Geochemistry, Hydraulic Connectivity and Quality Appraisal of Multilayered Groundwater in the Hongdunzi Coal Mine, Northwest China

Geochemical and Isotopic Assessment of Regional Groundwater Flow and Aquifer Connectivity in the Lisbon Valley, Utah

“…Major ion chemistry, trace metals, solute isotopes, and age tracers can be indicative of whether mixing is occurring between two aquifers, because if mixing were occurring, one would expect the values of these geochemical parameters of each water to be similar and/or follow a mixing trend (Campbell et al, 2008;Johnson et al, 2015;Priestly et al, 2017;Li et al, 2018). The unique geochemical and isotopic signatures of each aquifer at LVMC, and lack of mixing trends between aquifer endmember compositions, suggests that limited cross-formational flow is occurring between the BCA and the NA.…”

“…Aquifer connectivity and the potential for cross-formational flow is an issue pertinent to many fields including oil and gas production (e.g., Campbell et al, 2008), mining (e.g., Li et al, 2018), and water resources development and protection (e.g., Johnson et., al 2015;Priestly et al, 2017). For example, understanding regional groundwater flow and assessing aquifer connectivity can aid in the determination of where harmful byproducts of any of the aforementioned activities may end up and how to better protect freshwater resources based on this knowledge.…”

“…hydrogeologists take a subsurface-based approach, relying on data collected from arrays of boreholes, but often not directly observing fault characteristics (Bense et al, 2013). By using a suite of geochemical tracers combined with physical hydrogeological conceptions, it may be possible to delineate if cross-formational mixing is occurring and to what extent (Campbell et al, 2008;Johnson et al, 2015;Priestly et al, 2017;Li et al, 2018).…”

A New Perspective to Explore the Hydraulic Connectivity of Karst Aquifer System in Jinan Spring Catchment, China

“…Kattan [10] recently investigated the aquifer interaction and the origin of groundwater salinization using hydrochemical and environmental isotope methods based on the karst groundwater quality of wells in Syria. The author described the hydraulic connectivity in the Hongdunzi coal mining region in Northwest China by employing hydrochemical and environmental isotope methods [11]. The appeal of numerical simulation for exploring the hydraulic connectivity of karst aquifer systems is that it combines water flow models with computer science, thereby facilitating visualization of simulation results [12][13][14][15].…”

Mine Water Problems and Solutions in China

“…Mining can certainly affect the geochemical characteristics and the geochemical evolution of groundwater, though in many mining areas, natural processes dominate the geochemical evolution of groundwater . Li et al (2018b) investigated the hydraulic connectivity of different aquifers affected by coal mining using hydrochemical approaches, as well as the hydrogeochemical evolution and water quality of the groundwater. Similarly, Xu et al (2018b) compared groundwater quality before and after coal mining.…”