Rock mass drilling sampling stress fidelity device and method under high ground stress

The invention relates to a rock mass drilling sampling stress fidelity device and method under high ground stress. The rock mass drilling sampling stress fidelity device includes a drill bit, sawteethfor cutting a rock mass is arranged at the top of the drill bit, the drill bit is mounted on the head part of a drilling machine, a threaded rod is arranged inside the drilling machine in a penetrating mode, the drilling machine is internally provided with a high-strength blade for cutting the rock mass, and the drilling machine is internally provided with a rotating rod penetrating through the high-strength blade; and a steel rod is mounted on the position, penetrating through the drill bit, in the drilling machine, a first spring is mounted on the other end tip of the steel rod, a sphere isconnected to the other end of the first spring, the other end of the sphere is matched with the raised part of a sawtooth groove in a contact mode, second springs are evenly arranged at the two endsof the sawtooth groove corr