格库铁路米兰戈壁区风沙危害成因及防护体系配置模式
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P931.3

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中国铁路总公司科技研究开发计划课题“新建格尔木至库尔勒铁路新疆段风沙路基防护工程治沙试验研究”(2017G004-E)


Aeolian sand hazards and sand-control system configuration mode in Milan Gobi area along Golmud-Korla railway
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    摘要:

    [目的] 探究格库铁路米兰戈壁段风沙危害成因,提出针对性的风沙防护体系配置模式。[方法] 本研究通过野外观测,分析区域风况,监测沿线输沙量,评价试验段防沙体系防护效益。[结果] ①格库铁路米兰戈壁区属高风能环境,主要起沙风向为NE和ENE,区域年输沙量介于2.15~3.45 m3/a。②戈壁之上流动性沙丘以中砂和细砂为主,而戈壁地表以下40 cm范围内沙粒以细砂为主,施工破坏后极易起沙成为新的沙源。③单道HDPE板、芦苇束和镀锌铁丝网阻沙障阻沙率依次为96.42%,93.85%和76.60%,而其双道阻沙率分别为97.95%,98.71%和92.78%,整个防护体系阻沙率均达到95%以上。④折线形阻沙沙障虽然积沙量大,但折角部位极易被积沙掩埋。[结论] 直线形HDPE板阻沙栅栏与芦苇束大网格阻固结合的防沙体系,是适宜于格库铁路米兰戈壁区的防沙体系配置模式。

    Abstract:

    [Objective] The causes of aeolian sand hazards in the Milan-Gobi section of the Golmud-Korla railway were investigated to propose a targeted configuration mode for sand-control systems. [Methods] This study analyzed regional wind conditions, monitored the amount of sand transported along the line, and assessed the protection efficiency of the test section of the protection system through field observations. [Results] ① The Milan Gobi area of the Golmud-Korla railway is a high wind energy environment; the main sand driving winds are NE and ENE, and the annual sand transport volume reaches 2.15~3.45 m3/a. ② The sand in Gobi mobile dunes is mainly medium- and fine-grained, whereas sand particles within 40 cm below the surface are mainly fine-grained. After construction damage sand is easily generated, creating a new sand source. ③ The sand resistance rates of the single HDPE plate, reed bundle, and galvanized chicken wire barrier were 96.42%, 93.85%, and 76.60%, respectively; the sand resistance rates of the double fences were 97.95%, 98.71%, and 92.78%, respectively. The sand resistance rate of the entire protection system exceeded 95%. The amount of sand deposited in the zigzag sand barrier was large, and the corner of the barrier was easily buried by sand deposits. [Conclusion] A sand control system that combines a linear HDPE board sand barrier with a large reed bundle grid is suitable for the sand control system configuration mode in the Milan Gobi area of the Golmud-Korla railway.

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彭晓川.格库铁路米兰戈壁区风沙危害成因及防护体系配置模式[J].水土保持通报,2025,45(2):91-101

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  • 收稿日期:2024-11-10
  • 最后修改日期:2025-01-01
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  • 在线发布日期: 2025-05-16
  • 出版日期: 2025-04-15