Pengaruh Metoda Peggalian NATMTerhadap Kestabilan Terowongan Ganda Cisumdawu Di Kabupaten Sumedang Provinsi Jawa Barat

Saptono, Singgih and Titisariwati, Indun and Atmaja, Dika Pandu (2019) Pengaruh Metoda Peggalian NATMTerhadap Kestabilan Terowongan Ganda Cisumdawu Di Kabupaten Sumedang Provinsi Jawa Barat. Jurnal teknologi Pertambangan, 5 (1). pp. 51-64. ISSN 2442-4234

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S Saptono_Pengaruh Metoda Penggalian NATM Terhadap Kestabilan Terowongan Ganda Cisumdawu Di Kabupaten Sumedang Provinsi Jawa Barat.pdf

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Abstract

ABSTRAK

The development of Cisumdawu tunnel will disturb the in-situ stress and the in-situ stress is redistributed. In
addition, double tunnel excavation also influences the stress distribution and the total displacement. Therefore it
can be classified as unstable condition. The result at monitoring of Cisumdawu Tunnel with no support based on
total displacement is approximately 60 mm. Those cases that based on the strength factor are less than 1.3 which
is considered to be in an unstable condition. Then, the influence of in-situ stress condition can be considered cause
it causes the unstable condition. This research will be analyzing those conditions.
Keywords: Sequence, displacement, strength factor, in-situ stress, stability

ABSTRAK

Penggalian terowongan Cisumdawu membuat terjadinya redistribusi tegangan. Disamping itu, penggalian
terowongan ganda juga mempengaruhi distribusi tegangan dan nilai perpindahan. Berdasarkan data monitoring
terowongan Cisumdawu sebelum dipasang penyangga mengalami deformasi/perpindahan + 60 mm. Perpindahan
tersebut apabila berdasarkan nilai batas strength factor diperoleh nilai < 1,3 yang dianggap dalam kondisi tidak
stabil. Salah satu faktor yang dapat membuat terowongan menjadi tidak stabil adalah pengaruh dari perubahan
tegangan in-situ. Sehingga, perlu dilakukan analisis terhadap kejadian tersebut.
Kata Kunci : Tahapan, Tegangan in-situ, Perpindahan, Faktor Kekuatan, Kestabilan

Item Type: Article
Uncontrolled Keywords: Sequence, displacement, strength factor, in-situ stress, stability ahapan, Tegangan in-situ, Perpindahan, Faktor Kekuatan, Kestabilan
Subjek: T Technology > TN Mining engineering. Metallurgy
Divisions: x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: DR., MT SINGGIH SAPTONO
Date Deposited: 10 Aug 2021 08:09
Last Modified: 10 Aug 2021 08:09
URI: http://eprints.upnyk.ac.id/id/eprint/26519

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