79 results about "Wing wall" patented technology

The utility model relates to a hot-pressing shaping die for a molded pulp packaging product. The defects of unreasonable design and the like in the prior art are overcome. The hot-pressing shaping mold for the paper pulp molding packaging product comprises a hot-pressing shaping concave mold for at least forcing the outer diameter of the original side wing wall thickness of a paper pulp molding wet blank product to be kept unchanged, and a shaping internal expanding mold which is matched with the hot-pressing shaping concave mold and forms a hot-pressing shaping profiling cavity for accommodating the paper pulp molding wet blank product, the shaping internal expansion die applies radial internal expansion force from inside to outside to the original side wing wall thickness, and the radial internal expansion force enables the original side wing wall thickness to be compressed and thinned to the set side wing wall thickness; and when the original side wing wall thickness is forced to be compressed and thinned by the radial internal expansive force, at least part of the inner wall of the original side wing wall thickness is shaped in the direction opposite to the radial internal expansive force to form an inward protrusion. The method has the advantages that the inner convex structure is shaped in the hot-pressing shaping stage, the risk that the inner diameter of the inner convex structure is further enlarged during post-treatment processing demolding can be prevented, and a molded pulp packaging product has better fastening tightness.

The invention belongs to the technical field of aeronautical manufacturing, and particularly relates to a wing wallboard numerical control posture adjusting and positioning device and method.The positioning device is composed of four parts including a four-axis numerical control posture adjusting mechanism, a shape maintaining plate, an adapter frame and a suction cup assembly; before the wing wall plates are separated from the wall plate assembly fixture, the shape maintaining plates are connected with the wing wall plates, and each wing wall plate is provided with two shape maintaining plates; the wall plate provided with the shape-preserving plate is hoisted to a wing general assembly fixture, the wing general assembly fixture is connected with the transfer frame through bolt holes in the shape-preserving plate, and the suction cups are fixed to the wing wall plate, so that the wing wall plate is stably connected with the shape-preserving frame, and deflection and movement do not occur in the moving process; the adapter frame is arranged on the four-axis numerical control attitude adjusting mechanism, and the spatial position of the adapter frame is adjusted through the four-axis numerical control attitude adjusting mechanism, so that the attitude of the wing wallboard is adjusted. The four-axis numerical control posture adjusting mechanism can achieve movement in four directions, the movement is transmitted to the wall plate through the shape preserving frame and the shape preserving plate, and adjustment of the posture of the wall plate is achieved. The wing assembly fixture is a part of a wing assembly fixture, can realize quick and accurate attitude adjustment and positioning of wing wallboards, and improves the wing appearance assembly accuracy.

The invention provides a wing panel stringer skin accurate butt joint device and a use method. According to the method, the actual space pose of the skin is determined through a composite skin forming mold, and then the theoretical space pose of the stringer is calculated; space attitude adjustment is conducted on the stringers to be in butt joint through the numerical control attitude adjusting and positioning structure, the stringer accurate positioning device grabs and positions the stringers and accurately moves the stringers in the X direction and the Y direction, finally the stringers are accurately positioned and pressed on the composite material skin, and accurate butt joint of the stringers and the skin of the composite material wing wall plate is achieved.

The utility model discloses a self-cleaning type drainage culvert gate which comprises a culvert pipe arranged in a dam body, wing walls are arranged at the two ends of the culvert pipe respectively, a gate is arranged on the wing wall at one end, a bottom plate is arranged below the gate, a take-up device is arranged at the top of the wing wall on the side away from the gate, and a cleaning block is arranged in the culvert pipe. The two ends of the cleaning block are connected with a forward pull rope and a reverse pull rope respectively, the reverse pull rope penetrates through a rope ring arranged on the inner wall of the culvert pipe and penetrates through the cleaning block back, the forward pull rope and the reverse pull rope are wound through a take-up device, the cleaning block is an annular air bag, and the air bag can be inflated and deflated. According to the self-cleaning type drainage culvert gate, the culvert pipe can be cleaned regularly, and clogging is prevented.

