Hydrogeochemical investigation of groundwater characteristics in Alpu coal field, Eskisehir-Turkey

Tural, Ceren Yazıgülü
Hydrogeochemical characteristics and quality of groundwater resources in Alpu Coal field to the north of Porsuk Creek are investigated. EC, pH, DO and ORP average value ranges are determined as 438-1227 μS/cm, 7.43-8.69, 3.29-6.05 mg/l and 106-180 mv, respectively in spring waters and as 452-30233 μS/cm, 7.46-8.48, 0.6-6.0 mg/l ve 198- -183 mv, respectively in well waters. All spring waters are in HCO3 - Mg, Mix(Ca-Mg), Ca facies. Groundwater facies, stratigraphically downward: change in the order of HCO3, SO4 and Cl according to the anion content and in the order of Mg, Mix and Na according to the cation content. Ammonia concentrations in deep groundwaters filtered about greater than 300 m depths are much higher than the expected values. In general, chloride values of groundwater decrease from surface to approximately 100 m depth but afterwards increase stratigraphically from 100 m depth to basement rocks (Pliocene to Miocene to Basement aquifers). The chemical characteristics of Pliocene, MAC and MBC + Mélange deep groundwaters are related to the hydrogeochemical evolution processes of deep sedimentary basin groundwaters under water-rock reaction relationships accompanied by very low permeability related ion filtration and diffusive/dispersive transport enrichment. In terms of classification limits, groundwater is in low quality.


SOYUPAK, S; Gökçay, Celal Ferdi; YERLI, S; ERDEN, S; AKBAY, N; CILESIZ, AF (1994-03-01)
Water quality properties and trophic status of Keban Dam Reservoir have been assessed in detail. The dissolved oxygen contours exhibited somewhat unusual behaviour of temporarily established intermediate layers of low dissolved oxygen concentrations. The phytoplankton species were identified and their composition was evaluated. The reservoir is eutrophic in general terms. However, lotic and limnetic zones of the reservoir have shown different trophic status.
Hydrogeological investigation and characterization of Alpu sector-A coal field in Eskisehir-Turkey
Düz, Tevfik Kaan; Yazıcıgil, Hasan; Department of Geological Engineering (2018)
The purpose of the study is to investigate and characterize the hydrogeological conditions at the Alpu Sector-A Coal Field which is located in the Eskisehir Province in Turkey. This is required to provide baseline hydrogeological information before environmental impact assessment of the planned mining operations can be done. The characterization studies included hydrogeological and hydrochemical analysis of groundwater and surface water. The spatial and temporal variations in groundwater levels are determin...
Heavy Metal-Mineral Associations in Coeur d'Alene River Sediments: A Synchrotron-Based Analysis
Moberly, James G.; Borch, Thomas; Sani, Rajesh K.; Spycher, Nicolas F.; Şengör, Sema Sevinç; Ginn, Timothy R.; Peyton, Brent M. (2009-07-01)
Nearly a century of mining activities upstream have contaminated Lake Coeur d'Alene and its tributaries with Pb, Zn, and other heavy metals. Heavy metal concentrations in sediments of the Coeur d'Alene watershed have been shown to be inversely proportional to the sediment size fraction; thus, analysis on a very small scale is essential to determine the mobility and stability of heavy metals in this environment. Micron-scale synchrotron-based methods were used to determine the association of heavy metals wit...
Optimal management of a coastal aquifer in southern Turkey
HALLAJI, Khosrow; Yazıcıgil, Hasan (1996-01-01)
Seven ground-water management models were developed to determine the optimal planning and operating policies of a costal aquifer in southern Turkey threatened by saltwater intrusion. Steady-state and transient finite-element simulation models, representing the response of the system, are linked to linear and quadratic optimization models using response functions. Optimal pumpage policies were determined for 94 wells under three management objectives that maximized agricultural water withdrawals and minimize...
Assessment of Dewatering Requirements and Dewatering Well Design for an Open Pit Coal Mine in Central Anatolia
Peksezer Sayıt, Ayşe; Yazıcıgil, Hasan (2022-09-01)
The celtikci Coal Basin is a newly discovered coal basin in Central Anatolia where 11 years of open-cut mining has been planned. The bulk of the mining will be conducted below the regional water table; hence, determination of the dewatering requirements and proper design of the dewatering wells plays a critical role. This study (i) defined the dewatering requirements of the open-pit mine, (ii) established a dewatering well design for the area, and (iii) assessed the anticipated impacts of the dewatering act...
Citation Formats
C. Y. Tural, “Hydrogeochemical investigation of groundwater characteristics in Alpu coal field, Eskisehir-Turkey,” M.S. - Master of Science, Middle East Technical University, 2021.