61 results about "Steel dam" patented technology

The invention belongs to the technical field of hydraulic engineering operation and maintenance, and relates to a prediction and early warning method for operation settlement of a steel dam gate on a complex foundation, in the operation process of the steel dam gate, a multi-parameter sensor network is used for collecting settlement monitoring data of different positions of the steel dam gate, and input characteristics and output characteristics are determined; sorting and screening different input features by using minimum redundancy and maximum correlation, and screening out the input features of which correlation coefficients are lower than a threshold value by using Spearman rank correlation coefficients; a normalization and Kalman filtering iteration prediction model is adopted to preprocess the screened input features, and multivariable time series data are obtained; inputting the multivariable time sequence data into the trained multivariable regression prediction model to obtain a real-time settlement prediction value of foundation settlement; and comparing the real-time predicted value with a set multi-level early warning threshold value, and carrying out corresponding-level early warning on the settlement exceeding the warning limit.

The utility model discloses a high-strength hydraulic dam which comprises a base, a dam assembly, a hydraulic driving assembly and a supporting assembly. The base is fixedly built on a river channel through cement concrete, a flow intercepting groove is formed in the middle of the base, and mounting grooves are symmetrically formed in the two sides of the flow intercepting groove. The dam assembly comprises a steel dam body arranged in the intercepting groove, the lower portion of the steel dam body is rotationally arranged on the base through a bottom shaft, and the two ends of the bottom shaft extend into the mounting grooves in the corresponding ends correspondingly; the hydraulic driving assembly comprises two hydraulic cylinders hinged to the end walls of the two mounting grooves correspondingly, the plane where the axis of each hydraulic cylinder is located is perpendicular to the plane where the axis of the bottom shaft is located, and the telescopic ends of the two hydraulic cylinders are rotationally connected with the two ends of the bottom shaft through connecting frames. The supporting assembly comprises a plurality of supporting rods arranged in parallel. According to the steel dam, the structural strength after the steel dam body is turned over is guaranteed, and the stability of the vertical closure state is maintained.

The utility model discloses a diversion canal foundation pit supporting system for urban river channel steel dam construction. The problems that in the prior art, a diversion canal supporting mode is complex, a foundation pit is deep, the distance is large, and cost is high are solved. The urban river channel steel dam construction diversion canal foundation pit supporting system comprises a diversion supporting structure, an opposite-pulling structure and a slope protection structure, the supporting structure comprises a plurality of steel sheet piles and steel pipe piles, and the steel sheet piles are close to one side of a steel dam and are arranged in the extension direction of a diversion canal. The steel pipe piles are sequentially arranged on the outer side slope of the diversion canal in the extension direction of the diversion canal, the opposite-pull structures are connected to the steel pipe piles and the corresponding steel sheet piles, the slope protection structure comprises a reinforcing mesh arranged on the slope surface of the diversion canal, and the reinforcing mesh is fixed through anchor rods. According to the supporting system, the steel sheet piles and the steel pipe piles are combined, and on the premise that the supporting problem in the process of manufacturing the diversion canal in steel dam construction is solved, the water retaining property, the seepage-proofing performance and the rigidity of the supporting structure can be improved, and the cost can be reduced.

The utility model discloses a steel dam gate hydraulic control valve which comprises an oil duct block and an oil inlet formed in the outer wall of one side of the oil duct block, two oil outlets in the front face of the oil duct block are provided with a first plate type stop valve and a first plate type one-way valve, and a second electromagnetic reversing valve is installed on the outer wall of the other side of the oil duct block. A first electromagnetic reversing valve is installed at an oil outlet in the top end of the oil duct block, and an overflow valve is installed at an oil outlet in the back face of the oil duct block. According to the multifunctional control valve, the capabilities of flow regulation, pressure regulation, water level control and the like of the steel dam gate can be realized, multiple functions are integrated on one control valve, the structure of a system can be greatly simplified, and compared with a plurality of single-function control valves arranged on a hydraulic pipeline, one multifunctional control valve can reduce the number of pipeline connection and hydraulic elements, and the cost is reduced. And the complexity of the system is reduced.

