Provided is a tunnel boring machine that can detect a wear condition of a disc cutter with a highly reliable configuration. The tunnel boring machine includes a measurement device. The measurement device is disposed behind the disc cutter mounted on a cutter head. The measurement device has a function as an acquisition unit that acquires cutting edge position data indicating a position of a cutting edge part of a cutter ring in the disc cutter. The tunnel boring machine further includes a DC discrimination unit that discriminates which one of a plurality of disc cutters is the disc cutter the cutting edge position data of which is acquired by the measurement device and a wear amount calculator that calculates a wear amount of the cutting edge part of the discriminated disc cutter.

A drilling and bursting heading machine, comprising a drilling and bursting device (1), an angle control device, a forward-backward telescopic device and a cantilever type heading machine (2), wherein the drilling and bursting device (1) is mounted on a forward-backward moving component of the forward-backward telescopic device by means of the angle control device, and the forward-backward telescopic device is mounted on the cantilever type heading machine (2); the drilling and bursting device (1) comprises a fixing support (1-20), as well as a rock drill component and a bursting component fixedly mounted on the fixing support (1-20) respectively; the angle control device comprises a mounting base (1-15), an auxiliary rotary hydraulic motor (1-14), an adjustment hydraulic cylinder (1-13) and a main rotary hydraulic motor (1-12); and when the forward-backward moving component of the forward-backward telescopic device completely extends out, the distance from a front end of the drilling and bursting device (1) to a working plane is shorter than the distance from a front end of a cutting head of the cantilever type heading machine (2) to the working plane. The drilling and bursting heading machine has a compact structure and is able to implement quick drilling and bursting on a hard rock stratum having a rock hardness f greater than 10 without increasing the energy consumption, so that the heading efficiency is improved and potential safety risks are reduced.

A tunnel boring machine includes: a disc cutter including a cutter ring; and a member for use in measurement of a wear amount of the cutter ring with a three-dimensional shape measurement device, in which the member is provided at a part constant in relative position to the cutter ring.

A method for monitoring and analyzing large tunnel machines based on automatic collection of big data includes the following steps: dividing a tunnel operation area, obtaining environmental information of a tunnel operation sub-area, analyzing rock drilling difficulty of the tunnel operation sub-area, confirming a tunnel operation trajectory, analyzing conformity of the tunnel operation sub-area, processing an abnormal tunnel operation sub-area, and analyzing health state of a tunnel rock drill. According to the present disclosure, a rock drilling difficulty coefficient of each tunnel operation sub-area is used to analyze a corresponding steel rotating speed, and then the tunnel operation trajectory is confirmed. After the tunnel operation is completed, the operation conformity of each tunnel operation sub-area is analyzed, and each abnormal tunnel operation sub-area is screened out and processed accordingly.

A hard rock tunnel boring machine combining microwave heating with high pressure water cutting for assisting in rock breaking includes a tunnel boring machine body, a microwave heating assisted rock breaking system and a high pressure water cutting assisted rock breaking system, wherein the microwave heating assisted rock breaking system is arranged on the tunnel boring machine body, and is used for heating and cracking a rock; and the high pressure water cutting assisted rock breaking system is arranged on the tunnel boring machine body, and is used for performing hydraulic cutting on the rock. A rock breaking sequence lies in that the microwave heating assisted rock breaking system is used for heating and cracking the rock, then the high pressure water cutting assisted rock breaking system is used for performing hydraulic cutting on the rock, and finally, the tunnel boring machine body is used for squeezing and breaking the rock.

A cutter disc for a tunnel boring machine includes a middle disc portion defining a radially outer surface or edge for engaging a surface, a left toothed portion defining a first set of teeth set back from the outer edge, and a right toothed portion defining a second set of teeth set back from the outer edge. In an embodiment, a central bore through the cutter disc is configured to attach the cutter disc to a hub for rotatably mounting the cutter disc on a shaft. In an embodiment, the hub is formed integrally with the cutter disc. The left and right toothed portions provide structural support to the middle portion and facilitate rotation of the cutter disc when boring in soft or mixed conditions, but do not interfere with boring in hard rock conditions.

A cutter head has a front surface formed with several transmitting ports, a protection plate mounted at an external-end hole of each port, several microwave generating mechanisms distributed in two manners: first, the generating mechanisms are uniformly arranged in the cutter head; second, the microwave generating mechanisms in the same number as hobbing cutters. Each generating mechanism includes a microwave source, a magnetron, a rectangular waveguide, a circulator and a microwave focus radiator, wherein the microwave source is connected with the magnetron, the magnetron is connected with one end of the waveguide, the other end of the waveguide is connected with a first port of the circulator, a second port of the circulator is connected with the microwave focus radiator, and a water load is connected to a third port of the circulator. The focus radiator includes a standard waveguide section, an impedance matching section and a compressed radiation section.

The invention relates to a cutter holder (1) for a tunnel boring machine, comprising: a housing (2) comprising two cavities (26) formed in opposite walls (20), and two clamping sets (3), configured to be removably mounted on either side of the roller cutter (10) in the housing (2), and each comprising: a base plate (32), and a center wedge (34), movably mounted on the base plate (32), two side wedges (36), hinged between the base plate (32) and the center wedge (34) between a retracted position and a clamping position, wherein the side wedges (36) transversely swing and enter into the cavity (26) facing the housing (2).

A device for advancing a cavity in underground mining, including a rotary drive, an axial shaft that is rotatable together with the rotary drive about a longitudinal axis, exactly one extraction drum that is rotatable about an drum rotational axis, and a connecting arrangement which is connected to the axial shaft and which supports the extraction drum, the connecting arrangement being configured in such a way that the drum rotational axis and the longitudinal axis lie in a plane, and are oriented at an acute angle with respect to one another in the advancing direction, in all operating positions during the advancement, characterized in that the extraction drum extends over at least an effective radius of the device in the radial direction of the device during advancement of the cavity.

An industrial machine including an actuator, a gear reducer, a cutter drum, a cutter bit, a sensor, and a controller. The gear reducer is configured to receive a first rotational energy from the actuator and output a second rotational energy. The cutter drum is supported by a chassis. The cutter drum is driven by the second rotational energy. The cutter bit is coupled to the cutter drum. The sensor is configured to sense a characteristic of the industrial machine. The controller, having a processor and memory, is configured to receive the characteristic of the industrial machine, determine a cutting efficiency based on the characteristic of the industrial machine, and output the cutting efficiency.