Study On Failure Regularitys Of Seam Floor In Xingtai And Handan Areas

Xingtai and Handan areas are important orefields,it's affected by Mine water disaster.Mine water inrush especially at the floor took place frequently in history,caused the severe economic loss and adverse effects. Most coal resource in most shallow mining in Xingtai and Handan areas will be exhausted, and must exploited the deep area,the situations of mining water prevention are very grim.All kinds of water-inrush accidents especially at the floor show that the water-inrush channel mainly is concealed water-conductive fault.,the key is that Separating Water ability of coal floor aquiclude reduces by coal floor breakage depth.Therefore, it has the significant practical significance to discuss coal floor destruction features and laws to prevent floor water-irruption.Based on geology and hydrogeology conditions of Xingtai and Handan areas, the combining technical route of theoretical analysis and field test and numerical simulation are used to discuss coal floor destruction features and regularity of Xingtai and Handan areas.The coal floor breakage depth of different mining condition in Xingtai and Handan areas are determined by field test, coal floor destruction features and regularity are analyzed by numerical simulation method, the influences and restricts coal floor destroying degree major factors are also analyzed. The research result is certain representativeness,it contributed to deep understanding water inrush mechanism of mine,it have very important instruction meaning for establishing a reasonable preventing water solution and realizing the mine safety production in coal mine.