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一、引言随着我们国家的改革开放,城市的现代化建设得到了飞速发展,城市给水管网的建设是市政工程中一项重要的先行基础工程,这项工程的投资巨大,一般要占到整个城市供水系统总投资的三分之二,工程建成后的运行费用和管理费用也是自来水公司日常支
I. INTRODUCTION With the reform and opening up in our country, the modernization of the city has witnessed rapid development. The construction of urban water supply network is an important first-line basic project in municipal engineering. The investment in this project is huge and generally accounts for the entire Two-thirds of the total investment in urban water supply system, operating costs and management costs after the completion of the project is also the daily branch of the water company