"I have waited for more than 10 years and finally can sit down with the Chinese people's own submersibles. I speak Chinese in the submersibles and look at Chinese characters. It feels good." After more than a year, Tongji University Ocean and Earth Zhou Huaiyang, a professor at the School of Science, still remembers the excitement of "rounding a dream for many years."
On June 18, 2013, 52-year-old Zhou Huaiyang became the first “passenger†to take the “Zhenlong†dive, in the upcoming “Zhenlong†No.3—2014 experimental application voyage. He is expected to carry the "Dragon" to the deep sea hydrothermal event in the southwestern Indian Ocean.
In 2012, the “Zhenlong†successfully reached the seabed of 7062 meters in the Mariana Trench, setting a new world record for working manned submersibles. As the conditions for the normal operation of the submersibles at this stage are still incomplete, the China Oceania Association, as the owner, plans to carry out the experimental application of the “Zhenlong†in three to five years to complete its transition from the sea trial to the normal operation. .
Unlike the submarine, R&D and design engineers, the “Zhenlong†has been more like a deep-sea taxi since the launch of the pilot application voyage in 2013. It is equipped with trained scientists, media reporters and other passengers. "To conduct a deep-sea exam.
"'蛟龙' lights up the Chinese's 'deep sea dreams'. Chinese scientists can take their own submersibles, go deep into the sea, watch the deep sea, and study the deep sea." 77-year-old famous marine geologist, academician of the Chinese Academy of Sciences, Wang Pinxian called, "Hello in the deep sea, the Chinese are here!"
Take a look at the deep sea research in the "Dragon" and say "talking to the picture"
In August 2013, China's polymetallic nodules exploration contract area, which is the chief scientist of the China Ocean Environmental Project and the researcher of the Second Division of the Oceanic Institute of the State Oceanic Administration Wang Chunsheng, came to the sea for the eighth time. Different from the past, this time he took the “Zhenlong†to the depth of 5000 meters at the bottom of the sea to observe the giant benthic organisms in the original ecological environment.
“Just like tourists are not satisfied with the promotional videos of the scenic spots, scientists always hope to go to the scene to observe and sample.†Asked why they must dive, Wang Chunsheng played an image.
What kind of creatures will be seen after dive, Wang Chunsheng already has a spectrum in his heart. Since he began researching deep-sea biology in 1996, he has analyzed a large number of videos and photographs taken by the countries of Germany, Russia and the United States, as well as the International Marine Multi-Metal Joint Organization, in the East Pacific Ocean. Since 1999, he has analyzed more than 200 hours of underwater video and tens of thousands of underwater photographs of China's polymetallic nodule development area.
However, when he "sit" to the bottom of the sea, he was shocked: three white sea cucumbers came into view at the same time, and during the next three hours of operation, up to six white sea cucumbers could be seen at the same time. According to the video data taken by the deep sea camera and camera system in 1999, it is estimated that there is only one giant benthic organism in about 45 square meters. In the previous high-definition camera, there were not so many giant benthic organisms.
Before departure, Wang Chunsheng thought that there would not be too much excitement. This dive made him excited not only by the number of creatures, but also by the types of giant benthic organisms. “A sneak discovery and harvest is more than the sum of the giant benthic organisms we found on board in the region over the past decade or so.â€
Li Xiangyang, a senior engineer of the Equipment Investigation Division of the China Ocean Association, made a statistic. So far, nearly 20 scientists and engineers have participated in the dive of the "Jianlong".
After returning to the mother ship, geologist Dong Yanhui sighed: "I know that the gap between the expectation and the actual situation is very large, and my imagination is very poor." In the mountains of the South China Sea, all kinds of weird creatures make the top marine life. The taxonomist Li Xinzheng lamented: "I haven't seen pictures, and I haven't read them in the literature." "80" female doctor Tang Limei also found that the underwater scene is more beautiful than she expected. Even the experienced submarines often produce the feeling of "Liu Yujin Grand View Garden".
Exploring the "source" of the South China Sea and the ocean
On July 16, 2013, Wang Pin first took the rain from Xiamen Dongdu Wharf and boarded the “Xiangyanghong 09†ship. After listening carefully to the report of the results of the first experimental application voyage Nanhai flight segment, the old gentleman was very excited.
In June of that year, the “Zhenlong†carried out the first experimental application voyage of the first voyage in the South China Sea, successfully carried out 10 dives, completed the calibration of the ultra-short baseline positioning system, and the long baseline positioning system test, Cold Spring District. And the "Shanlong Haishan" area scientific investigation and other tasks.
"About half of the world's marine economy comes from the deep sea. In the past, Chinese scientists' research on the deep sea was often based on foreign literature and pictures. This time we found abundant manganese nodules and more in a little-known Xiaohaishan in the South China Sea. A variety of marine life. This shows that the 'goods' in the South China Sea are much richer than we think." Wang Pinxian said.
In 2013, “Zhenlong†carried out 20 submersible operations in 113 days. Wang Chunsheng concluded that the number of samples of giant benthic organisms obtained by scientists exceeded the sum of the samples obtained in the past 20 years in China, and the quality was better.
Li Xiangyang told reporters that according to the current staged research results, in the first experimental application voyage of the "Zhenlong" in 2013, one new biological species, four biologically suspected new species, and 46 new biological species were recorded, especially in the South China Sea. The basalt was first discovered, which provided an important scientific basis for revealing the geological evolution of the South China Sea.
