Sampling drill bit for water conservancy project survey

The utility model relates to the technical field of water conservancy project survey, in particular to a water conservancy project survey sampling drill bit which comprises a drill bit body, a transmission rod is connected to the end face of the drill bit body, and a conveying screw is arranged on the side wall of the transmission rod and located above the drill bit body. A sampling assembly is arranged on the side wall of the transmission rod and located above the conveying screw, a soil sample on the conveying screw is scraped off through the arranged sampling scraping plate, the soil sample is fed into the sampling barrel under the action force applied by the subsequent soil sample, and the sampling work is completed; therefore, the problems that an existing water conservancy project survey sampling drill bit is simple in structure, after soil is crushed, a worker needs to collect a soil sample through a tool, much time needs to be wasted in the collecting process, and manpower is wasted are solved, the sa