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

Real-time monitoring and early warning system and method for failure depth of coal seam floor in mining face

A technology for mining working faces and coal seam floors, which is applied to mining equipment, earthwork drilling, mining equipment, etc., can solve problems such as inability to perform continuous observation and difficulty in achieving continuous dynamic monitoring, so as to improve work efficiency, save manpower and material resources, and improve The effect of accuracy

Active Publication Date: 2020-04-10
ANHUI UNIV OF SCI & TECH
View PDF4 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 real-time monitoring and early warning system and method for the damage depth of the coal seam floor in the mining face, so as to solve the problems that the existing technology is difficult to achieve the effect of continuous dynamic monitoring, continuous observation and disaster early warning.

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
  • Real-time monitoring and early warning system and method for failure depth of coal seam floor in mining face
  • Real-time monitoring and early warning system and method for failure depth of coal seam floor in mining face
  • Real-time monitoring and early warning system and method for failure depth of coal seam floor in mining face

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] like figure 1 As shown, a real-time monitoring and early warning system for the damage depth of the coal seam floor in the mining face, which includes:

[0031] Bottom plate drilling optical cable test system: select a suitable area in the roadway for the working face to implement bottom plate drilling, and the drilling design parameters meet the following two requirements: (1) The drilling should face the direction of the cutting hole and be parallel to the mining direction; (2) The drilling control depth should be greater than the theoretically calculated floor damage depth, and the theoretical depth is calculated by formula (1):

[0032] h=0.0085H+0.1665α+0.1079L-4.3579 (1),

[0033] In formula (1), H is the mining height of the coal seam, L is the oblique length of the working face, and α is the inclination angle of the coal seam.

[0034]After the drilling construction is completed, the distributed strain sensing optical cable is installed. After the distributed ...

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 discloses a real-time monitoring and prewarning system and method for the damage depth of a coal seam floor of a stope face. The system comprises a plurality of drill holes formed in the working face of each connected lane. Distributed strain sensing cables are separately buried in all the drill holes. A plurality of data acquisition substations are arranged in an air return way in a mine. The strain sensing cables in all the connected lanes are connected with the corresponding data acquisition substations separately. The data acquisition substations are connected with one another through cables and then are connected with a multi-channel substation controller through a mining network. A monitoring station is connected with the multi-channel substation controller through a strain acquisition instrument. Strain data of all the drill holes are acquired by the multi-channel substation controller, dynamic acquisition, processing and early warning explaining operation of the strain data volume of the floor rock stratum of the whole region of the working face are conducted in real time, the destructive growth depth of a floor in the working face is monitored in real time through the strain change of a rock stratum, and the water inrush prediction of the floor of the working face is improved.

Description

technical field [0001] The invention relates to the field of early warning systems for damage to coal seam floors, in particular to a real-time monitoring and early warning system and method for damage depth of coal seam bottom floors in mining working faces. Background technique [0002] With the gradual depletion of shallow coal resources, coal mining is tending to develop in depth. At this time, deep mining will face the impact of "three highs and one disturbance", which will make the mining conditions more complicated in shallow areas. When the floor of the mined coal seam is rich in a large amount of limestone confined water, "underpressure" mining will be implemented. At this time, in order to ensure safe and efficient production of the mine, it is necessary to fully grasp the failure law of the floor and accurately determine the depth of the floor mining failure zone. [0003] At present, there are empirical formulas, theoretical calculation formulas, numerical simula...

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 Patents(China)
IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 张平松孙斌杨张丹欧元超徐宝超
Owner ANHUI UNIV OF SCI & 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