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Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern

The Surge Chamber Cavern (SCC) as part of underground power station in Hulu Terengganu Hydro Electric Project (HEP) is provided to protect the tailrace tunnel from water hammer effect due to fluctuation of water. The SCC is located is located downstream of the powerhouse and discharges in to a si...

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Main Author: Mochamad, Trisugiwo
Format: Thesis
Language:English
Published: 2017
Subjects:
T Technology
TA1-2040 Engineering (General). Civil engineering (General)
Online Access:http://eprints.usm.my/45748/1/Geomechanical%20Influence%20On%20Rock%20Mass%20Deformation%20At%20Hulu%20Terengganu%20Hydroelectric%20Power%20Surge%20Chamber%20Cavern.pdf
http://eprints.usm.my/45748/
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spelling my.usm.eprints.45748 http://eprints.usm.my/45748/ Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern Mochamad, Trisugiwo T Technology TA1-2040 Engineering (General). Civil engineering (General) The Surge Chamber Cavern (SCC) as part of underground power station in Hulu Terengganu Hydro Electric Project (HEP) is provided to protect the tailrace tunnel from water hammer effect due to fluctuation of water. The SCC is located is located downstream of the powerhouse and discharges in to a single inclined long tailrace tunnel under pressure. The SCC has D shape with dimension of 14 m span, 46 m high, 65 m length and constructed 200 m under surface. The problem statements are the SCC was excavated in jointed volcanic rock formation, homogeneous isotropic, and has stressed; presence of “buckling” at middle section of long walls; some geological overbreaks and the cavern has constructed without concrete support (unlined).The objective this study are characterised of rock, mechanical properties, insitustress condition of rock mass; analyse the effect of rock mass properties due to the deformation and to compare between the numerical analysis and monitoring data due to deformation of SCC. The data collected on site were used to analysis Dip, Unwedge and Phase2 software for numerical analysis and analysing of displacement monitoring.From this study, it was concluded that rock mass of SCC classified as a good rock however it was deformed, it was visualized on site as buckling, some overbreak/collapse and creep, the maximum displacement 26.45 mm on the middle of long-wall. The peak displacement had been happened during excavation period and observing shows the displacement is still continuing as creep, ≤0.05 mm/ month. 2017-04 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/45748/1/Geomechanical%20Influence%20On%20Rock%20Mass%20Deformation%20At%20Hulu%20Terengganu%20Hydroelectric%20Power%20Surge%20Chamber%20Cavern.pdf Mochamad, Trisugiwo (2017) Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern. Masters thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TA1-2040 Engineering (General). Civil engineering (General)
spellingShingle T Technology
TA1-2040 Engineering (General). Civil engineering (General)
Mochamad, Trisugiwo
Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern
description The Surge Chamber Cavern (SCC) as part of underground power station in Hulu Terengganu Hydro Electric Project (HEP) is provided to protect the tailrace tunnel from water hammer effect due to fluctuation of water. The SCC is located is located downstream of the powerhouse and discharges in to a single inclined long tailrace tunnel under pressure. The SCC has D shape with dimension of 14 m span, 46 m high, 65 m length and constructed 200 m under surface. The problem statements are the SCC was excavated in jointed volcanic rock formation, homogeneous isotropic, and has stressed; presence of “buckling” at middle section of long walls; some geological overbreaks and the cavern has constructed without concrete support (unlined).The objective this study are characterised of rock, mechanical properties, insitustress condition of rock mass; analyse the effect of rock mass properties due to the deformation and to compare between the numerical analysis and monitoring data due to deformation of SCC. The data collected on site were used to analysis Dip, Unwedge and Phase2 software for numerical analysis and analysing of displacement monitoring.From this study, it was concluded that rock mass of SCC classified as a good rock however it was deformed, it was visualized on site as buckling, some overbreak/collapse and creep, the maximum displacement 26.45 mm on the middle of long-wall. The peak displacement had been happened during excavation period and observing shows the displacement is still continuing as creep, ≤0.05 mm/ month.
format Thesis
author Mochamad, Trisugiwo
author_facet Mochamad, Trisugiwo
author_sort Mochamad, Trisugiwo
title Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern
title_short Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern
title_full Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern
title_fullStr Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern
title_full_unstemmed Geomechanical Influence On Rock Mass Deformation At Hulu Terengganu Hydroelectric Power Surge Chamber Cavern
title_sort geomechanical influence on rock mass deformation at hulu terengganu hydroelectric power surge chamber cavern
publishDate 2017
url http://eprints.usm.my/45748/1/Geomechanical%20Influence%20On%20Rock%20Mass%20Deformation%20At%20Hulu%20Terengganu%20Hydroelectric%20Power%20Surge%20Chamber%20Cavern.pdf
http://eprints.usm.my/45748/
_version_ 1717094449440358400
score 13.211869

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