permafrost soil 中文意思是什麼

permafrost soil 解釋
永凍土壤
  • permafrost : n. 【地質學；地理學】永久凍土。
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  1. ( 1 ) modeling of numerical analysis of frozen soil ventiduct roadbed by ann ( 2 ) developing the ann optimization design system for ventiduct roadbed in permafrost area ( 3 ) defining of the sequel learning tactic of three layer bp network ( 4 ) improvement on bp arithmetic in ann module

    （ 2 ）開發了凍土通風管路基優化設計神經網路分析軟體系統具有完整的前後處理、溫度場分析、設計方案優化等功能，能滿足工程應用的基本需要。還能夠作為數值分析子模塊，以標準com組件形式嵌入「青藏鐵路數字路基」 gis系統。
  2. This article introduces the status quo of engineering and technology of foreign pipelines in permafrost regions, and puts forward the relative countermeasures for the construction of pipelines in the regions in allusion to the frost heaving and thaw settlement of country rock and soil along the pipeline route

    摘要介紹了國內外凍土地區管道工程技術現狀，針對凍土地區管道沿線和周圍（巖）土的凍脹和融沉問題，提出了相應的對策。
  3. A soil is classified as histosols if it does not have permafrost and is dominated by organic soil materials

    如果某種土壤沒有永凍層而又以有機物質為主則可以將其劃分為有機土。
  4. Results showed that the temperature distribution of the traditional embankment was asymmetrical ; the asymmetrical status was changed after ripped - rock revetment was installed and the soil under the ripped - rock was cooled obviously ; the ripped - rock revetment could cool embankment and adjust the temperature difference between the north - facing slope and the south - facing slope ; the ripped - rock revetment was an available technique to protect embankment from thawing settlement and longitudinal cracks in permafrost regions

    結果表明：普通路基的陰陽坡兩側溫度分佈極不對稱；鋪設拋石護坡后，這種狀況得到了很大改善，並且拋石護坡下土體溫度明顯降低；拋石護坡能夠降低路基溫度和調節路基陰陽坡的溫度差異；拋石護坡是多年凍土區防治路基融沉和縱向裂縫病害的一種可行措施。
  5. Thaw settlement cause negative friction. this paper base on the thought of " initiative cooling ", aim at three problems existing in common concrete pile used in frozen soil, a new type of pile is proposed to overcome the disadvantages of the classical pile used in frozen soil. pile body within active layer is fluted and refilled with porous materials such as gravels and ballasts, convection will be occur and then thermal exchange inside porous material in winter while only heat conduction exists in summer, as a result the soil around flutings will be cooled, so the top line of permafrost will be drive up

    本文基於「主動冷卻」地基的思想，以及針對凍土地區普通混凝土樁存在的三大問題，提出了一種新型樁的設計思路，運用數值模擬試驗手段對其冷卻機理與加固機理進行了系統研究，即在凍融活動層的深度范圍內，在混凝土樁身的表面刻槽，修築完時槽內填充碎石、塊石等多孔介質，通過外界大氣溫度的自然波動下多孔介質在冬季時存在的對流換熱機制，而在夏季只存在熱傳導，來達到主動冷卻樁周凍土和抬升凍土上限的目的。
  6. One of the most important one is the piles on the poor geological conditions such as saturated permafrost soil or underneath ice layers, such as : 1. frozen soil beside piles is thawed caused by construction and cement hydrate heat, it need quite time to recover freezing again ; 2. frost heaving sometimes pull up piles ; 3

    凍土地區樁基普遍存在著： 1由於施工、水泥水化等造成樁周凍土融化，需相當長時間內才能回凍； 2樁周凍土凍脹對樁的「冷拔」作用往往將樁拉斷； 3樁周凍土融沉引起負摩阻力。
  7. Discussion on buried seat of thermal insulation material for subgrade engineering in permafrost soil zone

    凍土地區路基工程中隔熱材料埋設位置的探討
  8. In permafrost areas, thaw - settlement problem is the main content for the frozen harmfulness study ; in the seasonally frozen soil areas, frozen expansion problem is considered most in order to prevent and father the frozen harmfulness for the groundwork, the thaw - settlement index is thought little relatively, but it has been investigated from the data of frozen harmfulness, the thaw - settlement behavior still has an active effect on the construction stability in the seasonally frozen soil areas

    在多年凍土區，融沉問題是凍害研究的主要內容;在季節凍土地區，為了防治地基凍害問題，考慮最多的往往是凍脹問題，對融沉指標一般考慮的比較少，但是根據調查凍害資料來看，融沉性在季節凍土地區的建築物穩定性方面的應用仍然具有積極的意義。
  9. But, even the permafrost table has highly raised the annual thermal imbalance of soil and the process of temperature rise, it is disadvantageous for the thermal stability of permafrost

    對于高溫多年凍土來說，盡管多年凍土上限也得到了較大幅度的抬升，但升溫過程和土體年收支的不平衡都在朝著不利於多年凍土熱穩定方向發展。
  10. Application of thermal insulation material in plateau permafrost soil zone subgrade

    高原多年凍土區路基保溫材料的應用
  11. The trend of permafrost temperature rise will be gradually restrained by reducing engineering thermal disturbances and soil temperature drop beneath the block - stone embankment

    多年凍土溫度升高隨著工程熱擾動的降低和塊石路基「冷量」積累，己逐漸被抑制。
  12. In order to study the features of freeze - thaw settlement in the permafrost, in this paper a two - dimensional numerical model of deformation and stress fields in embankment is established, together with finite element method, to calculate the distributions of deformation and stress fields of the freezing soil in an embankment

    摘要為了研究凍土的凍脹特性對公路路基穩定性的影響，建立了凍土路基變形場及應力場的二維數值計算模型，並應用有限元法求解路基土體凍結時變形場和應力場的分佈規律。
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