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Analysis of temperature controlled ventilated embankment

机译：温控通风路堤分析

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摘要

A temperature controlled ventilated embankment (TCVE) of roads or railroads is proposed as an attractive engineering approach in permafrost regions. Comparing the measuring results in ventilated embankment (VE) with same conditions, which nearby TCVE testing fields, we demonstrate that in two testing fields with 30-cm and 40-cm diameter controlled vent ducts, the permafrost table raised by 0.3 m and 0.7 m, respectively. The average temperatures at the bottom of vent ducts decreased by 1.11℃ and 1.52℃, respectively. The corresponding decrease at the bottom of the embankment was 0.5℃ and 0.7℃. Compared to VE, the thawing period was cut down nearly 20 days and the time, during which heat was lost by embankment, was prolonged by more than a month. The heat flux into the permafrost beneath the embankment was reduced by nearly 1/4 in the filed with the 30-cm ducts and by almost 1/2 in the 40-cm field. TCVE vent duct diameter has no more influence on cooling efficiency in testing region.
机译：公路或铁路的温控通风路堤（TCVE）被提出作为多年冻土地区的一种有吸引力的工程方法。比较附近TCVE测试场在相同条件下的通风路堤（VE）的测量结果，我们证明在两个直径分别为30 cm和40 cm的受控排气管的测试场中，永久冻土台分别升高了0.3 m和0.7 m ， 分别。通风管底部的平均温度分别降低了1.11℃和1.52℃。路堤底部的相应下降分别为0.5℃和0.7℃。与VE相比，解冻期缩短了近20天，路堤散失热量的时间延长了一个多月。在30厘米长的管道中，进入路堤下方永久冻土的热通量减少了近1/4，而在40厘米长的领域则减少了近1/2。 TCVE通风管直径不再对测试区域的冷却效率产生影响。

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