Can controlled blasting minimise vibration fears for PIL1 tunnel construction?

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Controlled Blasting Aims to Minimise Vibrations for PIL1 Tunnel Construction

Controlled chemical blasting methods employing new explosives are being utilised for the Pan Island Link 1 (PIL1) tunnel construction, designed to generate minimal vibrations. The project director, Szeto Wai Loong, confirmed that this technique involves casting the tunnel every 100 metres as blasting occurs, a process intended to significantly reduce ground vibration. Prior to commencing any tunnelling, all requisite approvals from relevant agencies and geotechnical experts will be secured to ensure stringent safety standards are met.
Blasting Technique and Vibration Control

The PIL1 project will employ a novel approach to tunnel excavation through controlled chemical blasting. This method is specifically chosen to mitigate concerns regarding vibrations, a common issue with large-scale tunnelling projects. By casting the tunnel structure every 100 metres immediately following each controlled blast, the process aims to contain and minimise the propagation of vibrations into the surrounding environment.
Safety Approvals and Expert Consultation

Szeto Wai Loong emphasised that the safety of the tunnelling operations is paramount. Before any blasting or excavation commences, the SRS Consortium will obtain all necessary approvals from a range of regulatory bodies. This process includes rigorous review and consultation with geotechnical experts to ensure that all safety requirements and protocols are adequately addressed and met, safeguarding both the construction process and the integrity of the surrounding terrain.
Project Alignment and Public Feedback

The Pan Island Link 1 (PIL1) alignment itself remains in a preliminary design stage, with the Penang Chief Minister Chow Kon Yeow indicating that ongoing feedback from the public and various groups is being considered for further enhancements. This iterative design process aims to reduce the overall impact of the proposed 19.5km highway, which includes tunnels and a cable-stayed bridge, on the community and environment. The Department of Environment has extended the public feedback period for the Environmental Impact Assessment report for PIL1 until September 7.

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Can controlled blasting minimise vibration fears for PIL1 tunnel construction?

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