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首页> 外文会议>Annual technical conference of the North American Society for Trenchless Technology 2008 >ROOT CONTROL: A STUDY IN PLANNING, PERFORMANCE, AND PATIENCE
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ROOT CONTROL: A STUDY IN PLANNING, PERFORMANCE, AND PATIENCE

机译：根控制：在计划，性能和耐心方面的研究

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The Austin Water Utility (Austin, Texas) has long considered root intrusion in wastewater pipes a nuisance and a primary source of sanitary sewer overflows. As roots emerge from breaks and cracks in wastewater pipes they flourish due to the nature of the nutrient rich wastewater flows. Consequently, root masses are formed within the pipes, which act as plugs that can instantaneously cause upstream wastewater overflows. The Austin Water Utility has typically relied on traditional methods for root control. In general, the Utility has utilized root saws for most root removal, but has struggled with the associated drawbacks such as pipe damage and saw wedging. Alternative root removal methods, such as chemical applications, have been previously proposed but were never studied due to public resistance. The City of Austin's Clean Water Program was created in 1999 as a response to an Administrative Order levied by the Environmental Protection Agency on the City. Its charge is to eliminate the occurrence of all wastewater overflows by June 2009 or pay penalties per overflow event. In 2003, in an effort to increase the number of maintenance options available to the Utility, the Austin Clean Water Program created the Root Control Pilot Program in order to demonstrate both the safety and effectiveness of a contact herbicide, Diquat Dibromide, on intruding roots. This paper describes the numerous tasks, both technical and administrative, involved with the implementation of the Pilot Program, as well as the execution of the program, its results, and final conclusions.
机译：奥斯汀水务公司（德克萨斯州奥斯汀）长期以来一直认为废水管道中的根部侵入是令人讨厌的事情，并且是下水道溢水的主要来源。当根源从废水管的破裂和裂缝中出现时，由于营养丰富的废水流的性质，它们蓬勃发展。因此，在管道内形成了根团，这些根团起了塞子的作用，可立即引起上游废水的溢流。奥斯汀水务公司通常依靠传统方法进行根系控制。通常，该实用程序使用了根锯来去除大多数根，但一直在努力解决相关的缺陷，例如管道损坏和锯楔。先前已经提出了替代的根部去除方法，例如化学应用，但是由于公众的抵制而从未进行过研究。奥斯丁市的清洁水计划是1999年根据环境保护局对该市颁布的一项行政命令而制定的。其收费是在2009年6月之前消除所有废水溢出的发生，或对每次溢出事件支付罚款。为了增加公用事业公司可用的维护选项的数量，2003年，奥斯丁清洁水计划制定了根控制试点计划，以证明接触除草剂Diquat Dibromide对侵入根的安全性和有效性。本文介绍了试点计划的实施以及该计划的执行，结果和最终结论所涉及的许多技术和行政任务。

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