, constructed and traced, and the corresponding relations of drill hole design parameters and drill hole practical track parameters are obtained; secondly, according to the corresponding relations of designed drill hole parameters and practical drill hole parameters, perforated parameters are adjusted so as to enable construction to be conducted to predetermined drill hole positions; then the drill holes are connected to extraction pipelines, and the drill hole gas extraction flow and the per-meter gas extraction quantity are observed; and finally according to adjusted drill hole construction parameters and extraction data, other drill holes are designed and constructed, and after drill hole construction is completed, gas extraction is conducted in a networking mode.

Description

technical field [0001] The invention relates to a method for precise gas extraction in coal mines, especially suitable for precise and efficient gas extraction in gas-containing coal seams in coal mines, including accurate positioning of the end points of boreholes and accurate quantification of gas extraction volume and residual gas content. Thereby, the blank zone of gas drainage caused by improper drainage drilling design can be avoided. Background technique [0002] Gas drainage through boreholes is the main measure for gas control. Due to the poor air permeability of coal seams in my country, the affected area of ​​ground drilling is small, and the drainage effect is poor. Most of the drainage is carried out by constructing small-diameter boreholes underground in coal mines. These boreholes are simple in construction and large in number. But at present, the drainage effect is not ideal. The main reason for this is that the coal seam is relatively soft and the distance ...

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): E21F7/00E21B47/00E21B47/002
CPCE21B47/00E21F7/00E21B47/002E21B43/006E21B7/04E21B47/10E21B49/00
Inventor 朱传杰林柏泉高子善卢细苗
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