數值地形模型 的英文怎麼說
中文拼音 [shǔzhídexíngmóxíng]
數值地形模型
英文
digital terrain model-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed
研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。Based on studying of the unequal rainfall in space - time and the asymmetry physical geography parameters in space, which can influence the process of the runoff, this paper puts forward a sort of slope conflux and watercourse conflux simulating model based on grid, and that gains flux at random time and grid in basin
本模型針對降雨時空分佈不均勻與下墊面自然地理參數空間分佈不均勻，對產匯流形成過程的影響，提出了一種基於柵格的坡面產匯流與河道匯流的數值模擬模型。The research emphases of the paper include the establishment of terrain model and the realization of detail of surface. during the establishment of terrain model, the theory of fractal and the characteristics of ivs, fractal brown motion ( fbm ) are discussed and compared, and prove the model is adapt to the feature of the physiognomy
地形模型的建立和地表細節的表現是本文研究工作的重點，在建立地形模型的過程中，分析了分形理論和分形法中的隨機插值、布朗運動（ fbm ）的原理並進行比較，論證了其數學模型與真實地貌特徵基本吻合，並運用隨機插值法（ insert - valuestochastically ， ivs ）實現了地形的分形模型。Based on analysis of geologic foundation record about pingzhuang basin, a lot of sino - foreign geothermal geology record and investigation of field geology, measuring of ground temperature in person and geo - chemical analysis of ascension spring, gushing water of fault, the fact that the anomaly of geothermal gradient of pingzhuang basin, which is in region of low geothermal gradient, is caused by redistribution of conduction - oriented geothermal heat flow which is result from upheaval and depression of basin foundation bed is pointed out. after the field of ground temperature is simulated under the background of conduction - oriented geothermal heat flow by means of ansys, the characteristic of ground temperature distribution of top surface of basin foundation bed ( yixian team ) is revealed. the sound condition of transmissibility fault and feeding water source, which are imperative in formation of the low - medium temperature geothermal system of convective type, is possessed in pingzhuang basin
通過對平莊盆地基礎地質資料、國內外大量地熱地質資料的分析和野外地質調查、礦井實測地溫以及上升泉、斷層涌水的地球化學分析等工作基礎上，指出地處低地溫梯度背景區的平莊盆地地溫梯度異常是由於盆地基底隆起和坳陷引起傳導型大地熱流再分配所致；運用州sys數值模擬了大地熱流向地表傳導背景下的盆地地溫場，從而揭示了盆地基底（義縣組）頂界面地溫分佈特徵；闡明了盆地具有形成中低溫對流型地熱系統所必需的導水斷裂、補給水源等的良好條件，中低溫對流型地熱系統是地熱勘查的主要對象；圈定了平莊盆地北部朝陽溝?駱駝營子地熱勘查遠景區。On the basis of the former two - dimensions and three - components mhd numerical simulation, this paper analyses evolution of the magnetic helicity of various magnetic structures in the magnetotail
摘要在二維三分量mhd數值模擬的基礎上，對地球磁尾不同類型磁結構的形成作磁螺度分析。According to the data of infrared nephogram of satellite, provides the concept of demct ( digital elevation model of cloudy top ), studies the technology of modeling of the surface of demct. 3. the arithmetic of triangulated network of 3d - visulazation of cloud
2 .根據雲圖三維表現原理，從二維紅外衛星雲圖得出雲頂表面高度值，獲取雲的三維信息，類比地形數字高程模型，提出了雲頂數字高程模型（ demct ）的概念。In this paper, a numerical simulation is conducted, which is based on the test data of the model experiment of sloping ground with the help of the marc program. when the bearing capacity characters of level ground and the foundations adjacent to or above slopes are analyzed, the effect is considered, which includes deformation moduli, density, poisson ratio, angle of internal friction, stress - strain relationship, slope angle, relative distance from the edge of slopes and relative depth of footings
本文利用斜坡地基模型試驗的試驗數據，用marc軟體進行了斜坡地基模型試驗的數值模擬，分析了平地地基、臨坡地基和斜坡地基的承載力特性，研究了變形模量、容重、泊松比、內摩擦角、應力應變特性、斜坡坡度、基礎的相對坡頂距及其相對埋深等因素對斜坡地基承載力性能的影響。Applying spatial interpolation and data topographty model, realizes that isoline data create grid data, forms surface and makes three - dimensional geological body, according to the actual demands in oil and gas field development
運用空間插值、數字地形模型等方法，根據油氣田開發中的實際需要，實現由等值線數據生成網格數據，形成構建表面，最終得到三維地質體。The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability ， insulation coordination ， electromagnetic interference ， but assault safety 。 in china ， the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network ， low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai ， beijing ， and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas ， such as zhuhai ， substations grounding with low resistance revealed some problems ， including power supply reliability rapidly dropping ， transmitting line often tripping ； and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance
爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析，比較各方式的特點，然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型，在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下，對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算，其計算結果與電科院所作現場試驗進行了比較。We obtained the uniform data distribution from discrete data points by inserting spatial dots and then set up digital elevation model ( dem ) of correlative area through constructing mutual linked triangle net. the isoline graph was implemented based on this model. during the processes, we combined the technology of stratification computing when inserting special dots in fault area with the technology of stratification triangle net in fault area for dealing with thrust data
