Acoustic detection method and system for high-temperature fire area position of mine goaf under coal mine shaft
A technology of sound wave detection and goaf, applied in radio wave measurement system, direction finder using ultrasonic/sonic wave/infrasonic wave, system for determining direction or offset, etc. Problems such as the location of high-temperature fire areas, etc., to achieve the effect of low cost and high accuracy
Active Publication Date: 2020-02-04
SHANDONG UNIV OF SCI & TECH
View PDF6 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, there is no detection method that uses sound waves to determine the location of high-temperature fire areas in goafs in underground coal mines.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Combine Figure 1 to Figure 3 As shown, the specific implementation of the method and system for detecting the position of the high temperature fire zone in the goaf of the coal mine provided by the present invention is as follows.
[0032] An acoustic wave detection method for the location of a high-temperature fire zone in a goaf underground in a coal mine. The steps include:
[0033] step one.
[0034] Determine the best frequency for receiving the acoustic signal, and arrange the acoustic sensor measuring points.
[0035] Among them, it is necessary to determine the hydrogeological conditions of the coal seam, the spontaneous combustion characteristics of the coal, and the sound wave characteristics of the coal rock heating before the placement of the acoustic wave sensor. Determine the best frequency, test distance and measuring point arrangement for receiving acoustic signals with the sound wave characteristics of coal and rock heating.
[0036] Specifically, when determi...
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
Login to View More Abstract
The invention provides an acoustic detection method and an acoustic detection system for a high-temperature fire area position of a mine goaf under a coal mine shaft, and relates to the technical field of mine safety, in particular to a method for judging a high-temperature abnormal area position by utilizing an acoustic signal produced by coal-rock mass warming and coal spontaneous combustion ofthe mine goaf. The acoustic detection method comprises the steps of determining the optimum frequency of the received acoustic wave signal, arranging acoustic sensor measuring points, computing an acoustic wave signal strength average value of each measuring point in real time so as to judge a spontaneous combustion danger level, judging a change tendency of the spontaneous combustion danger levelthrough analyzing a change slope of acoustic wave strength, carrying out inversion of a spontaneous combustion coal seam high-temperature fire area position through a Kriging interpolation method, and realizing the positioning of the high-temperature fire area position. The method is implemented through the acoustic detection system. The acoustic detection system comprises an acoustic sensor module, a digital monitoring and transmitting module, an acoustic data analysis module, a storage module and a display module. The high-temperature abnormal area of the mine goaf is determined rapidly atlow cost and with high precision, and the method and the system are applied to analyzing a generation and development process of spontaneous combustion of a coal seam.
Description
Technical field [0001] The invention relates to the technical field of mine safety, in particular to an acoustic wave detection method for the position of a high-temperature fire zone in a goaf underground in a coal mine, and an acoustic wave detection system for realizing the method. Background technique [0002] The spontaneous combustion of coal is due to the phenomenon of spontaneous combustion of coal in the process of mining, storage and transportation. The hazards of spontaneous combustion of coal are very serious. Coal producing countries in the world are threatened by spontaneous combustion of coal to varying degrees. According to statistics, more than 56% of coal seams have spontaneous combustion characteristics. Spontaneous combustion of coal poses a major threat to underground production safety. In addition, spontaneous combustion of coal seams is difficult to extinguish. The total amount of coal lost due to spontaneous combustion of coal seams exceeds 10 million tons ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18E21F17/00E21F5/00G01S3/802G01S5/18
CPCE21F5/00E21F17/00E21F17/18G01S3/802G01S5/18
Inventor 孔彪陆伟程卫民亓冠圣贺正龙李金亮胡相明曹英嘉子李家亮
Owner SHANDONG UNIV OF SCI & TECH