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MISG January 2007 Rock mass damage associated with pre-split blasting in surface mining

MISG January 2007 Rock mass damage associated with pre-split blasting in surface mining. MISG January 2007. Industry contact: - Alan Naismith SRK Consulting mobile: 083 267 7458 land line 011 441 1142 e-mail: anaismith@srk.co.za. MISG January 2007. What is pre-split blasting?

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MISG January 2007 Rock mass damage associated with pre-split blasting in surface mining

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  1. MISG January 2007Rock mass damage associated with pre-split blasting in surface mining

  2. MISG January 2007 Industry contact: - Alan Naismith SRK Consulting mobile: 083 267 7458 land line 011 441 1142 e-mail: anaismith@srk.co.za

  3. MISG January 2007 What is pre-split blasting? Why is it important in surface mining?

  4. MISG January 2007 Example of damage caused by blasting

  5. MISG January 2007 • How does a pre-split work?

  6. MISG January 2007

  7. MISG January 2007

  8. MISG January 2007 But everything doesn’t always go to plan!

  9. MISG January 2007

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  11. MISG January 2007 RESEARCH QUESTIONS:- • What dynamic forces are created near to the mouth of the hole that could lead to “anomolous” fracture patterns? • What must be done to modify these forces and minimise or eliminate these “anomolous” fracture patterns?

  12. MISG January 2007 Industry contact: - Alan Naismith SRK Consulting mobile: 083 267 7458 land line 011 441 1142 e-mail: anaismith@srk.co.za

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