沙漠的沙粒物理特性分析

ANALYSE OF AEOLIAN SANDY PHYSICAL CHARACTERISTICS IN DESERT

以北京北郊的沙漠沙为研究对象,对其多种物理特性进行测量和分析,提取其中的流体力学和粉体力学特征,建立这些特性参数之间的横向联系,指出了圆度、粒径分布和平均粒径等形貌特征参数对于沙粒的颗粒间作用力效果的重要影响;用测量结果验证和解释了沙丘结构的一些现象和规律。

Taking Aeolian sand in north desert of Beijing for research object, this paper surveys and analyzes its physical properties, and then selects hydro mechanical and powder mechanical properties from them. This paper sets up the relations of all the selected parameters and goes deep into the influence these parameters (roundness, diameter distribution, average diameter) impose on the interactional force of Aeolian sand; Validate some phenomena exist in the desert dune.