Method and apparatus for boring and shearing of rocks
OwnerDennis Mrazinventor
Life of this patent
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Abstract
A method of rock cutting where, as a first step of each excavation cycle, a second open surface is created utilizing boring method and, as a second step, the excavation cycle is completed utilizing a shearing method; and a cutting element for excavation of rocks comprising both a boring tool and a shearing tool, wherein the cutting element can be remotely adapted either for boring or for shearing.
Claims10
A method of cutting rock in a heading where, as a first step of each excavation cycle, boring a first and a second open surface to a predetermined depth in a face of the heading utilizing a single cutting means configured as a boring means and, as a second step of the excavation cycle, shearing the heading to the predetermined depth utilizing the single cutting means reconfigured as a shearing means.
A cutting element for excavation of rock comprising both boring means and shearing means, wherein the cutting element can be remotely reconfigured to be the boring means for a boring operation and as the shearing means for a shearing operation.
A method of rock cutting in a mining operation in which a face is defined by a substantially vertical surface, comprising the steps of:
- boring into the face to a predetermined boring depth with a single cutting means configured as an axially advancing boring means;
- and
- shearing the face with the single cutting means reconfigured as a laterally movable shearing means to form a new face spaced inwardly of an original face by a distance corresponding substantially to the predetermined boring depth.
A method of rock cutting in a mining operation in which a face is defined by a substantially vertical surface, comprising the steps of:
- boring into the face to a predetermined boring depth with an axially advancing boring means;
- retracting the boring means from a shearing means;
- and
- shearing the face with the shearing means, the shearing means moving laterally to form a new face spaced inwardly of an original face by a distance corresponding substantially to the predetermined boring depth.
Dependencies are inferred from the claim text.