孔隙中和應力 的英文怎麼說
中文拼音 [kǒngxìzhōnghéyīnglì]
孔隙中和應力
英文
pore neutral stress- 隙 : 名詞1 (縫隙; 裂縫) crack; chink; crevice 2 (空閑) gap; interval 3 (漏洞; 機會) loophole; op...
- 和 : 和動詞(在粉狀物中加液體攪拌或揉弄使有黏性) mix (powder) with water, etc. : 和點兒灰泥 prepare some plaster
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 力 : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
- 孔隙 : small opening; hole; [冶金學] pore; aperture gap; pore space; ventage; void
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And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media
以土力學模型為基礎,利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播,採用了顯式差分方法(中心差分法和newmark常平均加速度法結合)和透射邊界,通過比較利用幾種差分格式求解的加速度結果,發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用,分別編制了體波( p波或sv波) 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。The intense eluviation and weathering of soil with groundwater and run - off result in the enhancing of capacity of transference of some elements, such as si, al, fe, mn. the chemical reactions of the colloid particles in the soil water make those crannies or holes filled by some epigenetic clay minerals and quartz. then a great deal of white reticulate clay comes into being in the quaternary laterite of the dongting basin
地下水和地表水強烈的淋溶作用使土壤中硅鋁鐵錳等元素的遷移能力增強,土壤膠體粒子之間的化學反應,使得這些孔隙空間在後期逐漸被次生黏土礦物和石英所充填,最終,在洞庭盆地第四系紅土地層中形成大量的蠕蟲狀和根狀白色網紋。In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象,考慮滲流與傳熱的相互作用,採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明,高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域,增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降,熱滲透深度擴大,熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域,孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用Main content in simulation is the spatio - temporal evolution of the set of descriptive variables characterizing tectonic mineralization state under coupling of various processes as following : ( 1 ) variables related to forming and property of ore - forming fluid, such as dissolution rate of minerals ( include metal minerals ) in rock, concentration and saturation of aqueous species in fluid, temperature, pressure, and ionic strength etc. ; ( 2 ) variables related to structural deformation and fluid flow, such as stress, deformation rate, fracture network, porosity, fracture permeability ; ( 3 ) variables related to precipitation and mineralization, such as nucleation rate of gangue and metal minerals, accumulation precipitation of various minerals, etc. ; ( 4 ) spatio - temporal coupling relation of various variables above, such as the coupling relationship between spatio - temporal evolution of fracture permeability and flow and focus of fluid and ore - forming
模擬的主要內容是在各種過程耦合作用下,以下描述構造成礦體系的主要變量的時空演化:與成礦流體的形成和性質有關的變量,如地層中礦物(包括成礦物質)的溶解速率、流體中各組分的濃度與飽和度、流體溫度、壓力、離子強度等;與構造變形和流體運移有關的各變量,如應力與變形速率、巖石孔隙度、構造(斷裂)滲透率等;與沉澱成礦有關的變量,如礦物(金屬礦物和脈石礦物)的成核速率、各礦物的沉澱量等;上述各有關變量間的時空耦合關系,如斷裂滲透率時空演化與流體流動、匯聚和成礦的耦合關系等。We not only carefully discuss the clay ' s nature, its anti - sheer intension, the exponents of anti - sheer intension and the water pressure of the hole in clay, but also study varies analysis methods such as sweden strip method, stability coefficient method and bishop ' s simplified method of arc slice. finally, we thoroughly discourse upon the method of none arc slice in slope analysis
