GROUNDWATER HYDROGEOLOGY: STUDY CASE ON MANGANESE ORE EX-MINING OPENING HOLE AT KLIRIPAN, KULONPROGO REGENCY

HIDROGEOLOGI AIR TANAH: STUDI KASUS PADA LUBANG BUKAAN BEKAS PENAMBANGAN BIJIH MANGAN DI DUSUN KLIRIPAN KABUPATEN KULONPROGO

Abstract

The study was conducted in the opening hole of the former manganese ore mining of Vertical Shaft (PTPM) and Inclined Shaft (Sunoto) located in Dusun Kliripan, Desa Hargorejo, Kecamatan Kokap, Kabupaten Kulonprogo, Provinsi Daerah Istimewa Yogyakarta. The two planned openings will be the object of geological tourism and underground mining practice of mining engineering students. This research wants to study the hydrogeological conditions in the Dusun Kliripan. The methods used in this research are literature study, field orientation, primary data collection including measurement of groundwater level and infiltration rate, as well as the topography of the study area, secondary data include rainfall data, topographic maps, geological maps, and hydrogeological maps. The next stage includes data processing, as well as the study of data processing results. The results obtained were lithology conditions including Frozen Rock, Volcanic Breccia, and Limestone, the average infiltration rate obtained was 0.16 cm/min, and the groundwater level in the Kliripan at an elevation of 70 masl to 92 masl, with basin groundwater included in the Menoreh Groundwater Basin area. The Kliripan area has a sufficiently good groundwater reserve with complete hydrogeological elements so that it can be used for continued use of groundwater in the region.