Taking Zhuhai connection-line pipeline transformation engineering of Gangzhu’ao bridge as an example,the paper analyzes the pipe-line transformation project features,points and difficulties,and formulates the project launching technology scheme,and finally summarizes mat-ters needing attention in the project design process from aspects of design conditions and existing pipeline protection,so as to guarantee the project construction smooth.%以港珠澳大桥珠海连接线管线迁改工程为例，分析了该管线迁改项目的特点、重点及难点，并制定了项目开展的技术方案，从设计条件、既有管线保护等方面，总结了项目设计过程中的注意事项，从而确保了项目建设的顺利实施。
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