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An empirical assessment of selection excavation methods and support system in Budong-Budong Dam diversion tunnel, Central Mamuju, West Sulawesi Province

Auteur(s):


Médium: article de revue
Langue(s): anglais
Publié dans: IOP Conference Series: Earth and Environmental Science, , n. 1, v. 1249
Page(s): 012018
DOI: 10.1088/1755-1315/1249/1/012018
Abstrait:

Budong-Budong Dam is located on Salulebo River, West Sulawesi Province, and has a diversion tunnel to divert river flow so as not to interfere with construction at the main dam. This diversion tunnel has a D shape which is dimensions 5 m. The Method used in empirically assessing rock mass quality is Rock Mass Rating (RMR) and Japan Society of Civil Engineers (JSCE). The data used are RMR values and rock-type categories. The results show that the diversion tunnel is in lithology tuffaceous sandstone intercalation tuffaceous siltstone and tuffaceous breccias. Weathering degree from slightly-weathered to highly-weathered. The dominance RMR value is 27-53 and rock-category is CII with L massif rock type. The excavation method based on RMR is top-heading and bench and the excavation method based on JSCE is a full-face method with an auxiliary bench cut. Support systems proposed by RMR and JSCE are rock-bolts, shotcrete, and steel sets (steel support). Even though it has been done empirically, it needs to be considered for modeling to be effective and efficient.

Structurae ne peut pas vous offrir cette publication en texte intégral pour l'instant. Le texte intégral est accessible chez l'éditeur. DOI: 10.1088/1755-1315/1249/1/012018.
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  • Reference-ID
    10780251
  • Publié(e) le:
    12.05.2024
  • Modifié(e) le:
    12.05.2024
 
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