Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Unified fracture, stress and permeability studies
Summary Coreholes can be used to determinein situ fracture (or joint) system, state of stress, and rock permeability by utilizing only one set of equipment. A “straddle packer”, consisting of two inflatable rubber sleeves, is lowered to specified depths in the core hole and permeability tests by either the “constant head” or “pulse” methods are conducted. The same set-up is then used for hydrofracturing stress measurements. An “impression packer” is subsequently lowered to obtain hydrofracture orientation and complete the stress measuremens. The same tool is also used to orient key natural fractures, which together with a “scribe fracture logging” of the core help define the joint sets in the rock mass. Case histories are cited.
Unified fracture, stress and permeability studies
Summary Coreholes can be used to determinein situ fracture (or joint) system, state of stress, and rock permeability by utilizing only one set of equipment. A “straddle packer”, consisting of two inflatable rubber sleeves, is lowered to specified depths in the core hole and permeability tests by either the “constant head” or “pulse” methods are conducted. The same set-up is then used for hydrofracturing stress measurements. An “impression packer” is subsequently lowered to obtain hydrofracture orientation and complete the stress measuremens. The same tool is also used to orient key natural fractures, which together with a “scribe fracture logging” of the core help define the joint sets in the rock mass. Case histories are cited.
Unified fracture, stress and permeability studies
Haimson, Bezalel C. (Autor:in)
1982
Aufsatz (Zeitschrift)
Englisch
Unified fracture, stress and permeability studies
| Online Contents | 1982
Fracture closure in extension and stress dependent permeability of jointed rock
| British Library Conference Proceedings | 2000
In-situ stress and fracture permeability in the Long Valley Caldera
| British Library Conference Proceedings | 1995
A unified model for fracture mechanics
| British Library Online Contents | 1996
Fracture network geometry and relative permeability
| British Library Conference Proceedings | 1999