| 摘要 |
A method for classifying types of loess gully runoff water disasters caused by mining, the method comprising: acquiring a thickness of a coal seam in a cross-gully mining area, a hardness degree of a roof strata, a thickness of a water-resisting soil layer and a distance between a bottom of the gully and a mining coal seam; and according to principles regarding the thickness of a sand-prevention safe protection layer of a coal-rock pillar and the thickness of a water-prevention safe protection layer of the coal-rock pillar in < rules for pressed coal mining and rules for protecting and setting of buildings, water, railway and main mine laneway coal pillars>, classifying the types of loess gully runoff water disasters caused by mining into a water flooding and sand collapse area, a water flooding area, a leakage area and a water protecting area. The present invention specifically classifies the types of Northwest China loess gully runoffs water disasters caused by mining, and provides basis for the selections of cross-gully mining treatment measures, thus avoiding water flooding and sand collapse disasters caused by careless mining, and protecting an ecological environment. |