The present invention relates to the technical field of culvert construction, in particular to a precast and assembled reinforced concrete culvert splayed wall opening structure and process. The structure has wing walls arranged on both sides of the culvert opening. Each wing wall includes: a number of precast bases provided with bottom plates; a number of precast retaining plates, which are cross-assembled with the precast bases in sequence from the culvert opening outward to both sides, and the height gradually decreases; a first cast-in-place concrete structure located below the precast retaining plates as its support and cast in place with all the bottom plates together to form a wing wall foundation; a second cast-in-place concrete structure provided between the precast base and the culvert side wall and cast in place with the two together to integrate the culvert and the wing wall. Under the action of the first cast-in-place concrete structure and the second cast-in-place concrete structure, the entire opening structure and the connection with the culvert are integrated, improving the structural stress, enhancing the overall bearing capacity of the opening structure, reducing the material consumption, and effectively saving costs.

The large wing wallboard numerical control machining tool comprises an assembling base assembly and a spare cutter assembly, a feeding positioning part which is fixedly connected in an inserted mode is arranged above one end of the assembling base assembly, and a pin milling machining mechanism which is fixedly connected in an inserted mode is arranged above the other end of the assembling base assembly; and a standby cutter assembly is arranged above one side of the pin milling machining mechanism. According to the device, a fire extinguisher is mounted in a sleeving mode through a tank body base on the side of the top end of the tower, in this way, when dangerous fire accidents occur, workers can conduct rapid treatment so as to reduce the loss condition of equipment, a Z sliding base is arranged on the front side of the tower, and the Z sliding base is slidably connected with a lifting block with the output end connected with a hydraulic telescopic rod; the anti-toppling base is arranged on one side of the lifting block, so that the motor base, the servo motor and the T-shaped tool bit can effectively avoid dangers caused by toppling during product machining operation, and the machining safety of the equipment is improved.

The utility model relates to the technical field of hydraulic engineering, and discloses a rapid forming device for a vertical asphalt well of a sluice wing wall structure, which comprises a sweeping board, a stirring barrel is fixedly connected to the right side of the top end of the sweeping board, a feed port is arranged at the rear end of the top of the stirring barrel, and a top column is fixedly connected to the middle of the top end of the stirring barrel. A motor is fixedly connected to the inner wall of the top column, a main shaft is fixedly connected to the bottom end of the motor, a plurality of blades are fixedly connected to the outer portion of the main shaft, a scraping box is fixedly connected to the outer portions of the blades, two limiting blocks are fixedly connected to the inner wall of the scraping box, and a scraping plate is slidably connected to the inner wall of the scraping box. And two grooves are formed in the scraping plate. According to the utility model, asphalt and aggregate attached to the inner wall of the stirring barrel are rubbed down, so that the inner wall of the stirring barrel is prevented from being corroded due to long-time attachment of the asphalt and the aggregate, and the purpose of prolonging the service life of the device is achieved.

The invention discloses a fish luring device for a fishway entrance, comprising two wing walls fixedly arranged in a river channel for forming a fishway, fixed plates are provided at the fishway entrances of the two wing walls, a frame is fixed at one of the wing walls, a plurality of rotating columns are rotatably connected to the inner side of the frame, a front plate is provided on the outer side of the rotating column, an inner shaft is rotatably connected to the inner side of the rotating column, a pressure plate is fixed on both sides of the inner shaft, a plurality of groups of openings are provided on the inner side of the rotating column, a plurality of groups of sliding columns matching the openings are fixed on both sides of the pressure plate, and a second spring is sleeved on the outer side of the sliding column between the openings and the pressure plate, a first rack is slidably connected to the top of the frame, a tooth pattern that meshes with the first rack is provided on the outer top of the inner shaft, an extrusion cylinder is provided on the side of the fixed plate close to the frame, a first spring is provided inside the extrusion cylinder, the interior of the extrusion cylinder is connected to one end of a pipe, and one end of the first rack is slidably matched with the inner wall of the other end of the pipe through a piston; the invention provides a water flow rate in a stable range for the fishway entrance.

