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GeoConSol
Geotechnical & Tunnel Consultants

A consultant is a universal observer who can look at a problem outside the environment in which the problem came to be, thereby creating a solution that was never possible before.  Fernando Flores

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16 September 2014
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EXPERT / FORENSIC SERVICES
DIFFERING SITE CONDITIONS
-->DSC Technical Principles
-->DSC Standards for Entitlement
-->DSC Independent Review
-->DSC Case Histories
-->Case History of a Bogus Expert
GEOTECHNICAL / CONSTRUCTION
-->Rock Testing/Boreability
-->Impact Hammer Feasibility
ARTICLES / PUBLICATIONS
TUNNELS / TUNNELING
-->Tunnel Boring
-->Excavation Improvement
-->Microtunneling/Pipe-Jacking
-->Selection of TBMs & MTBMs
-->Forensic Investigations
-->Safety
-->Detection of Covert Tunnels
CLIENTS
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Peter J. Tarkoy

 

Microtunneling Specifications

  • Microtunneling is defined as a trenchless construction method for installing pipelines.  The North American definition of microtunneling describes a method and does not impose size limitations on that method. The tunnel may be considered a microtunnel if all of the following features apply to construction: 

     

    -the microtunneling boring machine is remote controlled, 

    -a laser guidance system is employed, 

    -a jacking system is used for thrust, and 

    -continuous pressure is provided to the face of the excavation to balance groundwater and earth pressures. 

     

  • Standard Guidelines covering planning, design, pipe materials, and construction of microtunneling are most useful when applied to project and contract specific conditions.

  • This Standard Guideline is a vital reference for owners, engineers, contractors, and construction managers.  It should be tailored specifically to project (geological, material character, spatial constraints, and contractual) conditions by expert review. 

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