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INITIAL SUPPORT SYSTEM BASE ON RMR OF TUNNEL DIVERSION IN WAY SEKAMPUNG REGENCY SOUTH LAMPUNG PROVINCE LAMPUNG
s rahman, h pramudito
university of trisakti
Abstract
Abstract In the tunnel construction process, good planning is needed regarding the support system that matches the rock class in the tunnel. One of the support systems is shotcrete. Shotcrete is a mortar that is sprayed with high strength towards a surface. However, to get the thickness of the required shotcrete, the rock class in the tunnel must be obtained. To find out this, an empirical method is needed that approaches the rock mass classification. Based on the analysis that has been done, there is 1 type of lithology that is traversed in the tunnel, namely metamorphic rock in the form of schist with RMR ranging from 39-50 and high debris load of 4.27-3.5 meters.
Keywords: tunnel, support system , RMR, high debris load
Topic: Geology
Link: https://ifory.id/abstract/c9qkdA4FvLng
Conference: The 2nd International Conference on Earth Science, Mineral, and Energy (ICEMINE 2019)
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