MINE SURVEYING MONITORING OF GEOMECHANICAL PROCESSES AND STABILITY ASSESSMENT OF THE DEWATERED HIGHWALL ROCK MASS AT THE ANGRENSKY OPEN-PIT COAL MINE USING 3D MODELING
Abstract
The results of mine surveying monitoring of geomechanical processes and stability forecast of the dewatered pit wall massif of the Angrensky coal open-pit based on volumetric geological-geomechanical models are presented. The author has developed a forecast algorithm that includes the construction of a triangulation model of the pit wall massif, the determination of physical and mechanical parameters considering moisture anisotropy, and the calculation of the stability coefficient using the limit equilibrium method. The forecast for geological sections 1–1, 2–2, and 3–3 showed an increase in the stability coefficient from 1.00–1.04 to 1.06–1.09 (an increase of 5–6%) after implementing a set of advanced dewatering measures. It has been demonstrated that the introduction of volumetric models into the practice of mine surveying support of open-pit mining improves forecast accuracy and the reliability of pit wall parameter selection.
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List of references
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