There are many frost heaving freezing and thawing phenomena in Heilongjiang Province, they are very important geological disaster in construction engineering.

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Thorough analysis of the damage mechanism of frost heaving on the concrete lining of the channel with trapezoidal cross section, this article presents the following conclusions.

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The conclusion has guiding significance for mastering the characteristics of frost heaving and thawing-settlement in salty soil area of Qinghai-Tibet Railway.

所得結(jié)論對掌握青藏鐵路鹽漬土地區(qū)凍土工程凍脹可西西人体大胆午夜啪啪、融沉特性有著指導(dǎo)意義。

The faster freezing velocity, the rapider frost heaving forces because it's too slow to dissipate in the unfrozen regions.

凍脹力的大小取決于凍結(jié)速率的快慢以及未凍區(qū)的壓密狀態(tài)中国一级毛片视频。

Moreover, frozen restraint between the slate and the underneath frozen soil is an important condition for frost heaving of the slate.

另外 女性私密按摩一区二区，渠道邊坡襯砌層和其下凍土層之間凍結(jié)約束的存在與否是邊坡襯砌層會不會受凍脹力的必要條件，若此約束存在一区,二区,三区乱淫视频，則可能受凍脹力人人看人人干人人午夜，若此約束不存在，則其不可能受凍脹力爱情岛亚洲永久自拍品质。

During a series of temperature cycles, there are critical temperature value successive displacement. Frost heaving and thaw settlement for slope soil surface are calculated and analyzed by applying self-design model triangle frame.

應(yīng)用自行設(shè)計的變形測量裝置對斜坡土體表面凍脹和融沉進(jìn)行了計算和分析美女国产精品视频是黄网站，得出凍土斜坡的融沉變形遠(yuǎn)遠(yuǎn)大于凍脹變形的結(jié)論，與青藏公路沿線多年凍土地區(qū)公路路基變形觀測結(jié)果一致99精品无码视频。

The frost heaving and thaw settlement processes have the critical effects on the civil engineering in the cold regions. In the global scale, these phenomena still lead to the primary disaster problems, in despite of some progresses on the study of freeze-thaw action.

盡管凍土凍融過程的研究已經(jīng)取得一些進(jìn)展同人漫18禁福利网站，但迄今為止，隨凍融過程而發(fā)生的凍脹和融沉問題仍然是引起寒區(qū)道路工程病害比較突出的問題在线无码AV网站每日更新。

The thermal regime of soils along the pipeline route will be severely disturbed due to the heat exchange between the oil flowing in the pipeline and the ambient soils. Therefore, the oil pipeline will suffer from the frost heaving and thaw settlement.

原油輸運過程中由于管道與周圍土體之間發(fā)生的熱交換性受天堂，使得原有土層中的熱交換機制被打破，凍土區(qū)常溫原油管道工程基礎(chǔ)將面臨融沉和凍脹災(zāi)害的雙重挑戰(zhàn)欧洲美女操逼视。

A series of closed simulated frost heaving experiments with medium sand and coarse sand of different clay contents were performed under different water contents,degree of saturations and dry densities.

對不同含泥量的中粗砂在不同含水量最新黄色网站在线入口、飽和度和密實度狀態(tài)下進(jìn)行了一系列閉式凍脹模擬試驗，用數(shù)理統(tǒng)計方法分別研究了不同含泥量中砂和粗砂的凍脹率隨含水量變化規(guī)律欧美丰满熟妇XXXX性多毛，將中粗砂結(jié)合在一起進(jìn)行綜合分析800毛片，并將試驗結(jié)果與現(xiàn)行規(guī)范和其他文獻(xiàn)進(jìn)行比較，指出兩者不同之處免费看美国牲交毛片。

Besides, the stress state of oil pipiline suffered from the frost heaving hazard was predicted by finite element numercial simulation. When the design pressure is 10 MPa, the pipe wall thickness should be no less than 14.2mm.

對于采用X65鋼級螺旋縫埋弧焊鋼管和直縫埋弧焊鋼管的中俄原油管道工程丝袜亚洲国产不卡，當(dāng)管道設(shè)計壓力為10MPa時久久黄色视频免费看，中俄原油管道設(shè)計壁厚應(yīng)不小于14.2mm。