Anti-deviation mechanism for hydrological hole forming

The utility model relates to the technical field of geological monitoring, and discloses a hydrological hole forming deviation prevention mechanism which comprises a positioning pipe, a guide pipe coaxially arranged on the outer side of the positioning pipe and a limiting piece for fixing the positioning pipe in the guide pipe. And the positioning piece is arranged at the end part of the guide pipe and is used for fixing the guide pipe at the bottom of the hydrological hole. According to the invention, the possibility of deviation of the positioning pipe and the optical fiber can be reduced. 本申请涉及地质监测的技术领域,公开了一种水文孔成孔防偏位机构，其包括定位管、同轴设置于所述定位管外侧的导向管，以及将所述定位管固定于所述导向管内的限位件，还包括设置于所述导向管端部用于将所述导向管固定于水文孔底部的定位件，本申请能够减少定位管以及光纤发生偏移的可能。