Flood control management system for reservoirs

Flood disaster is one of the most damaging natural disasters in China, with annual average losses more than 200 billion yuan in recent years. After 1995 floods in the Liaohe River and 1998 floods in the Yangtze River, the governments from national to local have realized that the flood control operation of reservoirs can play a major role in alleviating flood losses but there are some problems in flood control management for reservoirs. Most of the existing flood control management systems for reservoir were established for special purposes and are lack of data share and communication with governments, it is very difficult for decision-making departments to get real-time information in short time. Thus, a national programming about flood control management system for reservoirs is presented. The paper is a summary of the outcome of national programming about the flood control management system for reservoirs in China. The background, objectives, main challenges and main contents of the programming are introduced. The main focus is on the issues of the software integration flood control management system for reservoirs. Emphasis is concentrated on the flowchart design of the system and its core components. The current system can be applied to a river control center or a single reservoir because of using the national standard databases and easily integrated into the national flood control system in the future. An application system is briefly introduced in order to understand the system.     

HE县三次产业的知识经济成分统计分析

本利用因子分析对H县1993－1997年的三次产业的知识经济成分进行主成分分析。结果表明,H县第一产业中粮食、蚕茧对经济影响比较大;第二次产业中新材料、机械、电子对经济影响相对较大;第三产业中教育化电影电视、邮电、农林牧副渔服务对经济的影响相对较大。     

Procedural Synthesis using Vortex Particle Method for Fluid Simulation

We propose a fast and effective technique to improve sub‐grid visual details of the grid based fluid simulation. Our method procedurally synthesizes the flow fields coming from the incompressible Navier‐Stokes solver and the vorticity fields generated by vortex particle method for sub‐grid turbulence. We are able to efficiently animate smoke which is highly turbulent and swirling with small scale details. Since this technique does not solve the linear system in high‐resolution grids, it can perform fluid simulation more rapidly. We can easily estimate the influence of turbulent and swirling effect to the fluid flow.     

深圳水库排洪河综合整治工程设计

以深圳水库排洪河水环境综合整治工程为例,探讨在城市河道综合整治设计中如何体现人与大自然和谐相处的理念,尊重大自然,满足河道防洪安全,恢复河流活跃、多样的生态系统,美化周边环境,创造多样性功能的河流空间。     

论泾河东庄水库灰岩坝址渗漏问题

通过对泾河东庄水库灰岩坝址工程地质钻探成果特别是钻孔压水试验及水文地质成果包括区域水质、水位、水温等不连通性的分析研究,并结合流量测定三维渗漏数值模拟分析,对坝区渗漏问题进行分析和论证,进一步证明在泾河下游东庄灰岩段建坝是可行的,不会发生严重渗漏,为项目的设计、审查、决策方面参考,以促进工程前期工作的进展。     

三峡船闸下游引航道防渗工程施工质量监理

华东勘测设计研究院监理中心在三峡工程通航建筑物下游引航道防渗工程施工阶段狠抓质量监理。监理工程师在开工申请，试验，工序控制，质量缺陷处理和竣工验收等方面严格起来，总结了一套理工程师在现场管理模式。     

两参数标准马氏过程初始条件概率 P_(z,x) 的性质

定义了两参数标准马氏过程．由此引入了两参数标准马氏过程于“初始时间ｚ”自ｘ出发的条件下,属于将来的事件Ａ（即Ｆｚ中集Ａ）的概率Ｐｚ,ｘ（Ａ）的概念,讨论了两参数标准马氏过程关于Ｐｚ,ｘ的马氏性,Ｅｚ,ｘ的可测性及表示等．     

关于充分发挥三峡工程发电效益防止重复建设的建议

文章简要分析了三峡电站投产前后华中、华东、川渝电网的电力、电量增长及发电装机容量情况,指出为充分发挥三峡工程发电效益必须注意防止重复建议。为此建议：（１）将三峡电站的电力、电量及早分配到各省、市电网,优先列入电力平衡,防止重复建设;（２）供需各方尽早签订集电合同、电价合同;（３）合理确定电价,上网电价要略低于同期电网新增水电、炎电的上网电价水平;（４）做好电力规划、防止重复建设。     

三维大气电波折射修正实验研究

外测系统电波折射修正常用的球面分层法和水平分层法都没有考虑到大气水平不均匀性的影响因此其修正精度不是太高。而三维大气法不仅考虑了大气在垂直方向上的变化，而且也考虑了在水平方向上的变化，所以其修正精度较高。