Abstract: A tensionable mine roof cable bolt having a resin grouted upper portion and a mechanically anchored lower portion. The lower portion includes a shaft which is swaged to the cable and accepts a mechanical anchor. The cable bolt is rotated during installation in a mine roof bore hole to mix resin and simultaneously engage the mechanical anchor with the rock. A drivehead press fitted onto the lower end of the cable fails upon tensioning of the bolt to a predetermined load.

Abstract: A method of lining a side face (11) of a landfill site comprising the steps of erecting a framework (10) including laterally spaced substantially vertically extending members (12) adjacent the surface of the side face (11), covering the framework (10) with a wire mesh (15), filling the space between the mesh (15) and the side face (11) with pieces of substantially inert material (16), laying an impermeable liner (17) over the wire mesh (15) and constructing a retaining wall (20) over the liner (9), wherein the vertically extending members (12) are tubular and have spaced apertures thereto along their lengths.

Abstract: A polymeric landscaping structure, for uses such as retaining walls and landscape edging, that may be co-aligned without an exposed end. The structure has a U-shaped exterior with exterior end walls. The U-shaped exterior forms a cavity in which an interior wall is disposed such that when the structure is cut to a predetermined length, the interior wall will be exposed and form an exterior end wall. The structure has premolded bores which can be co-aligned for various lengths of structures required for multi-structure installations.

Abstract: An adjustable wellhead connector is secured to the lower end of a BOP and riser assembly and has a housing which surrounds a groove profile on the upper outer surface of a first wellhead housing. The housing has a window on its inner surface which contains a removable first locking member. The first locking member has a groove profile on its inner diameter which mates with the groove profile on the first wellhead housing. The first locking member is movable between inner and outer radial positions which correspond to locked and unlocked positions, respectively. The first locking member is moved by a hydraulic system contained within the housing. The wellhead connector may be readily adapted to connect to a second wellhead housing having a different outer diameter than the first wellhead housing by replacing the first locking member with a second locking member. The second locking member enables the wellhead connector to connect a riser to the second wellhead housing.

Abstract: A method and device for on-site producing a cable at the location for placing the cable includes a mobile device supporting an arrangement for forming a protective sheath of the cable and an arrangement for inserting the optical fibers or electrical leads into the sheath and then discharging the sheath into a cable laying position. The device may include an arrangement for forming a trench for receiving the cable, an arrangement for inserting a filling compound into the interior of the sheath as the leads or fibers are introduced therein and means for supplying a filling material for filling the trench subsequent to insertion of the cable therein.

Abstract: An apparatus for monitoring soil compaction using a compaction machine which applies periodic impact blows to the soil surface. The apparatus comprising a rotatable, multi-sided compactor mass that applies periodic impact blows to the soil surface when rolled over that surface. Data related to the level of compaction of the soil surface is derived, during compaction of the soil surface, from the deceleration of the compactor mass as it impacts the soil surface. This is achieved using one or more accelerometers mounted on the impact compactor.

Abstract: A combination of old and new features to cultivate seaweed on the sea bottom comprising the steps of cultivating in a laboratory sporophytes and fixing them on lines, setting anchors on various water bottoms, installing near off-bottom artificial substrates, and transferring the pre-cultivated sporophytes onto these substrates. The complete method allows young seaweed and young kelp to survive the exaction of bottom and off-bottom grazing predators and inter-species competition.

Abstract: There is a support for underground mining and tunnel construction, comprising an outer tube and an inner tube, which can be pushed into each other in a telescoping manner. A piston acted upon by a hydraulic pressure medium is located in the outer tube. This piston, when acted upon by pressure, acts on the inner tube to cause an extension. The outer tube and the inner tube can be fixed on each other by means of a mechanical locking device.

Abstract: An extruded containment barrier panel (5) for use in forming a containment barrier wall about a waste material storage or disposal site is disclosed. The containment barrier panel has an elongate body panel (10) with a top end (11), a spaced bottom end (12), and a first side edge (14) and a spaced parallel second side edge (15) extending from the top end to the bottom end of the body panel. A C-shaped female connecting member (17) is formed along the first side edge of the body panel, and a complimentary male connecting member (22) is formed along the second side edge of the body panel, both of which extend the length of the body panel.

Abstract: A lightweight intervention system is described for use with single bore and dual bore intervention operations and which can be used with both horizontal trees and conventional trees and with wellheads without trees mounted thereon. The system is based on a two-part intervention apparatus; the lower part provides the pressure control and consists of an xmas tree or wellhead connector and structural housing in which a sub-sea test tree is located and is coupled to the xmas tree and an upper part, a disconnectable section, attaches to the lower part and consists of a sub-sea test tree latch housed within an xmas tree connector and additional pressure control equipment as required. This general structure can be configured in various ways to create different embodiments for use with horizontal trees and conventional trees which have a single through-bore requirement and a dual bore requirement respectively.

Abstract: A silt fence fabric with an enlarged edge fits into a slotted blade edge, and is paid out through the slot into the ground as the blade cuts a slit in the ground.

