Application of the Strain Energy to Estimate the Rock Load in Non-Squeezing Ground Condition

摘要: Estimation of rock load is very important issue because the selection support system highly related to this parameter. Several methods are used estimate parameter such as experimental, empirical and numerical methods. In study, a new method proposed based on ration residual strain energy post failure stored pre failure. Also statistical analysis performed through collected actual data from fi ve tunnels in non squeezing condition. The result showed that there direct relationship between both parameters good correlation achieved by using power equation