Abstract:
Frost heaving can be approximately taken as an axisymmetric problem to solve the relation expression between freezing time and freezing radius by considering the phase transition and heat transfer in the freezing process of the soil. Taking the Zhengzhou Compressor Station in West-to-East Gas Pipeline as an example, the relation expression between freezing time and frost heave radius, freezing speed, maximum frost heave radius, pipeline axial frost heave range are calculated, and the calculated results are compare with that of Browning model and corrected Carslaw-Jaeger. Conclusions show that the differences between the prediction of frost heaving by this formula and that of actual situation are small; the increasing speed of frost heaving thickness will drop rapidly with the lapsing of time; the frost heaving thickness will continue to decrease with the extension of horizontal distance.