Abstract: A panel assembly to be used in an RCC dam structure, or the like, includes a precast concrete panel, a geomembrane liner extending over the full face of the panel and a geotextile sheet backing on the liner directly attached to the panel. The liner seals the panel against water leakage in a manner that allows shifting of the dam structure without placing undue stress on the liner or the interconnecting sealing strips. The geotextile sheet is preferably fabricated of a mat of non-woven polyester fibers and the geomembrane liner is preferably polyvinylchloride. The geotextile sheet is attached by hardened concrete slurry integral with the panel. Once the panel assembly is connected to adjacent panel assemblies by the sealing strip to form the dam structure, stress concentrations are relieved in the event that the panels shift for any reason.

Abstract: A connector assembly includes first and second connector parts. The first connector part has a bearing portion and the second connector part is connectable with the first connector part. A carriage comprises an abutment which is disposed against the first connector part and the carriage is reciprocatable between a forward position for connecting the connector parts and a retracted position for disconnecting the connector parts. A bias is provided for biasing the bearing against the abutment. The bearing portion and the abutment cooperate to permit pivoting of the first connector part in response to a force in any lateral direction on the first connector part. The first connector part may include a weakened portion providing a reduced resistance to shear. The connector assembly may also form part of a wellhead assembly.

Abstract: Heavy metal bearing products during production, processing and/or handling, and/or in landfills, storage or retention areas are stabilized prior to the generation or management as a waste by applying heavy metal stabilizing agents into the product stream thus avoiding complex and costly processing and treatment of waste under hazardous waste regulations.

Abstract: WavBrakerSteps is a hydrodynamic structure comprising a main form (20, 22, 24, 26), a series of inclined upward ramped steps in the shape of a sine wave curve. WavBrakerSteps redirect and dissipate the relentless attacks by energizes and forces of sea waves, wind waves, tidal forces, ship and boat wakes. These energies and forces scour and erode the base or toe, the supporting structures, of waterfront bulkheads, seawalls and seacoasts. The action by waves flowing upward and then downward over the inclined, curved and ramped WavBrakerSteps prevents undercutting, undermining and sinking from occurring. These natural actions protect the beach environment.

Abstract: A method for controlling deformation of an erected structural metal plate culvert or underpass during backfilling of the erected structure comprises: building progressively a reinforced earth retaining system on each side of the erected structure by alternately layering a plurality of compacted layers of earth with interposed layers of reinforcement to form reinforced earth on each side of the erected structure and securing to each side of the structure each said layer of reinforcement in the reinforced earth, whereby such securement of each said layer of reinforcement to said structure controls deformation of the erected structure during backfilling with the reinforced earth on each side of the structure. The layer of reinforcement may be a plurality of strips extending away from the structure, or a reinforcement mat of interconnected rods.

Abstract: A retaining wall construction includes a lower mechanically stabilized earth bulk form with tensile members projecting from the front face of the bulk forms and connected to precast wall panels that are spaced from the front face of the bulk form. The space between the front face of the bulk form and the panels is filled with concrete. Positioned on top of the reinforced concrete and the first bulk form, as well as along the sides thereof, are additional bulk forms which include tensile members connected directly to the front facing panels.

Abstract: A method and apparatus for sustaining optimum fluid entrainment conditions in a contaminant extraction well is disclosed. More specifically, the present invention includes a central controller which communicates with a pressure detector and an aspiration control source that are connected to a contaminant extraction well. The central controller causes aspiration air to flow into or out of the extraction well based upon the vacuum level that has been measured by the pressure detector. This system enables the vacuum to be maintained at a predetermined level, and allows the well to operate as changes occur in the groundwater content of the area in which the well is operating.

Abstract: The present disclosure is directed to a method and apparatus for drilling rig mobilization and demobilization. The rig is assembled or constructed at a remote site. It is later taken apart and transported to another remote site or back to a staging point. The rig itself comprises a rig floor which is supported on a set of vertical rig legs which support the rig floor for movement between raised and lowered positions. An equipment module is preferably installed on the rig floor. It goes above the rig floor while other modules are attached under the rig floor and provide additional equipment and service space. The method involves the transportation of the rig floor, the legs, equipment module and other modules to and from the rig site by hover craft while riding on a top deck on the hover craft for lateral transfer and installation.

Abstract: A tensioning device is provided for applying tension to a riser from a surface deck of an offshore oil or gas well. The tensioning device is used with a riser of the type having threads formed on an exterior surface thereof. A tension ring of the tensioning device is formed from first and second ring halves that are clamped together about the riser. The first and second halves have inner threads for engaging the threads of the riser. A clearance exists between the first and second ring halves when the ring halves are clamped together about the riser to allow the first and second ring halves to be tightened against the exterior surface of the riser so that the tension ring is securely fastened to the riser. Fastening means are used for clamping the first and second ring halves together about the riser. Tensioning members that couple at one end to the tension ring and at the other end to the surface deck are used to apply tension to the riser from the surface deck.