Underground Public Works & Infrastructure
Sub’roca offers innovative, tailor-made solutions for permanent and temporary ventilation, adapted to your underground or “top-down” construction projects, including station box construction and shaft construction.
Sub’roca addresses these challenges by developing turnkey ventilation solutions designed to deliver high levels of performance. Our solutions help reduce energy costs while enhancing safety.
Main Ventilation
Main fans for the primary ventilation circuit, designed and installed according to the ventilation requirements associated with the mining methods and the mine design.Our software enables us to analyze the impact of ventilation on interconnected ventilation networks and optimize the equipment to ensure both performance and energy savings.
Secondary / Auxiliary Ventilation
Secondary fans are used to deliver and control airflow to the working area.
Sub’roca designs its secondary fans around three key principles: robustness, mobility, and performance.
We work with you to define the required airflow rates and the most strategic duct diameters, ensuring reduced energy consumption.
Different Configurations, Different Requirements
We are able to design fans ranging from single-stage (1 stage) to multi-stage (up to 4 stages) configurations, adapted to the constraints and phasing of your project, based on the following characteristics:
Spiral Ducts
Flexible spiral ducts, commonly known as “Spiraducts”, are ducts designed to circulate a fluid, in this case air, which may contain pollutants, dust, or gases. They can be used for both air supply and extraction (under positive or negative pressure) and can be connected using various systems (belts, straps, zippers, etc.).
They are manufactured as standard from 550 g/m² PVC, but can be produced with PVC ranging from 300 to 1,000 g/m² upon request. They are supplied in sections of 5, 10, 15, or 20 metres.
Smooth Flexible Ducts
Smooth flexible ducts, commonly known as “Ventubes”, are ducts designed to circulate a fluid, in this case air, which may contain pollutants, dust, or gases. They are used for air supply and can be connected using various systems (belts, straps, zippers, etc.).
They are manufactured as standard from 550 g/m² PVC, but can be produced with PVC ranging from 300 to 1,000 g/m² upon request. They are supplied in sections of 5, 10, 15, or 20 metres.
They can also be manufactured in lengths of several tens or even hundreds of metres when using a duct cassette, particularly for tunnelling operations involving tunnel boring machines (TBMs).
Industries We Serve
Areas of Expertise
Sub’Roca works on all underground projects requiring expertise in safety and mining engineering. Our areas of expertise include underground mines and quarries (miner protection, network ventilation), public works and underground infrastructure (metro stations, shafts, railway tunnels), civil engineering tunnels (Grand Paris Express, railway connections, major international projects), and microtunneling and underground networks (electrical, water, and wastewater networks).
Underground Mines & Quarries
Tunnels
Public Works & Infrastructure
Microtunneling & Underground Networks
Duct Connection Types
Belt Connection
Zipper Connection
Strap Connection
Velcro Connection
Protect
Your Teams
Contact us to request your quote.