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Author ORCID Identifier

Piotr Kalisz: 0000-0003-1749-2577

Magdalena Zięba: 0000-0002-7294-9210

Marcin Grygierek: 0000-0002-2969-7054

Abstract

The article concerns the impact of multiple mining subsidence on pipeline expansion capacity based on the analysis of the field research results. The article presents a case study related to a water mains system that supplies drinking water to approximately 3.5 million consumers. These pipelines are made of steel with diameters of 1600 mm and 1400 mm. The water mains partly run through mining and post-mining areas in the Upper Silesian Coal Basin in Poland. These pipelines are equipped with expansion joints to protect them against the impact of ground deformations. The field research concerned the assessment of the position of pipes ends in the expansion joints using ground-penetrating radar and ultrasonic flow detector. The assessment of the expansion capacity of the water mains was necessary to determine the resistance of the pipelines to further mining impact. The analysis of the results of the field research showed that permanent displacements of pipes ends in the expansion joints occur under mining impact. This may lead to failures that reduce the resistance of the pipelines to further mining ground deformations.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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