Deformation Monitoring and Geohazards in Nigeria: A Critical Review

International Journal of Research and Scientific Innovation (IJRSI) | Volume VI, Issue XI, November 2019 | ISSN 2321–2705

Deformation Monitoring and Geohazards in Nigeria: A Critical Review

K. O. Ishola, P.A. Jegede

Department of Surveying and Geoinformatics, Federal Polytechnic, Ado-Ekiti, Ekiti State, Nigeria

Abstract:- Geohazards are geological and environmental conditions that involve long-term or short-term geological processes. It occur when artificial structures, such as buildings and natural structures, such as slopes are deformed in various ways. To achieve the aim of this study which is to is to facilitate comprehensive technical understanding and knowledge of the processes of monitoring geological hazards and to better appraise their impacts on engineering structures and the environment with a view to providing mitigation strategy, in order to achieve the stated objective, secondary data sourced from dailies, reports internet and other relevant research works were used. Having studied the state of geohazard and deformation monitoring control Nigeria as well as mitigation approaches to geohazards. The study concluded that the monitoring or control surveys serve not only the purpose of providing information on geometrical deviations at the surface of the investigated object but also become a tool for physical interpretation of the deformation.

Key Words: Geohazard, Deformation Monitoring, Geotechnics, Risk, Structures, Tectonic

I. INTRODUCTION

The term “geohazard” often used by the geologists and engineers to describe the hazards that maybe associated with any potential gravity-related geological or geotechnical problem or failure, such as slope instabilities, landslides, ground settlements and many others (Psarropoulos et al, 2012).Simply, geohazard denotes geological hazard, which implies a geological state that may lead to widespread damage or risk. Geohazards are geological and environmental conditions that involve long-term or short-term geological processes. Geohazards can be relatively small features, but they can also attain big magnitudes such as submarine or surface landslide that may to a large extent affect local and regional socio-economy. Evidently, geohazards are the result of a dynamic process of environmental change (Huang, 2012), that can result into huge ecological disasters that threaten human life and property (Chen et al, 2017). Similarly, Moore & Davies (2006) also noted that geohazards are geological materials, features or processes that represent commercial and safety risks for development and for the environment.

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