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Geological Engineering Commons

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Full-Text Articles in Geological Engineering

Hawai'i Wildlife Fund V. County Of Maui, Lowell J. Chandler Apr 2018

Hawai'i Wildlife Fund V. County Of Maui, Lowell J. Chandler

Public Land & Resources Law Review

In Hawai’i Wildlife Fund v. County of Maui, the Ninth Circuit held that the plain language of the Clean Water Act provides jurisdiction over indirect discharges of pollutants from a point source into groundwater that is shown to be connected to navigable waters. The court found that studies confirmed pollutants entering the Pacific Ocean were fairly traceable to the County of Maui’s sewage disposal wells. In affirming the district court’s ruling, the Ninth Circuit held that Maui County violated the Clean Water Act by discharging pollutants into a navigable water without the required permit. The court also ...


Hierarchical Multiscale Modeling To Inform Continuum Constitutive Models Of Soils, Erik Wallace Jensen Jan 2017

Hierarchical Multiscale Modeling To Inform Continuum Constitutive Models Of Soils, Erik Wallace Jensen

Civil Engineering Graduate Theses & Dissertations

The behavior of soils is fundamentally the combined interactions between billions and billions of individual particles and particle matrices. For computational tractability and despite this fact, many soil models assume the material is a continuum essentially averaging the inter-particle interactions to predict the behavior of the bulk material. In recent years, multiscale modeling techniques have been developed to reintroduce the effect of the grain-scale interactions to help model situations where the continuum assumption fails, such as shear band development in triaxial tests or soil disaggregation under blast loading. One of such multiscale models called hierarchical upscaling, or global-local analysis, model ...


Thermal Modeling Of A Mechanical Integrity Test On An Underground Storage Cavern, Brandon Charles Lampe Jan 2011

Thermal Modeling Of A Mechanical Integrity Test On An Underground Storage Cavern, Brandon Charles Lampe

Civil Engineering Graduate Theses & Dissertations

The objective of this research was to describe how the transient heat transfer phenomena influences the results of mechanical integrity tests (MITs) performed on the well of an underground storage cavern in rock salt. Underground caverns have been developed in salt deposits throughout the world for the purpose of producing brine and storing compressed air, hydrocarbons, and waste products; and are a critical underground infrastructure. Despite the very low permeability of rock salt, limited volumes of stored product may diffuse out of the cavern. Additionally, underground storage caverns change in size because of salt creep, leading to difficulties in estimating ...