XJJ146-2022······1

1 總則······6

2 術語與符號······7

2.1 術語······7

2.2 符號······9

3 基本規定······13

4 管道、管件及附件······15

4.1 一般規定······15

4.2 工作管······15

4.3 保溫層與外護管······18

4.4 連接管件······19

5 管道布置與敷設······22

5.1 管道布置······22

5.2 管道敷設······24

5.3 管道連接方式······24

5.4 管道附件與設施······25

5.5 管道保溫計算······26

5.6 管道水力計算······27

6 固定墩設計······29

6.1 管道對固定墩的作用······29

6.2 回填土對固定墩的作用······29

6.3 固定墩應力驗算······31

7 管道應力驗算······34

7.1 柔性連接管道應力驗算······34

7.2 柔性-剛性混合連接管道應力驗算······37

7.3 熱伸長計算······40

8 管道安裝······42

8.1 一般規定······42

8.2 溝槽開挖······43

8.3 管道安裝與檢驗······45

8.4 接口保溫······48

8.5 溝槽回填······50

9 試驗、清洗、試運行、驗收······52

9.1 試驗與清洗······52

9.2 試運行······55

9.3 驗收······56

10 維護與檢修······57

附錄A 球墨鑄鐵管性能表······60

附錄B K級球墨鑄鐵管壁厚和工作壓力······61

附錄C 密封橡膠圈性能表······63

附錄D 新疆主要城市地溫月平均值······64

附錄E 固定墩、固定支架承受的推力計算······69

本規程用詞說明······71

引用標準名錄······72