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The construction consists of the following:
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Depending on the site properties and material, the forepoling is either hammered in manually or automatically, by a machine, before the driving progress or removal of soil at the working face. The forepoling is inserted at intervals after, and closed to the outside with hardwood wedges against the supporting arches. In order to avoid settling, the remaining cavities in the soil, or missing portions in the forepoling, must be protected against soil … |
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(Image: Gallery technique (heading) with steel shuttering) (Image: Gallery technique (heading) with steel shuttering) |
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(Image: Gallery technique (heading) with wood shuttering and stable working face (S&P)) (Image: Gallery techniques (heading) with wood shuttering - wood shuttering wedged against support arches) (Image: Gallery techniques (heading) with wood shuttering) (Image: Gallery techniques (heading) with wood shuttering - wood shuttering wedged against support arches) (Image: Gallery techniques (heading) with wood shuttering - wood shuttering wedged against … |
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(Image: Gallery techniques (heading) by means of wood forepoling (cross-sectional drawing)) |
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Animation: Gallery technique - Wood shuttering [Image: S&P GmbH]. This interactive object is only visible in the online version of the module. |
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There are two available options for replacement with prefabricated pipes:
(Image: Possibilities of interior work … |
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(Image: Inspection) (Image: Leaktightness) The finishing work consists of the following tasks:
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May 27, 2019 This module focuses on the fundamentals of the trenchless replacement of gas, water, wastewater pipelines using the gallery techniques known from the mining industry. In addition, the individual steps of the gallery heading process with steel and timber support are described - from the preparatory measures to the final work. In addition, the areas of application and limitations of gallery heading, the measures for quality assurance as well as the advantages and disadvantages of this method are presented. After completing this module, you will have a sound knowledge of:
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