川西高海拔地区冬季寒冷,路面冰雪问题严重威胁行车安全。而川西丰富的地热资源给解决路面冰雪问题提供了清洁高效的新方法。以海拔高度4 200 m的雀儿山隧道为例,通过数年监测明确了区域气象与温泉温度变化规律,进而研究了PVC与不锈钢管两种管道引入温泉融化路面冰雪效果及其对路面强度影响。结果表明:与间距24 cm布置的PVC管相比,间距40 cm的不锈钢管试验段路面冰雪融化时间降低了47%,保障了路面在30 h降下12 cm雪的环境中无积雪。与原路面相比,加入不锈钢管后抗压与抗折强度分别提高了 12.7%和11.3%,提高了路面的承载能力。研究成果对于高原和高纬度地区利用温泉消除道路冰雪具有借鉴意义。
Abstract
The west of Sichuan with high altitude gets cold weather in winter. The snow and ice problem on the road is a serious threat to traffic safety, while the abundant geothermal resources in the west of Sichuan provide a new method to solve the problem of snow and ice on road surface. Taking the Queershan tunnel with altitude 4,200m as an example, regional meteorological and hot spring temperature change rules were determined through years of monitoring. Then the effect of melting snow and road surface strength of PVC and stainless steel pipes with hot springs were analyzed. The results show that comparing with PVC pipes with spacing of 24 cm, the melting time of snow and ice on the road surface in the test section of stainless steel pipes with spacing of 40 cm is reduced by 47%, effectively melting snow and ice on the road surface in winter. It ensures no snow on the road in the environment of 12 cm snow falling in 30 h. Compared with the original pavement, the compressive strength and flexural strength of the stainless steel tube increase by 12.7% and 11.3%, respectively, and the bearing capacity of the pavement is improved. The results can be used for reference to eliminate road snow and ice by hot springs in high altitude areas.
关键词
温泉热能 /
路面冰雪 /
管道布置 /
抗折强度 /
抗压强度
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Key words
hot spring heat /
snow and ice on roads /
pipeline layout /
bending strength /
compressive strength
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中图分类号：
U458.1
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脚注
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基金
国家自然科学基金(51804261);四川省交通运输科技项目(2016B2-4)
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