Research On Coal Mine Warning Rockburst Of Long Nanshan

With the increase of mining depth, the rock burst has become a serious constraint ofthe main mine production safety, to a certain extent on the lives and safety of minersformed a serious threat to this paper, for23coal mining area of Long Nanshan mineimpact ground pressure warning studies, summarized by learning first domestic researchrockburst advanced theory, study the underlying causes of rock burst occurred, and then goto study the impact of external factors on the role of the rock burst, the comprehensiveimpact of various shocks to Pressure causes through the rational use of the relevanttechnical means22135Face Long coal mining area will be the impact of the danger zonewarning.Through theoretical analysis and field trials combining factors to consider multipleperspectives, through the use of a variety of advanced forecasting methods Nanshan minestudy, the first comprehensive index applying research and analysis for the entire minegeological discoveries, all mine most regions with moderate or strong shock hazard anddanger zone draw, while22mining area is the depth of mining region with strong shockhazard, and then analyze the impact of mining conditions ROCKBRUST found threeshocks hazardous work22135and other surfaces such as the face, and then simulate22135Face analysis in the mining process, the results of the original rock with high stress areasand in the process of mining face re-distribution of stress, and the division of the recoveryprocess The five stress concentration area, then use the microseismic monitoring datafound microseismic energy above the danger zone generally exceeded, and by the impactof the past when the incident energy is about105J,105J and therefore to a near value, andthen through the solenoid Radiation method for hazardous areas for further research, andresearch found on the lower roadway2213520-120m, to help monitor the range of20-500m each10classes of electromagnetic radiation intensity of monitoring data,statistics on the lower roadway, the average intensity of electromagnetic radiation valuesLane24.8mv, under Lane25.6mv, the critical value of24.8×1.5=38mv,22135 under the central region of the electromagnetic radiation intensity Lane has been in arelatively large value of the state, during the22135mining face can refer to this threshold,then the use of the drill cut approach to study the impact of the danger zone, the dataindicate that the majority of the regional average amount of drill cuttings and drillingcuttings maximum volume exceeds the critical value, Lane explained under great stress, todetermine the impact of the danger zone and determine the critical value.