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

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 ...

Smart home patient monitoring system abstractthe increasing

Smart Home Patient Monitoring System Abstract The increasing number elder people and illnesses that require continuous monitoring, along with the demand on hospital rooms and shortage of medical support, home monitoring ...

Finite element analysis in engineering term assignmentfor

Finite Element Analysis in Engineering Term Assignment For the truss system above, do the following. Q1: (a) Solve for the x,y components of displacement of each joint using one bar element for each link. Show all work i ...

Assignment - audio connectivity and interface techniques

Assignment - Audio connectivity and interface techniques Tasks Background information This assignment allows learners to demonstrate their knowledge and practical ability in connecting together analogue and digital syste ...

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 ...

Lab ac modelsintroductionthe lab is based on the ac models

Lab: AC Models Introduction: The lab is based on the AC models of a transistors. After the transistor has been biased with a Q-point near the middle of the load line, we can couple a small AC voltage into the base. This ...

Stting up a xilinx project for the bcd clockobjective

Setting up a Xilinx project for the BCD Clock Objective: This document is intended to be used as a reference guide to aid in setting up and working with a Xilinx ISE WebPACK project for use with the BCD clock project. Pr ...

Homework consider a renewal process let x be the

Homework Consider a renewal process. Let X be the interrenewal times; and let I and R be the length of an interval interrupted at random and its remainder, respectively. The following BASIC simulation calculates the aver ...

1 summarise the steps in the development of an open pit

1. Summarise the steps in the development of an open pit mine. 2. Define or describe the following terms a. Bench height b. Working bench c. Crest d. Cut e. Toe f. Safety bench/catch bench g. Bench face angle h. Back bre ...

Design and build a counter that can display the sequence

Design and build a counter that can display the sequence assigned to you by the instructor (see table below). Use two J-K flip-flops for the two most significant bits and two D flip-flops for the two least significant bi ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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