The invention relates to an adjusting platform for mounting large embedded parts of a steel dam gate and a mounting construction method of the adjusting platform. An adjusting platform for installing a large embedded part of a steel dam gate comprises two supporting units. Each supporting unit comprises at least two longitudinal supporting rods, adjusting mechanisms corresponding to the longitudinal supporting rods in number, limiting supporting plates corresponding to the longitudinal supporting rods in number, a transverse supporting rod, a plurality of cushion blocks and a plurality of lateral supporting pieces. The longitudinal supporting rod comprises a lifting part and a fixed part which are not connected with each other; the adjusting mechanism comprises a sliding sleeve, a force exerting plate and a hydraulic jack. By means of the design of the adjustable adjusting platform, a firm, stable and reliable supporting frame can be provided for the large embedded part, the initial position plane and flatness of the large embedded part are guaranteed, after the large embedded part suspension is arranged on the adjusting platform, accurate position adjustment can be conducted through the adjusting platform, and the adjustment precision is improved. Therefore, a traditional hoisting adjustment mode is avoided, and the safety risk is greatly reduced.

The utility model relates to the technical field of water conservancy equipment, particularly discloses a hydraulic positioning device for a bottom shaft of a steel dam, and solves the problem of lack of emergency operation in the prior art. Comprising a fixing base corresponding to the tail of the force arm in position, two limiting bases are symmetrically arranged at the upper end of the fixing base, a gap between the two limiting bases corresponds to a limiting penetrating hole in the tail of the force arm in position, a limiting penetrating hole is formed in the upper end of each limiting base, and a locking column is arranged in each limiting penetrating hole in a matched mode. The locking column is connected with the limiting base through a guiding piece, a U-shaped clamping plate is arranged at the lower end of the locking column, and a locking pushing mechanism used for driving the locking column to move horizontally is arranged on one side of the fixed base. And meanwhile, a manual mode can be switched, manual operation can be carried out in an emergency state, and the working reliability of equipment is guaranteed.

1. Name of the designed product: rotating steel dam (270 degrees). 2. Use of the designed product: for controlling water flow in both directions of the dam. 3. Design points of the designed product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

The present application belongs to the technical field of turnover steel dam gate, and particularly relates to a turnover steel dam gate, which aims to solve the technical problem that when a relatively high water surge impacts on the gate, the impact force will directly act on the dam body, which is easy to cause damage to the dam body, and comprises a steel dam gate assembly, a hydraulic cylinder assembly, a buffer connecting assembly and a displacement adjusting assembly, the steel dam gate is connected with the hydraulic cylinder assembly, the hydraulic cylinder assembly is connected with the buffer connecting assembly, the buffer connecting assembly is connected with the displacement adjusting assembly, and the displacement adjusting assembly is connected with the steel dam gate assembly; in order to reduce the effect of the water surge on the concrete base, when the water surge impacts on the steel dam gate, the force is then transmitted to the concrete base through the hydraulic cylinder assembly, the absorption of the force is then realized through the inner end buffer spring between the hinged sliding block and the extruded sliding block, the impact force on the concrete base is then reduced, and the protection of the concrete base is then realized.

The utility model relates to the technical field of hydraulic steel dams, and discloses a device for accurately controlling the height of a hydraulic steel dam, which comprises a bottom plate and a mounting frame plate, a hydraulic control pump station and a control system are sequentially mounted at the top of the bottom plate from left to right, and a hydraulic steel dam panel and a hydraulic oil cylinder are mounted at the top of the mounting frame plate. The output end of the hydraulic oil cylinder is installed on the back face of the hydraulic steel dam panel, a tilt angle sensor is further installed on the back face of the hydraulic steel dam panel, a lubricating assembly is installed on the top of the installation frame plate and comprises a rotating shaft and a cylinder, the rotating shaft is installed on the outer wall of the hydraulic steel dam panel and rotates along with the hydraulic steel dam panel, and the cylinder is installed on the outer wall of the hydraulic steel dam panel. The side, away from the hydraulic steel dam panel, of the rotating shaft is fixedly connected with an eccentric wheel, and the barrel is installed at the top of the installation frame plate through a support. According to the utility model, through the cooperative work of the hydraulic control pump station, the control system and the tilt angle sensor, the height of the hydraulic steel dam panel can be accurately adjusted.

