The marine environment forecast guarantee helps the Shenzhen -China Channel E21 pipe festival completion installation to the submarine tunnel to initiate sprints!

Author:National Ocean Forecasting Tai Time:2022.09.21

From September 19th to 20th, 2022, after construction operations such as floating transportation, tiered, sinking, pulling, and hydraulic pressure, the third section of the Shenzhen-Middle Channel E21 completed the underwater millimeter-level docking. At this point, the total length of the Shenchuan Tunnel was 4702.8 meters, and the remaining pipeline was 332.2 meters long.

The E21 pipe section of the sinking sink is the standard tube section. The structure is 165 meters long, 46 meters wide, 10.6 meters high, and weighs about 80,000 tons. The marine environmental forecast guarantee team fulfills its duties and scientific forecasts, which provides a solid and powerful guarantee for the Shen Fang of the E21 pipeline.

The waves in the construction waters in September were mainly affected by typhoons and cold air. The E21 pipeline installation window period is mainly affected by weak and cold air. The weather is mainly cloudy, and occasionally there are strong convective water drops. Since the first decision-making committee of E21 on September 14, the marine environment security team noticed that the overall marine environment during the window period was better. On September 19-22, there was a major weather process in the large window period of the E21 pipeline construction. The guarantee team conducts daily discussions on the time and intensity of the weather system according to the latest data, and rolled the forecast conclusion to roll up the prediction of the preliminary preparation of the E21 pipeline festival.

On September 16th, at the second decision -making committee of the E21 Pipe Festival, the guarantee team gave the latest refined forecast conclusions on the waters near Guishan Island and Western Artificial Island. On September 19-22, there is a major weather process in the E21 pipeline large window period: affected by a weak and cold air, from the afternoon of the 20th to 22nd, there are east-northeast winds 4-5 in the waters near the island tunnel, Guishan The waters near the island are east-northeast wind level 5, gust 6, and accompanied by the process of missionary precipitation.

During the installation of the operation of the festival, the construction site and the camp forecast guarantee personnel were on duty for 24 hours, closely monitor the radar back wave, pay attention to the changes in the latest weather system situation, report the latest forecast conclusions in a timely manner, update the live information of the weather waves without interruption, and ensure that the E21 pipe festival festival festival Complete the installation work smoothly.

From September 19th to 20th, during the doy of the E21 pipeline festival, the Pearl River Estuary Basin was located at the rear of the high pressure. There was no strong weather system. The maximum wind is 3-4.

At 15:25 pm on the 19th, the on -site guarantee personnel observed that there was a strong convection in the Hong Kong Island. It is expected that the floating transport formation on the edge of the cloud group after 40 minutes, which has a small impact.

At 00 on the 20th, the E21 tube festival successfully arrived at the sinking installation waters. At 05 on the 20th, the E21 pipe festival began to install the pipe tube. The 160 ° -340 ° changes, the weather is cloudy, the visibility is 10-15km, and the storm is good, which is conducive to the sinking installation of the E21 pipeline.

The E21 pipeline guarantee team has more accurate forecasting of various elements during the launch window, providing a strong marine environment guarantee for the smooth and smooth release of the E21 pipeline.

Writing/Photo Conferring: Zhang Chi

Video shooting: Zhang Chi Yu Qinglong

Video production: Wang Xiaoyu

The marine environment forecast in the next two days

Expected tomorrow,

There are 2 to 3.3 meters in the north of the Bohai and Yellow Sea to Dalang District;

There are 1.1 to 1.6 meters of light waves from the southern and central parts of the Yellow Sea;

The waters near the East China Sea, the Diaoyu Islands, the Taiwan Strait, the Toyo of Taiwan, and the Zhonglang District of 1.5 to 2.4 meters of the Basta Strait;

There are light waves of 0.8 to 1.1 meters in Beibuwan;

The South China Sea has 1.3 to 1.8 meters in the middle wave.

Expected the day after tomorrow,

The Bohai and Yellow Sea northern parts of the Yellow Sea maintained and extended to the south of the Yellow Sea, the waters near the East China Sea, the Diaoyu Islands, the Taiwan Strait, and the northeast of the South China Sea.

On September 21st to 25th

Beautiful island waters sea conditions

Expected tomorrow,

There are 2.1 ~ 2.4 meters near the waters near Long Island and Liu Gong Island. It is not suitable for Shanghai Island to travel by boat;

There are 1.8 meters of Zhonglang near the sea area near Diaoyu Islands. There are 1.3 ~ 1.7 meters near the waters near the mountains, Jiezhou Island, Yongxing Island, Huangyan Island, and Yongshu Reef. These islands are more suitable for traveling by boat;

The waters near the other beautiful islands in my country are light waves, with good sea conditions, and they are very suitable for traveling and island.

Beautiful island refers to the following 35 islands:

Juehua Island, Changshan Islands, Bodhi Island, Long Island, Liu Gong Island, Lingshan Island, Qinshan Island, Lianjima, Chongming Island, Shengsi Islands, Sushan Island, Dongji Island, Putuo Mountain, Dachen Island, Yuhuan Island, Dongdong Tou Island, Nanji Island, Laoshan Island, Sandu Island, Pingtan Island, Meizhou Island, Dongshan Island, Diaoyu Island, South Australia Islands, Wanshan Islands, Sichuan Shan Islands, Hailing Island, South Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, Dong Island, East Island, East Island, East Island, Dong Island Dazhou Island, Boundary Island, Wuzhizhou Island, Yongxing Island, Huangyan Island, Yongshu Reef.

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