Drill falling prevention coring device for geological environment detection

The utility model discloses an anti-drill-falling coring device for geological environment detection, which comprises a drill core, a hexagonal barrel in sliding connection with the middle of the drill core, a sliding hole arranged at the center of the hexagonal barrel, a pressure plate fixedly connected with the lower portion of the hexagonal barrel, a through hole fixedly arranged on the upper surface of the pressure plate, external threads arranged on the cambered surface of the pressure plate, and internal threads matched with the external threads. The internal threads are arranged on the inner side face of the drilling machine installation opening. According to the utility model, the locking disc locks the drilling core by virtue of the matching of the screw and the nut, and then the locking disc is fixed in the drilling machine mounting port by virtue of the pressing disc, so that the purpose of fixing the drilling core is achieved, and the pin hole formed in the surface of the hexagonal barrel further