凍土深度 的英文怎麼說
中文拼音 [dòngtǔshēndù]
凍土深度
英文
frost penetration-
The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological
分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象，依據astm標準及國際通用文物保護研究方法與評估準則相結合，通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定，及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響，對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。Actual measure and numerical simulated forecast analysis of dangerous position freeze temperature field of deep topsoil layer
深厚表土層危險層位凍結溫度場實測與數值模擬預測分析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。To check the efficiency of the insulations, by varying the thickness, the width and the position of the insulations ( expandable polystyrene insulation layer ( eps ) ; polyurethane ( pu ) ) and the material of the roadbed surface in the calculation, the maximum thawed depths during the following 50 years on permafrost under the roadbed were simulated
為了檢驗保溫材料的效果，計算時採用改變保溫材料聚苯乙烯板（ eps ）和聚胺脂板（ pu ）的厚度、寬度、埋設位置及路基表面條件，來模擬路基面下多年凍土季節最大融化深度在今後50年內隨時間的變化。The results of the tests of permeability, retain marshall stability, freeze - thaw split, fuel - resistance and texture depth showed that the agent used in this research reduced the level of damage due to moisture and fuel in asphalt mixtures, while with very little influence on the skid - resistance
滲水試驗、浸水馬歇爾試驗、凍融劈裂試驗、抗油性能試驗以及表面構造深度試驗的結果表明防水抗油劑能夠極大地提高瀝青混凝土的水穩定性和抗油污性能，同時不影響路面的抗滑性能。Finite element numerical simulation of deep foundation pit excavation supported by frozen soil wall with nonhomogeneous temperature distribution
非均勻溫度分佈凍土墻圍護深基坑開挖的有限元數值模擬In this paper, the present status of development on the deep foundation pit conserved by frozen wall and coupled problems are analyzed thoroughly. the governing differential equations are obtained based on thermodynamics, while the finite element formulae is achieved by the galerkin ' s method
本文在對凍土墻圍護深基坑開挖凍結溫度場和應力場耦合分析研究現狀的基礎上，以熱力學為基礎，推導了凍土墻溫度場控制微分方程，並利用伽遼金方法推導了凍土墻凍結溫度場和應力場耦合計算的有限元計算格式。In this paper, the calculating model for coupling function of water movement and heat conduction in subgrade is established based on the theory of continuum mechanics and the thermodynamics. the load function ’ s influence to frost heave is qualitative consideration in the model. the relationship of moisture content and temperature change with time and depth is calculated by use of matlab
本論文基於連續介質力學和熱力學理論，建立了路基土的水分運移和熱傳導耦合模型，並定性的考慮荷載對凍脹性的影響，利用matlab數值計算軟體，求解出了路基土在凍結過程中的含水量和溫度在不同時間隨深度的變化關系。Based on five years regional water - salt monitoring data and related hydrological and weather information in the smaller scale experiment zone ( shahaoqu ), the regional water - soil ( salt ) environment regime including grounder water table depth, water quality, superficial layer ( 0 - 40cm ) and middle layer ( 40 - 70cm ) soil moisture and saline concentration are simulated, tested and predicted using bp model. at the same time, the rbf model is be used to calibrate the results of bp
以一個小尺度試驗區的多年區域水鹽監測資料及水文氣象資料為建模依據，對試區非凍期（作物生長期）的地下水位、地下水質、土壤水鹽（ o - 40cm ， 40 - 70cm ）的水-土（鹽）環境狀況進行了較為深入全面的模擬預測，並進行了rbf模型預測結果的對比。4. the study on the frozen soil feature and its influence on the runfall of the catchment in qilian mountains. the results indicated that the soil begins to freeze around october 20, and finishes melting around august 20 of next year. altitude slope side, vegetation condition of the land and temperature are the factors influencing the depth and the time of soil
4對祁連山區凍土特徵及其對流域徑流的影響研究表明，祁連山林區土壤每年的10月20日左右開始凍結，較低海拔的到第二年的8月20日左右消融結束；海拔、坡向、植被、下墊面狀況、溫度是影響凍土深度、早晚的制約因素；凍土厚度與徑流量成反比關系。分享友人