太原市城市输水主干线改造工程设计

介绍了太原市城市输水主干线改造工程的方案设计，阐述了长距离大口径输水管道的设计要点，探讨了输水管道管材及附属设施技术参数的设计，从而保证城市供水的安全可靠性。     

山阴县泥河水厂工程高压区供水管水锤分析研究

针对供水工程高压区输水管道距离长、口径大、管道沿线地形起伏变化复杂,一旦发生停泵水锤现象,对输水管道乃至送水泵房破坏影响很大的问题,对泥河水厂高压区长距离大口径输水管道的水锤形成原因、危害及防护措施进行了分析和研究,以期提高供水系统的安全性。     

大口径盾构压力输水管道结构设计

本文主要论述盾构法施工的大口径压力输水管道的主要结构形式、结构设计主要控制要素和计算模型的选择,并通过工程实例验证采用单衬砌盾构用于压力输水管道的可行性.     

某给水厂进厂输水干管顶管技术简介

简要介绍了宁波市某给水厂进厂输水干管设计过程,概括了采用土压平衡法机械顶管技术敷设大口径输水管道的设计思路及其所产生的经济效益和社会效益。     

大口径给水管线工程的设计体会

通过对管线设计中确定管位、确定管材、穿越障碍、管道基础、管道抗震的论述,结合工程实例提出了大口径管线工程的设计体会,以期进一步推广大口径输水管道在给水管线工程中的应用。     

大口径涂塑钢管内外防腐涂层选择

为保证大口径输水管道安全以及饮用水的质量,合理选择管材十分重要,通过综合分析涂塑钢管、PCCP管和DIP管的成本以及防腐形式,说明在大口径输水管道工程中涂塑钢管成本较低且符合饮用水卫生标准,可优先选择徐塑钢管;通过分别比较涂塑钢管常用的几种内防腐涂层和外防腐涂层的性能,总结得到内壁涂装熔结环氧粉末涂料外壁涂装热熔聚乙烯粉末涂料为最佳的防腐工艺组合。因此,内壁熔结环氧粉末涂料外壁热熔聚乙烯粉末涂料的涂塑钢管是大口径输水管道工程中最佳的管材与涂层选择。     

浅谈城市水源地输配水管道工程施工工艺

随着城市的不断发展,饮用水资源及安全问题受到各大城市政府重点关注。愈来愈多城市通过修建输水管道将大型江河、湖泊等优质的原水引入城市供水系统。文章以盐城市新水源地及引水工程射阳支线一标段工程为背景,阐述了城市水源地输配水管道工程农田地貌大口径钢管施工五项创新工艺(运输、对口、除锈、焊接、防风),为类似城市给排水管道施工提供借鉴。     

阴级保护在成都（BOT）输水管道上的设计应用

介绍了成都地区在大口径输水钢管中阴极保护方法，设计参数选择，设计计算等内容。     

预应力钢筒混凝土管在大型输水工程中的难点处理

近年来,预应力钢筒混凝土管(PCCP)的技术愈发成熟,经常在一些大型输水、调水工程中得到应用。论文中介绍的大口径输水管道是在城市的中心区域铺设的,需要解决穿越道路、铁路和河流等难点问题,还需要解决PCCP与钢管之间的转换问题,论文以该工程为例,对PCCP的设计、施工情况进行简要介绍。     

发展预应力钢筒砼输水管势在必行

近年来,我国和世界上许多国家和地区一样,出现了严重的缺水现象,全国约有200多个城市缺水。随着输水量的不断增加及输水距离的拉长,输水管材逐断向大口径、高压力发展,对输水管材的需要量也日趋增加。就管材材料而言,我国有铸铁管、钢管和预应力砼管三种。其中,中小口径铸铁管的质量存在着很大问题,经常发生爆裂事故,大口径铸铁管国内尚未生产。由于钢管耗钢量多,售价也较高,目前仅用于特殊工程的大口径输水管线。预应力砼管,虽在国内已有几十年的使用历史,但是要大批量生产大口径、高压力管(指φ1600mm以上),     

无粘结预应力混凝土管产品特点及工程应用

无粘结预应力混凝土管是国内近几年发展起来的新型管道材料,它是采用单根锚张的无粘结预应力钢绞线技术设计制作的.该产品以大口径为主,已在广东惠州市大亚湾引水工程中大量使用,运营7年来管线正常.本文对无粘结预应力混凝土管产品及其生产、产品标准及工程应用情况进行了介绍.     

