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

In this paper, the relative complexity of the tectonics in the Sangshuping coal mine was studied. On the basis of the assumption of equal blocks, using entropy function analysis and stepwise regression analysis, an empirical formula for quantitatively evaluating structural relative complexity was established from the structural characteristics in the exposed area, and then the formula was applied to the prediction of relative tectonic complexity in the unexposed area. The results are as follows. First, the main factors affecting the structural relative complexity of the No. 3 coal seam were the number of contour lines, the thickness of the overlying sandstone, the abnormality index of the coal seam thickness, and the lithology of the coal seam roof. Second, the complexity level in the exposed area of the No. 3 coal seam was mainly medium, and the level in the unexposed area was simple. The tectonics in the southern part of the coal mine were more complex than those in the north, and those in the east were more complex than those in the west. Finally, the relative complexity level of the No. 11 coal seam was simple; the tectonics of the northern part were relatively simple, and those of the central and southern parts were moderate.