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三峡站聚氯乙烯片土壤腐蚀行为研究 被引量:1
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作者 王永红 钟泽盛 李雅琴 《土壤》 CAS CSCD 北大核心 1997年第1期43-46,48,共5页
对埋藏在三峡土壤腐蚀试验站33年的聚氯乙烯片进行了分析,结果表明,塑料片除了外观出现变硬、变形、变色外,其物理、机械及电性能测试数据仍优于标准值.聚氯乙烯片在长期埋地的环境中自然老化速度较慢,耐土壤腐蚀性能良好.
关键词 三峡站 聚氯乙烯片 土壤腐蚀
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基于层次分析法的三峡通航e站评价指标体系探析 被引量:3
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作者 梅竞艳 韩天绪 陈毅 《中国水运》 2023年第1期56-58,共3页
三峡通航e站为社会提供通航信息、待闸锚泊、评价咨询等6大类30项信息服务。本文通过对三峡通航e站的现状进行分析,在船方用户层面构建评价指标体系,运用层次分析法对指标进行评估,为促进线上通航服务发展和提高温情服务质量提供参考。
关键词 三峡通航e 层次分析法 评价指标
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Change in Sediment Load of the Yangtze River after Wenchuan Earthquake 被引量:1
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作者 CHENG Genwei HE Xiubin +1 位作者 CHEN Guirong TAO Heping 《Journal of Mountain Science》 SCIE CSCD 2010年第1期100-104,共5页
On May 12, 2008, an earthquake of 8.0 magnitude on the Richter scale and its numerous aftershocks devastatingly hit Wenchuan County and its nearby region along the Longman Mountains in Sichuan Province, China. The hea... On May 12, 2008, an earthquake of 8.0 magnitude on the Richter scale and its numerous aftershocks devastatingly hit Wenchuan County and its nearby region along the Longman Mountains in Sichuan Province, China. The heavy ruined area was up to 30,000km2 and 13% of its land surface was denuded by the extremely terrible quakes. The mountain collapses, landslides and debris flows induced by the earthquake not only scared the landscape at the immense scale, but also poured L66-billion-m3 sediment combined with offscourings and rubble into the Yangtze River and its breaches. This amount of sediments is 3 times more than the normal amount discharged into the Yangtze River, and will significantly increase sediment transportation of rivers and decrease storage capacities of reservoirs downstream. The dramatic increase in sediment load will imperil the engineering safety and impact the operation of the giant Three-Gorge Hydro-power Station if no proper prevention measures are taken. 展开更多
关键词 Wenchuan earthquake sediment load the Yangtze River
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A Study on Additional Electric Energy Accommodation of Three Gorges Hydropower Station 被引量:1
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作者 Chen Zheng Lin Tingwei +2 位作者 Li Ke Xia Kai Wang Xue 《Electricity》 2011年第1期29-33,共5页
Considering the additional electric energy generated after the full operation of the underground hydropower station, the electric energy accommodation of the Three Gorges Project (TGP) is reviewed. It is .focused on... Considering the additional electric energy generated after the full operation of the underground hydropower station, the electric energy accommodation of the Three Gorges Project (TGP) is reviewed. It is .focused on the additional electricity accommodation, based on the research at the earl), stage. The electric energ), accommodation solutions ate recommended as that. based on the cost-benefit analysis of the power distribution area, the additional electric energy of the Three Gorges should be given ptqority to meet the needs at the supply end of Hubei and Chongqing. The results of this research has a reference value on the implementation of the Three Gorges electric power accommodation, after the further optimization of the transmission curves in both wet and dry seasons. 展开更多
关键词 Three Gorges Hydropower Station electric energy accommodation cost-benefit analysis
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两个气象应用项目软件的研制与应用
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作者 左希建 张峻 《湖北气象》 2006年第3期32-34,共3页
介绍了《三峡自动站报表软件》和《气象自记风报表信息化与格检、质检软件》的设计技术和基本功能。其中《三峡自动站报表软件》通过数据库视图技术从三峡水文气象数据库获取基本数据,通过SQL查询技术统计合计,最后通过开发动态链接库,... 介绍了《三峡自动站报表软件》和《气象自记风报表信息化与格检、质检软件》的设计技术和基本功能。其中《三峡自动站报表软件》通过数据库视图技术从三峡水文气象数据库获取基本数据,通过SQL查询技术统计合计,最后通过开发动态链接库,调用Excel模版完成可视化报表;《气象自记风报表信息化与格检、质检软件》通过可视化界面,实现人工录入数据的采集、格检、保存,在此基础上进行对比质检和A模式存储。 展开更多
关键词 三峡自动 气象报表 自记风资料信息化 格检 质检
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Automatic Voltage Regulator Test of Three Gorges Right Bank Hydropower Station 被引量:1
