Techniques in Underground Mining - Selections from by Richard E. Gertsch, Richard Lee Bullock

By Richard E. Gertsch, Richard Lee Bullock

This ebook involves chosen fabric from the out-of-print commonplace, Underground Mining equipment guide. greater than forty chapters protecting such underground mining themes as sampling, making plans, reserve research, rate calculations, numerous tools of help, block and panel caving, and sublevel caving make up this accomplished textual content. various tables and figures increase the huge fabric present in every one bankruptcy. a good educating software and resource publication, this e-book is a needs to for any mining scholar or engineer.
entrance subject
• Preface
• desk of Contents
•Section 1. assessment 1. Ore Reserve Calculation
2. determining an Underground Mining approach
three. common Mine making plans
four. Sampling, Dilution, and restoration
•Section 2. tools Requiring minimal aid five. Room-and-Pillar approach to Open-Stope Mining
6. construction equipment of Noncoal Room-and-Pillar Mining
7. Open Stope Mining on the Magmont Mine, Bixby Missouri
eight. Sublevel Stoping
nine. issues for Sublevel Stoping
10. Excavation layout and Mining tools within the 1100 Orebody, Mount Isa Mine, Australia
eleven. Stråssa Mine
12. Sublevel Stoping on the EB mammoth Reefs at Loraine Gold Mines, Ltd.
thirteen. huge Blasthole Stoping at Rødsand Gruber, Norway
14. Vertical Crater Retreat: a tremendous Mining procedure
15. Crater Blasting approach utilized to Pillar restoration at Falconbridge Nickel Mines Ltd.
sixteen. expense Calculations for Sublevel Longhole Stoping
17. expense Estimation for Sublevel Stoping - A Case learn
•Section three. Stopes Requiring extra aid except Pillars 18. Shrinkage Stoping: An creation
19. Shrinkage Stoping on the Crean Hill Mine
20. Shrinkage Stoping on the Idarado Mine
21. expense Calculations for Mechanized Shrinkage Stoping
22. Cut-and-Fill Stoping: An creation
23. ideas of Stope making plans and format for flooring regulate
24. Cut-and-Fill at Mount Isa Mines Ltd.
25. The Zinc company, Ltd., and New damaged Hill Consolidated, Ltd.
26. Cut-and-Fill Stoping at famous person Mine
27. Cut-and-Fill Stoping at fortunate Friday Mine
28. Cut-and-Fill on the Bruce Mine
29. Cut-and-Fill at Homestake Mining Co.
30. rate Calculations for hugely Mechanized Cut-and-Fill Stoping
31. Undercut-and-Fill Mining: An advent
32. Undercut-and-Fill Mining as Practiced by way of Homestake Mining Co.
33. Undercut-and-Fill Mining at Falconbridge Mine of Falconbridge Nickel Mines Ltd.
34. fee Calculations for Underhand Cut-and-Fill Mining
•Section four. Sublevel Caving 35. Sublevel Caving: An advent
36. The Mechanics and layout of Sublevel Caving platforms
37. Sublevel Caving at Craigmont Mines Ltd.
38. Sublevel Caving on the Stobie Mine, Inco Metals Co.
39. Sublevel Caving at LKAB's Kürunavaara Mine
forty. making plans Economics of Sublevel Caving
•Section five. Block and Panel Caving forty-one. Block Caving: basic Description
forty two. Climax Panel Caving and Extraction procedure
forty three. San Manuel Mine
forty four. The Henderson Mine

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Additional resources for Techniques in Underground Mining - Selections from Underground Mining Methods Handbook

Example text

3. For caving methods, the available techniques are sublevel caving and block caving. 1. Due to the uniqueness of each ore deposit, the variations on each of these methods are nearly limitless. It is impossible to include even the major variations in this chapter; the goal of this chapter is to present the principles as a guide to the mining engineer in adapting the general methods to specific needs. The selection process described herein is intended to supply the techniques by which the candidate methods available for a given orebody can be reduced to one or two feasible approaches.

In narrow orebodies, parallel holes or holes in a fan-shaped pattern may be feasible and may be preferable to a ring pattern. Two principal drilling systems are used. 8 m (4 to 6 ft) sections. ). The hole length varies with the hole pattern, but Next Page 56 Choosing an Underground Mining Method normally does not exceed 24 m (80 ft). Longer holes are possible, but they may cause problems as a result of deflection from the intended direction. Recently, the application of down-the-holehammers has become common in sublevel stoping.

Certainly geostatistics does entail a relatively large amount of computation, involves somewhat “heavy“mathematical and statistical terminology, and generally requires the use of a computer. This, however, does not mean that the work need be done in isolation from the geologic staff. In fact, geologic cross sections, bench plans, and most important, the acquired understanding of the orebody by the geologic staff in terms of the lithologic, structural, or other controls on the mineralization, is of paramount importance in any geostatistical study.

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