e-journal

Underwater Drilling and Blasting For Hard Rock Dredging In Indian Ports - A Case Study

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Underwater drilling and blasting used for rock dredging is associated with several unwanted effects having potential to cause damage to surrounding structures and environment. Though all these ill effects can’t be completely eliminated, using controlled blasting they can be minimized to acceptable levels. Underwater drilling and blasting was used for about 25,000 m3 of hard rock dredging during construction of a Second Liquid Chemical Berth by Mumbai Port Trust (MbPT), Mumbai. The rock formation at the site mainly consists of basalt with compressive strengths varying between 16.04 MPa and 37.96 MPa. The average depth of required excavation was about 2 m. The Elephanta Caves, a World Heritage Site is located about 2.6 km from the proposed site. It was apprehended that ground vibrations resulted from rock blasting may endanger the safety of Elephanta Caves as well as other structures located nearby. Controlled blasting was used to ensure safety of various structures and its efficacy was established by monitoring of blast vibrations on different structures during actual blasting. The use of small quantity of explosives confined in blast holes, non-electrical delay detonators and initiating each hole with a separate delay, helps in minimizing the ground vibration effects on surrounding structures and complete the rock dredging safely in time.

Keywords: Dredging; Controlled Blasting; Explosives;Ground Vibration; Safe Vibration Level; Shock Wave Pressure

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Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Aquatic Procedia

No. Panggil

-

Penerbit

: Elsevier., 2015

Deskripsi Fisik

Aquatic Procedia 4 ( 2015 ) 248 – 255

Bahasa

English

ISBN/ISSN

doi: 10.1016/j.aqpro

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

4 ( 2015 )

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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