158 results about "Floating system" patented technology

The invention belongs to the technical field of ocean detection, belongs to a multi-sensor fusion intelligent anti-collision method and system, comprises a sensing layer, a processing layer and an application layer, and provides an intelligent anti-collision and evidence recording ocean monitoring floating system integrating computer vision, target ranging, satellite positioning and ship automatic recognition system multi-sensor fusion. According to the invention, YOLOv8 target detection, Transform data fusion and a Kalman filtering algorithm are adopted, so that accurate detection and anti-collision early warning of ships and floating objects on the sea are realized. The system has an AIS failure processing mechanism and an evidence encryption storage function, and ensures reliable operation and data compliance under complex sea conditions.

The invention discloses an ultra-aeration air flotation system and an implementation method thereof, and belongs to the technical field of wet-process phosphoric acid production, and the ultra-aeration air flotation system comprises a reaction tank, an inclined guide plate arranged on the inner wall of the reaction tank, a dish-shaped tank which is arranged at the bottom of the reaction tank and is annularly arranged around the center of the reaction tank, and a central island which is formed by protruding the inner ring part of the dish-shaped tank at the bottom of the reaction tank, the aeration mechanism is arranged on the central island and is communicated with the outside through a pipeline; the transmission mechanism is arranged above the reaction tank; the central transmission rod is connected with the output end of the transmission mechanism and is arranged along the axis of the reaction tank; the dynamic settler is arranged at the upper part in the reaction tank and is connected with the central transmission rod; and the overflow port is matched with the dynamic settler. The inclined guide plate, the dish-shaped aeration structure and the dynamic settler are integrally arranged in the reaction tank, so that the super-aeration uniformity, the foam separation capacity, the phosphoric acid purification and the liquid vortex intensity in the wet-process phosphoric acid production process are remarkably enhanced, and the reaction efficiency and the product quality are improved.

The invention relates to the technical field of photovoltaic equipment, and discloses a cable-supported marine photovoltaic floating system, which comprises floating units, a cable net structure, a frame structure and a mooring structure, the cable net structure comprises longitudinal cables and transverse cables, the longitudinal cables and the transverse cables intersect to form a grid shape, and the longitudinal cables and the transverse cables intersect and are fixed in the floating units; the outer ends of the longitudinal cables and the outer ends of the transverse cables are connected with the frame structure, the frame structure is connected with the mooring structure, and the mooring structure is used for keeping pretension of the transverse cables and the longitudinal cables. According to the scheme, the longitudinal cables and the transverse cables are stressed in a face mode, a traditional point stress mode is replaced, external force can be dispersed more evenly, the local damage risk is reduced, and high fatigue resistance is achieved; the longitudinal cables and the transverse cables are fixed through the floating units, relative displacement of the longitudinal cables and the transverse cables is avoided, the integrity of the cable net structure is guaranteed, the frame structure and the mooring structure fluctuate up and down along with stormy waves and adapt to dynamic changes of the cable net structure, and the stability and durability of the whole floating type offshore photovoltaic system in the complex marine environment are guaranteed.

The invention belongs to the technical field of ocean information engineering, and discloses a joint simulation method for a structure collision effect in a floating installation process of an offshore converter station. The joint simulation method comprises the following steps: S1, setting sea condition parameters of an operation sea area and geometric parameters and material parameters of a floating system; s2, initializing a hydrodynamic model and a multi-body model; s3, solving the barge motion equation under the current time step by using the hydrodynamic model to obtain barge motion data; s4, calculating an LMU contact force and a DSU contact force under the current time step according to the barge motion data in the step S3, feeding back the LMU contact force and the DSU contact force to the hydrodynamic model, and updating the external load of the barge; and S5, repeating the steps S3-S4 until simulation in the set time step is completed, and then outputting a simulation result. According to the method, precise calculation of dynamic movement of the floating body and precise simulation of complex contact-nonlinear restoring force of the LMU can be considered, and high-precision simulation analysis of the whole floating installation process of the offshore converter station is achieved.

