https://newsletter.en.creamermedia.com
blasting|Construction|Contractor|Explosives|Infrastructure|PROJECT|Sanitation|SECURITY|Service|Water|Infrastructure
blasting|Construction|Contractor|Explosives|Infrastructure|PROJECT|Sanitation|SECURITY|Service|Water|Infrastructure
blasting|construction|contractor|explosives|infrastructure|project|sanitation|security|service|water|infrastructure

First trial blasting at Clanwilliam dam construction site

26th October 2023

By: Natasha Odendaal

Creamer Media Senior Deputy Editor

     

Font size: - +

The first trial blasting has been undertaken at the Clanwilliam dam construction site in the Western Cape, as the Department of Water and Sanitation (DWS) works to raise the dam wall by 13 m.

The trial blasting kicks off hard rock excavations and formally activates the construction to raise the dam wall after years of unprecedented delays.

“The first blasting at left bank is a significant and noteworthy move, especially since the Clanwilliam project encountered many challenges associated with procuring service providers and materials, said DWS spokesperson Wisane Mavasa.

There were 116 holes drilled in preparation for the blasting activity, each hole had an average depth of four metres, with 920 kg of explosives used for the blasting exercise, which resulted in a total volume of hard rock excavations of 1 253 m3.

Prior to having a major blast, a trial blast had to be done first to determine parameters of future blasting activities in line with security of surrounding infrastructure, mainly the dam, and ensure that there was no damage to the dam, and the dam remained safe and intact.

“Prior to the execution of trial blasting, the blasting sub-contractor submitted blast designs to the engineer and approved professional person (APP) for approval. The APP, through consultation with a third-party blasting specialist, evaluated the designs and gave a go-ahead, looking at aspects such as no blasting is allowed within 100 m from the dam wall, unless it is controlled blasting,” Mavasa explained in a statement issued on Thursday.

“With the blasting exercise, the hard excavations have been triggered on the left bank and regular blasting activities can be scheduled almost monthly through the same process as articulated above. All excavations remaining on the right and left bank are hard excavations and blasting will take place as approved and scheduled.”

Blasting will continue until all hard excavations are completed on both banks, while other activities, such as stripping of overburden at the quarry area and widening of the N7, are underway.

Edited by Creamer Media Reporter

Comments

Showroom

Weir Minerals Africa and Middle East
Weir Minerals Africa and Middle East

Weir Minerals Europe, Middle East and Africa is a global supplier of excellent minerals solutions, including pumps, valves, hydrocyclones,...

VISIT SHOWROOM 
Yale Lifting Solutions
Yale Lifting Solutions

Yale Lifting Solutions is a leading supplier of lifting and material handling equipment in Southern Africa. Yale offers a wide range of quality...

VISIT SHOWROOM 

Latest Multimedia

sponsored by

Magazine video image
Magazine round up | 01 March 2024
1st March 2024

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION







sq:0.281 0.388s - 159pq - 2rq
Subscribe Now