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高温多年冻土
相关语句
  high temperature permafrost
     Simulative analysis on heat stability of embankment in high temperature permafrost district of eastern Tibetan Plateau
     青藏高原东部高温多年冻土区路基热稳定性模拟分析
短句来源
     In the layer beyond the direct affect of the air temperature,the temperature decreasing (refreezing) process is quite slow, so it is difficult for the thawing high temperature permafrost around the cast-in-place pile in group to refreeze in the short construction period.
     高温多年冻土地段钻孔灌注桩群桩基础周围土体的温度,在有限的施工期内不能回冻到初始温度状况。
短句来源
     Reference basis is provided for the stability of land bridge along Qinghai—Tibet Railway and the design and construction of pile foundation in high temperature permafrost regions.
     此研究为预测青藏铁路旱桥桩基稳定以及高温多年冻土桩基的设计与施工提供参考依据。
短句来源
  “高温多年冻土”译为未确定词的双语例句
     The reason is that the effect of engineering activity on permafrost has an enlarging action as compared with the effect of climate change in several years after a construction completion.
     气候变化引起的低温多年冻土变化要大于工程对其的影响, 而高温多年冻土正好相反.
短句来源
     About one-half of the permafrost area traversed by the Qinghai-Tibet Railway is warm permafrost with a mean annual ground temperature of 0 ~-1 ℃,and around 40% is ice-rich permafrost.
     青藏铁路穿越550 km多年冻土,其中约一半为高温多年冻土,其年平均地温为0~-1℃.
短句来源
     The full length of the Qinghai-Tibet Railway(QTR) is 1 142 km,of which 550 km cuts across permafrost regions,275 km in warm(0--1.0 ℃) permafrost regions and 221 km in ice-rich permafrost regions. To protect permafrost from thawing,the two-phase closed thermosyphon is applied.
     青藏铁路要穿越550 km长的多年冻土区,其中年平均地温>-1.0℃的高温多年冻土路段275 km,高含冰量冻土类型路段长221 km.
短句来源
     Therefore,it is proposed that in warmer permafrost regions,the insulation should be used to increase the cooling effect of embankment with crushed-rock revetment.
     因此,建议在高温多年冻土区使用抛石护坡路基结构时,应考虑使用保温材料作为一种对抛石护坡路基进行保温补强的措施.
短句来源
  相似匹配句对
     hyperthermia
     高温技术
短句来源
     AN EXPERIMENTAL STUDY ON DEFORMATION OF RAILWAY EMBANKMENT IN HIGH-TEMPERATURE AND FINE-GRAINED PERMAFROST REGIONS ALONG THE QINGHAI—TIBET RAILWAY
     青藏铁路高温细粒多年冻土路堤变形试验研究
短句来源
     Simulative analysis on heat stability of embankment in high temperature permafrost district of eastern Tibetan Plateau
     青藏高原东部高温多年冻土区路基热稳定性模拟分析
短句来源
     OUTLINE OF THE PERMAFROST IN QINGHAI—TIBETAN-PLATEAU
     青藏高原多年冻土概论
短句来源
     Study on High-Temperature Adhesives Yu Shuyong
     高温胶的研究
短句来源
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It is a very difficult to solve roadbed deformation in permafrost regions, especially thaw settlement in warm permafrost regions. Thawing and temperature rising due to asphalt pavement has a great influence on roadbed stability. In order to study the process of roadbed deformation for different permafrost types and geophysical environments, roadbed deformation was monitored. There are three monitoring sections with uniform vertical and transverse observation directions and spaces. Each section has four transverse...

It is a very difficult to solve roadbed deformation in permafrost regions, especially thaw settlement in warm permafrost regions. Thawing and temperature rising due to asphalt pavement has a great influence on roadbed stability. In order to study the process of roadbed deformation for different permafrost types and geophysical environments, roadbed deformation was monitored. There are three monitoring sections with uniform vertical and transverse observation directions and spaces. Each section has four transverse profiles consisting of 5 monitoring points. The relative deformation is monitored by transit instrument for three years since 1998. It is observed twice a month. The following conclusions are obtained: ;(1)Both vertical and transverse deformations due to permafrost thawing show a positive non-uniform feature, with the maximum deformation in the road should other than in the central of roadbed due to the shift of the maximum thaw depth to the road should. ;(2)roadbed deformation of frozen soils includes frost heave and thaw settlement. Extensive frost heave occurs from December to January. Extensive thaw settlement occurs from April to July. In other months roadbed deformation is in the way of slow frost heave or thaw settlement.;(3)roadbed deformation mainly depends on mean annual ground temperature and engineering geological conditions of permafrost. For warm permafrost with mean annual ground temperature high than {-1.5} ℃, roadbed deformation extensively change with mean annual ground temperature. Roadbed deformation mainly appears in the section with high ice content, and the larger the ice content, the larger the thaw settlement.;(4)Non-uniform deformation of roadbed under thawing is due to the effect of asphalt pavement on permafrost. Its essential is that the absorption of asphalt pavement can results in engineering geological conditions worse, because of continuously changing permafrost thermal regime, permafrost temperature rising and ground ice thawing.