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作者 Wu Tao Zhou Ji +5 位作者 Pu Jun Su Weimin Xie Huan Huo Chengxiang Deng Xiaojun Yao Qian 《Electricity》 2012年第3期24-29,共6页
Based on real-time digital simulations(RTDS),a laboratory environment similar to the real-time operation situation of the Three Gorges Hydropower Station is established.Then,the causes for the power fluctuation of the... Based on real-time digital simulations(RTDS),a laboratory environment similar to the real-time operation situation of the Three Gorges Hydropower Station is established.Then,the causes for the power fluctuation of the second generator by errors in the rotor rotating speed calculation are found,and the tuning method of the speed related parameters are given.The damping and reverse tuning characteristics of power system stabilizers(PSSs)in the digital automatic voltage regulator(AVR)are compared and investigated in the frequency range of 0.18-1.1 Hz.The efficiency of the proposed tuning method for ensuring power system stability is verified by RTDS.Finally,field tests show the validity of the laboratory test results. 展开更多
关键词 power system stabilizers (PSS) angular speed oscillating reactance real-time digital simulation (RTDS)
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The design of Three Gorges Hydropower Station
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作者 Zhou Shuda Xie Hongbing 《Engineering Sciences》 EI 2011年第3期66-73,共8页
Using physical model and numerical simulation techniques, some technical problems were studied systemati- cally, including layout of power station, measures of sediment and floating debris discharging, types of intake... Using physical model and numerical simulation techniques, some technical problems were studied systemati- cally, including layout of power station, measures of sediment and floating debris discharging, types of intake, embed- ded types of spiral ease, layout of underground powerhouse tunnel group and block reinforcement. It was optimal in technique and economy with the arrangement of powerhouse at the dam-toe of both banks + underground powerhouse in the right bank, as well as the intake with a single and small orifice. The sediment and debris problems could be solved with disperse sediment ejection and floating debris discharging holes. With the adoption of techniques for spiral cases such as heat and pressure preservation, cushion layer and combined embedding, the stable operation of generating units can be guaranteed. The arrangement of tailrace tunnel with sloping ceiling was better than that of tailrace surge tank. The technical requirements related to the embedding type of spiral case were proposed. The reinforcement of huge unfavorable blocks was discussed and the new idea for block reinforcement using anti-sliding piles and normal compressive stress of structural plane was put forward. 展开更多
关键词 Three Gorges Power Station layout sediment and floating debris discharging spiral case embedding shallow embedment block reinforcement
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Look Back Transmission Planning Around Three Gorges
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作者 Zhou Xianlin Lin Tingwei 《Electricity》 2011年第2期24-29,共6页
In view of its huge installed capacity and very complex transmission system,the design process of China's Three Gorges Hydropower Station had been repeatedly demonstrated for more than ten years.The smooth constru... In view of its huge installed capacity and very complex transmission system,the design process of China's Three Gorges Hydropower Station had been repeatedly demonstrated for more than ten years.The smooth construction,bringing into production and operation show that the planning scheme for Three Gorges power transmission project is successful.In this paper the design course of Three Gorges power transmission system is retrospected;the main planning schemes for Three Gorges power transmission system are reviewed;and the design results in different design stages are summarized. 展开更多
关键词 Three Gorges Hydropower Station power transmission system energy accommodation
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