Author(s): Azizah Rachmawati; Suhardjono; Ussy Andawayati; Pitoyo Tri Yuwono
Linked Author(s):
Keywords: Shape factors; Insitu field permeability; Artificial recharge
Abstract: One of the efforts to conserve groundwater is by making an artificial recharge. There are several variables that determine in the process of impregnation include the flow of water into the well, the value of shape factors and the coefficient of in situ field permeability. In this research, the model of direct artificial recharge in the field with the most important parameters that need to be observed is the provision of input water debit into the wells. Therefore, to get the value of F (shape factor) variation on the height of the porous wall (L test) and the diameter variation of the artificial recharge (R), the water level decrease (H1 and H2) and the decrease of water level (T1 and T2). The size of the depth of the well is 1 meter with the wall made of top concrete buis with 3 diameter variations and the bottom porous wall with 3 depth variations. The buis of concrete used has a cross-section of 0.60 m, 0.80 m and 1.00 m, the height of the porous wall or L test. The value of permeability of soil obtained by direct drilling of the research area in Sukolilo Village, Malang Indonesia. Field permeability was obtained by using Auger Boring falling Head method with a soil depth of 0.00 to 2.65 m. The results of the research indicate different permeability values at each site. The K value at depth 0.00 - 0.50 m is 0.00124 cm/sec, the depth of 1.30 m is 0.000286 cm/sec, the depth of 1.44 m is 0.0278 cm/sec, the depth of 2.25 m is 0.00397 cm/sec, the depth of 2.45 m is 0.00263 cm/sec and the depth of 2.65 m is 0.00235 cm/sec. While the type of soil indicated in the bore log is the type of sand soil, silt soil sandstone, and silt clay.
Year: 2018