水管道

• Some new ideas and main content showed in the article are as the follows . 1st . research on gas properties in pipeline system according to document references , by far there is no systematic research on gas thermal insulation coefficient in delivery pipeline with gas
  论文研究的主要内容及创新点如下： 1 、管道系统中的气体特性研究已有文献表明，含气输水管道系统中气体多方指数n的变化规律至今还缺乏系统研究。
• Abstract : this paper takes shanghai huangpu upper river reaches diversion stage 1 and stage 2 project for example to analyze the reasons of the leakage , to introduce design and construction technical improvement of the large - sized long distance buried reinforced concrete water transmission conduit
  文摘:本文以上海黄浦江上游引水1 、 2期工程为例，分析大型长距离埋地钢筋混凝土矩形输水管道的渗漏原因，以及设计和施工技术的改进。
• The salt water system drawing for the kowloon south no . 2 pumping station and its reservoir andor the latest planning report would be useful to our understanding of the proposed salt water reticulation to the north of the development area via the pcwa . may we obtain a copy of them
  为了解经公众货物装卸区连接发展区北面的拟议咸水管道网，九龙南二号海水抽水站及其配水库的咸水系统绘图及或最新规划报告对我们甚为有用，可否给我们一份复本？
• Combining physical experiments and theoretical analysis , this literature has performed thorough research on gas properties of delivery pipeline system , pressure current rush to interception air - mass in pressure pipeline , water hammer with gas that happens with gas releasing and liquid column separating
  本论文通过物理试验与理论分析对输水管道系统中的气体特性、压力水流冲击截留气团和包含气体释放和液柱分离现象的含气水锤进行了深入研究。
• Research on current rush to interception air - mass in delivery pipeline system and water hammer with gas is a branch of concurrent gas - liquid flow . for it refers to many fields , such as fluid mechanics , transient flow , concurrent gas - liquid flow and thermodynamics , the problem is very complicate , and there are still some issues to be deeply studied actually
  输水管道系统水流冲击截留气团与含气水锤研究属于气液两相流的一个分支，该问题涉及到瞬变流、空化、气液两相流和热力学等多领域的理论，因而该问题十分复杂，有必要进行深入研究。
• The tai po water treatment works together with the butterfly valley primary service reservoir in kowloon and the 12km long treated water aqueduct connecting the two waterworks form the tai po water scheme . this is one of the biggest water supply projects that the water supplies department ( wsd ) has undertaken in recent years
  大埔滤水厂连同九龙的蝴蝶谷食水主配水库，以及连接滤水厂和配水库的十二公里长食水输水管道，组成大埔滤水厂供水计划，是水务署近年来进行的其中一项最庞大的供水工程计划。
• The physical experiments and theoretical analysis indicate that rush pressure caused by current rush to interception air - mass in delivery pipeline system has much to do with the content of air - mass . the maximum rush pressure occurs not under the condition - much lower or much higher content of air - mass , but when the initiate volume of interception air - mass makes up 1 ~ 2 % of total pipeline volume , maximum current rush to interception air - mass pressure happens
  试验研究表明，输水管道系统水流冲击气团(囊)造成的冲击压力与气团(囊)的含量有密切关系，截留气团含量太多或太少所产生的冲击压力都不是最大，当截留气团在一个大气压下的初始体积占管道总体积在1 2左右，水流冲击气团压力最大。
• This article links to the plant no . 6 project , studying the measure of pressure reduction and energy removal of large caliber and long distance water delivery pipe in big difference of elevation and topographical form area . the writer gives new measure of pressure reduction and energy removal , according to the theory of pressure reduction and energy removal , planning a composite energy removal construction , and put to use effectively in many water supply projects . it is the first example that people use concrete construction to remove high pressure in large caliber and long distance water pipe in china
  本文结合西宁市第六水源工程，对高差大、地形地貌复杂地区大口径长距离输水管道消能减压措施进行了研究探讨，提出了全新的减压消能方案，根据减压消能原理，自行设计出了综合式消能构筑物，并应用于多项输水工程中，效果良好，成为国内首例采用钢筋混凝土构筑物消除大口径长距离输水管道较高压力的案例。