Fresh water is one of the most precious and finite resources in the world. Groundwater comprises a significant portion of that resource and it is often subject to mismanagement or pollution. Managing the groundwater resource means balancing demands that are often in tension, such as the need for fresh drinking water with the needs of agriculture, industry, power production, and the environment. Developing a good understanding of the surface water and groundwater interaction in natural and human-influenced systems is therefore critical.
GeoStudio offers a suite of products designed to address groundwater issues. The hydrogeological behaviour of a system can be analyzed under steady-state or transient conditions. Groundwater velocities can be used to model solute transport with first-order kinematic reactions such as decay or adsorption. Air transfer analyses can be included to study gas transport in the free and dissolved phases. Land-climate interaction modelling can be conducted to develop closure plans for mine sites.
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The objective of this illustration is show how to model the filling or draining of a pond where the water is seeping into the pond from the soil or from the pond back into the soil, respectively. The head in the pond is not known, and depends on the volume of water seeping out of or into the soil. A special head boundary function can be used in this case.
Stability analysis during rapid drawdown is an important consideration in the design of embankment dams. Using SLOPE/W, stability during rapid drawdown can be analyzed in two approaches; namely the “effective strength” approach and the “staged undrained strength” approach. The purpose of this example is to show how to conduct a rapid drawdown analysis using the effective stress approach.
This example looks at a case of flow through an embankment dam. This case appears in most text books on seepage and consequently most SEEP/W users will have a good idea as to what the solution should look like. The example illustrates how easy it is to find the downstream seepage face when the dam is all one material.
This example demonstrates how to use SEEP/W computed pore-pressures in a SLOPE/W stability analysis. The problem creates a perched watertable under long term net infiltration of precipitation. This perched condition can only be properly handled by directly using the SEEP/W results in SLOPE/W.
SEEP/W analyzes groundwater flow within porous materials such as soil and rock. Its formulation enables analyses ranging from simple saturated steady-state problems to sophisticated saturated/unsaturated time-dependent problems.
SIGMA/W performs stress and deformation analyses of geotechnical, civil and mining works. It can perform a simple linear elastic deformation analysis or a highly sophisticated soil-structure interaction analysis with non-linear material models and coupling to seepage analysis.
TEMP/W enables analysis of thermal changes in the ground due to environmental factors or the construction of facilities such as buildings or pipelines. TEMP/W can be applied to the geothermal analysis and design of geotechnical, civil, and mining engineering projects.
VADOSE/W analyzes interactions at the ground surface to determine environmental impacts on the movement of water through the unsaturated vadose zone and into the local groundwater regime. Potential interactions considered in VADOSE/W include infiltration due to rainfall and snowmelt, root transpiration, gas diffusion, and surface runoff, evaporation and ponding.