给水管网课程设计计算说明书VIP免费

《给水管网课程设计》计算说明书题目D县给水管网课程设计学院专业姓名班级学号指导教师设计时间2012~2013学年第1学期16周成绩2012年12月31日目录2一、布置给水管网·······································3二、设计用水量及流量计算······························51、计算设计用水量··································52、计算实际管长和有效管长··························53、计算比流量、沿线流量、节点流量··················7三、管网平差计算·······································91、初步分配管段流量和设定水流方向··················92、选择管径········································93、初步分配各管段最高时流量以及管长、管径的选取····94、哈代-克罗斯法校核环状管网·······················125、确定水泵扬程Hp并求出各节点水压和自由水头········15四、管网核算···········································171、消防时的管网校核································172、确定消防校核后水泵扬程Hp及各节点水压和自由水头··203、最不利管段发生故障时的管网校核··················214、确定事故校核后水泵扬程Hp及各节点水压和自由水头··24五、成果图绘制········································261、绘制给水管网平面布置图及节点详图和消火栓布置·······262、绘制最高时给水管网平面布置图·······················263、绘制消防时给水管网平面布置图·······················264、绘制事故时管网平面布置图···························26六、总结··············································27七、参考文献··········································28一、布置给水管网31、水源与取水点的选择所选水源为D县南面的潇水河，取水点选在水质良好的河段即河流的上游，并且靠近用水区。2、取水泵站和水厂厂址的选择：取水泵站选在取水点附近，用以抽取原水。水厂选在不受洪水威胁，卫生条件好的河段上游。由于取水点距离用水区较近，可以考虑水厂与取水泵站合建。3、给水管网布置（1）原则：符合城市规划，考虑远期发展保证供水安全、可靠管网遍布整个供水区域力求管线短捷（2）布置形式：该设计区域为D县中心城区，不允许间断供水，适宜布置成环状网，可靠性高，水锤危害小。（3）选取控制点：根据D县规划平面图，选择最高最远点最为控制点。（4）定线：干管：先布干管，延伸方向应和二级泵站输水到水池、水塔、大用户的水流方向一致，线路最短，遍布供水区域，干管平行间距为500—800m左右，沿规划道路，靠近大用户。连接管：干管与干管之间用连接管连接形成环状网，连接管平行间距为800—1000m左右。4、在规划平面图上布置给水管网（见下页，详图见图纸）4二、设计用水量及流量计算51、计算设计用水量（1）综合生活用水量Q1：根据《给水管网课程设计任务书》可知，D县近期规划人口为6万人，查表可得综合生活用水定额为300L/cap·d,中心城区用水普及率100%。Q1=q·N·f=0.3·60000·100%=18000m3/d（2）工业企业用水量Q2+Q3工业企业用水量按综合用水量20%计算，即：Q2+Q3=20%·Q1=3600m3/d（3）浇洒道路及绿地用水量Q4浇洒道路面积和浇洒绿地面积各按城区总面积的10%计算，根据《给水管网课程设计任务书》可知，D县城市建设用地面积为10Km2,浇洒道路用水定额为2-3L/m3,浇洒绿地用水定额为1-3L/m3，在此，均取用水定额为=2L...