The invention discloses a high-precision floating system mooring adjusting device based on tension online monitoring, and relates to the technical field of floating type wind power platform mooring connection. An upper hanging frame is connected with a welding back plate through an upper rotating shaft pin and connected with a lower hanging frame through a lower rotating shaft pin, and a locking mechanism is arranged in the lower hanging frame; the tooth column penetrates through the lower lifting frame and the upper lifting frame and is locked through a locking mechanism, oil cylinders are symmetrically arranged on the two sides of the lower lifting frame, the locking mechanism integrally moves up and down through the oil cylinders, a tension monitoring mechanism is arranged at the lower end of the tooth column, and loads are monitored and measured in real time through far-end software. The tension leg wind power platform mooring line tie-back and tensioning device is high in adjustment precision and short in operation period, has the functions of reliable connection, mooring line length adjustment, self-locking and self-tightening, reverse loosening and load detection, can adjust the length of the mooring line at high precision, simplifies the tie-back and tensioning installation process of the tension leg wind power platform mooring line, and reduces the mooring and installation cost of the tension leg wind power platform.

Delivery of a high volume of floating systems for wind turbines can make floating wind economic. The delivery can involve the standard design of sections, such as “tubes” or “cans,” comprising a rolled plate and ring stiffeners. The delivery can then involve the transportation of the sections in block to an assembly site that is closer to the planned installation point. The sections are used to manufacture floating vessels, such as semi-submersibles, buoyant towers, and / or spars, at the assembly site, which can include a barge with cranes. For semi-submersibles, the delivery can then involve the installation of the Tower, the nacelle, and blades using the barge cranes. Alternatively, for spars or buoyant towers, the nacelle and blades can be installed at an off-shore location using a platform, such as a standard jack-up vessel or a crane jacket.

This application discloses a time-domain simulation method for a wave energy float model and related devices. The method includes: decomposing the wave energy float model to obtain a gravity field model, a wave energy float system model, a wave force calculation model, a buoyancy calculation model, an added mass calculation model, a damping force calculation model, a hydrostatic restoring force calculation model, and a viscous force calculation model; modeling each decomposed sub-model using OpenModelica and establishing a connection relationship between each sub-model, and solving the model using a solver. This application decomposes the wave energy float model into multiple sub-models according to potential flow theory for modeling. After physically connecting the sub-models, equations can be established. The equations are solved using a solver, greatly reducing the steps in the physical modeling process and the difficulty of solving the equations, thereby improving the reusability, reconfigurability, and scalability of the time-domain simulation method for the wave energy float model.

The invention discloses a cross-medium aircraft and belongs to the technical field of aircrafts. Comprising a power propulsion system which provides a power hybrid control system for an aircraft body and is used for realizing data acquisition and operation and accurate control of the power propulsion system, a navigation system and a sinking and floating system; the navigation system is used for providing navigation support for the vehicle body; the gradient skin is composed of multiple gradient materials and covers the outer surface of the aircraft body, and the sinking and floating system is used for controlling floating and diving of the aircraft body. According to the invention, the vehicle can obtain the optimal pneumatic / hydrodynamic performance in the air and seawater medium navigation state; according to the power propulsion system, the requirements of high speed, long distance and high thrust of the aircraft are met; a distributed network and a visual navigation system meet the navigation requirements of the cross-medium aircraft in the air, on the water surface and under the water and the combined combat; the hybrid control system is used for accurately controlling the aircraft; the aircraft application material can complete deformation adaptive to the changed environment.

According to the floating type offshore photovoltaic and valve type wave energy device integrated system, in the system, a supporting system comprises a plurality of steel frames, and a photovoltaic power generation system comprises a photovoltaic power generation panel supported on the supporting system; the floating system comprises a buoy floating on the water surface and is arranged at the bottom of the supporting system to provide buoyancy; the mooring system comprises an anchor chain connected with a buoy, a plurality of valve type wave energy devices are arranged on the periphery of the floating type offshore photovoltaic device in a surrounding mode, and a left valve body and a right valve body are connected through a hinge shaft and can rotate around the hinge shaft. The piston rod is arranged on the left valve body and slidably connected with the hydraulic cylinder, the hydraulic control cabinet is connected with the hydraulic cylinder to convert hydraulic energy into electric energy, when waves come, the left valve body and the right valve body generate relative displacement in the vertical direction to drive the piston rod and the hydraulic rod to generate piston motion, and the hydraulic energy generated by piston motion is converted into the electric energy after passing through the hydraulic control cabinet. The system improves the stability and safety of the structure.

The invention discloses a concrete floating system which comprises a concrete floating body, an embedded steel drum and a plurality of mooring chains, the lower end of the embedded steel drum is embedded in the upper surface of the concrete floating body, the end of each mooring chain is connected to the side face of the concrete floating body, and the system can adapt to the complex and changeable marine environment and is high in practicability. And the safety and the stability of the new energy equipment are improved.

