Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On the application of Rock Mass Quality for blasting in large underground chambers
A large underground hydroelectric power project (6 x 250 MW) is under construction on the left bank of Satluj River in Himachal Pradesh by Nathpa Jhakri Power Corporation. As a part of this project, four large (525 m long, 16 m wide, 27 m high) underground desilting chambers are being excavated by drilling and blasting. This paper describes the sequence of excavation of the desiIting chambers, the geotechnicaL conditions, blast designs for central top heading, side slashings and horizontal benching. The performance of blast designs is evaluated in terms of pull, overbreak and powder factor and the results achieved arc presented. Based on the data generated, the applicability of Rock Mass Quality (Barton et al. 1974) for blasting at various stages of the excavation of the chambers is discussed.
On the application of Rock Mass Quality for blasting in large underground chambers
A large underground hydroelectric power project (6 x 250 MW) is under construction on the left bank of Satluj River in Himachal Pradesh by Nathpa Jhakri Power Corporation. As a part of this project, four large (525 m long, 16 m wide, 27 m high) underground desilting chambers are being excavated by drilling and blasting. This paper describes the sequence of excavation of the desiIting chambers, the geotechnicaL conditions, blast designs for central top heading, side slashings and horizontal benching. The performance of blast designs is evaluated in terms of pull, overbreak and powder factor and the results achieved arc presented. Based on the data generated, the applicability of Rock Mass Quality (Barton et al. 1974) for blasting at various stages of the excavation of the chambers is discussed.
On the application of Rock Mass Quality for blasting in large underground chambers
Adhikari, G.R. (Autor:in) / Babu, A.R. (Autor:in) / Balachander, R. (Autor:in) / Gupta, R.N. (Autor:in)
Tunnelling and Underground Space Technology ; 14 ; 367-375
1999
9 Seiten, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
On the Application of Rock Mass Quality for Blasting in Large Underground Chambers
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