新农村建设与水利发展关系探讨

以新农村建设和水利发展的关系为主线,着重论述了在新农村建设的发展历程中,水利事业在防洪减灾以及确保粮食丰产等方面与新农村建设的关系,并依据新农村建设的“二十字蓝图”,从两个方面探讨了新形势下新农村建设与水利发展的关系。一方面新农村建设离不开水利的发展,水利建设不仅是新农村建设的一个重要组成部分,而且成为新农村建设的强大支撑和保障,另一方面,又对水利工作提出了新的要求,为水利今后的发展指明了方向。本文在最后指出了今后水利工作的重点,旨在使其更加适应新形势的农村建设,为新农村的发展注入新的活力。     

新时代优化水利工程建设程序构想

水利工程建设程序既应客观反映建设工作时序,也应突出建设工作重点和要点.在新时代,优化水利工程建设程序,对促进水利事业高质量发展将产生重要影响.分析了水利工程建设程序发展历程,讨论了市场经济环境下水利工程建设特点,并对20世纪90年代水利部颁布并经修正的水利工程建设程序管理规定的不适应性作了分析.根据新时代经济社会发展特...     

水利网站群信息资源建设研究

随着电子政务建设进入以深化应用为显著特征的发展阶段,以及水利系统网站建设工作的不断深入,水利网站信息资源建设将面临更高的发展要求.文中探讨了水利网站群建设的重要性,分析了信息资源建设存在的问题,提出了推进信息资源建设的建议.     

浙江省农村水电建设实践与发展研究

分析、研究了浙江省农村水电“九五”、“十五”股份制投资开发建设农村水电,“资源、生态、经济,,三大补偿制度的建立和发展,以及各时期水电建设的工程技术特点;论述了“十一五”浙江水电的发展思路及建设方向。阐述了制度建设与水电技术发展相互制约、相互促进的辩证关系,认为制度建设是农村水电建设发展的基础和助推器。     

江苏省水网规划建设实践与发展思考

建设水网工程是新发展格局下落实新发展理念,构建水利综合治理新体系的重要途径.文章总结了江苏省水网的规划建设历程,阐述了其总体格局、规模和作用,分析了其治理特点和面临的问题,探讨了水网发展格局与重点建设内容,提出了相关思路与建议,为水网工程规划建设提供参考.     

驷马山灌区泵站信息化建设成效与体会

近年来,中央提出加快推进节水供水重大水利工程建设,明确今明年和"十三五"期间分步建设纳入规划的172项重大水利工程,为大中型灌区建设发展带来重大的发展机遇,灌区信息化建设是灌区建设发展现代化的基础和重要标志。2008年以来,笔者所在驷马山灌区开展了全国大型泵站更新改造工程,实施了较系统、全面的灌区骨干泵站信息化建设,提高了灌区管理效率,降低灌区管理成本,提升了灌区管理现代化水平。     

企业文化建设是推动企业经济稳定发展的途径

湖南芷江春阳滩水电有限公司认真落实科学发展观,以经济为中心,创先争优与文化建设相结合,把企业文化作为全面发展企业经济建设的有效载体,大力开展企业文化活动。有效地提高了企业员工素质,促进了经济建设、政治建设、文化建设、社会建设同步发展。     

试论我国水利工程建设技术标准化

综述了我国水利工程建设技术标准化的发展历程及特征,总结了现行水利工程建设技术标准存在的问题与不足,并根据水利改革发展的新形势以及WTO/TBT协定要求,对我国新时期水利工程建设技术标准化的建设提出了建议和展望。     

推进水生态文明建设 实现中原永续发展

<正>党的十八大把生态文明建设放在突出地位,强调要把生态文明建设融入经济建设、政治建设、文化建设、社会建设各方面和全过程,努力建设美丽中国,实现中华民族永续发展。这一铿锵有力的生态文明宣言,描绘出了一幅令人憧憬的"中国梦",必将对未来中国发展产生重大的影响。党的十八大报告多处涉及水利工作,并把水利放在生态文明建设的突出位置,不仅进一步完善了新时期治水方略,深化了水利工作内涵,拓展了水利发展空间,更对水利事业的改革发展提出了新的更高要求。水是生命之源、生产之要、生态之基。水生态文明是生态文明建设的资源基础、重要载体和显著标志,对于强化生     

