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Glass Fiber Reinforced Polymer (GFRP) Permanent Rock-Bolts in Mined Caverns used for Underground Storage of Hydrocarbons Hofmann P.1, Neveu P.1 1Dextra Group, Thailand Online Published on 01 June, 2024. Abstract Mined caverns are becoming increasingly popular underground structures. They offer a unique solution to space constraints, especially in dense urban environments. In large excavations, and when permitted by the rock mass, permanent rock-bolts combined with sprayed concrete are logical alternatives to concrete lining. On the heels of the successful trial of the Jurong Rock Caverns in Singapore (2012-2014), several caverns are now being constructed using GFRP rock-bolts as rock-reinforcement. The performance characteristics of these rock-bolts, namely regarding tensile & shear resistance, durability in saline and alkali environments and environmental impact, have since been published in several studies. These GFRP permanent rock bolts are today used for the design of single shell lining mined structures. This paper specifically addresses caverns used for underground storage of hydrocarbons, through the experience of two projects in Middle East and South-East Asia. Top | |
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