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| ANALYSIS ON GROUND TEMPERATURE CHANGES OF THE SOILS UNDER DUCT-VENTILATION EMBANKMENT OF QINGHAI-TIBET RAILWAY |
| NIU Fu-jun, MA Wei, LAI Yuan-ming |
| State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute |
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Abstract Based on two year's data of ground temperature monitored at Beiluhe section of the Qinghai-Tibet Railway, where field-testing embankment was constructed, the engineering effect of duct-ventilation embankment is discussed through analyzing ground temperature changes. Results indicate that duct-ventilation embankment is available to protect the underlying permafrost and even can extend it. It is also Shawn that it is better to bury ducts near the initial ground surface, so that the engineering effect of ventilation embankment can be advanced.
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Received: 02 September 2003
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2003, Vol. 20 
