The Mine Of Taoyi Those Ground Stress Test And Its Research Of Changes In The Distribution

In coal enterprises will be confronted with all kinds of geological conditions,coal production of the complicated geological conditions and structure and easy tocause the accident, such as gas explosion and impact ground pressure roadwaydrivage and seriously affected the coal mine safety production. Taking south returnair lane now seven mining area coal mine as the background, at the scene of theanalysis of in-situ stress testing, and pressure, the detection based on data fromdrilling by FLAC3D numerical simulation in the process of drivage failure zone ofsurrounding rock under different angles, the horizontal displacement of surroundingrock under different angles, under the condition of different lateral pressure roundhole plastic zone distribution of cases, the impact on the stability of surrounding rockof roadway, the analysis of the deformation and failure law of surrounding rock ofroadway, the stress field change. Through the theoretical analysis of in-situ stressdistribution regularity of change, is now seven mining area coal mine deep resourcebased data mining provides the stress distribution, provide theory basis for roadwaysupport design and stope. On the original rock stress and the secondary stress changelaw to carry on the systematic analysis of the distribution of the discussion Throughthe laboratory experiment, from the perspective of macro and micro decides the sizeand direction of in-situ stress.This paper studies have shown that by studying the in-situ stress distributionregularity of disturbance, drilling aperture size on excavating section and the effectsof the pressure relief can provide basic for seven south return air roadway supportmining stress parameters and safety efficient tunneling to provide technical support.Through the study of the subject, the hope can for the domestic similar engineeringdemonstration guidance effect of excavating in coal roadway, and a certain referencesignificance.