84 results about "Land acquisition" patented technology

The invention discloses a GIS-based traffic project land expropriation and demolition digital management system and method, and particularly relates to the technical field of geographic information intelligent monitoring. NDVI vegetation features of satellite images and a building contour feature map of unmanned aerial vehicle data are extracted respectively, unified geographic projection conversion is carried out in combination with a sensor coordinate flow, and the data of the NDVI vegetation features and the building contour feature map are acquired; setting a cross-modal feature alignment mechanism driven by an adversarial network, extracting multi-scale space correlation features through wavelet transform, dynamically generating a space-time consistency compensation coefficient in combination with a sensor displacement vector, and realizing centimeter-level precision multi-source data adaptive fusion by using a dynamic weight fusion model; the spatial distance between a boundary post and a demolition red line is calculated in real time through a ray tracing algorithm, a dynamic safety threshold is generated in combination with a historical dispute rate, the defect of delay of traditional static threshold early warning is broken through, and the bottleneck problems of precision and timeliness in land acquisition and demolition management are solved by constructing multi-source geographic data fusion and dynamic early warning.

The invention relates to the field of water conservancy and hydropower engineering construction land acquisition and physical index investigation, in particular to a method and a system for quickly generating a mountainous area riverway type reservoir inundation area based on a high-precision DEM (Digital Elevation Model), and aims to solve the problems of poor reservoir inundation area generation precision, long time consumption and large personal error in the prior art. The method comprises the following steps: acquiring or generating a reservoir reach DEM, a river section line and a water return meter, and preprocessing; expanding section lines to divide river channel units; calculating a grid water level based on inverse distance weighting interpolation, and comparing the grid water level with DEM elevation to determine a submerged area grid; and generating a closed surface domain through boundary tracking and smoothing processing, and combining to obtain a whole submerged region. The method gives consideration to efficiency and precision, supports second-level dynamic generation of multiple schemes, improves analysis precision and efficiency, is suitable for mountainous river type reservoirs, and provides data support for scheme comparison and selection and object investigation.

The invention discloses a physical index statistical method for generating a reservoir inundation range based on a digital elevation model. The method comprises the following steps: obtaining three-dimensional information data in a topographic map; obtaining an original digital elevation model by using the three-dimensional information data; performing section encryption on a local section interval in the original digital elevation model to obtain a local section encryption interval, and calculating a backwater section elevation corresponding to a backwater meter of the local section encryption interval; correcting the local section encryption interval by using the gradient data to obtain a corrected digital elevation model; and generating a design flood inundation line of each water level by using the corrected digital elevation model, obtaining each inundation water level and an inundation range of each flood standard, and then carrying out real object index statistics. According to the method, the topographic features of important ground features are fully considered, the drawing precision of different object submerging range lines is greatly improved, and the efficiency and precision of water conservancy and hydropower engineering construction land acquisition immigrant real object index statistics are remarkably improved.

The utility model provides a lattice type tower pile-cylinder combined foundation. The lattice type tower pile-cylinder combined foundation comprises a cylinder-shaped foundation, pile bodies, connecting rods and connecting assemblies. The multiple pile bodies are evenly arranged in the circumferential direction of the cylindrical foundation. The connecting rods are in one-to-one correspondence with the pile bodies, the connecting rods are mounted on the pile bodies, and the other ends of the connecting rods are mounted on the cylindrical foundation; the connecting assembly is connected with the upper end of the pile body and a bottom supporting rod of the lattice type tower. Load of the barrel-shaped foundation is transmitted to the pile bodies on the periphery through the connecting rods, the pile bodies provide large anti-bending bearing capacity for the barrel-shaped foundation, and the burial depth of the barrel-shaped foundation is reduced. And therefore, the lattice type tower can be supported and fixed by adopting one barrel-shaped foundation, and the problems that the lattice type tower has high requirements on the bearing capacity of the foundation and the land acquisition area is large are solved.

