摘要
辽西地区由于其特殊的地理环境和气候条件，形成大量的风积土。该风积土具有很强的冻胀作用，造成道路的大量冻害。为对这种风积土冻害进行研究和预报，根据对辽西地区水文、地质、气候环境的重点分析，找出了风积土冻结时温度的改变状态。分析结果表明，辽西地区风积土冻结时温度有所降低。随着土体粒径的减小、含水量的降低，风积土冻结时温度降低就越大。同时，从热力平衡条件之——各共存相化学潜能相等推导了计算辽西地区风积土冻结时温度降低的公式，根据此公式计算了辽西地区风积土冻结时温度降低大约在（0．03～5．30）℃。
Due to its special geographical and climatic conditions in western Liaoning region, a large number of aeolian soil is formed. This sort of aeolian soil has strong freezing and swollen feature, which causes much freezing harm to the road. In order to research and forecast the aeolian soil freezing harm, the temperatures change state is found when the aeolian soil freeze which is based on Western Liaoning region＇s hydrology, geology, climate environmental focus analysis. The results of the analysis show that the soil temperatures reduced when the aeolian soil of the Western Liaoning region freeze. With the reducing of the diameter of the soil and the decreasing of the water content in the soil, the degree of the temperature reducing in the freezing aeolian soil is greater. And this from the heat balance condition of the coexistence chemical potential of the computing equivalent deduce the formula of calculating the Western Liaoning territories freezing aeolian soil temperature lower, according to the formula the calculation of result of the Western Liaoning territories freezing aeolian soil temperature lower is about 0.03 - 5.30℃.
出处
《科学技术与工程》
2007年第5期687-690,共4页
Science Technology and Engineering
基金
国家自然科学基金(50478033)
辽宁省教育厅科学技术研究项目(2004D120)资助
关键词
风积土
冻结
化学潜能
道路
aeolian soil freezing chemical potential road