水利工程建设管理现状与对策分析

随着经济建设的发展,国家对于水利工程的重视程度也在不断提高,进入了前所未有的发展阶段。近年来,水利工程发展的速度比较快,但是有很多的项目中存在着建设管理方面的问题,影响了水利工程的质量,同时也给人们的生产、生活带来了不便,并在一定程度上严重阻碍了水利工程建设效果的充分发挥。文章从水利工程建设管理入手,介绍了中国水利工程建设管理的现状,并根据现状提出加强水利工程项目建设管理的对策。     

地下厂房施工过程的三维非线性数值模拟分析

根据冗各电站地下厂房开挖支护的施工顺序,以隐式杆单元模拟锚杆,以壳单元模拟混凝土喷层,采用三维非线性有限元技术,对洞室群的开挖支护动态过程进行了模拟计算。通过三维非线性有限元计算分析得到:洞室群动态开挖过程中围岩应力变形的分布规律,围岩塑性区的发展规律,锚杆受力变化情况。计算结果表明:整个开挖过程中,洞周围岩位移变化规律正常,量值较小,塑性区主要分布在洞室周边,围岩稳定性较好;但在洞室交叉口处围岩的变形较大,出现较大范围的塑性区,在此基础上提出了支护措施优化方案,并对优化方案的效果进行了评价。     

Evaluation of freshwater mussel relocation as a conservation and management strategy

The relocation of unionacean mussels is commonly used as a conservation and management tool in large rivers and streams. Relocation has been used to recolonize areas where mussel populations have been eliminated by prior pollution events, to remove mussels from construction zones and to re-establish populations of endangered species. More recently, relocation has been used to protect native freshwater mussels from colonization by the exotic zebra mussel Dreissena polymorpha. We conducted a literature review of mussel relocations and evaluated their relative success as a conservation and management strategy. We found that 43% of all relocations were conducted because of construction projects that were forced to comply with the Endangered Species Act 1973 and that only 16% were monitored for five or more consecutive years. Most (43%) relocation projects were conducted from July to September, presumably a period when reproductive stress is relatively low for most species and the metabolic rate is sufficient for reburrowing in the substrate. The mortality of relocated mussels was unreported in 27% of projects; reported mortality varied widely among projects and species and was difficult to assess. The mean mortality of relocated mussels was 49% based on an average recovery rate of 43%. There is little guidance on the methods for relocation or for monitoring the subsequent long-term status of relocated mussels. Based on this evaluation, research is needed to develop criteria for selecting a suitable relocation site and to establish appropriate methods and guidelines for conducting relocation projects.     

基于模型试验的河床砂砾石层基本特性研究

为了经济可靠地确定深厚覆盖层的基本特性参数,以大渡河双江口水电站坝基河床砂砾石层基本特性研究为工程背景,进行大尺寸模型试验,研究河床砂砾石层的旁压模量和动探击数随密度、级配以及上覆压力的变化规律。根据室内模型试验结果,结合现场旁压试验及钻孔试验成果,推断出坝址区河床砂砾石相关层位的密度,并依此进行砂砾石室内力学试验,获得设计所需力学参数。研究成果可为深厚覆盖层基本特性测试提供新的方法。     

基于BP神经网络-马尔科夫链模型的隧道围岩位移预测

在隧道工程施工中,围岩位移预测起着很重要的作用。将BP神经网络-马尔科夫链模型引入到隧道围岩位移预测中来,通过对训练样本的学习,利用BP神经网络实现了对位移时间序列的滚动预测,同时得到了实测值与预测值的相对误差;在此基础上利用马尔科夫链对相对误差进行修正,有效地提高了预测结果的精度。并将该模型应用于某公路隧道拱顶下沉位移时序预测中,结果表明该模型具有精度高、科学可靠的特点,为隧道围岩变形的预测提供了新的途径。     

