Reserve calculation method

(5) Horizontal section method

The horizontal section method is essentially a type of parallel section method, except that its section is not a vertical plane but a horizontal plane.

Envisions a series of equidistant tangential horizontal plane and the coal layer, is obtained a series of horizontal section different elevations seam, then, calculates adjacent, coal reserves and the volume between the two lower horizontal section.

In the formula, V is the coal seam volume between the upper and lower adjacent horizontal sections; S1 and S2 are the areas of the coal seams on the upper and lower adjacent horizontal cut planes respectively; h is the vertical distance between the upper and lower adjacent horizontal cut planes; d is the coal seam bulk density.

This method is suitable for the calculation of reserves in inclined thick coal seams for open pit mining. The advantage is that the reserves can be calculated and calculated separately according to the height of the open-pit mining stage, which is convenient for the mine design and mining department to utilize.

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