Prediction On Rock Burst And Prevention Research In The No.3 District Of DongTan Coalmine

With the depth of coal mining increase, the occurrence of percussive ground pressure is more and more frequent. When the rock burst happen, it will not only influence the tasks of coal mine production, but also damage the mining equipments and injure the workers. And the third mining area in the process of the exploitation, the geological structure and coal seam occurrence condition is very complex. So it is necessary for us to be more thorough and systematic research on the protective mechanism of the rock burst.This paper takes the third mining area in Dongtan coal mine as the research object, based on geological conditions, coal seam condition and stress field analysis to preliminary design. By analyzing some method such as the laboratory test and field test and data comparison and other method, the comprehensive judgement stress distribution effect of the upper coal mining of the lower in the coal. According to the three mining geological and mining conditions, and the stress distribution after the mining, determined the impact of the coal bed mining risk of the third mining area, and forecast dangerous area of coal seam mining process, determine the rational mining sequence of the third mining working face, and make the monitoring and prevention to the test three mining working face.The research result in this paper will play a guiding role in the prediction, monitor and integrated prevention and control work of rock burst in Dongtan coal mine of the third mining area, which gives a technical support to safe mining. It also provides a certain foundation for preventing and controlling the rock burst.