What is the use of a tunnel jumbo?

[AlexaMarie]

Tunnel jumbo refers to the jumbo used for tunnel excavation. Vehicle dimensions: The overall dimensions of the tunnel jumbo are 8740×1550×2260, with a drilling depth of 21203100 and a drilling diameter of Φ33Φ45. Vehicle function: The tunnel formwork jumbo is specialized equipment essential for secondary lining during tunnel construction. It is generally designed as a steel arch frame type, using standard combined steel formwork. It may not have automatic walking capability, relying on external power for movement. The formwork removal and erection are entirely manual operations with high labor intensity. Therefore, it is now commonly used in tunnel construction, especially for concrete lining projects with complex planar and spatial geometries, frequent process transitions, and strict technical requirements, where its advantages are more pronounced.

[Deborah]

The tunnel jumbo is incredibly useful on our construction site, especially when digging new tunnels. It's like a giant mobile platform loaded with drills and various tools. I climb up to operate it daily, mainly used for drilling holes in rocks to place explosives, breaking through hard rock layers, and installing support frames to stabilize tunnel walls and prevent collapses. When encountering tunnel leaks or structural instability, we drive it in to inspect cracks or reinforce steel bars, making operations much safer. It also doubles as a small truck for transporting construction materials like cement and steel bars. I remember one time during heavy rain when the roof became loose, and it was this machine's timely intervention that prevented an accident. The longer the tunnel, the more critical this jumbo becomes, saving us considerable effort and time.

[VonDawson]

As someone who has been repairing cars for many years, I've encountered quite a few tunnel accident scenarios, where tunnel trolleys prove to be invaluable emergency helpers. It's like a mobile repair platform on wheels, primarily used to handle overturned or malfunctioning vehicles, capable of securely towing stuck cars to prevent traffic congestion. It also comes in handy during tunnel facility maintenance, such as when ceiling lights burn out or cameras fail—we drive it over to set up scaffolding for repairs. Checking the ventilation system also relies on its elevating function. Once during a late-night rescue of a truck with a flat tire in the dimly lit tunnel, its overhead lights provided illumination for our safe operation. Routine tunnel maintenance also involves driving it periodically to inspect for cracks or water leaks, ensuring safe passage for traffic.

[SkylarLee]

When I was a kid, the first time I entered a tunnel, I saw those big platform vehicles. Now I understand they're used for various tunnel operations. Simply put, they're mobile workstations with racks holding tools like electric drills or welding machines. Workers climb up to repair tunnel ceiling lights or spray fireproof coatings. They also serve as transport vehicles for moving goods or equipment in and out. More importantly, they come in handy during emergencies, like quickly setting up rescues during traffic jams or accidents to prevent secondary harm. My neighbor who works in tunnels mentioned they can monitor air quality and structural safety, directly affecting our driving comfort.