覆土層 的英文怎麼說

中文拼音 [fùtǔcéng]
覆土層 英文
overbarden
  • 覆 : 動詞1. [書面語] （蓋住） cover 2. [書面語] （底朝上翻過來; 歪倒） overturn; upset 3. 同 「復」 （Ⅱ1. 2. ）
  • 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
  1. They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem

    本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。
  2. Influence on different overburden soils due to bedrock fracture

    地下斷裂對不同土質上覆土層的工程影響
  3. The earth surface of the region across it is mostly thicker humus soil or leaf falling covering layer, and has good heat reserving property, it is mostly weathering shingle, soil - aggregate mixture, and clay - gravel 0. 5m - 4. 0m under it, and weathering rock

    所經地區的地表多為較厚的腐殖土或落葉覆蓋層，其保溫性良好，下層0 . 5 ? 4 . 0米多為風化沙礫、碎石土和礫石土， ， 4 . 0米以下為風化巖石。
  4. Dynamic response research of high earth - rock dam on the thick moraine cover foundation

    深厚覆蓋層上高土石壩的動力反應特性研究
  5. Could there exist another possibility for the south boundary of the system as follow : the rainfall infiltrates in the outcrop carbonate - mountain area of western, and moves towards south and deeper along carbonate rocks, then moves upper through the overlain tertiary system ( n ) with a thickness of 400m ( instead of running off to the springs and yellow river through a long approach of least hydraulic gradient ), and then mainly transforms into the horizontal drainage in the loess layer of quaternary, finally drains in lu - botan depres sion

    並且提出，關于對系統南界的認識，是否存在另一可能：即在西部碳酸鹽巖裸露區大氣降水入滲后，沿碳酸鹽巖向南向深部運動，然後，並非在極小的水力坡度驅動下長距離地向東部黃河、泉群徑流排泄，而是通過上覆厚度約400m的第三系向上運動，繼而主要在第四系黃土層中轉為向南水平排泄到鹵泊灘。
  6. Hada mountain embankment dam is located at strong motion earthquake area with 7 degree. it is a sand - fill dam with clay core, stability of the dam under earthquake and the preventive of foundation liquescence is very important for the dam design

    哈達山土壩是位於七度地震區，坐落在厚覆蓋層上的粘土心墻砂殼壩，壩體的抗震穩定、基礎的抗震液化是本工程的技術關鍵問題。
  7. The explanation could rest in the differen ecological character and matablolic responses to hms. when pleurotus ostreatus, lentinus edodes, flammulina velutipes, agrocybe cylindracea were cultivated with fifth formula of substate. the study investigated the situation of cd pollution in four main producing areas in henan province when ahauicus blazei was artificially cultivated with cattle manure, straw and soil

    在利用土壤、牛糞栽培巴西蘑菇時，發現菇中的鎘主要來自於土壤、牛糞等輔料，說明了輔料在一定程度上決定了巴西蘑菇的富鎘特性，在人工栽培時，最好用尿素、硫酸銨等氮源代替牛糞，以深層土作為覆土來降低菇中的鎘含量。
  8. Gravelly - sand over an iron - pan and gravel layer

    沙礫覆于鐵質土層與砂礫層之上。
  9. In which, it gives inquiring of the construction of deep - water foundations and the usage of floating crane. the construction program of bridge pier foundation will be fixed according to the water depth. if the water depth is less than 4m, pier foundation will adopt the method of building island by earth filling ; if the water depth is more than 4m and there is over burden at river bed, at the same time, it has sufficient bearing capacity to load steel pipe pile, the steel pipe pile platform will be adopted

    其中，對深水基礎的施工及浮吊的使用進行了探討，根據水深確定橋墩基礎的施工方法，對水深不超過四米的橋墩基礎，採用填土築島的方法：對水深大於四米，河床有覆蓋層，且能保證鋼管樁具有足夠的承載力的橋墩，採用鋼管樁平臺；對主河道上河床沒有覆蓋層，鋼管樁無法插打的橋墩，採用浮式平臺。
  10. The surface is the relatively thin covering of soil and unconsolidated rock waste.

