Open Access. Powered by Scholars. Published by Universities.®

Geological Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 2 of 2

Full-Text Articles in Geological Engineering

Centrifuge Modeling Of Dense Granular Columns In Layered Liquefiable Soils With Varying Stratigraphy And Overlying Structures, Mahir A. Badanagki Jan 2019

Centrifuge Modeling Of Dense Granular Columns In Layered Liquefiable Soils With Varying Stratigraphy And Overlying Structures, Mahir A. Badanagki

Civil Engineering Graduate Theses & Dissertations

Soil liquefaction and ground failure have been a major source of damage to slopes, embankments, and structures during previous earthquakes. The risk of liquefaction and associated ground deformations can be reduced by various forms of improvement, including the granular column technique. Granular columns are known to be cost effective and environmentally friendly, and they have been in use since the 1970’s to mitigate the liquefaction hazard. Granular columns mitigate the consequences of soil liquefaction through a combination of: 1) installation-induced ground densification, 2) increase in lateral effective stresses in the surrounding soil, 3) increase in shear stiffness, and 4 ...


Investigating Hydraulic Communication Between Wells During Hydraulic Fracturing Treatments In The Piceance Basin, Colorado, Usa, Alexis Ahlert Jan 2019

Investigating Hydraulic Communication Between Wells During Hydraulic Fracturing Treatments In The Piceance Basin, Colorado, Usa, Alexis Ahlert

Undergraduate Honors Theses

Oil and gas wells in Colorado had a circular spacing regulation that required wells to be spaced 745 ft (227 m) in diameter apart. Some oil and gas wells in the Piceance Basin experience hydraulic communication, which is when the hydraulic fracturing of one well damages the production of a neighboring well. During hydraulic communication, formation water enters the producing borehole at the front of the pressure wave and must be removed before the well is brought back into production. Several wells that have experienced communication have come back on line, but months later, have not recovered their original production ...