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市政排水工程设计步骤是什么？

市政排水工程设计步骤是什么？

浏览：50次 | 提问时间： 07-06 05:27

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或喜或悲 07-06 05:28

如下1、拿项目，弄清项目设计内容。设计内容包括本次设计的范围，需要对哪些管线进行设计，业主对本次设计有什么要求(比如：管道基础是采用砂石基础还是混凝土基础，雨水箅子是采用平箅式还是边沟式，雨水管径最大采用多大等)。
2、收集资料。需要收集的资料主要有电子版的地质地貌(地质即地勘资料，地貌即地形图)，设计区域的总规和各专业的详规，已建或已设计的管线资料，排出口河道水渠的位置标高(为了出水口标高的设置)，电子版的道路资料(道路竖向高程，红线等)。
3、设计前准备。阅读收集的资料，弄清设计区域的地质地貌(地势走向，现状河道沟渠，设计管道周围的建筑物、构筑物)；弄清楚详规和总规内容(排水管线与其他管线在平面上的位置关系，排水管线的走向，当地的污水量，暴雨强度，重现期，近期设计与远期规划的结合)。阅读资料时提取出来的注意事项在设计时应时刻谨记(最好记录圈点下来)。
4、设计过程。根据规划在道路的平面图上布置雨水管和污水管(雨水一般在西南侧，污水一般在东北侧)，并将已建或已设计管道标在平面上；调整雨水检查井和污水检查井的位置(由于道路雨水口的布置，所以雨水检查井的桩号和污水检查井的桩号应该是错开的。由于道路交叉口要布置雨水口，所以交叉口处必须有雨水检查井。由于交叉道路有支管的接入，所以交叉口处应布置接入支管或预留管的排水检查井)；布置预埋管(排水管道每隔一定距离布置一根预埋管

抚心自问 07-06 05:36

1、首先应熟悉图纸，了解施工现场情况。会同甲方、监理方、设计方进行图纸交底，结合图纸深入施工现场了解本工程的基本全貌,如管线总长度、管线走向、管材直径、检查井数量等,还有与工作面开挖有关的地形、地貌、地物等。
2、管道沟槽开挖时应根据开挖土质的差异,既要注意边坡放坡的科学合理性又要安全和经济。槽底土方不得超挖,对于超挖部分要仔细回填夯实,严禁槽底低洼处进水积水,严禁夯填中使用腐植土,垃圾土,淤泥等。
3、施工测量必须设置专人，保证及时准确无差错地完成。
4、管槽回填时必须根据回填的部位和施工条件选择合适的填料和压(夯)实机具。填料中的淤泥、树根、草皮及其腐植物既影响压实效果，又会在土中干缩、腐烂形成孔洞，这些材料均不可做为填料，以免引起沉陷。
5、管道施工中应注意管材及其接口处施工到位、闭水段端头封堵应严密，闭水试验应合格。否则会造成漏水现象。

拥抱最动人 07-06 05:45

您好，排水设计的特点是服从于道路设计、产成品寿命长、与公用管线的关系复杂。对规划的合理性、历史的延续性、地势的约束性、系统的完整性要求很高。与交通工程、公用管线及居民生活有着非常密切的关系。希望我的回答可以帮助到您。

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