Put Request

Tunnel shield “KRISTALL” with rotor actuator is designed for mechanized construction of tunnels with monolithic compressed interior finish of 1700 mm internal diameter in the mixed soils (including water-saturated ones) of 1-1 U category as per SNiP Sh-P-77 at the hydrostatic pressure up to 0.25 MPa and hydraulic transport of the worked out soil.

Tunnel shield “TOPAZ” with rotor actuator is designed for mechanized construction of tunnels with monolithic compressed interior finish of 3.36 m internal diameter in the mixed and water-saturated soils with the pressure up to 0.25 MPa and in rocks with strength up to 80 MPa having boulders up to 450 mm.

Technical characteristics

ParametersShield “Kristall”Shield “Topaz”
External diameter of shield, mm2040 2020
Number of jacks
shield jacks 8
control jacks6
jacks for forms drawing up6
Pressure in the hydraulic system, MPa
32
Actuator
type rotor rotor
torque, kN•m2401400
rotation frequency, min-11.51.82
Technical speed of tunnel construction, m/h
0.5
Rated voltage of power line, V
380
Frequency of power line, Hz
50
Total generating capacity (without pumps of water supply and draw off), kW
70
Output of devices for soil extraction from the stope, m3/h
100
Min. radius of tunnel curvature, m
100