The invention provides a microbial carrier for sewage treatment based on red mud improvement, which is characterized in that the physical structure of red mud with the water content of 40-45% is primarily modified, and then the primarily modified red mud is alkalized by using a sodium hydroxide solution to obtain red mud improvement powder meeting the requirements of the invention; adding sodium carboxymethyl cellulose, spiral shell powder and distillers' grains according to a ratio, uniformly mixing, grinding the mixed material, processing particles by using a traditional Chinese medicine pelleting machine, and naturally airing to obtain the red mud improved microbial carrier for sewage treatment. The invention provides a method for preparing a sewage treatment microbial carrier based on red mud resourceful improvement aiming at the technical problem and the practical problem of upgrading and dilatation of a sewage treatment plant, and can effectively solve the problems of difficulty in water quality standard reaching, difficulty in land acquisition, high construction cost and the like of an old sewage treatment plant.

The present application relates to a kind of fishing oil layer casing open hole sidetracking method, belong to petroleum drilling completion technical field.The specific steps are as follows: for the characteristics of different types of reservoir, establish fine geological model, quantitatively study the distribution of remaining oil;The oil layer casing is taken out from downhole, surface casing is retained, while introducing navigation gyroscope not affected by magnetic interference, avoid random windowing state in downhole;From the wellhead, use special tools to complete one windowing, repair window;According to the lithology and trajectory control requirements, select drilling assembly and directional tool, use wireless drilling instrument or wired drilling instrument, scientific control full angle change rate, accurately control well trajectory, new oil layer casing is lowered in the surface casing below the original wellbore.According to different types of reservoir, formulate targeted sidetracking completion method.The present application utilizes existing resources, reduces capital investment, mainly reduces drilling footage, utilizes existing ground pipe network and equipment, reduces land acquisition and other tedious work.

The invention discloses a triangular support type steel rib-steel tube concrete truss tower which comprises a fan, a steel tower section, a switching section, a truss section and an independent foundation, the independent foundation is fixed to the ground through foundation bolts, the truss section is arranged on the independent foundation and is a triangular support truss type tower, and a supporting assembly is arranged in the independent foundation. According to the invention, the triangular support is adopted, so that the torsional property of the structure is better; the corner columns are made of steel pipe-steel reinforced concrete, so that the rigidity is increased, and meanwhile, the steel consumption is reduced; the independent foundation reduces land occupation area and saves land acquisition cost; steel ribs are added into the steel pipes and concrete is poured, the inner and outer steel pipes can be used as construction formworks, and the concrete surface quality problem in the demolding process is avoided; the stability and the tensile property of the structure are improved through double prestress tensioning, and meanwhile it is guaranteed that concrete cannot crack; truss section members are all produced in factories, and spare parts are transported to the site for installation, so that the construction efficiency is remarkably improved, and the construction quality is ensured.

The invention discloses an engineering immigrant land investigation method, system and device, and relates to the technical field of land investigation, and the method comprises the steps: obtaining a land orthoimage and land three-dimensional point cloud data obtained by photographing a land in a land acquisition range through an unmanned aerial vehicle, and taking the land orthoimage and the land three-dimensional point cloud data as input, identifying land types of the land in the land acquisition range by using the trained land type identification model, generating a GIS file, obtaining a land position input instruction, identifying the land of the ownership in the GIS file based on the land position input instruction, obtaining an identified GIS file, and storing the identified GIS file in a database; based on the identified GIS file, a land survey table of the land of the ownership is generated, and the ownership carries out electronic signature in the land survey table. According to the method, the engineering immigrant land investigation work can be efficiently and accurately carried out.