Opened the 2014-2015 "Jilong" experimental application voyage mission demonstration materials, the reporter found that the voyage mission in addition to the China Ocean Association "12th Five-Year" Ocean Research and Research Program major projects, as well as the 863 Program, 973 Program, National Natural Science Funds and other projects involve many subject areas such as marine life and marine geology.
Repairing the "internal power" ability to change the "蛟龙" technology advantage for deep sea exploration and research advantages
On June 20, 2013, Yang Qunhui, the first female passenger of the “Jianlongâ€, an associate professor of the Ocean and Earth Science Institute of Tongji University, successfully completed the dive mission. This is the fourth consecutive dive of the first experimental application voyage of the “Zhenlongâ€. Homework creates a density record that has never been seen before.
Liu Feng, director of the Office of the China Ocean Association, commented that this not only proves that the technology of the submersible is stable and superior in performance, but also shows that the technical support team has improved to a new level. “Basically, the first day to decide to dive, the next day will be able to dive. Go on. There was no such grasp in the previous sea trial."
The long baseline positioning system tested in the South China Sea has achieved a positioning error that is basically within the size of a book, and allows the “Zhenlong†to have two positioning systems: a more accurate long baseline, and a more stable and economical ultra-short baseline. . In terms of sample collection, “Zhenlong†has a unique advantage. In addition to the rock and crust samples, the robot can grasp various moving creatures. The extreme terrains of the seabed, seamounts, and trenches have left the posture of the "Dragon". In the first leg of the 2014-2015 voyage, the advantages of accurate positioning, high-definition shooting and accurate sampling have been further developed. The voyage acceptance expert group believes that the underwater biological image data taken by the “Zhenlong†is completely It can compete with leading international countries such as the United States.
“The previous sea test was like a college entrance examination. The experimental application is like going out of school to the society after graduation. The submersible should really play a role and require the submarine to have a good running-in process with the scientists. We just want to put it in the experimental application voyage. The experience in this area has gradually accumulated." This is the submarine, the deputy commander of the voyage scene, Ye Cong.
In the first flight segment of the experimental application voyage in 2014-2015, the number of R&D personnel of the “Jianlong†was greatly reduced, and the maintenance and operation of the submersible gradually shifted to the national deep sea base management center. The number of new technicians on board will increase and will be put into practice.
With the cooperation of the water surface support, the submersible body and other departments, the experience of the submersibles has gradually become better.
On November 25th, the “Zhenlong†went to the Southwest Indian Ocean for the first time to carry out the scientific research and carried out the second and third voyages of the experimental application voyage in 2014-2015. This is the farthest distance and the transit time in the history of the 蛟 †voyage. The longest time will deal with more complex and varied weather and sea conditions. The area is surrounded by rock formations and the terrain is more complicated, posing greater challenges to the operation of the submersible. In particular, in this segment, the second batch of submarine trainees will start diving as a co-pilot.
In fact, the "Zhenlong" has more ambitions.
Liu Feng revealed that from June to September 2015, the “Zhenlong†will carry out the mission of ocean resources exploration, and once again cooperate with the Chinese Academy of Sciences pilot B sea abyss plan and 973 Yapu trench plan to return to the abyss to carry out operations and continue to play. The technical advantages of the “Dragon†in the international deep-dive world contribute to the development of the abyss. As the submarine operations become more and more skilled, after the operational operation, a submarine and two scientists may be arranged for submarine operations.
Hexagonal boxes
are made of heavy galvanized wire / ZnAl (Galfan) coated wire / PVC or PE
coated wires, the mesh shape is hexagonal, with the quality of high corrosion
resistantance, high tensile strength. The gabion boxes are used widely in slope
protection, foundation pit supporting, mountain rock holding, river and dams
scour protection.
1.Material:Galvanized wire, Galfan Coated wire, PVC coated Galvanized Steel wire.
2. Weaving types:
normal twist, reverse twist, double twist.
3.Packaging:compressed and packed with pallets.
4. Feature:
Firm structure,
Flat surface, Great corrosion resistant, Oxidation resistant, Durable, High
intensity.
We follow the major international standard in our manufacturing process.
ASTM 975 Standards:
Style 1 Galvanized wire as per ASTM A 641, class 3 soft temper
Style 2 Same as style 1 with extra coating with PVC.
Style 3 Zn-5Al or Zn-10Al coated wire as per ASTM A 856, also known as Galfan wire.
EN 10223-3 Standard:
Galvanized wire meets EN 10244-2 and old BS 443
Wire tensile strength is between 380N/mm2 and 550N/mm2 as per BS 1052.
Our Tolerance Standard:
On the hexagonal double-twisted wire mesh, size of opening should not exceed +/-5% on the nominal dimension
Hexagonal Mesh Gabion Regular Sizes
|
Parameter |
Finish Type |
|
|
Galvanized |
PVC Coated |
|
|
Mesh |
60x80mm,80x100mm & 100x120mm |
60x80mm,80x100mm & 100x120mm |
|
Mesh Wire |
2.4/2.7/3.0mm |
2.4/2.7/3.0mm |
|
Selvage Wire |
3.0/3.4/3.8mm |
3.0/3.4/3.8mm |
|
Binding Wire |
2.2mm |
2.2mm |
Hexagonal Mesh Gabion Box,Extra-Safe Storm & Flood Barrier,Woven Gabion Baskets,Gabion Basket Mattress
Anping Enzar Metal Products Co.,Ltd. , https://www.enzarmetal.com