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CNKI为你找到相关结果

Research on the thermal stability of frozen soil emban...  CNKI文献

The Chaidaer-muli Railway(abbreviated as Chaimu Railway)is located in the northeast of Qinghai-Tibet Plateau,where is covered widely by the permafrost in the mid-latitude area.The railway is 142.04 k...

Xianfu DONG Liping SUN... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: heat / pipe / convection / embankment

下载(6)| 被引(0)

Pressuremeter test in warm and ice-rich permafrost  CNKI文献

In order to investigate the in-situ mechanical behavior of warm and ice-rich frozen soils,a series of pressuremeter tests were carried out in permafrost regions on the Qinghai-Tibetan Plateau.Based o...

Hu ZHANG Jianming ZHANG... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: Qinghai-Tibetan / Plateau / pressuremeter / test

下载(4)| 被引(0)

The impact of freeze-thaw cycles on the dynamic charac...  CNKI文献

Based on the test result of Qinghai-Tibet clay before and after freeze-thaw cycles under long-time cyclic dynamic loading,following conclusion can be drawn.The change rule of the accumulative strain ...

Shu-ping ZHAO Wei MA... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: freeze-thaw / cycles / long-time / cyclic

下载(1)| 被引(0)

Methodology of study on freeze-thaw cycling induced ch...  CNKI文献

Freeze-thaw action is an important topic in cold regions engineering,which results in moisture and solute migration and re-distribution,thus changes in physical and mechanical properties.On the basis...

Wei MA Lili FANG... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: review / freeze-thaw / cycles / engineering

下载(4)| 被引(0)

Physical changes of five types of rock in the Qinghai-...  CNKI文献

Rocks,including the clastic rock,mudstone,sandstone,granite,andesite,were used to the protecting-slope and berms of the Qinghai-Tibet Railway,as the rock layers have good effect on protecting permafr...

Fujun NIU Hua LIU... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: freeze-thaw / ultrasonic / wave / physical

下载(8)| 被引(0)

Radiation effect analysis of the awning measure on the...  CNKI文献

Because the higher elevation and better atmospheric transparency,the Qinghai-Tibet plateau have stronger radiation than other regions,which can make the ground surface temperature daily variation cha...

Wenjie FENG Wei MA... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: cold / regions / embankment / shading

下载(1)| 被引(0)

Hysteretic energy and temperature behavior of frozen s...  CNKI文献

Based on the results from a series of testing with temperature monitored,using embedded thermistor temperature sensor in frozen specimen during cyclic compressive loading,it is known that,when the en...

Shujuan ZHANG Zhizhong SUN... Proceedings of the IX International Symposium on Permaf... 2011-09-03 国际会议

关键词: frozen / soil / cyclic / loading

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LABORATORY STUDY ON COOLING EFFECT OF CRUSHEDROCK EMBA...  CNKI文献

Crushed-rock embankment has been utilized as a method for avoiding thaw settlement of roadway in warm permafrost regions.Its cooling effect has been recognized.However,infield,the crushed-rock embank...

Mingyi Zhang Yuanming Lai... Proceedings of the seventh International Symposium on P... 2007-11-21 国际会议

关键词: rock / LABORATORY / STUDY / ON

下载(0)| 被引(0)

APPLICATION OF CT TESTING TECHNOLOGY IN EVALUATING THE...  CNKI文献

Some conclusion can be drawn from the CT test result of silty clay samples,which are made by little-pressing specimen-preparing method.First,the surveyor's mass absorbing coefficient of soil grai...

Zhao Shuping Zhen Jianfeng... Proceedings of the seventh International Symposium on P... 2007-11-21 国际会议

关键词: than / APPLICATION / OF / CT

下载(2)| 被引(0)

CHANGES IN MECHANICAL PROPERTIES OF A QINGHAITIBETAN S...  CNKI文献

Freeze-thaw can lead to changes in engineering properties of soils.This will have certain impacts on cold regions engineering.In this paper,a frost-susceptible soil,a typical silty clay obtained alon...

Yao Xiaoliang Qi Jilin... Proceedings of the seventh International Symposium on P... 2007-11-21 国际会议

关键词: CHANGES / IN / MECHANICAL / PROPERTIES

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FIELD OBSERVATION ON SETTLEMENT PROCESS OF PRECAST INS...  CNKI文献

The settlement process of a precast installed culvert along the Qinghai-Tibet railway is monitored,it is found that the culvert settles with a decreasing speed,the settlement near the two ends is les...

Niu Yonghong Ma Wei... Proceedings of the seventh International Symposium on P... 2007-11-21 国际会议

关键词: permafrost / precast / installed / culvert

下载(3)| 被引(0)

从工业木精制取高纯度甲醇  CNKI文献

工业甲醇,尤其所谓木材化学的木酒精,常被各种杂质沾污,很难进行净化,甚至在有2.5米柱高(带玻璃圈填料)及冷凝管的装置中分馏2-3次以后,仍旧保持着特有的刺鼻气味,显著地含有羰基化合物,与2,4-二硝基苯肼溶液产生沉淀...

А Л... 《化学世界》 1955年09期 期刊

关键词: 甲醇 / 甲苯 / 一元醇 / 芳基甲烷

下载(19)| 被引(0)

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