Underground construction of tunnels and caverns is an ever challenging project by virtue of the likelihood of encountering uncertain ground conditions. This is true despite all advancement in the field of prediction tools, equipment and instrumentation. One major factor leading to such uncertainties...

Stability of structures in any mining excavation is critical and roof rock stability has long been the primary concern in all underground excavations. There are plenty of supports systems that has evolved over the years, among them rock bolts are widely used support system in mining and various civil...

In this paper a new methodology for evaluation and classification of support system that can be applied to rock tunneling is discussed. It is of great importance to consider long-term stability of rock mass around the openings of underground structure, during design, construction and operation. Varying...

With the decrease in the over ground utilizable space and increase in growth of metro structures, cut and cover structures are becoming rather impossible to conceptualize and construct. Hence they are slowly replaced by underground openings made by NATM methods. These tunnels could be using rock bolts...

Stability of rock slopes in many civil engineering projects involves installation of rock bolts for stabilization. Uncertainty in input parameters that determine the stability of rock slopes may lead to uncertainty in evaluating the factor of safety. Design of installed rock bolts must be optimized for...

Fault zones, shear bands, underground water channels and other features in the Himalayan geology have made tunneling a very complex activity in the region. The major hydropower projects present construction problems but also render the project economically tough to handle. A case study is presented in...

There has been a rapid advancement of shotcrete technology in international sector since the first Indian shotcrete code was published. Recommended practice for shotcreting (IS 9012) was first published in 1978 and reaffirmed in 2002. The provisions in certain clauses of this code are inadequate. Hence,...

Carrying out civil works related to development of infrastructure towards Public Transport System is a challenging task in the present day urbanization condition. Such worksin City like Bangalore where there is acute shortage of space and Geology controls the progress of construction of metro rail corridor....