给水排水管网设计设计正文.doc

摘 要 本设计包括给水系统、污水系统及雨水系统三部分。 给水工程为城市和工矿企业的一个重要基础设施，必须保证以足够的水量、合格的水质、充裕的水压供应生活用水、生产用水和其它用水。给水系统设计步骤：根据最高日用水量变化曲线计算水塔和清水池调节容积；进行管网定线，计算管段设计流量、管径和水头损失；最高时环状网管网平差计算；确定水塔高度和水泵扬程；分别进行不利管段事故时、消防时、最大转输时校核。然后根据上述计算，算出最高时各节点水压，绘制等水压线。 排水工程在环境保护、保障人民健康和经济上有重要意义。排水系统根据对生活污水、工业废水和雨水的不同排除方式所形成的排水系统称作排水体制。排水体制一般可分为两种类型：合流制和分流制。本设计根据当地地形特点和经济状况，采用雨水、污水分流制。设计步骤：分别对污水和雨水系统进行管网定线；然后根据各自汇水面积计算管段流量；确定管径、坡度及埋深，最后根据计算结果绘制污水管道纵断面图。 关键词：设计流量，给水系统，排水系统，雨水系统，管网定线 ABSTRACT The design includes water supply systems, sewerage and drainage systems in three parts. Water supply project for urban, industrial and mining enterprises as an important infrastructure, the need to ensure a sufficient quantity of qualified water, ample supply of water pressure, water and other production water. Water system design steps ,According to the maximum daily water demand curve calculation of the towers and adjust volume-pool. Network for alignment of the calculation of the design flow, diameter and head loss. Ring Network at the highest net adjustment calculation; Identify high towers and pumps lift.Were adverse possession of the accident, fire, the biggest transfer when checking. Then Based on the above calculations, calculated at the maximum node pressure, drawing water pressure line. Drainage projects in environmental protection, protection of the peoples health and economic importance. According to the drainage system of domestic sewage, industrial wastewater and stormwater different exclusion as a result of the drainage system known as the drainage system. Drainage system can be divided into two general types : Combined and triage system. According to the design characteristics of the local terrain and the state of the economy, use of rainwater and sewage triage system. Design steps : Respectively of sewage and stormwater systems network alignment. Then according to their respective catchment area of pipe flow; Determined diameter, depth and slope, Finally, according to the results section of map dr