Large-channel high-precision sediment measuring device based on multiple layers

The utility model discloses a large-channel high-precision sediment measuring device and measuring method based on multiple layers, the large-channel high-precision sediment measuring device comprises two L-shaped fixing flat plates which are vertically and oppositely arranged, a horizontal supporting flat plate which is horizontally arranged is sleeved on the L-shaped fixing flat plates, the horizontal supporting flat plate is fixedly connected on the two L-shaped fixing flat plates through fixing knobs, and the two L-shaped fixing flat plates are fixed on the horizontal supporting flat plate. The two ends of the horizontal supporting flat plate are slidably connected with horizontal telescopic flat plates. The lower ends of the two L-shaped fixed flat plates are fixed on the two sides of the measuring box, and the measuring box is connected with the data acquisition and control terminal through the signal antenna; and the data acquisition and control terminal is electrically connected with the mobile displa