slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
SLOPE & SHAFT SINKING TEAM PowerPoint Presentation
Download Presentation
SLOPE & SHAFT SINKING TEAM

Loading in 2 Seconds...

play fullscreen
1 / 21

SLOPE & SHAFT SINKING TEAM - PowerPoint PPT Presentation


  • 208 Views
  • Uploaded on

NOISE PROJECT. SLOPE & SHAFT SINKING TEAM . Shafts Conventional Drill, Blast, Muck or Clam-Shell Drill - Either Raise-Bore or Blind-Drill. Slopes Conventional Drill, Blast , Muck (Air or Diesel) Continuous Miner Cut. PROJECT TYPES.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'SLOPE & SHAFT SINKING TEAM' - chinue


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

NOISE PROJECT

SLOPE & SHAFT SINKING TEAM

project types
Shafts

Conventional Drill, Blast, Muck or Clam-Shell

Drill - Either Raise-Bore or Blind-Drill

Slopes

Conventional Drill, Blast , Muck (Air or Diesel)

Continuous Miner Cut

PROJECT TYPES

Several different types of shaft/slope sinking methods employed:

project considerations
PROJECT CONSIDERATIONS
  • Determine where objective noise levels could be evaluated
    • Very few current projects available
    • Short duration of most projects
    • Logistics for team members
    • Use of specialized equipment
  • Initial visit and evaluation of projects
  • Recommend changes or improvements
  • Follow up on recommendations
project site visits
PROJECT SITE VISITS
  • Sampled noise levels at different jobs
  • Determined noise exposures
  • Evaluated noise sources
  • Determined if any noise controls were being utilized
  • Determined their effectiveness
  • Determined if hearing protection used
problem areas
PROBLEM AREAS
  • In Slopes/Shafts where air-powered equipment is used
    • During drilling, mucking, air-cleaning operations
  • On surface area near stationary equipment
    • In vicinity of hoists, compressors and ventilation fan
  • Ambient or background noise in the shafts/slopes
results of mine visits
RESULTS OF MINE VISITS
  • Air-Powered Equipment Drilling 111 dBA to 124 dBA Mucking 98 dBA to 110 dBA Air cleaning 100 dBA to 110 dBA
  • Surface Installations Hoists 99 dBA to 103 dBA Compressors 84 dBA to 98 dBA Fans 85 dBA to 93 dBA
  • Ambient Noise in Shafts/Slopes Range 87 dBA to 94 dBA
slide7

Air-Powered Drills - BEFORE

-Heavy Cumbersome Designs

-No noise considerations

-111dBA to 124dBA

air powered drills now
Air-Powered Drills - NOW

- Jacketed Body

- Light-weight materials

- Improved Engineering Designs

- Improved noise level ranges

111-118 dBA

muckers
MUCKERS

Poor muffler systems 98DbA TO 110DbA

new mucker loader designs
New Mucker/Loader Designs

Diesel or Hydraulic Muckers

Backhoemodified

101 dBA

Alternate Loading Methods

Clam-Shell

83 dBA

drilling recommendations
Drilling - Recommendations
  • Always use mufflers to reduce internal hammer noise
  • Use smallest diameter drill steel needed
  • Collar holes before applying full air pressure
  • Regulate air pressure to manufacturer specifications
mucking recommendations
Mucking - Recommendations
  • Use equipment mufflers as provided by manufacturer
  • Reduce operating air pressure
  • Monitor and regulate air pressure
  • Keep equipment properly serviced and well lubricated
  • Explore alternative powered muckers (diesel, hydraulic) or methods of loading (Clam-shell)
surface installation recommendations
Surface Installation -Recommendations
  • Use prudent site planning to locate equipment away from work areas and entrances to slopes/shafts
  • Provide sound deadening enclosures
  • Provide noise barriers
  • Equip fans with inlet and exhaust silencers
ambient noise recommendations
Ambient Noise -Recommendations
  • Use prudent site planning to locate equipment away from openings
  • Use flexible connections to stop fan noise transmission
  • Use insulating hangers or anchors to install fan tubing
  • Explore different types of fan tubing, sound deadening tubing/fan blades
hoist installations before
Hoist Installations - Before

Noise levels ranged from 99 dBA to 103 dBA

new hoist installations
New Hoist Installations

Sound deadening in operators cab. Hoist noise < 70.3 dBA

fan installations improved
Fan Installations - Improved

New Fan Designs

Silencers and Isolation surround

83 - 85 dBA

compressor installations
Compressor Installations

Before:

93- 98 dBA

After:

92-95 dBA

Effective Isolation Barriers

improved compressor design
Improved Compressor Design

Manufacturer’s applied noise reduction technology

83 dBA

future plans
Future Plans
  • Continue to monitor shaft/slope sinking projects (both conventional and drilling types)
  • Measure effectiveness of new site layout plans
  • Pursue and encourage new equipment developments
  • Share findings/results with industry
future plans21
Future Plans
  • Visited shaft sinking site using backhoe adapted mucker design (Feb 7-8)
  • Test an improved low dBa air-powered drill (March 13-14)
  • Visit slope sinking project using diesel scoops for mucking operation (projected March)
  • Survey and Review Metal/Non Metal Shaft/Slope sinking sites for different methods/technologies (projected Feb-March)