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江阴市供水管网事故回归模型的建立与分析 被引量:1

Building and analysis of Jiangyin water supply network accidental regression model
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摘要 管网事故是供水管网运营管理中面临的重要问题,研究管网事故的影响因素和内在规律,对于提高管网运营维护水平具有非常重要的意义。笔者以江阴市城区2007年至2009年供水管网抢修台帐为基础,考察管材、管龄和管径等管道内在属性与管网事故之间的关系。研究方法采用基于正态准极大似然估计的计数模型建立多元回归模型,并利用方差分析法评估各因素的权重,进而找出关键的影响因素。计算结果显示建立的回归模型具有较好的显著性。因素的重要性排序从大到小为管径、管材和管龄。其中小管径是管网事故最主要的因素,其在模型中的贡献率远超过管材和管龄,而铸铁管和大管龄也是引起事故的重要因素。球墨铸铁管对事故的贡献程度最小,是最不容易引起事故的因素。
出处 《制造业自动化》 北大核心 2011年第6期118-120,126,共4页 Manufacturing Automation
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