IOP Conference Series: Earth and Environmental Science | 2021
Research on stability monitoring and early warning methods for cantilevered rocks
Abstract
It is difficult to monitor the change of rock stability effectively and warn of the damage of rocks by using external deformation indicators. The article analyzed the change of the cantilevered rock’s natural frequency during its stability decline and proved that the rock’s natural frequency can reflect the rock’s stability. The article analyzed the motion characteristics of cantilevered rocks and gave the calculation method of the natural frequency of cantilevered rocks. Using the formula, the natural frequency value within each stage of the rock can be calculated, and the critical natural frequency value before rock damage can be determined. Based on the theoretical equations’ calculation results, the monitoring of dynamic changes in cantilevered rocks’ stability and early warning of rock collapse can be accomplished using vibration sensors.