Federation University Australia
Federation University Australia
School of Science, Engineering and Information Technology
ENGIN 5508 Smart Engineering Technologies
Assignment 1, Concepts and Calculations (20 marks)
Due on at 16:00PM, Thursday, Week 5
There are five sessions in the Assignment 2 specifications sheet: 1 About the assignment task, 2 Intended Learning Outcomes (ILOs), 3 How to complete this assessment, 4 Marking guidelines, and 5 List of questions. Please read and understand them as detailed below before you start.
1 About the assignment task
Assignment 1 consists of conceptional and calculation questions to evaluate students commanding the ILOs outlined in Session 2. The questions cover Topic 1 in this Unit.
2 Intended Learning Outcomes (ILOs)
Through doing Assignment 1, the student is expected to achieve the following ILOs:
Conceptually and numerically interpret shaft sinking and tunnelling by drilling and blasting method (K1).
Describe mechanized tunnelling method (K2). and
Analyze and provide solutions to complex underground tunnelling problems (S2).
3 How to complete this assessment?
3.1 Requirements about the assignment are:
Answers to calculation questions shall be step by step of clear calculation processes. Answers are expected to type in a MS WORD document.
Answers to conceptual questions shall be concise (use your own words), and not more than one A4 page for each question. Answers of over length may have some mark deductions (up to 30% assigned marks). Answers are expected to type in a MS WORD document.
Adequate citations and references, e.g., IEEE style, when applicable. Please note Copy and Paste is plagiarism (please refer to the Unit description on Moodle for details). Penalty of marks applies for minor academic writing issues. If a submission is suspected of academic misconduct, it will be reported to the School Academic Integrity Officer for investigation. In such case, no marks will be reported until the investigation is concluded.
Late submission: Penalty applies for late submission (please refer to the Unit description on Moodle for details).
3.2 Plan, collect data and deliver the report on time
Firstly, plan ahead in term of what are required and time management for this assignment. Study Topic 1 on Moodle. Secondly, draft the answers, observing the expectations outlined in Session 3.1. Thirdly, write your answers in MS WORD observing academic writing requirements when applicable, and the due date of this assignment.
3.3 Submission and feedback
An electronic original MS WORD file must be submitted through Moodle on or before the due date (16pm on Thursday, Week 5). Should there is an unforeseen event that affects you to complete the assignment on time, please consider applying for special consideration timely.
The assignment will be marked by the Unit coordinator or a designated marker. Marks and feedback will be provided within three weeks from the due date through Moodle.
3.4 Questions about the assignment
The Unit Coordinator can be reached by email g.you@federastion.du.au, phone (61 3) 5327 91366, and online forum or feedback of ENGIN5515, for questions, clarification, and consultations.
4 Marking guidelines
Q1- Q5: each 3 marks, and
Q6: 5 marks.
5 List of questions
Describe the methods of mechanized tunnelling available. What are the advantages of mechanized methods of tunnelling over drill and blast methods?
What techniques are available for shaft sinking in wet and/or unstable ground? (Minimum two techniques are expected to be briefed to get full marks.)
A shaft is planned to sink to the depth of 500m below ground surface using cast-in-place concrete liner. You are required to design the thickness of the shaft liner at the depth of 100m, 300m and 500m, respectively, assuming the unit weight of rock over the depth is 27 kN/m3. (Hint: you may have to refer to the In-situ Stress Estimation in Rock Mechanics Applications and Shaft Lining Design in Ch.12.4 of the classnote.)
If the excavation diameter of the shaft is 6.0m, allowable time for mucking is 4.0hr per shift and the advance rate of shaft sinking is one round of 3.0m per shift, calculate the bucket size required for the mucking unit. (Hint: Swell factor and cycle time)
A 6 m diameter TBM has been selected to undertake a tunneling 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 monograph presented in the notes.
(a) Calculate the direct unit cost of a 5.0 x 5.0 m drill and blast development in sandstone given the following:
Rock S.G 2.6
Labour cost $400/shift including on costsProductivity 1.4m/shift
Rock bolts and mesh $25 per m2 supportedDepth drilled per round 3.6 mDepth pulled per round 3.6 mOverbreak 10%
Overall explosives cost average $2.40/kgMaterials cost excluding explosives and ground support $150/mJumbo drilling at $3.50/m drilledMucking and trimming $3.40/tonneDetail any other required assumptions.
(b) If the tunnel is 260 m long, what is the total cost for the development? How many days are required for the development? (Requirements: detail the annual working days, shifts per days.)
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