孔隙壓縮性 的英文怎麼說
中文拼音 [kǒngxìyāsuōxìng]
孔隙壓縮性
英文
pore compressibility-
The variations in trace element contents and ratios may hold up a mirror to the lake - level fluctuations and climatic changes, which, in turn, have exerted a direct and important effect on the sequence stratigraphic development. collectively, the reservoir rocks from the yanchang formation consist dominantly of the delta front subfacies subaqueous distributary channel and channel - mouth bar microfacies and delta plain subfacies subaerial distributary channel microfacies fine - grained feldspar sandstones and siltstones. the reservoir rocks have been subjected to three stages of diagenetic and porosity evolution : ( 1 ) the porosity reduction by the mechanical compaction and chemical pressure solution during the early diagenetic stage ; ( 2 ) the porosity increase by the dissolution during the a substage of the late diagenetic stage, and ( 3 ) the porosity reduction by the cementation and filling during the b substage of the late diagenetic stage
系統的儲層特徵研究表明,該區延長組儲層成因類型主要為三角洲前緣水下分流河道、河口砂壩及三角洲平原水上分流河道微相細粒長石砂巖、粉砂巖;儲層巖石經歷了壓實,膠結,溶蝕等成巖作用,歷經早成巖機械壓實和化學壓溶孔隙縮小期、晚成巖a亞期溶蝕作用孔隙擴大期及晚成巖a亞期( b亞期)膠結充填孔隙縮小期三個成巖-孔隙演化階段;儲層物性總體上具有較低孔滲、低孔滲的特點,孔隙類型主要為粒間溶孔、殘余粒間孔隙、粒內溶孔、晶間孔及晶間溶孔,裂縫不發育,儲集巖排驅壓力和中值壓力較高,孔隙結構類型以細小孔-微孔隙,微細喉-微喉型為主。In this paper, the influence of cycles of drying and wetting on strength and deformation are studied by means of routine direct shear apparatus, triaxial apparatus and light consolidation apparatus which include : the influence of force of constraint on strength, the total stress strength of expansive soils with different saturation degree, the influence of cycles of drying and wetting on the total stress strength, the relation between saturation degree and compression modulus and that between saturation degree and void ratio, the influence of cycles of drying and wetting on the effective stress strength, the relation between saturation degree and generalized suction
本文利用常規直剪儀、三軸儀以及輕便固結儀,分別對非飽和膨脹土的強度和變形特性以及干濕循環對強度和變形的影響進行了一系列的試驗研究。以飽和度、干濕循環次數為變量,分別探求了外力約束對膨脹土強度的影響,不同飽和度膨脹土的總應力強度特性,干濕循環對非飽和膨脹土總應力強度的影響,飽和度與壓縮模量以及孔隙比的關系,干濕循環對飽和膨脹土有效應力強度指標的影響,廣義吸力與飽和度的關系,建議了一組計算非飽和膨脹土變形及強度特性的經驗公式。The fact that wave velocity in quasi - saturated soil is equal to that of fully saturated soil could not be calculated by effective fluid compressibility or explained by unwell - distributed saturation. we account for this in a new reasonable way which was based on kuster scattering effect analysis
( 8 )根據kuster散射波理論,計算了飽和度大於85的準飽和土體的彈性波速,其結果與試驗非常吻合;但是,通常所用的等效孔隙流體壓縮系數的方法所計算的結果與實驗結果差別很大,對此,筆者給予了一定的解釋。The reason for the failure of loosely residual soil slopes triggered by rainfall is that the contractive failure caused by the penetration of rainfall, giving rise to a high excess pore pressure which reduces shear strength of the soil. the soil is prone to flow slide after failure under the action of gravity due to its high moistu re content
蔣家溝地區坡殘積土斜坡在暴雨條件下的破壞是由於降雨入滲導致土體發生剪縮破壞,破壞後土體的孔隙水壓力升高形成超孔隙水壓力、土體強度降低、破壞迅速擴展所致,因而大多數斜坡呈流滑型破壞並具有突然性破壞特點。The sensitivity of one - dimension consolidation degree to the uncertainty of seepage coefficient, void ratio and compression coefficient is analyzed, then, the reliability of percent consolidation is analyzed with jc method and the steps of calculation are presented
分析了固結度對滲透系數、孔隙比和壓縮系數三個參數不確定性的敏感性。利用jc法分析了一維固結度的可靠性,通過實例驗證用所給的迭代步驟,計算結果收斂很快。The sedimentation compression lines, intrinsic compression lines can be normalized by a void index, then the difference of the structural clays and reconstituted clays are showed
天然粘土的沉積壓縮曲線、重塑土的壓縮曲線可以用孔隙指數來歸一化,它清晰地顯示出結構性土和重塑土的內在差別。If asphalt concrete specimen is in stabilization by exert confining stress before the static triaxial test, it is then found that under the condition that time is long enough, the volume of the specimen will shorten gradually and stable around a fixed value, and the amount of compression is essentially the half of the volume of void itself. it is also found that in stabilization by exert confining stress the linear phrase will be shorten in the figure of the static triaxial test of specimen, while the initial tangent modulus will be augment. 3
在進行靜三軸試驗以前先對瀝青混凝土試件進行圍壓穩定,發現在時間足夠長的條件下,試件的體積會逐漸縮小,並逐漸穩定在某一定值,其壓縮量基本上為其本身孔隙體積的一半;經圍壓穩定后的試件靜三軸試驗曲線上的線性階段明顯縮短,而初始切線模量增大。The unconfined compressive strength, shearing strength and permeabi lity of stabilized soils were tested in laboratory, the strength of contaminated composite soils sampled with different ph and soaped in corresponding ph were compared. the results from experiments indicate that there exists a certain relationship between the soft soil properties and the unconfined compressive of grouted soil. with the increase of water content, porosity ratio, degree of porosity, plasticity limit, liquid limit and liquid index, the compressive strength of cement - sodium silicate - stabilized soil decreases, while increases as the bulk weight and compressibility modulus
