| Popis: |
With the depletion of shallow coal resources, the existing production mines in Fengfeng Mining Area have entered the era of deep coal mining. Deep coal mining will face the problems of high ground stress, high temperature, high karst water pressure, complex water conduction structure and strong mining disturbance. All kinds of new problems and new characteristics of water inrush are gradually emerging, showing different hydrogeological laws from shallow mining. Based on the analysis of 72 water inrush cases in Fengfeng Mining Area over the years, the water inrush types are divided by single factor and the water inrush modes are summarized by multiple factors. According to the recharge source of water inrush source and the spatial relationship between coal seam exploitation and water inrush aquifer and channel, the water inrush types are divided into 7 categories, 28 subclasses and 50 types. At the same time, the paper systematically summarizes the various factors of disaster causes, analyzes the manifestation of water inrush from multiple angles, sums up 9 kinds of water inrush modes based on different key disaster causing factors, and illustrates the main characteristics and mechanism of water inrush modes combined with typical water inrush cases. |