The invention relates to the technical field of natural gas test blowout, in particular to a method for simulating the combustion process of a combustion cell, a storage medium and electronic equipment, and solves the technical problem that potential safety hazards exist due to the fact that a wing wall is often cracked or part of a cell wall is melted in a traditional masonry combustion cell. The method for simulating the combustion process of the combustion cell comprises the steps that structural parameters of a target combustion cell are obtained, simulation combustion parameters are determined, the structural parameters comprise the size and the structure of the target combustion cell, and the simulation combustion parameters comprise parameters related to the combustion process of the target combustion cell; and constructing a simulation combustion cell according to the structural parameters, simulating the combustion process of the simulation combustion cell according to the simulation combustion parameters, and performing visualization processing to obtain a simulation result.

The invention belongs to the technical field of aviation assembly, and relates to an automatic feeding hole drilling device and method for wing butt joint area wall plate connection. Comprising a drill plate, a bushing, a threaded positioning pin, a clamping crank and a fastening nut, a plurality of cylindrical supports are arranged on the side, close to a wing, of the drill plate, the cylindrical supports are consistent with a wing wall plate in appearance, a guide hole is formed in the drill plate, the hole position axis of the guide hole is consistent with the hole position axis of a high-lock bolt of the wing wall plate, and a flange structure is arranged on the upper surface of the lining. Parallel open grooves are formed in the two sides of the flange structure respectively, and a lining is assembled in the guide hole and supported on the drill plate through the flange structure; the threaded positioning pin penetrates through the guide hole and is fastened by a fastening nut; in the drilling process, the clamping crank is clamped on the open groove of the flange structure, and the bush is prevented from rotating. The problem that a traditional drill jig is not attached to the appearance of an aircraft panel due to the fact that the appearance is prone to deformation during machining is effectively solved.

The utility model discloses an anti-scour stable structure of a spill type floodway, which comprises two bilaterally symmetrical flow guide wing walls arranged along the downstream surface of a retaining dam, and a protective layer cloth liner positioned between the two flow guide wing walls is paved on the downstream surface of the retaining dam. The emergency flexible spillway is ensured to be capable of defending the impact effect of overflowing and draining flood on the diversion wing wall and the bottoming protective layer cloth liner, so that the overflow and flood discharge of a reservoir can be safely and smoothly completed.

The utility model discloses an overflow type flexible floodway flood discharge energy dissipation structure which comprises a protective layer cloth liner laid on the downstream face of a water retaining dam, the left side and the right side of the protective layer cloth liner are each provided with a flow guide wing wall fixed to the downstream face of the water retaining dam, and a plurality of water stopping energy dissipation ridges are evenly arranged between the two flow guide wing walls at intervals from top to bottom. And anti-impact gabion net gabions filled with ripraps are arranged at the lower ports of the two flow guide wing walls. The water retaining dam is convenient to install, low in construction cost and high in reliability, and in the flood discharge process of flood prevention and control of small and medium-sized reservoirs, the flood discharge speed is reduced, and damage to the dam body of the water retaining dam is avoided.

The invention relates to an inclined shaft tunnel opening type tunnel portal excavation arrangement structure and a construction method.The arrangement structure comprises an upward slope and a rigid built-in soil retaining structure, the upward slope is arranged at an inclined shaft tunnel opening in the axis direction of the tunnel, and tunnel portal wall excavation embedded steps are formed in the range of covering layer side slopes on the two sides of the inclined shaft tunnel opening in a step-by-step excavation mode; a tunnel door wall bottom cushion layer is arranged at the bottom of the wall excavation embedded step, a step type tunnel door wall is poured on the tunnel door wall bottom cushion layer, the step type tunnel door wall is embedded into the upward slope, and a rigid embedded soil retaining structure is formed; a concrete cover arch is arranged at the top of an inclined shaft opening, the concrete cover arch extends inwards and is in transition connection with an inclined shaft open cut tunnel lining, a steel arch frame is arranged between the concrete cover arch and the inclined shaft open cut tunnel lining, and the whole structure is closed through longitudinal connecting ribs of the steel arch frame. Compared with a common bamboo cutting type tunnel portal and a wing wall type tunnel portal, the tunnel portal walls of the notch type tunnel portal are embedded into the covering layer slopes on the two sides, and the soil retaining capacity of the covering layer tunnel portal walls and the stability of the slope entering the tunnel portal are effectively improved.