The utility model discloses a noise reduction steel dam with a silt discharging function and relates to the field of steel dams, the steel dam comprises a bottom plate, side piers located on the two sides of the bottom plate, a main dam assembly installed on the bottom plate and matched with the two side piers and an auxiliary dam assembly installed on one side of the main dam assembly, and the bottom plate and the two side piers are matched to form a main runner; the main dam assembly is installed on the bottom plate and used for conducting controllable water retaining sealing on the main flow channel. A mounting groove for mounting a dam body is formed in the bottom plate, the main dam assembly is provided with a main shaft mounted in the mounting groove through a sealing rotating shaft and a gate leaf connected with the main shaft, rotating along with the main shaft and used for retaining water, and the two sides of the gate leaf are in sealing fit with the inner side faces of the two side piers; the installation groove is concave, the concave position is matched with the main shaft to form an auxiliary flow channel, two openings of the auxiliary flow channel are located on the two sides of the main dam assembly respectively, and the auxiliary dam assembly is installed at one opening of the auxiliary flow channel. The steel dam has the bottom controllable drainage function, the use requirement can be met, and noise reduction can be achieved.

The utility model relates to an inside and outside water level difference monitor device for a steel structure dam body island-building cofferdam method. The inside and outside water level difference monitor device comprises a U-shaped clamp, a connecting rod, a guide pipe, a scale, a floating ball, a laser irradiation scale instrument and a laser horizontal calibration instrument, the U-shaped clamp is installed at the top of the cofferdam, the two sides of the U-shaped clamp are connected with the guide pipes through the connecting rods, vertical guide grooves are formed in the guide pipes, the scaleplate is inserted into the guide grooves and slides up and down along the guide grooves, and the floating ball is fixed to the lower end of the scaleplate. The laser horizontal calibration instrument is arranged at the top of the U-shaped clamp, and the laser irradiation scale instrument is arranged at the top of the scale. The utility model further relates to an inside and outside water level difference monitor system for the island-building cofferdam method of the steel structure dam body. The water level monitoring device is simple in structure, easy to popularize and assemble and disassemble, has certain universality, can visually display the water level difference in real time and synchronously monitor the water level at multiple points, and belongs to the technical field of monitoring devices in the water conservancy and municipal engineering construction technology.

The invention relates to the technical field of dam water stopping devices, and discloses a steel dam side water stopping device which comprises vertical plates, the two vertical plates are fixedly connected to the left side and the right side of the interior of a flap gate correspondingly, the outer sides of the vertical plates are fixedly connected with a mounting box, and the middle of the inner side of the mounting box is fixedly connected with a bag belt. And a connecting block is slidably connected to the front side of the interior of the mounting box, a second bolt is in threaded connection with the left side of the connecting block, water stopping rubber is in threaded connection with the left end of the second bolt, and first bolts are in threaded connection with the upper side and the lower side of the connecting block correspondingly. When the flap gate is closed, oil is filled into the bag belt to enable the bag belt to expand, the connecting block is pushed to slide along the mounting box, the water stop rubber is driven to be tightly attached to the side wall of the dam body for sealing, when the gate is opened, the bag belt contracts to enable the water stop rubber to retract and break away, friction and abrasion in the operation process are avoided, and the position and extrusion degree of the bag belt can be adjusted through the first bolt and the second bolt. And the abrasion is effectively reduced, so that the reliability of the device is improved.

The utility model provides a bottom shaft water stop device for a steel dam gate and the gate, the bottom shaft water stop device comprises a bottom shaft, a base and water stop rubber, and the water stop rubber is fixed on the base; the water stop rubber comprises a main body part and a water stop part, the water stop part comprises a water stop surface, and the water stop surface is in contact with the surface of the bottom shaft to stop water; a silt shoveling end is arranged on the upper portion of the water stopping part and attached to the surface of the bottom shaft, the upper surface of the silt shoveling end gradually rises in the direction close to the bottom shaft, and when the bottom shaft rotates, the surface of the bottom shaft rotates relative to the silt shoveling end. Through the design, deposition of silt or floating objects on the water stop piece can be reduced, meanwhile, abrasion of the water stop rubber is reduced, and the water stop effect is guaranteed.

