PROTOTYPE BIOPORI DRILLING MACHINE UNTUK MEMBUAT LUBANG BIOPORI

Glintung Village (village of biopori) is precisely in the village of Purwantoro RW 23, Blimbing sub-district, Malang, which became a flood customer when the rainy season arrived. villages that used to be slum and often flooded became beautiful and free from flooding, by reforesting every house and making biopori holes to reduce flooding. Due to the large number of floods in the city during the rainy season this biopori drilling machine is very useful for reducing flooding. This biopori drilling machine can drill the ground to a depth of 100cm. where in the hole can hold enough rainwater. The purpose of making a drilling machine is to make it easier for people to drill the land. The method of making this prototype includes the concept design of a manual biopore drill that is combined with a deasel machine with a power capacity of 1.46 kw / 6500r / min. and has been tested on grumusol (sand and small gravel) soil whose strength is 19.7 kN / m² (BS 8004: 1986 Soil Mechanics) round drill bit 250 Rpm. With a 100 mm diameter shaft, drill bits are made of nickel chromium steel (JIS G 4102) SNC22 and ST 42 steel