The invention relates to the technical field of water conservancy projects, and discloses a drainage system for lowering the underground water level behind a water gate wing wall. The drainage system for lowering the underground water level behind the water gate wing wall comprises a water lowering assembly and a drainage assembly. The dewatering assembly is arranged behind the water gate wing wall and comprises a bottom filtering seepage layer, a flow guide drainage layer and a top filtering seepage layer which are sequentially arranged from bottom to top. One end of the drainage assembly is arranged on the diversion drainage layer, and the other end is connected with a drainage hole in the water gate wing wall body. According to the drainage system for reducing the underground water level behind the water gate wing wall, the water lowering assembly is arranged to filter and converge underground water, then the underground water is conveyed to the drainage hole through the drainage assembly arranged on the flow guide drainage layer and is drained from the back of the water gate wing wall, and therefore the drainage system has the good underground water converging effect; underground water can be rapidly drained, and the underground water level is lowered.

The utility model provides a near-wall air device for a boiler wing wall, the near-wall air device comprises a mounting assembly and an air inlet device, the mounting assembly is arranged on the outer wall of a wing wall pressure-bearing heated area, the air inlet device is connected to the mounting assembly, and an air outlet of the air inlet device is used for communicating with an opening of the outer wall of the wing wall pressure-bearing heated area so as to blow air into the wing wall. The near-wall air device is installed on the outer wall of a wing wall pressure-bearing heated area, an air outlet of the near-wall air device is aligned with an opening of the outer wall, air is blown into the wing wall, an air film is formed in the wing wall area, and the purpose of relieving high-temperature corrosion is achieved.

The utility model discloses a water conservancy project flood discharge facility, which relates to the technical field of water conservancy projects, and comprises an upstream wing wall, a cleaning mechanism is arranged in the upstream wing wall and is used for cleaning garbage and branches blocked by flood discharge, and the cleaning mechanism comprises a lifting unit; the intercepting unit comprises a fixing plate, a plurality of hook rods are fixedly installed on the front side of the fixing plate, and protection rods are fixedly installed on the left side and the right side of the fixing plate; the chain drives the fixed block to move, the fixed block drives the pulley seat and the limiting pulley to move synchronously, the limiting pulley moves along with the track of the limiting strip, and the pulley seat drives the lifting plate to move synchronously. And when the lifting plate drives the hook rod to move synchronously through the connecting frame and the fixing plate, garbage and branches on the water surface enter the hook rod to lift the garbage and the branches out, so that the situation that the garbage and the branches are excessively accumulated on the front side of the dirt blocking grating, consequently, the dirt blocking grating is blocked, and the water flow passing ability is affected is avoided.

The application discloses a warehouse wall, wing wall and pull beam integrated forming slipform device and method of rectangular warehouse, which comprises a template system, a hydraulic lifting system, an operation platform system, an open letter frame, an independent steel pipe support system and a pull beam main reinforcement temporary suspension system, the hydraulic lifting system comprises a support rod, a jack and a hydraulic control cabinet, the operation platform system comprises a cantilever support and an operation platform plate, the independent steel pipe support system comprises two steel pipe support frames, the pull beam main reinforcement temporary suspension system comprises a plurality of lifting eyes, the open letter frame is fixed on the warehouse wall template and the pull beam template respectively, and the pull beam main reinforcement is suspended and bound below the lifting eyes. The device can complete the integrated forming pouring of the warehouse wall, the wing wall and the pull beam, the method fills the gap of the construction technology of the integrated forming of the warehouse wall, the wing wall and the pull beam under the slipform, and fundamentally solves the problems of poor structural integrity, easy cracking and leakage, insufficient air tightness, unreliable prestressed nodes and low construction efficiency caused by secondary pouring.