通过对现场实体工程的长期监测资料和路基破坏机理分析研究 ,使我们对沥青路面对多年冻土的严重影响 ,导致多年冻土的升温与退化 ,使路基产生较严重的不均匀下沉变形 ,及其它所引起的一系列路基病害问题的发生发展过程有了较为系统和深刻认识 ,取得了大量现场实测资料及研究成果 .讨论了高温多年冻土地区冻土路基的变形特征 ,以及冻土路基变形与工程地质条件的关系 ,给出了路基随地温波动变化而发生的变形过程

The thermal offset and permafrost table temperature are important energy indexes in studying permafrost active layers and frost soil environment. The suitability of the thermal offset and permafrost table temperature model generally adopted abroad is discussed in this paper, and the model is applied to the eight frost soil sections along the line of the Qinghai-Tibetan Highway, where ground temperature is monitored. Calculation indicates that the thermal offset and permafrost table temperature similar model...

The thermal offset and permafrost table temperature are important energy indexes in studying permafrost active layers and frost soil environment. The suitability of the thermal offset and permafrost table temperature model generally adopted abroad is discussed in this paper, and the model is applied to the eight frost soil sections along the line of the Qinghai-Tibetan Highway, where ground temperature is monitored. Calculation indicates that the thermal offset and permafrost table temperature similar model can be used to forecast low temperature permafrost (annual mean ground temperature lower than \{-1.5℃\}). However, for high temperature permafrost ( annual mean ground temperature higher than \{-1.5\} ℃) this model is unsuitable.

温度位移和多年冻土顶板温度是活动层研究和冻土环境研究中重要的能量指标 .主要讨论国外普遍采用的温度位移和多年冻土顶板温度近似模型的适用性 ,并在青藏公路沿线 8个冻土地温监测断面中应用模型进行计算 .结果表明温度位移和多年冻土顶板温度近似模型能够被用于预报低温多年冻土 (年平均地温低于 - 1.5℃ ) ,对于高温多年冻土 (年平均地温高于 - 1.5℃ )该模型不适用 .

Monitoring of permafrost change due to climate change and engineering activity along the Qinghai-Tibet Highway shows that there is a large difference in the response of permafrost to climate change and engineering activity, which obvious varies with mean annual ground temperature. The change in cold permafrost is more significant than that in warm permafrost due to climate change. However, the change in cold permafrost is less significant than that in warm permafrost due to engineering activity. The effect of...

Monitoring of permafrost change due to climate change and engineering activity along the Qinghai-Tibet Highway shows that there is a large difference in the response of permafrost to climate change and engineering activity, which obvious varies with mean annual ground temperature. The change in cold permafrost is more significant than that in warm permafrost due to climate change. However, the change in cold permafrost is less significant than that in warm permafrost due to engineering activity. The effect of climate change is larger than that of engineering activity for cold permafrost, but it is just contrary for warm permafrost. The reason is that the effect of engineering activity on permafrost has an enlarging action as compared with the effect of climate change in several years after a construction completion. As a result, the response of permafrost under an engineering state to climate change becomes insensitive. Inferred from the annual ratio of permafrost temperature rising due to climate change, it is required 50 years for cold permafrost surface temperature and 20 years for warm permafrost surface temperature rising to the engineering state; it is required 20 years for cold permafrost temperature and 5 to 8 years for warm permafrost temperature at the depth of 6 m rising to the engineering state. Therefore, warm permafrost will experience the effects of both climate change and engineering activity in several years after a construction completion, but clod permafrost requires much more time to experience the two effects. It is significant important to consider the effect of climate change on permafrost for an engineering in permafrost regions.

青藏公路沿线工程和气候变化影响下多年冻土变化监测表明, 多年冻土对工程活动和气候变化的响应过程存在着较大差异, 不同年平均地温的多年冻土使这种差异变得更为明显.分析结果表明:气候变化下低温多年冻土变化要大于高温多年冻土, 工程状态下低温多年冻土变化要小于高温多年冻土; 气候变化引起的低温多年冻土变化要大于工程对其的影响, 而高温多年冻土正好相反.造成这一结果原因主要是由于在工程建设完成初期, 相对于气候影响, 工程作用对多年冻土的影响具有放大作用,这使得工程状态下多年冻土对气候变化基本没有响应. 按照气候影响下多年冻土温度年变化速率来推测, 低温多年冻土表面温度升温到工程状态需要50 a左右时间, 高温多年冻土需要 20 a左右. 6 m深的低温多年冻土温度升温到工程状态需要20 a, 高温多年冻土仅需要5~8 a.

 
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