Method for Classifying Types of Loess Gully Runoff Water Disaster Caused by Mining

摘要

#$%^&*AU2015101907A420190516.pdf#####A method for classifying types of less 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 coalrock 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 less 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 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.