Instrumentation systems for and failure mechanisms of an induced slope failure project
Instrumentation systems for and failure mechanisms of an induced slope failure project
The Selborne Slope Study brought to failure, by the process of pore pressure recharge, a nine metre high slope cut in overconsolidated Gault Clay at Selborne, Hampshire. The slope was subject to a high degree of instrumentation. Following slope collapse two trenches perpendicular to the failure were excavated to locate and identify the slip surface. The slip surface was traced and surveyed in each trench. Large diameter (300mm) and block samples were taken through the slip surface for laboratory analysis.
The author, as Research Assistant for the project, was responsible for overseeing slope formation and instrumentation installation; instrumentation monitoring and management; slope monitoring; establishing initial conditions; pore pressure recharge system construction and control; slope monitoring through failure; post-collapse investigations; site decommissioning and instrument data processing.
This Thesis presents a detailed case history tracing the geometry, nature and development of the failure. Information detailing the background to the project, site geology, pore pressure recharge system and instrumentation systems is presented. The performance of the instrumentation and its ability to describe the failure is discussed. The processes and mechanisms considered to have been operating as the slope progressed from a stable to an unstable state and eventually to collapse are described and discussed.
Notable findings of the study are the demonstration of dilation occurring at the developing slip surface during failure and the identification of a progressive failure mechanism with a bottom-top-middle order of slope movement. Processed instrumentation results and survey data are presented
University of Southampton
Grant, David Ian
739788e3-6a5e-4725-8121-dc54d53c13fb
1996
Grant, David Ian
739788e3-6a5e-4725-8121-dc54d53c13fb
Grant, David Ian
(1996)
Instrumentation systems for and failure mechanisms of an induced slope failure project.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
The Selborne Slope Study brought to failure, by the process of pore pressure recharge, a nine metre high slope cut in overconsolidated Gault Clay at Selborne, Hampshire. The slope was subject to a high degree of instrumentation. Following slope collapse two trenches perpendicular to the failure were excavated to locate and identify the slip surface. The slip surface was traced and surveyed in each trench. Large diameter (300mm) and block samples were taken through the slip surface for laboratory analysis.
The author, as Research Assistant for the project, was responsible for overseeing slope formation and instrumentation installation; instrumentation monitoring and management; slope monitoring; establishing initial conditions; pore pressure recharge system construction and control; slope monitoring through failure; post-collapse investigations; site decommissioning and instrument data processing.
This Thesis presents a detailed case history tracing the geometry, nature and development of the failure. Information detailing the background to the project, site geology, pore pressure recharge system and instrumentation systems is presented. The performance of the instrumentation and its ability to describe the failure is discussed. The processes and mechanisms considered to have been operating as the slope progressed from a stable to an unstable state and eventually to collapse are described and discussed.
Notable findings of the study are the demonstration of dilation occurring at the developing slip surface during failure and the identification of a progressive failure mechanism with a bottom-top-middle order of slope movement. Processed instrumentation results and survey data are presented
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Published date: 1996
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Local EPrints ID: 460211
URI: http://eprints.soton.ac.uk/id/eprint/460211
PURE UUID: f298b4a1-aac7-4c1f-a0f1-84a0c7e16ce2
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Date deposited: 04 Jul 2022 18:12
Last modified: 16 Mar 2024 18:36
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Author:
David Ian Grant
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