Permafrost and geotechnical investigations in Nalaikh Depression of Mongolia

来源 :Sciences in Cold and Arid Regions | 被引量 : 0次 | 上传用户:pgqing
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Mongolia is a land-locked country in Central Asia, located between Russia and China. The country’s high altitude results in cold, dry, and harsh climatic conditions with permafrost being widespread through the territory. Although the capital city Ulaanbaatar is situated in an area with discontinuous permafrost, the downtown section has recently seen a disappearance of permafrost due to an underground central heating system. During the last decade, expansion of the suburbs toward the Nalaikh Depression has resulted in construction of a new residential complex(Urgakh Naran), construction materials trading center, cement factory and agricultural products market. In the next 10 years, projects such as a university campus, logistics center, residential complex, railway and highway extensions connecting Russia and China have been planned. Engineering-geological and geotechnical investigations have been conducted for these construction projects. This paper presents some of the results determining the engineering geocryological conditions of Nalaikh district and offers foundation design options.
其他文献
这室内外的“最后一米”问题解决了,新手司机不再会开错车道,路盲不再会进错店门。  全球定位系统GPS的定位能够“精确”到几米?对于民用GPS而言,最好的定位精度也不过3-5米。而我们的北斗卫星导航系统呢?不仅实现了复杂环境下单点定位精度优于0.8米,动态RTK定位精度优于5厘米,还可实现室内定位精度优于1米的高超技术。这室内外的“最后一米”问题解决了,新手司机不再会开错车道,路盲不再会进错店门。 
我大胆地提出一个想法,万物是不是都有格?rn何为格?rn其最初的含义是长长的树木枝条,在此基础上,其含义开始有两个分化方向.第一种是这些枝条相互交叉,互不融合,于是有格格不
期刊
初中体育是学生综合素质全面提高的前提,也是终身体育的基础。所以,为了提高学生的身体素质,培养学生终身体育的意识,更为了确保体育课程价值最大化实现,素质教育下,要认真贯
期刊
劳动课的第一特性就是实践性强,没有实践或实践得不够,都不能体现劳动课的最大特点。如果单靠劳技课的时间去实践是远远不够的。我们要充分利用一切可以实践的机会。而实践的园地就要我们从身边的地方去寻找和利用,班级和学校是学生学习生活的重要场所,也就是学生实践的首选地方。  一、抓住各种重大节日的契机,让学生设计各类卡片  如,学校倡导书香满校园活动,我让学生设计和制作了书签、书卡等,并做成展板,供大家学习