The utility model discloses a steel dam for water conservancy project, including bottom horizontal axle, hinged seat, locking ear seat, locking support, branch pier, bottom axle drive arrangement and waterproof suit. The utility model discloses through hinged seat and locking ear seat through mechanical device connection, and the stability of steel dam structure has been effectively strengthened, has guaranteed the security and long -term use in the stability performance of steel dam in the operation process. The adjustable structure of locking support and locking ear seat can be adjusted according to actual conditions, so that the steel dam maintains good adaptability under different working environments, and the combination of motor, speed reducer and transmission device provides stable power output for the bottom axle drive arrangement, which can effectively drive the rotation of the bottom horizontal axle. The driving device can adapt to efficient operation under different load conditions, ensure normal use and continuous work of the steel dam, improve the automation level and operation convenience of the system, and the branch pier is made of high-strength steel, so that the steel dam has strong carrying capacity.

The utility model discloses a steel dam gate bottom shaft through-wall sealing device, and relates to the field of through-wall water sealing jackets, the steel dam gate bottom shaft through-wall sealing device comprises two water sealing jackets, the ends, close to each other, of the two water sealing jackets are fixedly connected with rubber rings, and the ends, away from each other, of the two water sealing jackets are integrally provided with connecting flanges; protruding rings are integrally formed in the middle sections of the outer walls of the two water sealing sleeves, screws penetrating out of the connecting flange are arranged at the ends, away from each other, of the two protruding rings, and the outer walls of the screws are in threaded connection with locking nuts for pressing the connecting flange. End face sealing pieces are installed on the end faces, close to each other, of the two end face sealing pieces, and the pressed connecting flange is used for driving the end face sealing pieces to be tightly attached to a wall. According to the water sealing sleeve, the protection mechanism and the installation mechanism are arranged, the installation mechanism can facilitate installation of the protection mechanism, the installed protection mechanism can protect the connecting flange on the inner side of the lock wall, and therefore the service life of the water sealing sleeve is prolonged.

The present invention discloses a multi-condition bottom shaft driven flap gate energy dissipation protection range design method, which specifically relates to the technical field of steel dam gates, and specifically includes the following steps: given the hydraulic parameters of the incoming flow and the gate structure parameters; calculating the projection distance of the overflow water tongue before design, and the bottom plate split should be avoided at the projection distance of the water tongue; calculating the water depth after the critical jump to determine whether it is necessary to set up an energy dissipation pool; calculating the length of the main energy dissipation area and the length of the protection range, and obtaining the main energy dissipation area and the protection area range according to the energy dissipation and anti-scouring hydraulic calculation. The present invention obtains the main energy dissipation area and the protection area range according to the energy dissipation and anti-scouring hydraulic calculation, which facilitates engineering designers to quickly judge the energy dissipation protection range of the steel dam gate, and is suitable for the energy dissipation protection range design of various operating conditions of the steel dam gate.

The utility model discloses a hydraulic type steel dam which comprises a middle steel plate and side steel plates, concrete piles are arranged on one sides of the side steel plates, a shaft rod is horizontally arranged between the bottoms of the concrete piles, a plurality of sleeves are tightly and evenly arranged on the shaft rod in a sleeved mode, and one ends of the middle steel plate and the side steel plates are connected with the sleeves. A plurality of hinged supports are evenly arranged on the concrete river surface, the sleeves are arranged in grooves in the upper ends of the hinged supports, a plurality of bases are evenly arranged on the concrete river surface, and hydraulic rod mechanisms are arranged between the middle steel plate and the bases and between the side steel plates and the bases. The middle steel plates and the side steel plates take off and land under the action of the hydraulic rod mechanism, and when the water amount is small, the drainage requirement can be met only by opening one middle steel plate or one side steel plate; when the water quantity is large, all the middle steel plates and the side steel plates can be opened, a large amount of water can be drained in a short time, and the drainage efficiency is greatly improved.

