油页岩试样在循环冻融条件下破裂实验研究

由于油页岩原位破碎研究对于油页岩传热效率的提高具有重要的意义，提出了一种油页岩原位破碎室内研究方法，即循环冻融法。本文主要论述了其实验机理、实验台的设计、实验岩样的制备，实验数据的采集与分析等。此次循环冻融实验主要由工程模拟单孔时循环冻融法研究油页岩试样裂缝扩展情况，根据设计要求完成2组试样的制备以及相关实验台的设计，并采用了超声波检测的手段对完成每一实验阶段油页岩试样进行检测，为油页岩原位破碎研究提供一种可行的实验方案，对油页岩传热效率的研究具有一定的参考意义。

Experimental Study on Oil Shale Samples Fragmentation under Freezing-thawing Cycle

In view of the important significance of the study on oil shale in-situ fragmentation for improving the heat transfer efficiency, an indoor research method of oil shale fragmentation was put forward, namely freezing-thawing cycle method. The experimental mechanism, experiment table design, sample preparation, experimental data acquisition and analysis etc. were discussed in this paper. The freezing-thawing cycle experiment was carried out on oil shale crack propagation in single hole mainly by engineering simulation. According to the design requirements, 2 groups of specimen were prepared and the experiment table was established. Simultaneously, the used oil shale samples in each experiment stage were detected by ultrasonic detection method, which provides a feasible experiment scheme for oil shale in-situ fragmentation research and can be taken as reference to the heat transfer efficiency of oil shale research.