The utility model provides a gypsum board ceiling anti -cracking section bar relates to gypsum board ceiling technical field, including first section bar and second section bar, first section bar includes first seam wall, first slip wall to the joint side extension and first wing wall, and first wing wall is used for connecting first gypsum board, second section bar includes second seam wall, second slip wall to the joint side extension and second wing wall, and second wing wall is connected with the second gypsum board adjacent to first gypsum board, second slip wall and first slip wall horizontal sliding fit, first seam wall and second seam wall are provided opposite, and the area of first seam wall and second seam wall opposite forms the process seam, and the process seam top is closed, and the bottom is open, can adapt to standard seam, micro -slit and seamless decoration effect, when the gypsum board produces thermal expansion and cold shrinkage deformation because of temperature change, the stress is released through the slip wall sliding, and the whole structure stability is ensured through the wing wall and the rigid connection of gypsum board, and has deformation adaptation ability and decoration integrity.

This property is a five-story house. The front of the house has balconies from the second to the fifth floor. The left side of each balcony is covered by a wing wall that runs along the left edge of the front exterior wall and extends from the first to the fifth floor. Furthermore, a handrail wall is provided on the right side of the balcony beyond the portion covered by the wing wall.

The utility model discloses a novel culvert structure, which belongs to the technical field of culvert structures, and comprises a longitudinal section, a single-hole culvert plane and a wing wall, a wing wall foundation I is arranged below the longitudinal section, a side wall body is arranged on the right upper part of the wing wall foundation I, hot asphalt is coated on the wing wall foundation I, a cutoff wall is arranged on the right side of the side wall body, and the single-hole culvert plane is arranged on the cutoff wall. A hole pavement is arranged below the plane of the single-hole culvert, curbs are arranged on the right side of the wing wall, a second wing wall foundation is arranged below the wing wall, and the first wing wall foundation and the second wing wall foundation are constructed through reinforced concrete, so that the overall bearing capacity and durability of the structure are remarkably enhanced; according to the reinforcement design, the adaptability of the culvert to extreme climate and heavy traffic is effectively improved, the service life of the culvert is prolonged, meanwhile, the long-term maintenance and repair cost is reduced, the outer surface of the first wing wall foundation is coated with hot asphalt, an additional waterproof and anti-corrosion layer is provided, and the stability and durability of the structure are further guaranteed.

The present invention relates to the technical field of fishways, and particularly relates to a rotary escalator fishway, which includes a fishway wing wall device installed on a dam surface. A rotary escalator device is arranged between the two side wing walls of the fishway wing wall device. The rotary escalator device is fixed between the dam surface and the two side wing walls through a lift device. A baffle and a power generation assembly are installed on the escalator A surface of the rotary escalator device. A water stop device is used for water blocking between the rotary escalator device and the dam surface. A power control system is arranged on the dam body, and the power control system provides power support for the rotary escalator device and the lift device. Among them, the lift device adjusts the height of the rotary escalator device to adapt to different water level heights.

The application relates to the technical field of bridge and culvert construction, and discloses a bridge and culvert lengthening side line protection structure and a construction method, which comprises an existing box-type bridge wing wall, the roadbed soil side of the existing box-type bridge wing wall 1 is provided with an advanced small guide pipe, an installation groove is arranged on the existing box-type bridge wing wall, a corrugated steel plate retaining wall is fixedly installed in the installation groove, a plugging steel plate is fixedly connected to one end of the bottom of the installation groove, and the plugging steel plate and the bottom of the installation groove jointly form an anchoring cavity; the seamless line does not need to be cut, the corrugated steel plate retaining wall is used to replace the existing wing wall part cut by a rope saw, the effective support of the roadbed filling is realized, the support of the roadbed soil free surface formed after the existing wing wall is cut is realized, the construction safety of the lengthened box-type bridge and the operation safety of the line are ensured, the operation of the existing line is not affected, and the defects of long construction period, large investment and speed limit operation requirement of the existing line are overcome.

