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“Nanhai No. 1†is about 7 meters long, will there be a major change in the salvage plan? A few days ago, the reporter interviewed Wang Renyi, the deputy commander of the “Nanhai No. 1†salvage work of the Guangzhou Salvage Bureau of the Ministry of Communications. Wang Renyi made it clear that although the size of the hull of the "Nanhai No. 1" obtained by the final exploration has changed a lot, the entire fishing step will not change.
Full decryption of the salvage process
It is understood that after the arrival of the lifting ship "Hua Tianlong", the position will be found around the "Nanhai No. 1", and the anchors will be anchored and the positioning piles will be installed. These working anchors are eight, each 800 meters long, and the eight angles are strict. Provisions. On the schematic diagram of the salvage plan, “Hua Tianlong†is like a huge sea spider, firmly nailed to the sea. Then the sinking hole at the bottom is launched, and the "Nanhai No. 1" is covered.
As can be seen on the schematic, a large number of huge concrete clots were placed on the top of the caisson to sink the sink. After the sinking well was completed, the operators began to excavate the silt on both sides of the sinking well and pass through the bottom beam to seal the opening of the sinking well. The original design of the number of bottom beams is more than 20 pieces, because the final exploration found that the "Nanhai No. 1" is more than a few meters in length, so the redesigned sinking well will also increase the bottom beam.
Wang Renyi specially introduced that the bottom of the bottom beam is the airbag. Wang Renyi said that the main function of the airbag is to protect the stability of the sinking well. At the same time, it acts as a pulley when the water in the sinking well is transferred to the full dive and the "Crystal Palace", with less friction.
According to the requirements, the sinking well should be a relatively sealed space after the completion of the sinking bottom beam. How do i do this? Wang Renyi said that there is a hydraulic plate under the bottom beam. After the completion, the bottom beam will be lifted up, so that the sinking well is closed.
After the bottom beam has passed, the lifting begins. After the sinking well was lifted off the ground, it was immediately matched with the full dive; the sinking was installed safely and accurately on the full dive deck immediately after installing the reinforcement. Then the whole submersible floated up, the sinking wells all exposed the water, and as the front tug progressed, it pointed to the "Crystal Palace."
How to ensure the balanced docking of the full dive and the "Crystal Palace" caisson movement track? Wang Renyi said that this is a fairly mature technology and there will be no problems. After the sinking of the well into the "Crystal Palace", the "gateway" of the "Crystal Palace" immediately entered the Helong program.
At this point, the "Nanhai No. 1" salvage process was completed.
Condensate remains to be cleaned
Wang Renyi said that the work that needs to be completed now is the cleaning and underwater positioning of the "Nanhai No. 1" condensate. "These preliminary work is very important." Yesterday, the Guangdong Geological Geophysical Engineering Investigation Institute specially invited reporters to interview the completed "Nanhai No. 1" underwater geological sampling task.
It is understood that the institute has drilled holes around the shipwreck to take the original soil samples every three meters and send them to the laboratory for analysis. At the same time, the site is tested in situ in soft soil and tested by hydraulic static probe. The sensitivity and bearing capacity of the sludge are compared with the parameters obtained from the indoor geotechnical experiment to further improve the accuracy of the exploration data.
The technicians found that the soft soil in the survey area is widely distributed, the layer thickness is large, the strength is low, it is easy to lose stability, and it is easy to compress and deform. They suggest that the underwater excavation and grading should be gentle to prevent the collapse of the soft soil underwater slope; due to the limited control scope of the borehole, attention should be paid to the influence of local sand in the soft soil layer on the construction of the caisson.
Tang Bingquan requested when investing in Yangjiang
Accelerate the construction of the "Nanhai No. 1" Museum
On March 2nd, Tang Bingquan, the executive deputy governor of Guangdong Province, went to Yangjiang City to investigate and demand Yangjiang to take the planning as the leader, accelerate the construction of “Nanhai No.1†museum, Yangjiang Port terminal and port, etc., and promote Yangjiang tourism brand to promote tourism and foreign trade. And the cause of opening up to the outside world is better and faster.
Tang Bingquan pointed out that Yangjiang has a strong foundation for tourism construction, huge potential, unlimited business opportunities and broad prospects. The next step is to do a good job in six areas: “having good ideas, having good planning, having a good environment, having a good brand, having a good group of partners, and having good institutional mechanismsâ€.
"Nanhai No. 1": The hull size has changed the salvage steps