Testing device and method of soil anchor drawing

The invention relates to a testing device and method of soil anchor drawing. The testing device comprises a bottom plate assembly of which the hole diameter can be changed, and a bearing table is supported and mounted above the bottom plate assembly through a plurality of supporting pillars; a jack is mounted at the top of the bearing table; and an anchoring body and a soil body for a drawing testare arranged at the bottom of the bottom plate assembly. According to the testing device, different overlying soil pressure is acquired by changing the hole diameter, the soil bodies of different depth ranges can be simulated, and the depth of an anchor hole is greatly decreased. 本发明涉及种土锚拉拔的试验装置及方法，它包括可变换孔径的底板组件，所述底板组件上方通过多根支撑柱支撑安装有承压台，所述承压台的顶部安装有千斤顶，所述底板组件的底部设置有用于拉拔试验的锚固体以及土体。该装置通过改变孔径大小得到不同的上覆土压力，可以模拟不同深度范围的土体，很大程度缩减锚洞深度。