Tunnel Boring Equipment

• Tunnel Boring Machine: Definition & Working Principle

  Aug 08, 2025

  A tunnel boring machine (TBM), also known as a mole or worm, is a specialized piece of tunnel boring equipment designed to excavate round tunnels through soil and rock. I rely on tunnel boring machines for tunnel projects because they feature a spinning cutterhead, a protective shield, and systems that ensure tunnel stability. These machines use hydraulic jacks, conveyor belts, and install tunnel lining as they advance, making the tunneling process safer and more efficient. According to civil engineering resources, the tunnel boring machine is essential for tunnel construction and can operate in various ground conditions. For challenging projects, I often choose a slurry balance tunnel boring machine or a double shield tunnel boring machine. NHI offers a...

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• How to Evaluate and Select the Right Tunnel Boring Machine for Your Project

  Sep 18, 2025

  Choosing the right tunnel boring machine is very important. It helps your tunnel project succeed. If you pick a TBM that matches your project, you can control ground settlement. This also helps keep the work on schedule. The table below shows how picking a TBM changes settlement in tunneling jobs. Project Count Total Jacking Distance (km) Maximum Recorded Settlement (mm) Settlement Benchmark (mm) 22 4.518 13.1 10 You need a step-by-step plan to match the TBM to your project’s ground and goals. Careful checking makes the work safer and more efficient. Key Takeaways Pick a TBM that fits the ground type. This helps keep your tunnel project safe and fast. - Think about your project’s size and goals before you pick a TBM. This helps you avoid problems and...

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• Where to Find TBM Tunnel Boring Machines for Sale: New vs. Refurbished Options

  Sep 23, 2025

  Looking for TBM Tunnel Boring Machines for your project? You can buy new or refurbished machines. Top manufacturers and special dealers sell them. You can also find them on online sites. The market is getting bigger. It was worth $6.7 billion in 2023. It may reach $9.4 billion by 2030. Metric Value Market size in 2023 USD 6,705.8 million Revenue forecast in 2030 USD 9,400.0 million CAGR (2023-2030) 4.9% Many contractors pick refurbished machines to save money. New machines can cost more than $50 million. You should choose the type that fits your project. Think about cost and the supplier’s reputation. Key Takeaways Think about how much money you can spend. New TBM Tunnel Boring Machines cost a lot. Some new machines cost more than $50 million. Refurbis...

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• Tunnel Boring Machine Costs You Should Know Right Now

  Sep 26, 2025

  Tunnel boring machine costs can be $5 million for small ones. The biggest machines can cost over $100 million. Most TBMs cost around $15 million each. Regular construction TBMs usually cost $500,000 to $3 million.Custom-built TBMs are made for special projects. These machines work better and may save money later. They often cost more at first. Knowing all the cost details helps you plan well and avoid problems.   Key Takeaways Tunnel boring machines (TBMs) can cost from $5 million to over $100 million. Knowing the price range helps you plan your budget well. Picking the right TBM size and type is very important. Smaller machines cost less. Bigger, custom machines may save money later. You can rent a TBM for short jobs. Renting lowers starting costs. It gives you more choic...

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