球墨鑄鐵管給排水施工方案

1、球墨鑄鐵管給排水施工球墨鑄鐵管給排水施工目錄第一章、土方工程............................................................................................................................5一、開挖管溝...........................................................

2、.................................................................5二、管基土加固........................................................................................................................9第二章、管道安裝..................

3、........................................................................................................10一、安裝程序；...........................................................................................................

4、...........10二、T型管安裝要點：...........................................................................................................10三、K型機械接口管安裝要點：..........................................................................

5、.................14四、PE管套安裝.....................................................................................................................22第三章：管溝回填..................................................................

6、........................................................23第四章：附屬構筑物......................................................................................................................24一、管件、固定臺.........................

7、.........................................................................................24二、閥門井室..........................................................................................................................2

8、5第五章、試壓驗收..........................................................................................................................25一、試壓標準.................................................................................

9、.........................................25二、管道水壓試壓前應符合下列規(guī)定：..............................................................................26三、大于DN1400MMM以上管道接口單口試壓.........................................................

10、.............26第六章、注水沖洗消毒..................................................................................................................27第七章、注意事項.......................................................................

11、...................................................28第八章、損壞修復..........................................................................................................................30第3頁共30頁3土質良好地方T型管溝：砂墊層高度A注：（1）埋深度北方

12、地區(qū)應大于在當地凍土層以下；（2）快速道、重載車輛較多的埋深管子地方，按設計管道內壓及外壓的1.52倍安全系數考慮深度，但絕對不能小于⒈2米埋深度；（3）h’為砂墊層厚度；表一（T型管數據）口徑A(mm)B(mm)H(mm)h’(mm)807605001200200100800550120020015085058012002002008806001200200250890600120020030090060012002003501010