Durvinil® sleeved grouting pipes can be used with geotextile TNT 450 obturator bags in order to achieve MPSP grouting in fractured rocks or non homogeneous soils.

A Multiple Pass Sleeve Port (MPSP) Pipe is manufactured for the underground transportation of grout, liquids, or other substances.

The MPSP is an injection technique with TAM pipes and Obturator. Sireg Geotech winner of the First prize in the”Construction & Infrastructures” category, together with Arkema, the University of Miami, and the National Cooperative Highway Research Program (NCHRP). At the JEC Innovation Award 2019 ceremony Sireg Geotech received first prize in the.

Obturator Bags re used to seal the annular space between the Durvinil® TAM pipe and the borehole. The barrel bags are used to perform correctly the MPSP (Multiple Packer Sleeved Pipe) technique and where the stability of the walls of the hole is compromised.

Multiple-packer, sleeve pipe (MPSP system without annulus grout) A tubes-à-manchette (TaM) equipped with fabric bags to separate the different grouting stages is placed down to the full depth of the hole. The fabric bags are inflated with cement grout to act as intermediate packers. Prone to collapse, the borehole is cased.

Installation and operation MPSP owes much to the principle of the tube à manchette sytem, in that grouting of the surrounding rock is effected through the ports of a plastic or steel grout tube placed in a predrilled hole. However, unlike tube à manchette, no sleeve or annulus grout is used.

1991年10月1日 · One of the decade’s few advances in the methodology of rock grouting is the multiple packer sleeved pipe system. MPSP overcomes the problems posed to efficient treatment in the face of collapsing, voided or highly variable ground conditions.

The recommended method of isolating the two zones is using multiple packer sleeved pipe system (MPSP) (Bruce and Gallavresi, 1988) with a barrier bag attached to the pipe. Examples of both MPSP and textile barrier bags are provided in Figure 2. …

1991年10月1日 · One of the few recent advances in the methodology of rock grouting is the multiple packer sleeved pipe (MPSP) system, which overcomes the problems posed to efficient treatment in the face of collapsing, voided of highly variable ground conditions.

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