Coal mine operation detection device

The utility model relates to the technical field of coal mine detection devices, in particular to a coal mine operation detection device which comprises a detection device shell, a hole digging drill bit and a sampling drill bit. One side of the first telescopic transmission shaft is fixedly connected with a hole digging drill bit, a second driving motor is arranged at the lower end of the first driving motor and connected with a second telescopic transmission shaft through a second coupler, and one side of the second telescopic transmission shaft is fixedly connected with a sampling drill bit. According to the device, the stability during detection is improved through the design of a plurality of hydraulic telescopic supporting legs, the stability during sampling is further improved through a supporting rod in a sampling drill bit, the sampling efficiency is improved, a sampled sample can enter a collecting pipeline through a discharging opening and then is conveyed to a drawer, the detection work flow of wo