METHOD FOR CATEGORIZING DEGREE OF DISASTER CAUSED BY DIVING LEAKAGE IN SHALLOW BURIED COAL SEAM MINING

摘要

Disclosed is a method for categorizing the degree of a disaster caused by a diving leakage in shallow buried coal seam mining, belonging to the coal mining protection field for solving the problem that it is impossible to accurately determine the degree of a disaster caused by the leakage of an overlying diving layer in a coal mining area. The method comprises the following steps: S1. arranging a monitoring point in a coal mine working face and burying a telemetry water level gauge for water level monitoring; S2. monitoring the ground elevation, calculating an amount of ground settlement and collecting drilling footage data; S3. plotting a curve of the relationship between a distance of the drilling footage from the monitoring point, the amount of ground settlement and the change in water levels from the monitored data; S4. comparing the plotted curve with a diving no-leakage diagram, a micro-leakage diagram and a mass-leakage diagram, and categorizing the degree of leakage; and S5. further categorizing a research area into an environmental disaster area or a friendly area. The categorizing method is simple and practical, and from the perspective of ecological protection, targeted determination of a shallow water resource leakage and an environmental disaster in northwest coal fields is performed, a basis is provided for the selection of mining methods for digging, and same is of great significance to ecological environmental protection during mining in northwest coal fields.