{"id":19116,"date":"2024-12-20T13:23:03","date_gmt":"2024-12-20T12:23:03","guid":{"rendered":"https:\/\/2025.mining-report.de\/english\/?p=19116"},"modified":"2024-12-20T13:23:03","modified_gmt":"2024-12-20T12:23:03","slug":"on-a-grand-scale-geothermal-energy-system-for-climate-friendly-district-in-frankfurt-2","status":"publish","type":"post","link":"https:\/\/mining-report.de\/english\/blog\/on-a-grand-scale-geothermal-energy-system-for-climate-friendly-district-in-frankfurt-2\/","title":{"rendered":"On a grand scale: Geothermal energy system for climate-friendly district in Frankfurt"},"content":{"rendered":"

By the time the climate-friendly neighborhood in Frankfurt\u2019s Hilgenfeld district is completed, the team from BAUER Resources GmbH, Schrobenhausen\/Germany, with its three drilling rigs will be long gone. It will be almost like they were never even there. \u201cAlmost\u201d being the key word. What will remain is an impressive geothermal probe system that was installed on behalf of regional energy supplier Mainova AG (Figure\u00a01). With seven distribution shafts, numerous pipelines and more than 50 m3<\/sup> of brine, the system is impressive not only because of its scope: This is an exceptional project in many regards.<\/p>\n

Over the course of eight months, the three drilling teams from Bauer Resources completed their work on seven geothermal fields for the installation of the geothermal probe system. More than 19,200 m were drilled and a total of 160 geothermal probes from GWE GmbH were installed up to a depth of 120 m. \u201cThe grouting work in later stages took a particularly long time, since considerable extra quantities were consumed in some areas. This required precise coordination between the different parties involved in the project,\u201d explains Site Manager Raphael Werner from BAUER Resources, adding: \u201cTo ensure optimal quality for the backfill material in the boreholes, we used a specially developed, magnetically marked and thermally improved slurry. After completing the drilling work, we inspected the seal with a magnetic probe to ensure that it was executed properly \u2013 this is how we achieve optimal groundwater protection.\u201d The excavation work for the pipe trenches began simultaneously with the drilling work. Then it was time for the most arduous task: The experienced team laid more than 10,000 m of pipeline. Finally, the connections were established and the trenches were backfilled with soil. To fulfil the strict quality requirements, all work steps were painstakingly documented, construction materials were carefully monitored and the lines were regularly subjected to pressure tests. \u201cThanks to precise execution, we were able to move forward rapidly with the project,\u201d continues the Site Manager.<\/p>\n

The project is unusual not only because of its magnitude and the effort involved, but also because of the particular soil. The surface level of the 17.7 ha site is covered with glacial loess loam. This is one of the most valuable soil types in the world. \u201cFor this reason, protecting the soil was a top priority. None of the construction vehicles were allowed to drive directly over the grounds. Instead, extra access roads were built and the soil was protected with wood chips and load distribution plates,\u201d explains Werner. The deeper stone strata also posed multiple challenges. On the one hand, the drilling equipment had to be adjusted frequently because of the varying soil strata. Furthermore, flushing losses occurred unexpectedly. \u201cNot an easy undertaking, but ultimately no problem for us. In some cases we flushed the boreholes differently, in some areas we adapted the casings,\u201d remarks experienced Operations Manager Marcel M\u00f6\u00dflang of BAUER Resources.<\/p>\n

Even after finishing the main work, there are some tasks left for Bauer Resources. Until 2029, the experts will take care of maintenance on the geothermal probe system including flushing, filling and fine-tuning. \u201cIn Frankfurt we are offering our full range of services, from design and execution to commissioning and even maintenance.\u201d During the next stage, an innovative climate-friendly district will be constructed on the 17.7 ha site, which will serve as a shining example far beyond Frankfurt and Hessen thanks to the sustainable energy concept for heat and power supply furnished by regional energy supplier Mainova AG. This district, constructed by state residential construction company ABG FRANKFURT HOLDING GmbH, will house a total of 54 apartment buildings, 860 residential units as well as commercial spaces. \u201cWe will remember this project for a long time, because a geothermal energy system of this magnitude is rare \u2013 this is one of the largest of its kind in all of Germany,\u201d says M\u00f6\u00dflang in summary.<\/p>\n

Further information:
\nBAUER Group
\nwww.bauer.de<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

By the time the climate-friendly neighborhood in Frankfurt\u2019s Hilgenfeld district is completed, the team from BAUER Resources GmbH, Schrobenhausen\/Germany, with its three drilling rigs will be long gone. 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