This application relates to the field of track devices and discloses a maglev vehicle track structure, comprising: a conventional maglev track including a conventional track beam and a stator mounting base disposed on the conventional track beam for mounting a conventional long stator; sliding surfaces are provided on both sides of the top surface of the conventional track beam, and guide surfaces are provided on both side walls of the conventional track beam to guide the conventional vehicle; and a superconducting maglev track including superconducting track beams located on both sides of the conventional track beam; guide running surfaces are provided on the upper part of the side walls of the superconducting track beams to support the guide wheels of the superconducting vehicle; each superconducting track beam is provided with a coil mounting slot for mounting coil assemblies that cooperate with the superconducting vehicle to achieve levitation guidance and traction functions. This track structure, compatible with both conventional and superconducting maglev on the same line, improves land utilization and reduces land acquisition investment; it can meet the testing and operation needs of both conventional and superconducting vehicles, improving track utilization; and the shared equipment between conventional and superconducting vehicles reduces construction costs.

The invention discloses a project planning and site selection method based on available land analysis and land development cost estimation, and the method comprises the steps: carrying out the land current situation analysis of land parcels to be selected one by one, i.e., carrying out the spatial overlay analysis of the screened land parcels to be selected meeting conditions and the land utilization current situation data of adjacent years, analyzing the land current situation of each land parcel, and carrying out the calculation of the land development cost of each land parcel; comprising the following steps: further analyzing the areas and proportions of cultivated land and forest land for the agricultural land, estimating the land cost based on the land current situation analysis result of a to-be-selected land parcel, and calculating the land cost according to the agricultural land area, the cultivated land area, the forest land area and the current policy. According to the method, cultivated land purchase indexes and capital costs required for land acquisition compensation are estimated, land parcels to be selected are sorted according to different dimensions such as occupied cultivated land areas, land capital costs, landforms and the like, government departments can conveniently check land element input-output ratios and land performance evaluation, and the pertinence of investment attraction and the efficiency and accuracy of project planning and site selection are improved.

This invention belongs to the field of demolition cost assessment technology, specifically disclosing a method for assessing railway route selection and land acquisition costs based on a big data model. The method includes the following steps: constructing a graphical database and a core land acquisition database; acquiring policy-related land acquisition documents and dynamic data for the target area; creating an external database; identifying key factors affecting land acquisition costs; constructing a big data prediction model for land acquisition costs; training the model; and integrating it into a railway route selection design system. When inputting or modifying route plans in the route selection design system, the system calls the big data prediction model for land acquisition costs in real time. Based on the geometric parameters and spatial location of the route, it dynamically calculates and feeds back the corresponding land acquisition cost prediction results, adjusting the route plan until cost control requirements are met. This technical solution achieves dynamic and accurate assessment of land acquisition costs through the deep integration of multi-source heterogeneous databases and a big data prediction model.

The present invention provides an integrated water, wind, light and energy storage multi-energy complementary green and intelligent power station, which includes a hydropower project, a wind farm project, a solar power generation project, a compressed air energy storage project, an intelligent monitoring device, a state online monitoring system and a power station intelligent operation and dispatch platform; the wind farm, solar power generation and compressed air energy storage projects make full use of the land acquisition, water source, buildings, roads inside and outside the site, transmission systems, etc. of the hydropower project for layout, and carry out planning, construction, operation and maintenance synchronously to achieve intelligent construction and intelligent operation. The real-time power generation of each power generation project is bundled and sent to the power system or consumed within the power station, and the electricity consumption with insufficient energy storage operation is uniformly input by the power system. It can save land and water resources, save construction and production management costs such as civil engineering and equipment facilities, increase power generation benefits, improve the utilization rate of the transmission system, reduce the impact of wind and light power generation volatility, and reduce the power system reserve, and has broad guiding and popularization significance.

The invention relates to the technical field of electric energy physical energy storage systems, in particular to a novel energy storage system combining liquefied compressed air energy storage and pumped storage, and belongs to the technical field of electric energy physical energy storage systems. The energy storage system comprises an air compression subsystem, a turbine expansion power generation subsystem, a low-temperature pumped storage subsystem, a heat storage subsystem and a cold storage subsystem. Liquefied air is used as a medium, the pumped storage technology and the compressed air energy storage technology are effectively combined, the capacity of the novel energy storage system can be increased, the construction investment and land acquisition and immigrant cost are greatly reduced, and the influence on the environment and the site selection requirement are reduced.

