Forensic Engineering on causes of Tunnel Roof Cave-In Triggered by Simultaneous Blasting in Dam Project, West Java, Indonesia  

Oleh:

Makarim, C.A. ; Junaidy, D. ; Pratama, G. Andika

Jenis: Article from Proceeding
Dalam koleksi: Proceeding The 1st International Conference on Sustainable Civil Engineering Structures and Construction Materials (SCESCM) di Yogyakarta, September 11 – 13, 2012, page 77-81.
Topik: 2D / 3D Finite Element; Simultaneous Blasting; Diversion Tunnel; Crack
Fulltext: 9.pdf (1.01MB)

Isi artikel

Investigation conducted on cave-in of tunnel roof built on claystone and breccia soil in Dam Project - West Java, Indonesia strongly indicated that it was triggered by simultaneous blasting at the surface of the spillway. The roof collapse in the diversion tunnel is within 60 meters distance from the center of the blasting. The rock layer which made the roof of the diversion tunnel was Breccia Layer that has sheared zone (crack). This paper examine the effect of simultaneous blasting on tunnel roof in 2D/ 3D Finite Element modeling.

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