Page - 309 - in Book of Full Papers - Symposium Hydro Engineering

PROFIL REFERENSI TARGET PROFIL SEDIMEN 17 292 290 288 286 284 282 294 484032241680 64 72 80 86 94 102 110 120 128 136 144 15256 PROFIL REFERENSI EL.+281.00 TARGET PROFIL SEDIMEN EL.+289.50 HWL EL. +292,50 H = 1 : 500 80,0027,48 Dredging Work Dry Excavation 3 4 18 19 20 16 17 14 15 12 13 111 0987 65 1 2 139,87 1 2 3 1 5 0 ,0 0 1 5 0 ,0 0 8 0 ,0 0 8 0 ,0 0 2 7 ,0 0 2 7 ,0 0 DREDGING WORK DRY EXCAVATION KALI BRANTAS K A L I L E S T I B A M B O O F E N C E BRANTAS RIVER LESTI RIVER Dredging Work Dredging Work Dry Wet Excavatio n A. COMBINATION OF 2 DREDGING TYPES USING AVAILABLE DREDGERS AND ADDITIONAL HEAVY EQUIPMENT (AMPHIBIOUS EXCAVATORS) Seeing the condition of the sediment surface in Sengguruh Dam is not evenly distributed in the entire pool area of the reservoir. In some areas the sediment elevation conditions to the water elevation are shallow enough with a depth of 0.5-1 m whereas deep conditions are found in areas that are the main river channel with a depth of more than 1m. This condition causes the dredger can not reach the shallow areas due to the limited draft of the ship and the minimum reach of the dredger ladder. Overcoming this need to be combined using amphibious excavators because the tool can operate in a wetland area that is not too deep or called dry-wet excavation. Figure 6. General Plan Dredging Work Combine with Dry Wet Excavation Combinaison du travail de dragage du plan général avec l'excavation humide à sec 309