Stress and deformation around circular tunnel are crucial for optimizing the support system and evaluating the tunnel stability. The damage zone induced by blasting or mechanical excavation can dramatically influence the support design and methods because the self-weight of broken rock mass at the roof of the tunnel can exert a high pressure on the support system. leading to the suppo... https://www.diegojavierfares.com/best-price-TaylorMade-P790-Aged-Copper-Irons-Steel-super-grab/