内光外波纹双壁聚氯乙烯管的应用研究

研究生产质优价廉,施工方便的管材,对低压管道输水灌溉的发展极为重要。本文所研制的内光外波纹双壁聚氯乙烯管结构合理,物理力学性能良好。经多项性能试验,结果表明,过水能力与普通光滑硬塑料管基本一致;爆破压力达1.3～1.5MPa;扁平刚度0.36MPa,与国标管相近,约为薄壁管的4倍,在填土的外荷载作用下,其径向变形率为1.2％。双壁波纹管较国标管每米节省原材料52％,单价降低35％左右;较薄壁管每米也可节约原材料7.4～16.7％,是一种较理想的低压管道输水灌溉新型管材。

A Practical Study on Corrugated Polychloroethylene Pipes with Smooth Inner Wall Surface

Development and production of high quality, cheap, and easily constructed pipe material is very important to the development of low-pressure conduit system of irrigation.The corrugated polychloroethylene pipe with smooth inner wall surface described in this paper appears good physio-mechanic characteristics. Its water transmissibility is the same as that of ordinary smooth-surfaced hard plastic onesj its explosive pressure reaches 1.3-1.5MPa and its flat rigidity 0.36 MPa,nearthat of national-standard pipes and is four times that of thin-walled ones.Under the load of covered earth, its diametral deformability is 1.2%. Each metre of this double-surfaced corrugated pipe can save 52% of material comparing with that of national standard pipes,and is about 65% of its cost.It can save 7.4-16.7% of material comparing with that of thin-walled*pipes.It is an ideal pipe material for low-pressure conduit system of irrigation.