Моделирование полей напряжений и оценка удароопасности конструктивных элементов системы разработки Южно-Хинганского месторождения марганцевых руд

Abstract

Large-scale and intensive anthropogenic activity, which includes excavation and transportation of large volumes of rocks during the development of solid minerals deposits, has a significant impact on the natural stress-strain state of the rock massif and often leads to activation of geodynamic processes. The forecast of geodynamic activation, which is manifested through rock-tectonic bursts, man-made and induced seismicity and other hazard geodynamic phenomena, is an urgent and a very difficult problem. Geomechanical studies to assess the potential impact hazard of the rock mass at the Yuzhno-Khingansk manganese ore deposit are presented in the article. The mining, geological and technical conditions of the deposit development were studied, the parameters of the physical and mechanical properties of the host rocks and ores were determined. The degree of impact hazard of the rock samples under triaxial compression was determined as well as susceptibility of rocks to dynamic fractures was assessed according to the Stavrogin's criterion. Numerical modeling methods were used to assess the impact hazard of structural elements of the field mining system.