10 Questions
Shrinkage stoping refers to a mining method in which broken ore is permanently removed from the stope during active mining.
False
Shrinkage stoping involves excavating the ore in horizontal slices, starting at the top of the stope and advancing downward.
False
When the stoping has advanced to the upper limit of the planned stope, the drilling and blasting are discontinued, and the remaining 60 to 70% of the ore can be recovered.
True
Smaller orebodies can be mined with a single stope, whereas larger orebodies are divided into separate stopes with intermediate pillars to stabilize the hanging wall.
True
Shrinkage stoping does not require the drawing off of broken ore to maintain a suitable working space.
False
What is shrinkage stoping in underground mining?
Shrinkage stoping refers to any mining method in which broken ore is temporarily retained in the stope to provide a working platform and/or to offer temporary support to the stope walls during active mining.
How is the ore excavated in shrinkage stoping method?
In shrinkage stoping method, the ore is excavated in horizontal slices, starting at the bottom of the stope and advancing upward.
What is the percentage increase in occupied volume of the blasted ore in shrinkage stoping?
The blasted ore increases its occupied volume by 30 to 70%.
What is the process when the stoping has advanced to the upper limit of the planned stope in shrinkage stoping?
When the stoping has advanced to the upper limit of the planned stope, the drilling and blasting are discontinued, and the remaining 60 to 70% of the ore can be recovered.
How are larger orebodies mined in shrinkage stoping?
Larger orebodies are divided into separate stopes with intermediate pillars to stabilize the hanging wall.
Test your knowledge of underground mining with this quiz on shrinkage stoping, a method where broken ore is temporarily retained in the stope to provide support. Learn about the techniques and principles of this mining method.
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