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Tunnel drilling machine

Inactive Publication Date: 2012-03-01
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a circular tunnel may not be convenient for constructing automotive or train passes as these passes usually require additional spaces on either side of the tunnel to allow for cabling, lighting, maintenance, etc.
Drilling multiple circular tunnels alongside each other may raise structural safety concerns and may also not be economically feasible.

Method used

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  • Tunnel drilling machine
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Embodiment Construction

[0010]Before describing in detail embodiments that are in accordance with the invention, it should be observed that the embodiments reside primarily in combinations of method steps and apparatus components related to a method and tunnel drilling machine for drilling an epitrochoidal tunnel. Accordingly, the apparatus components and method steps have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

[0011]In this document, relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The ter...

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PUM

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Abstract

A tunnel drilling machine and a method for drilling an epitrochoidal tunnel is disclosed. The tunnel drilling machine includes a tunneling machine body, a fixed gear operatively coupled to a frontal end of the tunneling machine body along a central axis of the tunneling machine body, and a drill head having a substantially triangular periphery. The drill head includes an internal gear ring, the internal gear ring being mounted on the fixed gear, wherein the fixed gear drives the internal gear ring around the fixed gear with a gear ratio of 3:1 to form an epitrochoidal tunnel.

Description

FIELD OF THE INVENTION[0001]The invention, in general, relates to tunnel drilling machines. More specifically, the invention relates to a tunnel drilling machine which drills an epitrochoidal tunnel.BACKGROUND OF THE INVENTION[0002]Tunnel drilling machines have long been used to drill underground tunnels through rocks and soil. Typically, tunnel drilling machines have a circular drilling face which drills a circular tunnel. These tunnels are used to lay automotive or train passes to provide means of public transport. However, a circular tunnel may not be convenient for constructing automotive or train passes as these passes usually require additional spaces on either side of the tunnel to allow for cabling, lighting, maintenance, etc. Also, when multiple automotive or train passes are laid alongside each other, a circular tunnel may have to be drilled for each of the multiple automotive or train passes. Drilling multiple circular tunnels alongside each other may raise structural saf...

Claims

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Application Information

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IPC IPC(8): E21D9/10E21D9/11E21D9/00
CPCE21D9/116
Inventor BA-ABBAD, MAZEN A.
Owner KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY