Research on 3D perspective stope technology of fully mechanized mining face construction in Shendong Mining Area

In order to realize the mine pressure and production management during the working face and guarantee the construction of smart mine, it is necessary to construct a 3D perspective stope. Firstly, based on the practical mine pressure control theory, a mechanical model of stope spatial structure is established, and an algorithm system is trained for the derivation of overlying rock motion parameters, calculation of abutment pressure distribution law, real-time monitoring data analysis of mine pressure and 3D static and dynamic stress simulation of stope. Secondly, the 3D transparent geological model is constructed by using 2D and 3D integrated modeling, the hydraulic support and other equipment are finely modeled by using 3D modeling tools, and the motion state of overlaying strata on the stope is professionally modeled to reflect the comprehensiveness of the basic elements of the stope through 3D perspective. The real-time monitoring data of stope are analyzed by using three methods: the 3D surface integral method, the multi-objective and multi-factor classification method, the time series data and other data analysis. Finally, based on the project background of 42204 working face of Buertai Coal Mine, a 3D perspective stope basic model is built. The established 3D model can reflect the distribution law of stress field change according to geological information, borehole data, ore pressure appearance and other actual conditions, realization of the demonstration of the mining stress in the mining space with the advancement of the working face, and provide technical support for the mining pressure and production management during the mining face.