論文中對粘土的抗剪強度特徵、粘性土抗剪強度指標的選擇應用和孔隙水壓力等問題進行了分析,同時對分析土坡穩定性的瑞典條分法、穩定數法、圓弧滑動面的畢肖普法以及對非圓弧滑動面的土坡分析方法進行了細致深入的闡述和分析。Through experiment and analyzing the changes of the thickness, rigidity, tensile strength and the opening rate of the conduits caused by the different kinds of coating material, the thickness of the coating and the different braiding structures, we investigate the physical and mechanical, properties of the braided conduits. the results show : the chitosan is easy to form the film structure on the surface of the conduits increasing the conduits ' rigidity clearly ; the rigidity and opening rate of the braided structure with inserted reinforcing yarn are better than the others, this will prevent the conduits collapsing and distorting effectively in the practical uses, so we select conduits of this structure for animal experiment
在導管的物理機械性能研究方面,本課題通過塗層劑的種類( pgla丙酮溶液和甲殼胺漿液) 、塗層劑的厚度、導管的編織結構三個方面分析它們對導管的厚度、硬挺度、拉伸強力和孔隙率等性能的影響。測試結果顯示:甲殼胺塗層易於在導管表面成膜,對導管的硬挺度有明顯提高,塗層效果較好;加筋結構神經導管在硬挺度和孔隙率方面優于其它導管,能有效防止導管在實際應用中的塌陷變形。Based on the foundation " liquefaction test study on the rapid railroad bed " supported by the railway department, some works on the liquefaction of silty soils have been carried out. in this dissertation, after making a short review of the works on seismically induced soil liquefaction, some research results are presented, which include the following contents. ( 1 ) depending on the dynamic triaxial test, the liquefaction strength of the silty soils is studied and two new models are proposed to evaluate the pore water pressure and the strain of the saturated silty soils during earthquake
結合鐵道部發展基金項目: 「高速鐵道液化土地基試驗測試研究」 ,本論文概括總結了地震液化的研究現狀,就滬蓉高速鐵路徐州段可液化場地粉土地基的液化特性問題開展了一些研究工作,內容如下: ( 1 )提出了基於實用目的的粉土的孔隙水壓力增長模式和永久應變勢計算模型,並把此兩模型應用於場地的地震反應分析和地震液化性能的評價中;依靠循環振動三軸試驗技術,對粉土地基的地震液化強度進行了試驗研究;驗證了密實度是粉土液化的重要影響因素。Non linear static & dynamic finite element procedure is adopted for the true emulation of the four typical geologic profiles of the dam, and imitates to compute the each stage deformation and stress distribution from the dam fill to full water run and during the 7 degree seismic intensity, the article also imitates to compute the response to earthquake force, the excess vibration pore water pressure distribution and permanent deformation, predicting the occurrence possibility of the crac ^ plastic zone and earthquake liquefaction
採用非線性靜、動力有限元分析程序對圍壩的4個典型剖面進行了靜、動力模擬模擬,模擬計算了壩體自填築至蓄水運行和發生7地震各階段壩體及壩基的變形以及應力分佈,地震應力響應和地震引起的超靜振動孔隙水壓力分佈以及永久變形。判斷了壩體和壩基中出現裂縫、塑性區以及地震液化的可能性。The thermal fatigue resistance of al2o3 - 20wt. % tic is the best, it is due to high kic and pore of the material. the pore decrease the stress extension of tip of cracks and delay themal shock fatigue cracks extension. 4
含20wt . tic的復合陶瓷具有高的k _ ( 1c )和較多的孔隙,這些空隙在熱震疲勞時降低熱震疲勞裂紋尖端的應力集中並阻礙裂紋擴展從而提高了材料的斷裂抗力,故其具有最好的抗熱疲勞性能。Based on the above methodological analyses and practical situation of feixianguan interval in the luojiazhai and dukouhe structure on the east of sichuan, a set of well log interpretation formation pressure application program is developed. it has been successfully applied to the fine interpretation of luojia4 well and du4 well, and so on. the results of formation pore pressure, fracture pressure and breakout pressure are all accordant with the practical situation
