Open-type gripper TBM
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CRCHI open-type gripper TBMs are the best solutions for tunnelling in tough hard rock. They are used in the construction of water conservancy tunnels, hydro-power tunnels, rail tunnels, urban rail transit systems, and other projects where the tunnel is bored mainly through hard rock.
Working Principles of open-type gripper TBM
CRCHI open-type gripper TBMs are the best solutions for tunnelling in tough hard rock. They are used in the construction of water conservancy tunnels, hydro-power tunnels, rail tunnels, urban rail transit systems, and other projects where the tunnel is bored mainly through hard rock.
Basic structure of open-type gripper TBM
Features of CRCHI’s open-type gripper TBM
-When encountered with unstable soft rock or fracture zone, the machine uses its reliable advanced drilling system and grouting system for rock reinforcement. Advancing cannot be continued until the rock becomes stable.
-The cutterhead is highly wear resistant because it is made of Hardox plate or composite chromium-carbide wear-resistant plate and the edge of cutterhead is made of hard alloy block, ensuring long service time.
-The main drive uses double row cylindrical roller thrust bearing, ensuing long service lifetime and high safety.
-A reliable and high-efficient PLC control system allows real time monitoring and data collection.
-An innovative transport system for different materials ensures a safe and highly efficient transportation of segments, pea gravels, construction consumables,and other material in the tunnel.
-Each foam of which parameters can be continuously adjusted uses the structure of a tube and a pump, resulting in reliable performance.
-Its diameter ranges from 3m to 12m.
Partial references of CRCHI’s open-type gripper TBM
No. | Project name | Excavation diameter（mm） | Quantity |
1 | North Hubei water diversion project in China | 4,030 | 1 |
2 | Taizhou water diversion project in China | 4,030 | 1 |
3 | Beijiang water diversion project in China | 4,530 | 1 |
4 | Inner Mongolia water diversion project in China | 4,750 | 3 |
5 | EH water diversion project in China | 5,530 | 2 |
6 | San Gabán hydropower project in Peru | 5,830 | 1 |
7 | ABH Project in China | 6,530 | 2 |
8 | Shaanxi mining project in China | 6,530 | 1 |
9 | EH water diversion project in China | 7,030 | 11 |
10 | EH water diversion project in China | 7,830 | 1 |
11 | Central Jilin water diversion project in China | 7,930 | 1 |
12 | X Project in China | 8,830 | 1 |
13 | Beijing Yanqing utility tunnel project in China | 10,230 | 1 |
... | |||
Project pictures
CRCHI open-type gripper TBM with a diameter of 5,830mm for the construction of San Gabán hydropower station tunnel project in Peru
CRCHI open-type gripper TBM with a diameter of 7,930mm for the construction of water diversion tunnel project in central Jilin, China
The breakthrough of the water diversion tunnel project in central Jilin, China
CRCHI open-type gripper TBM with a diameter of 4,030mm for the construction of water allocation project in Northern Hubei, China
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