Innovative Use of Mining Infrastructure: LNG Storage in Repurposed Shafts

This study explores the concept of an innovative underground storage facility for liquefied natural gas (LNG), utilizing repurposed post-mining shafts. The design incorporates segmental cryogenic tanks, enabling safe and efficient storage of LNG in a structurally optimized environment. This facility also serves as a potential regional transshipment hub, supporting gas distribution to southern Poland and neighbouring countries, while leveraging existing mining infrastructure.

Key technical aspects of the design include the adaptation of abandoned shafts, the installation of reinforced concrete foundations to support substantial loads, and the placement of cryogenic tanks within self-supporting steel frames. The study addresses technical challenges such as shaft geometry constraints, geomechanical stability, and thermal management for cryogenic conditions.

The storage system offers significant capacity over 2000m³, with a single shaft section accommodating LNG volumes equivalent to dozens of transport tankers. This concept demonstrates the technical and economic benefits of reusing mining infrastructure, including reduced construction costs and maximized spatial efficiency. Moreover, it aligns with the principles of sustainable development and supports the just transition of post-mining regions.