Study on the long-hole raising technique using one blast based on vertical crater retreat multiple deck shots
Backfilling inaccessible cavity through raise can provide underground support for the active open-pit operations and the raise must be taken down in a single blast for safety reasons. Conventional raising techniques are not economically and technically feasible, and the maximum advance depth in one...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Pergamon
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/69945 |