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Conference Proceedings

Symposium on Rock Bolting, February 1971

Conference Proceedings

Symposium on Rock Bolting, February 1971

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Rotary Boring and Resin Bolting at Metropolitan Colliery

Metropolitan Colliery has some areas of roof where immedi- ate support is required in development. The disadvantages of percussive roof bolting at the face have led to recent produc- tion trials with rotary boring and rapid=setting resin anchored roof bolts developed at the Colliery. The three innovations involved are: (1) the wet drilling of small holes with an all- hydraulic, portable rotary boring machine; (2) the rapidity of loading a "point anchored" resin bolt; and (3) the consistently high anchorage strength available. All three innovations provide striking advantages over the previously available alternatives. The greatest disad- vantage - that of cost of resin - is not prohibitive, and there is promise of improvement in the future. There are possibilities of variations of the techniques for special support problems in particularly difficult roofs.
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  • Rotary Boring and Resin Bolting at Metropolitan Colliery
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  • Published: 1970
  • PDF Size: 1.033 Mb.
  • Unique ID: P197101012

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