It is the mining process in which a level is divided into several sublevels and the stop** of ore is performed by sublevel caving from top to bottom. The lower part of a sublevel does not have the bottom structure comprised of the special-purpose ore-drawing drifts. The rock drilling, ore breaking, and ore removal in a sublevel proceed sequentially in one stop** drift of the sublevel; squeezing blasting proceeds with a small ore breaking step towards the caving area; the caved ore is in the loose overlying rocks and can be directly taken out from the end of the stop** drift; then the ore is conveyed by the loading equipment to the orepass and then slipped from the orepass to the level haulage drift outside the vein.
Principle and Parameters
A drift horizontally dug at a sublevel is usually a stop** drift or connection drift. The cutting drift and slot raise are dug at the end of the stop** drift. An upward fan-shaped medium-length hole is drilled in the middle part of the...
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Further Reading
Editorial Board of Mining Handbook (1988) Mining handbook. Metallurgical Industry Press, Bei**g
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Fengyu, R., Kuangdi, X. (2023). Sublevel Caving Method Without Sill Pillar. In: Xu, K. (eds) The ECPH Encyclopedia of Mining and Metallurgy. Springer, Singapore. https://doi.org/10.1007/978-981-19-0740-1_342-1
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