Underground nuclear plant with nuclear island cavern groups distributed in gallery shape

Abstract

The invention discloses an underground nuclear plant with nuclear island cavern groups distributed in a gallery shape. The underground nuclear plant comprises nuclear islands used for generating steam through nuclear fission energy and arranged in underground cavern groups, a reactor factory building cavern used for containing reactor factory buildings is arranged in the middle, and auxiliary cavern groups used for containing auxiliary factory buildings are oppositely arranged on the two sides of the reactor factory building cavern to form a gallery structure. The factory buildings of the nuclear islands are distributed underground to form the gallery structure, so that the number of caverns of the cavern groups of the underground nuclear islands can be reduced, adverse stratum directions and ground stress large principal stress directions are conveniently avoided, and stability of surrounding rock of the caverns is facilitated.

Description

technical field [0001] The invention relates to underground nuclear power technology, in particular to an underground nuclear power plant arranged in the shape of a corridor of cavern groups on a nuclear island. Background technique [0002] The Chernobyl nuclear accident in the former Soviet Union, the Three Mile Island nuclear accident in the United States, and the Fukushima nuclear accident in Japan have shown that the existing ground nuclear power plants are not enough to effectively prevent and control nuclear leakage and ensure nuclear safety under extreme accident conditions. For this reason, some scholars and research institutions at home and abroad have proposed to build large-scale commercial nuclear power plants underground and use the natural shielding effect of rock mass to effectively control nuclear pollution in extreme accidents and improve the security level of nuclear power plants. The United States, Japan, the former Soviet Union, Europe and other countrie...

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Problems solved by technology

In this way, in the excavation of underground caverns, three layers and a total of 38 construction branch holes need to be arranged, which will cause great construction interference, which is not conducive to the stability of the surrounding rock of the caverns

Moreover, in the circular arrangement, the axes of the caverns of the fuel plant and the caverns of the connecting plant are perpendicular to each other, so it cannot be guaranteed that the axes of each cavern intersect with the direction of the rock formation and the direction of the major principal stress of the in-situ stress at a large angle, which is not conducive to the surrounding area of ​​the cavern. rock stable

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