The invention discloses a wall-penetrating-free shaft-penetrating steel dam gate opening and closing device which comprises a gate body, and the bottom of the gate body is rotationally connected between two gate piers. The opening and closing mechanism comprises a rail, the rail is fixed to the gate piers and is of an arc-shaped structure, mounting arms are fixed to the two sides of the gate body correspondingly and slidably connected to the rail, and a driving assembly is mounted on the rail; the ventilation damping mechanism is installed on the side face of the gate body, a flow guide plate is installed at the top of the gate body, an airflow channel is formed in the flow guide plate in the length direction, a plurality of ventilation holes are formed in the back face of the gate body, the ventilation holes communicate with the airflow channel, and the airflow channel communicates with the ventilation damping mechanism; the mounting arm is located on the front side of the gate body. The problems of difficult sealing, easy abrasion, inconvenient maintenance and the like possibly caused by wall-penetrating and shaft-penetrating are solved, the failure rate of the device is reduced, and the maintenance cost and workload are reduced.

The utility model discloses a steel dam lock anti -collapse safety device, including steel gate, the right side of crank arm is provided with locking assembly, and the right end of support axle is provided with auxiliary support assembly, can make follow -up plate drive locking plug to move to forward side and be stuck in corresponding locking groove through the control hydraulic oil cylinder extension, and the steel gate is locked to steel gate through locking wheel and support axle to avoid the wobble collapse condition of steel gate during long -term berthing process to fixed limit rail can also be through the limit guide groove and follow -up plate limit guide, and the second reinforcing piece can improve the connection stability between locking plug and follow -up plate, to this guarantee the use stability of locking plug, through the installation support base and auxiliary support ring, can be through the extension axle and the right end of support axle auxiliary support limit, avoid the wobble condition of support axle in the use process, to this guarantee the use stability of support axle.

The invention relates to the technical field of water conservancy projects, and discloses a modular steel dam and a construction method thereof.The modular steel dam comprises a base, a plurality of prefabricated frames and a plurality of prefabricated plate bodies, the base is suitable for being fixed to bottom bed rock, the prefabricated frames are arranged at intervals in the length direction of the base, one prefabricated plate body is arranged between every two adjacent prefabricated frames, and the prefabricated plate bodies are arranged on the base; the bottom faces of the prefabricated plate bodies are connected with the top face of the base, and the multiple prefabricated plate bodies form a water blocking face. The modular prefabricated design is adopted, the multiple prefabricated frames and the multiple prefabricated plate bodies are manufactured in advance, only the base needs to be poured on site, and then the prefabricated frames and the prefabricated plate bodies are arranged on the base, so that construction of the steel dam can be completed. The construction period is greatly shortened, the manufacturing cost and the follow-up maintenance cost are reduced, the sizes and the number of the prefabricated frames and the prefabricated plate bodies are adjustable, and the length and the shape of the built steel dam can be adjusted along with changes of hydrological conditions so as to meet use requirements.

The invention relates to the technical field of water conservancy steel dam gates, in particular to a steel dam gate with a silt cleaning function, which comprises a gate body, a rotating shaft and a driving structure, and further comprises a silt cleaning structure arranged in the gate body, and the silt cleaning structure comprises a liquid spraying part and a gate body cleaning part; the liquid spraying part is arranged in the gate body and can swing outwards from the inside of the gate body to spray liquid on the surface of the gate body, and the gate body cleaning part is matched with the outer surface of the gate body for scraping silt on the outer surface of the gate body. The problem that silt accumulated on the surface of an existing steel dam gate is inconvenient to clean is effectively solved. The silt cleaning structure arranged in the sluice body is adopted, a liquid spraying part in the silt cleaning structure moves out of the interior of the containing sluice body to spray the outer surface of the sluice body, silt on the surface of the sluice body is softened, and after the silt is softened, the softened silt can be synchronously scraped through the sluice body cleaning part; and silt on the gate body can be better cleaned.

