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Chapter: Civil - Construction Techniques Equipment Practices - construction equipment

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Selection of equipment for tunneling

Selection of equipment for tunneling depends upon quantum of work involved.

Tunneling equipment

 

Selection of equipment

 

Selection of equipment for tunneling depends upon quantum of work involved

 

So that the tunneling work is carried out economically,speedly and safely

 

Muck loading

 

Mucking is the operation of loading the broken rock or earth for removal from tunnel Mucking process can be done by the following equipments

 

Power shovels Tractor

 

loader Mucking

 

machines

 

Tunnel boring machines

 

Tunneling is mostly done by conventional and drilling and blasting methods

 

Working principle of tunneling these machines perform the bring operation through the rotation of the front head against the rock face

 

The mole has circular cutter head in the front provided with fixed cutters of desired shapes The cutter head while rotating is pressed against the rock to cut or pulverize it

 

The tunnel boring machines are two types

 

Single stage machine

 

These are recommended for small dia tunnels of 3 to 6 m

 

These machine are allowed to access change in bore hole diameter and this can be done without any change of machines

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