The invention provides a compressed air energy storage power station which comprises a compression energy storage system, a heat storage and exchange system, an air storage system, an expansion energy release system, a water supply system, a cooling facility and other auxiliary systems. The compressed air energy storage power station is built by utilizing temporary buildings, construction factory facilities, power transmission equipment facilities and roads inside and outside the field of the hydropower engineering, the installed capacity is comprehensively determined according to the total available conditions of the hydropower engineering and the power grid requirements, and the compressed air energy storage power station and the hydropower engineering are jointly operated. According to the invention, watercourse tail water of hydropower engineering and abandoned temporary buildings and construction factory facilities are fully utilized, power transmission equipment facilities and roads inside and outside the field are shared, the problems of land acquisition, immigrant settlement and water sources are solved, and the construction and production management costs of engineering civil engineering, equipment facilities and the like are reduced. Meanwhile, through combined operation with hydropower engineering, electric energy is bundled and sent out, power generation benefits are increased, the utilization rate of a sending-out system is improved, and standby of a power system is reduced.

This invention relates to the field of land acquisition and physical indicator surveys for water conservancy and hydropower engineering construction, specifically to a method and system for rapidly generating inundation areas of mountainous river-type reservoirs based on high-precision DEMs. It aims to solve the problems of poor accuracy, long processing time, and large human error in existing technologies for generating inundation areas. The method includes: acquiring or generating the reservoir river section DEM, river cross-section lines, and backwater meters, and preprocessing them; expanding the cross-section lines to divide the river into units; calculating the grid water level based on the inverse distance weighted interpolation method and comparing it with the DEM elevation to determine the inundation area grid; generating closed surface regions through boundary tracing and smoothing, and merging them to obtain the entire inundation area. This method balances efficiency and accuracy, supports dynamic generation of multiple schemes within seconds, improves analysis accuracy and efficiency, and is suitable for mountainous river-type reservoirs, providing data support for scheme comparison and physical surveys.

The invention provides a water-wind-light-storage integrated multi-energy complementary green intelligent power station which comprises a water-power project, a wind power plant project, a solar power generation project, a compressed air energy storage project, an intelligent monitoring device, a state online monitoring system and a power station intelligent operation scheduling platform. A wind power plant, a solar power generation project and a compressed air energy storage project make full use of layout of land acquisition, water sources, buildings (structures), roads inside and outside the plant, a sending-out system and the like of a hydropower project, planning, construction and operation maintenance are synchronously carried out, and intelligent construction and intelligent operation are achieved. The real-time power generation amount of each power generation project is jointly bundled to be sent out to the power system or absorbed in the power station, and the power consumption with insufficient energy storage operation is uniformly input by the power system. Land and water resources can be saved, construction and production management costs of civil engineering, equipment facilities and the like are saved, power generation benefits are increased, the utilization rate of a sending-out system is improved, the influence of wind and light power generation volatility is reduced, power system standby is reduced, and the method has wide guidance and popularization significance.

The invention belongs to the field of river and lake sludge treatment and comprehensive utilization, and discloses a river and lake sludge in-situ curing treatment method for a dam foundation of a hydraulic structure, which comprises the following steps: building earth rock cofferdams at the upstream and downstream of the dam foundation, and driving steel sheet piles into the cofferdams; river and lake open water is led away through the water diversion channel; foundation pit retaining walls are built at the downstream slope toe of the upstream cofferdam, the upstream slope toe of the downstream cofferdam and the upstream slope toes of the embankments on the two sides; curing the dam foundation sludge surrounded by the retaining wall in situ by adopting a supercharged vacuum preloading method; and the solidified dam foundation is subjected to vibro-replacement gravel pile or immersed tube gravel pile reinforcement and compaction treatment, and the requirement for the bearing capacity of the dam foundation is met after treatment. According to the method, the river and lake sludge is comprehensively utilized, the sludge is solidified into the dam foundation of the hydraulic structure on site, a series of problems of outward transportation of the river and lake sludge, land acquisition and storage, sludge treatment and the like are effectively solved, meanwhile, a large amount of cost can be saved, the ecological environment is protected, economic benefits and social benefits are remarkable, and new quality productivity is effectively improved.

