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Question 1.
Describe a tunnel-boring machine in detail and cite examples of their use. Particular emphasis should be placed on the cycle of operations for such a machine.
Question 2.
Describe the methods of mechanised tunnelling available. What are the advantages of mechanised methods of tunnelling over drill and blast methods?
Question 3.
Occupational health and safety is the primary criterion used in designing and undertaking mine development. Discuss this statement.
Question 4.
Describe the steps one would take when tunnelling through areas where the potential for an inrush of water exists. Detail the methods can be applied to minimise the risk of an inrush in such circumstances.
Question 5
A 6 m diameter TBM has been selected to undertake a tunnelling operation. It is to operate at 4 rpm with a cutter head power of 750 kW in medium strength rock. Determine the predicted machine excavation rate using the nomograph presented in the notes.
Question 6.
Describe with the aid of a diagram a typical blast design for a rectangular tunnel. Particular emphasis should be placed on identifying the cut, easer, trimmer and lifting holes. Why in such a round where ANFO is used for the majority of the holes might a more water resistant product be used in the lifter holes?
Environmental engineering, CEE 357 Win 2014 HW#3, A solution contains 3 x 10 -4 M H 2 CO 3 and 1.5 x 10 -3 M HCO 3 - . How much CO 3 2- is in the solution?
gain and output noise power, Third Order Intermodulation Products, G/T specification, G/T ratio, 2G system architecture, polar orbiting satellites and geostationary satellites, INTELSAT and INSAT satellites, RF communication system
What is the population equivalent of the waste and what degree of treatment (% BOD satisfied) does this represent, assuming the plant influent to have a BOD5 of 250 mg/L
Describe the various methods of methane drainage available to drain gas for longwall mining operations and methane drainage of longwall operations what factors influence the spacing of drainage boreholes?
Prepare a schematic diagram below of the major parts of the SEM
Analyze heat lost from a 6-inch OD steam line. The line carries high-pressure steam throughout the factory at 400 psi, 400 oF. Specify type and thickness for insulating the steam line.
(a) What are the three simple categories of conventional welding? Which of the three is the cleanest and most healthful? Explain your answer (b) Why should acetylene cylinders be stored valve end up? Explain the safety measures required for the st..
determine the value of the suspended tension load at the top of drill pipe and using the graph of pore/fracture pressure for the Holly Field propose a casing scheme for the well using the graphical approach. Discuss the suitability of the selected..
Design a suitable vapour compression refrigeration system to achieve this duty, a suitable chilled water piping system to achieve the required duty and suitable heat rejection facilities for the refrigeration plant using a cooling tower.
What is happening to the a 0 dimension of the unit cell of the andalusite crystal structure, when it is being heated?
The project will consist of a written paper and a presentation - Egress and Life Safety Analysis - FIRE 4500 (FIRE 2225)
Find the economic life, with interest rate 12%, of an asset. Initial cost is $5,500. Operation cost is $1,200 per year. Salvage value decreases 15% of new value per year.
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