Short communication. Pipelines as a refuge for freshwater snails

In the lower River Murray, Australia, populations of gastropods have declined markedly over the past 40 years. Of the native fauna of about 18 species, only the ancylid Ferrissia petterdi remains common (but in patches), and another five species feature in sporadic local resurgences. Until recently the viviparid Notopala was thought to be extinct. The introduced physid Physa acuta is widespread, but in low numbers. The decline probably is associated with flow regulation, high turbidity and the introduction of common carp. Snail populations have persisted, however, in irrigation pipelines fed from the river, where they periodically cause blockages. This paper reports the discovery of the only known populaion of Notopala hanleyi in a pipeline where the inner wall accumulates microbial and other organic matter, providing high quality food for snails. In the Murray before regulation most of the periphytic biomass was probably microbial, as fluctuating water levels would have maintained littoral communities in a highly productive, early state of succession his postulated that, by stabilizing seasonal water levels, regulation has promoted the production of filamentous green algae, an inferior food source, and so displaced snail populations from the open aquatic environment.     

浙江省水域调查录入系统的设计和应用

浙江省水域调查录入系统将调查数据与电子地图相整合,对分类水域数据进行统计计算,并对输入数据进行合理性和完整性检查,得到调查范围内现有水域的详细数据,实现了水域调查数据输入、计算、统计和查询的数字化管理,提高了工作效率和工作质量,为各地下阶段水域保护规划编制和水域管理工作提供了数据支持。对该系统的设计原则、功能和技术设计等作了介绍。     

基于CT-连续加荷水泥乳化沥青混凝土细观损伤规律研究

利用CT技术对水泥乳化沥青混凝土的细观损伤过程进行实时扫描观测,获得了混凝土试件在连续加荷下的CT图像。通过采用直观分析法、CT数分析法、CT数与损伤变量关系3种方法分析表明,水泥乳化沥青混凝土的破坏过程可分为压密、扩容、裂纹扩展、破坏4个阶段,同时混凝土在受压过程中具有韧性,在极限荷载之前各断面处于压密和微扩容的强化阶段,极限荷载之后混凝土从损伤到破坏发展比较平稳。     

Automated system for removal and pneumatic transport of fly ash from electric precipitator hoppers

A system for removal and pneumatic transport of fly ash is examined, in which air pulses act on batches (pistons) of ash formed in a duct. Studies are made of the effect of several physical parameters on the force required to displace a piston of ash and these serve as a basis for choosing a system for removal and pneumatic transport of ash simultaneously from several hoppers of an electric precipitator. This makes it possible to separate the ash particles according to size without introducing additional components. Formulas are given for calculating the structural and dynamic parameters of this system and measurements of indirect dynamic parameters are used to calculate the input-output characteristics of the system. In order to optimize the system, configurations for summing several ducts into a single transport duct for pneumatic ash transport are proposed. Some variants of dry ash utilization and the advantages of producing of size-separated particles are considered. __________ Translated from élektricheskie Stantsii, No. 2, pp. 26–30 (2008).     

The flood pulse advantage and the restoration of river-floodplain systems

The ‘flood pulse advantage’ is the amount by which fish yield per unit mean water area is increased by a natural, predictable flood pulse. Evidence for this increase is presented from tropical and temperate fisheries. It is argued that increasing multispecies fish yield by restoring the natural hydrological regime is consistent with increasing production of other trophic levels and with restoration from ecological and aesthetic viewpoints. When applied to a river-floodplain system, this restoration would provide a large, self-sustaining potential for recreation, commercial exploitation, and flood control. An interim ‘natural flood pulse’ restoration approach is proposed for systems modified for navigation. This approach approximates the natural hydrological regime in a river reach and is intended as a first step in the long process of restoring the watershed.     

浅谈天湖水电站水轮机运行故障及处理措施

简述天湖水电站投运以来各种故障的表现形式，分析其原因，提出了相应的处理方法及措施，并对合理利用国内外设备提出建议。