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Fundamental and applied issues of mining

2019 year, number 1

ASSESSMENT AND CONTROL OF GEOTECHNICAL RISKS IN CONSTRUCTION OF UNDERGROUND STRUCTURES ON THE EXAMPLE OF THE BAM TUNNELS

M. O. Lebedev, K. V. Romanevich
SJC Research, Design and Survey Institute “Lenmetrogiprotrans”, Saint Petersburg, Russia
Keywords: Геотехнические риски, оценка рисков, контроль рисков, геотехнический мониторинг, железнодорожный тоннель, Байкало-Амурская магистраль, Geotechnical risks, risk assessment, risk control, geotechnical monitoring, railway tunnel, Baikal-Amur Mainline

Abstract

The paper reviews a new approach to quantitative geotechnical risk assessment. This approach is applicable to a preliminary rough risk assessment based on a simplified quantitative classification of hazards for tunnel projects. We consider its applicability on the example of the railway tunnels on the Baikal-Amur Mainline. Quantitative risk assessment for the BAM tunnels is performed retrospectively - mainly the design and construction stages are taken into account. The expediency of developing similar algorithms for a more detailed assessment and forecasting of current geotechnical risks, as well as for the dynamic control of risk level changes during construction and operation using the integrated geotechnical monitoring system for both transport tunnels and other underground structures has been proved.