Silt thickness sensors and method for measuring thickness of silt in river channels or channels with same

The invention relates to silt thickness sensors and a method for measuring thickness of silt in river channels or channels with the same, in particular to special sensors and method for measuring thickness of silt in wider river channels or channels in the water conservancy industry. The technical scheme is as follows: a sealed case (1) of the silt thickness sensor is divided into upper and lowerparts, wherein the upper part is a hydraulic cavity (2) filled with pressure transmission media; the lower part is a sensor chamber (6) for placing a pressure sensor (3); a corrugated diaphragm (4) is arranged at the upper part of the sealed case and is the top wall of the hydraulic cavity; the corrugated diaphragm transmits the pressure to the pressure transmission media in the hydraulic cavity under pressure; and the pressure sensor converts the pressure signal to the electrical signal and outputs the electrical signal. The method is characterized by arranging the silt thickness sensors on a plurality of points at t