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Analysis of Subsidence Trough in Depth

A linear interpolation between the maximal value of the settlement Smax at a terrain surface and the displacement of roof excavation ua is used to calculate the maximum settlement S at a depth h below the terrain surface in a homogeneous body.

Analysis of subsidence trough at a depth

The width of subsidence trough at an overburden l is provided by:

where:

L

-

length of subsidence trough at terrain surface

r

-

excavation radius

Z

-

depth of center point

z

-

analysis depth

The values l and S are then used to determine the shape of subsidence trough in overburden above an excavation.