The loosening holes outside the plough cut are also drilled at an angle which improves the breakage possibility.
sublevel undercut caving method
Study on Effect of Symmetry of Wedge-shaped Cutting Hole Angle on Cut Blasting
The Norwegian cut can provide more dependable advance per round than the plough cut.
During recent years the seam cut has once again come into use.
Study of Method of Conducting Smooth Blasting in Weak and Soft Surrounding Rocks
If the charge used is too large, the rock can become sintered so that the cut used is a failure.
Numerical Simulation Research of Charging Optimization in Spiral Cutting Blasting in Medium Deep Bore
Application of cut blasting in trench digging technique in the middle of the stope
A Study and Application of Methods of Longhole Cutting and Joint-cutting Cartridge in Shaft Excavation Blasting;
The kibble hole arrangement optimization of tunnel digging blasting of Daanshan mine
Discussion About Blasting Footage and Cutting Patterns of Circular Tunnel in Supper Hard Rock
Popularization and Application of Deep-hole Blasting Technique in Bottom Compound-term Wedge Cutting
Design of Combination of Smooth Blasting and Double-wedge Cut for Roadway Excavation
Application of Combined Slotting in Driving Hard Rock Roadway
Research on Size Effect of Empty Hole in Horizontal Roadway Cut Blasting & Accumulating Characteristic of Surrounding Rock Damage Caused by Frequently Blasting Vibration;
Blue Glasses pulled out his card, saying, "Did you return to China yesterday, Dr. Fang?"
The notch cut into a key that corresponds to such a ridge.