#2 What Is Tunnel Gantry & Various Tunnel Gantry

Tunnel Gantry

NPEC Tunnel Formworks or Tunnel Gantry is the most admired product of ours. We have fabricated various Tunnel Formworks till date starting from 3.3mtr dia to 20mtr diameter. Our range includes complete mechanical gantry, complete hydraulic gantry or a combination of mechanical and hydraulic formworks. The shape is as per the requirement of the project namely  Horse Shoe Gantry , Modified Horse Shoe Gantry, D type Gantry , Bellmouth gantry and also special gantries for various locations in the tunnel like Cavern Gantry, Pocket Gantry, T junction or Y junction Gantry  etc.

NPEC: Delivering Efficiency with Top-Tier Tunnel Lining Gantries

National Power Engineering Company (NPEC), a leading name in Siliguri’s construction industry, takes immense pride in offering innovative solutions to streamline your tunnelling projects. One of the most critical aspects of tunnel construction is the creation of a strong, smooth, and durable concrete lining. This lining acts as the backbone of the tunnel, ensuring its long-term stability and functionality. Here at NPEC, our expertise in tunnel lining gantries empowers you to achieve precisely that – efficient and high-quality tunnel construction.

Understanding Tunnel Lining Gantries

Imagine a giant, adaptable mould specifically designed for shaping concrete within a tunnel excavation. That’s essentially what a tunnel lining gantry, also known as tunnel formwork, is. These remarkable pieces of equipment play a pivotal role in the construction process. They provide the framework for the wet concrete, guiding it into the desired tunnel profile. NPEC’s tunnel lining gantries are renowned for their:

• Unmatched Durability: Constructed from high-grade steel, they can withstand the rigors of even the most demanding tunnel environments. The robust design ensures the gantry maintains its structural integrity throughout the pouring and curing process.
• Unwavering Versatility: NPEC understands that no two tunnels are identical. That’s why we offer a wide range of gantry options to accommodate various tunnel shapes and sizes. Whether you are working on a small utility tunnel or a large-scale infrastructure project, we have the right gantry to fit your needs.
• Streamlined Efficiency: NPEC’s tunnel lining gantries are designed with ease of use in mind. They can be assembled, disassembled, and moved quickly within the tunnel, minimizing downtime and maximizing productivity during construction.
• Precision Concrete Placement: The meticulous design and robust construction of our gantries ensure accurate concrete placement. This translates to a smooth and high-quality tunnel lining, reducing the need for extensive post-construction rectification work.

By incorporating NPEC’s tunnel lining gantries into your project, you are not just acquiring a piece of equipment; you are investing in efficiency, safety, and superior quality. In the next section, we will delve deeper into the diverse range of tunnel lining gantries offered by NPEC to cater to your specific project requirements.

The Powerhouse of Tunnelling: Unveiling Tunnel Lining Gantries with NPEC

Tunnelling projects are marvels of modern engineering, carving pathways through mountains and beneath cities. But the true strength of a tunnel lies not just in the excavation itself, but in the creation of a strong and smooth concrete lining. This crucial element ensures the tunnel’s long-term stability and functionality. Here at NPEC, we play a vital role in achieving this with our expertise in tunnel lining gantries.

Demystifying the Tunnel Lining Gantry:

Imagine a massive, adaptable mould specifically designed for a tunnel environment. This is the essence of a tunnel lining gantry, also known as tunnel formwork. These ingenious pieces of equipment act as the guiding force for the concrete within the tunnel excavation. Think of pouring wet concrete; the gantry acts as a framework, shaping the concrete into the desired tunnel profile. NPEC’s tunnel lining gantries are renowned for their:

• Unmatched Durability: Built to endure the harsh realities of tunnel construction, our gantries are crafted from high-grade steel. This robust design ensures they can withstand the immense pressure and weight of the concrete during the pouring and curing process.
• Tailored Versatility: NPEC recognizes that the world of tunnels is as diverse as its applications. Unlike a one-size-fits-all approach, we offer a comprehensive range of gantry options. These cater to a wide variety of tunnel shapes and sizes, from the relatively small utility tunnels to the expansive infrastructure projects that form the backbone of modern transportation networks. No matter the project’s scale, NPEC has the right gantry to fit your specific needs.
• Streamlined Efficiency: Time is money, especially in large-scale construction projects. That’s why NPEC’s tunnel lining gantries are designed with user-friendliness in mind. They boast features that facilitate quick assembly, disassembly, and movement within the tunnel. This minimizes downtime during construction, allowing you to maximize productivity and keep your project on schedule.
• Precision Poured, High-Quality Finish: The meticulous design and robust construction of our gantries go hand-in-hand to ensure accurate concrete placement. This translates to a smooth and high-quality tunnel lining. By minimizing concrete inconsistencies and imperfections, you reduce the need for extensive post-construction rectification work, saving both time and resources.

Incorporating NPEC’s tunnel lining gantries into your project goes beyond acquiring a piece of equipment. It’s an investment in efficiency, safety, and ultimately, the superior quality of your finished tunnel. In the following section, we’ll delve deeper into the diverse range of tunnel lining gantries offered by NPEC, ensuring you have the perfect solution for your specific tunnelling project.

