Results 211 to 220 of about 907,541 (362)

Cadmium in soils and groundwater: A review.

open access: yesApplied Geochemistry, 2019
A. Kubier, R. Wilkin, T. Pichler
semanticscholar   +1 more source

A novel construction approach for the pore structure model principally focuses on the controllable roundness of rock particles

open access: yesDeep Underground Science and Engineering, EarlyView.
Particle rounding effects comparison of different methods: (a), (b), and (c) are the rounding results using the B‐spline curve method with different R; (d), (e), and (f) are the results of vertex rounding substitution method with different rounding radii.
Jiabin Dong   +6 more
wiley   +1 more source

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang   +6 more
wiley   +1 more source

Field investigation of grout propagation within a caving mass under flowing water conditions in a metal mine

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigated the characteristics of two‐liquid slurry propagation filling of underground concealed spaces under flowing water conditions in metal mines using on‐site engineering tests. We proposed four different grout stratigraphic classifications, investigated four main factors affecting grout propagation, and summarized five different ...
Baofu Wu   +5 more
wiley   +1 more source

Damage modeling of CO2 injection well interfaces under coupled thermal, hydraulic and mechanical behavior

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper presents an investigation of CO2 injection well damage evolution considering different injection temperatures and the presence of a pre‐existing defect. The main outcome is that the accurate prediction of well leakage risk requires characteristics such as initial defects to be understood and represented in any modeling efforts. Abstract This
Lee J. Hosking, Xiangming Zhou
wiley   +1 more source

Data‐driven analysis of the spatial dependence of grouting efficiency during tunnel excavation

open access: yesDeep Underground Science and Engineering, EarlyView.
Prediction of grouting efficiency using machine learning is enhanced by adopting a training strategy that accounts for the grouting process across multiple rounds. Abstract Grouting with water–cement mixtures is the most widely used and cost‐effective method for managing excess water inflow during tunnel construction.
Huaxin Liu, Xunchang Fei, Wei Wu
wiley   +1 more source

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