Selection of Water Transmission Method and Analysis of Pipe Network Zoning in Municipal Water Supply and Drainage Design

With the acceleration of urbanization,the demand for water supply and drainage pipe networks has increased significantly.In the planning of urban construction,it is necessary to optimize the design of the water supply and drainage system pipe network to effectively save energy while providing residents with more accessible water resources.Therefore,the municipal water supply and drainage system and the water transmission methods should be designed according to the geographical conditions of the city.In this paper,we mainly analyze the design of municipal water supply and drainage systems and the selection of water transmission methods.Besides,the optimization of the water supply and drainage network zoning process and pipe network maintenance is also discussed,so as to provide a reference for municipal water supply and drainage work.

Analysis of Municipal Water Supply and Drainage Pipe Design Technology

The quality and safety of residents’water rely heavily on the design of municipal water supply and drainage pipes.Therefore,this paper aims to enhance the optimization of municipal water supply and drainage pipe design by focusing on design requirements,principles,and key elements.Drawing from relevant design optimization experiences,technology advancements,and optimization measures,the research will analyze and consolidate the essential aspects of municipal water supply and drainage pipe design.The goal is to fundamentally elevate the quality standards of these designs,ensuring they meet the criteria for engineering project excellence.Through this comprehensive approach,we aim to contribute to the improvement and sustainability of water supply and drainage systems,safeguarding the well-being of residents.

Analysis of HDPE Pipe Construction Process in Municipal Water Supply and Drainage Construction

The construction of water supply and drainage pipelines is a very important part of municipal construction.The construction of HDPE pipe has been widely used in the construction field of water supply and drainage pipelines due to its many advantages.Therefore,the construction process of HDPE pipe has also been studied more and more in the construction of municipal water supply and drainage,which is of great significance for the application of HDPE in municipal water supply and drainage construction.This paper analyzes the HDPE pipe construction process of municipal water supply and drainage construction workers,and hopes to help the good application of HDPE pipe and the improvement of municipal water supply and drainage construction quality.

Reflections on the Construction of Water Supply and Drainage in Integrated Pipe Corridor of Sponge City

With the continuous development of economy and society and the continuous improvement of peoples’living environment requirements,the concept of sponge city construction has been recognized and understood by more and more people.The country has also recognized the significance of planning and construction of sponge cities.In the process of planning and constructing a sponge city,it is necessary to combine the reality of urban development with the construction of urban water supply and drainage systems and underground pipe corridors to promote the process of urban modernization.Based on this,this paper analyzes the water supply and drainage construction of the integrated pipe corridor in the sponge city.

Impact of the Condition of Drinking Water Supply Networks on the Quality of Water Intended for Consumption: The Case of the Network in the Commune of Daloa (Central West of Côte d’Ivoire)

The potability of drinking water depends not only on the source and the treatment system, but also on the quality of the waterworks. In fact, the quality of drinking water is considerably degraded by the dilapidated state and lack of maintenance of drinking water networks. In Côte d’Ivoire, the majority of drinking water networks in the various towns are ageing. In Daloa, despite the efforts made by the company in charge of water treatment and distribution to make the water drinkable, the water at consumers’ taps is often colored, has an unpleasant aftertaste and settles after collection. As a result, people are concerned about the potability of tap water, and some are turning to alternative sources of drinking water of unknown quality. In order to determine the factors responsible for the deterioration in water color and taste, as well as the sectors of the network most affected, a diagnosis of the network’s equipment was carried out. Water samples taken from the network were analyzed for color and turbidity. The diagnosis revealed that most of the equipment (suction pads, valves, drains and fire hydrants) is outdated and irregularly maintained. Analyses show that the water is more colored in cast-iron and PVC pipes than in asbestos cement pipes. Coloration values in the network range from 0 to 27 UVC for asbestos cement pipes, from 15 to 56 UCV for ductile iron pipes, and from 11 to 102 UCV for PVC pipes. On the over hand, turbidity values vary from 8.02 to 3.32 NTU for ductile cast iron pipes, 8.51 to 16.98 NTU for asbestos cement pipes and 0.9 to 6.98 NTU for PVC pipes. Old cast-iron pipes release ferric ions on contact with water, degrading their color. Old cast-iron pipes release ferric ions into the water, degrading its color. The high color values observed in the vicinity of drains are thought to be due to irregular maintenance of the network. In fact, after network maintenance, a reduction rate ranging from 2% to 73% is observed for turbidity, while for color, the rate varies from 5% to 72%. In short, the network’s obsolescence and irregular maintenance contribute significantly to the deterioration of water quality.

