• Tunneling and Pipe Installation
    Tunneling and Pipe Installation

Tunneling and pipe installation for underground utilities involve the use of various mechanical equipment. Quality Powered Mechanical Equipment (QPME) such as excavator, generator and mobile crane which emitted relatively less noise compared with non- QPME are widely available in the territory. Moreover, the employment of some quieter construction methods such as top-down construction method or pipe jacking can also reduce the construction noise generation.

Sound pressure level at 7 meters from equipment

 

Noise reduction for some mitigation measures for reference.

Noise reduction

 
Liner is pulled into the host pipe

Cured-In-Place-Pipe (CIPP) Lining

 

Conventional pipe repairing and replacement may need to open the road surface. Cured-In-Place Pipe (CIPP) Lining is considered to be one of the quieter construction methods, compared to the traditional "open, cut and replace" method. Firstly, the deflated soft liner fabric material is pulled into the host pipe by a winch. Then, the liner is inflated by compressed air such that it can stay tight-fit with the host pipe. Finally, the liner is then cured by steam. Until the liner cools down, it hardens.