The present invention provides a method for arranging a quarry that takes into account the layout of a switch station. The quarry is arranged within a reservoir layout area and is characterized in that: a wide quarry road is provided at an elevation above the water level in the quarry. The width of the wide road matches the width required for arranging switches. The road is used to arrange the switch station after the quarry is mined. The switch station leads the line through a cable hole. A cable hole is provided in the mountain of the quarry. The cable hole and the switch station are on a plane, intersecting vertically or at a large angle close to vertical, which facilitates the layout of the cable. The present invention reserves a wide road at an elevation above the water level that is convenient for arranging connecting roads, and arranges the switch station, thereby solving the problem of difficult site selection for the switch station when constructing a pumped storage power station in a mountainous canyon area. At the same time, the combined arrangement of the two can save a large amount of costs such as excavation, slope support, drainage interception, roads, land acquisition and resettlement, greatly saving project investment, saving land resources, and reducing damage to the ecological environment.

The invention relates to the technical field of fish migration in water conservancy and hydropower engineering, in particular to a framed bent supporting structure for fishway engineering of a hydropower station, which comprises an engineering foundation part for providing a supporting foundation; the fishway part comprises a fishway side wall which is arranged above the engineering foundation part and used for forming a fishway aqueduct, and the fishway aqueduct is used for providing a fishway with the height increased during fish migration; the hydropower station fishway project adopts a framed bent supporting structure, and is suitable for construction of a hydropower station fishway in a mountainous area with wide land acquisition range, large slope excavation volume, high environmental protection requirement and strict ecological red line control; the occupied area of a project and the slope excavation scale are effectively reduced, the water and soil loss phenomenon is relieved, and the ecological environment of a sensitive area can be effectively protected; the scheme of proper slope ratio and circling design is adopted, the elevation of the fishway is increased through the framed bent supporting structure, the continuity and comfort of a fish migration channel are facilitated, and the requirement for fish upstream migration in the high-altitude mountainous area can be met.

1. Name of the product of this design: Computer with AI large-scale intelligent question-and-answer graphical user interface. 2. Purpose of this design product: used to run programs and display information. 3. The key design features of this design product lie in the interface content of the graphical user interface displayed on the computer, which is an existing design. 4. The picture or photo that best illustrates the key points of the design: main view. 5. The computer is of existing design, and the rear view, left view, right view, top view, and bottom view are omitted. 6. Purpose of the graphical user interface: used to display the reply content and the original text of the references. 7. Human-computer interaction mode of the graphical user interface: Click the "What is the physical survey of land acquisition and resettlement for water conservancy and hydropower projects?" button on the main view interface to jump to the change state diagram 1; click the "View original text" button on the change state diagram 1 interface to jump to the change state diagram 2.

The application discloses a kind of bauxite residue precision drying method and system of yard in situ redundancy design, it is related to industrial solid waste treatment and resource technology field, including bauxite conditioning pretreatment, mechanical deep pre-dewatering stage, yard in situ redundancy controllable natural airing stage and double-layer heat preservation greenhouse redundancy deep drying stage.The advantages are that all operations are completed in the existing hard area of bauxite residue yard, zero additional land acquisition, the energy system is mainly based on natural wind and solar energy, mechanical electric energy, and industrial low-temperature waste heat is only used as an emergency auxiliary in extreme weather, with the advantages of strong production capacity guarantee, small drying quality fluctuation, low energy consumption and adaptation to full-element high-value recovery.

