The Fengfeng Mining District, which was chosen as the study area, is located in Handan City, Hebei Province, northern China, with a total area of approximately 353 km 2 (Liu and Huang, 2021).It includes the Wu, Yangquhe, and Xinsan sub-mines, and the abandoned Yi and Er mines (Fig. 1).The study area has a sub-humid monsoon climate …
Here we explore the effects of water resource exploitability on global groundwater depletion using the Global Change Assessment Model (GCAM)—an …
study, we reported the hydrochemical evolution of groundwater in the overburden aquifers (Jurassic Anding and Zhiluo aquifers) under the inuence of water drained from the underlying Yan'an aquifer, based on hydrochemistry and groundwater dynamics characteristics using self-organizing map (SOM) and time series analysis.
The mining disturbance of working face in deep coal mine leads to the fracture and movement of overlying strata and the damage of the aquifer in overlying strata, thereby causing water inrush ...
The interaction of mining and the surface water or aquifer system in varying overburden strata conditions is one of the most critical aspects of sustainable mining practices, that …
Carbonate aquifers hold substantial groundwater resources in many areas. In Europe, for example, water resources hosted in carbonate rocks satisfy ∼50% of …
blast damage at the bottom of the proposed quarry pit. Furthermore, depending on ... it may be necessary to extend wells below the bottom of the quarry pit. The mining operator and the operator's ... proposed new pit or pit expansion may affect this zone of influence. When proposing an aquifer pumping test, describe in detail the methodology ...
Hydrochemical evolution of groundwater can be related to and affected by mining activity, such as mine drainage. However, it is difficult to systematically and accurately identify and assess the hydrochemical evolution after mine drainage. In this study, we reported the hydrochemical evolution of groundwater in the overburden aquifers (Jurassic Anding …
The variation in radius of influence under confined and unconfined aquifer condition is assessed using a hypothetical case study with three operational quarry sites.
Companies applying for mining permits in the aquifer after August 1 st of last year will have to report how much water they're removing and submit a plan to recycle it.
Mining directly disturbs the hydrological characteristics of groundwater systems, including long-term groundwater level declines (Qiao et al. 2011; Shi et al. …
Limestone mining at Lanjiberna limestone and dolomite quarry has created positive as well negative impacts on ground water. With further deepening of the mine, drawdown trend (negative effect) is observed and at the same time ground water recharge of the order of 4,527.48 m3/day, through mine pits (positive impact) is noticed. The …
The heavy metal concentration was observed high in soil surrounding the mining area, and under the influence of intense precipitation heavy metals leach into groundwater. The fractures and fissions present in parent rocks also play a significant role in the permeability and contamination of groundwater in the downstream of mines ( …
They are critical in helping us protect Canada's aquifers and assess the sustainable use of groundwater through the activities described below. Characterizing aquifers. Assessing Canada's main aquifer systems through geological mapping, regional hydrogeological assessments and groundwater modelling; Gathering Earth observation …
0.6, and the height of damage evolution is about 120 m under the condition of full mining. The damage degree of the floor strata reaches 0.75, and the depth of damage evolution is about 40 m. Figure 4. Mining damage cloud chart Figure 5. Pore water pressure distribution. As the edge of goaf is open to the atmosphere, the pore water pressure ...
Slurry produced by limestone and marble quarrying can impact local karst aquifers, negatively affecting the groundwater quality and generating a remarkable environmental and economic damage. A very representative case-study is that of the Apuan Alps (north-western Tuscany, Italy) because of the intensive marble quarrying activity.
Safe mining under water pressure refers to coal mining over confined aquifers. Since the first water inrush from the Ordovician limestone aquifer occurred in the Kaiping coalfield in 1920 [], different models for mining under water pressure and predicting water inrushes have been proposed [].To date, the development history of mining under …
This paper examined this phenomenon in a complex strata condition via a case study, and proposed a new mining design to minimize the impact of longwall mining on the overlaying aquifer.
Using the experimental method of the numerical simulation,the influence of loose aquifer on overburden failure laws is studied.The results show that the overburden failure can be divided into tensile deformation zone,the tensile rupture and shear deformation zone and deformation zone.In the process of load transfer of loose aquifer,the load in the top of …
Coastal aquifers are highly sensitive to both regional and global phenomena that include sea-level rise, storm surges, change in climatic condition, shoreline erosion, coastal flooding, etc. (Barlow, 2003).Additionally, human activities are enhancing the salinization process in coastal regions (Rapti-Caputo, 2010).Apart from the coastal …
Overburden deformation and damage caused by coal seam mining is the main cause of water loss from aqui- fer. This paper aims at the problem of limited research on the water loss law of aquifer under the influence of mining the medium and deep coal seams in Yushen mining area. According to the geological and hydrogeological structure …
Mining can deplete surface and groundwater supplies. Groundwater withdrawals may damage or destroy streamside habitat many miles from the actual mine site. In Nevada, the driest state in the United States of America, the Humboldt River is being drained to benefit gold mining operations along the Carlin Trend.
In this study, the hydrogeochemical evolution mechanism of groundwater in a multi-aquifer system in the Fengfeng Mining Area was investigated using machine …
influence on mining operations and mine safety, and mitigating such problems ... potential loss of life, damage to capital equipment and mining continuity with ... underlying regional aquifers where uranium mining practices in-situ leaching with strongly acidic or alkaline solutions – for example in the
The escalation of mining activities in the karst regions of Guizhou Province has heightened the occurrence of water-inrush incidents in deep coal mines. This study focused on water-inrush phenomena within the Xinhua mining area of Jinsha County, Guizhou Province, aiming to investigate the sources of these incidents. The findings …
Statistical analysis was used to study the hydrogeochemical evolution of an Ordovician limestone aquifer group in the Hancheng mining area. Before mining, the groundwater flowed from northwest to southeast, the water type was primarily SO4–HCO3, and was mainly controlled by the tectonic structure and the specific hydrogeological …
Often used in electrical industry equipment and components, nuclear power and space industry. Enters the environment from mining operations, processing plants, and improper waste disposal. Found in low concentrations in rocks, coal, and petroleum and enters the ground and: Causes acute and chronic toxicity; can cause damage to lungs …
The hydrogeochemical characteristics of different aquifers in the mining area changed to different degrees after mining compared with the characteristics before mining. ... elucidate the hydrogeochemical evolution mechanism under the influence of long-term mining activities. This is a step forward in the knowledge of regional multi-aquifer ...