    浮土是由土壤和未固結巖屑組成的比較薄的覆蓋層。
  11. By the crop residue input, priming effects of soil irjcrobe will take place, and decomposition and bio - fixation give rise to soil organic matter arid m in the up layer of soil. on the other hand, tillage accelerate ; ; the organic matter mineralization and leads to the quantity of organic matter decreasing in. or 10cm. layer which is about 1 / 2 of soil organic matter under no - tillage

    覆蓋免耕使土壤上層的有機質和氮素穩定增加，這主要來自被激發的微生物繁殖時對碳和氮的生物固定，而傳統耕作則由於耕翻加速了有機物的礦化， 0 - 10cm土層微生物碳含量均一，其數值幾乎為免耕系統的一半。
  12. In alaska, salmon populations are faltering as melting permafrost pours mud into rivers, burying the gravel the fish need for spawning

    在阿拉斯加， ?魚群的數量正在逐漸減少，因為永久凍土層融化帶入大量的泥土到河中，覆蓋了?魚產卵所需的碎石。
  13. The test indicates that the response of shallow buried is larger than that of deep buried, which explain the importance of overburden to structures

    試驗表明淺埋情況的各種反應均大於深埋情況，這說明了約束結構的上覆土層的重要性。
  14. The dam for chahanwusu hydropower station is the first one among the concrete faced rock - fill dams under construction with the height of over 100 m and the toe slab being constructed on thick and deep cover in china

    摘要察汗烏蘇水電站水庫大壩為目前在建的河床趾板建在深厚覆蓋層上國內首座百米級的混凝土面板堆石壩。
  15. At first, the relations between vegetation structures and their controlling soil erosion are discussed. the results show that magnitude of plant community coverage or canopy closure is n ' t certainly the adequate condition of an anti - erosive effective community because the community function of soil and water conservation is related to height of coverage layer as well as community coverage or canopy closure

    首先，討論了植被結構與其防止土壤侵蝕作用的關系，結果表明，植被蓋度或郁閉度的大小並不一定就是防蝕有效植被的充分條件，植被保持水土功能還與覆蓋層的高度密切相關，覆蓋層高度大並不有利於植被保持水土。
  16. Taking the earth - rock dams with straight clay core constructed on thick moraine cover foundation and directly built on bed - rocks with the same sizes and the same materials for example, two - dimensional dynamic fem programme is used to contrast and analyze the static stress distribution and dynamic response difference of two types of high earth - rock dams in the intensive earthquake zones

    摘要以相同尺度和相同材料的建造在深厚覆蓋層上直心墻土石壩和直接建設在基巖上的直心墻土石壩為例，採用二維動力有限元程序對比和分析了強震區兩種高土石壩的靜應力分佈和動力反應的差異。
  17. In the simulation and analysis on culvert construction, the method of foundation - pit excavation layer by layer and step by step was used, i. e. the method that makes the surface of excavation have no stress, when the elements were excavated gradually in period of construction. at this process, the state of soil is unloading, the laws of stress field and displacement field with the depth of excavation were studied. based on the obtained stress field and displacement field after the excavation was completed, by using of the newly increased filling - elements " gravity and the grinding force, the simulation of the construction of body of the culvert and foundation - pit ' s filling layer by layer had also been done in this dissertation

    用有限元法模擬分析涵洞基坑開挖時，採用分層、分步模擬開挖過程的方法，即將計算域內單元分層「挖去」 ，使開挖表面成為無應力表面的方法，分析土體在卸載狀態時的應力場和位移場隨開挖深度的變化規律；在洞體施工后，回填土體時，據開挖完成時的應力場、位移場，通過逐級增加計算域內的單元數目，施加每級新增加單元的自重荷載，利用有限元法模擬基坑及上覆土體分層填築的施工過程，這不僅反映土體處于再加載應力狀態時，填土受力及變形的一般規律，而且這種將地基? ?涵洞? ?土體作為一個統一整體進行模擬的方法，量化了三者之間的相互作用關系。
  18. To know the rupture course and rupture range, we simulated the process of rupture on the overlaying soil with soft interlayer by plane strain finite element method in this paper

    摘要為了了解軟夾層對基巖上覆土層破裂的影響，確定土層的破裂范圍，採用平面應變有限元法，模擬了有軟夾層的上覆土層在斷層錯動時的破裂過程。
  19. Through shaking table test, in this paper the rule of the underground structure reaction to earthquake is summarized and the distortion of the structure and the mechanism of wreck are analyzed, especially the effect of overburden and the vertical earthquake to underground structure are studied

    摘要文章通過振動臺試驗，總結了地下結構地震反應規律，分析地下結構的變形機制，並重點分析上覆土層和豎向荷載對地下結構動力性態的影響。
  20. Results show that the overlying soil with a soft interlayer can obstruct the rupture failure from bedrock up to the earth ' s surface, however, a soft interlayer which is deeply buried, will bring about a wider range of the earth ' s surface rupture failure ; in addition, the thickness of the soft interlayer may have effects on the rupture course of the overlying soil

    從模擬的結果看出，軟夾層對上覆土層破裂有一定的阻礙作用；當軟弱層埋置較深時，一旦上覆土層破裂，失效土體的范圍較大；軟弱夾層的厚薄對上覆土層的破裂進程和破裂范圍也有影響。
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