G6高速呼集段路溫變化特征及結冰影響研究

doi:10.12306/2023jms.0067

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G6高速呼集段路溫變化特征及結冰影響研究
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                        10.12306/2023jms.0067
                    
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中圖分類號:U492.8
基金項目:江蘇省氣象局"北極閣"開放研究基金(BJG202207);內蒙古自治區(qū)科技計劃資助項目(2022YFSH0115);內蒙古自治區(qū)自然科學基金資助項目(2024MS04030)

Study on the section from Hohhot to Jining of G6 expressway for the characteristics of road temperature variation and icing effect

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利用近10 a G6京藏高速沿線自動氣象站與交通氣象站逐時觀測資料,分析G6呼和浩特—卓資縣—集寧區(qū)段(簡稱G6呼集段)道路結冰的時空特征及影響因子的變化規(guī)律。結果表明:10—次年4月為G6呼集段道路結冰易發(fā)期,通過分析"冰點"溫度變化,G6呼集段呼和浩特至集寧方向路面溫度(簡稱路溫)和氣溫呈先陡降再緩升的U型特征,卓資段為U型底部,呼市至卓資、集寧段結冰日數(shù)呈現(xiàn)"少、多、少"分布,卓資段最先達到結冰氣象條件。降雪、積雪是引發(fā)該路段道路結冰的主要誘因,年均40次,占比89%,降雪結冰主要發(fā)生于11至次年3月,傍晚至凌晨為結冰高發(fā)時段,結冰過程持續(xù)5~30 h;積雪結冰的特點是時間短,冰面淺薄。降水和高濕引起的道路結冰年均不到5 d,占比11%,主要發(fā)生于秋冬、冬春交替夜晚。日最低氣溫主要集中于06—07時,白天路溫高于氣溫,兩者變化趨勢一致,其溫差從日出至日落呈先增后減,夜晚氣溫略高于路溫,溫差穩(wěn)定。通過路溫和氣溫的變化關系總結出不同區(qū)段、時期的溫差公式,利用高分辨率氣溫數(shù)據(jù)實現(xiàn)路溫精準監(jiān)測,達到及時預警的目的。

Abstract:

Based on the hourly observation data of the automatic weather station and traffic weather station along the G6 Beijing-Tibet Expressway in the past ten years, the temporal and spatial change characteristics of road icing and the change law of impact factors in the section of G6 Hohhot-Zhuozi County-Jining were analyzed. Results show that the road icing prone period is from October to April in the next year, and the "freezing point" temperature change of G6 Hoji section was analyzed. The road surface temperature and air temperature in the direction from Hohhot to Jining in G6 Hohhot section show a U-shaped feature of first steep drop and then slow rise. The Zhuozi section has a U-shaped bottom. The number of icing days in Hohhot to Zhuozi and Jining sections shows a "less, more and less" distribution. The Zhuozi section first reaches the icing meteorological conditions. Snow and snow cover are the main inducements of road icing in this section, with an average of 40 times a year, accounting for about 89%. Snow and ice mainly occur from November to March, and from the evening to the early morning of the next day is the period of high incidence of ice. The ice process lasts about 5-30 hours. Snow and ice are characterized by short time and shallow ice surface. The road icing caused by rainfall and high humidity is less than 5 days per year, accounting for about 11%, and mainly occurs in autumn and winter, winter and spring alternate nights. The daily minimum temperature is mainly concentrated at 06∶00 BST to 07∶00 BST. The road temperature is higher than the temperature in the daytime, and the change trend is the same. The temperature difference increases first and then decreases from sunrise to sunset, and the temperature at night is slightly higher than the road temperature, and the temperature difference is stable. The temperature difference formula of different sections and periods is summarized through the change relationship of road temperature and temperature. High-resolution temperature data is used to achieve accurate monitoring of road temperature and achieve the purpose of timely warning.

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郝玉珠,朱承瑛,石嵐,賈曉紅. G6高速呼集段路溫變化特征及結冰影響研究.氣象科學,2025,45(2):276-283 HAO Yuzhu, ZHU Chengying, SHI Lan, JIA Xiaohong. Study on the section from Hohhot to Jining of G6 expressway for the characteristics of road temperature variation and icing effect. Journal of the Meteorological Sciences,2025,45(2):276-283

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收稿日期:2023-03-20
最后修改日期:2023-09-06
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在線發(fā)布日期: 2025-07-03
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