Publications Details
Application of fracture mechanics in geological materials1
Application of conventional fracture mechanics concepts to treat crack growth and failure problems in geological media is discussed in this paper. Conventional fracture mechanics methods were developed mainly for metallic materials which exhibit nonlinearity associated mainly with plasticity type responses. Thus, these are not directly applicable to geological materials whose inelastic responses originate from inherent large-scale heterogenities, microcracking, strain softening, etc. Proposed fracture mechanics methods for geological materials and their associated problems are discussed. To demonstrate the utility of fracture mechanics concepts in geological applications, examples involving multiple-fracture generation in tight gas formations and oil shale blasting design are presented.