Method for preparing rock column

The invention relates to a method for preparing a rock column, in particular to a preparation method for measuring the dimensional change of the rock column in multiple directions. The method comprises the following steps: (1) cutting a rock column of a certain size by using a cutting machine; (2) punching in the center of a cross section at two ends of the rock column; (3) punching at axisymmetric positions of the side face of the rock column; (4) filling the hole with cement paste; (4) inserting a measuring part in the hole. According to the method disclosed by the invention, three different directions are selected, and the accuracy of the experimental data is ensured. 本发明涉及种岩石柱的制备方法，尤其涉及种需测量岩石柱多个方向尺寸变化的制备方法：（1）使用切割机切割定尺寸的岩石柱；（2）在所述的岩石柱两端横截面的中心处打孔；（3）在所述岩石柱侧面轴对称位置处打孔；（3）向孔中填充水泥浆；（4）向孔内安插测量件。本发明选用三个不同的方向，保证实验数据的准确性。