The QuickShot system combines pre-programmed electronic detonators with special on-bench components that enable the user to quickly and easily design the firing sequence solely by using the order of connections. This precludes the user from having to deal ...

It is anticipated that the work presented in this thesis will contribute towards the understanding of the mechanical behaviour of the blast Ȭinduced damaged zone around underground excavations in hard rock masses.

The aim of this paper is to introduce a robust methodology for the analytical calculation of strains in flexible buried pipelines due to surface point-source blasts.

<p>In this paper an analysis of in situ rock mass modulus measurements for a wide range of rock types from China and Taiwan has resulted in two new equations for estimating rock mass deformation modulus.</p>

This paper addresses application of microseismic event monitoring system in excavation of highly stressed rock mass in underground oil storage caverns. The locations and magnitudes of microseismic events were determined using a network of 12 uniaxial sensors. ...

<p>Overbreak is a considerable cost factor in underground construction. In literature virtually no information is available relating rock mechanical parameters quantitatively to overbreak. During the construction (drilling, blasting&amp;mucking) of the Soumagne ...

Three methods of in situ deformation modulus (Em) measurements of rock masses have been described, analysed and compared. The plate jacking (PJT) test, where the deformations are measured by extensometers in drill holes, gives generally the best results. A ...