大口径PCCP管应用的关键技术问题解析

广州西江引水工程输水管线以DN3 600预应力钢筒混凝土管(PCCP)为主管材,分析了大口径PCCP管在长距离输水管线中应用的关键技术问题,包括管道水头损失的计算、粗糙系数的选用、管材结构设计标准的选择、配件设计、软土地基处理、管道基础形式及止推形式的做法等,最后提出了PCCP管应用的展望与建议。     

内穿插HDPE管修复技术在大口径给水管修复中的应用

结合福州市北区水厂源水管修复实例,介绍了内穿插HDPE管修复技术的原理、施工工艺、主要工序及其技术指标、优缺点、衬管壁厚的选择。结果证明,利用该技术修复大口径给水管可减少投资、节省工时、对环境破坏少,宜于推广。     

谈长距离大管道严密性水压试验

组合城市热网管道的建设，探讨了长距离大管道安装后怎样进行水压试验的问题，阐述了理论计算过程和严密性水压试验方法，总结了在太原集中供热二电工程14km管网主干线严密性试验的成功经验。     

止水与防渗漏技术在顶管工程施工中的应用

某项管工程顶进的钢管直径大,穿越地层主要为中砂层,地下水丰富,施工难度较高.本文介绍了在工作井与接收井的沉井施工、管线顶进施工过程中所应用的止水与防渗漏技术,对洞口止水环的结构、应用作了重点阐述.     

大口径长距离泥水平衡顶管穿越民房的地面沉降控制

大口径泥水平衡顶管掘进机已成为城市市政地下工程首选的施工方法,但由于大口径泥水平衡顶管直径比较大,容易引起地面沉降,因此必须找出大口径泥水平衡顶管推进过程中地面沉降规律,根据规律来进行针对性的控制。结合工程实例,通过收集穿越民房段监测数据来分析土体纵向变形规律,为今后类似大口径泥水平衡顶管穿越建（构）筑物施工作参考。     

Experimental evaluation of bursting capacity of corroded grey cast iron water pipeline

Cast iron was used in the water industry prior to 1970 and a large number of cast iron pipes still remain as trunk mains. These pipes have been subjected to different levels of corrosion and variety of loading conditions. This leads cast iron pipes to fail in the field without prior warning. Water utilities are seeking solutions to optimise cast iron pipe renewal and rehabilitation programs for critical water mains (diameter ≥ 300 mm). A new experimental set-up has been developed at Monash University in order to perform burst testing of large diameter cast iron pipes (diameter ≥ 300 mm). A section of cast iron pipe, extracted during maintenance in Sydney, was laser scanned to determine the remaining thickness of the pipe (minimum of 7–8 mm at the most critical patches). Although the pipe was pressurised to 3.6 MPa, catastrophic failure did not occur. Water leakage from the two critically corroded patches was observed at around 3.25–3.45 MPa internal pressure. Strain results on the outer pipe surface were greater than the strain measured during tensile testing of the same pipe material. A 3-D finite element model using the scanned pipe dimensions was able to predict the maximum pressure at pipe failure (~3.7 MPa) within the range of leaking water pressure level observed in the experiment.     

聚乙烯管材管件的发展综述

本文较详细地介绍了聚乙烯塑料管材在国内外的发展历史及开发过程,以及其在国内建筑、城市给排水和输气、电缆套管等管道工程中的应用.     

Performance-based modelling of long-term deterioration to support rehabilitation and investment decisions in drinking water distribution systems

Managing the urban drinking water system in the long term in order to maintain system performance can be challenging due to the difficulty of modelling future deterioration of the networks. This paper establishes a methodology for cohort survival models where historical (empirical) data on decommissioning ages of pipes are used to calibrate survival functions of pipe cohorts according to service level targets. The benefit of the approach is that remaining useful life of pipes, future renewal rates and investment needs can be governed by a required level of service in the network. A case study shows how the methodology can be applied to a cohort of drinking water pipes to create a ‘calibration curve’, which is a survival function calibrated with empirical data.     

Segment identification in water distribution systems

This paper presents a new method for identifying the segments that are formed after the installation and closure of isolation valves in a water distribution network. This method is able to identify segments also when one-way devices are installed in the network. Thanks to its short computing times, the method enables the analysis of real networks which always comprise a large number of nodes and pipes.

The numerical examples presented in this paper refer to two real water distribution networks. The first network is a part of a provincial network where two one-way devices are present; the second is a complex urban network without one-way devices. The method was first used to analyse the existing situation in both networks, i.e. the set of segments that are formed as a consequence of the present valve system. The method was subsequently used for the problem of the hypothetic redesign of the isolation valve system in the second urban network, i.e. the search for the optimal positions of the isolation valves in the network; in the redesign phase it provided solutions which are more cost-effective than the configuration of isolation valves currently present, the level of water service reliability being the same.