ARMY METHOD OF TUNNELING - KPSTRUCTURES.IN

ARMY METHOD OF TUNNELING

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In This Article We Covers Army Method Of Tunneling In Soft Ground.

FACTOR AFFECTING THE CHOICE OF A METHOD

  • SIZE OF TUNNEL
  • TYPE OF GROUND
  • AVAILABLE EQUIPMENT
  • METHOD OF SEQUENCE OF EXCAVATION

ARMY METHOD OR CASE METHOD

Army Method Devised By US Army For Construction Of Small Tunnel At Fairly Shallow Depth.

This Method Mainly Used For Laying Underground Sewers.

Army Method Simple And Economical As Only Few Planks And Jacks Required, Also Done With Unskilled Labour Without Any Difficulty.

SEQUENCE OF OPERATION

To Advance The Work Top Breast Board Removed And Ground Excavated For A Distance Of 200mm To 300mm Ahead, The Brace Board Reset In The New Face And Braced Back.

The Next Cap Board Set And Held In Position By A Crutch Or Trench Jack.

The Braced Boards Removed 1 At A Time, And Reset In A Line Below The Top Breast Board After Removing Earth Behind Each Breast Board, Thus Forming A New Advanced Face.

The Sill Boards Now Advanced After Checking The Grade Level.

The Side Posts Now Fixed Between The Sill Board And Top Cap Correctly.

Army Method Of Tunneling

ADVANTAGES OF ARMY METHOD OF TUNNELING

  • Army Method Is Simple And economical Method.
  • Unskilled Labour Can Driven.

DISADVANTAGES OF ARMY METHOD OF TUNNELING

  • Army Method Uses Only For Short Tunnel.

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American Method Of Tunneling
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Classification Of Tunnels

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