Ground heave due to line injection sources. (July 2015)

• Record Type: Journal Article
• Authors: Kim, Jueun; Selvadurai, A.P.S.
• Is Part Of: Geomechanics for energy and the environment. Volume 2(2015)
• Page Start: 1
• Page End: 14
• Publication Date: 2015-07
• Subjects: Biot poroelasticity -- Pressurized reservoirs -- Geologic sequestration -- Tensile stress states -- Failure potential; Engineering geology -- Periodicals; Power resources -- Periodicals; Energy development -- Technological innovations -- Periodicals; Engineering geology -- Environmental aspects -- Periodicals; Energy development -- Technological innovations; Engineering geology; Engineering geology -- Environmental aspects; Power resources; Geology -- Periodicals; Energy-Generating Resources -- Periodicals; Periodicals; Electronic journals; 621.042
• DOI: 10.1016/j.gete.2015.03.001
• Languages: English
• ISSNs: 2352-3808

Abstract

Abstract: This paper examines the geomechanical effects resulting from the injection of a non-reactive fluid along a line segment located at the interior of a poroelastic halfspace. The mechanical behaviour of the geologic medium is described using Biot's classical theory of poroelasticity. The mathematical solutions for the surface heave associated with a point injection source are used to develop results for the ground heave associated with both vertically-aligned and horizontally-aligned line injection sources of constant intensity and finite length. The results obtained from the mathematical analysis are used to benchmark computational results for analogous problems. Highlights: An analytical solution for the poroelastic problem associated with a line injection sources is developed. Numerical results that can be used as a first approximation of ground heave for different line injection lengths are presented. The potential of failure development at the injection zone is examined. Provides validation of a computational approach.