Gas extraction method through drilling along coal seam on basis of extraction pipeline valve control
A technology for drainage drilling and gas drainage, which is used in gas discharge, mining equipment, earthwork drilling, etc., can solve the problems of uneven and inefficient gas drainage along the coal seam, and achieve uniform and efficient drainage Effect
Active Publication Date: 2020-01-14
NORTH CHINA INST OF SCI & TECH
9 Cites 2 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Method used
View more
Abstract
The invention discloses a gas extraction method through drilling along a coal seam on the basis of extraction pipeline valve control. The method comprises the following steps that 1) gas along the coal seam is uniformly extracted from an angle of the extraction drilling arrangement in an extraction process, an air intake roadway and an air return roadway start to be tunneled from the position of astopping line, along with tunneling of the roadways, extraction drilling holes are sequentially arranged on the air inlet roadway side, when tunneling is advanced to the position of an open-off cut,the extraction drilling arrangement is ended, an extraction valve adjacent to the position of the stopping line is adjusted down, an extraction valve adjacent to the position of the open-off cut is adjusted up, more negative pressure is distributed to the extraction drilling holes adjacent to the open-off cut, and an extraction flow in the extraction drilling holes adjacent to the open-off cut position is increased; and 2) the gas along the coal seam is efficiently extracted according to the pressure distribution rule on the ore and the permeability coefficient of the coal seam, valves, adjacent to a working face area, of a pressure relief area and valves of a pressurization area are closed, valves, adjacent to the pressurization area, of the pressure relief area are opened all, and the purpose of efficient gas extraction is achieved.
Application Domain
Gas removal
Technology Topic
CoalDrill hole +3
Image
Examples
- Experimental program(1)
Example Embodiment
PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
Extraction process of peanut-skin red pigment
InactiveCN105062126AUniform extractionExtract thoroughly
Owner:CHONGQING DOUHAO BIOTECH
Drug rash plasma exosome protein and kit thereof
Owner:AIR FORCE MEDICAL UNIV
Complete equipment for extracting corn stalk fibers through physical method
InactiveCN106988138Aefficient extractionGuaranteed separation efficiency
Owner:吉林省民昌农业科技有限公司
Automatic clamping and centering rubber tapping machine with incongruous crank
PendingCN113475351Aefficient extractionTapping movement is stable
Owner:HAINAN UNIVERSITY
Resin adsorption synthesis technology for extracting tea polyphenols from discarded fresh tea leaves
ActiveCN107617026Aefficient extraction
Owner:雅安市云茶供应链管理有限公司
Method for extracting silver from gold separating residues
InactiveCN113528840Aefficient extractionTechnical indicators are stable
Owner:CENT SOUTH UNIV
Classification and recommendation of technical efficacy words
- efficient extraction
- Uniform extraction
Preparation method of vanadium pentoxide
Owner:HEBEI IRON AND STEEL
Fractured soft low-permeability coal seam roof or floor staged fracturing horizontal well coal bed gas extraction method
Owner:XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
Feature extracting method based on improved HHT transformation
Owner:TIANJIN UNIV
Carbon-ceramic utilized absorption material
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Extraction device for efficiently extracting moringa leaf proteins
PendingCN107365350Aefficient extraction
Owner:ZHENGZHOU UNIV