HDD IN CHALLENGING ROCK CONDITIONS AND COMPENSATION GROUTING BY HDD

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Client: SERREMAR Srl – Italy

Year: 2006-2008

What I did: I made the detailed design of the installation of underground pipes, ranging from 100 mm (4″) to 500 mm (20″), by Horizontal Directional Drilling, in hard to very hard rock; HDD at sharp radius in rock and application of HDD to pre-tunneling compensation grouting and directional underground injections for insulation and treatment.

HDD IN CHALLENGING ROCK CONDITIONS AND COMPENSATION GROUTING BY HDD
Aulla (Italy) - a rocky hill to be crossed
Aulla (Italy) - the job site at the start point - the rig
Aulla (Italy) - the start point - drilling through abrasive sandstone.
Marina del Cantone (Italy) - tracking diagram of the pilot bore.
Marina del Cantone (Italy) - the job site at the start point.
Marina del Cantone (Italy) - Guiding the drilling head.
Marina del Cantone (Italy) - A conventional rig equipped with a directional down-the-hole assembly.
Marina del Cantone (Italy) - a rock reamer ready to be inserted into the pilot bore.
Arenzano (Italy) - drilling path (longitudinal section).
Arenzano (Italy) - plan view of the installation.
Arenzano (Italy) - the reamed borehole, ready for the pullback of the product pipe.
Prissiano (Italy) - the job site at the start point.
Prissiano (Italy) - the DTH directional water powered hammer.
Prissiano (Italy) - a rock reamer ready to ream the pilot bore.
Prissiano (Italy) - The assembled pipe ready to be pulled back into the reamed borehole.
Sevilla (Spain) - feasibility study of the use of HDD for a pre-tunneling compensation grouting
Sevilla (Spain) - feasibility study of the use of HDD for a pre-tunneling compensation grouting
Sevilla (Spain) - feasibility study of the use of HDD for a pre-tunneling compensation grouting
Bologna (Italy) - Design of the compensation grouting by HDD, before the passage of two TBMs (High Speed Train)

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