Soletanche

Societe Anonyme Dite - Soletanche

Jean-Paul Geffriaud

Herve Barthelemy

Yves Legendre

Michel Brochier

A device for injecting grout around a tubular pile driven into the ground. The tubular pile has a given diameter and is formed by a tubular wall of a given wall thickness defining the inside and outside of the tubular pile. A grout feed channel capable of being driven into the ground with the tubular pile is disposed inside the tubular wall having a diameter which is small relative to the diameter of the tubular pile. A check valve is connected to the grout feed channel at a position along the tubular wall and extends through the thickness of the tubular wall so as to communicate from the grout feed channel through the outside of the tubular wall. An injection device is inserted in the grout feed channel having one plug which is fitted in the grout feed channel and located above the check valve so as to inject grout under pressure through the injection device and the check valve to the outside of the tubular wall.

Device comprising a valve for injecting grout around or inside a tubular

A process for attaching an injection pipe with injection valve means to the inside wall of a tubular pile section comprising: drilling holes at a plurality of points along a generatrix of the pile section said holes passing through the wall of the pile; preparing an injection pipe having substantially the same length as the section of the pile to which it is to be attached; connecting said injection pipe with injection valve to said pipe, the spacings between said valve means corresponding to those of the said holes drilled in the wall of the pipe; engaging said injection pipe in the interior of the pile while positioning the injection valve means into said holes drilled in the pile; and welding said valve means to the wall of the pile from the exterior of the pile.

Process and device for the injection of a slurry in the vicinity of the

The invention relates to a process for the reinforcement of anchoring pilings used particularly in the oil-drilling industry, where a tubular steel piling (1) is driven into the ocean floor. Successive injections of a grout which can harden are made into the ground (7) which is contained inside the piling.

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Paris, France

Jean-Paul Geffriaud