Do the blast design to facilitate the production request
Course:- Other Engineering
Reference No.:- EM132369458

Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Other Engineering

Assignment: Design Project

1. A new coal mining operation is to be worked employing surface mining using blasting to clear an overburden of Shale using 150mm holes and 11m benches. Dry rock conditions are anticipated and the decision is to use bulk ANFO with emulsion cartridges as a primer. The density of compacted ANFO = 0.85 g/cm3 and the PF is expected not less than 0.65 kg/m3. You are required to do the blast design to facilitate the production request of stripping 2,000,000 m3 overburden annually, including the followings,

(1) Drilling and blasting schedule and production;
(2) Blasthole drilling pattern;
(3) Details of blasthole parameters, e.g. burden and spacing, subdrill and inclination;
(4) Details of blast control techniques employed;
(5) Blast circuit / initiation pattern.

Please include a design drawing whenever appropriate for each of the design.

2. Illustrate with suitable cross-section sketches showing ore and waste components, how overall stripping ration can be;
a. Constant
b. Increasing
c. Decreasing over the life of an open-pit mine.

3. Two surface mines are considering the use of a conveyor in conjunction with their current fleet of trucks and shovels. The mines are;

i. a strip mine operation in which coal is transported out of the strip from a depth of 37m to a coal plant on surface, at a rate of 1.2 million tons per month.

ii. an open-pit operation in which coal and waste are transported from a depth of 300m to either a waste dump or a processing plant on surface, at a rate of 1.22 million tons per month (ore) at a stripping ratio of 3:1.

Give advice to the mines concerning the practicality and utility of using a conveyor to either replace or supplement the existing systems with proper justification.

Give advice to the mines as to what extra additional equipment they may need if they were to combine existing and new conveyor systems with proper justification.

4. A coal strip mining is designed to use dragline operation as illustrated below. The swell of the spoil is 1.25 to 1.30. You are required to design the effective radius Re and select a dragline that is suitable to the mine. Ho = 16 m, Hc = 4.5 m, pit width = 40 m, Φo = Φc = 70°, θ = 40°.


Put your comment

Ask Question & Get Answers from Experts
Browse some more (Other Engineering) Materials
Consider a bipolar cascode amplifier biased at a current of 1 mA. The transistors used have β = 100, ro = 100 KΩ , Cπ =10 pF, Cμ =2 pF, Ccs =0, and rx =50Ω. The amplifier is
Integrated Design Experience Project - Aromatics from Shale Gas Transport Phenomena, CHE 306 2016 - Calculate the purchase cost of a shell and tube heat exchanger using the me
Assignment - Audio connectivity and interface techniques. Learners are required to produce a report explaining the fundamental processes and operation of the following digita
Explain the role that inductive and deductive reasoning play in the decision-making process. Analyze how emotion and culture affected the process. Describe the problem solving
If the 6-in.-pipe in has a pressure drop of 0.2 psi in a given length, what is the pressure drop in the 4-ft-diameter pipe in a length that is 1000 times that of the smaller
Calculate the current (I) that it will draw and the resistance (R) of the heating elements. If for some reason the resistance suddenly falls to 2 Ω during use, what would be
The Soave-Redlich-Kwong equation is a commonly used cubic equation of state, second in popularity only to the Peng-Robinson Equation of state. In this problem, just derive t
For each inverter, find the value of Gm. For a bit-line capacitance of 0.4 pF, and a delay until an output of 0.9VDD is reached of 1 ns, find the initial difference voltage