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Conference Proceedings

Vl Australian Tunnelling Conference: Bore or Blast, Melbourne

Conference Proceedings

Vl Australian Tunnelling Conference: Bore or Blast, Melbourne

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Swedish Experiences of Bore and Blast in Different Rock

The choice between drill and blast and mechanical boring methods is often not obvious._x000D_
There are several factors which may have a de- cisive influence on this choice, such as the geometry and length of the tunnel, site con- ditions and borability of the rock. Both the un- confined compression strength and the joint dis- tance have a considerable influence on the net penetration rate. Site conditions, rock quality and water conditions influence the utilization of the tunnel boring machine. The drill and blast method is normally less sensitive to devi- ations from assumed ground conditions.
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  • Swedish Experiences of Bore and Blast in Different Rock
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  • Published: 1987
  • PDF Size: 0.86 Mb.
  • Unique ID: P198701055

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