Annular-structure construction layout for underground nuclear power station nuclear island cavern group

Abstract

The invention discloses an annular-structure construction layout for an underground nuclear power station nuclear island cavern group. The construction layout comprises a reactor building cavern, an electric plant cavern, a safe plant cavern, a nuclear auxiliary plant cavern, a nuclear fuel plant cavern, a connection plant cavern, a first main traffic cavern, a second main traffic cavern, a third main traffic cavern, a fourth main traffic cavern and a main steam passage, wherein the reactor building cavern, the electric plant cavern, the safe plant cavern, the nuclear auxiliary plant cavern, the nuclear fuel plant cavern and the connection plant cavern form the nuclear island cavern group; the top arch springing or the top arch end wall of each cavern of the nuclear island cavern group is communicated with the earth surface by a top layer cavern support system; the side wall bottom of each cavern of the nuclear island cavern group is communicated with each main traffic cavern and the main steam passage by a bottom layer cavern support system. The annular-structure construction layout has the characteristics that the mileage is short, the safety is good, the construction is convenient, the investment is saved and the modularization level is high, and can be widely applied to the technical field of nuclear power engineering.

Description

technical field [0001] The invention relates to the technical field of nuclear power engineering, in particular to a ring-shaped construction layout of underground nuclear power plant nuclear island caverns. Background technique [0002] In my country's "Twelfth Five-Year Plan" energy plan, it is proposed to accelerate the construction of nuclear power. However, under the influence of the Fukushima nuclear accident in Japan, the global nuclear power industry, which had just emerged from the shadow of Chernobyl, fell into a trough again. In view of this, the state's examination and approval of nuclear power projects has become more stringent and prudent, and the safety requirements for nuclear power plants have also been given a higher status. In response to this situation, the new nuclear power plant layout structure in which all or part of the ground nuclear power plant is placed underground provides a new idea for the development of nuclear power. [0003] As far as the ...

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Problems solved by technology

However, compared with the underground powerhouse caverns of hydropower stations, there are fewer permanent passages available, the local hollowing rate of the mountain is high, and nuclear power projects have a high degree of modularization requirements, so the layout of construction branch tunnels is subject to more restrictions.

[0004] If the construction branch tunnels of underground nuclear power plant caverns are improperly arranged, it is easy to affect the stability and safety of the main caverns, and at the same time cause construction inconvenience, resulting in delays in the construction period and increased investment

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