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浅析内陆湖泊浅水地区长距离大口径管道水上连接技术
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作者 陈文山 刘国强 +3 位作者 曹云祥 梅路生 劳永聪 张正才 《安装》 2018年第5期43-45,共3页
本文结合大理市三库连通洱海应急补水工程——茈碧湖虹吸取水管道工程实例,介绍了一种长距离、大口径管道水上管口连接技术。根据项目的施工可行性及质量控制措施,采用在岸边分为多个作业点将管道快速组对为多段,运输至湖面组对为整根... 本文结合大理市三库连通洱海应急补水工程——茈碧湖虹吸取水管道工程实例,介绍了一种长距离、大口径管道水上管口连接技术。根据项目的施工可行性及质量控制措施,采用在岸边分为多个作业点将管道快速组对为多段,运输至湖面组对为整根管线后进行沉管的施工工艺,并详细阐述了其中关键的水上管道连接施工技术,即分段管道浮运封堵、分段管道水上连接以及受力分析等。该技术既解决了浅水地区长距离大口径管道水上运输技术难题,又解决了水上管口组装连接难题,为类似工程项目提供实践经验。 展开更多
关键词 湖泊浅水地区 长距离 大口径虹吸取水管道 水上连接技术
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Investigation and Study on the Alien Species in Aquaculture in the Lower Reaches of the Yangtze River
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作者 CHEN Jia-zhang SHEN Gong-ming +1 位作者 MENG Shun-long QU Jian-hong 《Agricultural Science & Technology》 CAS 2011年第7期1016-1019,1024,共5页
The lower reaches of the Yangze River is one of the central areas of freshwater shallow lakes in China and has the diverse climates with both warm temperate zone and sub-tropical zone,which makes it become one of the ... The lower reaches of the Yangze River is one of the central areas of freshwater shallow lakes in China and has the diverse climates with both warm temperate zone and sub-tropical zone,which makes it become one of the best areas for aquaculture,so nearly all of the aquaculture species from the world can live in the area.It is important for perfecting alien aquaculture species information data-base and environmental risk assessment system to investigate and study the aquaculture alien species in the lower reaches of the Yangze River.The results showed that the number of aquaculture alien species in the lower reaches of the Yangze River is 45 species,including 33 species of fishes,4 species of shellfish,7 species of crustaceans and 1 species of amphibian.Most of alien species are from America and the main transmitting way is intentional introducing. 展开更多
关键词 AQUACULTURE Alien species Lower Reaches of the Yangtze River Investigation and study
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