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Showing 1 to 16 of 16 for “"Hydromechanical"”.
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Hydromechanical characteristics of a single rock joint
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Hydromechanical Stress and Internal Erosion under Earthen Structures
… understanding of internal erosion and the hydromechanical stress conditions necessary for the initiation and continuation of internal erosion in cohesionless soils under earthen structures. This research project consisted of three experimental tasks to evaluate internal erosion in …
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Simulating Earthquake-triggered Runout using Higher-order Hydromechanical MPM and PM4Sand
… PM4Sand constitutive model is implemented in the hydromechanical MPM to enable the model to capture the cyclic behavior of sand, including liquefaction triggering and cyclic mobility. Verification and validation of the framework are performed by comparing the results with those obtained using the …
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Hydromechanical Evaluation of Flow Behavior in Rock Foundations of Concrete Gravity Dams
… of reservoir water loads into the abutments, the hydromechanical interaction along foundation joints and enhanced natural drainage. (2) For the dams analyzed in this study, estimated changes in rock joint permeability within dam foundations during reservoir filling are in the range of one to two …
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A Study of the Coupled Hydromechanical Behavior of Jointed Rock Masses Around Pressure Tunnels
In fractured rock masses with continuous joints which daylight middle to steeply inclined valley walls $(\beta>20\sp\circ),$ failure by hydrojacking was preceded by sliding of a wedge toward the valley side and opening of steep joints. This observation was used to formulate a criterion for failure …
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Seepage induced instability in widely graded soils
… is governed by a combination of geometric and hydromechanical constraints. Much concern exists for embankment dams and levees built using soils with a potential for internal instability. Migration of finer particles to a boundary where they can exit, by washing out, may cause erosion or piping …
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Jamming transition and emergence of fracturing in wet granular media
… the emergence of fracture patterns. We develop a hydromechanical computational model, coupling a "moving capacitor" dynamic network model of two-phase flow at the pore scale with a discrete element model of grain mechanics. We simulate the slow injection of a less viscous fluid into a frictional …
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Pattern formation in fluid injection into dense granular media
… times associated with fluid injection, hydromechanical coupling and viscoelastoplasticity. The injection process is also analyzed numerically using the discrete element method (DEM) coupled with two fluid flow scheme, a fixed coarse grid scheme based on computational fluid dynamics (CFD) …
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Numerical evaluation and analysis of the occurrence of earth fissures in faulted sedimentary basins
… analysis a) investigates the geometrical and hydromechanical features of the zone of influence surrounding the Eglington Fault; b) identifies the zones of accumulated stress on the surface and at depth that can lead to fissuring; and c) simulates the onset and propagation of tensile-induced …
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The influence of the Critical Zone on hillslope hydrology and stability
… value of combining geophysical constraints with hydromechanical modeling for a more realistic characterization of CZ behavior was demonstrated by the notable improvement in reproducing hydrological responses and slope failure processes derived from the improved characterization of CZ …
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Biological control of Culex mosquitoes using multiple predators
… This suggests that copepods are reliant on hydromechanical rather than visual cues in detecting mosquito prey. However, the presence of alternative prey resulted in species-specific shifts in FR magnitude and form in cyclopoid copepods. Whilst Culex mosquitoes avoided copepods when selecting …
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Coupled Hydro-Mechanical Modelling of Gas Migration in Saturated Bentonite
… gas migration process is accompanied by complex hydromechanical (HM) behaviors, such as gas breakthrough phenomenon, development of preferential pathways, build-up of water pressure and total stress, nearly saturated state after gas injection test, localized consolidation, water exchange between …
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Geomechanics of injection-induced seismicity in Illinois basin
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-08-01
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A THREE-DIMENSIONAL FULLY COUPLED HYDRO-MECHANICAL ELASTO-PLASTIC MODEL FOR UNSATURATED SOILS WITH CONSIDERATION OF HYSTERESIS BEHAVIOR
<p>"Unsaturated soils are often used as a construction material in transportation infrastructures; in which it is subjected to cyclic traffic loadings and/or seasonal wetting-drying cycles. While mechanical hysteresis is a common feature of soils in general, hydraulic hysteresis is associated with …