Abstract:

Based on the data collection of mechanical and physical properties of rock types in exploration works and lava maps established from 2002 to 2018, we processed and analyzed using geostastical method to develop the experimental equations which forecast the mechanical and physical properties of rock types at Coc Sau and Deo Nai coal mines. This result generates a function of mechanical and physical properties of rock types and mining height which supports the open pit coal mines in Quang Ninh to produce efficient excavation, transportation and blasting plans