汾河二库大坝安全监测成果分析

汾河二库大坝为全断面碾压混凝土重力坝。在坝体、坝基及岸坡共埋设内、外观测测点 335个。本文就施工阶段内部观测的部分成果进行了整理分析     

李家河大坝枢纽工程的施工导流和坝基排水

:本文介绍了李家河大坝工程在坝基开挖中施工导流和坝基排水方案的变更情况 ,确保了坝基开挖施工     

投盐法分析黄源水库大坝渗漏

水利工程渗漏一般较难准确确定具体渗漏部和投盐法分析大坝渗漏，可为工程除险加固设计提供依据。     

对汾河二库重力坝下游坝坡调整

汾河二库枢纽工程是我省八五期间的重点建设项目，枢纽中的拦河大坝为碾压混凝土重力坝，对于碾压混凝土重力坝的设计在我省还仅仅是第一次，我们还没有这方面的经验，再加上该坝与常规的坝有所不同，坝址处的工程条件比较特殊，河床狭窄，覆盖层厚达２６～２８ｍ，坝体承受的荷载相当复杂，这就越增加了设计的难度。本文通过对原可研成果进行优化的论述，分析了断面设计中应该注意的问题，为今后类似的工程设计提供了借鉴的经验。     

山西省水土保持治沟骨干坝工程管理系统的开发

办公自动化是提高机关工作质量和效率的重要途径，本文主要介绍用Ｖｉｓｕａｌ Ｂａｓｉｃ语言开发《山西省水土保持治沟骨干坝工程管理系统》的经验和体会。     

清江隔河岩大坝表孔深孔闸门及坝体泄洪振动与控制研究

 通过原型观测试验获得了清江隔河岩大坝表孔、深孔闸门及坝体泄洪的实测数据。测试成果表明：在稳态工况下，表孔、深孔闸门运行平稳，大坝主体的振动很小。表孔闸门在3.3～7.0m开度时，出现了250 s左右的拍振现象,但不会影响表孔闸门的运行安全。深孔闸门在0.3～6.0m开度时,由于深孔闸门侧止水严重漏水,出现了强烈振动,应当引起足够重视。     

The effects on fish spawning and management implications of impoundment water releases in an intermittent South African river

The potamodromous smallscale redfin minnow (Pseudobarbus asper) spawned in the riffle areas of the regulated Groot River, the major tributary of the Gamtoos River system, during controlled releases of water from Beervlei Dam. Water had been released at irregular intervals from this flood control dam solely for irrigating agricultural lands. Flushing flows removed accumulated salts from riverine pools and were followed by reduced flows which initiated spawning of the minnow species. Developing embryos of P. asper were found in the riffle zone of the main river channel during the water releases. Ripe-running males were located under the boulders in the riffles. Several developing embryos of Labeo umbratus were found with the P. asper eggs. Very little is known about the effects of man-made alterations to the river flow regime on the reproductive activity of fishes in the majority of South African river systems. The agriculturally based flooding regime at Beervlei may have increased the recruitment of the redfin minnow species. Water management must give cognizance to the biological and environmental requirements within the regulated river systems. Water release strategies from Beervlei Dam should include instream flow decisions based on the requirements of the aquatic environment as well as for agriculture.     

新奥法在百色水利枢纽导流洞设计和施工中的应用

新奥法是新奥地利隧洞施工方法的简称,也是近几十年地下工程设计和施工的新理论和新技术,它从根本上破除了岩石的散粒理论,充分考虑了围岩的自身承载能力。百色水利枢纽导流洞设计和施工中引进了这一先进理论和技术,而且创造性地把新奥法应用到软岩的地下工程,是对新奥法理论和技术的创新和发展。     

改进层次分析法在土石坝安全评价中的应用

对影响土石坝安全的基本事件进行系统分析和研究,开发土石坝安全评价数学模型。该模型直观地反映了各基本事件之间的关系,利用概率计算理论求解土石坝溃决概率,同时引用改进层次分析法,分析各基本事件对大坝溃决的影响程度,可较好地确定各基本事件的概率权重。以陆浑水库大坝为例进行安全评价,对数学模型进行验证,结果表明该模型的模拟计算结果与目前对大坝安全评价的结论较吻合。     

预裂爆破在龙华口坝肩石方开挖中的应用

龙华口水电站大坝是一座碾压混凝土大坝,左右坝肩边坡采用周边预裂深孔爆破,文中具体阐述了应用孔外微差及孔内延时爆破技术的具体情况。