Abstract:Because of the complicated geological conditions,fragmentation of ore and rock mass,developed underground water,Luzhong iron mine is one of difficult excavation mine in China. According to the conditions of the very broken orebody in Luzhong mines,so they are difficult to be mined safely;the dynamic monitoring of the law of stope ground-pressure was carried out. The change of stope ground-pressure was measured by using the borehole strain sensor;and the electronic digitally-displayed convergence indicator was used to measure deformations of surrounding rock so as to obtain a general law of the ground pressure. This technique provides a scientific basis for selecting rational mining method and ground-pressure control measures.