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Harmony in the air throughout the country encouraging young people eager emulation achievements celebrate 53 years on the traditional LHTNVN (15/10/1956 - 15/10/2009), the implementation of Resolution Assembly First XI DTNCSHCM Company; Youth Song Da Corporation has 10 launching ceremony of the youth projects, works to expand drilling wells tower pressurization Nam Chien hydropower.
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Is on the hydropower project Sekaman 3
08/17/2010 16:44
Is on the hydropower project Sekaman 3

Is on the hydropower project Sekaman 3

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Corporation Da Da Group 10 was assigned to the construction line of energy Sekaman 3 hydropower project in the Democratic People's Republic Laos - hydropower projects first offshore Vietnam, with a capacity of 250 MW, was started in 2006, is expected to power in 2011.


online project has long tunnel of 8.6 km, two vertical wells each 170m deep wells, a pressurized tower 150m deep and three sub-basement to serve construction of the tunnel length is 300 meters on average each tunnel.



energy lies primarily in major regional geology, rocks are strongly weathered; much space is land and mud. Song Da 7.10 Enterprise under the Song Da Corporation, a unit 10 to execute this project. Although the contractor has extensive experience in handling incidents in tunnels but in the process of construction units have encountered many difficulties. With the efforts to promote high levels of staff members to present the construction unit has completed 80% workload. However, the remaining work is very arduous, especially in the mirror position of 9 and No. 8 (see diagram).


Mirror No. 9 after the end of March 2010, construction units conducted by drilling vertical wells and Robin, while bottom-up was conducted 60m is met near the weak soil caused landslides filled the entire section on more than 40 m length horizontal tunnels, interrupting the execution of this well.


Mirror No. 8 after going through the area near the 900m, the bottom of an ancient underground springs 100m, the construction company had used the special construction methods to construction near the 900m tunnel, but to meet this large amount of underground water, the roof of a mud pit subsidence has caused thousands of cubic meters of mud covered the entire 100md basement flooding, the construction was not possible landslides due to soil, create a hole tens of meters above the ground, although more than 100 meters deep underground.


Currently, the company owner, design consultants are meeting goals to make a reasonable plan to deal with, saving and secure construction Quick, strong and secure for people and equipment.


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