裂縫擴大 的英文怎麼說
中文拼音 [lièféngkuòdà]
裂縫擴大
英文
crack growth-
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。You are looking at a good example of exfoilation, where the cracks happen along the crystaline of the rocks
你正看到巖石片狀剝落的很好例子，裂縫會沿著巖石結晶處產生而漸漸擴大Through the research and analysis on the three aspects concerning the base interface of the pavement panel, crack accumulation, expansion in the pavement panel and interaction between spring plates on the road surface as well as its damage on the road fatigue, it is first brought forth that the process of fissures and breakage in the cement concrete pavement can be divided into three stages, i. e. stage of initial crack formation and damage in the bottom of the pavement slab, stage of accumulation, intensifying & expansion in ruptures from load during the time of use and stage of fissures & breakage in the pavement
通過對路面板底界面開裂、路面板中裂縫積聚、擴展和路面表面車板相互作用及其對路面疲勞破壞的影響等三個層面的研究和分析，首次提出水泥混凝土路面的開裂和破壞過程可以分為三個階段，即路面板底初始損傷西南交通大學博士研究生學位論文第11頁和早期裂縫的形成階段、使用期間荷載作用對路面造成的開裂損傷累計、加劇和裂縫擴展階段以及路面斷裂破壞階段。During the tearing of the atlantic, and the dragging north or the north american continent, an already existing tear in the st
在大西洋撕裂，以及北極或北美大陸被拖動的過程中，一個在聖?勞倫斯航道上的原先就存在的裂縫進一步擴大了。The negative power can be very active in my life at times, trying to widen a hairline fracture into a crack and a crack into a chasm. but all is well now
否定力量有時候會很活躍，它總是試圖將一條微細的裂痕擴大變成一道縫隙，再把這道縫隙擴大成為一座峽谷。Advanced technical ceramics. monolithic ceramics. mechanical properties at room temperature. determination of subcritical crack growth parameters from constant stressing rate flexural strength tests
高技術陶磁.整體陶磁.室溫下的機械性能.第3部分:從恆定應力率撓性強度試驗中測定亞臨界裂縫擴大參數值A big technical problem for mass concrete stuctures during pouring is how tocontrol crack expansion
大體積混凝土基礎在澆灌中的一個重要技術課題是控制裂縫擴展。In harsh climate region, mere exists obvious local stress concentration near the upstream and downstream of the exposed - in - winter horizontal surface of the rcc dam, and the surface of spillway bucket though heat insulation is applied on the surfaces, tensile stress still exceeds the allowable one of concrete. this paper puts forward to adopt preset crack to avoid occurring more cracks. the special crack model is applied to simulate the dam preset crack, and the joint model of fracture mechanics is induced into strain - soften model
在結構措施方面，針對嚴寒地區高碾壓混凝土重力壩壩體越冬層面的上、下游面附近及溢流壩堰面反弧段表面有明顯的局部應力集中象現，在已採取一定的表面保溫防護的條件下，拉應力仍然超過混凝土容許拉應力，開裂難以避免，進而提出設置碾壓混凝土壩表面預留縫結構措施並對該措施進行深入研究，包括預留縫的擴展穩定和壩體沿預留縫的穩定性，以避免大壩在無措施部位開裂，解決大壩越冬層面水平施工縫的開裂問題。At first, ploygon aggregate structure of concrete is randomly generated in two - dimensional plane with monte carlo method on the meso - level. then, the growth process of a crack of concrete 3 - point bending beam specimen is analyzed by fem, according to the criterion of maximum circumferential tensile stress. and the path of crack to spread in mortar, aggregate and interfaces of them is gained by the ultimate fracture criteria in construction standard that the width of crack should not be more than 0. 2mm
首先，在細觀層次上，根據蒙特卡羅隨機抽樣原理，在二維平面上建立了混凝土多邊形隨機骨料結構模型，然後採用有限元計算方法，根據最大周向正應力準則，對三點彎曲梁構件進行了開裂過程的模擬，並以建築規范中構件裂縫小於0 . 2mm的要求為最終破壞標準，得出了裂紋在基質、骨料及界面的擴展路徑。With this in minds, many researchers have proposed a variety of models for describing the nonlinear fracture of concrete for the past decades. amid them most take the critical stress intensity factor kic as the fracture toughness, a sign of ability to resist the crack extension
對此，在過去的幾十年裡，眾多研究人員提出了很多描述混凝土非線性斷裂的模型，而其中的大多數斷裂模型都以臨界應力強度因子k _ （ ic ）作為抵抗裂縫擴展阻力的斷裂韌度。This is especially a problem in extreme climates where water can get into the cracks between supports, freeze and expand and cause a huge amount of damage
特別是在極端氣溫中，水會滲進橋墩之間裂縫，冷凍擴大並造成巨大的傷害。 」In accordance with the occurrences of weak interlayers, cracks and deep cracks with collapses in the body of the dam for heisonglin reservoir and the further developing tendencies of them, the technique of the fracture grouting is applied, and then the problem of the local instabilities in the dam is solved
摘要針對黑松林水庫壩體存在軟弱夾層及裂縫和深層隱蔽裂縫、塌坑及其有進一步擴大的趨勢，運用劈裂灌漿技術，解決了該壩體局部存在不穩定的問題。A big technical problem for mass concrete structures during pouring is how to control crack expansion
大體積混凝土基礎在澆灌中的一個重要技術課題是控制裂縫擴展。分享友人