A New Methodology for Rockfall Hazard Assessment in Rocky Slopes

Abstract

This article presents an approach to rockfall hazard assessment for rocky slopes based on a previously published rockfall hazard methodology. The original method is appropriate to high alpine rocky slopes exposed to large scale deformations. It evaluates the parameters related to the geomechanical characterization of rock mass, indications of activity, external influences and event intensity. The original methodology was modified to consider different contexts, including geological, climatic and social environments. Parameters related to external influences were modified; the geometry and characteristics of the slope and the catchment area were introduced. The original methodology and the new proposal were applied to two urban slopes and one railway slope in order to test and compare the methods. The original proposal could not represent the rockfall conditions of these slopes. The new proposal was validated using two mine slopes, whose conditions of stability are known. The results of the analyses with the urban slope and the railway slope were coherent with the situation observed at the field. The validation in the mine slopes showed that this approach is applicable in several situations, being able to determine how hazardous a slope is in relation to rockfall events.

Investigation Into the Impact of Mining and Geological Structure on the Geomechanical Parameters of Open Pit Walls During Mining Operations at the Synclinal Two-Seam Coal Deposits

“…При этом в мировом случае имеется много случаев уничтожения горнотранспортного оборудования и гибели производственного персонала, как это было на месторождении медно-порфировых руд в штате Юта на территории СШа («Бингем-карьер»). В горном деле исследованиям устойчивости горных выработок при ведении как открытых, так и подземных горных работ уделяется большое внимание, о чем свидетельствуют результаты работ по геомеханике, представленные в краткой подборке тематических научных трудов [1,2,3,4,5,6,7,8,9,10]. Предложенный подход определению геометрии тех нологических параметров элементов бортов карьеров в зависимости от угла наклона угольных пластов в углевме щающей толще позволит формировать предложения по оптимизации конструкции борта карьера, удовлетворяю щей как требованиям экономической эффективности до бычи угля, так и требованиям безопасного производства открытых горных работ.…”