Abstract: A fan includes a first blower and a second blower each having an impeller. The first blower includes a first motor and a first motor drive controller to control driving of the first motor and communicate with the second blower. The second blower includes a second motor and a second motor drive controller to control driving of the second motor and communicate with the first blower. The first motor drive controller controls the driving of the first motor based on a result of communication with the second blower.

Abstract: There is provided a pit initiation evaluation system or the like capable of predicting pit initiation effectively and at low cost. In a pit initiation evaluation system of an embodiment, a pit initiation evaluation unit creates and retains, based on a dry-wet alternate time data, a deposit impurity concentration data, and a pit initiation data on pitting corrosion initiated in each of a plurality of turbine stages when an operation is actually performed in the steam turbine, a pit initiation evaluation table presenting a relationship between a dry-wet alternate time, a deposit impurity concentration, and pit initiation. Further, the pit initiation evaluation unit is configured to evaluate, by using the pit initiation evaluation table, pitting corrosion to be initiated in each of the plurality of turbine stages in an operation planned for the steam turbine.

Abstract: A mining system includes: a first tunnel that reaches a dump site and includes a first road surface; a second tunnel that crosses the first tunnel, reaches a mining site, and includes a second road surface positioned above the first road surface; a frame that includes a lower surface provided above the first road surface of the first tunnel and forming a transport passage between the first road surface and the lower surface and an upper surface forming a work road surface, on which a loading machine operates, together with the second road surface; and a moving vehicle that is capable of traveling on the first road surface and is capable of passing through the transport passage.

Abstract: A measurement system 50 measures a grade of an excavated material generated from an underground tunnel including a plurality of mining points. The underground tunnel is constructed based on a mining plan of a mine planned based on primary grade data and primary position data corresponding to the primary grade data measured in a preliminary geological survey. The measurement system includes a measuring unit (grade measuring unit) 61 that measures the grade of the excavated material generated from the underground tunnel, a secondary grade data acquisition unit (grade data acquisition unit) 72 that acquires secondary grade data indicating the grade of the excavated material from the measuring unit 61, and a secondary position data acquisition unit (position data acquisition unit) 73 that acquires secondary position data corresponding to the secondary grade data.

Abstract: 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.

Abstract: A mined material transport vehicle includes: a vehicle main body capable of moving forward and rearward; and a loading platform provided on the vehicle main body, wherein the loading platform includes: a conveyor provided on the vehicle main body and having a conveying surface capable of conveying a mined material in a conveying direction extending in a forward-rearward directions; a pair of movable flaps that extend in the conveying direction on both sides in a vehicle width direction of the conveying surface, form a storage space together with the conveying surface, and are rotatable about lateral axial lines extending in the conveying direction; and lateral cylinders for rotating the movable flaps about the lateral axial lines.

Abstract: A mining system includes: a first tunnel that reaches a dump site and includes a first road surface; a second tunnel that crosses the first tunnel, reaches a mining site, and includes a second road surface positioned above the first road surface; a frame that includes a lower surface provided above the first road surface of the first tunnel and forming a transport passage between the first road surface and the lower surface and an upper surface forming a work road surface, on which a loading machine operates, together with the second road surface; and a moving vehicle that is capable of traveling on the first road surface and is capable of passing through the transport passage.

Abstract: 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.

Abstract: A combined cycle power plant feedwater system includes: a feed pump which supplies feedwater to a heat recovery steam generator; a first pipe which extracts part of the feedwater from a flow path in mid-course of pressurization of the feed pump; a first boiler supplied with the feedwater led into the first pipe and subjected to first water treatment; a second pipe where the feedwater discharged from a feed pump outlet flows; a second boiler supplied with the feedwater led into the second pipe and subjected to second water treatment more downstream than the flow path in mid-course of the pressurization; and a water-treating substance supply device which supplies a water-treating substance for the second water treatment to the feedwater flow path in the feed pump, at a position more downstream than a connection position of the first pipe and more upstream than a connection position of the second pipe.

Abstract: A mine management system to mine ore in a mine including a mining area, and a second mine shaft connecting the mining area and a first mine shaft, the mine management system includes: a transporting machine loading the ore mined in the mining area and transporting the ore to a soil discharge area while traveling in the first mine shaft; a loading machine staying in the second mine shaft while a space for the transporting machine to travel therein is left inside the first mine shaft, excavating the ore in the mining area, conveying the mined ore from the mining area in an opposite direction, and loading the ore on the transporting machine; and a management device determining the mining area toward which the transporting machine is directed so that an operability of the loading machine becomes maximal or an operability of the transporting machine becomes maximal.

