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新建敦煌-格尔木铁路途经库姆塔格沙漠东部的沙山沟,沟内沙源非常丰富,高大沙丘广布,其风沙危害对铁路造成了严重威胁。本研究选择党河上游流动沙丘和黑山嘴流动沙丘两个具有代表性的高大沙丘区域,系统调查与观测了该区域高大沙丘土壤水分、植被、风沙环境和风沙危害,在掌握和分析两试验区环境特征的基础上,在党河上游流动沙丘区建立以工程措施为主的风沙防治试验示范区,在黑山嘴流动沙丘区建立工程与生物相结合的风沙防治试验示范区。研究旨在取得敦煌-格尔木铁路途经高大沙丘区风沙防护的相关工程经验,合理确定风沙防治措施,为铁路通过该区的风沙防护提供了理论依据和实践参考,对保证敦煌-格尔木铁路安全畅通运营具有重要意义。
New Dunhuang - Golmud Railway passing through the sand dunes in the eastern part of the Kumtag Desert has a very rich source of sand and a wide distribution of tall sand dunes. The harm caused by sandstorms has posed a serious threat to the railway. In this study, we selected two representative high-dune areas of the mobile sand dune in the upper reaches of the Danghe River and the mobile sand dune in the mouth of the Heishan Mound, and systematically investigated and observed the soil moisture, vegetation, wind-blown sand environment and sandstorm hazards in the tall sand dunes in the area. Based on the characteristics of the sandstorm area in the upper reaches of the Danghe River, a demonstration area for sandstorm prevention and control experiment mainly based on engineering measures was set up and a pilot area for sandstorm prevention and control experiment combining engineering with biology was established in the sand dune area of Montenegro. The purpose of this research is to obtain relevant engineering experience of sand dune protection in Dunhuang-Golmud Railway through the tall sand dune area, reasonably determine the sandstorm prevention and control measures, provide theoretical basis and practical reference for the sandstorm protection of the railway passing through the area, and guarantee the safe and smooth operation of Dunhuang-Golmud Railway It is of great significance.