英文篇名
JACKING PIPE MATERIAL PROPERTIES AND TEST METHODS
作者
謝啟萬、黃健誌
關鍵字
推進工法、小管推進、材料特性、檢驗法
摘要
目前推進管之適用管徑範圍由250至3000mm,施工時由發進坑內以推進機直接推動安裝管線,並可配合雷射光束導引系統維持推進方向及高程。目前我國常採用之剛性推進管以混凝土管(JRCP)為主,瓷化黏土管(VCP)聚酯樹脂混凝土管(PRCP), 300mm及400mm PVCP及ABSP亦廣泛用於推進施工中。管材於設計過程中需考量其抗壓性、耐腐蝕性、水力特性、耐磨損性、耐久性、接頭水密性、施工便易性、供應性、管件齊全性,與其售價。管材標準應明確規範外觀、尺度、管材平整度、直角偏差度等查驗標準,而管材抗壓、抗化性、接頭水密性亦為需執行之查驗項目,對撓性管而言,耐磨損性、耐久性亦不可忽視,給水用管線耐水壓試驗、溶出試驗亦應檢核。
英文摘要
Pipe jacking and microtunnelling is a technology for construction of pipelines to close tolerances for line and grade. Typically, these methods can be used for placing pipes ranging from 250mm to 3000mm in diameter. The operation process consists of pushing the tunnelling machine into the earth by means of hydraulic jacks carefully mounted and aligned in the jacking shaft. Typical placed rigid pipes include concrete pipe, vitrified clay pipe, and polyester resin concrete pipe. 300 mm and 400 mm PVCP and ABSP are also used for microtunnelling installation. Compressive strength, chemical resistance, hydraulic properties, abrasive resistance, durability, joint water tightness, workmanship, availability, and costs are the major consideration items in the design process. The test items of standard test method should include appearance, dimensions, straightness, roundness, compressive strength, chemical resistance, and joint water tightness. For flexible pipes, abrasive resistance and durability are also important test items. Pressure test and solvability test should be also checked for drinking water pipes.