Advances in Civil Engineering / 2018 / Article / Tab 2

Research Article

Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control

Table 2

Stratigraphic sequence of study panels.

StrataThickness (m)

 Gray clay shale1.8
 Pittsburgh first rider coal seam0.39
 Gray clay shale0.3
Coal seam1.88
 Gray clay shale1.37
Daliuta LW22304
 Sandy mudstone2.8
 Coarse sandstone29.6
 Fine sandstone3.7
 Coarse sandstone12.7
 Coal (mined seam)7
 Middle-fine sandstone18
 Carbon mudstone0.2
Coal seam4.4
 Fine sandstone4.57
Yongcheng LW203
 Sandy loam3.86
 Sandy mudstone4.93
 Aluminum mudstone3.89
 Sandy mudstone3.21
Coal seam2.8
 Sandy mudstone4.92

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