Construction layout for caverns of underground nuclear power plant

A construction layout for caverns of an underground nuclear power plant, the construction layout comprising:

• a) two primary caverns accommodating nuclear reactor powerhouses;
• b) electric powerhouse caverns;
• c) safe powerhouse caverns;
• d) auxiliary powerhouse caverns;
• e) nuclear fuel powerhouse caverns;
• f) connecting powerhouse caverns;
• g) a first primary traffic tunnel;
• h) a third primary traffic tunnel;
• i) a second primary traffic tunnel;
• j) a fourth primary traffic tunnel;
• and
• k) a primary steam channel;
• wherein
• each electric powerhouse cavern, each safe powerhouse cavern, each nuclear auxiliary powerhouse cavern, each nuclear fuel powerhouse cavern, and each connecting powerhouse cavern form a circle surrounding each primary cavern;
• a connecting line of medial axes of the two primary caverns is perpendicular to a longitudinal direction of a mountain in which the underground nuclear power plant is constructed;
• the electric powerhouse caverns, the safe powerhouse caverns, and the nuclear fuel powerhouse caverns are arranged along the longitudinal direction of the mountain;
• the auxiliary powerhouse caverns and the connecting powerhouse caverns are arranged perpendicular to the longitudinal direction of the mountain;
• each of the safe powerhouse caverns and each of the nuclear fuel powerhouse caverns are disposed on two sides of each of the two primary caverns in the longitudinal direction of the mountain, respectively;
• each of the electric powerhouse caverns and each of the safe powerhouse caverns are located on a same side of each the two primary caverns;
• each of the auxiliary powerhouse caverns and each of the connecting powerhouse cavern are disposed on two sides of each of the two primary caverns perpendicular to the longitudinal direction of the mountain;
• the first primary traffic tunnel and the third primary traffic tunnel are disposed on two sides of two primary caverns in the longitudinal direction of the mountain;
• the second primary traffic tunnel is disposed between the two primary caverns;
• the first primary traffic tunnel communicates with the third primary traffic tunnel via the fourth primary traffic tunnel;
• one end of the second primary traffic tunnel communicates with the fourth primary traffic tunnel;
• the other ends of the first primary traffic tunnel, the second primary traffic tunnel, and the third primary traffic tunnel communicates with a ground surface;
• and
• each of the two primary caverns communicates with a corresponding connecting powerhouse cavern via the primary steam channel communicating with the ground surface;
• a skewback or an endwall of a top arch of each cavern of the nuclear island powerhouse cavern group communicates with the ground surface via a top adit system functioned in construction;
• and a bottom of a sidewall of each cavern of the nuclear island powerhouse cavern group communicates with the first primary traffic tunnel, the second primary traffic tunnel, the third primary traffic tunnel, the fourth primary traffic tunnel, and the primary steam channel via a bottom adit system functioned as a slag discharging channel.