介绍了苏丹黑格里格油田至苏丹港长输原油管道沿线自然概况,研究了管道沿线膨胀土的分布规律及工程特性,给出了塑性指数、体积变化、膨胀压力和膨胀潜势的关系及苏丹管道膨胀土的主要物理力学性质指标统计结果,指出要充分认识膨胀土对管道的潜在危害性,并提出了具体设计和施工措施。 The natural profiles along the long-distance crude oil pipeline from Sudan Heiglig oil field to Sudan port are introduced. The distribution law and engineering characteristics of expansive soil along the pipeline are introduced. The relationship between plasticity index, volume change, expansion pressure and swelling potential is also given. Sudan pipeline expansive soil main physical and mechanical properties of the index statistics, pointed out that we should fully understand the potential hazard of expansive soil on the pipeline, and put forward specific design and construction measures.