This utility model relates to the field of crash barrier technology, and more particularly to a universal transition section wingless guardrail, comprising: a slope; posts installed on the slope; a three-wave plate installed parallel to the length of the slope via the posts; a friction beam installed between the slope and the three-wave plate along the length of the slope and fixedly connected to the three-wave plate; a concrete guardrail installed at the end of the slope near the three-wave plate along the length of the slope and fixedly connected to the three-wave plate and the friction beam respectively; a reinforcement component installed along the length of the three-wave plate, conforming to the outline of the three-wave plate, fixedly connected at one end to the posts and at the other end to the concrete guardrail; and a crash beam fixedly installed at the top of the concrete guardrail along the length of the concrete guardrail. This invention effectively optimizes the guardrail structure, improves protective strength, and reduces costs.

The present invention provides a method for reinforcing the intermediate nodes of reinforced concrete frame beams and columns by adding wing walls. The method comprises the following steps: determining the failure mode of the reinforced concrete frame and whether reinforcement is required; if the node is determined to require earthquake-resistant reinforcement; taking the bending strength of the node as a goal to be greater than the bending strength of the beam, calculating the reinforcement requirement of the node; determining the parameters for adding wing walls according to the reinforcement requirement of the node, thereby reinforcing the intermediate nodes of the reinforced concrete frame beams and columns. The method solves the problem that the material and geometric parameters of the wing walls cannot be quantitatively designed when the intermediate nodes of the beams and columns of the reinforced concrete frame are reinforced by adding wing walls in engineering. The method realizes the determination of whether the existing structure needs reinforcement; and for the structure determined to need reinforcement, quantitatively calculating the reinforcement requirement, thereby determining the concrete strength of the wing walls, the reinforcement of the wing walls, the number of embedded bars, and the size of the wing walls.

The utility model relates to the field of hydraulic engineering, in particular to a multifunctional ecological weir. The multifunctional ecological weir comprises a weir body, a water turning hopper, a traffic bridge, a water diversion channel and a stilling pool, the weir body is a water retaining building and achieves the basic functions of damming and water stopping, and the traffic bridge is arranged above the weir body and allows vehicles and pedestrians to pass through; the center of the downstream of the weir body is provided with a plurality of stages of water overturning buckets capable of automatically overturning, the left side and the right side of each water overturning bucket are connected with the wing walls on the two sides of the weir body respectively, and the water overturning buckets are overturned into slopes to form fishways for biological migration during water drainage; a water diversion channel is arranged on one side of the weir body to guarantee production and domestic water of downstream villages, and a stilling pool is arranged on the downstream of the weir body to prevent a downstream river channel from being scoured. On the basis that a traditional water conservancy facility guarantees river channel flood discharge scouring safety, harmony of water ecology and water landscapes is considered, and good comprehensive benefits are obtained.

The invention discloses a low-density high-temperature-resistant refractory material which comprises the following components in percentage by mass: 40%-50% of CA70 cement, 10%-18% of CA80 cement, 15%-20% of light mullite and 14%-35% of a binding agent. The refractory material provided by the invention can effectively solve the problems of cracking of a wing wall of a combustion pool and melting of a pool wall during natural gas blowout combustion, completely eradicates potential safety hazards, and meets the long-time blowout process requirements. Meanwhile, due to low density of the material, the material transportation cost can be effectively reduced. Under the condition that the compression strength, the breaking strength, the fire resistance and the stability are met, the refractory material disclosed by the invention is used for manufacturing a standard module and building an assemblable combustion cell, so that the construction period is shortened, the construction efficiency is improved, and the ecological environment is protected. The problems that a traditional combustion cell is long in construction period, large in workload, large in dismantling difficulty, difficult to maintain and the like are solved.