Abstract: A mine mining system mining ore from a vein in a mine including a mining area provided inside an ore body, a first mine shaft provided inside the ore body, and a second mine shaft connecting the mining area and the first mine shaft to each other, the mine mining system includes: a transporting machine which loads the ore mined in the mining area and transports the ore to a soil discharge area while traveling in the first mine shaft; and a loading machine which stays in the second mine shaft, excavates the ore in the mining area, conveys the excavated ore in a direction moving away from the mining area, and loads the ore on the transporting machine.

Abstract: A mine management system to mine ore in a mine including a mining area, a first mine shaft, and a second mine shaft connecting the mining area and the first mine shaft, the mine management system includes: a transporting machine loading the ore mined in the mining area and transporting the ore to a soil discharge area while traveling in the first mine shaft; a loading machine staying in the second mine shaft while a space for the transporting machine to travel therein is left inside the first mine shaft, excavating the ore in the mining area, conveying the mined ore from the mining area in an opposite direction, and loading the mined ore on the transporting machine; and a management device determining a mining area in which the loading machine is disposed based on a difference between a production plan and an actual production amount of the mine.

Abstract: 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.

Abstract: A mine management system includes a carrying machine that is loaded with ore and travels from a mining area to an earth removal area in underground of a mine, a loading machine that mines ore in the mining area and loads the ore onto the carrying machine, and a management device that sets a work mode in the underground based on an input signal, and changes a work parameter of the carrying machine and a work parameter of the loading machine.

Abstract: A transport machine is provided with a traveling device, a vehicle body, a vessel, a support device and a load detection device. At least a portion of the vehicle body is arranged above the traveling device. The vessel is provided on the vehicle body. The support device includes a slide mechanism that moves the vessel in a lateral direction with respect to the vehicle body, the lateral direction intersecting with a traveling direction of the traveling device when the transport machine travels straight. The load detection device detects a state of a load on the vessel. The slide mechanism is controlled based on a result of detection by the load detection device.

Abstract: A conveyance machine that conveys a load, the conveyance machine includes: a traveling unit; a vehicle body arranged above the traveling unit; a vessel provided on the vehicle body; a first detecting unit that detects a loading machine that loads a load on the vessel; and a processing unit that adjusts a position of the vessel according to a detected result of the first detecting unit so as the vessel to be positioned at a loading point where the loading machine performs loading.

Abstract: A combined cycle power plant feedwater system includes: a feed pump which supplies feedwater to a heat recovery steam generator; a first pipe which extracts part of the feedwater from a flow path in mid-course of pressurization of the feed pump; a first boiler supplied with the feedwater led into the first pipe and subjected to first water treatment; a second pipe where the feedwater discharged from a feed pump outlet flows; a second boiler supplied with the feedwater led into the second pipe and subjected to second water treatment more downstream than the flow path in mid-course of the pressurization; and a water-treating substance supply device which supplies a water-treating substance for the second water treatment to the feedwater flow path in the feed pump, at a position more downstream than a connection position of the first pipe and more upstream than a connection position of the second pipe.

Abstract: A mine management system includes a carrying machine that is loaded with ore and travels from a mining area to an earth removal area in underground of a mine, a loading machine that mines ore in the mining area and loads the ore onto the carrying machine, and a management device that sets a work mode in the underground based on an input signal, and changes a work parameter of the carrying machine and a work parameter of the loading machine.

Abstract: An auxiliary tunneling apparatus includes a reaction force receiver and first and second split components. In the excavation of a second tunnel by a boring machine, the reaction force receiver forms a replacement face of a side wall of the second tunnel on a first tunnel side where the first and second tunnels intersect each other, and a gripper of the boring machine pushes against the replacement face. The first and second split components are installed to push against the side wall of the first tunnel, support the reaction force receiver within the first tunnel, and move back and forth with respect to the side wall of the first tunnel.

Abstract: A mercury removal apparatus for removing the metal mercury in an flue gas containing the metal mercury and halogen, including an electro discharging device including a first electrode and a second electrode facing the first electrode, and activating the mercury by generating a streamer discharge, an oxidizing catalyst device provided at an output of the electro discharging device, to oxidize the mercury by reacting with halogen in the flue gas.