水平定向钻穿越PE管最大允许回拖长度探讨OA
Discussion on Maximum Allowable Pullback Length of PE Pipes in Horizontal Directional Drilling Crossing
讨论了定向钻穿越PE管最大允许拖拉力、最大允许回拖长度的计算.在CJJ 63-2018《聚乙烯燃气管道工程技术标准》最大允许拖拉力计算式基础上,提出新公式进行计算.PE管公称外径小于或等于110 mm时,最大允许回拖长度小于300 m;公称外径大于或等于160 mm时,最大允许回拖长度超过300 m.PE管最大允许回拖长度与PE管公称外径有关,公称外径越大最大允许回拖长度越大.
The calculation of the maximum allowable pullback force and the maximum allowable pullback length of PE pipes in horizontal directional drilling(HDD)crossing is discussed.Based on the calculation formula for maximum allowable pullback force speci-fied in Technical Standard for Polyethylene(PE)Gas-eous Fuel Pipeline Engineering(CJJ 63-2018),a re-vised calculation formula is proposed.When the nomi-nal outer diameter of a PE pipe is less than or equal to 110 mm,the maximum allowable pullback length is less than 300 m;when it is greater than or equal to 160 mm,the length exceeds 300 m.The maximum allow-able pullback length of PE pipes increases with their nominal outer diameter.
钟立;张宪文
佛山市华禅能燃气设计有限公司,广东 佛山 528000佛山市华禅能燃气设计有限公司,广东 佛山 528000
建筑与水利
水平定向钻穿越最大允许拖拉力最大允许回拖长度
horizontal directional drillingmaximum al-lowable pullback forcemaximum allowable pullback length
《煤气与热力》 2026 (4)
52-53,2
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