卡拉水电站田三滑坡体失稳机理及涌浪计算     

谭跃虎  权威  李二兵  何世海  徐辉 《地震学刊》2011,(3):288-293

结合雅砻江卡拉水电站田三滑坡体工程地质条件,对滑坡变形及涌浪的影响进行深入分析。在总结国内外滑坡涌浪预警实践经验的基础上,研究滑坡运动的过程,对比分析了速度大小、涌浪过程的变化规律。研究表明,在滑坡涌浪的入水初速度及库水深度一定的前提下,田三滑坡体具有初始涌浪高、爬坡高的特点,特别是在库水水位下降时,更要加强监测和预报。针对坝址比选,建议该水电站采用下坝址方案,且坝体设计需要考虑抗涌浪冲击;须结合工程特点,做好工程配套设施建设的选址工作。  相似文献   

水电水利工程地质灾害问题分类     

王自高  何伟 《地质灾害与环境保护》2011,22(4):35-40

水电水利工程是一项系统工程,涉及地质灾害问题较多.为加强防灾减灾研究,结合常规地质灾害分类及水电水利工程特点,对水电水利工程地质灾害进行系统的分类和描述.成因不同,可分为工程建设、自然因素及其共同引发的地质灾害;工程特点及成灾对象不同,可分为水库工程、边坡工程、地基工程、地下工程和移民工程地质灾害.  相似文献   

金沙江其宗水电站水平孔钻进技术          下载免费PDF全文

王光明  熊德全 《探矿工程》2011,38(4):49-52

其宗水电站属峡谷区修建的高坝水库。ZK119水平孔设计孔深350 m,位于上坝址左岸地下厂房。水平孔与垂直孔相比,施工技术难度大,安全隐患大,对钻杆、设备要求更高。水平孔施工重点是水平成孔,因此,控制孔斜率是关键。以ZK119水平孔为例,从水平孔施工技术原理、技术特点和防斜措施等方面论述水平孔钻进技术,旨在为更深水平孔施工提供借鉴。  相似文献   

金沙江乌东德水电站暴雨概念模型与云型特征     

王将  段玮  康道俊  孙俊奎  马志敏  邹阳 《中低纬山地气象》2020,44(5)

利用自动气象观测站降水资料、常规地面与高空观测资料及卫星云图资料,对2012—2017年6—10月金沙江乌东德水电站坝区18次暴雨个例的大尺度环流背景及卫星云图演变特征进行统计分析,结果表明,切变冷锋型、两高辐合型、西南涡型、孟加拉湾风暴型、切变线型和高空槽型是金沙江乌东德水电站坝区的六类暴雨概念模型。总结归纳出对应的六类典型云型：切变线云带前界处的对流云团8次(占44.4%)、两高辐合云区内部的对流云团4次(占22.2%)、西南涡西南或东南象限的对流云团2次(占11.1%)、孟加拉湾风暴涡旋云系中分离出来的对流云团或对流云系2次(占11.1%)、切变线云带内部的对流云团1次(占5.6%)、高空槽前盾状卷云区南端的对流云系1次(占5.6%)。  相似文献   

水电项目对越南硒圣河地区社会经济发展及环境保护的影响     

乐庭青  武四兰 《资源与生态学报(英文版)》2011,(4):375-379

硒圣河是湄公河的主要分支之一,其集水区地形条件和水资源量均对水电开发十分有利。此外,无论从物种多样性还是生物量来看,硒圣河水生生物资源非常丰富。鱼类是当地人们的重要食物来源,粗略估计鱼类物种数量可能在200-300种之间,目前具有详细记录的鱼类大约为120种。截至目前,从越南境内硒圣河上游至越-柬边界总共开发了6个水电项目,兴建了一座4A级硒圣调蓄水库。流经柬埔寨的硒圣河部分,依据发展规划将兴建3座水电站,即硒圣5号电站（硒圣1号电站以下）、硒圣3号电站、硒圣2号电站。硒圣河水电项目对区域（越南和柬埔寨）社会经济的影响体现在：为地处偏远和困难的集水区创造了新的能源资源,改善了交通系统和农村地区的生活条件。与此同时,这些水电项目也对该区域自然环境产生了重大影响。例如,改变了下游流动机理变化,导致下游河道淤积,对沿河生态系统也产生了一定影响。  相似文献   