通過對水泥?水玻璃加固土的無側限抗壓強度試驗,以及用不同酸堿性水製成與養護的固結土所進行強度對比試驗,得出軟土的物理力學性質指標與加固土的抗壓強度之間存在一定的相關關系,即隨著含水量、孔隙比、孔隙度、液塑限及液性指數的增加,水泥?水玻璃加固土的抗壓強度相應地降低;而隨著原狀土的容重、壓縮模量的增加,水泥土的抗壓強度也隨之增加。The key to calculate the moistening deformation is to work out the distribution of the water content. aiming to the collapsible accidents owing of leakage, this text establishs two - dimensional immersing model of collapsible loess and predicts the change of water content in loess subsoil. furthermore the text selects the stress path method to calculate the moistening deformation subjected to leakage, substituting compressing moduls for tangent moduls after taking cavity ratio and water content into account, putting forward the method to calculate the moistening deformation
增濕變形的關鍵是研究含水量的變化,本文針對黃土地基由於漏水所引起的濕陷事故,建立了二維濕陷性黃土地基積水入滲模型,實現了對黃土地基含水量變化的預測,進一步選擇了分層總和法計算黃土地基增濕變形,考慮了含水量、孔隙比對模量的影響,以弦線模量取代壓縮模量,提出了計算增濕變形的計算方法,計算了由於漏水而引起的黃土地基增濕變形量。The sedimentation compression lines of natural clays, intrinsic compression lines of reconstituted clays and oedometer compression curves can be normalized by a void index, then the difference of the structural clays and reconstituted clays as well as the gradual damage course of soil structure are showed apparently
用孔隙指數來歸一化天然粘土的沉積壓縮曲線、重塑土的壓縮曲線和固結儀壓縮曲線,可以很清晰地揭示出結構性土與重塑土的內在差別、固結儀試驗中土體結構性的漸進破壞過程。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) 。The drilling hole pour pile technique has been wide - ranging used in the high buildings " foundation and base of the wide span construction and base of bearing weighty load construction, but the geology conditions that surrounding the pile are differ in thousands of ways, extraordinary, the soil there is small opening and it can be compressed and the bottom of the pile ' s hole there is much more dregs, so many confuse reasons ca n ' t be computed weaken the pile ' s ability of bear load
鉆孔灌注樁施工技術在高層建築、大跨度、大承載力的基礎工程中得到了廣泛的應用,但是,地層土壤存在孔隙、土壤具有可壓縮性、孔底存在沉渣等許多不可明確計算的因素,使樁的承載力存在不同程度的削弱,實際承載力與設計值有較大出入。Regarding the lcm filling process as the newton fluid through fibrous reinforcements, the permeability of preform determines the saturating of resin in fiber, and has effects on the curing process and the quality of products. based on the darcy ' s law, the theoretical model of permeability measurement was established. and the influence of different testing methods and major process parameters such as fabric structure, fiber volume fraction, injection pressure, flow rate and resin viscosity on preform permeability were investigated in details
文中首先根據達西定律建立了滲透率測量的理論模型,深入研究了不同的測試方法及主要工藝參數(纖維織物織構、纖維體積含量、充模壓力、流動速度、樹脂粘度)對滲透特性的影響規律,發現多孔介質增強材料的滲透率主要取決于纖維織物的結構形式,預成型體孔隙分佈及其體積分數、壓實性對滲透率有較大的影響,提高充模壓力和流動速度可以縮短充模時間,在一定程度上可以提高滲透率。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 study shows that rock stress sensitivity has the following characteristics : rock property has little sensitivity to stress, of which porosity has the least, permeability less, and compression coefficient most ; the rock property decreases with formation pressure decrease ; in the same formation pressure drop, decrease amplitude of the rock property is not a continuous function of permeability but related to distribution scope of permeability
研究得出,巖石的應力敏感性特徵主要有:巖石物性對應力的敏感性總體上不大,其中以孔隙度最小,滲透率次之,壓縮系數最大;巖石物性隨地層壓力的下降而下降;在同一地層壓降下,巖石物性下降幅度不是滲透率的連續函數,而是與滲透率分佈范圍有關,高滲透率范圍,巖石物性下降幅度小,低滲透率范圍,巖石物性下降幅度大。The soft foundation has the characteristic of " three low and three high ", namely high moisture content, high porosity ratio, high compressibility, low intensity strength, low permeability, low coefficient of consolidation
軟土地基具有「三低三高」特性,既高含水量,高孔隙比,高壓縮性,低強,低滲透性,低固結系數。The dissertation researches evolvement and character of formation compression by model test and geology analyzing, based on analyzing transformation of porosity, permeability, compressibility and density of sandstone and mudstone and fracture during subsidence and uplift
本文以模擬試驗和地質分析為主要研究手段,在分析沉降、抬升過程砂泥巖孔隙度、滲透率、壓縮性、密度及裂縫變化的基礎上,研究地層壓力的演化及特徵。It is related to lithology, lithology association porosity, permeability, compressibility of rock, enclosing and fracture etc. therefore, it is important for the forecast of formation compression to consider fully the variation of each geology factor
實際上,地層壓力的影響因素很復雜,與巖性及其組合、巖石的孔隙度及滲透率、壓縮性、巖層的封閉性、裂縫等有關。因此,在進行地層壓力預測時要充分考慮各種地質因素的變化。分享友人