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PVC-UH管材適用于地下綜合管廊給水用
更新時間:2017/10/25 15:03:13  點擊量:0 

城市地下綜合管廊,是21世紀新型城市市政基礎設施現代化的重要標志。地下管廊的設計壽命為100年,在建設工程達到要求的前提下,管線的壽命無疑成為了決定管廊壽命最重要的條件。


綜合管廊中管道壽命如何能夠匹配管廊的設計壽命是目前應當探討的一個話題。目前的學術研究大多停留在如何建好管廊主體建設、管線如何劃艙的層面上,但對于管線壽命的討論卻鮮有耳聞。綜合管廊屬于封閉式結構,后期管道出現破損維修也會是很麻煩的一件事。如何確保管材具有較長的使用壽命是最先需要考慮的問題。現有地下管廊大部分以鋼管為主,在管道敷設進管廊之后要定期做防腐,但其本身材質限定了其20-30年的壽命,在管廊設計壽命100年的前提下,無疑不能滿足管廊運行百年的要求。在管道壽命臨近時,全面更換管材無疑將會是一筆很大的工程,在管廊投資難以看到回報的現狀下,如此大面積增加成本是投資方不愿意看到的。因此采用連接可靠,設計壽命長(100年)的塑料管材才是地下管廊應該著重考慮的。


在此背景下,住建部2016年頒發的行業標準CJ/T493-2016《給水用高性能硬聚氯乙烯管材及連接件》中明確指出,PVC-UH管材適用于管廊鋪設。該管材與現有管廊中鑄鐵管材、鋼制管材的焊接方式不同,PVC-UH管材采用的是鋼骨架一體成型的密封圈連接,管材采用承插方式,承口端的密封圈在管材擴口時就成型為一體,穩固不會松動。





地下管廊中管材的應用需要解決兩個問題:1、管材接口的密封性:不脫開、不泄露2、管材有穩固的外部支撐。在研發過程中,PVC-UH管材都將以上兩個問題進行了針對性解決。上文提到的獨特的連接結構,保證了連接的穩定。固定方式依舊可以沿用球墨鑄鐵或鋼制管道在管廊中的方式,打壓通水后并不會出現接口松動漏水的現象。此外,一項配合PVC-UH管材在管廊中應用的專利技術—“卡箍”也應運而生,此專利雖然具體的技術原理還未知曉,但其穩固管材接口的特性,無疑將會大大提高塑料管材在管廊中的普及和應用。


在地下管廊項目異軍突起的今天,保質保量的完成管廊建設任務并且正確的發揮管廊的實際作用,還需要各行各業的的共同努力,建筑的質量、科學的規劃、高質量的管線缺一不可。

版權所有© copyright 2017 金華市磐石廚衛科技有限公司 浙ICP備17045582號-1
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