<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 ...

Overstressing of the rock surrounding a tunnel can result in either brittle fracture of the intact rock or shear failure along pre-existing discontinuities such as joints or shear zones. These two types of failure can co-exist and the extent to which the failures ...

Coal mine bursts have represented a major hazard for U.S. mining operations for more than 90 years. During this time, many prevention controls have been developed and tested. This paper reviews 11 prevention control techniques. Although coal mine bursts are ...

The large number of rock falls, the danger associated with such events and the frequency of their occurrence, especially in the deep mining activities in South Africa, has led to the development of a smart material (Smartbolt TM). Some 50% of underground fatalities ...

The Guideline for the Compilation of a Mandatory Codes of Practice to Combat Rockfall and Rockburst Accidents (2001) requires regular monitoring of the performance of support systems in important excavations. The guideline for complying with the Mine Support ...

The first crush pillars on the Bushveld Platinum mines were introduced at Union Section in 1978. Before the introduction of crush pillars, serious problems were experienced when stoping advanced to a point 30 m to 40 m on both sides of the centre gully. At ...

<p>The notes are intended to provide an insight into practical rock engineering to students, geotechnical engineers and engineering geologists.</p>

This research has attempted to construct the stress and convergence profiles of the pillar in order to evaluate the ultimate strength, pillar deformation modulus, visco-elastic deformation, and violent failure characteristics during longwall mining. This information ...

<p>The results of studies of the initiation and propagation of fracture from a single Griffith crack in a biaxial compressive stress field are reported in this paper.</p>