Effectiveness of urban distributed runoff model for discharge and water depth calculation in urban drainage pipe networks

Effective urban land-use re-planning and the strategic arrangement of drainage pipe networks can significantly enhance urban flood defense capacity.Aimed at reducing the potential risks of urban flooding,this paper presents a straightforward and efficient approach to an urban distributed runoff model(UDRM).The model is developed to quantify the discharge and water depth within urban drainage pipe networks under varying rainfall intensities and land-use scenarios.The Nash efficiency coefficient of UDRM exceeds 0.9,which indicates its high computational efficiency and potential benefit in predicting urban flooding.The prediction of drainage conditions under both current and re-planned land-use types is achieved by adopting different flood recurrence intervals.The findings reveal that the re-planned land-use strategies could effectively diminish flood risk upstream of the drainage pipe network across 20-year and 50-year flood recurrence intervals.However,in the case of extreme rainfall events(a 100-year flood recurrence),the re-planned land-use approach fell short of fulfilling the requirements necessary for flood disaster mitigation.In these instances,the adoption of larger-diameter drainage pipes becomes an essential requisite to satisfy drainage needs.Accordingly,the proposed UDRM effectively combines land-use information with pipeline data to give practical suggestions for pipeline modification and land-use optimization to combat urban floods.Therefore,this methodology warrants further promotion in the field of urban re-planning.

基于Android供水管网移动端巡检系统设计

目的解决传统的经验式供水管网巡检模式导致的巡检效率低、监控手段落后、抢险维修应急反应不及时和管网系统信息利用率不高等问题.方法分析供水管网现状,结合企业科技化需求,提出一种结合Arc GIS管网地理空间系统和SCADA管网监测点的监控系统,以Android移动终端为平台,利用终端GPS定位系统和4G网络通讯交互的现代化技术,以SOA设计理念和Ajax技术设计系统架构,利用UML序列法对供水管网巡检系统应具有的主要功能进行设计.结果构建集供水管网信息采集、巡检系统导航定位、管网事故抢险维修和系统信息管理为一体的供水管网移动端巡检系统.结论实现了供水管网巡检的高效智能运行,提高了企业信息化水平.

天山胜利隧道内置高位水池的消防供水系统设计研究

为解决10 km甚至20 km以上的高寒高海拔超长公路隧道消防供水系统设计中洞外设置供水系统被冻结、洞内管网严重超压等难题,通过对乌尉高速天山胜利隧道消防设计的难点,以及常规的隧道外常高压供水系统及稳高压供水系统在该隧道中难以实施等问题展开深入研究,提出天山胜利隧道内设置高位消防水池及将隧道内消防管网进行分区供水的设计方案并详细论述。对于10 km甚至20 km以上的高寒高海拔超长公路隧道消防供水系统的设计:1)隧道消防给水宜采用高位消防水池供水的常高压供水系统;2)常规的隧道外常高压供水系统及稳高压供水系统在高寒高海拔超长公路隧道中无法实施,可考虑隧道内置高位消防水池的设计;3)隧道内置高位消防水池的数量、设置间距、设置高度等应根据隧道的长度、纵坡等综合考虑并进行水力计算后确定;4)隧道内置高位消防水池的常高压供水系统能解决这类隧道消防供水系统设计中管网严重超压的难题,具有供水安全可靠、施工难度较小、经济、环保等优点。

CDIO模式下一流专业课程实践教学改革探究——以给水排水管网系统为例

针对给排水科学与工程一流专业的人才培养目标,通过剖析给水排水管网系统课程教学现状和存在的问题,提出基于CDIO模式的创新实践教学体系。将项目驱动、“做中学”等教学方法引入给水排水管网系统课程实践教学,探索实践与理论深度有机融合的途径,提升学生对现代化管网系统的设计、运行及管理意识,为培养创新型人才提供思路和借鉴。

市政给排水施工中长距离顶管施工技术研究

本文简要分析市政给排水施工中长距离顶管施工技术,并以市政给排水施工中长距离顶管施工技术应用分析作为切入点,对施工准备、工艺方法、技术要点以及施工效果等方面进行研究,期望能够为相关人员提供参考,以此来加强市政给排水施工中长距离顶管施工技术研究,提高市政给排水施工质量。

西北地区某市地下水供水管网黄水产生原因分析与控制技术中试研究

随着供水管道使用年限的增加,管网逐渐老化,管网化学稳定性问题日益突出。为解决西北地区某市高碱度地下水供水管网黄水问题,保障用水安全,开展了黄水产生原因分析与控制技术中试研究。一方面,监测黄水形成过程中水质特点和规律,对铸铁管腐蚀管垢成分进行分析,探明黄水形成原因。另一方面,搭建管网中试系统,研究了余氯、碱度、缓蚀剂对管网铁释放的影响。结果表明:黄水形成存在周期性规律,形成原因为水力冲刷增强导致管垢中的铁释放到水体中,水体存在一定的腐蚀性也会影响铁释放。管垢主要成分为Fe3O4和α-FeOOH,但不同管垢层形貌特征及化学组成存在差异。建议该地区管网余氯浓度控制在0.4 mg/L左右,余氯较高或较低均会促进铁释放。综合考虑效果和经济性,应对突发性黄水问题时,建议优先采用0.5 mg/L(以P计)的三聚磷酸钠作为缓蚀剂投加控制黄水现象。每吨水需增加药剂成本约为0.018元。

市政给排水输水方式及管网分区研究

从输水方式和输水计算两方面具体阐述市政给排水输水方式的选择,通过分析市政管网系统阶层、设计管网边界及进水点、合理选择节能设施设备、加强分区方案造价分析4方面来阐述市政给排水管网分区要点。

