Water conservancy project detection sample collection equipment and collection method thereof

The invention discloses water conservancy project detection sample collection equipment and a collection method thereof, and relates to the technical field of water conservancy detection.The water conservancy project detection sample collection equipment comprises an open box, a pair of fixing frames are fixedly arranged on the upper face and the lower face of the open box, four pairs of fixing supports are fixedly arranged on the opposite faces of the pair of fixing frames, and a pair of fixing rings is fixedly arranged on each fixing support; collection cylinders are clamped in the fixing rings; fixing shafts are rotationally inserted into the middles of the four side faces of the open box, and the outer ends of the fixing shafts are connected with the four collecting cylinders on the corresponding sides in a meshed mode through meshing mechanisms; a fixing plate is fixedly arranged on the lower middle portion in the open box, a fixing sliding rod is fixedly arranged in the middle of the fixing plate, the f