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..

Aerodynamics, what is centrifugal twisting moment

Schmitt trigger, application of schmitt trigger

Construction, What are the problems arises during construction and their so...

Damping coefficint of canatrd of aircraft, what will be the methodology to ...

Siliconizing, 1.defination 2.explain the mechanisms of each process. 3. exp...

Foundry Mechanizaation, i need assignment on this topic

Line the crown of the tunnel, A 10m diameter circular tunnel is to be excav...

Tin smelting, How can calculate for charging of tin smelting with reverbera...

Avionic systems design- static stability derivatives, Static stability der...

Partial derivatives, #question.y = lny^2/x^2+Y^2

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