This method is used for renovation of existing pipelines with minimal displacement of soil.
1. By means of pneumatic pipe bursting, the old ceramic, asbestos cement or cast iron pipe is fragmented. The tunnel is formed by a special reamer and a new plastic pipe is pushed in.
Grundocrack
|
max length* (m) |
max depth* (m) |
max diameter (mm) |
| 100 |
unlimited |
350 |
2. By means of a hydraulic unit various type old pipes are fragmented. The tunnel is formed by a special reamer and a new plastic pipe is pushed in.
Grundoburst 800G
|
max length* (m) |
max depth* (m) |
max diameter (mm) |
| 300 |
unlimited |
450 |
3. A pipe of smaller diameter is driven into an old pipe and the space formed between the old and new pipe are filled with a special cement layer as required.
Winch „Bagela“
|
max length* (m) |
max depth* (m) |
max diameter (mm) |
| 300 |
unlimited |
450 |
* single locating of equipment
Technological features
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long distances (up to 300 m) |
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minimal distances (up to 40 m) |
|
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without displacement of soil |
|
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minimal digging of soil |
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complicated access sites |
|
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multiple underground utilities |
Site features
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underground |
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underneath water bodies |
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underneath roadways |
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underneath railroads |
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underneath above-ground structures |
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underneath planted sites |
Application areas
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communication networks |
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water-supply networks |
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wastewater networks |
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railways |
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motorways |
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electric power networks |
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pipeline renovation |
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land improvement |
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used |
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possible use (when required under special conditions) |
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not used |
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