DOI: 10.11799/ce202311047
Residual top coal thickness detection technology and its application in shearer drum height control
ZHANG Ronggang
WANG Shuaifeng
Abstract：The remaining top coal thickness detection technology is the core to realize the shearer drum automatic elevation.Only by accurately and quickly detecting the top coal thickness,can the shearer drum fully automatic control be realized.Based on the relationship between the attenuation degree of natural γ rays passing through the coal seam and the thickness of the top coal,a mathematical model of the attenuation of natural γ rays passing through the top coal without support beam is established.On this basis,a sensor is designed that can quantify nature γ radiation intensity,and by analyzing the changes in radiation intensity under different top coal thicknesses,a residual top coal thickness detection device is designed to guide the height adjustment control of the shearer drum.Through on-site tests,it is found that the measurement accuracy of the detection device is 7.5%.Under the control of the top coal thickness parameters,the automatic control of drum height adjustment is completed,verifying the correctness of the mathematical model and the rationality of the designed device scheme.
Keywords：natural γ raysradiation intensitytop coal thickness detectiondrum height control
Publication Date：2023-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 85-89 )