The present invention relates to a buoy system, comprising: a buoy body; and an anchoring device, which is arranged below the buoy body and is used to stabilize the buoy body, and the buoy body comprises: a main cabin, at the bottom of which the anchoring device is arranged; a mast, which is arranged above the main cabin; a plurality of brackets, which surround the side of the main cabin; and a plurality of outer wall components, which are fixed on the brackets and fixed on the outer side of the main cabin, and form a closed floating chamber with the brackets and the side of the main cabin. The present invention realizes structural modularization, simplifies the production process, and is convenient for transportation and loading and unloading. It can be deployed and recovered by small and medium-sized fishing vessels and engineering ships, reducing the cost of using ships, and optimizes its internal space structure. A variety of equipment can be installed in the buoy to meet monitoring requirements.

The utility model relates to a movable operation and maintenance ship berthing and net cage adding culture system. The method is suitable for the offshore wind power technical field. According to the technical scheme, the device comprises a fan single-pile foundation, a movable rubber ring, a net cage and a concrete frame; the concrete frame is arranged on a seabed around the fan single-pile foundation, the multiple layers of movable rubber rings are arranged at different heights of the fan single-pile foundation in a sleeving mode, and net cages are arranged between the adjacent movable rubber rings and between the movable rubber ring on the lowest layer and the concrete frame respectively. The inner sides of the multiple layers of movable rubber rings are connected through rubber ring inner side supporting beams, the outer sides of the multiple layers of movable rubber rings are connected through rubber ring outer side supporting beams, the net cage is of a flexible telescopic structure, the movable rubber rings, the net cage, the rubber ring outer side supporting beams and the rubber ring inner side supporting beams form a floating system, and the floating system moves up and down along the fan single-pile foundation. And the bottom is fixed on the seabed through a net cage connecting concrete frame.

The application discloses a hydrogen fuel cell unmanned aerial vehicle for quickly deploying offshore charging and belongs to the technical field of unmanned aerial vehicles. The hydrogen fuel cell unmanned aerial vehicle comprises an unmanned aerial vehicle body frame, a hydrogen fuel cell assembly is arranged below the unmanned aerial vehicle body frame, the hydrogen fuel cell assembly comprises a hydrogen fuel cell bin and a hydrogen cylinder, a hydrogen cylinder mounting mechanism is arranged below the hydrogen fuel cell bin, the hydrogen cylinder mounting mechanism comprises symmetrically-arranged cylinder connecting arms, hollow cylinder fixing devices are arranged on both ends of the cylinder connecting arms, cylinder placing port covers are arranged on the cylinder fixing devices on both ends of the cylinder connecting arms on one side, and the cylinder placing port covers are hinged to both ends of the cylinder connecting arms on one side, respectively. The technical scheme is used to solve the problem that offshore communication equipment cannot respond in time, and the problem that when an unmanned aerial vehicle is used for energy supplementing operation at sea, an additional floating system needs to be arranged, so that the weight of the unmanned aerial vehicle is large and the endurance of the unmanned aerial vehicle is short.

The invention discloses an umbrella ladder system modeling optimization method and system based on mechanics and parameter optimization, and relates to the technical field of wind power generation modeling. The efficient umbrella ladder system modeling and optimizing method is provided by combining mechanical analysis and a parameter optimization algorithm, and the performance and reliability of a high-altitude wind energy capturing system are remarkably improved; a CPO optimization algorithm is adopted to carry out dynamic parameter optimization on a floating system and an acting system under the multi-constraint condition, and the output power is maximized on the premise that buoyancy balance, rope speed limitation and parachute area constraint are met. Through dynamic updating of an adaptive learning rate adjustment mechanism and a trust region radius, the algorithm can rapidly converge to an optimal solution, the common problem of local optimum or constraint violation in a traditional optimization method is avoided, the method can adapt to changes of wind conditions of different heights, the system can be effectively prevented from overturning, and long-term stable operation is guaranteed.

A self-contained emitter assembly according to one embodiment is provided to generate and emit X-rays underwater for facilitating X-ray imaging. The self-contained emitter assembly may be operable by a user underwater and may include a float system to provide at least one of neutral buoyancy or negative buoyancy.

