RADIOACTIVE WASTE WATER UNDERGROUND MIGRATION PROTECTION SYSTEM OF UNDERGROUND NUCLEAR POWER PLANT

A radioactive waste water underground migration protection system of an underground nuclear power plant, comprising reactor cavern protection layers (S) and a nuclear island peripheral overall protective water impermeable layer (Z) capable of blocking the underground water of a natural rock mass; the reactor cavern protection layers (S) comprise a liner layer (S1) surrounding a reactor cavern and preventing water leakage, a seepage water concentration and drainage layer (S3) having water concentration and repelling function, and a rock mass fissure filling layer (S2); the peripheral overall protective water impermeable layer (Z) is provided on the periphery of an underground cavern group jointly consisting of the reactor cavern and an auxiliary cavern. L'invention concerne un système de protection contre la migration souterraine d'eaux usées radioactives d'une centrale nucléaire souterraine, comprenant des couches de protection de caverne de réacteur (S) et une couche imperméable à l'eau de protection globale