Theoretical Analysis of Mining Induced Overburden Subsidence Boundary with the Horizontal Coal Seam Mining

<div>Variation curve of pressure wave velocity. (a) P-wave velocity along the direction of compressive stress. (b) P-wave velocity perpendicular to the direction of compressive stress.</div>

Advances in Civil Engineering

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Figure 3

Figure 3: Theoretical Analysis of Mining Induced Overburden Subsidence Boundary with the Horizontal Coal Seam Mining 