A water gate pump station belongs to the technical field of pump stations and comprises a downstream wall, a right wing wall is arranged on the outer wall of the downstream wall, a left wing wall is arranged on the other side of the outer wall of the downstream wall, a pump station outer wall is formed by the downstream wall, the right wing wall and the left wing wall, and a water gate structure is arranged in the downstream wall. The sluice structure comprises three sluice chambers and three breast walls, two rolling machines are arranged at the tops of the three sluice chambers, and through the sluice structure, when a downstream wall is erected, a cement soil backfill layer, a stone layer, a first cushion layer and a second cushion layer are arranged in concrete, so that stone and broken stone can absorb part of cement hydration heat, and therefore the downstream wall is erected. The temperature inside the concrete is reduced, so that temperature cracks are reduced, meanwhile, a proper amount of stones and gravels are added into the concrete, the use amount of cement can be effectively reduced, meanwhile, the engineering cost can be remarkably reduced by reducing the use amount of the cement, the service life of the sluice pump station is prolonged, and danger to workers is avoided.

An ink reservoir (30) is configured to be inserted into an installation space (108) of an installation section (101) in a forward direction in a front-to-back direction. The ink reservoir (30) comprises: a main body (31) which has a chamber (46) configured to store ink, an ink supply section (33) configured to supply the ink from the chamber (46), a front wall (40) which faces forward, a rear wall (41) which is positioned aft of and spaced apart from the front wall (40), a right wall (43) which is positioned between the front wall (40) and the rear wall (41) and has a right surface which faces to the right in the left-right direction perpendicular to the front-to-back direction, and a left wall (42).which is positioned between the front wall (40) and the rear wall (41) and is positioned to the left and spaced apart from the right wall (43) and has a left surface facing left, a first inclined surface (65) which adjoins the right surface of the right wall (43) at a rear end thereof and is inclined with respect to it, and a second inclined surface (64) which adjoins the left surface of the left wall (42) at a rear end thereof and is inclined with respect to it; wherein a distance between the first inclined surface (65) and the second inclined surface (64) decreases in the front-back direction towards the rear; wherein the first inclined surface (65) has a first flat surface between a front end and a rear end of the first inclined surface (65),and wherein the second inclined surface (64) has a second flat surface between a front end and a rear end of the second inclined surface (64).

This invention relates to the field of soil and water conservation technology, and provides a portable gully retainer and its deployment method for shallow gully management. The portable gully retainer includes a transverse retaining wall, a stilling basin, and protective wing walls. The transverse retaining wall is positioned horizontally along the width of the shallow gully and has an overflow outlet. The stilling basin is located downstream of the transverse retaining wall, with a gradient arrangement between the stilling basin and the overflow outlet. The protective wing walls are located at the end of the stilling basin furthest from the transverse retaining wall, and are angled to the flow direction of the shallow gully. The transverse retaining wall, stilling basin, and protective wing walls are connected to form a turbulent flow channel, which slows down the water flow velocity and controls the flow direction within the shallow gully. This invention effectively intercepts sediment, controls gully slope expansion and gully bottom erosion, is easy to assemble and disassemble, is reusable, and its deployment location and insertion depth can be dynamically adjusted according to the sediment deposition depth without affecting mechanized farming, fundamentally solving the problem of shallow gully management in black soil areas.

Bridge abutment (10), in particular concrete bridge abutment, for receiving a bridge element, comprising: an abutment wall (12) which has several abutment wall elements (16) arranged side by side, wherein each abutment wall element (16) is designed as a precast concrete element (16'), and at least one wing wall (14) which has at least one wing wall element (18) designed as a precast concrete element (18'), characterized in that each of the abutment wall elements (16) extends over the entire wall height (hW) of the abutment wall (12).