Method for hoisting and transporting assemblies in underground nuclear power plant

1. A method for hoisting and transporting assemblies in an underground nuclear power plant, the method comprising:

1) pouring concrete onto a reactor cavern to form a rock anchor beam disposed on an upper part of the reactor cavern; excavating a hoist shaft on a top portion of a reactor cavern in a direction perpendicular to the ground; hoisting a circular bridge crane to the reactor cavern through the hoist shaft; and mounting the circular bridge crane on the rock anchor beam;

2) installing a containment cylinder in the reactor cavern and installing a track beam of a polar crane on an upper part of the containment cylinder using the circular bridge crane; hoisting one end of a polar crane girder and sending the polar crane girder through the hoist shaft to the reactor cavern; hoisting the other end of the polar crane girder to be horizontal by the circular bridge crane; and mounting the polar crane girder on the track beam;

3) hoisting processed pieces of a steel lining to the reactor cavern through the hoist shaft; by using the track beam and the polar crane girder as supporting points, soldering and assembling the pieces of the steel lining on a top portion of the containment cylinder to form a containment dome;

4) transporting permanent equipment for a nuclear reactor into the containment cylinder through a transport corridor which is connected to the reactor cavern; and turning over the permanent equipment and hoisting the permanent equipment to working areas using the polar crane girder.

2. The method of claim 1 , wherein when performing 1), excavating combined caverns; mounting bridge cranes on upper parts of the combined caverns, respectively; transporting nuclear power auxiliary devices through a primary traffic tunnel to installation platforms which are respectively disposed at one side or one end of the combined caverns; and hoisting the nuclear power auxiliary devices to working positions by the bridge cranes.

3. The method of claim 1 , wherein when performing 2), excavating combined caverns; mounting bridge cranes on upper parts of the combined caverns, respectively; transporting nuclear power auxiliary devices through a primary traffic tunnel to installation platforms which are respectively disposed at one side or one end of the combined caverns; and hoisting the nuclear power auxiliary devices to working positions by the bridge cranes.

4. The method of claim 1 , wherein when performing 3), excavating combined caverns; mounting bridge cranes on upper parts of the combined caverns, respectively; transporting nuclear power auxiliary devices through a primary traffic tunnel to installation platforms which are respectively disposed at one side or one end of the combined caverns; and hoisting the nuclear power auxiliary devices to working positions by the bridge cranes.

5. The method of claim 1 , wherein when performing 4), excavating combined caverns; mounting bridge cranes on upper parts of the combined caverns, respectively; transporting nuclear power auxiliary devices through a primary traffic tunnel to installation platforms which are respectively disposed at one side or one end of the combined caverns; and hoisting the nuclear power auxiliary devices to working positions by the bridge cranes.

6. The method of claim 1 , wherein when performing 1), 2), 3), and 4), excavating combined caverns; mounting bridge cranes on upper parts of the combined caverns, respectively; transporting nuclear power auxiliary devices through a primary traffic tunnel to installation platforms which are respectively disposed at one side or one end of the combined caverns; and hoisting the nuclear power auxiliary devices to working positions by the bridge cranes.

7. The method of claim 1 , further comprising: 5) excavating combined caverns, mounting bridge cranes on upper parts of the combined caverns, respectively; transporting nuclear power auxiliary devices through a primary traffic tunnel to installation platforms which are respectively disposed at one side or one end of the combined caverns; and hoisting the nuclear power auxiliary devices to working positions by the bridge cranes.

8. The method of claim 2 , wherein the combined caverns comprise an auxiliary powerhouse cavern, two safe powerhouse caverns comprising a first powerhouse cavern and a second powerhouse cavern, and a nuclear fuel powerhouse cavern; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern are disposed lengthwise in a line; the auxiliary powerhouse cavern, the first safe powerhouse cavern, the nuclear fuel powerhouse cavern and the first second safe powerhouse cavern are connected in sequence; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern each are connected to the primary traffic tunnel.

9. The method of claim 3 , wherein the combined caverns comprise an auxiliary powerhouse cavern, two safe powerhouse caverns comprising a first powerhouse cavern and a second powerhouse cavern, and a nuclear fuel powerhouse cavern; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern are disposed lengthwise in a line; the auxiliary powerhouse cavern, the first safe powerhouse cavern, the nuclear fuel powerhouse cavern and the second safe powerhouse cavern are connected in sequence; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern each are connected to the primary traffic tunnel.

10. The method of claim 4 , wherein the combined caverns comprise an auxiliary powerhouse cavern, two safe powerhouse caverns comprising a first powerhouse cavern and a second powerhouse cavern, and a nuclear fuel powerhouse cavern; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern are disposed lengthwise in a line; the auxiliary powerhouse cavern, the first safe powerhouse cavern, the nuclear fuel powerhouse cavern and the second safe powerhouse cavern are connected in sequence; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern each are connected to the primary traffic tunnel.

11. The method of claim 5 , wherein the combined caverns comprise an auxiliary powerhouse cavern, two safe powerhouse caverns comprising a first powerhouse cavern and a second powerhouse cavern, and a nuclear fuel powerhouse cavern; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern are disposed lengthwise in a line; the auxiliary powerhouse cavern, the first safe powerhouse cavern, the nuclear fuel powerhouse cavern and the second safe powerhouse cavern are connected in sequence; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern each are connected to the primary traffic tunnel.

12. The method of claim 6 , wherein the combined caverns comprise an auxiliary powerhouse cavern, two safe powerhouse caverns comprising a first powerhouse cavern and a second powerhouse cavern, and a nuclear fuel powerhouse cavern; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern are disposed lengthwise in a line; the auxiliary powerhouse cavern, the first safe powerhouse cavern, the nuclear fuel powerhouse cavern and the second safe powerhouse cavern are connected in sequence; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern each are connected to the primary traffic tunnel.

13. The method of claim 7 , wherein the combined caverns comprise an auxiliary powerhouse cavern, two safe powerhouse caverns comprising a first powerhouse cavern and a second powerhouse cavern, and a nuclear fuel powerhouse cavern; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern are disposed lengthwise in a line; the auxiliary powerhouse cavern, the first safe powerhouse cavern, the nuclear fuel powerhouse cavern and the second safe powerhouse cavern are connected in sequence; the auxiliary powerhouse cavern, the two safe powerhouse caverns, and the nuclear fuel powerhouse cavern each are connected to the primary traffic tunnel.