Planning of Laokou Shipping Hub Project

General layout and main buildings of the project

From left to right, the overall layout of Laokou Navigation-Power Junction Project is: left bank combined earth dam, ship lock, sluice dam section, sluice dam, riverbed power station and right bank combined gravity dam, with total dam crest length1025.52 m. ..

Engineering construction planning

1, construction traffic

Left bank external communication highway: it starts from Songbailing at the head of the left bank dam at Shangba site and ends at Nanning-Baise secondary highway, with a total length of about 3.7 17km. External traffic highway on the right bank: This highway starts from the highway south of Datong Street downstream to Yangmei Ancient Town at the foot of Datong Mountain and ends at the dam head on the right bank of the dam site, with a total length of about 4.52 1km.

2. General arrangement of construction

It is divided into three construction areas: left bank construction area, right bank construction area and Vero sand processing area, covering an area of11.72m2..

Step 3: yard

There is no soil yard in this project, but there are three gravel yards: Yangmei gravel yard, Niujokan gravel yard and Vero limestone artificial aggregate yard.

4, abandon slag field

The total amount of earthwork excavation in this project is 9,543,700 m? (natural party), the amount of waste slag is 8.3708 million m? (Song Fang), there are three garbage dumps: Songbailing garbage dump on the left bank, flat garbage dump on the left bank and garbage dump on the right bank.

5, waterway regulation project

The waterway regulation project mainly focuses on the tail section of Laokou Hub (involving 12 beach hazard) and the section from Laokou to Nanning (34. 1km, involving 14 beach hazard), and mainly adopts dredging, reef blasting, dam building and other regulation measures.

6, the construction plan

The total construction period of this project is 46 months, of which the construction period of the ship lock is 27 months, the navigation period of the ship lock is 38 months and the power generation period of the first unit is 38 months.

Reservoir inundation, land occupation and resettlement planning

1, normal flooding

Laokou Reservoir normally inundates 640.46 meters of land. By the time the planned level year is 20 12, there are 9,623 people in the reservoir area, including 706 1 person who needs production development planning and 29 people who need to emigrate to build houses.

Step 2 temporarily submerge

When the once-in-a-century flood occurred, the cultivated land area was temporarily flooded 1, 5 1, 000 hm, and the affected population was 3 1, 234 people. Temporary flood shelters are designed to avoid floods.

3, hub land

The land area of the hub project area is 234.28hm, of which the permanent land area is 138.6 1hm, the temporary land area is 95.68hm, the production resettlement population is 1084, and the construction resettlement population is 27 1.