The construction method of the splicing device for erecting the H-shaped steel beam of the semi-floating system comprises the steps that the temperatures of different positions on the flange and the web plate are obtained in real time, a two-dimensional temperature distribution matrix between the temperatures and position coordinates is constructed, the temperature difference of the different positions is converted into a geometric deviation trend, and a gap deviation reference matrix is obtained. And carrying out gap correction on the offset target of the gap offset reference matrix through the splicing device so as to output a corrected splicing state. And when the corrected splicing state meets the preset gap requirement, the splicing joints are locked through connecting pieces. And the locked splicing nodes are subjected to stress re-checking, and when the stress re-checking of the splicing nodes is qualified, the splicing device is transferred to non-splicing nodes. Wherein the splicing device comprises an electric jackscrew and a hydraulic wedge block, the electric jackscrew is used for conducting longitudinal compensation on an offset target, the hydraulic wedge block is used for conducting transverse compensation on the offset target, and the technical problem that manual adjustment is not timely under the temperature difference effect is solved.

The invention discloses an automatic measurement device for a bearing clearance of a passenger train wheel set, belongs to the technical field of bearing clearance measurement, and aims to solve the problems of insufficient automation degree and frequent manual intervention of the conventional measurement device. Floating systems capable of adjusting the positions of the wheel sets are arranged on the two sides of the interior of the base, guide rails allowing the wheel sets to move are installed in the surface of the base, and clearance detection structures for detecting bearings installed at the ends of the wheel sets are arranged on the portions, on the side faces of the floating systems, of the base; the clearance detection structure drives a measurement mounting frame to slide through a movable cylinder, and full-flow automation of clearance measurement is realized by combining bearing jacking of a jacking cylinder, pressing of a pressing plate of an upper cylinder and real-time data acquisition of a measurement sensor; the arrangement of the guide wheel and the motor can drive the bearing in the wheel pair to rotate, thereby guaranteeing the 360-degree comprehensive detection of the bearing clearance, and improving the measurement precision and efficiency.

The present invention provides a cable adaptive telescopic floating system, comprising a plurality of floating units sleeved on the cable, wherein a cavity is arranged in the floating unit, a block is arranged in the cavity, one end of the block is connected to the inner wall of the cavity through a spring and a damper, the other end of the block is arc-shaped and is provided with a plurality of slip rings, and the cable is movably arranged in the slip ring. A block is arranged in the floating unit of the present invention, and the block is connected to the inner wall of the cavity through a spring and a damper, so that the cable connected to the block can adaptively adjust the length of the cable according to the change of the water level on the water surface, and reduce the influence of strong winds and waves on the force of the cable, so as to ensure the connection reliability at the cable joint. Compared with the traditional S-shaped laying method, it can significantly save the number of floating bodies, save the cable line corridor, improve the laying aesthetics, and do not need to increase additional labor costs.

To provide a method for maintenance of a wind turbine supported by an offshore structure.SOLUTION: A structure (2) comprises a wind turbine (20) and at least one vertical shaft (4). A method comprises using an auxiliary floating system (1). The auxiliary floating system (1) comprises at least one floating element (5) that remains partially submerged as a result of maintenance work for the offshore structure (2), at least one connecting structure (7) that is connected to the structure (2) keeping the system (1) floating, a contact element, and a fastening element. The fastening element is fixed to the connecting structure (7), which is intended to rigidly connect the system (1) to the shaft (4). To gain an advantage, with the rigid connection, the maintenance work for the offshore structure (2) can be carried out in an efficient and safe manner for the sake of a maintenance worker and the system involved in the work.SELECTED DRAWING: Figure 4

A row crop header for harvesting crop in a field comprises a header frame having a center section and a pair of side wing sections operatively coupled to the center section. An upper link is pivotally coupled between the center section and each one of the side wing sections adjacent the top portion thereof. A lower link is pivotally coupled between the center section and each one of the side wing sections adjacent the bottom portion thereof. The upper links and lower links provide independent pivotal movement of the side wing sections relative to the center section to contour to the surface of the field of crops to be harvested. An automatic float system is operatively coupled between the center section and each one of the side wing sections to adjust the weight of the side wing sections on the surface of the field and allow the side wing sections to float relative to the center section.

