共查询到20条相似文献,搜索用时 171 毫秒
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北京市小城镇排水管网规划设计探讨 总被引:3,自引:0,他引:3
排水管网是小城镇基础设施的一个重要组成部分,在促进经济建设的发展、保护城镇环境免受污染、保障人民健康与正常生活方面起着至关重要的作用。根据北京市小城镇的实际情况,从小城镇排水规划原则、排水体制选择、污水管道设计流量计算、管线布置及水力计算等方面归纳了小城镇排水管网规划设计的特点及应注意的问题,提出了北京市小城镇排水管网合理规划设计的建议。 相似文献
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地下排水管道流量检测技术进展 总被引:1,自引:0,他引:1
排水管道属于资金密集型市政基础工程.准确掌握管道内水流状况,是改善排水系统管理、科学制定管道系统改扩建方案的必要条件,也是今后利用先进技术建立管道系统模型、实现计算机实时控制的基础.系统总结了排水管道流量测试的常规技术,提出了适用性评估方法,介绍了目前国际上较为先进实用的排水管道流量检测设备及其在上海的应用,以期推动国内排水管道的流量检测与排水系统的管理水平. 相似文献
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香港岛南区雨水管网整体规划设计是临海、临江城市雨水管网规划设计的典型实例。重点介绍了该工程如何使用水力模拟软件辅助设计的基本方法以及其它相关内容:确定潮汐水位对雨水管网排水能力的影响,划分集水分区防洪级别,利用HydroWorks和MIKE11建立、校核、调整雨水管网的水文水力模型(以下简称模型)以保证模拟结果的可靠性,根据现状模型的运行结果对管网进行现状评价和洪水风险评估,利用规划模型辅助管网改造设计和方案最优化。 相似文献
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The design of the urban sewage system is site specific, and it makes the use of three-dimensional (3D) model an alternative to a field study or a laboratory experiment. However, the use of 3D computational fluid dynamics (CFD) in the study of the urban sewage system has been generally limited to the study of a single structural component with simplified assumptions. In this study, the 3D model that adopted the renormalized group (RNG) k-ε turbulence model, the volume of fluid (VOF) free water surface model and the particle tracking approach was verified comparing the predicted flow field data with the measurements in laboratory scale experiments. Then, the model was applied to optimize the design of the combined sewer system (CSS) in the city of Edmonton with multiple hydraulic structures. Considering the details of predicted flow characteristics and the behaviors of the suspended solids, the final design was chosen and implemented to reduce the water pollution induced by the direct combined sewer overflow (CSO) discharge to the receiving water body. It is shown that the proposed 3D CFD modeling approach is a cost-effective tool to design the municipal sewer system. 相似文献
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J Pollert R Ugarelli S Saegrov W Schilling V Di Federico 《Water science and technology》2005,52(12):207-214
Sewer and wastewater systems suffer from insufficient capacity, construction flaws and pipe deterioration. Consequences are structural failures, local floods, surface erosion and pollution of receiving waters bodies. European cities spend in the order of five billion Euro per year for wastewater network rehabilitation. This amount is estimated to increase due to network ageing. The project CARE-S (Computer Aided RE-habilitation of Sewer Networks) deals with sewer and storm water networks. The final project goal is to develop integrated software, which provides the most cost-efficient system of maintenance, repair and rehabilitation of sewer networks. Decisions on investments in rehabilitation often have to be made with uncertain information about the structural condition and the hydraulic performance of a sewer system. Because of this, decision-making involves considerable risks. This paper presents the results of research focused on the study of hydraulic effects caused by failures due to temporal decline of sewer systems. Hydraulic simulations are usually carried out by running commercial models that apply, as input, default values of parameters that strongly influence results. Using CCTV inspections information as dataset to catalogue principal types of failures affecting pipes, a 3D model was used to evaluate their hydraulic consequences. The translation of failures effects in parameters values producing the same hydraulic conditions caused by failures was carried out through the comparison of laboratory experiences and 3D simulations results. Those parameters could be the input of 1D commercial models instead of the default values commonly inserted. 相似文献
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胥书霞 《水利与建筑工程学报》2011,9(1):87-90
设计秒流量的计算是管网水力计算的基础,是确定各管段管径、计算管道水头损失,进而确定给水系统所需压力的主要依据.选择正确的设计秒流量计算方法至关重要.例举建筑给水工程中设计秒流量计算出现的常见问题,并将Excel计算表格加以完善,形成第二类建筑的通用计算表格. 相似文献