露天转地下开采对矿岩稳定性影响的研究-采矿工程专业论文.docx

武汉理工大学硕士学位论文Abstract 武汉理工大学硕士学位论文 Abstract This thesis relies the project of Transition From Surface Mining Underground Mining of East-trip-mine in Daye Iron Mine．It elementarily studies the influence the stability of mine rock in the transition from surface mining to underground mining．Researchers obtained reasonable parameters and the rang size of model for calcdating simulation through researching the mine field’S engineering geology,hydro geology,mechanical parameters of rocks， ground$trOSS，setting up three-dimension calclllating model and parting them by with the aid ofsoRwares，such AutoCAD，Rhino and Ansys．This thesis， at the time．calculates the finite elemem model with the software of Algor, and studies the changing characteristic of the new hypro-accrued stress field which is caused by the mass excavation in the three sublevels from the一24m -48m range in the west while excavating at the first level．It indicates that the mechanism of rock breakage in the further relaxation of rock stress be defined as tension．Generally,the accumulation of compressive stress doesn’t cause rock breakage．The thesis points outthe range that may breakage and the corresponding prevention of accidents，which offers scientific direction for the safety-production ofmine． The convergence measuremem of tunnel Can sensitively judge the stability of surrounding rock accurately．It Can forecast the time of accelerated deformation,breakage and collapse，and,consequently,Can direct underground mining to go safely and efficiently．Setting up sct of perfect managemem system and putting forward methods for forewarning and avoiding dangers play positive role in reducing the accidents． The effective mine safety management should be actively ahead of time．It manages diversely and systematically the condition of mutual cooperation， and sufficiently Self-eontrob people’S initiative．It actually promotes the safety of whole mine system．Therefore，safety managemem of mine brings mine 武汉理工大学硕士学位论文enterprises