Safety device for geological survey

The utility model discloses a safety device for geological survey, including bottom plate and protective barrel, the telescoping device is installed to protective barrel's upper end. In using, overlapthe bottom plate on the well head, the well head is aimed at to the round hole, and be greater than the diameter of well head, the rotating swing arm, the swing arm drives the bull stick, thereby itrotates to drive the spiral leaf, the bottom entry ground of bull stick, screw in slowly, the baffle supports on the bottom plate after that, thereby PMKD, the spiral leaf is for general nail, the firmness of connecting has been increased, prevent that protective barrel from turning on one's side, the exploration part is put into from protective barrel's upper end, along entering into in the pit,explore, thus, under protective barrel's effect, the people is difficult to fall into in the pit, and simultaneously, because protective barrel's protection, the exploration part is difficult to hinder to the people when rising