Kajian hidrologi dan hidrogeologi daerah penambangan, studi kasus lipatan sinklin di Sungai Mahakam, Kutai Kartanegara , Provinsi Kalimantan Timur

نویسندگان

چکیده

Changes in land use due to open pit mining operations, indirectly affect the hydrological cycle. Open especially method, greatly subsurface conditions, such as lithology and hydrogeology. The purpose of this study was analyze hydrogeological conditions before on syncline folds Mahakam river. This research is an inductive with analytical approach which includes use, geology, area dominated by plantations (84%) a rain catchment ​​995.9 hectares. results analysis yielded daily rainfall values ​​with 5-year recurrence 208.4 mm, annual 2.177.32 runoff 238.63 mm/yr, evapotranspiration 1,031.16 mm/yr groundwater recharge 907.53 mm/th. sandstone clayey siltstone. aquifer test (pumping test) showed that average K value (hydraulic conductivity) 1.33 × 10-2 m/s claystone 6.77 10-10 m/s. show top layer aquitard, below it aquifer, then bottom aquiclude. type classified semi confined

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ژورنال

عنوان ژورنال: Specta

سال: 2023

ISSN: ['2549-2713', '2622-9099']

DOI: https://doi.org/10.35718/specta.v6i3.685