A Method to Estimate Shear Quality Factor of Hard Rocks

Study on the seismic damage and dynamic support of roadway surrounding rock based on reconstructive transverse and longitudinal waves

“…McGarr (1984) put forward a scaling law that only relates to the energy level and source-target distance based on field data collected in underground mines. The scaling law has been widely used to estimate PPV for dynamic support design (Kaiser and Cai, 2012;Wang et al, 2016;Wang and Cai, 2017), the specific expression is:…”