The technology and methods involved in pipeline laying in shallow water have evolved to the level of routine and commonplace. However, regarding the unexpected deepwater complexity, the traditional pipeline laying tec...The technology and methods involved in pipeline laying in shallow water have evolved to the level of routine and commonplace. However, regarding the unexpected deepwater complexity, the traditional pipeline laying techniques have to confront many new challenges arisen from the increase of the water depth, diameter of the pipe and the welding difficuhy, all of which should be modified and/or innovated based on the existed mature experiences. The purpose of this investigation is to outline the existing and new engineering laying techniques and the associated facilities, which can provide some significant information to the related research. In the context, the latest deepwater pipeline laying technology and pipe laying barges of the renowned companies from Switzerland, Norway, Italy etc., are introduced and the corresponding comparison and discussion are presented as well.展开更多
The construction of the Lao telecommunications satellite ground station was completed and passed its initial acceptance by a working group assigned by Lao Government in March.The station is located on the Mekong River...The construction of the Lao telecommunications satellite ground station was completed and passed its initial acceptance by a working group assigned by Lao Government in March.The station is located on the Mekong River banks.The station covers 12 hectares,of which 10000m2 are construction area.The completion and acceptance of the ground station marked progress in the Lao telecommunications satellite project,laying the foundation for the follow-on Laosat-1 TT&C system and equipment installation and debugging.展开更多
基金the National High Technology Research and Development Program of China (863 Program,Grant No.2006AA09A105)
文摘The technology and methods involved in pipeline laying in shallow water have evolved to the level of routine and commonplace. However, regarding the unexpected deepwater complexity, the traditional pipeline laying techniques have to confront many new challenges arisen from the increase of the water depth, diameter of the pipe and the welding difficuhy, all of which should be modified and/or innovated based on the existed mature experiences. The purpose of this investigation is to outline the existing and new engineering laying techniques and the associated facilities, which can provide some significant information to the related research. In the context, the latest deepwater pipeline laying technology and pipe laying barges of the renowned companies from Switzerland, Norway, Italy etc., are introduced and the corresponding comparison and discussion are presented as well.
文摘The construction of the Lao telecommunications satellite ground station was completed and passed its initial acceptance by a working group assigned by Lao Government in March.The station is located on the Mekong River banks.The station covers 12 hectares,of which 10000m2 are construction area.The completion and acceptance of the ground station marked progress in the Lao telecommunications satellite project,laying the foundation for the follow-on Laosat-1 TT&C system and equipment installation and debugging.
