Hydrogeology and Groundwater Modeling in the Mining Area of Pt. X in Berambai Area, Kutai Kartanegara Regency, East Kalimantan Province

DOI

10.2991/978-94-6463-180-7_21How to use a DOI?

Keywords

Berambai; Groundwater; Hydrogeology; Model

Abstract

The world of mining, especially coal mining, is an activity that can cause changes in geological, hydrological, morphological and land use conditions. Changes in these conditions also have an impact or influence on the mining and post-mining processes. The location of the research was carried out in the mining business area of PT. X which is located in the Berambai area, Kutai Kartanegara Regency with a research area of 2,6 km². This study aimed to determine the hydrogeological conditions and model the direction of groundwater flow in the research area. This study uses primary data like direct geological mapping and rainfall in the mining area, while secondary data in the form of regional geology, coring data, groundwater level observation data, climate data and literature studies. The method used in modeling the direction of groundwater flow is the finite difference grid method. The research area is part of the Separi Besar watershed so the research area is determined as a rain catchment area. The groundwater recharge value obtained is 930,4074 mm mm/year. The research area belongs to the Typology of Sandstone-Claystone Sedimentary Aquifer System, the types of aquifers found are unconfined aquifers and confined aquifers. The hydrostratigraphy of the research area consists of aquifer, aquitard and aquiclude layers. The hydrogeological boundaries of the research area are river boundaries, groundwater divide and impermeable boundaries. From the results of the model that has been calibrated and analyzed for sensitivity, that is, groundwater flow in the unconfined aquifer layer is not found in the Eastern part of the study area, while groundwater flow in the confined aquifer layer is still visible, this is because the unconfined aquifer layer is not continuous. The direction of groundwater flow is towards the lower area, namely the constant network (river) and the mining pit area.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Gabriel Denny Lambe
AU  - Muhammad Amin Syam
AU  - Hamzah Umar
PY  - 2023
DA  - 2023/07/27
TI  - Hydrogeology and Groundwater Modeling in the Mining Area of Pt. X in Berambai Area, Kutai Kartanegara Regency, East Kalimantan Province
BT  - Proceedings of the International Conference of Tropical Studies and its Applications (ICTROPS 2022)
PB  - Atlantis Press
SP  - 184
EP  - 197
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-180-7_21
DO  - 10.2991/978-94-6463-180-7_21
ID  - Lambe2023
ER  -