Huangpu River also does a "physical examination"?Come and see which "indicators"

As a golden waterway and transportation arteries in Shanghai, Huangpu River "medical examinations" every year. What indicators do you need to test the medical examination of the "Mother River"? What are these indicators? With these questions, the Coast Jun followed the staff yesterday to take the measured ship "Dahua 01" and observed the Huangpu River hydrological test.

Take samples every hour

The staff uses a horizontal water pickup to "take water" from the different depth of the river center

At 2:50 pm on the 19th, the measurement ship taken by Coast Jun arrived in the designated measurement area near Matsuo Sanqiao. After the ship stopped, I saw that the staff used a 1 -liter of vertical water sewers to "take water" from the different depth of the river center and poured into the container. "The sampling point must be taken every hour, and the" physical examination "needs to be completed 30 times for 29 consecutive hours." Wang Huaili, deputy general manager of Shanghai Dahua Surveying and Mapping Technology Co., Ltd., told the Coast Jun that it takes so long to go through the tide. "Two rises and two falls", the data obtained in this way is the most comprehensive, and the water taken out will be sent to the laboratory to analyze the water quality composition.

Remove the water irrigation into the container

On the right side of the measurement boat, there is also a "staff" hidden in the bottom of the water -acoustic Doppler flow velocity sectional instrument. It can collect data such as water flow speed and direction, water temperature, and water flow at different time. "Hydrological testing for Huangpu River is like a medical examination at the hospital. Doctors detect various indicators through blood drawing and CT, and finally judge the health of the health through comprehensive analysis." It is said that due to the narrow distribution of the test area, a total of 4 ships performed a hydrological test at the same time yesterday, and each ship was set to "run back and forth".

"Physical examination" also needs to pick days

The Huangpu River will conduct two hydrological tests twice a year, divided into floods and dry seasons. Among them, the physical examination of each quarter must be refined to the three tide segments: large, medium and small. The tide tide is the strongest, the tide is the largest, the tide tide is the weakest, and the tide is the smallest. Three different types of different tide types are to comprehensively monitor Huangpu River's water -flowing Saudi characteristics under different tide power.

Yesterday's "medical examination" was the flood and small tide of the Huangpu River. After this "medical examination" was completed, the Huamu River hydrological test project in the Hongyue Huangpu River, which lasted nearly half a month, also ended. Wang Huaili said that in the tide period, in addition to "taking water", the staff would also use mussel -type grasping or cone samples to collect the bottom -quality samples. This is a particle size composition and rock and soil components used to analyze the bottom quality. "We have been doing for the Huangpu River 'physical examination' for 7 years. We have been pleased to find that with the maintenance and governance of the Huangpu River Channel in recent years, the sand content of the water body has decreased."

Regularly carry out the Huangpu River hydrological test, you can grasp the trend of Huangpu River, mud Saudi characteristics, terrain and geography, and the evolution of the riverbed. Through the accumulation and analysis of data, it will ensure the safety of the Huangpu River navigation, engineering construction, water environmental protection, flood prevention safety It has an important role and can also provide technical support for the development and construction of Huangpu River and comprehensive management. Xu Wanyi, Secretary of the Party Committee and Director of the Shanghai Port and Airlines Business Development Center, said: "In the next step, we plan to develop the relevant hydrological test data of Huangpu River in the direction of visual and intelligent, thereby improving the intelligent management level of the channel."

Gold Coast Studio

Author | Qiu Yingqiong

Photo | Qiu Yingqiong

Editor | Ren Tianbao

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