叠压供水系统对市政管网的影响分析

叠压供水充分利用管网余压进行变频恒压供水,具有节能、供水水质稳定等优点。然而叠压供水系统直接与市政管网相连,启动时会引起接入点及管网上下游的流量和压力波动,对市政管网输送水量变化和压力变化带来影响。以江苏省JT城区的市政管网为研究对象,采用EPANET软件执行延时模拟、HAMMER软件执行瞬时模拟,分析叠压供水系统对市政管网的影响程度和规律,并确定了两个评价指标:最低市政供水压力要求和系统接入点运行压降要求。结果表明,叠压供水系统对市政管网的影响与小区入住率、用水时段、叠压数量等因素有关;小区附近叠压供水系统数量越少、分布越稀疏,多叠压供水系统运行时接入点压降就越小。当实际应用中影响超出安全范围时,建议通过优化控制方式和供水方式缓解影响,保障供水安全。

二次供水叠压设备准入判据及管网压力变幅分区方法

为了明确叠压供水方式的准入标准,提出了用于叠压供水设备选取及城市给水管网压力变幅分区的判据,并对其重要参数——叠压最小允许压力H_(dmin)、叠压最大压力波动ΔH_(dmax)进行原理分析,据此判据将城市给水管网划分为压力稳健区、压力波动区、压力脆弱区,并以在西部A市自来水公司GIS、SCADA系统采集的2022年西部A市主城区年最大用水日时全部供水节点的日最大水压、最小水压为可信数据,作出西部A市主城区给水管网的压力变幅分区图,以此作为西部A市主城区叠压供水设备选取的参考依据。

市政给排水施工中的长距离顶管施工技术研究

以某工程为例,针对传统顶管施工出现的质量问题,分析顶管施工地面变形情况,通过工作井施工、穿墙施工、管道顶进施工、管线纠偏、土压平衡控制,有效控制长距离顶管施工工艺,以此提高施工效率与质量,提出新型施工技术。由实例可知,新施工技术在使用时,能够平衡控制土体压力,防止地面出现变形。

基于海绵城市运维管理理念的市政道路设计方法探讨

海绵城市的建设要求实现排水优化设计,改变传统的模式,在达到生态环境保护要求的基础上,促进市政道路建设水平的提升。文章结合海绵城市发展理念,提出了其应用的重要性以及生态性、因地制宜、预见性、经济性的各项原则和策略,并对市政道路的路面设计、绿化带设计、生物滞留带设计、路肩边沟设计、边坡防护设计、雨水口设计提出要综合、合理的安排和设计,以提升道路的绿化性、环保性、安全性的各项功能。

市政给排水施工的关键技术研究

本文就市政给排水工程土方开挖、管道敷设、管道连接以及沟槽回填流程,探究水压实验、土压平衡、接口处理以及水平钻进等关键技术在市政给排水工程的应用,以期为给排水工程提供参考。

基于海绵城市理念的市政给排水设计

若市政给水引入点的管道位置分布混乱,会导致市政给排水流量受限,增加由于暴雨等极端天气事件或其他突发情况造成的城市损失。因此,基于海绵城市理念,优化市政给排水工程。根据给水引入点排布市政管道位置,计算市政给水余压供水区间,在区间范围内确定了市政排水管出户标高,根据市政排水管出户标高,确定了喷头流量总和与管道作用面积之间的关系,设计了平均配水量配水支管,折算每段配水支管的流量,计算了配水支管间的流量系数,以此完成市政排水设计。分割项目工程系统管道内的机械样板空间,参照管线完成水平管道施工。结果分析表明:同等效段内,基于海绵城市理念的市政给排水加压设备耐久度更高,管道排水流量较大,海绵城市理念与市政给排水设计过程的融合效果得到保证。

顶管技术在市政给排水工程中的应用研究

近年来,顶管施工技术的顶进距离不断增加,在埋深较大的工程中顶管技术也被广泛应用,需要顶管施工克服复杂地质条件限制,满足工程建设质量需求,确保工程施工效率。文章介绍了某给排水工程应用顶管技术进行长距离顶管施工的情况,分析了施工关键流程、施工操作要点,并对施工中的技术控制和问题处理措施进行了研究,旨在帮助技术人员了解顶管施工技术的要点,提升在市政给排水工程中顶管技术的应用水平,满足城市建设需求。

市政给排水施工中的非开挖顶管施工技术

随着社会的不断进步,城市人口越来越多,市政给排水施工的重要性也日益凸显出来,而在市政给排水施工中非开挖顶管施工技术应用较为广泛,该技术具备安全、经济、高效、环保等优势,可以满足市政给排水施工的要求。非开挖顶管施工技术主要是通过顶进技术与施工工艺两个方面的综合应用来实现城市地下管道工程的建设,并在此基础上推动城市经济的发展。论文首先介绍非开挖顶管技术在市政给水施工中的重要意义,其次分析市政给排水施工中的非开挖顶管施工技术,最后探讨市政给排水施工质量控制策略,以期为相关工作者提供参考。