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 Download (2MB) | Preview |
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 |
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | 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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