Theoretical Analysis of Mining Induced Overburden Subsidence Boundary with the Horizontal Coal Seam Mining by Weitao Yan, Junjie Chen, Yi Tan, Wenzhi Zhang, Lailiang Cai

“…For bedrock, the results show that the subsidence boundary of bedrock is 1/4 of the wavelength of pressure wave from the mining boundary, strata subsidence boundary expands with the increase of vertical distance between calculated strata and coal seam, and the subsidence boundary in bedrock is an upward concave curve. …”
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Study on Temporal and Spatial Characteristics of Overlying Strata in the Deep Coal Mining Process by Bang’an Zhang, Yushun Yang, Dongming Zhang

“…With the continuous advance of the working face, the roof strata of coal seam undergo the continuous dynamic subsidence process, and the roof subsidence increases continuously, showing the shape of “bowl” with sharp bottom. …”
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