thaw. permafrost

与thaw. permafrost相关的网络例句 [注：此内容来源于网络，仅供参考]

Comparison results show that heat pipe work is not continuous but fluctuant in one work cycle about five months,its actual working time is two-thirds of one work cycle,the cooling effect of heat pipe subgrade in winter is obvious,which is good for the contained cool increase of soil body and improves subgrade heat stabilization,there is a decrease for its cooling strength with the increase of horizontal distance,its effective operating radius is 2.25 m,its maximum cooling strength is in evaporation segment in depth direction,which low the thaw sensitivity of permafrost in the seasonal thaw layer about permafrost table.

研究发现，热棒在约为5个月的工作周期内并非连续工作而呈波动式，实际工作时间为工作周期的2/3；热棒路基冬季降温效果明显，有利于路基土体冷储量增加，提高路基热稳定性；热棒在路基中的降温强度，水平方向随距离增大而衰减，有效作用半径为2.25 m，深度方向在热棒蒸发段最大，降低上限附近季节融化层冻土热融敏感性。

The key issues in the engineering stability of oil pipelines are frost heave and subsequent thaw settlement in permafrost foundations.

阿拉斯加输油管道工程取得成功的原因在于充足的科研投入、讨论和决策时间，以及最终采用的一系列创新设计来保护多年冻土和抑制融沉。

Engineering damages of embankment in permafrost regions are mainly caused by thaw settlement of permafrost.

多年冻土区道路病害主要是由路基下冻土温度升高融化下沉引起。

Embankment construction in permafrost zone, breaking with the outside surface of the original natural thermal balance, trigger a re-distribution of underground temperature, making the embankment on both sides of the natural surface permafrost thaw.

在多年冻土区修建路堤，打破了原来天然地表与外界的热力平衡，引起地下温度场重新分布，使得路堤两侧的天然地表下冻土的融沉。

The subgrade damages are divided into two-types: high subgrade and low subgrade damages. High subgrade damages of which are related to the embankment height and slope directions maily include longitudinal cracks and subgrade cracks. The higher of the embankment height, the greater of the happening rate. The mechanisms of high subgrade damages formation are analyzed by the observed dates of soil temperature within the embankment and damages survey. In warm permafrost regions, the damages are mainly caused by the formation and development of the thaw bulb and thaw layer. In cold permafrost regions, the damages are mainly caused by frozen bulges.

围绕这些病害特征及形成过程，提出了将多年冻土区填土路基病害分为低路基病害与高路基病害，目前青藏公路路基的病害形式主要表现为以纵向裂缝与路基开裂为主的高路基病害，并提出了高路基病害与路基高度及坡向直接相关，路基高度越高，高路基病害发生的几率越大；通过对高路基地温观测数据的分析，并结合高路基病害的调查结果，研究得出了不同地温区高路基病害的形成机理，提出高温冻土区主要是由于融化盘与融化夹层的形成与发展所引起的，低温冻土区主要是由于冻结核的形成与发展所引起的。