CONTEXT
A Tunnel Boring Machine (TBM) also known as a mole” is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They can bore through anything from hard rock to sand. Tunnel diameters can range from a metre (done with micro-TBMs) to almost 16 metres to date. Tunnels of less than a metre or so in diameter are typically done using trenchless construction methods or horizontal directional drilling rather than TBMs.
Tunnel boring machines are used as an alt ....etc

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jig boring machine
type: MP-5F
machine bed= 1000 ....etc

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INTRODUCTION
Tunnel Boring Machine (TBM) also known as ‘MOLE’.
It is used to excavate tunnels with a circular cross section.
It can bore through anything from hard rock to sand.
Different types of TBMs are used for different geotechnology.
Used as an alternative to drilling and blasting (D&B) methods and conventional 'hand mining' in soil
Limits the disturbance to the surrounding ground and produces a smooth tunnel wall.
Suitable to use in heavily urbanized areas.
TBMs is also a complete ....etc

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plzz can u put ppt of jig boring machine???
....etc

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hi , this is samurai007 and i would like to get a detailed presentation on the topic TUNNEL BORING MACHINE. I need to give a powerpoint presentation on a mechanical related topic and i think this topic fulfills my needs.
Please cover following topics-
1. working
2. applications fields (elaborate)
3. advantages and disadvantages
4. latest developments
5. comparison with old traditional methods. etc.

I am expecting a detailed presentation or an elaborate content (must include pictures)

THANKS......... ....etc

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Hello Everyone ,
How r u
We are the manufacture of the food processing machine in China which used to seperate the good quality with bad on rice ,beans ,seeds ,dry fruit &vegetable and industrial plastic area.
If you are interested in and any inquiry ,pls feel free to contact to me .
Thanks and regds
Michael ....etc

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send the detail for fabrication of automatic boring mechanism for foundries ....etc

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Prepared by :
Siti Aisyah Binti Ghazali


INTRODUCTION
• Boring : soft and uncemented ground which is normally close to the ground surface.
• Type : Auger boring, wash boring, rotary drilling and percussion drilling
• Focused on : rotary drilling.
• Theoretical : rotary action + force to grind soil or rock= hole. Drilling requires a combination of a number of element (Heinz, 1989).
CASE STUDY
• Proposed Petrona ....etc

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Hello Everyone ,
How r u
We are the manufacture of the food processing machine in China which used to seperate the good quality with bad on rice ,beans ,seeds ,dry fruit &vegetable and industrial plastic area.
If you are interested in and any inquiry ,pls feel free to contact to me .
Thanks and regds
Michael
....etc

[:=Read Full Message Here=:]

i am third year mechanical student and i need to work on jig boring machine so plz give it to me as early as possible ....etc

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