论文部分内容阅读
我国天山西部,每年二月份,经常发生新雪雪崩,而且新雪的容重也较小,一般为0.35～0.60g/cm~3,具有粉质雪的特点。因此,在我国开展粉质雪崩的理论研究和预测也是实际非常需要的。国外在这方面不仅从理论上加以研究,而且还开展了模拟实验。了解国外有关研究情况,对于提高我国雪崩研究水平,开拓研究思路是大有裨益的。法国空气动力研究中心和格勃力学研究所对粉质雪崩进行了研究,给出了该现象的理论解释,并进行了模拟实验。实验中的粉质雪崩现象当作沿坡下滑的湍流“浮云”,采用的是
New snow avalanches often occur in the western Tianshan Mountains in February every year, and the bulk density of new snow is also small, generally 0.35 ~ 0.60g / cm ~ 3, with the characteristics of silty snow. Therefore, in our country to carry out theoretical studies and forecast silty avalanche is actually very much needed. In this respect, foreign countries not only study in theory, but also carry out simulation experiments. Understanding the relevant research situation abroad is of great benefit to improving the research level of avalanches in China and exploring research ideas. The French Aerodynamic Research Center and the Gebst Institute of Mechanics have studied the avalanche of the powder, given the theoretical explanation of the phenomenon and carried out the simulation experiments. In the experiment, the phenomenon of silty avalanche was taken as the “cloud” of turbulence that slipped along the slope, and was adopted