地理学报 ›› 1988, Vol. 43 ›› Issue (3): 265-273.doi: 10.11821/xb198803009

• 论文 • 上一篇    下一篇

路堑和隧道风雪流的风洞模拟实验研究

王中隆1, 潘遐华1, 刘贤万2   

  1. 1. 中国科学院兰州冰川冻土研究所
    ;2. 中国科学院兰州沙漠研究所
  • 出版日期:1988-07-15 发布日期:1988-07-15

SIMULATION RESEARCH OF SNOW DRIFT ON THE CUT AND TUNNEL IN WIND-TUNNEL

Wang Zhonglong1, Pan Xiahua1, Liu Xiawan2   

  1. 1. Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences;
    2. Lanzhou Institute of Desert, Chinese Academy of Sciences
  • Online:1988-07-15 Published:1988-07-15

摘要: 本文总结了风雪流模拟实验应遵循的相似准则,以及在属于自模区风洞中的实验结果。给出了各种风向以及路堑、隧道两头路基型式和长短不同等条件下,它们的积雪与流场结构特征,附面层分离和雪粒堆积的关系,找出了相应防治雪害的措施,为今后研究路堑、隧道积雪机理及其防治提供必要的依据。

关键词: 风雪流, 相似准则, 自模区, 流场结构, 附面层分离

Abstract: It is a quicker, better and more economial way to research snow drift and its control by modelling experiments in the wind-tunnel. The exact similitude is required for performing modelling test. This paper summarizes the similarity criteria and 10 parameters, as well as results got from the test in wind-tunnel of self-sumulation.Accumulation of snow drift occurs in boundary layer separation areas where the eddy resistance increases rapidly. In the case of roads, different fields of flow on different land-forms near the roadbed may give rise to different processes and quantities of drifting snow. Structure of flow fields and drift accumulation on cut and tunnel are rather complicated, so their snow control is more difficult than on other roadbeds. This paper reports the methods and problems in need of special attention, which is helpful in choosing courses, roadbed design and prevention of drifting snow in places with cut and tunnel.