冰川冻土 ›› 2022, Vol. 44 ›› Issue (3): 998-1010.doi: 10.7522/j.issn.1000-0240.2022.0094
庞小冲1(), 朱小明1, 穆彦虎2,3(
), 张坤4, 张力杰2,3, 郑波5, 李凌洁2,3
收稿日期:
2022-05-05
修回日期:
2022-06-14
出版日期:
2022-06-25
发布日期:
2022-08-27
通讯作者:
穆彦虎
E-mail:123994397@qq.com;muyanhu@lzb.ac.cn
作者简介:
庞小冲,高级工程师,主要从事隧道与岩土工程研究. E-mail: 123994397@qq.com
基金资助:
Xiaochong PANG1(), Xiaoming ZHU1, Yanhu MU2,3(
), Kun ZHANG4, Lijie ZHANG2,3, Bo ZHENG5, Lingjie LI2,3
Received:
2022-05-05
Revised:
2022-06-14
Online:
2022-06-25
Published:
2022-08-27
Contact:
Yanhu MU
E-mail:123994397@qq.com;muyanhu@lzb.ac.cn
摘要:
保温法是目前寒区隧道建设中应用最为广泛的一种冻害防治方法。通过敷设保温材料可以减缓隧道结构、围岩体与洞内空气的热量交换过程,进而减小或避免衬砌与围岩体内的季节冻融,实现冻害防治的目的。在工程设计中,隧道保温段的敷设长度和厚度是两个关键参数,其中敷设厚度相对容易确定,但是敷设长度的确定目前缺乏统一的标准和简便可靠的方法,给隧道保温设计带来了一定的难度和不确定性。基于此,对包括现有铁路和公路规范要求、经验公式、工程类比法、理论解析法、数值模拟法等寒区隧道保温段敷设长度确定方面的工程实践、研究进展和挑战进行了系统的总结,并在此基础上提出保温设防设计用气象数据的选取方法、保温设防长度确定的依据、隧道进出口的差异性,以及季节冻土与多年冻土区隧道的差异等未来工程实践和科学研究仍需解决和研究的重点,以期能够为寒区隧道保温防冻工程设计难题的解决提供参考。
中图分类号:
庞小冲, 朱小明, 穆彦虎, 张坤, 张力杰, 郑波, 李凌洁. 寒区隧道保温设防长度工程实践与研究进展综述[J]. 冰川冻土, 2022, 44(3): 998-1010.
Xiaochong PANG, Xiaoming ZHU, Yanhu MU, Kun ZHANG, Lijie ZHANG, Bo ZHENG, Lingjie LI. Review on engineering practice and research progress on thermal insulation length of tunnels in cold regions[J]. Journal of Glaciology and Geocryology, 2022, 44(3): 998-1010.
表3
川西高原隧道洞口保温层设防长度建议值[10] (m)"
最冷月平均气温/℃ | 最冷月洞口最大风速/(m·s-1) | ||||||||
---|---|---|---|---|---|---|---|---|---|
≤0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
0 | 200 | 90 | 200 | 310 | 420 | 540 | 660 | 790 | 920 |
-1 | 200 | 290 | 400 | 510 | 620 | 740 | 860 | 990 | 1 120 |
-2 | 200 | 290 | 400 | 510 | 620 | 740 | 860 | 990 | 1 120 |
-3 | 300 | 390 | 500 | 610 | 720 | 840 | 960 | 1 090 | 1 120 |
-4 | 300 | 390 | 500 | 610 | 720 | 840 | 960 | 1 090 | 1 120 |
-5 | 400 | 490 | 600 | 710 | 820 | 940 | 1 060 | 1 190 | 1 320 |
-6 | 400 | 490 | 600 | 710 | 820 | 940 | 1 060 | 1 190 | 1 320 |
-7 | 400 | 490 | 600 | 710 | 820 | 940 | 1 060 | 1 190 | 1 320 |
-8 | 500 | 590 | 700 | 810 | 920 | 1 040 | 1 160 | 1 290 | 1 420 |
-9 | 500 | 590 | 700 | 810 | 920 | 1 040 | 1 160 | 1 290 | 1 420 |
-10 | 500 | 590 | 700 | 810 | 920 | 1 040 | 1 160 | 1 290 | 1 420 |
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