Mine Surveying.., Question 1 (100 marks) As Surveyor in charge of an underground mine you, Other Engineering

Mine Surveying.., Other Engineering

Assignment Help:

Question 1 (100 marks)
As Surveyor in charge of an underground mine you have been instructed to design a tunnel to join a crosscut to a haulage drive. The details of the crosscut and drive are shown below.
Crosscut - Bearing: 71°06''25”
Grade: 1:70
Last Survey Station: 5417.744 E
2448.954 N
1099.439 RL Floor

Haulage drive - Bearing: 312°33''10”
Grade: -1:100
Last Survey Station: 5594.088 E
2384.402 N
1152.447 RL Floor

The face of the crosscut is 80m ahead of the last station. Both the crosscut and haulage drive
are 5m wide and 4m high.
The tunnel is to have a circular horizontal alignment turning right from the crosscut with aradius of not more than 50m and not less that 30m with a maximum grade of 1 in 10.

a. Calculate the co-ordinates of the two tangent points for the most cost effective solution.
(40)

b. Plot the crosscut and drives at suitable scale showing all relevant information. Show the proposed walls as dashed lines on the plan. (10)

c. Calculate the co-ordinates of a point (Stn 425) that is 5m along the centreline of the tunnel from the TP in the crosscut (TP1). Check your calculations using the plan. (5)

d. From this point a chord line bearing 88°43’ is to be set out. At 2m intervals calculate the centreline offsets from this line and reduced levels of the floor. (40)

e. At what chainage from Stn 425 should mining cease and why? (5)

I''m wondering I got an assignment that due date tomorrow and it contains 5 questions and i solve all of them except the first one, so if able to solve it just let me know

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages

Mine Surveying.., Other Engineering

Related Discussions:- Mine Surveying..

Organic, What happened when melonic acid heated

Crystallographic notation, Q. W hat do you understand by crystallographic n...

Swell Factors, The effect of swell factors on volumes

Propeller control, Propeller Control: There is no separate propeller co...

ELECTRONICS, FLIP-FLOP

Unit cell, Q. What is a unit cell? Ans. UNIT CELL AND LATTICE CONST...

Power system analysis, I need a project in Load impact in power flow((const...

Fire risk assessment in uk - fire protection engineering, Fire risk assessm...

Relaibilty , can u help me with a reliabilty assignment

Matlab, load flow analysis by fast decoupled method

Write Your Message!

Featured Services

Online Tutoring

Project Development

Exam Preparation

Course Help

Assignment Help

Popular Subjects

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT