Page - 875 - in Book of Full Papers - Symposium Hydro Engineering

The results of the hydraulic flow obtained from the test model still needs a further study that is to model the flow condition when it returns to the river and to map scouring pattern in the downstream stilling basin. Keywords: Cipanundan, test model, hydraulic parameters 1. BACKGROUND Cipanundan Dam is a dam that is subjected to irrigate the irrigation area in Kabupaten Cirebon and planned to construct soon. Dam reservoir area is located in Cipanundan river valley, at el. +26 m until el.+50 m extended from south to north. Cipanundan Dam axis is located between two hills, stratched along Cipanundan river. Type of Cipanundan Dam is homogenous soil type, dam height is about 24 m dan dam length is about 511 m. Spillway Cipanundan Dam located on the right toe with overflow type, and stilling basin type is USBR type 2. 2. PURPOSE AND OBJECTIVES The purposes of the hydraulic test model spillway of Cipanundan Dam are: 1) To establish the idea of planning in terms of hydraulic aspects (flow design and sediment transport) by studying and investigating the flow symptoms and parameters that occur. 2) To study and verify the layout of spillway designed to obtain hydraulic design properly, 3) To determine of optimum type, form and dimension of energy dissipator and appurtenance structure, The objective of this hydraulic test model spillway of Cipanundan Dam is to provide a refined recommendation based on hydraulic aspect, so that deviations may occur during desgining, it can be eliminated from the test model and will obtain the most optimal hydraulic structures dimension. All of these stages are to guaranty of dam safety and function. 875