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| Điểm nổi bật: | construction equipment parts,heavy machinery spare parts |
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Description:
Dual Mode TBM
There are two types of dual mode TBMs. Type one: EPB – gripper/open TBM. This TBM not only has function of maintaining earth pressure balance on working face, but also possesses features of open hard rock cutter head which discharges mucks via belt conveyor machine. It adapts to complex geological conditions such as soft rock, hard rock and transitional mixed formations. When geological variation sare encountered, the boring modes and mucking manners can be changed for good adaptation; construction interferences and risks are therefore effectively minimized.
Type two: EPB – slurry TBM. The EPB mode will be put to work when encountering a tunnel face with poor stability or moisture-rich soft soil, soft rock, sandy gravel and mixed strata in order that excavated mucks could receive liquid ityand impermeability. When the cut face is rich in water or sandy gravels, the slurry pressure balance mode can be launched to bore. Inexpensive and economical, this equipment is able to meet construction needs flexibly.
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