Table 3 Quantitative value for the lithology of the coal seam roof.

From: Quantitative evaluation and prediction of the relative complexity of Sangshuping coal mine tectonics in the Hancheng mining area

First-level evaluation objectives

Relative complexity of geological tectonics

Second-level evaluation indices

Coal seam

Coal seam floor

Coal seam roof

Tectonics

Third-level evaluation indices

Coal seam thickness

Coal seam floor elevation

Lithology of the coal seam roof

Number of large-scale faults

Anticline

Anomaly index of the coal seam thickness

Anomaly index of the floor elevation

Thickness of sandstone in the range of 50 m of the roof

Number of medium-scale faults

Syncline

 

Number of contour lines of the coal seam floor

 

Number of small-scale faults

Monocline

   

Total number of faults

 

Data sources

Undisclosed area, exposed area

Exposed area

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