Cairo, February 1 (Reporter Huang Peizhao) The Pier 5 project of Cotonou Port in Benin is an EPC general contracting project undertaken by China Harbor. The project mainly includes two 100,000-ton general berths with a total length of 550 meters of quay shoreline, 350 meters of extension of the south breakwater, 891 meters of east revetment, 210,000 square meters of land formation and foundation treatment, 1.91 million square meters of port basin dredging and demolition of the old embankment. After the completion of the project, it will greatly increase the throughput of the port, effectively promote the growth of the local economy and the economy, and benefit the national plan and people's livelihood of Benin. A few days ago, a reporter from People's Daily Online went to the project site to interview and experience the selfless dedication of Chinese builders and the scene of the serious expansion of the new port terminal for the local area.
Finally gnawed the hard bones.
The twilight is blank and the sky is getting brighter. At 6 o'clock in the morning, the Gulf of Guinea in the Atlantic Ocean during the monsoon period is still not calm, and the dark tide is surging in the haze, constantly tearing the night twilight, and where the sea and sky meet in the east, the morning sun is vaguely seen emerging from the sea level.
At this time, a traffic boat slowly approached the newly built temporary wharf, there were two groups of people ** wrong, one of them was dressed in the twilight of the return, the other group was facing the morning sun to board the ship, bustling, greeting each other, the day shift plug-in machine operator Yuan Jian said to the night shift driver Fu Changrong: "Old Fu, how much is the night shift?" ", we hit 39 on the night shift, you have to work hard, brothers on the day shift, "You have worked hard, go and rest, leave it to us, today we must 'gnaw' the remaining 45 of the first main node of the east revetment", "Yes, believe you, we have seen hope", while saying and walking, Yuan Jian hurriedly took the day shift team to step onto the traffic boat, shouting "fifty-one".
Living up to expectations, at 18:45 in the evening, with the sound of cheers on the plug-in platform, it means that the east revetment connection section has been successfully completed. After more than 6 months, the project team of Pier 5 in Cotonou, Benin, has made concerted efforts to overcome difficulties, break through technical barriers one by one, see through the ever-changing wind and rain waves, iteratively update equipment, and take a solid step forward in the project.
Wang Zhaoyan, the construction manager, said with emotion: "I finally gnawed the hard bone of the east revetment, and the follow-up is to open up the work situation and promote the peak of project construction." ”
Scientific and technological innovation promotes the high-quality development of projects.
Under the conditions of uncovered sea area and affected by the long-term wave of the Gulf of Guinea, the number of operating days is limited, and it also faces construction difficulties such as large geological mutation, high strength of hard shell layer and decaying wood layer, which is very unfavorable to construction safety and quality control. The construction process of PVD (drainage board) on the water has been plaguing the international engineering industry, especially the cases of geological mutation, the existence of hard interlayers, and almost no project experience for reference, and these are all "encountered" in this project without exception.
After systematically sorting out the equipment and methods of PVD construction on the water at home and abroad, the project department innovated independently and developed a barge with double-line drainage board (PVD) application platform system, which can overcome the impact of long-period waves and large surges on the construction of PVD on the water, and at the same time, it is equipped with a high-power hydraulic vibratory hammer to drive the conduit into the design depth with the PVD, and leave the PVD inside the soil by taking off the shoes.
In the early stage of PVD application, Deng Jibo, the construction supervisor, found in the continuous experimental construction that the conventional disposable pile shoes are very easy to be damaged when they encounter the hard shell layer during the application process, resulting in pipe blockage and low retention rate. ”
Thinking of this, he said to do it, to set an example to mobilize the construction team, whether it is the local workers or on-site operators are actively exerting their subjective initiative, many attempts to use construction waste to assemble steel plates, shackles, chains, etc., and finally made a reusable pile boot for PVD plugging and punching, and after many generations of upgrades, after the installation of innovative pile shoes, and then with the 3rd generation of new vibrating hammer, successfully penetrate the hard interlayer, the water PVD construction efficiency has been greatly improved, and has been highly recognized by the project owner. In the presence of international consultants, it was proved that innovation is the only choice and the most feasible option for the construction team in the face of difficult and complex environments.
Relying on the barge with double-line drainage board (PVD) platform system, the project has obtained a utility model patent certificate for a barge with double-line drainage board application platform system, and successfully applied for a barge with double-line drainage board application platform system and construction method, a geotextile underwater paving equipment, a variable contact bridge and water operation platform and other inventions and utility model patents, which not only verified the feasibility of the construction of the offshore plug-in platform independently developed by the project in harsh sea conditions and complex geological conditions. It also demonstrates the project team's ability to overcome difficulties and innovate in science and technology, and promotes the high-quality development of the project.
Hard work can yield fruitful results.
In order to be familiar with the construction process, the system touches each construction step, and takes the initiative to ask Ying to serve as a technician of the sub-project, stationed at the offshore construction site, and really works hard in every construction link under the condition of ensuring safety and quality requirements.
In order to be stable and efficient, he optimized the steps of each link to ensure synchronous and flowing construction, and put an end to every worker stuck and dragged. Lao Fu, the operator of the plug-in machine, often said: "I now have a look, and the local workers know what to do. ”
Each link, and even the connection of each action is affecting the overall construction efficiency, affected by the cumbersome steps and links are not connected, the original one PVD takes 10 minutes to complete, and only 48 pieces of work are completed in 8 hours, and after each link is optimized, it only takes 5-6 minutes, and 20-30 more can be completed within 8 hours of working time. In order to ensure the overall progress of the project, he firmly believes that "the nine-story platform starts from the soil", and is interpreting the meaning of hard work and fruitful results with actions.
Energetic and energetic to embark on a new journey.
On December 28 last year, at 10 o'clock in the morning, Lao Xiao, the commander of the lifting of the plug-in platform, cut through the sky: "No. 1 and No. 2 hooks are lifted!" "The PVD construction of the east revetment has come to an end, but it also symbolizes the beginning of a new journey for the PVD of the South Wave.
Zhang Xingxing, the captain of Yuegong Barge 51, said when he lifted anchor: "Nine months of day and night, the barge accompanied the water plug-in platform through countless wind and waves, we are now going to the sea area construction with greater wind and waves, farther away from the revetment, how many difficulties and obstacles are not yet known, but I firmly believe that we will complete it on time and with quality!" ”
At this time, the second water plug-in platform at berth 8 in the port is quietly looking at the breakwater, which is the battlefield it will go to in a few days, when the water PVD construction of the double water plug-in platform will be started. After the experience of the first water plug-in platform as the cornerstone, the second is already an advanced version.
Luo Yujian, the head of the maintenance department, said: "All the way to the upgrade process of this water plug-in platform, the second new machine has been fully upgraded, I firmly believe that it will be able to 'fly' when the time comes." Li Honggang, assistant manager and minister of engineering, said: "Just look at the dazzling pile boots, you can do a special science and technology exhibition, after this" a battle ", the project brothers are more cohesive and combative, although the project task is heavy and long, but we firmly believe that they can be overcome one by one." ”