The utility model relates to the related technical field of gates, in particular to a turnover steel dam gate with double opening and closing mechanisms, which is characterized in that a buttress and a buffer seat are arranged on the surface of the steel dam gate, a hinged support is arranged on the surface of the steel dam gate, a bottom shaft and a jacking plate are arranged on the surface of the hinged support, a sliding groove is formed in the buffer seat, and a positioning rod and a tension spring are arranged on the surface of the sliding groove. A sliding seat is arranged in the sliding groove, a fillet is formed in the surface of the buffer plate, a supporting plate is arranged on the surface of the buffer plate, and a buffer hinge seat is arranged on the surface of the supporting plate; the device has the beneficial effects that the jacking plate achieves the preliminary buffering effect on the steel dam gate, the compression spring jacks the jacking plate, the situation that the speed of the steel dam gate is too large when the steel dam gate reaches the buttress is avoided, the buffering plate achieves the protection effect on the buttress and the steel dam gate, direct contact between the steel dam gate and the buttress is avoided, and the safety of the steel dam gate is improved. The round corners ensure that the buffer plates and the buttresses cannot be blocked, and the sliding seats achieve the effect of secondary buffering on the steel dam gate.

The utility model discloses a steel dam gate lifting device with a locking mechanism, which comprises a base, a gate, a pull rod and a first hydraulic cylinder are sequentially and rotatably connected onto the base, a connecting plate is rotatably connected onto the gate, and the pull rod and the first hydraulic cylinder are intersected in the length direction and are both rotatably connected with the connecting plate. The gate is provided with a limiting piece, and the limiting piece abuts against the connecting plate. The limiting piece extends out to abut against the connecting plate, so that the position of the connecting plate is relatively fixed, the load of the gate on the first hydraulic cylinder is reduced, the stability of the gate is improved, and the problem that the stability of opening and closing equipment in an existing steel dam gate is poor is effectively solved.

The invention discloses a steel dam structure for water environment treatment, and relates to the technical field of steel dam structures, the steel dam structure comprises a bearing frame, fixing plates are symmetrically and fixedly connected to the outer side face of the bearing frame, a stabilizing mechanism is fixedly connected to the bottom of the outer surface of the bearing frame, and the stabilizing mechanism comprises a fixing frame; the fixed frame is fixedly connected to the bottom of the outer surface of the bearing frame, a rail strip is fixedly connected to the inner wall of the fixed frame, a sliding sleeve is slidably connected to the outer surface of the rail strip, and a movable frame is fixedly connected to the side, away from the fixed frame, of the sliding sleeve; and an extrusion mechanism is arranged on the upper surface of the fixing frame and comprises a connecting plate, the connecting plate is fixedly connected to the upper surface of the fixing frame, the end of the connecting plate is fixedly connected with a limiting ring, and a sliding rod is slidably connected to an inner cavity of the limiting ring, so that the effect of enhancing the protection effect on the river slope under torrential water flow is achieved.

The anti-freezing device of the waterscape dam steel dam gate comprises a base, a steel dam gate body is installed on the base, a water stirring mechanism is connected inside the base, an auxiliary frame is connected to the upper surface of the steel dam gate body, and an ice breaking mechanism is installed on a lifting frame. According to the anti-freezing device of the waterscape dam steel dam gate, the arranged water stirring motor drives the first movable gear to rotate, then the water stirring rod on the rotating shaft is driven to rotate through the conveying chain, the water surface can be stirred, the water surface is kept flowing, and then the contact position of the waterscape dam steel dam gate and the water surface is prevented from being frozen; hot air in the heating box is conveyed to the air spraying frame through the air conveying pipe, then the water surface is heated through the spraying head, the water surface is prevented from being frozen, the rotating wheel is driven to rotate through the driving motor, then the pull rod is driven to move up and down, the ice surface is beaten through the ice breaking hammer, the ice surface is broken into small particles, and ice breaking is facilitated.

The invention belongs to the technical field of hydraulic engineering, and particularly relates to a novel hydraulic engineering steel dam gate hoist to solve the technical problem that the gate movement speed cannot be adjusted, and the novel hydraulic engineering steel dam gate hoist comprises a gate outer frame, a middle end boss, a gate, a matched sliding frame, a matched screw, a first transmission bevel gear, a mounting support, a power device and a threaded rotating sleeve. A middle end boss is installed on the gate outer frame, a matching sliding frame is installed on the middle end boss in a sliding mode, the matching sliding frame is fixedly installed on the gate, a matching screw rod is fixedly installed on the gate, and a middle end driving frame drives a transmission roller to move, so that the transmission position of the transmission roller between a first conical roller and a second conical roller is changed. The rotation speed output by the second transmission bevel gear is changed, the movement speed of the gate is accelerated or slowed down, and the gate can be accelerated or slowed down to close the gate outer frame or the gate can be accelerated or slowed down when the movement speed of the gate is accelerated or slowed down.

