The general characteristics of the grain - size distribution of different sedimentary facies , es pecially the variations of the parameters mz ( mean particle diameter ) and o ( standard deviation ) clearly show that the fluvio - lacustrine facies and palaeosols usually become finer in particles and worse in sorting than the aeolian sands 该剖面不同沉积相粒度的一般分布特征尤其是粒度参数? mz 、的变化明显表现出，河湖相或古土壤通常要较风成砂颗粒细化，分选相对较差。
This paper , based on the grain - size analysis and the comparative result of the mz - o scatter gram of ancient aeolian sands in milanggouwan section with the modern dunes in mu us desert , holds that fossil eolian dunes are a proxy of the dune activation , and be regarded as " desert process " , while the overlying fluvio - lacustrine and palaeosols on the dunes are regarded as inter - desert process 文中根据粒度分析及古今砂丘的mz ?散点图比较结果，认为古代风成砂丘特别是古流动砂丘是砂丘活化的体现，视为“沙漠期” ，而砂丘上覆的河湖相沉积与古土壤发育则可视为“间沙漠期” 。
Grain - size accumulation percentage of the aeolian sands in the past 150 ka in milanggouwan section is mainly characterized by the aeolian palaeo - mobile dune sands , which are composed of majority fine sands and minority very fine sands . there is n ' t almost any silt and clay . those of the fluvial facies , especially the lacustrine facies and palaeosols , are mainly composed of very fine sands and also contain some quantities of silt and clay 米浪沟湾剖面150kabp以来风成砂的粒度累积百分含量以古流动砂丘砂物质为主，其中以细砂含量最高，极细砂为次，几乎不含粉砂与粘土；河流相、特别是湖沼相与古土壤以极细砂含量占优势，且具一定含量的粉砂和粘土。
On systematic analysis of engineering property of the aeolian sand , we choose cement stabilized aeolian sand , cement stabilized mixture of aeolian sand and soil , lime - fly ash stabilized aeolian sand , lime stabilized mixture of aeolian sand and soil and lime - cement stabilized mixture of aeolian sand and soil as object of research . on the base of the determination and analysis of temperature contraction property , aridity resistance property and strength of the stabilized aeolian sand mixture , this paper mainly analyses influential factors and inherent law of property about the stabilized aeolian sand mixture , and provides scientific foundation for the using of aeolian sand as paving material 本文在系统分析风积沙工程特性的前提下，以水泥稳定风积沙、水泥稳定混合沙土、石灰稳定混合沙土、石灰粉煤灰稳定风积沙和水泥石灰稳定混合沙土作为底基层材料研究对象，在对其温缩、干缩以及强度和模量等性能指标的测试、分析的基础上，研究分析了这些稳定风积沙混合料各性能的影响因素和内在规律，为风积沙用作沙漠地区公路路面材料提供了科学依据。
In order to measure the optimum combination of exciting force and frequency of sand sample with different moisture content and degree of compaction , the machine of mts fatigue test is used to simulate vibrating roller , the optimum combination measured can provide reference to study interacting of vibrating roller and aeolian sand 用mts疲劳试验机模拟振动压路机，测出不同含水量和压实度下的激振力和频率的最佳最合，为研究振动压路机和风积沙的相互作用提供参考依据。
