DETERMINING DEFLECTOR PARAMETERS WHEN SINKING HORIZONTAL HOLES IN SOIL
B. B. Danilov, A. A. Rechkin
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Horizontal directional drilling, deflector, modified Cam-Clay model, finite element method, simulation model, design parameters
Abstract
A schematic diagram of a device for deflecting a hole trajectory during horizontally directed auger drilling is proposed. The problem of deflector interaction with soil under static loading is considered. Using modified Cam Clay model for clay soils of the Ansys finite element package, the parametric problem on determining the dependence of hole axis deflection angle and the value of hole deflection per running meter of its length on the inclination angle of the front plane of rock cutting tool is solved. The optimal value of this angle is calculated.
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