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Method and apparatus for measuring surface density of explosive and inert dust in stratified layers
Method and apparatus for measuring surface density of explosive and inert dust in stratified layers
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机译:测量分层中爆炸和惰性粉尘表面密度的方法和设备
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摘要
A method for determining the surface density of coal dust on top of rock dust or rock dust on top of coal dust is disclosed which comprises directing a light source at either a coal or rock dust layer overlaying a substratum of the other, detecting the amount of light reflected from the deposit, generating a signal from the reflected light which is converted into a normalized output (V), and calculating the surface density from the normalized output. The surface density S.sub.c of coal dust on top of rock dust is calculated according to the equation: ##EQU1## wherein a.sub. c is a constant for the coal dust particles, and the surface density S. sub.r of rock dust on top of coal dust is determined by the equation: ##EQU2## wherein a.sub.r is a constant based on the properties of the rock dust particles. An apparatus is also disclosed for carrying out the method of the present invention.
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