Types of Tunnel Lining Gantries offered by NPEC

At NPEC, we understand that a one-size-fits-all approach doesn’t work in tunnel construction. That’s why we offer a diverse range of tunnel lining gantry options to cater to the specific requirements of your project. Here’s a detailed look at some of our most popular gantry types:

• Horse-Shoe Gantry: As the name suggests, this is the most widely used type of tunnel lining gantry. It’s specifically designed for creating the traditional horseshoe-shaped tunnel profile commonly encountered in transportation and utility applications. The robust design of the horse-shoe gantry ensures efficient and precise concrete placement, resulting in a structurally sound and smooth tunnel lining.
• Modified Horse-Shoe Gantry: This gantry builds upon the strengths of the standard horse-shoe design while offering additional flexibility.It allows for the incorporation of specific features directly into the formwork.For instance, recesses can be integrated into the gantry to accommodate ventilation ducts or cable trays during the concrete pouring stage.This eliminates the need for additional post-construction work, saving time and cost.
• D-Type Gantry: Not all tunnels are circular. For rectangular or square-shaped tunnels frequently used in stations, shafts, and basements, NPEC offers the D-Type gantry.This gantry system provides a stable and secure formwork solution for these non-circular geometries.Similar to the horse-shoe gantry, the D-Type gantry ensures accurate concrete placement, leading to a high-quality finished product.
• Bellmouth Gantry: Tunnels don’t just disappear underground; they eventually need to transition to the open air.This transition zone at the entrance and exit of a tunnel presents a unique challenge. NPEC’s bell mouth gantry is specifically designed to address this need. It facilitates the smooth tapering of the circular tunnel section towards the open excavation, ensuring a seamless and structurally sound transition for the entire tunnel structure.

Beyond these standard offerings, NPEC prides itself on its ability to design and manufacture special gantries for projects with unconventional requirements.This includes gantries for:

• Caverns: Large underground spaces often require extensive and complex formwork solutions. NPEC’s team of engineers can design gantries specifically suited for the unique geometries and dimensions of caverns.
• Pockets: Smaller excavations branching off from the main tunnel may necessitate specialized formwork. NPEC can create gantries that can be maneuvered and positioned effectively within these confined spaces.
• T-junctions and Y-junctions: Where tunnels intersect, creating a structurally sound connection is crucial. NPEC’s specially designed gantries for T-junctions and Y-junctions ensure precise concrete placement at these critical points, guaranteeing the integrity of the entire tunnel network.

Benefits of Using NPEC’s Tunnel Lining Gantries

Choosing NPEC’s tunnel lining gantries offers several advantages for your project:

• Improved Construction Speed: Our efficient design allows for faster deployment and movement of the gantry, leading to quicker completion of the concrete lining.
• Enhanced Safety: The robust construction and secure locking mechanisms ensure worker safety throughout the operation.
• Superior Quality Finish: The precise design and high-quality materials guarantee a smooth and consistent concrete finish, minimizing the need for post-construction rectification work.
• Reduced Labor Costs: The user-friendly design minimizes the manpower required for assembly, operation, and disassembly, lowering labour costs.
• Cost-Effectiveness: NPEC’s gantries are built for long-lasting use, reducing the need for frequent replacements and ensuring a high return on investment.

NPEC’s Commitment to Quality and Service

At NPEC, we understand the critical role tunnel lining gantries play in the success of your project. That’s why we are committed to providing:

• Top-notch Quality: We utilize high-grade steel and employ stringent quality control measures to ensure the durability and reliability of our gantries.
• Experienced Engineering Team: Our team of qualified engineers possesses extensive knowledge of tunnel construction and can design gantries that meet your project’s specific requirements.
• Exceptional Customer Service: We provide comprehensive support throughout the project lifecycle, from initial consultation to after-sales service.

NPEC is your one-stop solution for all your tunnel lining gantry needs in Siliguri and beyond. We offer a complete package, including:

• Design and Engineering: Our engineers will work closely with you to design a gantry that perfectly fits your tunnel profile and specifications.
• Fabrication: Utilizing advanced manufacturing techniques, we ensure the highest quality standards in the construction of your gantry.
• Delivery and Erection: NPEC will handle the safe and efficient delivery and assembly of the gantry on your project site.
• Operational Training: Our team will provide comprehensive training to your crew on the proper operation and maintenance of the gantry.

Some of the advantages of using NPEC tunnel formworks are

1. Light weight yet very robust.
2. Very fast delivery cycle.
3. Our technician installs the gantry and educates the client in its operation and maintenance.
4. Moc1. Self propelled hydraulic tunnel formwork
2. Horse shoe hydraulic/mechanical tunnel gantry
3. D type hydraulic/mechanical tunnel gantry
4. Cavern tunnel gantry
5. Modified horse shoe hydraulic tunnel gantry
6. Pocket tunnel gantry
7. T junction tunnel gantry
8. Y junction tunnel gantry
9. Bellmouth tunnel gantry
10 Mechanical tunnel formwork 11 Box Culvert Gantryk assembly is done at works and hence very fast installation at site.
5. After sales support is very prompt.
6. Best hydraulic components are used which guarantees trouble free operation for years.
7. Every system has a double lock and hence very safe.
8. In house Structural and Hydraulic design team.

The fact that our Tunnel Gantry is the most preferred choice for our customers, our customers demand for various accessories that is required in Tunnel Works. Till date we have fabricated thousands of tons of LATTICE GIRDERS and RIBS for various tunnel projects. The Ribs have been made from ISMB 150, ISMB 200, ISMB 250 and ISHB 200 sections. Apart from this we have manufactured various types of ROCK BOLTS and ANCHOR BOLTS and BEARING PLATES. At times tunnels require STEEL Ducting for air circulation. We have fabricated more than 50Km of Steel Ducting till date for various projects.