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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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The Application of Hydraulic Fracturing to the Assessment of Lining Requirements for a Pressure Tunnel

A programme of hydraulic fracture stress measurements conducted in surface drill holes along the alignment of the King River Power Tunnel has provided information of importance to the assessment of the extent of steel lining requirements for the tunnel. A significant horizontal stress field has been detected at a location remote from the power station site, with a corresponding absolute minimum stress magnitude approximating the overburden pressure based on depth of cover._x000D_
Measurements made closer to the power station site (located toward the bottom of a valley) have revealed an apparently relatively destressed region with minimum stress magnitude less than overburden pressure. The implications of these results are discussed.
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  • The Application of Hydraulic Fracturing to the Assessment of Lining Requirements for a Pressure Tunnel
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  • Published: 1987
  • PDF Size: 1.147 Mb.
  • Unique ID: P198701056

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