BOOK REVIEWS     

《The Professional geographer》1987,39(3):363-386

Book Reviewed in this article: Hillslope Processes. Binghamton Symposia in Geomorphology International Series: 16. Athol D. Abrahams , ed. The Atlas of Central America and the Caribbean. The Diagram Group . The Cultural Atlas of Islam. Isma'il R. al Faruqi and Lois Lamaya'al Faruqi . Atlas of Israel Contemporary Africa: Development, Culture and the State. Morag Bell . Fundamentals of Physical Geography. David Briggs and Peter Smithson . The Bicentennial Census: New Directions for Methodology in 1990. Constance F. Citro and Michael L. Cohen , eds . World Patterns of Modern Urban Change: Essays in Honor of Chauncy D. Harris. Michael P. Conzen , ed . New Directions for Agriculture and Agricultural Research: Neglected Dimensions and Emerging Alternatives. Kenneth A. Dahlberg , ed . Water Resources Atlas of Florida. E.A. Fernald and D.J. Patton , eds . Landscape Ecology. R.T.T. Forman and M. Godron . The Myth of the North American City: Continentalism Challenged. Michael Goldberg and John Mercer . The Permafrost Environment. Stuart A. Harris . Climate and Circulation of the Tropics. Stefan Hastenrath . The Island of South Georgia. Robert Headland . The Making of Urban Europe, 1000-1950. Paul M. Hohenberg and Lynn Hollen Lees . Bombay in Transition: The Growth and Social Ecology of a Colonial City, 1889–1980. Meera Kosambi . Plant Closings; Public or Private Choices? Richard B. McKenzie , ed . Malaysia: Tradition, Modernity and Islam. R.S. Milne and Diane K. Mauzy . Technology on the Frontier: Mining in Old Ontario. Dianne Newell . The Maritime Political Boundaries of the World. J.R.V. Prescott . Tall Office Buildings in the United States. James W. Pygman and Richard Kateley (Real Estate Research Corporation). Technology, Regions, and Policy. John Rees , ed . The United States and the Regional Organization of Asia and the Pacific: 1965-1985. W.W. Rostow . Renewable Energy: Progress, Prospects. Stephen W. Sawyer Wisconsin Foundations. Gwen Schultz . Dwelling, Place and Environment: Towards a Phenomenology of Person and World. David Seamon and Robert Mugerauer , eds . Power and Place: Canadian Urban Development in the North American Context. Gilbert A. Stelter and Alan F.J. Artibise , eds . Small Firms in Regional Economic Development: Britain, Ireland and the United States. D. J. Storey , ed . Mathematical Methods in Human Geography and Planning. A. G. Wilson and R. J. Bennett . El Niño North: Niño Effects on the Eastern Subarctic Pacific Ocean. W. S. Wooster and D. L. Fluharty , eds . The Soviet Iron and Steel Industry. Craig ZumBrunnen and Jeffrey Osleeb .  相似文献   

Stability analysis on Jinjia dam hydropower project in Chongqing City     

Fuzhi XIE Hong FENG Xiaohan YANG Jingzong YU 《东北亚地学研究》2006,9(2):246-248

The stability analysis is one of the chief problems at hydropower stations.The Jinjia Hydropower Station is a significant project in Southwest China.The paper adopts the rigidity limited equilibrium theory and evaluated stability of the slope body,which will provide the evidences for further detail design.  相似文献   

地面3维激光技术在水土保持监测中的应用     

刘向东  周杰 《测绘与空间地理信息》2013,(10):146-147,150

在水电站建设工程中,需要对水土保持进行监测,本文提出了一种新的侵蚀沟监测方案,实践证明它比传统的监测结果更准确,更真实,可以很直观地反映出侵蚀沟的形态,实现3维建模。同时,在安全方面真正实现了非接触式测量,大大减少了外业工作量,降低了外业危险性。  相似文献   

Hydrological regime of remote catchments with extreme gradients under accelerated change: the Baker basin in Patagonia     

Alejandro Dussaillant J.  Wouter Buytaert  Claudio Meier  Fabián Espinoza 《水文科学杂志》2013,58(8):1530-1542

Abstract

The Baker basin (27 000 km²) is located in one of the most pristine and remote areas of the planet. Its hydrological regime is poised to undergo dramatic changes in the near future due to hydropower development and climate change. The basin contains the second-largest lake in South America, and part of a major icefield. This study documents the natural baseline of the Baker River basin, discusses the main hydrological modes and analyses the potential for sustainable management. Annual precipitation varies several-fold from the eastern Patagonian steppes to the North Patagonian Icefield. The westernmost sub-basins are strongly governed by glacier melt with a peak discharge in the austral summer (January–March). The easternmost sub-basins have a much more seasonal response governed by quicker snowmelt in spring (November–December), while they exhibit low flows typical for semi-arid regions during summer and autumn. Topography, vegetation and wetlands may also influence streamflow. The strong spatio-temporal gradients and variability highlight the need for further monitoring, particularly in the headwaters, especially given the severe changes these basins are expected to undergo. The great diversity of hydrological controls and climate change pose significant challenges for hydrological prediction and management.

Editor Z.W. Kundzewicz

Citation Dussaillant, J.A., Buytaert, W., Meier, C., and Espinoza, F. 2012. Hydrological regime of remote catchments with extreme gradients under accelerated change: the Baker basin in Patagonia. Hydrological Sciences Journal, 57 (8), 1530–1542.  相似文献   

四川安谷水电站勘探竖井及试验平硐施工工艺          下载免费PDF全文

付兵 《探矿工程》2012,39(6):80-84

四川安谷水电站勘探竖井所处地层河床砂卵石层深厚,采用传统的人工挖掘护壁或沉井施工工艺,施工难度大。针对地层的特点,采用冲击钻机成孔的方式施工。同时,在竖井中开挖试验平硐,遵循多炮眼、小进尺、小药量,光面爆破的施工方案,圆满完成试验平硐的开挖。介绍了其施工技术及注意事项。  相似文献