Measured Based On The Cms The Goaf Group Numerical Simulation Of Stability

The excavation of the rock will cause the release of the crustal stress, may cause the country rock to lose steadily and destroying. Because the rock has non-linear characteristics, different from rock mechanics parameter in different loading routes, be shown as different mechanics will be responded. Numerical simulation analysis is more and more important in the engineering geology research field. For stability analysis, we must clearly understand the object of analysis and understanding of the geological conditions and accurate excavation of the rock. Establishment of a 'credible' geological model for the use of the numerical simulation is the premise of stability analysis. It is particularly important for the rock project in multi-media complex conditions.Accurate building of mechanical model is the foundation of numerical simulation study on rock and soil engineering stability. The actual 3D shape and exact spatial position of abandoned stope are the important factors which affect the reliability of the numerical simulation of abandoned stope stability. However, in the past, the shape of the cavity was usually taken as to be a regular one which is confirmed by the stope mining design, or even used a simple manual model in the process of the numerical simulation, which depressed the reliability of the numerical simulation results seriously. In this paper, the 3D shape and the spatial location are obtained accurately by using Cavity Monitoring System, and the 3D shape model of the cavity is established precisely by using the SURPAC software. A kind of modeling method for numerical simulation on abandoned stope stability by coupling SURPAC and FLAC^3D is put forward. So, a new coupling technique of numerical simulation on abandoned stope stability based on cavity monitoring is formed, which improve the availability and reliability of the numerical simulation results effectively. The new technique is used successfully in the numerical simulation study on the stability of the abandoned stope group of the Tongken Mine southwestern mining district. It is proved that the new technique is feasible and reliable, and provides a new way for abandoned stope group stability numerical simulation study.