Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Other Engineering Expert

problem 1)

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. Compute the co-ordinates of the two tangent points for the most cost efficient solution.

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

c. Compute 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.

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

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

Other Engineering, Engineering

  • Category:- Other Engineering
  • Reference No.:- M91344

Have any Question? 


Related Questions in Other Engineering

1 estimate the cycle time and production of a caterpillar

1. Estimate the cycle time and production of a Caterpillar 777D flat floor off highway truck operating on a level haul road of 4000m length. The road is a rutted dirt roadway with no maintenance and no stabilisation, tyr ...

Project security enabled parallel connection for

Project: Security enabled parallel connection for intercom Project objectives The prime objective of the project is to describe how to generate many of the signals and used it to the concern field of communication system ...

Assignmentthe purpose of an antenna in a radio transmitter

Assignment The purpose of an antenna in a radio transmitter is to launch the radio waves into space. In a receiver, the idea is to pick up as much of the transmitter's power as possible and supply it to the tuner. The si ...

Assignment1 discuss symmetrical conditions in fourier

ASSIGNMENT 1. Discuss symmetrical conditions in Fourier series 2. Derive conversion formulae among different types of Fourier Series 3. State and prove any six properties of Fourier transform. 4. State and prove any four ...

Assignmentwhy program design is importantanswer the

Assignment Why Program Design is Important? Answer the following questions: 1. What is a program design? 2. Why program design is important? 3. What program design tools are available? Discuss in details by studying at l ...

Problem 1find the maximum likelihood ml test for a single

Problem 1. Find the Maximum Likelihood (ML) test for a single observation x(0) to distinguish between H 0 and H 1 if H 0 : P x (0)(x(0)) = 1/2exp (-|x(0)|) H 1 : P x (0)(x(0)) = 1/2exp (-|x(0) - A|) when A > 0. Find the ...

Diode circuits1 the 6v zener diode below has zero zener

Diode Circuits 1. The 6V zener diode below has zero Zener resistance and a knee current of 5mA.The minimum value of R, so that the voltage across it does not fall below 6V is 2. A zener diode in the circuit shown in belo ...

Electronics lab transistor biasing1given a bjt unloaded

Electronics Lab: Transistor Biasing 1. Given a BJT unloaded amplifier shown in figure 1 below with β=100. o Draw DC equivalent circuits of this unloaded amplifier. o Draw the DC load line of the circuit. o Determine the ...

Risk factors and gantt chartsquestion 1 project risk

Risk Factors and Gantt Charts Question 1: Project Risk factors • List the major risk factors for your project and the possible ways to mitigate this risks for your project. Question 2: Resource Evaluation • Produce and c ...

If you obtain advice from others or use information from

If you obtain advice from others, or use information from any source including the web, these must be acknowledged in your report. Two sample MATLAB codes are provided at the end of the assignment to help you with this a ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen