The analysis on reservoir sediment deposition and downstream river channel scouring after impoundment and operation of TGP

According to the measured data after impoundment and operation of the Three Gorges Reservoir,the reservoir sediment deposition and downstream river channel scouring are described briefly and compared with the research results achieved in the demonstration stage.It is indicated through analysis that the reservoir sediment deposition and downstream river channel scouring during 8-year impoundment and operation are still within the original forecast,so the original forecasting results are feasible.The further observation and comparison should be conducted because the comparison between the observed data and the original forecast is not so sufficient in time and the prototype observation and related research work should be strengthened in the future.     

Placement of Concrete on Dam by Towerbelt

1Introduction　ThetowerbeltisapieceofspecialequipmentdevelopedbyROTEC ,USA .Itisanorganiccombinationofatowercraneandabeltcrane ,integratingtheverticalandhorizontalconveyanceofconcreteandthecapabilityofpouringdirectlyontheblockintoabodyandpossessingastrongcapacityforplace mentofconcrete .Whenusedincon junctionwiththeconcretefeedingline ,thetowerbelt,whichisthemostad vanceddamconcretepouringequipmentintheworld .canachieveacontinuous,evenandefficientoperationofconcretefromthebatchingplanttothe…     

浅淡TGP206在黄土隧道地质超前预报中的应用

依据黄土的特点,分析了在黄土隧道施工中歇产生的地质灾害,针对黄土隧道中的地质灾害,提出利用TGP206对黄土隧道进行地质预报。重点介绍了含沙量大的黄土隧道及含水量大的黄土隧道的超前地质预报。     

The research and demonstration of some major geological problems of Three Gorges Project

Abstract：The research process, main contents, methods and conclusions for some major engineering geological problems of the Three Gorges Project (TGP) are reviewed and introduced, including dam site selection, regional tectonic stability and seismic activity, stability of reservoir bank and reservoir-induced earthquake. Meanwhile, the above mentioned engineering geological problems are evaluated according to the preliminary test results since TGP operation and impoundment in 2003.     

TGP206地质超前预报仪应用简析

介绍了TGP206地质超前预报系统的工作原理、解译技术及其在瓦窑坡隧道施工地质超前预报中的应用。通过隧道施工开挖结果验证了预报结果的准确性,展示了TGP206探测系统在隧道施工地质超前的成功预报,减少隧道施工风险,缩短施工工期,更好地指导施工。     

三峡水电站左岸厂房10^#机组充水保压蜗壳监测成果分析

本文通过对三峡工程左岸电站10^#机组蜗壳保压浇筑的全过程监测,分析了机组蜗壳在施工期加压、保压以及卸压过程中的钢板、混凝土和钢筋的应力状况和钢板与混凝土结合缝的开度状况,得出机组蜗壳在整个加压和卸压的浇筑过程中工作性态正常,应力和变形均在设计允许范围内。     

三峡库水升降条件下大石板滑坡变形及稳定性预测

三峡水库修建蓄水后,大量的古滑坡复活,并形成了一些新滑坡。大量的调查研究和工程实例表明滑坡前缘库水升降是致使水库滑坡形成和变形的重要诱发因素。以三峡库区大石板滑坡为例,使用FLAC3D软件建立不同蓄水阶段时滑坡的变形和稳定性状况,得到大石板滑坡变形发展趋势与库水升降之间的相关规律。研究表明,大石板滑坡稳定性良好,但蓄水状态下变形及稳定性状况较天然状态明显恶化,尤其是库水下降后滑坡的变形最大,稳定性也最差。     

Some Rock and Soil Mechanical Issues in TGP Construction

1OverviewoftheTGP[1 - 3]　TheThreeGorgesProjectisakeybackboneprojectindevelopmentandharnessingoftheYangtzeriver,withhugecomprehensivebenefitssuchasfloodcontrol,powergenerationandnavigationimprovement.Theprojectconsistsofthedam ,powerplantsandnavigationstructures .Thedamisofaconcretegravitytypewithamax .heightof 181m .Thepowerplantis ,ofadam behindtype ,installedwith 2 6setsofturbinegeneratingunits,70 0MWeach ,182 0 0MWintotal,whichgenerateanelectricityof 84 7TW·hannually .Thenavigation…     

The construction management system and practice of Three Gorges Project

Three Gorges Project (TGP),the largest water resources and hydropower project in the world with huge scale and complex techniques,has great comprehensive benefits mainly in flood control,power generation and navigation improvement.Through 17-year construction and practice,the project has been successfully completed.Some valuable experience from the successful construction of TGP has been gained for the management system and mechanism of hydropower project construction in China.Its construction management mode produces important influences on the management system of domestic capital construction.With combination of the construction management practice of TGP,the characteristics of management system and mechanism are summarized,and the suggestions on current hydropower development system and construction management mode are put forward.     

基于生态足迹模型的重庆三峡库区可持续发展性分析

将生态足迹模型应用于重庆三峡库区8个重点移民区县,通过计算分析其生态足迹、生态承载力、生态盈余与万元GDP足迹来分析其可持续发展性.结果表明:8个重点移民库区县的生态足迹都远远高于其生态承载力.各项生态足迹指标中只有林地出现盈余,其余各项指标都出现不同程度的赤字,特别是耕地与草地生态赤字尤为严重.基于以上分析,结合重庆三峡库区的自然、经济以及社会背景提出相应的减少其生态赤字的建议与措施.