文档介绍：排水设计计算说明书
学院:环境科学与工程学院
专业:给水排水工程专业
级别: 200 级
指导教师:
姓名:
学号:
时间:200 年6月10日
目录
Ⅰ. 排水管道工程课程设计任务书······································2
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Ⅱ. 污水管道设计计算说明···········································4
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(1)居民区污水设计流量···········································4
(2)工业区污水设计流量···········································5
(3)比流量计算··················································5
(4)管段设计流量················································5
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Ⅲ. 雨水管道设计计算说明···········································10
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(1)暴雨强度公式
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(2)地面径流和径流系数··········································11
(3)折减系数··················································12
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Ⅳ. 附表
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排水管道工程课程设计任务书
一、基本资料
1、 ZQ镇规划面积平面图1张。
2、地理位置及地形特点:ZQ镇位于浙江省宁波市境内,规划杭州湾高速公路的东侧,329国道贯穿南北。 km2。全镇地势北高南低,西高东低,~ m之间。
3、规划中该镇由329国道分为南北两区,南面为居民生活区,北面为工业区。居民区人口密度为200人/ hm2,建筑多为2~3层,最高为6层;规划工业区主要为电器、精密机械制造业,在计算用水量时,可折合人口密度为100人/ hm2,按照居民区的计算方式进行,最低服务水头要求为20 m。
4、气温:ZQ镇位于北亚热带南缘,属季风型气候。冬夏稍长,春秋略短。温暖湿润,气温变幅小。℃,1月平均气温最低,℃,7月平均气温最高,℃,极端最低气温-℃,℃。 m。
5、降雨:年平均降水量(含雨、雪、冰雹),年降水量少于1000mm的少水年占15%,%。平均10年中有大旱、大涝各一年。降水量年内分配不均匀,春雨、梅雨、秋雨与伏旱、秋冬旱交替,降水最高峰在9月,,占全年的14%,最高曾达4