Three dimensional mechanical numerical analyzing on mine pass construction of metal mine

Mine use sublevel caving method, in the production process, the mine pass is an essential ore transport channel, in the production plays an very important role. Therefore the stability of the chute is an important technical support of the mining production and the safety in underground metal mines. Taking a sublevel caving method mining as the research background, Using the MIDAS/GTS finite element software to do numerical analysis of the chute excavation and support of three-dimensional mechanical problems. Results show that: After chute excavation, the wall within 0.3m of a significant displacement, shift several millimeters; different levels of access road excavation, the wall is affected little, But the access road junction with the chute significant displacement, especially with the chute increase the depth of wall the displacement increases; Slip road connecting the wells and different levels of support according to the design parameters, the effect of displacement control of the range of wall displacement and the interchange of access road and chute is significant.