The minimum recoverable thickness boundary line of the coal seam of the ore body and its determination
Coal reserves calculation method
(2) The lowest recoverable thickness boundary line of coal seam and its determination
The coal seam is thick and thin, and the coal seam point to be mined must have a thickness index, and the exploitable boundary points of the coal seam thickness are connected to become the recoverable boundary line of a certain coal seam. The coal seams in the line can be taken, and the coal seams outside the line are not available.
There are two kinds of coal seeing projects that can be seen outside the coal seam. One is coal-free, and the other is coal, but it is not. The methods for determining the lowest available coal point are summarized as follows.
1. Under conditions, such as direct observation in the roadway
2. Interpolation
"The lowest recoverable thickness boundary line of coal seam and its interpolation method"
3. Limited inference method
"The minimum recoverable thickness boundary line of coal seam and its limited inference method"
4. Infinite inference
"The lowest recoverable thickness boundary line of coal seam and its infinite inference method"
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