Abstract Accurate description of the failure strength behaviors rock materials, including intact rocks and jointed masses, is essential for engineering design construction. First, a novel three-dimensional (3D) version Hoek–Brown (HB) criterion proposed in this paper. A stress weighting factor n used to describe effects intermediate minimum principal stresses. The 3D validated using six sets po...

The fracture of interfacial crack is the main failure type jointed rock mass. Therefore, it very important to study For similarity mass and composites (all are composed by two parts, intact materials their contact interfaces), interface mechanics widely used for analysis (bimaterials) can be applied based on basic theories mechanics, was analyzed, one new criterion initiation proposed. Moreover...

We develop a model for the propagation of a fluid-filled crack in a porous medium. The problem is motivated by the mechanism whereby drainage networks may form in partially molten rock below the Earth‘s lithosphere. Other applications include the propagation of hydraulic fractures in jointed rocks and in oil drilling operations, and the formation of dessication cracks in soils. Motivated by the...

Jointed goatgrass (Aegilops cylindrica Host) is an economically important weed in winter wheat (Triticum aestivum L.)–fallow production regions of the United States. Few options exist for management of jointed goatgrass in winter wheat due to the close genetic relationship between the two species. This research evaluated use of imazamox herbicide (2-[(RS)-4-isopropyl-4methyl-5-oxo-2-imidazolin-...