Drilling hole vertex angle measurement-while-drilling device for mine drilling

The utility model discloses a measurement-while-drilling device for the vertex angle of a mine drilling hole. The measurement-while-drilling device comprises a closed resistance cavity, a plurality of resistance tapes are uniformly distributed on the inner wall of the resistance cavity, and the resistance cavity is filled with mercury with a certain volume; a plurality of resistance band electrodes connected with the resistance band are led out from one end of the resistance cavity, and a common electrode is led out from the other end of the resistance cavity; when in use, the measurement-while-drilling device for the vertex angle of the mine drilling hole is fixedly arranged in a drill rod, and when the vertex angle of the mine drilling hole occurs, the resistance cavity has a corresponding vertical inclination angle along with the drill rod, but the upper surface of mercury in the resistance cavity is kept in a horizontal state; therefore, the lengths of the plurality of resistance bands submerged by mercur