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6926100 |
Hole reaming apparatus and method
An enhanced reaming apparatus and method are disclosed. A reaming assembly may have a motor and a pump that provide linear force, torsional force, and pressurized drilling fluid to a reamer to...
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6899842 |
Method and installation for laying a cylindrical pipe on a support
A process and plant for laying a pipe in a trench comprising placing a flattened tubular preform in the trench, the perform having a reinforcement surrounding an inner seal, the reinforcement being...
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6802673 |
Tunnel boring with foamed composition
A process of boring a tunnel using an earth-pressure balance shield boring tunnelling machine having a cutting head, an excavation chamber for soil removed by boring and conveying means for removal...
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6772134 |
Control means for a horizontal boring tool
Control apparatus for a horizontal boring tool is described which drives a boring lance via boring rods. The tool includes an input interface for receiving actual values of controlled variables of...
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6761415 |
Trailer for a tunnel borer follower train
A trailer for a tunnel borer follower train comprises a chassis provided with a plurality of wheels, the chassis at rest presenting a longitudinal axis and a longitudinal plane of symmetry that is...
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6644754 |
Tunnel excavating machine
A tunnel excavating machine having an excavating machine body can be moved forward by shield jacks. A rotatable cutter head is mounted in a front portion of the excavating machine body. An erector...
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6595724 |
Tunnel excavating machine and excavating method
A tunnel excavating machine of high-speed construction capable of completely stopping invasion of water and allowing covering members to be assembled easily is provided. This tunnel excavating...
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6382732 |
Cutter head, tunnel excavating machine, and cutter replacing method
A cutter head is rotationally drivably mounted on a front portion of a tunnel excavating machine body, a plurality of cutter spokes are provided radially on the cutter head, a plurality of mounting...
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6375390 |
Method for widening road, superhighway or railway tunnels, without interrupting the traffic
A construction method for widening road, superhighway or railway tunnels, without interrupting the traffic flow includes a first stage of excavation; in steps, of the ground between the theoretical...
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6357965 |
Method, system and device for building a wall in the ground
A wall is built in the ground by pulling a wall building device having cross-sectional dimensions which are substantially equal to the dimensions of at least a part of the cross-section of the wall...
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6347838 |
Method for replacing cutters of tunnel-excavating machine, method for excavating tunnel, and tunnel excavating machine
Cutter spokes are disposed on a cutterhead of a tunnel-excavating machine. Movable blocks, each having a roller cutter, are movably supported by each of the cutter spokes while being connected one...
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6305754 |
Tunnel excavator with S-shaped soil plate
A tunnel excavator includes a pair of cutters arranged side by side at a front portion of a tunnel excavator main body. These cutters rotate in opposite directions for excavating the earth to form...
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6287052 |
Material and method for lubricating the metal surfaces of an earth-pressure tunnel boring machine
A method of boring a tunnel with a tunnel boring machine comprising injecting into the formation to be bored just before the cutting tools of the boring machine and optionally into the internal...
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6142577 |
Hydraulic muck handling system for tunnel boring machine
A tunnel boring machine for collecting earth excavated upon rotation of a cutter disk includes a non-pressurized chamber behind the cutter disk for collecting earth excavated by the cutter disk and...
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6092963 |
Tail structure of shield driving machine
The present invention relates to a tail structure of a shield driving machine, and in particular relates to an improvement technique of the tail sealing portion of this type of shield driving...
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6089791 |
Tunnel construction method
To construct a tunnel in a formation (11, 15) with zones of high hydraulic pressure (15), a gallery (13) is driven from the stable formation (11) toward the problem formation zone (15). At least...
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6082930 |
Shield driving machine
The present invention relates to a shield driving machine by which eliminates excessive work of the ground when working at a curved section while suppressing an increase of the sinking of the...
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5931601 |
Tunnel excavator
A tunneling machine intended to stably carry out gripper replacement by restricting the load imposed on gripper jacks for the main gripper as much as possible during excavation of an inclined...
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5722800 |
Seal and its production method for the creation of load bearings, removable earth masses for the construction of underground structures such as cavity structures
A bulkhead for manufacturing underground structures such as earth cavities in a closed construction method, formed of sealing walls arranged as an enclosure and sealing earth masses to be removed...
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5707176 |
Earth discharge control system for small-diameter pipe propelling machine
An earth discharge control system for a small-diameter pipe propelling machine controls the excavated earth discharging operation of the small-diameter pipe propelling machine. The small-pipe...
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5501548 |
Method for controlling the direction of a shield tunneling machine and an apparatus therefor
When a shield tunneling machine is deviated from the scheduled line while being propelled, the deviation of the shield tunneling machine from the scheduled line is detected and according to the...
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5478170 |
Controlling apparatus for excavator
An object of this invention is to improve precision in the operation, operating efficiency, and reliability of an excavator. A soil condition at a place where an excavator (1) is advanced is...
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5393172 |
Shield tunneling machine
A shield tunneling machine comprises a shield body having a soil chamber, an inside chamber and a partition wall. The soil chamber has a conical peripheral surface converging gradually rearward. A...
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5382114 |
Tunnel excavation apparatus
A tunnel excavation apparatus comprises a frame mounted on crawler tracks and provided with pistons comprising stabilizer feet, a power unit, a working unit, and auxiliary movement and positioning...
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5380127 |
Non-entry method of underground excavation in weak or water bearing grounds
A method of excavating an underground area liable to flooding or collapsing during excavation, wherein the area is susceptible to disaggregation by high pressure water jet and is located above rock...
