• 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

 
Steel-reinforced polyethylene strips

Spiral Wound Rehabilitation Technology

The Spiral Wound Rehabilitation Technology (SPRTMPE) is considered to be one of the quieter construction methods, compared to the traditional "open, cut and replace" method. Steel-reinforced polyethylene strips are spirally wound by using the winding machine. These strips are then joined together by fusion of polyethylene materials to form new pipes in the host pipe. This method eliminates the use of any air compressor and boiler. Besides, no friction noise is generated as the process of dragging the liner material into the host pipe is not required.