Matches 51 - 100 out of 205 < 1 2 3 4 5 >
Match Document Document Title
5253955 Automatically advancing supporting and sliding form for introducing an in-situ concrete lining  
A slide formwork with a formwork body (10) comprising several formwork segment groups (12, 22, 32) lying adjacent to one another in circumferential direction. Each of the formwork segment groups...
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...
5211510 Propulsion method of pipe to be buried without soil discharge and an excavator  
A propulsion method of a pipe to be buried without soil discharge comprising the steps of drilling the ground with the tip of an excavator propelling in the ground, taking the drilled soil into the...
5183356 Method and device for distributing pumpable thick matter into several delivery pipes  
A method is provided for distributing sludge-type matter from a supply line into several distributor conduits. The flow of matter from the supply line is directed through a manifold conduit...
5180253 Arrangement of prestressing tendons in a pressure tunnel  
Each of the prestressing tendons (3, 4, 18) in a pressure tunnel is made up of a bundle of monostrands (21) held together. Each of the monostrands (21) of one of the prestressing tendons is...
5171105 Process and device for lining tunnels and ducts having circular and non-circular cross-sections, especially for canal and tunnel construction  
In a process and a winding device for lining elongated spaces such as tunnels or ducts of circular and non-circular cross-sections, especially for canal and tunnel construction band is employed....
5169264 Propulsion process of buried pipe  
In a propulsion process of buried pipe, an endless pipe to be buried is formed by sequentially curving a pipe material of long hoop shape made of a plastic material, and this endless pipe is...
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...
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...
5141363 Mobile train for backfilling tunnel liners with cement grout  
A mobile train for mixing foamed cement grout within a tunnel and injecting the grout into the annular cavity between the tunnel bore and liner. Cement slurry is suppled to the train through a...
5139751 Apparatus for thrusting a hose along a conduit  
An apparatus for pushing a hose along a conduit includes a rotatable reel, a hose wound on the reel, and a driving arrangement for drawing the hose off the reel and for pushing the hose into and...
5129761 Pipe placement method and apparatus  
A method and associated apparatus are shown for highly efficient manipulation of multiple pipe sections within the close confines of a tunnel formation to construct an underground conduit. Overall...
5108228 Method of lining branch pipe portion of underground main pipe with rigid plastics tube  
A method of forming a rigid or semirigid plastics tube lining over the inner surface of a branch pipe portion as joined at its one end to an underground main pipe through the other end thereof...
5106234 Method and device for the construction and/or the reconditioning of pipelines and conduits  
A method and a device for the construction and/or the reconditioning of pipelines and conduits, by applying or forming around a sheath of impervious flexible material, a tubular member made from...
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...
5101608 Adjustable brick support ring  
An adjustable brick support ring (10) formed from a plurality of arcuate ring segments (16, 18) that are pivotally connected to each other in endwise fashion. Each ring segment includes a mating...
5076729 Tunnel-driving and support system  
A tunnel support machine for use in a tunnel forming system wherein the tunnel support machine follows a tunnel-driving machine during the driving operation. Through the operation of the tunnel...
5022789 Method and machine for constructing shafts  
There are disclosed a method and a machine for constructing a shaft having a substantially circular cross-section. According to the present invention, the shaft having a shotcrete formed on a...
5013189 Intermediate pipe-jacking apparatus  
An intermediate pipe-jacking apparatus is adapted to propel pipes such as sewer pipes, conduit pipes and the like in the ground between a start shaft and a destination shaft in order to install the...
5005911 Quadrishoe tunnel boring machine  
A tunneling machine body carrying a rotary cutterhead can be advanced continuously by exerting advancing thrust force on it, first by top and bottom jack bipods reacting from top and bottom anchor...
4990027 Shield tunneling method and shield machine therefor  
A small diameter shield tunnel is constructed by using a shield machine and assembling within a tail portion of the machine a set of three 120° arcuate segments into a segment ring. An annular...
4984933 Grouting method and apparatus  
A gelling agent is added to a fast setting cement slurry comprising water, cement and anti-washout retarder and the mix is injected into a void containing running water and allowed to set to form...
4940360 Insulated tunnel liner and rehabilitation system  
An insulating and rehabilitation system especially adapted to unlined rock tunnels for the prevention of ice buildup on tunnel arches, walls and base structure the prevention of future...
4936709 Method and apparatus for laying pipes in the ground with advance of propulsion shafts installed with pipe-supporting attachments  
A method and apparatus for laying pipes of low bearing force like a polyvinyl chloride pipe and others in the ground with a propulsion pipe laying method, wherein an excavation device to excavate a...
4930937 Box culvert traveler for use with concrete forming systems  
A traveling culvert/tunnel forming structure including upright waler assemblies positioned in transversely spaced relation on each side of said forming structure, the waler assemblies being adapted...
4917538 Tunnel lining process and apparatus therefor  
A tunnel lining process and an apparatus for use in the process in the prior art are improved in order to greatly enhance a lining speed and to facilitate the work of placing concreate for lining....
4915541 Method and apparatus for continuously boring and lining tunnels and other like structures  
Disclosed is a continuous tunneling and lining machine. The machine is capable of simultaneously boring and lining a tunnel through a solid medium. The machine comprises four major components...
