29 Result(s)
within
Earth Sciences
**huan Wei
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Article
Numerical Simulation of Water Flow from the Coal Seam Floor in a Deep Longwall Mine in China
The study of groundwater flow from the coal seam floor is critical to safe mining operations in China. We developed a numerical simulation model to describe flood water pathways during mining, using the field ...
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Article
In situ dynamic monitoring of stress revolution with time and space under coal seam floor during longwall mining
In situ dynamic monitoring was used to obtain spatial and temporal strain and stress data in the floor strata during longwall mining at the no. 1604 working face in Nantun Coal Mine, China. The results reveal ...
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Article
A Multi-method Approach for Estimating the Failure Depth of Coal Seam Floor in a Longwall Coal Mine in China
Determining the failure depth of coal seam floor is necessary for safe mining operations, especially when the coal seam is located above confined aquifers with high water pressure. Geomechanical, geophysical, ...
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Article
Effect of mariculture on sediment grain size and its potential environmental significance in Sishili Bay, Yellow Sea, China
The grain-size distribution of sediment is associated with series of environment problems in mariculture area; however, there is still disparity in the effect of marine culture on grain size partly because it ...
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Article
Numerical simulations of full-wave fields and analysis of channel wave characteristics in 3-D coal mine roadway models
Currently, numerical simulations of seismic channel waves for the advance detection of geological structures in coal mine roadways focus mainly on modeling twodimensional wave fields and therefore cannot accur...
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Article
Formation and Height of the Interconnected Fractures Zone after Extraction of Thick Coal Seams with Weak Overburden in Western China
Formation of a zone of interconnected fractures during coal mining is a key factor in mine flooding. Coal mines in western China are characterized by thick coal seams with mechanically weak overburden. In situ...
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Article
Grouting rock fractures with cement and sodium silicate grout
Quick-setting grout has been widely used in sealing underground excavations to prevent water ingress. Cement and sodium silicate grout (C–S grout), a typical quick-setting slurry, is becoming increasingly more po...
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Article
Influence of sedimentary facies on reservoir quality and distribution of diagenetic features in the Funing Formation, Wanglongzhuang Oilfield, Subei Basin, Eastern China
The Paleogene clastic sediments of the Funing Formation, which is characterized by slump-fan, delta-front, and beach-bar deposits, are important targets for oil and gas exploration in the Wanglongzhuang Oilfie...
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Article
Impact of recharge water temperature on bioclogging during managed aquifer recharge: a laboratory study
To investigate the effect of recharge water temperature on bioclogging processes and mechanisms during seasonal managed aquifer recharge (MAR), two groups of laboratory percolation experiments were conducted: ...
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Article
Prediction analysis model for groundwater potential based on set pair analysis of a confined aquifer overlying a mining area
One important prerequisite for mine water inrush prevention and water inflow control in a coal mine is groundwater potential map**. In this study, a synthetical method was developed to evaluate the groundwat...
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Article
An attribute recognition model to predict the groundwater potential of sandstone aquifers in coal mines
The groundwater potential prediction of sandstone aquifers is an important pre-requisite for the implementation of reasonable and effective measures to prevent mine water inrush disasters. In this study, an at...
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Article
Preliminary study on wave field and dispersion characteristics of channel waves in VTI coal seam media
Coal seam is a sedimentary rock with bedding, which can be regarded as VTI medium. VTI medium model is more suitable for real coal seam. However, existing channel wave theories generally assume that coal seams...
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Article
Groundwater Selenium Level and its Enrichment Dynamics in Seawater Intrusion Area along the Northern Coastal Zones of Shandong Province, China
The variation of groundwater properties caused by seawater intrusion, such as OH–, TDS, \({\text{SO}}_{4}^{{2 - }},\) ...
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Article
The influence of high-fluorine groundwater on surface soil fluorine levels and their FTIR characteristics
In order to detect the influence of fluorine-enriched water on surface soil (< 20 cm) fluoride levels, the groundwater and surface soil samples in Buzhuang Town, a typical drinking water fluorosis area, were s...
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Article
An improved model to predict the water-inrush risk from an Ordovician limestone aquifer under coal seams: a case study of the Longgu coal mine in China
The mining of stratigraphically low coal seams in North China-type coalfields is subject to water inrush from the underlying Ordovician limestone aquifer. The water-inrush coefficient method that is currently ...
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Article
Drainage feasibility of a Carboniferous thin-layer limestone aquifer based on a dewatering test: Luxi coal mine, China
Mine water damage is one of the main disasters threatening mine safety during production. The key to mine water hazard prevention and control is determining the main aquifer characteristics that threaten the m...
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Article
Discrimination of mine water-inflow sources based on the multivariate mixed model and fuzzy comprehensive evaluation
The accurate discrimination of the mine water-inflow sources is one of the main focuses of mine hydrogeological work and represents the basis of coal mine water hazard prevention. To accurately discriminate th...
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Article
Analysis and control of water inrush under high-pressure and complex karstic water-filling conditions
Karstic water damage is one of the main disasters that threatens safe production in coal mines. As coal mining in China moves toward deeper strata, deep karst water disasters caused by mining are increasingly ...
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Article
Evaluation of changes in groundwater quality caused by a water inrush event in Taoyuan coal mine, China
The effects of a water inrush event on the chemical composition of groundwater in a coal measures sandstone aquifer that is important for water supply was investigated at the Taoyuan coal mine in the Huaibei r...
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Article
Water permeability evaluation of fault zone in underground coal mines
A large number of mine water inrush data show that a fault zone is often a good water inrush channel. The fault zone internal architecture is very complex. The fault zone exhibits commonly heterogeneous and an...
