Author(s): Bambang Sulistiono; Khalis Fatmawati
Linked Author(s):
Keywords: Ecodrainage; Permeability; Infiltration well; Effectiveness
Abstract: The increasing of population is directly in proportional with the increasing needs of human for settlements, particularly in the urban areas. It affects to the reduction of open land and its capacity to infiltrate the rain and surface water into the ground. The rainwater that should be conserved into the soil will be flooded or wasted into the river and conventional drainage channel. In this study, the drainage system of the certain area will be improved into the eco-drainage innovation to conserve rain water. Implementation of eco-drainage is conducted by installing the infiltration well along the study area. This research aims to observe the discharge that flows into the river body before and after the implementation of infiltration well and to measure the effectiveness of the system. The average rainfall data is computed using hydrological isohyet method, while the flow discharge to the drainage channel is calculated by the rational method. The soil permeability value is obtained by the in situ assays based on the SNI-03-3968-1995. The infiltration wells are constructed using waterproof wall and flat-permeable bottom portion. The results indicate that the effectiveness of infiltration wells reaches 100%, 95.53% and 81.52% of a2, 5 and 10 years of return period.
Year: 2018