<p>This Geoguide presents a recommended standard of good practice for rock cavern application and design in Hong Kong. The contents of this guide are derived from Scandinavian practice with suitable modifications for application in Hong Kong.</p>

<p>Stability and potential failure mode of tunnels and underground rock caverns are directly related to the magnitude and orientation of the in-situ rock stress. In some cases, the high horizontal in-situ stress is essential in maintaining cavern stability, ...

<p>As the depth of mining increases, the occurrence of seismic events is becoming a more common phenomenon causing serious problems regarding to the stability and safety of mines. However, seismicity and the accompanying rockburst phenomena are not a well-defined ...

Physical testing of rock support for rockbursting conditions has been carried out for over 40 years. A review of this testing shows that it has been mostly component–based, rather than actually testing support systems. Further, it is concluded that none of ...

It is inappropriate, if not meaningless, to attempt to apply limit state design methods, such as those encapsulated in Eurocode 7, to the design of primary support for tunnels in rock, particularly weak rock or any rock under high stress. By reference to some ...

Tests were intended to measure the performance of drilled shafts in rock that is representative of the lower bound conditions that might be expected for foundations of this type.

The shotcrete – rock interaction is very complex and is influenced by a number of factors. The influence of the following factors was investigated by a series of numerical analyses: the surface roughness of the opening, the rock strength and Young´s modulus, ...

The drive for mechanization of stoping operations on South African platinum, gold and chrome mines is favouring stope support by rock bolts rather than the traditional volumefilling support methods such as mine poles. Many of the stopes are less than two metres ...

The Lisheen Mine is an underground operation sited in the midlands of Ireland. Using a combination of open stoping and room and pillars 1.5mtpa of zinc /lead ore are mined The ore body is essentially tabular with a general thickness of 3-8metres but with large ...

Wire mesh has been used for surface ground support in mining since the 1950s. Experimental studies have been conducted throughout the world. The response of the mesh is dependant on the sample size, the boundary restraint systems and the loading conditions. ...