Mining, Other Engineering

Assignment Help:
Students are to undertake a tunnel blast design for the following conditions:
• Tunnel is 5.5m wide by 5.5.m high
• Rock is a granite with a UCS of 300 MPa
• Drill hole diameter is 51 mm, hole length is 4m
• The cut is to contain 2 relief holes of 75mm diameter
• Dry conditions are anticipated, ANFO to be used with a density of 800 kg/m3 and a powder factor of 0.6 kg/m3
• Nonel detonators are to be used
Students are to determine:
1. The design of the cut, including burden and spacing for each element of the cut.
2. Burden and spacing of the easer, perimeter and lifer holes
3. Stemming length required
4. Method of hole priming
5. Firing sequence timings for the holes
6. Explosive utilisation
Results should be presented in a report format, including diagram s as required and details of calculations undertaken.

Related Discussions:- Mining

Flight dynamics-trim tabs, Trim tabs are small flaps attached to the rear o...

Trim tabs are small flaps attached to the rear of the main control surfaces. They can be adjusted the pilot to reduce the force required to hold the control surface in its deflecte

Electronic project help, i have a project to do a remote control car by wir...

i have a project to do a remote control car by wired and the car should go foreword and backward by increasing the speed from the joystick(1) and the sound joystick control the dir

Blade twist - aircraft engine, BLADE TWIST: Rotational velocity and its...

BLADE TWIST: Rotational velocity and its effect on the Angle of Attack depends on the radius of the blade element in question. A blade element near the blade root (hub) will h

Case Let, This case has been framed in order to test the skills in evaluati...

This case has been framed in order to test the skills in evaluating a credit request and reaching a correct decision. Perluence International is large manufacturer of petroleum and

Assignment on cost of capital, Atlas Inc. is planning to invest in a 4-year...

Atlas Inc. is planning to invest in a 4-year project which has the same risk as the firm’s existing assets and operations. The project requires a $150,000 initial investment and is

Assignment #5, the date december 13, 2005. Air traffic controllers in a con...

the date december 13, 2005. Air traffic controllers in a control tower in

Diod, i donot under stand about diod and transistor

i donot under stand about diod and transistor

Factors affecting accuracy, Factors affecting accuracy 1. The transduce...

Factors affecting accuracy 1. The transducer must be located in an appropriate place and with an appropriate orientation to measure the measurand accurately. 2. The introduc

#titleMetrics.., Suppose you are managing a software-development project fo...

Suppose you are managing a software-development project for which reliability is a major concern. A continual stream of anomalies is discovered in the software during the testing p

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd