兰新线玉门段戈壁风沙流地区铁路沙害的治理

兰新铁路通过戈壁地区线路长达1050km,铁路营建后受到戈壁风沙流危害,兰铁玉门段向阳湖、垦场区间长约30公里,危害尤烈。产生的原因是戈壁铁路修建中,破坏地表使蕴藏的沙粒失去掩蔽,成为风沙的来源和加强风沙流活动,并在铁路上形成积沙。经二十多年努力,采取"以林养障(沙障)","林外截沙源,路内消积沙"的防护措施,取得了成效。

Sand Hazard Control Aling Yumen Section of Lanzhou Xinjiang Railway in Gobi Wind-sand Stream Region

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.