At 9:20 on June 8th, in the planning of the Zhejiang East Pole Project submarine cable route, the "Zhoudian 10" ship was driving on the sea, and a multi- beam echo sounder was connected to a steel pipe on the ship's side. To the sea. At the same time, on the computer in the cabin, the high-precision topography of the seabed is presented in front of everyone in the form of 3D images. This is the first set of commissioning survey scenarios conducted by the first “submarine cable integrated detection system †in China.
It is understood that this system includes a total of six advanced instruments, and is the first comprehensive detection system for submarine cable construction and operation and maintenance in China.
The multi-beam echo sounder and Doppler velocity profiler were tested on the same day. The multi-beam echo sounder uses ultrasonic waves to detect the deepest 500 meters deep seabed with a horizontal detection range of 1,200 meters. The topography of the seabed it detects can be reproduced on a computer in 3D. The Doppler velocity profiler also uses ultrasonic waves to divide 300 meters deep seawater into 172 layers and measure the flow and direction of seawater at different levels. “With these two detection instruments , the laying attitude, operating conditions, and the topography of the seabed can be clearly seen in the future.†Yu Enke, deputy chief engineer of Zhoushan Power Supply Company, said that the system will help improve the accuracy and operation of the laying of submarine cables. reliability.
In addition to the two instruments, the submarine cable integrated detection system also includes four instruments such as a submarine cable tracker, a submarine static penetrator, a temperature probe, a seabed column, and a box sampler. "The instruments we use are at the top international level," said Yuen Ke. It is understood that this system has a total investment of nearly 10 million yuan. After many sea trials, it will be applied to the investigation, design, construction, and transportation inspection of submarine cables in Zhoushan. Yu Enke said that after the system is put into operation, it will enable China's submarine cable design, construction, and transportation inspection technologies to reach a higher level.
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