“十四五”广西水安全保障规划思路

在全面总结评估广西水利"十三五"规划及实施情况的基础上,分析新时期广西水利发展存在的主要矛盾和问题。根据"十四五"规划和2035年远景目标建议以及"纲要"对水利工作的要求,研究提出"十四五"时期广西水安全保障规划的目标任务和总体布局思路。     

聚力谋广西发展 实干促水利跨越

<正>2013年,广西水利系统深入贯彻落实中央和自治区有关水利工作重大决策部署,坚持把保持水利投资增长作为重中之重,把创新水利体制机制作为根本动力,全力推进水利建设,不断深化水利改革,全面加强水利管理,水利改革发展各项工作取得了显著成效,为广西经济社会发展提供了强有力支撑。以"安全水利"为本,狠抓防汛抗旱工作。面对广西局部地区的春旱和夏旱以及14次洪涝灾害,坚持把保障人     

加快广西水利风景区发展的思考

论述了广西水利风景区发展的现状,分析了其存在的问题;提出加快广西水利风景区发展的对策及措施,指导推进水利风景区建设和管理工作,全面提升水利风景区可持续发展的潜力。     

广西水利风景区体育旅游研究

在分析广西水利风景区开发现状、体育旅游特点和竞争力的基础上,进一步对广西水利风景区体育旅游发展进行了SWOT（优势、劣势、机遇、挑战）分析。提出了促进广西水利风景区开发体育旅游的对策,以期指导和全面推动广西水利风景区的体育旅游建设发展。     

再创广西水利建设的新辉煌

回顾5年来广西水利工作取得的成绩,指出今后广西水利工作要以党的十六大精神为指导思想,结合实际,围绕服务全面建设小康社会的目标,按照新的治水思路,突出重点,加快推进水利发展与改革,并就今后广西水利工作进行了具体部署。     

加大培训力度提供人才保障

广西水利厅依据广西水利系统人才的现状和水利事业发展的要求,积极开展水利职工的教育培训工作。坚持以邓小平理论和"三个代表"重要思想为指导,紧紧围绕广西水利建设发展目标,认真实施《全区水利系统整体性人才开发实施方案》,坚持规模、质量、结构和效益协调发展的方针,走以内涵发展为主的道路,战略上精心部署,具体工作步步落实,取得了显著的成绩。     

加快广西水利改革与发展的调研报告

水利是国民经济的基础设施和基础产业,为经济社会的可持续发展提供重要的支撑、保障和服务。在全国和广西都进入新一轮加快发展的新形势下,抓住机遇,学习借鉴外省先进经验,深化广西水利改革,加快广西水利发展,是一项十分重要而紧迫的任务。为此,自治区党委政策研究室与自治区水利厅组成联合课题组,对加快广西水利改革与发展问题进行了深入的调查研究。我们认为,广西的水利改革与发展正面临一个难得的机遇,应采取有力的政策措施,支持其加快改革步伐,促进水利事业的大发展,以支撑和保障富民兴桂新跨越、全面建设小康社会目标的实现。     

真抓实干谋发展 凝心聚力促跨越

<正>2014年,广西水利系统全面深入贯彻落实中央和自治区治水兴水的重大决策部署,科学谋划、精心组织、狠抓落实,全年共完成水利水电固定资产投资138.7亿元,超额完成了年度目标任务,水利改革发展各项工作取得了显著成效,为广西经济社会加快发展提供了有力支撑。一是夺取了防汛工作全面胜利。成功抵御9次强降雨和2次强台风袭击,特别是在应对新中国成立以来登陆强度最大、滞留时间最长、影响范围最广的第9号超强台风"威马逊"过程中,首次启动Ⅰ级应急响应,全面动员,超前     

春风化雨润壮乡 治水强桂铸辉煌

<正>"十二五"时期,是广西水利投入最大、人民群众受益最多、行业能力提升最快的五年。各级党委、政府高度重视水利工作,自治区主要领导多次对水利工作作出重要批示,并深入调研指导工作,为广西水利科学发展、跨越发展提供了组织保障。全自治区水利系统以新时期水利工作方针为指导,积极落实中央和水利部各项决策部署,全面完成了"十二五"规划确定的主要目标和任务。一、"十二五"回顾2011年中央1号文件出台后,广西把水利工作摆在更加突出的位置,自治区党委、政府发布了《关于实现水利改     

广西水利综合经营成绩显著

广西水利综合经营成绩显著刘镭（广西水利电力厅）广西水利综合经营起步于８０年代，由于各级水利部门贯彻了“转轨变型，全面服务”，“一业为主，综合发展”的方针，以及在改革开放大好形势下，水利作为基础产业，逐步进入市场经济轨道，对水利综合经济是水利行业一大支...     

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。     

Serial discontinuities in a Rocky mountain river. I. Distribution and abundance of plecoptera

Samples were taken year-round at eleven sites along the altitudinal profile (2900-1400 m a.s.l.) of the Gunnison River, a 329 km tributary of the Colorado River, to document the distribution of the Plecoptera and to evaluate responses to hypolimnial-release dams in the headwaters and middle reaches. Twenty-two species were present, with the greatest species richness occurring in an unregulated segment upstream of the middle reach dams; average nymphal biomass over the study period (175 organisms, 395 mg dry mass m^?2) was also greatest in this segment. Only four species (58 organisms, 48 mg m^?2) were present in the tailwaters of the headwater dam and values were greatly reduced (nine species; 35 organisms, 180 mg m^?2) below the middle reach dams. The stonefly community recovered ca. 80 km downstream from the last dam (15 species; 244 organisms, 250 mg m^?2), apparently in response to natural resetting of environmental conditions corresponding to those above the middle reach dams. At the most downstream site (11) only four species (four organisms, 16 mg m^?2) were present. The observed distributional pattern is a classic serial discontinuity in response to hypolimnial stream regulation in a temperate latitude river.     

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。     

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.     

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。