4911578 Process for making a tunnel and advancing a tunneling read with a wall-supporting shield  
In my process for digging a tunnel with the help of a tunnel excavator which has a working chamber under atmospheric pressure, the local front wall is supported with the help of a pressurized...
4909668 Movable sealing assembly for tunneling machines  
The movable tight-sealing ring is positioned between an excavator cover end and a form or casing structure. For a satisfactory movability of the excavator cover end interstice, the tight-sealing...
4907911 Pipeline renovation system  
A method of lining an existing pipe by pulling through it a collapsible, flexible, lay-flat liner having an innermost layer of impervious, elastomeric material which is compatible with the fluid to...
4895480 Method and apparatus for formation of a tunnel lining  
A method and apparatus for closing or sealing the gap space defined between a tunnel support frame and the ground during the tunneling formation of adits in connection with underground mining...
4892441 Apparatus and a method for distributing concrete and similar materials to selected points of use  
This invention is both an apparatus and a method for distributing concrete coming from a concrete pump to anyone of a plurality of points of use. An intermediate conduit is connected with a main...
4889449 Slipliner grouting method and system  
The present invention is directed to the control of the movement of slip liners in grouting operations through the use of inflatable grouting bags and to the control of bulkhead sealing in slip...
4874268 Method and apparatus for building pipeline and shield tunnelling machine  
An apparatus for building a new pipeline while breaking a plurality of existing pipelines extending parallel to each other, comprises: a shield tunnelling machine for performing the excavating...
4863313 Method for lining tunnel wall formed by shield excavation  
A method for lining a tunnel wall formed by a shield excavation includes filling a space between the tunnel wall surface and the outer peripheral surface of a lining form in two stages by dividing...
4856936 Form for concrete-placement tunnel lining  
A form for a concrete tunnel lining usable behind a tunnel excavator with a traveling shield is made of an inner tunnel-lining sheathing and a form front. The inner tunnel-lining sheathing is...
4854776 Process and apparatus for lining a tunnel with concrete  
A process for lining a tunnel with concrete behind a tunnel excavator having a for front advanced along with an excavator head in which the concrete is forced between the surrounding subterranean...
4834580 Method and device for driving a tunnel  
Method and device for driving a tunnel by means of a tunneling machine (10). At the same time as the tunnel is driven, an injection hole (91) is drilled in front of the tunnel front (90) by a rock...
4830538 Method and apparatus for refurbishing deficient pipes  
A refurbishing method for an existing pipeline under the sea or on the ground by inserting a rigid inner pipe having its front end temporarily blocked includes (a) driving the rigid pipe by...
4826639 Moulding process and apparatus for making arch-shaped concrete structures  
An apparatus for moulding prefabricated curved concrete sections for use in the construction of arched or vaulted structures comprises a curved, upwardly convex mould made up of a series of...
4820458 Process for continuously lining a tunnel with extruded concrete  
A tunnel having an inner surface and extending along an axis is lined with pumpable concrete having a predetermined hardening time and by a form having an annular inner wall and an axially movable...
4813813 Method for constructing a tunnel  
The known method for constructing a tunnel of the type in which a shield tunnelling machine is shoved by means of a concrete lining jack and a shield jack equipped on the shield tunnelling machine...
4808030 Shield tunneling method and assembling and disassembling apparatus for use in practicing the method  
Shield tunnelling method and assembling and disassembling apparatus for use in practicing the method. A shield having shield jacks is actuated for drilling a hole in the ground. Inner forms and...
4804295 Shielded tunnel excavator  
A tunnel excavator has a substantially tubular shield having rotatably mounted on one end a motor-driven cutting disk rotatably carrying a multiplicity of roller cutters. The shield is comprised of...
4799824 Method of making covering wall of tunnel made by shield type excavator  
A method of making a primary concrete covering wall on the surface of the wall of a tunnel which extends behind a shield type tunnel excavator. A form structure for casting concrete to make the...
4789267 Method of and apparatus for concrete tunnel lining  
An apparatus for making a tunnel lining from concrete in a single operation with a tunnel excavator comprises a tunnel lining form consisting of a plurality of tunnel lining form segments and a...
4786206 Lining tunnel wall made by shield type tunnel excavator  
A tunnel wall lining method is provided, wherein annular recesses circumferentially are provided in outer periphery of a lining form into which arcuate segments are assembled, a plurality of rows...
4780025 Device for laying and suspending cables  
A device for laying and suspending cables (38), in particular low-voltage, medium-voltage and signal cables, is fitted in a man-sized duct or tunnel with brackets (10) secured in spaced...
4770256 Soil drilling  
Soil drilling tools are provided with at least two sidewardly movable plate members adapted to exert pressure on the wall of a bore hole to prevent a cave in.
4768898 Process and apparatus for continuously lining a tunnel with extruded concrete  
For continuously lining a tunnel with extruded concrete a pumping device for feeding the concrete and a form having an interior form member and a forwardly movable form front are employed. The...
Matches 51 - 100 out of 205 < 1 2 3 4 5 >