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- Results of these tests furnisha scientific basis for the use of eolian sand in engineering projects. 该试验结果将对风积砂的工程应用提供了一定的理论依据。
- More than 100 ESRdating experiments on the coastal eolian sand showed that most of their ESR agesare 10-70ka. 1992-1993年在渤、黄、东、南海沿岸采集的100余个风成沙样品ESR测年实验表明,绝大部分海岸风成沙的年龄为1-7万年。
- It has recommended suitable sampling grain size possible to get rid of eolian sand. 推荐消除风成沙影响的合理采样粒级;
- In West China,there is a great abundance of eolian sand in vest expanses of desert. 我国西部地区沙漠分布广泛,富产风积砂。
- The eastern part of Changle and Haitan Island are the two major eolian sand regions in Fujiau Province. 长乐东部和海坛岛是福建省的主要风沙分布区,风成沙是重要的自然资源。
- The engineering properties and the practically properties of eolian sand are summed up systemically. 系统总结了兵团垦区风积沙垫层施工适用的机械及组合;
- Quartz and feldspar are the main components in the eolian sand, but there is some proximal lithoclast in the coarse grain. 风成沙中主要颗粒成分为石英长石,但偏粗粒级混有一定比例近源岩屑;
- Occasionally,when mining area occurs in the source area of eolian sand,the indicator element content obviously increases. Hg则从粗向细粒级含量逐渐增高,中间变化很小。 但在风成沙来源地有矿区存在时,则出现相应元素的明显升高。
- In addition,tests are made for the analysis of the character of interface friction between eolian sand and geogrids,which offers a good help for. 本文还通过试验分析了风积砂与土工格栅的界面摩擦特性,为风积砂在加筋工程中的应用提供了一定的依据。
- Desertification and Eolian Sand Physics: main focuses are eolian sand physics and wind-erodion mechanism of soil, desertification processes, land deserttification controlling. 沙漠化与风沙物理:主要方向有风沙物理与土壤风蚀;沙漠化过程;沙漠化治理。
- CHEN Zhong-da,LI Wan-peng.Vibratory Parameters and Vibratory Compacting Mechanism of Eolian Sand[J].Journal of Chang'an University:Natural Science Edition,2007,27 (1):1-6. [2]陈忠达;李万鹏.;风积沙振动参数及振动压实机理[J]
- Based on the analysis of compaction property about eolian sand,this paper makes an approach to the influential mechanism of water content on eolian sand compaction. 在对风积沙压实特性进行分析的基础上,探讨了含水量对风积沙压实影响的机理。
- Desertification and Eolian Sand Physics: main focuses are eolian sand physics and wind-erodion mechanism of soil, desertification processes,land deserttification controlling. 4. 沙漠化治理。4.;高原大气物理研究:主要方向有高原气候与环境动力学;
- Western Kunlun area locates in the area of eolian sand accumulation in China, and the granularity of eolian sand is smaller than that of the other areas. 摘要西昆仑地区地处中国风成沙的沉降区,与其它区相比较,风成沙粒级偏细。
- In the stream sediment, the content of elements appears obvious difference at the boundary line of 80-mesh granularity, and the content of elements (-80 mesh) is obviously disturbed by eolian sand. 水系沉积物中,元素含量以80目级为界出现明显差异,-80目粒级元素含量明显受到风成沙干扰。
- This paper presented the difference of eolian sand soil physico-chemi cal properties, soil microorganisms and soil enzymes between stabilised sand dun es and drifting sand dune and their deveolopment trend. 本文概述了人工植被下风沙土与流沙的理化性质、生物、壤酶的差异及其演变趋势。
- The results of comprehensive field investigation and some relative sample tests of strata containing eolian sand showed that the Otindag Sandy Land was formed as far as in the Later Tertiary Period at least. 根据较广泛的含风成砂地层的野外调查与有关室内样品分析结果,浑善达克沙地至少形成于晚第三纪。
- This paper analyses the types of eolian land forms and their distributional features, the compositional characteristics, approachs the exploition and utilization of eolian sand resources. 本文分析了风沙地貌类型及其分布特征、风成沙成分等,探讨了风沙资源的开发利用和保护等问题。
- In the double-deck eolian sand hillock located in the Northern Tibet, the trace element contents in the two layers have not obvious discrepancy except Hg element,which indicates the two layers probably come from the same source. 藏北双层风成沙丘中两层沙子各粒级中元素含量没有明显差异(Hg除外); 推测两次堆积的风成沙来源地是一致的。
- The grain feature of the eolian sand is that the main grain section appears in 60 meshes with a high proportion of 85%,and the shortage grain section in -10~+20 meshes in most area. 大部分地区的风成沙中缺失-2~+0.;9mm粒级段;优势粒级出现在-0