人工地层冻结的环境效应及其工程对策

Study on the Environmental Effect and Engineering Measures for Freezing Method

以应用较广泛的人工地层冻结法为例,从人工冻土环境效应的角度,分析冻土的重要物理力学特性如冻胀、冻胀力和融沉的作用机理,探讨适当的工程对策以控制或减少这些因素对环境的影响,最后通过地铁工程实例进一步说明这些因素与环境相互作用的规律,为拓宽人工地层冻结法在复杂环境中的应用提供参考。

As an example for widespread application of freezing method, the vital physical-mechanical properties and mechanism of frozen soil such as frost heave,the force of frost heave,thawing settlement are presented in this paper according to the environmental effect of artificial frozen soil.The suitable methods to control or reduce the environmental effects caused by freezing are then discussed.In the end of the paper,an example from the subway in Shanghai with the freezing method is analyzed to confirm the interaction between these factors and environment.It provides reference for the application of freezing method in complicated environment..