Podcast
Questions and Answers
Accelerators are commonly used in the concrete for shaft lining.
Accelerators are commonly used in the concrete for shaft lining.
False
The shaft lining reaches right to the bottom of the shaft during sinking.
The shaft lining reaches right to the bottom of the shaft during sinking.
False
Temporary ground support at the shaft bottom usually consists of welded mesh and steel bolts.
Temporary ground support at the shaft bottom usually consists of welded mesh and steel bolts.
False
The installation of temporary ground support is one of the easiest parts of the shaft sinking cycle.
The installation of temporary ground support is one of the easiest parts of the shaft sinking cycle.
Signup and view all the answers
Shotcrete is commonly used for temporary lining at the shaft bottom.
Shotcrete is commonly used for temporary lining at the shaft bottom.
Signup and view all the answers
Shafts with a cross-sectional dimension of 3.7 meters or over and an inclination to the horizontal of less than 15 degrees cannot exceed a speed of two meters per second for traction.
Shafts with a cross-sectional dimension of 3.7 meters or over and an inclination to the horizontal of less than 15 degrees cannot exceed a speed of two meters per second for traction.
Signup and view all the answers
Communication in shafts is predominantly done through telepathy due to safety concerns related to electronic devices.
Communication in shafts is predominantly done through telepathy due to safety concerns related to electronic devices.
Signup and view all the answers
Ventilation systems in shafts function to pass ventilation air into the underground workings (downcast) but not out of the underground workings (upcast).
Ventilation systems in shafts function to pass ventilation air into the underground workings (downcast) but not out of the underground workings (upcast).
Signup and view all the answers
Shafts are used as passage ways for engineering resources such as electric power cables, compressed air, and water supply columns, but not for pump columns for surplus underground water.
Shafts are used as passage ways for engineering resources such as electric power cables, compressed air, and water supply columns, but not for pump columns for surplus underground water.
Signup and view all the answers
The shaft orepass system is primarily used for transporting personnel up and down the mine safely.
The shaft orepass system is primarily used for transporting personnel up and down the mine safely.
Signup and view all the answers
Safety measures in shafts are managed by enforcing strict regulations and ensuring proper training for all personnel.
Safety measures in shafts are managed by enforcing strict regulations and ensuring proper training for all personnel.
Signup and view all the answers
Shafts with an inclination to the horizontal of more than 15 degrees have a speed of traction limited to two meters per second.
Shafts with an inclination to the horizontal of more than 15 degrees have a speed of traction limited to two meters per second.
Signup and view all the answers
The main functions of a shaft include ventilation air passing, exploration of water sources, and transportation of machinery.
The main functions of a shaft include ventilation air passing, exploration of water sources, and transportation of machinery.
Signup and view all the answers
Shafts are essential for the raising and lowering of men and materials underground but are not involved in the hoisting of rock mined.
Shafts are essential for the raising and lowering of men and materials underground but are not involved in the hoisting of rock mined.
Signup and view all the answers