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

Optimal selection method for roof cutting pressure relief gob-side entry retaining ventilation mode

A technology of roof cutting, pressure relief and ventilation, which is applied in mine/tunnel ventilation, earthwork drilling, complex mathematical operations, etc. It can solve problems such as failure to completely seal goafs, achieve stable wind flow, strong disaster resistance, Technically Advanced Effects

Inactive Publication Date: 2020-09-01
TAIYUAN UNIV OF TECH
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the side section of the roadway is the caving zone of the goaf, the goaf is completely exposed in the roadway, forming a completely open state. Zone not completely closed

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
  • Optimal selection method for roof cutting pressure relief gob-side entry retaining ventilation mode
  • Optimal selection method for roof cutting pressure relief gob-side entry retaining ventilation mode
  • Optimal selection method for roof cutting pressure relief gob-side entry retaining ventilation mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention provides an optimal method for roof cutting, pressure relief and gob-side entry ventilation. Firstly, according to geological information parameters: coal seam thickness, coal seam dip angle α, coal seam direction, gas parameters, hydrological conditions and other parameters required during construction, a detailed ventilation implementation plan is formulated. Do a good job in the preparatory work before implementation, and consider dealing with cracks, faults, water and other risk factors.

[0020] A method for optimizing roof cutting and pressure relief along gob-side entry ventilation, comprising the following steps:

[0021] Step 1: Determine the comparison data column; determine the number n of ventilation schemes and the number m of influencing factors of the working face after roof cutting and pressure relief and gob-side entry retention; formulate based on the value of the i-th scheme at the K-th influencing factor compare data column {x ...

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 belongs to the technical field of mine ventilation, and particularly relates to an optimal selection method for a roof cutting pressure relief gob-side entry retaining ventilation mode.The method specifically comprises the following steps of S1, determining a comparison data column, determining the number n of ventilation schemes and the number m of influence factors of the workingface after gob-side entry retaining after roof cutting and pressure relief, and formulating a comparison data column according to the numerical value of the ith scheme at the Kth influence factor; S2,determining a reference data column by adopting an expert analysis method; and S3, calculating the correlation number of the data column of the influence factors of each scheme with respect to the reference data column to obtain the correlation degree, wherein the ventilation scheme with the large correlation degree is the optimal ventilation mode. According to the optimal selection, the workingface ventilation system is optimized, so that the optimized ventilation system adapts to the production capacity, meanwhile, the technical requirements of gas extraction and spontaneous combustion fire prevention and control are met, the advanced, reasonable and reliable technology is achieved, the high disaster resistance is achieved, and the ventilation system with sufficient air volume and stable air flow is formed.

Description

technical field [0001] The invention belongs to the technical field of mine ventilation, and in particular relates to an optimal ventilation method for roof cutting, pressure relief and gob-side entry retention. Background technique [0002] Under the technical conditions of roof cutting and roadway mining without coal pillars, the ventilation mode of the working face can usually adopt "Y" type and "W" type ventilation. Since the side section of the roadway is the caving zone of the goaf, the goaf is completely exposed in the roadway, forming a completely open state. The area was not completely closed. Different ventilation methods have an important impact on air leakage, gas emission and spontaneous combustion in gobs. Therefore, a reasonable choice of ventilation methods is very important for safe production. Contents of the invention [0003] The invention proposes a method for rationally selecting a ventilation mode under complex underground environment and many inf...

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): E21F1/00G06F17/15
CPCE21F1/00G06F17/15
Inventor 王飞李子文赵亮高亚斌刘红威闫晶晶
Owner TAIYUAN UNIV OF 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