在上述方法理論研究的基礎上,結合川東羅家寨和渡口河構造飛仙關組地層的實際情況,編制了一套適合於該研究工區的地層壓力測井解釋應用程序,並用於羅家4井和渡4井等井的測井資料精細處理中,所計算的地層孔隙壓力、坍塌壓力和破裂壓力與實測資料相符,且所確定的鉆井泥漿密度窗得到了實際生產的驗證,達到了預期效果。With the data recorded by computer, the author studies the experiment progress in detail, which includes the development of pore press, strain, strength of the sand, etc. connecting the development of these phenomena with the development of stress path, the author finds new mechanism which can explain the phenomena in the experiment. what is more, according to the dynamic test of the sand, there appears a steady state at the last phase of the development of strain and stress path, in which the strength of the sand is studied because it is an important parameter in evaluating the stability of sand against liquefaction. secondly, the dynamic constitutive relation was studied through the dynamic tri - axial test
本文首先採用目前國內較先進的微機控制動三軸儀,利用其可以適時採集和儲存數據的優勢,對砂土的實驗過程進行了細致的分析,研究該過程中孔隙水壓力發展、軸向應變發展以及它們與應力路徑之間的關系,對飽和砂土的剪脹、剪縮和卸載體縮等多個方面進行了研究,探索了砂土的動力特性,分析了影響砂土抗剪強度的各種因素,這些因素既包括土本身的特性(土的密度、結構、級配、透水性以及初始狀態等) ,又包括動荷載的特徵(振動力幅值大小和振動頻率等) 。Abstract : the excess pore water pressure of saturated soft clay foundation caused by pile pushing is obvious. the method for calculating squeezing stress and excess pore pressure by elastic - plastic theory is deduced in this paper, and furthermore, the reasonable pile spacing by regarding the influence of both squeezing stress and excess water pressure is given
文摘:飽和軟粘土地基沉樁過程中樁土擠壓所引起的樁周土體超孔隙水壓力效應是非常顯的.本文從彈塑性理論出發推導出沉樁過程中樁周土體擠壓應力及超孔隙水壓力的計算公式,給出了考慮擠壓應力和超孔隙水壓力影響因素的合理打樁間距的確定方法Then the dynamic model of saturated soil layer caused by pile longitudinal vibration is founded. incorporated wave propagations into saturated soil layer, the characteristics of soil resistance factor and the mechanism of the radial damping are analyzed, as well as distributions of shear stress and pore pressure in saturated soil caused by pile vibration
然後利用上述解析解分析了飽和土層復阻抗,並從飽和土波動理論出發,建立了樁縱向振動引起的飽和土層振動模式,剖析了輻射阻尼產生機理,研究了樁縱向振動引起的飽和土層中剪應力及孔隙水壓力分佈。The pore air pressure gradually goes up with the developing of axial strain in the process of the dynamic torsional shear test of loess, but the pore water pressure hold the line or goes up a little in the last. the stress - strain dynamic constitutive relationship of intact loess and man - made loess show the hyperbolic model. there are some remarkable differences of strength and strain between unsaturated loess and saturated loess
研究結果表明:非飽和黃土在動力扭剪試驗過程中,隨著軸向變形的發展,孔隙氣壓力逐漸上升,而孔隙水壓力則基本保持不變或後期略有升高;原狀黃土和重塑黃土的應力應變本構關系呈雙曲線型;非飽和黃土和飽和黃土的強度及變形特性存在明顯差異;進而分析了含水量、固結應力和固結應力比對黃土動力特性的影響本文最後對非飽和土的有效應力計算公式進行了討論。A model test was designed to simulate the consolidation process of warping soil, the validity of theoretical equation and the solution methods presented in this study. actual measurements for excess pore - pressure, void ratio and settlement - time curves all showed good agreement with the corresponding computed values
將理論計算的超孔隙水壓力、孔隙比、沉降-時間曲線和根據實測數據計算的這些量進行比較分析,說明文中建立的滲壓作用下的有限應變固結理論模型及求解方法的合理性。The osmotic pressure test was developed to determine the unknown, finite strain consolidation coefficient and convection coefficient in the mathematical model. the two coefficients both varied with effective stress and depth and were functions of initial void ratio, compressibility, permeability and permeability derivative along depth. a precise time step integration method was proposed to solve the finite strain osmotic consolidation equation with varied coefficients
設計滲壓固結試驗確定理論模型中的待定系數有限應變固結系數和有限應變固結對流項系數,這兩個系數均為隨有效應力和土層深度變化的量,並且體現軟土初始孔隙比,壓縮性、滲透性及其沿深度變化等因素的綜合影響。The main conclusion made from the test is that the rock mechanics properties are always changed and mainly affected by stress state and saturation of pore fluid during developmentof oil and gas
指出油氣開發過程中巖石力學性質是不斷變化的,且主要受巖石的應力狀態和孔隙流體含量的影響。分享友人