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下坂地水利枢纽是《塔里木河流域近期综合治理规划》的山区龙头水库工程。本文以叶尔羌河完成输送塔里木河生态水量为目标、以660万亩灌区需水为基础,通过流域内下坂地水库、平原水库、地下水库联合调度,建立数学模型,进行不同节点替代平原水库座数、不同时段蓄水量的优化比选;论证出下坂地水库替代16座平原水库与剩余24座平原水库联合调度的规则,可实现叶尔羌河流域水资源优化配置,确保流域经济社会与生态建设可持续发展。 相似文献
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近10a叶尔羌河下游洪泛区社会系统风险在上升,因此在叶尔羌河上建立了EWS。从叶尔羌河EWS自动地面监测站预警过程来看EWS是一种能有效地降低冰湖溃坝洪水灾害风险的措施。文中结合叶尔羌河历史洪水资料和调查的洪水引起的下游洪泛区的经济损失提出了一种确定EWS预警参数的方法,具有一定的精度。同时针对当前叶尔羌河下游洪泛区社会系统的脆弱性,确定出合理的预警参数。 相似文献
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开展山区水库联合调度对于发挥水库综合效益、提高下游灌区灌溉保证率、实现水资源高效利用等具有重要意义。以新疆叶尔羌河流域为例,对山区水库联合调度进行可行性分析,结果表明:山区单库调度均不能满足下游灌溉保证率要求;山区水库联合调度能够满足下泄塔里木河生态水量、灌溉设计保证率供水要求。研究成果为实现流域水资源高效综合利用提供了参考借鉴。 相似文献
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王远庆 《陕西水利水电技术》1998,(3):44-44
下坂地水库位于新疆叶尔羌河的主要支流的塔什库尔干河上。库坝区处于古水库库区遗址中。河床覆盖层厚达157.8m,由砂、砂卵石、淤泥层构成。地层架空严重,且松散,地下水活动强烈,钻进难度大。 相似文献
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下坂地水利枢纽工程是塔里木河流域近期综合治理中唯一的山区控制性水库工程,本文以下坂地项目如何完成叶尔羌河向塔里木河输水规划为目标,重点就山区水库如何替代平原水库、实现水资源统一调配、发挥水资源的综合效能进行分析论证,建立数学模型。通过流域内山区水库、平原水库、地下水库联合调节,进行流域内的水文补偿,跨流域的电力补偿及利用下游灌区平原水库的反调节作用,可确保叶尔羌河流域经济发展与生态建设以及向塔里木河输送生态水目标的实现。 相似文献
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赵克玉 《水资源与水工程学报》2001,12(1):32-36
三门峡水库修建后,潼关处于水库库区,河床淤积抬高。抬高过程与三门峡水库的运用方式及泄流规模密切相关。本文从实测资料入手,主要分析了三门峡水库控制运用以来,潼关河床高程的变化。非汛期水库高水位运行时间长,潼关河床淤积抬高,汛期冲刷历时短,溯源冲刷发展不到潼关,潼关河床得不到有效冲刷,且不利于汛期输沙,都是潼关河床抬高的主要原因。 相似文献
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三峡库区支流库湾水体富营养化演变特征研究 总被引:1,自引:0,他引:1
支流库湾水体富营养化是三峡水库蓄水带来的主要水环境影响特征之一。根据对不同历史蓄水期间三峡库区各支流库湾的水质变化特征及富营养化状态分析表明:三峡水库从试验性蓄水阶段进入常态调度运行后,支流库湾的水动力条件被进一步削弱,入河污染物扩散能力大幅度降低,库湾水质逐渐变差,各支流库湾普遍表现为中、富营养级水平,年内整体表现为春季高于秋季。从三峡库区支流库湾水体富营养化演变特征来看,库湾水动力条件由河流态改变为湖库态是其发生水体富营养化的主驱动力因素,陆域营养盐输入是库湾水体富营养化演变的物质基础 相似文献
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Porsuk Dam Reservoir (PDR), which is located on Porsuk River, is the main drinking water resource of Eskisehir City-Turkey. Both the river and the reservoir are under the threat of several domestic and industrial point sources and land-based diffuse pollution. The river water quality is very poor with high concentrations of nitrogen and phosphorus compounds at the entrance to Porsuk Reservoir. The reservoir shows symptoms of a hypertrophic lake. The expected responses of the whole river and reservoir system under different pollution control scenarios were estimated to develop plausible water quality management strategies. The adopted scenarios assumed different levels of treatment for the major domestic point sources that include conventional treatment and tertiary treatment. The contemporary Turkish Allowable Discharge Limits (ADLs) and the best available technology choices were the investigated treatment options for the major industries. The expected improvements of water quality characteristics under the management scenario options have been estimated by means of mathematical models. The model choices were the QUAL2E for the river and BATHTUB for the reservoir. Recommendations for different levels of treatment were derived in order to improve the water quality both within the river and in the reservoir. 相似文献
