Abstract: The invention discloses a retrievable sand consolidation anchor head prestressed anchor rod, an anchoring jack and an application method thereof, and belongs to the technical field of geotechnical engineering. The retrievable sand-consolidated anchor head pre-stressed anchor includes a bolt body 6, a rigid frame 5, a load member 1, a sand column 2, a pressure receiving member 4, a cut-off member 3, and an anchor pier 8. The anchoring jack includes a force transmitting frame 12, a first guiding plate 25, a second guiding plate 28, and a housing 13. The application method includes an anchoring method using the retrievable sand-consolidated anchor head prestressed anchor rod and a method of recovering the retrievable sand-consolidated anchor head pre-stressed anchor rod. After the anchoring of the reclaimed sand-consolidated anchor head pre-stressed anchor rod, the bolt body can be recovered and reused, and the operation is simpler and more environmentally friendly.

Abstract: An excavation apparatus (1) for an operating machine includes an apparatus body (2) having a portion (4) for coupling to the operating machine and delimiting a first body compartment (6). An excavation tool (8) of the apparatus (1) is partly housed, rotating around a rotation axis. A self-leveling body (10) includes a pair of abutment runners (12, 14) with a working surface (Z) and rotatably mounted in an idle manner with respect to the apparatus body (2), so the coupling portion (4) assumes different angular positions with respect to the abutment runners (12, 14). The apparatus body (2) is mechanically connected to the self-leveling body (10) to weigh in a balanced manner on the transverse walls (16, 18) and on the abutment runners (12, 14).

Abstract: A controller for controlling a longwall mining system. The controller includes a non-transitory computer readable medium and a processor. The controller also includes computer executable instructions stored in the computer readable medium for controlling operation of the industrial machine to receive a first signal from a first camera, receive a second signal from a second camera, analyze at least one of the first signal and the second signal to identify one or more edges of a structure of the longwall mining system ahead of a shearer in either a first direction of travel of the shearer or a second direction of travel of the shearer, generate a forward-looking mine profile based on the one or more edges, and control the longwall mining system based on the forward-looking mine profile.

Abstract: A subsea umbilical laying method includes mechanically coupling an umbilical termination assembly at an end of a first umbilical to an umbilical termination assembly at an end of a second umbilical, and subsequently deploying the mechanically coupled ends of the first and second umbilicals together in a subsea umbilical laying process.

Abstract: A wave capturing and attenuating structure comprising at least one pair of floating structures (100) each coupled with each other in a substantially parallel manner for capturing water-surface waves. The respective floating structures (100) comprise: a body (10) consisting of a floating floor (12) and a side wall (14) extended down from a perimeter of the floating floor (12); and a floating member (20) connected to the floating floor (12) of said body (10) in order to support said body (10) for submerging in the water. Said floating member (20) comprises a wave baffle (22) having at least one part of the baffle (22) located above the water-surface level, wherein said wave baffle (22) of said floating member (20) comprises a surface formed as a vertical plane and inclined at an acute angle with respect to a line extended along the length of said body (10) as viewed from above. Each pair of said floating structures (100) is fixed together such that a passageway (E) is formed as a wave passage.

Abstract: A flowing water channel device comprises a tubular conduit made of fluid impervious material, and a plurality of orifices extending along a longitudinal axis of said tubular conduit. Within each of the plurality of orifices, an interior plurality of strands pass from the orifice to an interior of the tubular conduit, an exterior plurality of strands pass from the orifice to an exterior of the tubular conduit, and an intermediate plurality of strands are interlaced with the interior and exterior plurality of strands and configured at least partially within the orifice. Each of the interior plurality of strands, exterior plurality of strands, and intermediate plurality of strands is made of a fluid permeable material.

Abstract: Provided is a method of forming a roadway by filling gangue paste during wide roadway excavation of a thick coal seam belonging to the technical field of mining industry. The method comprises: firstly designing a width of a filing strip and a width of a new excavation roadway according to a geological condition of a coal seam; secondly, determining a length of each filling, i.e.

Abstract: A cylindrical cutting system, a bit holder assembly, and machine for milling or scarifying road surfaces are disclosed. A bit holder is attachable to a milling platform, and includes an inward facing surface for engaging a corresponding mating surface of the milling platform. The inward facing surface of the bit holder and the mating surface include aligning fastener and pin openings. A fastener and a pin are inserted within the respective openings to couple the bit holder to the milling platform. The mating surface may define a part of a recess formed in the milling platform. A wear element may be disposed at the leading side of the bit holder. Multiple platforms may be coupled together with axially extended platform fasteners.

Abstract: A method and apparatus are disclosed for at least partially repairing a defect in a tubular composite layer. The apparatus comprises a plurality of independently movable abutment elements (3820) each supported in a spaced apart relationship via a respective one of at least one support member (3810). Each abutment element is associated with a respective drive axis along which the abutment elements are movable and the drive axes of all abutment elements extend outwardly from a common centre point.

Abstract: The invention relates to a working device for a ground-processing device having a milling drum with a milling drum tube on whose surface working tools are mounted in a projecting manner and are intended to come into contact with the material to be milled during the milling process, wherein the working device has a powertrain for driving the milling drum. In order to improve the running smoothness of a ground-processing machine, provision is made according to the invention for at least one load weight to be arranged, preferably interchangeably, on the powertrain and/or on the milling drum to increase the kinetic energy.