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5370479 |
Shielding apparatus
A shielding apparatus comprises a cylindrical shield body, a crankshaft supported by the shield body rotatably around the axis of the shield body, a plurality of rotors successively provided in the...
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5330292 |
System and method for transmitting and calculating data in shield machine
The present invention discloses a system and a method for transmitting data in a shield machine and for calculating the filling amount of a void by detecting the distance to the natural ground. The...
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5312163 |
System for aiding operation of excavating type underground advancing machine
A system for supporting the drive of an excavating type underground advancing machine is provided to lighten the operator's burden so that an unskilled operator can perform operation comparable to...
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5284403 |
Control method and control equipment for drilling apparatus
A method for controlling advancement of a drilling apparatus comprising a drill head having tools therein and at least one conveying tube is disclosed. The method utilizes changes in pressure...
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5240350 |
Apparatus for detecting position of underground excavator and magnetic field producing cable
Magnetic field producers are disposed either at the leading portion of an underground excavator or at a reference position in front of the underground excavator. The magnetic field producers can be...
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5236284 |
Drilling apparatus and method for its control
A drilling apparatus and a method for its control maintains the alignment of a drill head while driving a tunnel. The control is achieved by manipulating the center of gravity of a drill bit unit...
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5228752 |
Tunnel boring machine
Tunnel boring machine whose driving shaft (4) adjacent to the boring head (6) is journalled in a bearing (12) which is intended to take up only radial forces. Shaft (4) is at its other end...
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5221160 |
Subterranean connecting method for construction of shield tunnel and connecting apparatus therefor
A disclosure is made of a subterranean connecting method and a connecting apparatus therefor which are suitable for use when two shield machines are used to excavate a pair of tunnel sections from...
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5211507 |
Method of making a huge elongated space of square or rectangular cross section under the ground
Disclosed is a method of making a huge elongated space of square or rectangular cross section under the ground. The outer shell of the huge elongated space is built in the form of integral...
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5205613 |
Tunnel boring machine with continuous forward propulsion
A tunnel boring machine includes a cutterhead having a plurality of cutting units and being rotatable on a machine frame. Two sets of three anchor shoes float relative to the frame and are disposed...
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5199817 |
Process of providing an elongate underground cavity
In the provision of elongate underground cavities having a large volume are to be provided, particularly in the construction of underground railroad stations having at least two stories, it is...
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5190407 |
Rectangular shield excavating machine
A rectangular shield excavating machine comprises a quadrangularly tubular shield body having a space for receiving an excavated matter at the front end, a rotor disposed in the space so as to be...
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5186579 |
Apparatus for controlling direction of underground excavator
According to the present invention, there is disclosed an apparatus for controlling the direction of displacement of an underground excavator including a turnable jack to perform excavating...
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5184918 |
Recoverable tunnelling machine
The tunnelling machine for driving inaccessible tunnels by pressing forward by means of tubes can be moved out again through the tunnel driven by it. For this purpose, an annular outer area (2b) is...
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5180252 |
Earth pressure system shield process
The invention relates to an earth pressure system shield process. First of all, an excavation additive consisting of the mixture of an agent for improving fluidity and viscosity of an excavated...
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5174683 |
Telescopic double shield boring machine
The invention relates to a boring machine for digging tunnels in a wide variety of qualities of ground, of the type comprising a first front shield, containing the boring head, and the members for...
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5167468 |
System for the robotic fabrication of pipelines and tunnels along unlimited three-dimensional curvilinear paths
The present invention is a system for the robotic fabrication of a set of parallel pipelines or tunnels along a curvilinear path without limitation as to distance, direction and depth. A large...
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5156490 |
Shield tunnelling apparatus
A shield tunnelling apparatus is provided that includes a first tubular shield body in which a cutter assembly for excavation and a drive mechanism for driving the cutter assembly are disposed; a...
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5135326 |
Articulated shield tunneling machine
An articulated shield tunneling machine suitable for excavation along a curvature with an articulated shield having front and rear shield sections. In contrast to the conventional apparatus which...
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5129760 |
Forming a passageway through the ground
A method of forming a passageway (P) through the ground by inserting into the ground a structure (1) comprising a superstructure (3) and a substructure (2). The superstructure (3) is inserted into...
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5127711 |
Hopper and hood combination for tunneling machine and tunneling machine having the same
A hopper and hood combination for muck transfer in a tunneling machine, and a tunneling machine having the same, in which a muck collar is mounted to a cutterhead support and projects into a...
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5125768 |
Method and apparatus for the production of underground pipelines
A method and apparatus for producing an underground pipeline from an excavated hole uses a drill head with a suitable tool attached thereto. Loosened soil is transported out of the drilled tunnel...
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5118220 |
Method of building underground cavern and tunneling machine
A method of forming an underground cavern aiming at forming an underground cavern of a large scale at a very deep place in soft ground and soft rock layers safely and economically, and a tunneling...
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5104262 |
Tunnel boring machine
Tunnel boring machine comprising a number of swingable arms (11,12,13,14) provided with boring tools (41,42,43,44) for the working of the tunnel wall outside its normal diameter. The arms may be...
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5104261 |
Tunnel boring machine
Tunnel boring machine for reaming of a pilot tunnel (11). The machine housing (12) is provided with a projecting part in front of the boring head (13), said projecting part comprising a part (20)...
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