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吴家庄水库坝址区岩洛渗漏是最主要的工程地质问题,直接影响建库规模和工程的可行性。通过对库区岩溶发育规律、特征及库区岩溶渗漏条件进行分析、计算、评价,认为水库正常高水位825m为宜。 相似文献
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准确模拟和预测水库及下游河道的水温分布规律对降低水电工程环境影响起着重要作用。基于MIKE系列软件,采用一维水温模型对怒江中下游天然河道水温进行数值模拟计算,并在对怒江规划龙头马吉水库的水温类型进行判别的基础上,运用库区立面二维水温模型对库区及下泄水温变化进行预测。计算结果表明,马吉水库为典型温度分层型水库,来水量越大,表层水温越低,底层水温越高。水库建成后,下泄水温过程与天然河道水温过程差异加大。上述研究可为在水电工程运行中采取措施应对水温变化提供技术支撑。 相似文献
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干河水库主副坝之间分布一条可溶岩条带,因岩溶渗漏严重导致水库未能蓄水而停建。专项勘察表明,只有主副坝之间分布的可溶岩条带控制水库的成库条件;水库主要岩溶渗漏通道为回子龙潭季节性暗河系统,经过系统的防渗处理,干河水库可以成库。 相似文献
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Ecological operation for Three Gorges Reservoir 总被引:1,自引:0,他引:1
The traditional operation of the Three Gorges Reservoir has mainly focused on water for flood control,power generation,navigation,water supply,and recreation,and given less attention to the negative impacts of reservoir operation on the river ecosystem.In order to reduce the negative influence of reservoir operation,ecological operation of the reservoir should be studied with a focus on maintaining a healthy river ecosystem.This study considered ecological operation targets,including maintaining the river environmental flow and protecting the spawning and reproduction of the Chinese sturgeon and four major Chinese carps.Using flow data from 1900 to 2006 at the Yichang gauging station as the control station data for the Yangtze River,the minimal and optimal river environmental flows were analyzed,and eco-hydrological targets for the Chinese sturgeon and four major Chinese carps in the Yangtze River were calculated.This paper proposes a reservoir ecological operation model,which comprehensively considers flood control,power generation,navigation,and the ecological environment.Three typical periods,wet,normal,and dry years,were selected,and the particle swarm optimization algorithm was used to analyze the model.The results show that ecological operation modes have different effects on the economic benefit of the hydropower station,and the reservoir ecological operation model can simulate the flood pulse for the requirements of spawning of the Chinese sturgeon and four major Chinese carps.According to the results,by adopting a suitable re-operation scheme,the hydropower benefit of the reservoir will not decrease dramatically while the ecological demand is met.The results provide a reference for designing reasonable operation schemes for the Three Gorges Reservoir. 相似文献
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高密度电法在岜蒙水库暗河探测中的应用 总被引:1,自引:0,他引:1
应用高密度电法对岜蒙水库龙王庙地下暗河通道进行追索探测,基本查明该地下暗河在水库内的地下空间展布,为水库加固加高扩容提供设计依据. 相似文献