然後介紹了在本研究中構造逆斷層地質等值線的基本思路：從離散數據點結構出發，採用空間數據內插方法進行數據的均勻化，通過三角剖分構造出相互連接的三角形網路結構來建立起相關區域內的數字高程模型，利用該模型構造出相應的地質等值線圖，其中使用擴展點與斷層區的關系屬性進行斷層區分層空間插值計算處理和斷層區域的分層三角形網格化處理相結合的技術，實現逆斷層數據的處理和等值線繪制。Secondly, the finite - element analysis on the typical slope section is performed with establishment of geology model, definition of boundary condition and proper selection of mechanical parameters. the result shows that the slope is of integral stability, and the failure mode mainly comprises infrequent block drop and wedge body breakage. considering the two failure modes of plane failure and wedge body breakage, and stability calculation under different work conditions, the slope stability is discussed and the sensibility ana lysis on its fraction angel and cohesion force is made
然後通過建立地質模型、確定邊界條件、選擇合理的力學參數，取典型斷面對邊坡進行數值分析，分析結果表明斜坡整體是穩定的，破壞類型以零星掉塊和楔體失穩下滑為主；為了定量計算邊坡的穩定性，對邊坡兩種破壞類型：單滑面下滑和雙滑面楔形體下滑，考慮不同工況進行穩定性計算，並對摩擦角和粘聚力進行穩定的敏感性分析。In this paper, based on the tide, tidal current and ocean wave numerical computing techniques and the constructive method of seabed terrain model, the fusion and visualization of multiple digital marine geographic environmental information for the nearshore marine environmental safeguard are locally realized by using the level of detail model and 3 - d rendering technique, which will provide theoretic and experiential basis for the study field in the future
摘要以潮汐、潮流和海浪數值的計算技術和數字海底地形模型的構造方法為基礎，應用層次細節模型和三維渲染技術，完成了近岸海洋環境保障的多種數字海洋地理環境信息的融合與可視化的局部實現，為今後此領域的研究提供了理論和經驗基礎。Finit element method have been adopted to further study stress field and rockmass deformation repture characteristic
建立概化邊坡的地質模型，通過有限元數值分析，深化對工程邊坡的應力?形變作用的理解。I apply the modified double - iterated modeling algorithm to realize the three - dimension tree model successfully based on l - system with ips. to realize the terrain model, i expound the improved diamond - square algorithm in light of fractal interpolation and use it to model cloud, two - dimension texture terrain surface and three - dimension terrain
基於l系統以及迭代函數系統的特性提出了改進的三維樹木模型雙迭代生成演算法來實現三維樹木模型的模擬，而在三維地貌模型的模擬中，提出了改進的基於分形插值的diamond - square演算法實現了雲團、二維紋理地表、三維地形等模型。Based on the above purpose, in this paper, aiming at the questions in the past landslide prediction, such as sole research technique, backward method and theory achievement with weak practical, application and so on, time prediction and evaluation of landslides is emphatically researched from quantitative, qualitative and numerical modeling three aspects on the basis of widely consulting the domestic and foreign documentation and material related to landslides forecast. according to landslide monitor material, landslide quantitative prediction is realized by using landslide prediction and evaluation models ; on the basis of experts " experience knowledge, landslide qualitative prediction is realized by using the method and way of expert system ; landslide numerical prediction is realized by using simulation method to establish geology - mechanics - distortion model ( gmd )
基於上述目的，本論文針對過去滑坡預報的研究方法單一、手段落後，理論成果的實際應用性不強等問題，在廣泛查閱國內外有關滑坡預測預報文獻資料的基礎上，著重從定量、定性和數值模擬三個方面對滑坡的時間預測預報開展研究：依據滑坡的監測資料，運用滑坡預測預報模型實現了滑坡的定量預報；以專家的經驗知識為依據，運用專家系統的方法和手段實現了滑坡的定性預報；利用數值模擬手段，通過建立滑坡的地質?力學?變形模型（ gmd模型）實現了滑坡的數值預報。Digital terrain model
數值地形模型Based on the analysis of failure features, deformation shapes, the failure mechanism of weak - rock roadway is studied systematically. optimal supporting time model of bolt - grouting support is given with different methods when analyzing the bolt - grouting supporting mechanism at large. in order to study bolt - grouting supporting mechanism systematically with simulation method in heavily stressed weak - rock coal and rock roadway of huaibei mine, fem models under different conditions are found by using fem program - ansys. finally, construction technics, grouting parameters, and so forth, are studied and applied in the coal and rock roadway of taoyuan and qinan mines
在對深部高應力軟巖巷道變形破壞特徵、變形破壞形態分析的基礎上，對巷道變形破壞機制進行了較為系統地研究；接著在對錨注支護機理進行了詳盡分析的同時，提出了最佳錨注支護時間（段）的概念，並建立了最佳錨注支護時間模型；以淮北礦區深部高應力軟巖煤、巖巷道為背景，採用大型有限元軟體ansys ，分別建立了不同條件下的數值計算模型對錨注支護進行了較為全面系統的數值模擬研究，得出了一系列有價值的結論。The numerical model based on vof method gives the bragg resonance phenomena and the resonant reflection coefficient agrees well with the result of physical experiment. the numerical simulation on the interaction between surface waves and the triangle / trapezium sandbars on the seabed also shows the bragg resonance and the resonant period matches the davies " prediction
應用vof方法所建立的數學模型，在與物理模型試驗相同條件下，數值模擬反映出的bragg共振現象及得到的最大反射系數與物理模型試驗結果吻合；對波浪與三角形或梯形沙壩地形相互作用的數值模擬也較好地反映出了bragg共振現象，共振周期與davies理論預測一致。分享友人