关键词: 兰新铁路, 铁路沙害, 戈壁风沙流, 沙害治理

Abstract: The Lanzhou-Xinjiang railway stretches a length of 1050 km in gobi region and frequently suffers from wind-sand stream hazards,especially in the 30-km section between Xiangyanghe and reclaimed areain yumen of Gansu province.The major reason is that the distruction of ground surface during the construction of railway in gobi region exposed tne umderlying sand source to wind erosion and causes wind-sand flow hazards to the railway.In the past twenty tears such protective measures as "with forest as sandbreak","blocking the sand outside the forest and removing sand nearby the railway" have been adopted and achieved great successes.