Assessment of impact of coal mining on ground and surface waters in Tozaklı coal field, Kırklareli, northeast of Thrace, Turkey

Arkoç, Orhan; Ucar, S.; ÖZCAN, Cemile

doi:10.1007/s12665-015-5120-1

Cited by 40 publications

(14 citation statements)

References 40 publications

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“…Coal mining will lead to overburden fracturing [1,2], groundwater pollution [3][4][5][6], and landslides [7]. Moreover, all of the environmental damage relates to the surface subsidence.…”

Section: Introductionmentioning

confidence: 99%

Subsidence Prediction of Overburden Strata and Surface Based on the Voussoir Beam Structure Theory

2018

Advances in Civil Engineering

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The hard and stiff strata (key strata) bear the overburden load in the form of a voussoir beam structure (VBS) after break. The VBS affects both the surface subsidence and the stope underground pressure. Therefore, the reasonable method to predict the surface subsidence is based on the whole subsidence formulae of the VBS. This study first establishes the subsidence formulae of the VBS analytically. The influence of the block length on the subsidence curve and the VBS level on the zero-subsidence range are then analyzed based on the subsidence formulae of the VBS. The results show the half-subsidence curve of the VBS is an S-shaped curve. The block length hardly affects the S-shaped subsidence curve determined by the width of the undercompacted zone. Furthermore, a greater undercompacted zone width corresponds to a greater offset distance of the inflection point. The higher the VBS level, the farther the zero-subsidence range, and the flatter the subsidence curve. The subsidence of the highest VBS can approximately represent the surface subsidence when the topsoil is thin enough.

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“…Coal mining will lead to overburden fracturing [1,2], groundwater pollution [3][4][5][6], and landslides [7]. Moreover, all of the environmental damage relates to the surface subsidence.…”

Section: Introductionmentioning

confidence: 99%

Subsidence Prediction of Overburden Strata and Surface Based on the Voussoir Beam Structure Theory

2018

Advances in Civil Engineering

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“…Ovacik-Yapraklı abandoned coal site was reported to be contaminated with heavy metals, and higher heavy metal concentrations were observed in downstream of the surface water (Yenilmez et al 2011 ). Arkoc et al ( 2016 ) reported that there was no contamination of heavy metals in groundwaters around the mining field in Kırklareli, apart from a moderate level of contamination of As and Ni. However, they found out that there is contamination from human animal wastes in the groundwaters in the area.…”

Section: Environmental Effects Of Coal-fired Power Plantsmentioning

confidence: 99%

Impacts of coal-fired power plants for energy generation on environment and future implications of energy policy for Turkey

Vardar

Demirel

Onay

2022

Environ Sci Pollut Res

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Turkish government aimed to increase the installed capacities of coal-fired power plants (CFPPs) according to several policies and strategic plans published in recent years. Energy production from CFPPs and subsidizing the coal sector were selected for reducing the import dependency as a cheaper option. CFPPs with gaseous emissions as well as fly ash and fine dust, along with ash storage, coal storage, and coal mining operations and water use for cooling of the plants, affect the environmental quality. Hence, the health of inhabitants of the environment is affected. CFPPs to be built, according to strategic plans, will emit a significant amount of greenhouse gases (GHGs) and would severely undermine the targets for a 1.5 ℃ or 2 ℃ warmer world. Subsidies to the coal sector, along with exemptions from environmental regulations, combined with slower growth of energy production from renewable energy sources (RES), may lead to a path dependence on coal, while the rest of the world increases their energy production from RES. This study demonstrates the concrete examples of pollution caused by CFPPs in Turkey, along with health effects with the addition of policy context toward utilization of CFPPs, to point out the risks these plants constitute both for the environment and economy. Increasing the share of RES in the energy mixture is particularly important for Turkey due to being in a geographical region that is highly vulnerable to climate change effects. This study also briefly discusses how the increase of RES and de-carbonization in Turkey could be conducted in the short- and long-term, upon the literature provided.

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“…Coal mining will lead to roof caving, overburden fracturing, surface subsidence and environmental damage, resulting in groundwater pollution, surface water flow cutoff, vegetation withering and farmland waterlogging [1][2][3][4][5][6][7][8][9][10]. Therefore, it is especially important to study the surface subsidence caused by coal mining.…”

Section: Introductionmentioning

confidence: 99%

Height of overburden fracture based on key strata theory in longwall face

Zhang

2020

PLoS ONE

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Among the three overburden zones (the caving zone, the fracture zone, and the continuous deformation zone) in longwall coal mining, the continuous deformation zone is often considered to be continuous without cracks, so continuum mechanics can be used to calculate the subsidence of overburden strata. Longwall coal mining, however, will induce the generation of wide cracks in the surface and thus may cause the continuous deformation zone to fracture. In this paper, whether there are cracks in the continuous deformation zone as well as the height of overburden fracture in longwall face and the subsidence and deformation of strata of different fracture penetration ratios were studied by means of physical simulation, theoretical analysis and numerical simulation. The results show that: (1) Rock stratum starts to fracture as long as it has slightly subsided for only tens of millimeters, and the height of fracture development is the height of working face overburden. (2) With the increase of fracture penetration ratio, the subsidence of key strata remains basically unchanged; the surface deformation range and the maximum compression deformation decrease, while the maximum horizontal movement and maximum horizontal tensile deformation increase. Therefore, the subsidence of overburden strata which have fractured but have not broken can be calculated through the continuum mechanics method.

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Assessment of impact of coal mining on ground and surface waters in Tozaklı coal field, Kırklareli, northeast of Thrace, Turkey

Cited by 40 publications

References 40 publications

Subsidence Prediction of Overburden Strata and Surface Based on the Voussoir Beam Structure Theory

Subsidence Prediction of Overburden Strata and Surface Based on the Voussoir Beam Structure Theory

Impacts of coal-fired power plants for energy generation on environment and future implications of energy policy for Turkey

Height of overburden fracture based on key strata theory in longwall face

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