流量监测软在线架构与实践     

胡余忠  顾李华  舒雷  陈健  丁克亮 《水文》2021,41(1):61-65

聚焦新形势下水资源监测预警、生态流量监测等"水利行业强监管"的要求,以及实时流量监测的迫切需要,基于影响流量的内在水力要素关联,利用已有的实时要素监测信息,架构流量实时监测的通用算法,实现流量"软在线",成果在安徽普遍应用。与既有以流速传感为基础的流量在线监测"硬在线"方法互为补充,探索结果提示新一轮规划应拓宽视野,必要时设置水力控制断面或增加控制河段的辅助站,为流量在线监测提供基础条件。  相似文献   

上游站水位法在高道水文站流量测验整编中的应用     

李瑞林  韩学军 《水文》2007,27(1):72-74

飞来峡水利枢纽建成蓄水后,高道水文站的水位流量关系受回水影响严重,中低水流量测验整编变得相当复杂。用上游站水位法进行中低水流量测验整编很好的解决了这一难题,取得较好的效果,可为具有相同条件下的水文站流量测验整编提供借鉴。  相似文献   

汉江水利工程与环境水文及测验方法研究     

封光寅  陈兴农  马继建 《水文》2007,27(3):53-56

汉江干支流上多座水利枢纽工程的修建,使汉江众多水文站由天然水文进入受水利工程影响的环境水文,其水文情势完全受人工调节,水文要素之间关系复杂多变,这给水文测验和成果计算带来了很大的难度。为此,我们研究出了适合受汉江水利工程影响的环境水文测验方法,提出了水库下游测站输沙模数采用当年入库输沙量加区间来沙计算公式。其测验方法可供同类测站参考。  相似文献   

An assessment of the surface water resources of the Juba-Shabelle basin in southern Somalia     

H. A. Houghton-Carr  C. R. Print  M. J. Fry  H. Gadain  P. Muchiri 《水文科学杂志》2013,58(5):759-774

Abstract

The water resources of the Juba and Shabelle rivers in southern Somalia are important for irrigation and food production, but are influenced by seasonal floods. Prior to the outbreak of civil war in 1991, the Somali Ministry of Agriculture successfully operated a hydrometric network covering the Juba and the Shabelle, data from which provided input to a flow forecasting model. The war resulted in the neglect and abandonment of monitoring stations and an enforced cessation of data collection and management. In 2001 and 2002, part of the pre-war hydrometric network was reinstated and water levels were again recorded at some stations. This paper examines the implications of the 11-year hiatus in data collection, and the now much reduced monitoring network, for assessing and managing the surface water resources. The problems faced have relevance to other basins, within Africa and elsewhere, where there has been a similar decline in data collection.

Citation Houghton-Carr, H. A., Print, C. R., Fry, M. J., Gadain, H. & Muchiri, P. (2011) An assessment of the surface water resources of the Juba-Shabelle basin in southern Somalia. Hydrol. Sci. J. 56(5), 759–774.  相似文献   

架空缆索遥控自动除垢加油器的研制     

董建  董立丰  刘沂轩 《水文》2012,32(3):69-70

缆道测流方法是应用最广泛、最成熟的测流方法。水文测验缆道作为水文测报工作中重要的基本设施之一,随着水文现代化的发展,原始的手摇缆道逐渐实现了自动化,但测流缆道架空缆索保养仍靠人工实现,危险性强、作业难度大,遥控自动除垢加油器的研制成功,实现除垢与加油自动同步进行,提高了缆索保养的效率和质量,延长了缆索的使用寿命。  相似文献   

三峡工程大江截流水文泥沙监测规划   总被引：1，自引：0，他引：1  

戴水平  李云中 《水文》1999,(1):6-10

鉴于三峡工程大江截流是一项复杂的系统工程,具有水深大,流量大,抛投量大和截流期不断航等显著特点。水文泥沙监测作为其重要的组成部分,监测导流与截流过程中水流泥沙和水下地形的变化,为截流设计优化,调整施工方案与措施等提供科学的决策依据,同时也为导流明渠分流与通航,围堰度汛,截流水力学试验研究及水文预报,水文分析计算等提供水文原型观测资料。本文介绍了水文泥沙监测的目的、任务和水文数据采集,传输,处理与信  相似文献   

珠江三角洲地区水文站网布设及水文测验的分析研究   总被引：3，自引：0，他引：3  

姚章民  谢志强  沈鸿金 《水文》2003,23(5):20-23,27

水系复杂的珠江三角洲河网地区具有独特的水文站网布设及水文测验方法。在分析研究目前站网及测验存在的主要问题的同时，对今后的站网建设及测验工作提出了几点有益的建议，将为研究该区的水文规律和特性，为防汛抗旱、治理和开发提供科学依据。  相似文献   

适应于水文体制改革的泥沙测验技术研究   总被引：1，自引：1，他引：0  

牛占  赖世熹 《水文》2000,20(1):10-13,18

针对泥沙巡测简测基础薄弱,不适应水言语体制改革形势的现实,开展了流量输沙上对含沙量调制解调、水沙峰比例系数相关、水沙量相关告示泥沙测算方法的应用研究,进行了输水率与流是异步施测、桥上测沙、邻站相关减站和增加单站间测历时等测沙方式方法的分析,探讨了重力、波粒衰减振管等物理测沙的实用条件并做了部分试验,可人共业务水文部门因地制宜地选择交深入研究。  相似文献   

Remotely sensed estimation of water discharge into the rapidly dwindling Dead Sea     

D. Vachtman  J.B. Laronne 《水文科学杂志》2013,58(8):1593-1605

Abstract

The Dead Sea is shrinking as its water level drops at the alarming rate of about 1 m year^-1. The Dead Sea is important to the economies of Israel and Jordan due to the extracted minerals (primarily potassium, also magnesium and bromide). It is also central to regional tourism. It is the lowest place on Earth and its endorheic, saline basin attracts international research in various disciplines. Additional to the Lower Jordan River, the discharge of which has been decreased to a small fraction of its original value, fresh to brackish springs are the main source of water to the rapidly dwindling Dead Sea. Although the existence of these springs has been known for decades, until recently estimates of spring water discharge into the Dead Sea were scarce. In this study, we developed a methodology of water discharge estimation for channels incising into a lacustrine bed using remotely sensed data and a single hydraulic geometry variable, water-surface width. Based on calibration of over 400 in situ measurements and simultaneous hydrometric data from aerial images, width–discharge rating curves were established, tested, and found suitable (r² = 0.92, p = 0.001) for the estimation of water discharge, with ±5% uncertainty. Furthermore, we used these relationships to estimate retrospectively the temporal changes in water discharge of seven main channels traceable in historical aerial images. The reconstructed trend reveals a major (63%) reduction in average freshwater inflow between 1990 and 2006. Our results maximize the use of water-surface width information from aerial imagery, and suggest applicability to areas experiencing rapid exposure of sea/lake bed and consequent access difficulties in in situ discharge monitoring.