Abstract: A marine reel lay method pipeline installation system for laying a flexible pipeline on the seabed a pipeline includes a pipeline launch tower adapted to launch the flexible pipeline in a firing line along said tower; a pipeline guide provided at an elevated position; one or more tensioners, wherein the tensioner frame includes two frame segments with track units, the two frame segments being adapted to be conjoined to each other and being pivotably mounted to said pipeline launch tower about a respective vertical tensioner pivot axis, allowing said two frame segments to be pivotable between a closed flexible pipeline laying configuration; and an open configuration; one or more vertical trolley rails supported by said pipeline launch tower and positioned between said vertical tensioner pivot axes of said two frame segments; a trolley movable along said one or more vertical trolley rails in a vertical trolley path which is unobstructed when said two frame segments are in the open configuration; and a hoisting

Abstract: The Helical segmental lining is an invention in tunneling industry wherein segments are designed in helical shape that are connected by interlocking system. The proposed helical tunnel lining method allows for segment erection and excavation to be completed concurrently and continuously by Tunnel Boring Machine (TBM) which will result in increasing the tunneling speed. The segments have tongue projection on the two trailing sides (circumferential and radial) and similar groove recess in the opposite two leading sides. This forms a tongue-and-groove joint at both circumferential and radial joints. The system allows for optional post-tensioning (PT) strand to be inserted into the leading circumferential side of the segments. The optional PT strand is fitted into a continuous groove located at the leading circumferential side of the segments.

Abstract: Systems and methods for monitoring extraction height and volume of material extracted for a mining machine. The method includes operating the machine using a shearing motion at a plurality of cut locations. The method includes receiving boom height data and power consumption data. The method includes determining a cut start time. The method includes determining whether a relocation has occurred. The method includes, when the relocation has occurred: determining a cut end time. The method includes storing, in a memory, the cut start and end time, and the boom height and power consumption data. The method includes adjusting the operation of the mining machine based on the cut start and end time, and the boom height and power consumption data for at least one of the cut locations.

Abstract: A vibratory compactor is provided. The vibratory compactor may include a compactor plate, a frame coupled to the compactor plate, wherein the frame may include an inner space and a housing. The frame may include a plurality of mounting brackets coupled between a first side member and a second side member of the frame. The vibratory compactor may include a vibration generation device coupled to the compactor plate within the inner space of the frame. The vibratory compactor may include a plurality of isolators, each isolator coupled to one mounting bracket of the plurality of mounting brackets. The housing may be coupled to the plurality of isolators, wherein the housing may include couplers removably coupled to a top surface of the housing. The couplers may be configured for coupling the vibratory compactor to an excavator type vehicle.

Abstract: An asymmetric debris-flow discharge channel is provided. The debris-flow discharge channel has a main drainage channel for discharging a debris flow and an auxiliary channel provided outside of the main drainage channel. The side walls of the auxiliary channel are integrated with the side walls of the main drainage channel or provided outside of the side walls of the main drainage channel. The debris-flow discharge channel also has a break section integrated into a side wall of the auxiliary channel. The top width of the break section is equal to the top width of the auxiliary channel A method for designing and building the asymmetric debris-flow discharge channel is also provided, which provides a lower initial cost, higher safety performance, and a lower maintenance cost at the operating stage.

Abstract: Described is an apparatus for securing a boat to a dock or other marine structure that moves with the boat as the boat is raised and lowered by waves or the tide. The apparatus is secured to a dock or other marine structure and includes a track, preferably in a shape similar to that of an “I” beam, a carriage that moves along the track, and a bumper that is attached to a front portion of the carriage. The boat is secured to either a mooring line or mooring cleat on the carriage. As the boat is raised or lowered by waves or the tide, the carriage is also raised or lowered along the track accordingly. The bumper is secured to the outside of the carriage and prevents the boat from being damaged if the boat collides with the bumper.

Abstract: A system for use with contaminated land comprises: a region defined by or within the land, the region having a plurality of locations defined therewithin; at each location, one or more apparatus selected from the group comprising: sensor, well, electrode, cathode, injector and vent; an array of photovoltaic cells for producing DC power; a ground-mounted frame supporting the array, the frame having a boundary substantially contiguous with the region and supporting the photovoltaic cells; a fluid distribution system of conduits supported by the frame; a power system for delivering DC power to each of the locations; and a communication system adapted to provide for remote control of the apparatus.

Abstract: The invention relates to a retaining work (12) in ground (S), the work having a vertical front portion and separating a first portion of ground (S1) from a second portion of ground. The front portion (14) is in the form of juxtaposed arched walls (16), each arched wall (16) presenting a concave side facing the first portion of ground and a convex side facing the second portion of ground, and the retaining work (12) further includes a rear portion (20) comprising a plurality of wall elements (22) having their largest faces extending vertically in the second portion of ground (S2), each wall element (22) being arranged between two adjacent arched walls (16) and extending transversely relative to the front portion (14).

Abstract: A reelable pipeline includes a pipe-in-pipe section and a single pipe section coupled to the pipe-in-pipe section. The single pipe section has a bending stiffness that is different from the bending stiffness of the pipe-in-pipe section. The reelable pipeline includes a transition piece connected between the pipe-in-pipe section and the single pipe section and having a bending stiffness that varies along its length.

Abstract: A cutting tool is provided. The cutting tool comprising a tip, a body and a shank for attaching the cutting tool to a tool holder. The body has an outer body surface, a body shank end arranged towards the shank and a body tip end arranged towards the tip. The tip has an outer tip surface, a tip peak and a tip base, the tip base being attached to the body tip end of the body. The cutting tool comprises a plurality of grooves extending substantially continuously over both the outer tip surface and the outer body surface, each groove having a predetermined extension in a longitudinal direction of the cutting tool.