Research on Key Technologies of Large Cavern Groups Excavation of Underground Nuclear Power Plants

Taking the circular layout underground nuclear island of the underground nuclear power plant for an example, the construction channel layout and the main construction schemes of the large cavern groups are given. At the same time, this paper presents the excavation key technologies of the nuclear reactor building and other auxiliary ones, and summarizes the main technical points of the controlled blasting technology, the supporting and enforcement technology, the rapid and informationalized construction technology. All the excavation key techniques can support the construction feasibility of the underground nuclear power plants.