Who insists on doing a good job in engineering all his life?

Chen Yisheng insisted on doing the project well.

Chen has successively participated in the construction of Dalian Bay Cross-Harbour Tunnel, Dalian Port's 300,000-ton ore wharf, the new wharf of shipbuilding heavy industry reef, Xinghai Bay cross-sea bridge and other national strategic projects. He insisted on "the eye of doing a good job in engineering all his life", extended the sounding technology from the original two-dimensional to three-dimensional, innovated the installation and measurement technology of immersed tubes at sea, carved "China precision" with perseverance and ingenuity, and interpreted "China speed"

200 1, Chen participated in Shihu Port Project in Fujian, and the sea area was very complicated. In the absence of a depth sounder, only the "pumping pier" (with a level and a level ruler) can be used for water depth measurement. Putting a leveling ruler in a high-speed sea area is like practicing poplars crossing two or three knots. The reading time of sounding must be completed within 2 seconds when the counterweight touches the seabed, and the best reading time is less than 1 second.

In order to catch this 1 second, as long as there is no construction, he repeatedly practices his eyesight and reaction speed. Finally, he practiced a set of rapid reading methods into conditioned reflex, practiced the unique skill of accurately reading the leveling staff in seconds in high-speed sea areas, and created a miracle of manually measuring and controlling the elevation accuracy of caisson underwater foundation bed to millimeters.

With the full-scale start of the Dalian Bay subsea tunnel project, he launched an attack on higher-precision targets, proposed a stereo imaging measurement method, successfully introduced multi-beam measurement equipment and systems and optimized them, and realized the "millimeter-level" precision docking of submarine immersed tubes.

Awards live edition:

Dalian Bay subsea tunnel is 5. 1 km long and consists of 18 sections of giant prefabricated immersed tubes. The single immersed tube of the tunnel is180m long and weighs about 60,000 tons, which is equivalent to the displacement of an aircraft carrier. However, the error between the two immersed tubes should not exceed 10 cm, which is very demanding for engineering survey.

Engineering construction survey is the first, especially in the unpredictable underwater world. In the face of these huge projects, a small deviation of a measuring point may trigger a chain reaction, leading to incalculable losses. Therefore, Chen, a provincial surveyor, always asks himself that the data he reads every time is more accurate than the instrument. Chen is meticulous about measurement data and almost stubborn, and has become a recognized technical leader in the industry.

However, when building the first 300,000-ton ore wharf in China, he encountered an unprecedented setback. Due to the extremely complicated sea conditions in the construction sea area, advanced measuring equipment frequently made mistakes, and the whole project was forced to stop working. Chen thought hard and finally remembered a traditional manual measurement method taught by his master-painting water. In calm waters, painting water weight is a difficult technical activity; The difficulty can be imagined in the construction sea area where the water flow is complex and as deep as more than 30 meters.

In order to obtain accurate data and prevent the water weight from being washed away by seawater, Chen specially built a water weight of more than 40 kilograms. While throwing into the water, follow the trot, so that the measuring line always keeps the angle vertical, and there is only two or three seconds for reading during the running. In order to practice this kung fu well, Chen eats and lives at sea, holding more than 40 kilograms of iron bumps and practicing repeatedly.

During the eight-month construction of the 20,000-square-meter wharf, Chen insisted on throwing water and discharging it hundreds of times every day, so tired that his arms were numb and he still insisted on biting his teeth. In the end, the measurement accuracy of tens of thousands of points was successfully locked in the centimeter level, which protected another grand project from spreading slowly in the blue sea.