Matches 101 - 150 out of 205 < 1 2 3 4 5 >
Match Document Document Title
4769192 Pulsating slip form apparatus and method  
A method and apparatus for forming wet concrete employing a slip form having a radially expandable elastic outer shell comprising pouring concrete around the exterior surface of the outer shell and...
4710058 Concrete lining machine  
An improved concrete lining machine is provided for lining the walls of a bored tunnel. The machine typically consists of three separable machine sections each having a frame and a plurality of...
4705116 Mole with rotary vibrator  
A ground boring tool known as a mole is fitted within its conical head (1) with a pneumatic-powered rotatory vibrator (8) which generates severe radial vibrations. As a result the progress of the...
4695188 Lined rock cistern or tunnel  
The present invention concerns a rock cistern or tunnel. The inner surface of the wall structure of the rock cistern is a tightly sealing lining. The supporting layer consists of a steel-reinforced...
4691789 Process for establishing a clear horizontal borehole in a subterranean formation  
A process for establishing a clear, generally horizontal borehole path in a subterranean formation includes drilling a generally horizontal borehole using a drill pipe, drill bit and an uphole...
4687375 Circular heading machine  
A circular heading machine for excavating tunnels by advancing a machine in stepwise fashion and erecting tunnel supports, having an elongate machine body at the forward end on which a forwardly...
4674913 Apparatus for construction of continuous article having bores  
This invention provides an apparatus for construction of an underground or aboveground continuous article (98) which has at least one bore (99). In case the article is made underground, the...
4657435 Underwater tunnel construction  
A novel method of underwater tunnel construction is provided which comprises the employment of a double-layered flexible mold or form and the introduction of both an inert and a reactive fluid into...
4652174 Method of forming underground ducts, conduits and the like  
The manufacture of extended, inaccessible holes for underground ducts, conduits and the like is performed by a closed construction process, wherein the preferably remotely-controlled excavation is...
4645378 Movable form front for a tunnel-lining form  
A form front positioned between the shield of a tunnel excavator and a tunnel-lining form movable relative to both the shield and the tunnel-lining form. The form front comprises an annular support...
4640646 Apparatus for the construction of tunnels and shafts  
A tunneling machine with a leading ring, a follower ring, an overlapping joint connection between the leading ring and the follower ring, a pressure ring, advancing piston/cylinder assemblies, and...
4629362 Shield tunneling machine  
A shield tunneling machine in which a segment holding member is movable through a lifting beam in the radial direction of a shield frame so that the segment holding member holds a segment and sets...
4627765 Tunneling machine  
A tunneling machine of the type having a leading shield, a trailing shield, an annular form connected to the trailing shield by respective cylinder units for the emplacement of the concrete behind...
4621947 Method of and apparatus for the lining of a tunnel with concrete  
A movable wall delimiting a space into which concrete is pumped between a shield lining a tunnel wall and an inner form is advanced by the concrete pressure relative to the shield. This movable...
4621948 Tunnel lining form  
A tunnel casing is formed by cylindrical casing sections whose proximal flanges are not only bridged by the usual drawbolts tending to pull the casing sections toward one another, seals and...
4618298 Method for constructing an enlarged tunnel and apparatus for forming the same  
A method and apparatus for constructing an enlarged tunnel in a portion of a predetermined region of an existing tunnel. A circumferentially enlarged portion is excavated to define a starting base...
4615644 Prestressed tunnel lining  
The invention provides a tunnel lining and a method of constructing the tunnel lining by aligning prestressed resilient lining panels of uniform thickness, such as plywood sheets, where...
4613258 Apparatus for setting and removing tunnel casing rings  
An apparatus for moving casing rings of an interior casing in tunnels, shafts and the like structures is disclosed. The apparatus includes a tubular support bridge structure arranged interiorly...
4610572 Method of building strengthened embankment body  
A method of building a strengthened embankment body which involves the steps of repeatedly burying first nets and embanking and roll-compacting the body being built on ground until a required...
4610573 Tunneling machine  
A tunneling machine according to the invention has a mobile and automotive base movable on the ground horizontally and longitudinally toward a face to be cut away, a turntable on the base defining...
4594025 Tunnelling and tunnel relining equipment  
A method of constructing a lined or relined tunnel utilizes four lining segments, three of which (1, 2, 3) have a longer arcuate length than the fourth (4). The tunnel is constructed within a...
4591297 Method of building strengthened, embanked foundation  
A method of building a strengthened, embanked foundation capable of forming therein a tunnel comprising steps of burying, during embanking work of lower part of the foundation, a plurality of nets...
4569616 Driving process of enlarged tunnel  
A driving process for enlarging a tunnel wherein a primary shield machine is driven along an ordinary diametrical tunnel to a predetermined region to be enlarged. An enlarged starting base is...
4558906 Shield machine  
A shield machine for enlarging a portion of an existing tunnel includes an inner and outer double cylinder shaped shield machine body with a cylindrical outer shield portion and a cylindrical inner...
4557627 Apparatus and method for tunnel construction with shield drive  
In tunnel construction with shield drive locational concrete is brought in stages directly behind the shield as tunnel lining. In order not to have to interrupt the shield progress during...
