I. Application Scenarios
The tunnel super-large longitudinal slope secondary lining trolley (generally referring to a dedicated trolley for tunnel secondary lining that adapts to longitudinal slopes of ≥12%, or even 35%) is a customized hydraulic integral lining device specially designed for steep slopes, inclined shafts, and long downhill/uphill tunnels. Built upon conventional secondary lining trolleys, it is enhanced with climbing, anti-slip, leveling, anti-overturning, and large-stroke adaptive capabilities, enabling safe traveling, positioning, and pouring on super-large longitudinal slopes (typically ≥12%).
- Typical scenarios:
- Long steep-grade highway/railway tunnels
- Mine inclined shafts, hydraulic flood discharge tunnels
- Steep-grade urban metro sections
- Extreme working conditions with slopes of 12%–35%.
II. Functional Advantages:
- Convenient and safe operation
Hydraulic linkage control is adopted, with step-by-step traveling, formwork opening and closing, and posture adjustment all mechanized, reducing labor intensity. The entire machine is equipped with multiple anti-slip, locking, and warning devices, making the entire super-large longitudinal slope construction process controllable and providing stronger safety assurance.
2. Strong adaptability to working conditions
Specially designed for tunnels with large longitudinal slopes and large height differences, it can adapt to complex alignments such as steep slopes and inclined shafts. The frame has high rigidity and a stable center of gravity, the formwork is hinged and self-adaptive, and the traveling traction is reliable, allowing normal construction under large-slope conditions where conventional trolleys cannot operate.
3. Excellent lining forming quality
The formwork has high overall rigidity and few joints. Combined with the non-offset top pouring + circumferential soft lap joint process, the lining surface is smooth, without offsets or obvious joints. The pouring is dense and exhaust is smooth, the construction joint waterproofing is reliable, and both appearance and internal quality are significantly improved.
4. More reasonable working environment
The working platform can be leveled according to the slope, always maintaining a horizontal state, making walking and operation safer and more comfortable for personnel. The layered working platform layout is reasonable, meeting the needs of multiple processes such as rebar installation, pouring, and formwork stripping.
5. Higher construction efficiency
Traveling and positioning are precise, the cycle speed is fast, and formwork erection and stripping are quick, reducing adjustment and waiting time. The overall machine has good stability and is not prone to formwork displacement or grout leakage, greatly reducing later repairs and shortening the overall construction period.
