论温度变化对渗透压力的影响

Influence of temperature variation on seepage pressure

本文分析了温度变化对渗透压力影响的机理,指出某些水工建筑物的测压管水位异常的主要原因在于:通常的渗流理论、渗流分析方法没有考虑温度变化的影响。 温度变化对渗透压力影响的程度,随渗流场的渗流条件不同而不同,在一定的条件下,这一影响十分明显,有时甚至起着决定性的作用。更值得注意的是,温度变化对建筑物的稳定、安全有着不利影响。

This paper analyses the machanism of the influence of temperature variation on seepage pressure and points out that the abnormality of pi-ezometric readings in some hydraulic structures is caused by ambient temperature variation which is usually not considered in seepage theories and seepage analysis.The degree of influence of temperature on seepage pressure varies with seepage conditions.In some hydraulic structures,the influence is evident and should be take into consideration in the analysis,