摘要:The tailings dam is indispensable facilities of the mine enterprises. Laying tailings dam backwater pipelines in mountainous area had the characteristics of complex terrain , ups and downs elevation , and long dis-tance.The discussion from the several aspects of line selection , pipeline laying , pipeline material selection , pipe fittings, pipeline anticorrosion , and pipeline buttress etc.in the engineering project of long -distance tail-ings dam backwater transport in mountainous area was carried out , and the applications of these design principles in the project cases were expounded.%尾矿库是矿山企业不可或缺的重要设施。在山区敷设的尾矿库回水输送管线具有地形复杂、高差起伏大、距离长的特点。该文就山区长距离尾矿库回水输送工程中线路选择、管道敷设、管材选择、管道附件、管道防腐、管道支墩几个方面的设计进行探讨,并阐述了这些设计原则在工程实例中的应用。