Weathering degree is one of the key criteria used to determine tunnel support with the main
difficulty is in assessing the weathering grade of the tunnel face. This study applied CIEL* a …

At the initial phases of tunnel design, information on rock properties is often limited. In such
instances, the engineering classification of the rock is recommended as a primary …

This study deals with the comparative investigation on various classification/characterization
systems for sedimentary rocks in two parts, 40 km-long of the Zagros tunnel, west of Iran …

Mining as one of the fundamental elements of the economy has left tens of thousands of
mines abandoned. With increased urbanisation and population growth, industrial or …

Engineering rockmass classifications are an integral part of design, support and excavation
procedures of tunnels, mines, and other underground structures. These classifications are …

Stability analysis and support system estimation of the Beheshtabad water transmission
tunnel is investigated in this research. A combination approach based on the rock mass …

The Geological Strength Index (GSI), Rock Mass Rating (RMR), and Tunneling Quality Index
(Q) systems are widely used rock mass classifications that have been used to determine …

In initial phase of mining and civil projects, rock mass rating (RMR) and tunneling quality
index (Q) classification systems are widely used. Because of specifying these values, it is …

Изучены факторы, влияющие на несущую способность фрикционных трубчатых
анкеров диаметром 39 мм и длиной 180 см с раздвоенным концом. Проведены …

The aim of this study is to thoroughly analyze the relaxation zone developing around
sublevel stopes in underground mines and identify the main parameters controlling its …