The present invention discloses a method for realizing the planar layout of a water surface photovoltaic floating array, belonging to the technical field of water surface photovoltaic planar layout design; the method comprises the following steps: determining the structural type of a water surface photovoltaic floating system; constructing an environmental load prediction model for a water surface photovoltaic floating array; establishing a constraint equation for the layout area of ​​the floating array, solving the constraint equation using an iterative method to obtain the maximum theoretical area of ​​a rectangular array; calculating the anchor cable force of a typical zigzag array and the anchor cable force of a rectangular array formed after filling the zigzags, introducing an anchor cable force amplification coefficient into the rectangular array area constraint equation to obtain the maximum number of rows and columns of the zigzag array; and determining the final planar layout scheme based on the project site conditions and the project installed capacity. The present invention maximizes the layout area of ​​a single water surface photovoltaic floating array by constructing an environmental load prediction model and a layout area constraint equation for a water surface photovoltaic floating array, and calculating the anchor cable force and anchor cable force amplification coefficient of a typical zigzag array.

The invention provides an anti-floating system of a municipal pipeline and a construction method of the anti-floating system. The anti-floating system comprises a flexible environment response weight increasing module. The flexible environmental response weight increasing module is arranged outside the municipal pipeline and covers the top and / or the side part of the municipal pipeline, and the flexible environmental response weight increasing module is provided with a gradient permeation structure; when dry and not in contact with underground water, the flexible environmental response weight increasing module has a first weight and is flat and bendable; and after the flexible environment response weight increasing module makes contact with and absorbs underground water, the flexible environment response weight increasing module is subjected to phase change and forms a flexible balance weight module, the flexible balance weight module has second weight, the second weight is larger than the first weight, active locking force is applied to the municipal pipeline through the flexible balance weight module, and anti-floating of the municipal pipeline is achieved. According to the scheme, natural power of underground water level rising is utilized to trigger water absorption evolution and self-adaptive sharp weight increasing of the anti-floating system, so that the overall weight of the municipal pipeline is increased, and then the anti-floating performance and long-term stability of the municipal pipeline are improved.

The invention discloses a building underground water passive maintenance-free anti-floating system and a construction method.The system comprises a fertilizer groove formed in the periphery of a building, a water seepage layer, waterproof geotechnical cloth and a backfilling layer are sequentially backfilled in the fertilizer groove from bottom to top, and a passive drainage pipe is arranged in the water seepage layer; the passive drainage pipe forms a closed loop around the periphery of the building, small holes for water permeation are formed in the passive drainage pipe, the passive drainage pipe has a drainage slope, an outlet pipeline is connected to the lowest point of the drainage slope, and the outlet pipeline is connected to a preset drainage point; a plurality of dewatering wells with the bottom ends extending to the position below a structural bottom plate of the building are arranged in the fertilizer groove in the circumferential direction of the fertilizer groove at intervals, the dewatering wells are filled with water seepage layers, and the upper ends of the dewatering wells are located below the passive drainage pipe. The anti-floating system achieves the long-term, stable and maintenance-free anti-floating effect of the structure, and has the advantages of being easy and convenient to construct, low in cost, free of maintenance and the like.

The application discloses a kind of material receiving hopper floating force control valve groups, floating system, control method and compound mixer, the control valve group of the present application is connected by electric proportional pressure reducing valve operating port No. Rod cavity of the cylinder to be controlled, the rod cavity of the cylinder to be controlled is connected back oil, realizes to the control of oil cylinder thrust.The compound mixer material receiving hopper floating system, the up-and-down movement of compound mixer material receiving hopper is controlled by oil cylinder piston rod, both ensure that the tire of supporting wheel rolls along with vehicle driving, and realize the profiling movement of supporting wheel along with the change of terrain.

A fishing float system and control method, comprising a float module and a mobile terminal, wherein; the float module comprises a waterproof shell and an electronic cabin, the electronic cabin is arranged inside the waterproof shell, the waterproof shell is used to avoid the electronic cabin from being flooded; the electronic cabin is provided with a main control module, a Bluetooth, a motion sensing module, a visual feedback module and a power module, wherein; the main control module is electrically connected with the Bluetooth; the main control module is electrically connected with the motion sensing module, and the motion sensing module is used to sense the motion state of the float; the main control module is electrically connected with the visual feedback module, and the visual feedback module is used to send light signals according to the fish condition; the power module is used to supply power for the main control module; the mobile terminal is communicatively connected with the mobile terminal through the Bluetooth, and is used to receive fish condition event information.

