하이드로폰을 이용한 소류사 계측에 관한 기초실험

Like flow rate, sediment discharge is the most basic data in river maintenance and must be put into consideration in water resource plans or management so reliable calculations are demanded. Domestically, the most representative method for measuring bedloads is the mechanical bedload sampling method which uses bedload samplers. However, the mechanical bedload sampling method requires a lot of manpower, expenses, and time, and while actual measurements are not easily made, it involves uncertainty and a lack of accuracy in its results such as in the way it changes transfer conditions of the bedload by disturbing the riverbed regardless of the size of the equipment lowered into the river bed. To supplement such problems, research in foreign countries is actively being progressed using hydrophones, equipment which observes bedload volumes indirectly by acquiring and interpreting sound data that occurs when silt collides into metallic tubing with an embedded microphone. This study uses a hydrophone to perform basic experiments to grasp basic characteristics of the hydrophone and the scope of application for bedload volume calculations by particle-size and presents those results.