To maximize the usage of underground space, there will be more and more engineering projects that will be built above the running tunnels. To ensure the safety operation of the running tunnels, there is a need to predict and control the tunnel deformations. This paper combines the experiences from the construction of underpasses above running tunnels in the soft soil region of Shanghai and discusses the rules of rebound effects of running tunnels due to excavation by FEM numerical simulation. The writer attempts to use the soil unloading Semi-experiential modulus derived from the Shanghai soft soil region experiments, taking into consideration the effects of the load-space relation and the effects of the property of the soil within the rebound zone in reaction to the unload distribution to propose a calculation formula for the rebound effects of running tunnels. The results calculated from the formula are very close to those measured, hence proving that the formula is a simple and practical way to predict tunnel deformations within the same regional projects. (A) This paper was presented at Safety in the underground space - Proceedings of the ITA-AITES 2006 World Tunnel Congress and the 32nd ITA General Assembly, Seoul, Korea, 22-27 April 2006. For the covering abstract see ITRD E129148. "Reprinted with permission from Elsevier".