The invention belongs to the technical field of helicopter safety design, and discloses a helicopter emergency floating system buoy cabin safety analysis method and system, and the method comprises the following steps: precisely determining a severe working condition and an aerodynamic state at a buoy cabin according to the flight working condition of a helicopter; according to the severe working condition and the aerodynamic state of the buoy cabin, the buoy cabin cover and the connecting strength of the buoy cabin cover are subjected to stress analysis and checking; carrying out buoy cabin deformation simulation calculation analysis to obtain buoy cabin deformation; carrying out air blowing and buoy cabin strength test examination under a harsh flight working condition; a buoy inflation expansion test is carried out, and the buoy cabin deformation condition is actually measured; installing a buoy cabin on the helicopter, and carrying out flight test system verification. The problem that deformation characteristics and pneumatic safety of the hard buoy cabin are not systematically analyzed is solved.

This invention relates to the field of underground structure engineering technology, specifically to an active-passive combined anti-buoyancy system and control method for underground structures. The system includes a pressure sensor array, an adjustable one-way pressure relief valve, and a cloud platform controller. The pressure sensor array is used to periodically collect water pressure data at different locations on the foundation of the underground structure and feed it back to the cloud platform controller. The adjustable one-way pressure relief valve is used to perform drainage operations. The cloud platform controller receives the water pressure data from the pressure sensor array, combines the passive anti-buoyancy bearing capacity of the structure with the buoyancy force experienced by the structure at various locations in the current state, performs a combined anti-buoyancy calculation, obtains the resistance effect ratio within the underground structure range, and controls the opening degree of the adjustable one-way pressure relief valve. This invention can regulate the water pressure level of underground engineering in real time, and by analyzing the structural bearing capacity margin in real time, it can ensure the structural anti-buoyancy safety while reducing drainage volume.

The invention belongs to the technical field of intelligent monitoring, and particularly relates to a mountainous area building underground structure water control anti-floating system based on intelligent monitoring, which comprises a multi-mode sensing module, an AI-driven prediction decision module and an edge-cloud cooperative control module, four-dimensional synchronous monitoring of the underground water level, the water pressure, the seepage direction and structural deformation is achieved through the multi-mode sensing module, an underground water level-geology-weather coupling prediction model is constructed through the AI-driven prediction decision module, a water level change curve and an anti-floating safety coefficient in the future 72 hours can be accurately output, a reliable basis is provided for system control, and the system reliability is improved. And secondly, the edge-cloud cooperative control module realizes data preprocessing through an edge computing node, a cloud platform operates a multi-objective optimization algorithm, a drainage pump start-stop threshold value and a seepage control valve opening degree are dynamically adjusted, energy consumption, drainage efficiency and underground water level fluctuation amplitude are optimized, and the overall operation efficiency of the system is improved.

The invention discloses a reflective film and its preparation and application in a water-surface floating reflective buoy. A reflective film is prepared from the following raw materials in weight ratio: 55%-78% high-density polyethylene resin, 5%-10% linear low-density polyethylene, 1%-5% antioxidant, 0.03%-0.1% anti-ultraviolet additive, 10%-20% microprism, and 5%-10% plasticizer; the microprism is surface-treated with vinyl triethoxysilane. The reflective buoy film of the invention adopts an extrusion process, and by welding a reflective film layer on the surface of the buoy, the reflectivity of the water-surface bearing buoy is improved, thereby improving the power generation efficiency of the water-surface floating system.

The application discloses a kind of building groundwater passive maintenance-free anti-floating system and construction method, system includes being arranged in the building perimeter of fat groove, the fat groove is filled with water-permeable layer, water-stop geotextile and backfill layer from bottom to top in sequence, passive drainage pipe is equipped in the water-permeable layer, the passive drainage pipe is formed closed loop around the building perimeter, the passive drainage pipe has small hole for water permeation on, and passive drainage pipe has drainage slope, and outlet pipe is connected at the lowest point of drainage slope, outlet pipe is connected to predetermined discharge point;Fat groove is equipped with the dewatering well of bottom end extending to the structure bottom plate below of building, multiple are arranged along the circumference of fat groove in dewatering well, dewatering well is filled with water-permeable layer, and the upper end of dewatering well is located below passive drainage pipe.This application realizes the long-term, stable, maintenance-free anti-floating effect of structure, and the system has the advantages of simple construction, low cost, maintenance-free and the like.