Recently，the State Council of China has considered the important projects in 2016. And the scheme of undersea tunnel from Yantai to Dalian has been put forward officially.
This undersea tunnel refers to the distance from Lvshun to Penglai, Yantai. It is about 123 kilometers long and 20~30 meters deep, the deepest place is 70 meters. The speed of train is designed 250 kilometers per hour, at that time, it only takes 40 minutes from Dalian to Yantai.
It is known that this project will adopt whole undersea scheme and train will carry cars to pass through. The project scale of north and south has been confirmed. This whole undersea tunnel scheme doesn’t need any islands or bridges to provide connection and support.
Because of obstruction of the Bohai Gulf, railways and highways have to move around Shanhaiguan, the distance is over 1600 kilometers. Even if navigation was dredged between Yantai and Dalian, it also cost 6 hours at least.
After its opening to traffic, the time from Shandong to three provinces of northeast of China will be shortened largely. Yantai will be a transportation junction and an important bridgehead from northeast to the inland of China, as the second channel. At the same time, it will relieve the transportation pressure from the north to the south.
The geological conditions undersea are quite complex, exploration and excavation are also difficult. And problems will be inevitable during the construction of project, such as, water seepage, air leakage and corrosion, etc. So efficient supporting method should be adopted.
Sinorock is a manufacturer of professionally exploring, producing and selling rock bolt products. Self drilling anchor bolt is also a popular and advanced support method recently, applying in global projects with different geological conditions, which can combine drilling, grouting and anchoring together to provide efficient support for project.