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Trenchless Technologies

The division was created in 1997. It was devoted to the management and implementation of complex projects. It has been specialized in the trenchless technologies - building up of pipelines by means of direct drilling machines, ‘mole’ type.

The trenchless method is a highly-efficient one, and quite often the only highly-applicable one when passing under main urban roads, speedways and railways, as well as under rivers. This method is cost-effective due to its high performance, precision and short terms of commissioning for the constructed section. It is also related to minimum expenses as regards the restoration of pavements. The application of trenchless construction of product pipelines assists for achieving sustainable mobility. 

The trenchless technology has been agreed by the Ministry of Regional Development and Public Works. In terms of this technology Raicommerce Construction JSC is implementing most of its projects. The method is applicable to all kinds of underground communications (water pipelines, gas pipelines, underground power lines, etc.) 

For the last 5 years the trend has laid down over 150 km pipelines under the trenchless technology only.

All teams have proven long-term experience in horizontal drilling.

They continuously raise their qualification through education in the production base of TRACTO-TECHNIK, Germany.

 

Available technique for trenchless laying:

GRUNDODRILL 20 S

GRUNDODRILL 20 S:

Maximum diameter of horizontal drilling – 860 mm;

Maximum outside diameter of installed pipe – 720 mm;

Maximum length of horizontal drilling at once – 200 m;

Diameter of pilot drilling – 100 мм;

Types of pipes – PE, PP, cast iron, steel;

GRUNDODRILL 12 GX

GRUNDODRILL 12 GX

Maximum diameter of horizontal drilling – 550 mm;

Maximum outside diameter of installed pipe – 450 mm;

Maximum length of horizontal drilling at once – 350 m;

Diameter of pilot drilling – 80 мм;

Types of pipes – PE, PP, cast iron, steel;

GRUNDOPIT 40/ 60P (POWER)

GRUNDOPIT 40/ 60P (POWER)

Maximum diameter of horizontal drilling – 235 mm;

Maximum outside diameter of installed pipe – 200 mm;

Maximum length of horizontal drilling at once – 60 m;

Diameter of pilot drilling – 80 мм;

Types of pipes – PE, PP, cast iron, steel;

GRUNDODRILL 10 S

GRUNDODRILL 10 S

Maximum diameter of horizontal drilling – 435 mm;

Maximum outside diameter of installed pipe – 315 mm;

Maximum length of horizontal drilling at once – 200 m;

Diameter of pilot drilling – 80 мм;

Types of pipes – PE, PP, cast iron, steel;

GRUNDOMAT 45/55/65/75/110/130

GRUNDOMAT 45/55/65/75/110/130

Construction by method of hammer ejection - according БДС EN 12 889. 

Mass and effective method for laying pipelines, primarily for house connections.

Movement depends on the friction resistance of the soil layer.

Type of pipes - PE.

HammerHead Porta Burst PB30

HammerHead Porta Burst PB30:

Construction through destruction of existing pipe - according БДС EN 12889:2004 (Trenchless construction and testing of drains and sewers)

Presence of concrete manhole.

Maximum outer diameter of the new pipe - 200 mm;

Maximum length of lay - 30m.

Pipes - PE.

Hydraulic press for horizontal drilling

Hydraulic press for horizontal drilling:

Building by horizontal pressing of steel pipes - according БДС EN 12 889;

Maximum diameter of horizontal hole – 1830 mm;

Maximum outside diameter of pipe inside – 1750 mm;

Maximum length of horizontal drilling  – 35 mm;

Type of pipes - steel;

Pipe rehabilitation through on-site installation of spirally wound pipe - according БДС EN 13566-7

Pipe rehabilitation through on-site installation of spirally wound pipe - according БДС EN 13566-7:

Recovery of existing outworn sewage mains.

Made of continuous pipe with method of permanent cold chemical welding.

Profile preciseness guaranteed by EN 9100.

Competitive prices for diameters more than DN 500 mm. 

Effective rehabilitation method including all advantages of the PVC.

  

The benefits which the trenchless construction of pipelines and the rehabilitation technologies offer are:

  • Significant reduction of excavation, transportation and rehabilitation work;
  • High social effect;
  • The passengers’ accesses are not closed;
  • The urban traffic schedule is not impeded, and the traffic is not interrupted;
  • The hazard of the occurrence of incidents is strongly reduced;

The ecological balance within the region of construction is preserved.

Raicommerce Construction

129 Dr. Peter Dertliev Blvd.
1359 Sofia

Bulgaria

(+359) 02/ 925 14 44, 925 13 33, 0885/ 610 649

 

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