| With the rapid development of national economy and increasing demand for mineral resources,deep mining has continued.However,the Ministry of Environment and deep stress,pressure to show clear,top-pillar rock excavation caused by broken pillar instability,power,mining rock burst hazard a serious threat to the safety of mine personnel and property.Application of mine seismic monitoring technology provides the basis for the study of deep rock mass instability and dynamic disaster.But up to now,development is not very mature.Therefore,it is scientific and practical to carry out monitoring studies of ore body.This paper relies on the project of deep mining and ground pressure control project in Jinqingding Gold mine,disrupted in deep rock mass according to the research on seismic activity regularity exploring rock rupture mining field stability changes in the rules and mining disturbance.First of all,Q classification method and RMR method were used on global stability evaluation of ore body,and the elastic energy,brittleness coefficient and elastic strain index method of deep rock burst tendency and level of analysis.Followed by the study of the seismic events,the temporal and spatial distribution were analyzes,and the mining microseism was analyzed by statistical theory before and after active and rock rupture when accumulated volume,energy index,Schmidt coefficients,radiation can than other seismic parameters changes proposed seismicity information evolution.At last,FLAC3D software was used to simulate the displacement and stress of rock mass during mining,in order to analyzing the stability of stope.In this paper,theoretical analysis,in-situ monitoring and numerical simulation method were used.The results showed that V ore body overall damage to a lesser extent,the rock rupture mainly due to rock due to excavation;Large cracked rock precursor information cumulative volume roses sharply,as the energy index,as well as a sharp decline in the number of radiation than Schmidt Seismic monitoring system and the conclusions of this study to establish a certain theoretical significance and practical value to guide mine safety measures. |