4530621 Shield driving process for enlargement  
A shield driving apparatus and process for enlarging the periphery of a predetermined region of an existing tunnel lined with a primary shield segment assembly wherein some segments of such a...
4519730 Method for constructing underground structure  
A method of building a hollow structure in an embankment during its embanking work, wherein portions inside the embankment which are to form slope or side wall layers of later excavated cavity for...
4505622 Process and arrangement for the support of underground cavity systems by an efficient safety casing wall  
This invention relates to a method for bracing an underground cavity, wherein the cavity is lined with a tensionable layer, an expansible arch is then inserted against said layer, the arch is then...
4505613 Method for lining pipes in pipelines  
A method for lining pipes in a town gas underground pipeline. The method is characterized in that carrier air is flown together with plastics mist passing through a route comprising a branch line...
4456401 Method and apparatus for relining underground passageway  
There is disclosed a method, apparatus and system for in situ relining underground pipes, lines and passageways particularly sewer lines. A sewer line which has deteriorated and/or otherwise...
4451176 Apparatus for and method of driving tunnels  
Apparatus for, and a method of, driving a tunnel utilizes a drive shield to support the forward end of the tunnel where debris material is removed. At the rear end of the drive shield, a lining is...
4450666 Econo bricking ring  
The specification describes a bricking ring for use in positioning and temporarily retaining bricks in a circular overhead configuration. The bricking ring intended for use in lining kilns...
4439064 Tunnel framings  
The present invention relates to improvements in U-shaped tunnel framings for poured concrete constituted of two half shells or half casings in the form of a right-angled dihedron. The framings are...
4437788 Method and apparatus for the advancing of a sliding form  
A method and apparatus for forming continuous concrete walls in tunnels or galleries is provided. More particularly, the invention relates to a form that is slidable through the gallery or tunnel....
4432667 Insulation of tunnel linings  
A tunnel or shaft lining is installed nondisruptively in a medium such as soil by longitudinally advancing an assembly (10) of tunnel lining sections (12-1 to 12-8) arranged in end-to-end...
4423981 Concrete lining of drilled shaft  
In conjunction with the mining of minerals from the earth, it is necessary to construct deep verticle shafts normally between 10 and 20 feet in diameter and typically between 3000 and 6000 feet in...
4407609 Apparatus and method for providing negative buoyancy for tunnel forms  
A method and apparatus for eliminating the necessity of providing hold-down devices, such as spuds and anchors, for opposing buoyancy in tunnel forms. The method comprises providing a movable...
4396313 Method of forming flooring in tunnels  
A method for providing a flooring in a tunnel using a moving floor is disclosed herein. This method includes providing the moving floor with a flat, horizontally extending support surface extending...
4371290 Shuttering for establishing concrete lining of tunnels  
A characteristic feature of the proposed shuttering is the fact that its adjacent sections are interconnected through means preventing them from being mutually inclined in a vertical plane; said...
4363565 Tunnelling  
The invention is concerned with a method of constructing a lined tunnel using a tunnelling shield having a tall skin and in which the tunnel lining is of the expanded type comprising a number of...
4363202 Apparatus for lining kilns, tunnels and the like  
A rig for lining with brick a kiln, tunnel or like surface embodies a frame that is of variable size to suit different surface diameters, and two relatively adjustable jacks support deformable...
4315701 Shuttering for erecting a concrete tunnel lining  
The invention relates to a mechanism for stripping off pivotally interconnected vault segments of shuttering and includes two eccentric shafts interconnected by a connecting link which is mounted...
4298296 Form handling system  
A system is described whereby a large elongated monolithic conduit is formed within an excavation of a single continuous pour of concrete. The open core of the conduit is formed by an...
4275836 Method and apparatus for spraying concrete  
To reduce the impact velocity of the concrete mass upon a surface, such as a wall, a branch line is arranged at the concrete conveying hose and at a point removed from the spraying nozzle. The...
4270876 Method of lining a vertical mine shaft with concrete  
The apparatus includes a cylindrical retainer form spaced inwardly of the wall of the shaft by the desired thickness of the liner to be poured and having overlapping edges which seal against...
4260297 Machines for positioning roof supports in a tunnel  
The present invention is directed to a machine for positioning roof supports in a tunnel. The machine includes a body unit having a track engaging assembly by which the body unit may be suspended...
4247221 Process for lining tunnels  
Plastic hose means, preferably of high pressure polyethylene admixed with a flame retarding agent and treated to render the same antistatic and characterized by a resistance to tearing of at least...
4245926 Welded grid, primarily for securing underground cavities, cavity systems, as well as process for making the grid  
Welded grid structure for securing underground cavities such as mine roads, consisting of two sets or grid systems of parallel straight bars disposed in parallel planes and connected by welding to...
4226573 Hydraulically-operated machines  
A hydraulically-operated machine adapted to receive water at an upper level from a relatively large reservoir and to discharge the water to a lower level, which includes a piston head carried upon...
4222681 Shield for constructing tunnels with in-situ formed concrete lining  
The proposed shield comprises in its frame a drive for advancing the shield along a path, a device for absorbing the thrust force from the drive and transmitting it to concrete in the process of...
Matches 101 - 150 out of 205 < 1 2 3 4 5 >