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汾河中游防洪决策支持系统是以管理科学、运筹学、控制论和行为科学为基础,以计算机、仿真技术和信息技术为手段,是辅助管理决策人员在防洪决策活动中,具有智能作用的人一机网络系统。系统由图文信息系统、历史暴雨洪水、雨情水情测报、洪水预报调度、人工演绎系统、智能辅助系统、数据管理系统、操作使用说明等8个部分组成。汾河防洪专家系统是该系统的智能分析部分。本文着重阐述了汾河防洪专家系统的设计思想和实现途径、建立防洪专家知识库的步骤和技巧,以及系统的运行和扩展。 相似文献
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针对淮河中游防洪调度决策的实例,用最高低水位经分段折算,作了语义量化;根据方法库模拟结果来判断某种状态的语义可信度,由半正态分布隶属函数来确定;对各种 状的语义可信度间的转换,采用了模糊聚类的方法。 相似文献
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Ma Shengzhong 《吉林大学学报(地球科学版)》1989,(1)
本文将建造专家系统分成知识转移和知识转变两个过程。提出知识模型、知识模型域、知识模型边界条件、知识库结构等新概念。认为,建好知识模型,是知识获取、建立知识库、建造专家系统的前提、依据、基础。 相似文献
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淮河中游防洪标准为百年一遇,当遭遇超标准洪水,依据洪水调度方案,颍右片防洪保护区可能遭遇溃口洪水风险。基于MIKE构建淮河干流与7条主要入河支流一维模型、研究区和行蓄洪区二维模型,将溃口口门概化为宽顶堰,溃口处采用标准连接和一维模型耦合计算。超标准洪水采用1954年型洪水同频率放大,选用2003年和2007年洪水率定和验证参数。模拟结果显示:新李扒口后洪水沿着八里河等低洼区域向上游演进,300年一遇和1000年一遇最大淹没面积分别为810km~2、911km~2,平均最大淹没水深分别为2.42m、2.70m。模型计算结果符合区域地形地貌等,可为区域防洪规划编制、应急预案制定、洪水风险决策等提供参考。 相似文献
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淮河流域产生暴雨的天气系统主要是由涡切变和台风等五种天气类型造成的,淮河洪水主要发生在7月份.中游22个行蓄洪区在防洪中起到至关重要作用,洪水预报必须与行蓄洪区运用紧密结合,本文根据笔者多年的实践经验,提出宏观预测、中观对策、微观决策的预报调度思路及处理行蓄洪区的预报方法. 相似文献
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陈墨香 《水文地质工程地质》1957,(4)
水利部治准委员会决定在淮河中游利用准河两岸的湖泊及洼地修建蓄洪量为200—300亿立方公尺的大型湖泊水库,其目的除了根治淮河水患,减轻下游洪水的负担给下游防洪规划创造有利条件外,在兴利方面则是利用水库容水的一部分来作灌溉。为此治淮委员会勘测设计院于1953年开始在淮河中游左岸地区进行了潜水动态(仅观测水位)的观测工作,同时也积累了一些资料。1955年夏季淮委水文地质队会同南京大学水文地质专业师生共同完成了中游左岸12100平方公里的水文地质测绘工作,所获得的资料对以后在该区发展灌溉事业提供了初步的资料。并对进一步 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozach Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.) 相似文献
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正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology, 相似文献
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正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.) 相似文献
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正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se- 相似文献
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正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with 相似文献
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正20141609 Chen Guiying(College of Earth Sciences,Guilin University of Technology,Guilin 541004,China);Han Nairen New Materials of Stylophora from the Upper Cambrian of the Jingxi Area,Guangxi,South China(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188Q,52(3),2013,p.288-293,2 illus.,12 refs.)Key words:Stylophora,Guangxi 相似文献
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正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract) 相似文献