The Forming Mechanism’s Numerical Simulation Study On The Cryptoexplosive Breccia Pipe Of Mutougou Molybdenum Depositin The Eastern Qinling

The cryptoexplosive breccia of molybdenum deposit is one important deposit type ofthe porphyry molybdenum,In the eastern part of China,especially in the study area and itsadjacent region, a plurality of large cryptoexplosive breccia molybdenum deposit output.Therefore,in the study area,the study of this kind of cryptoexplosive breccia molybdenumdeposit,especially the study of its main ore-controlling structure of cryptoexplosive brecciapipe structure, has the typical significance in cryptoexplosion breccia molybdenum oredeposit research and prospecting.The orebody of cryptoexplosive breccia deposit always distributed in the breccia pipewhich developed in the concealed explosive effect, thus the study of the cryptoexplosionbreccia deposit, first is the study of main ore controlling tectonics—cryptoexplosive brecciapipe’s structural formation mechanism. The study of deposit is located in the XiongErShanarea in the Eastern qinling southern margin of the North China plate, which is located in thefamous eastern qinling mountains molybdenum ore belt. And its type is cryptoexplosivebreccia deposit. For the multicenter, multiperiods, multirank’s complexity and particularityof the cryptoexplosive and mineralization, give rise to the complexity and particularity ofbrecciabody’s distribution and mineralization regularity, and then make the cryptoexplosionand mineralization regularity’s understanding becomes more difficult.In recent years the3D dynamic finite element method has obtained the rapiddevelopment, has become a method commonly used in geology numerical simulation,especially for solving all kinds of complex mechanical properties of high speed impact,explosion and shock, and other nonlinear dynamics problems. For the superiority of thenumerical investigation, for nearly20years, those experts and scholars who Has MadeRemarkable Achievement in the traditional structural geology, metallogenic tectonicresearch, geotectonics, has been committed to the numerical simulation research.By using3d dynamic finite element method, based on the establishment of3D geological models,through the establishment of geology, mechanics and computational model, to determinethe mechanical properties of structural form by the quantitative analysis method, can bemore intuitive to analyse and discuss the tectonic formation mechanism.This paper, Through summarizing mutougou cryptoexplosive breccia pipe tectoniccharacteristics, analyse the breccia spatial distribution regularity and tectonic formingconditions, To make the3-d numerical simulation of mutougou breccia pipe’s formingprocess, vividly show the mutougou breccia pipe’s forming process in terms of thecryptoexplosive breccia pipe’s generated physical nature, dynamics and the geological structure.Combined3d finite element numerical simulation method and structural geology,and combined the results of numerical simulation with regional tectonic events and otherbreccia body structure characteristics of regional to do integrated study, summarize thestructure characteristics of the breccia pipe, then discuss mutougou breccia pipe’s formationmechanism. As well as lucid the relationship of breccia pipe structure evolution andmineralization, provide scientific theoretical basis for the practical prospecting work.