The tunnel boring machine includes a data processing unit configured to obtain error data (E.sub.r) based on a current measurement value (Vp) of the strain sensor obtained at a current angle () of the cutter head and a past corresponding measurement value (Vo) obtained at a corresponding angle corresponding to the current angle, to correct the current measurement data using the error data.

The tunnel boring machine includes a data processing unit configured to obtain error data (E.sub.r) based on a current measurement value (Vp) of the strain sensor obtained at a current angle () of the cutter head and a past corresponding measurement value (Vo) obtained at a corresponding angle corresponding to the current angle, to correct the current measurement data using the error data.

A roller cutter arrangement for a cutting wheel of a tunnel boring machine, including an interchangeable cup, a bearing block which is supported in the interchangeable cup in such a way that it is displaceable along a displacement axis, and a cutting roller unit having at least one cutting roller, which is rotatably supported in the bearing block and which acts along a working axis. The working axis is angled with respect to the displacement axis, so that cutting rollers of the cutting roller units may be situated in close proximity to one another, in particular in the central area of the cutting wheel.

A shield cutterhead for cutting a diaphragm wall with steel I-beam comprises a cutterhead body, a plurality of main cutter beams, an auxiliary cutter beam, a central double-disc roller cutter, and a tool group. The central double-disc roller cutter is arranged at a center of a working face of the cutterhead body and connected to the plurality of main cutter beams. The plurality of main cutter beams are arranged radially along the cutterhead body. The auxiliary cutter beam is arranged between adjacent main cutter beams. The tool group is mounted on the plurality of main cutter beams and the auxiliary cutter beam. Each of the central double-disc roller cutter, the plurality of main cutter beams, and the auxiliary cutter beam are arranged in six different tiers from a center to an edge of the cutterhead body based on heights of the central double-disc roller cutter and the tool group.

A shield cutterhead for cutting a diaphragm wall with steel I-beam comprises a cutterhead body, a plurality of main cutter beams, an auxiliary cutter beam, a central double-disc roller cutter, and a tool group. The central double-disc roller cutter is arranged at a center of a working face of the cutterhead body and connected to the plurality of main cutter beams. The plurality of main cutter beams are arranged radially along the cutterhead body. The auxiliary cutter beam is arranged between adjacent main cutter beams. The tool group is mounted on the plurality of main cutter beams and the auxiliary cutter beam. Each of the central double-disc roller cutter, the plurality of main cutter beams, and the auxiliary cutter beam are arranged in six different tiers from a center to an edge of the cutterhead body based on heights of the central double-disc roller cutter and the tool group.

In a tunnel boring machine designed for changing excavation tools (106) with sliding tubes (209), anchoring of load measuring elements (242) in load measuring element receptacles (236) extending in the axial direction, which are inserted in the sliding tubes (209), is provided. These load measuring elements (242) are located directly in the flux of forces introduced into the sliding tubes (209) by the excavation tools (106) and remain in place during a change of excavation tools (106) after an initial installation and subsequent calibration. This allows the loads acting on the excavation tools (106) to be detected in a less complex and long-term stable manner.

In a cutting wheel (103) for a tunnel boring machine, a tool condition monitoring device is provided to monitor the condition of at least one mining tool (112, 115, 118) during removal of a geological structure present, during tunneling, at the cutting wheel (103) in a tunneling direction. At least one support part (121, 124, 127) is installed separately and at a distance from the or a relevant mining tool (112, 115, 118). In the relevant support part (121, 124, 127), a current conductor element is embedded, which is interrupted in terms of its ability to carry current after a wear limit which is characteristic of the condition of the relevant mining tool (112, 115, 118) has been reached. In this way, the condition of mining tools (112, 115, 118) can be reliably determined during a relatively simple maintenance operation or retrofitting with a support part (121, 124, 127).

In a cutting wheel (103) for a tunnel boring machine, a tool condition monitoring device is provided to monitor the condition of at least one mining tool (112, 115, 118) during removal of a geological structure present, during tunneling, at the cutting wheel (103) in a tunneling direction. At least one support part (121, 124, 127) is installed separately and at a distance from the or a relevant mining tool (112, 115, 118). In the relevant support part (121, 124, 127), a current conductor element is embedded, which is interrupted in terms of its ability to carry current after a wear limit which is characteristic of the condition of the relevant mining tool (112, 115, 118) has been reached. In this way, the condition of mining tools (112, 115, 118) can be reliably determined during a relatively simple maintenance operation or retrofitting with a support part (121, 124, 127).

The present disclosure relates to a steering controller of a shield tunnel boring machine (TBM) and a steering control method using the same. To this end, the steering controller of the shield TBM individually controls operating lengths of articulation jacks, which are provided between a front shield having a cutter head and a middle shield and are radially spaced at equal intervals along a pre-designed excavation path. The method comprises: extracting reference point coordinates of the cutter head at a current point and reference point coordinates of the cutter head at a target point according to one cycle operation of shield jacks; calculating the operating lengths of each articulation jack as continuous real number values based on the reference point coordinates at the current point and the reference point coordinates at the target point; and simultaneously operating each articulation jack according to the calculated operating lengths.

The present disclosure relates to a steering controller of a shield tunnel boring machine (TBM) and a steering control method using the same. To this end, the steering controller of the shield TBM individually controls operating lengths of articulation jacks, which are provided between a front shield having a cutter head and a middle shield and are radially spaced at equal intervals along a pre-designed excavation path. The method comprises: extracting reference point coordinates of the cutter head at a current point and reference point coordinates of the cutter head at a target point according to one cycle operation of shield jacks; calculating the operating lengths of each articulation jack as continuous real number values based on the reference point coordinates at the current point and the reference point coordinates at the target point; and simultaneously operating each articulation jack according to the calculated operating lengths.