The construction method for improving the self-standing and stability of an open type shallow buried steel structure dam body island cofferdam belongs to the technical field of water conservancy and municipal engineering. In view of the defects of self-standing and stability caused by the fact that the open type steel structure dam body island cofferdam cannot be closed in a ring and the shallow buried anchoring is insufficient, the application constructs a water level natural balance initial state through reserving upstream and downstream ports, and solves the problems of insufficient shallow buried anchoring and uneven initial stress by synchronous filling. Combined with the change law of river tides, layered and collaborative filling is implemented, the sand and gravel layer is naturally compacted by using the advance and retreat of tides, and the dependence on additional ramming equipment is reduced. By reasonably controlling the filling height difference inside and outside the dam body, a compression and tension composite stress system is constructed, a self-balancing system of compression and tension composite stress is formed, and the defects of the open structure closed loop are effectively made up. The method effectively improves the self-standing and stability of the dam body, takes into account the economy and efficiency, adapts to complex geological and hydrological conditions, and is suitable for large-span and long linear construction sites.

This utility model relates to the field of steel dam gate technology, and in particular to a hydraulic steel dam gate with a sand-clearing structure. It includes a steel dam gate mechanism for sand clearing. The steel dam gate mechanism includes: a main component comprising guide rails fixed at both ends of the inner wall of a frame, with a gate slidably installed between the guide rails; and a sand-pushing component comprising a push plate located at the lower end of the inner wall of the frame, a guide frame fixed to the push plate and penetrating the frame, a shaft rotatably installed inside the outer end of the guide frame, and first hydraulic cylinders installed at both ends of the outer wall of the frame. A guide seat is fixed at the output end of the first hydraulic cylinder, and a guide groove is provided inside the guide seat, with the shaft located inside the guide groove. The sand is first pushed to the center by the sand-pushing mechanism, and then collected and removed by a flipping scraper. Automated sand clearing is achieved through hydraulic drive, ensuring no sand accumulation at the bottom when the gate is closed, thus guaranteeing sealing and avoiding motion interference, significantly improving operational reliability.

The utility model provides an inverted horizontal type steel dam which comprises a dam body, a gate, a hinge shaft and a driving mechanism, a water passing groove is formed in the dam body, one end of the gate is hinged into the water passing groove through the hinge shaft, the hinge shaft is fixedly connected to the lower end of the gate, and the driving mechanism is arranged on one side of the water passing groove. The hinge shaft penetrates out of the dam body from one side of the water passing groove and is connected with the driving mechanism. The driving mechanism comprises a rocker arm and a first driving piece, one end of the rocker arm is fixedly connected with the hinge shaft, the other end of the rocker arm is hinged to the first end of the first driving piece, and the second end of the first driving piece is hinged to the dam body. The first driving piece drives the rocker arm to rotate to drive the gate to rotate, gate angle adjustment is achieved, the first driving mechanism and the rocker arm are located on one side of the water passing groove all the time, water flowing out of the position above the gate is separated by the dam body relative to the first driving mechanism and the rocker arm, and the first driving mechanism and the rocker arm cannot be damaged; the service lives of the first driving mechanism and the rocker arm can be prolonged.

The invention discloses a steel dam water stopping device which comprises a steel dam unit arranged in a river channel and used for stopping water in the river channel. The water stopping unit comprises side water stopping assemblies arranged on the two sides of the steel dam unit and used for stopping water in the gap between the steel dam and the river channel, and a bottom water stopping assembly arranged at the bottom of the steel dam unit and used for stopping water in the transition area of the bottom of the steel dam unit and the river channel. The bottom water stop assembly is directly transited in the gap between the dam body and the bottom of the river channel, so that the gap between the dam body and the bottom of the river channel is blocked, and the whole blocking mode does not need to limit the bottom shaft through a flange of the bottom shaft and a concave notch in the upper portion of a hinged support; and the flange of the bottom shaft and the concave notch in the upper part of the hinged support are prevented from leaking water or being blocked by foreign matters such as stones.