The invention relates to a method for generating a power plant general layout plan and design description through a generative artificial intelligence technology, and the method is characterized in that the method comprises the following steps: (1) generating an artificial intelligence model; (2) collecting external interface data; (3) generating a design product; and (4) generating a design description. Compared with the prior art, the automatic design and report writing process can be achieved through the artificial intelligence technology, so that efficiency is improved, human errors are reduced, layout design can be carried out according to input parameters, requirements and constraint conditions through the artificial intelligence technology, the optimal layout scheme is found through scheme comparison and selection, and the design efficiency is improved. Therefore, the land area in the plant enclosing wall is compressed to the maximum extent, the land acquisition cost is reduced, or enough space is reserved for subsequent project reconstruction and expansion. And the writing style can be unified.

This invention relates to the field of bridge engineering technology, specifically to a bridge pile foundation construction method. By utilizing culverts to drain river water and constructing earthen embankments to provide a construction site for bridge pile foundation construction, a large amount of earthwork can be effectively reduced. Furthermore, this method has a simple construction process and does not require additional temporary land acquisition to build access roads or bridges, thus effectively reducing construction costs.

The application discloses a kind of steel bone-concrete filled steel tube truss tower of triangular support, including fan, steel tower section, adapter section, truss section, independent foundation, independent foundation is fixed on ground by foundation bolt, truss section is set on independent foundation, truss section is set as triangular support truss tower, and support assembly is arranged in independent foundation.The application is triangular support, and the structure torsional performance is more optimal;Corner column uses steel pipe-steel bone concrete, increases rigidity while reducing the amount of steel;Independent foundation reduces land occupation area, saves land acquisition cost;Steel pipe is added with steel bone and grouting concrete inside, inner and outer steel pipes can be used as construction formwork, to avoid concrete surface quality problem in stripping process;Double prestress tensioning, increase the stability and tensile property of structure, while ensuring that concrete will not crack;Truss section component is all produced in factory, and scattered parts are transported to site installation, which significantly improves construction efficiency and ensures construction quality.

The utility model discloses a submerging line boundary pile for construction land acquisition and immigrant engineering survey, which comprises a pile body (4), the top surface of the pile body is arranged as a mark surface (11), the pile body comprises a first cylinder and a second cylinder, the cross sectional area of the first cylinder is larger than that of the second cylinder, and the first cylinder and the second cylinder are arranged in a staggered mode. The lower end of the first cylinder body is connected with the upper end of the second cylinder body, the first cylinder body is filled with concrete (5), the upper part of the second cylinder body is provided with a mortar pouring port (7), and mortar overflow holes (9) are distributed in a cylinder body of the second cylinder body. The utility model has the functional characteristics of environmental protection, portability, durability, attractive appearance and high efficiency.

The present invention discloses a method for automatically calculating the area of ​​land for land acquisition and resettlement. The method uses topology and spatial analysis technology to realize automatic area calculation and output, and includes the following steps: constructing surface elements based on the hierarchical topology of land-type topographic map data and outputting line elements that do not participate in the surface construction; associating the attributes of the constructed elements at each level and outputting logical error spots; associating the attributes of basic spot surface elements with other advanced surface elements to obtain complete attributes; calculating the area using basic spot surface elements, creating spot numbers, and outputting results. The method is highly integrated, simple to operate, and does not require deep professional knowledge. The method has a high degree of automation, can quickly calculate results, and is very efficient. In addition, the method provides a map attribute error checking mechanism, which ensures that the calculation results are consistent with the map through graphic error checking and attribute error checking, thereby improving the accuracy of the calculation of land indicators for resettlement and resettlement.

The invention relates to the technical field of linear water conservancy project construction planning, and discloses an enterprise management method and device for linear water conservancy project construction land acquisition, and the method comprises the steps: recognizing an enterprise range inflection point coordinate in a target linear water conservancy project construction land acquisition processing range, the enterprise range of the target enterprise is generated based on the enterprise range inflection point coordinates; determining an enterprise range related to the construction land acquisition based on the construction land acquisition processing range and the enterprise range of the target enterprise; generating vectorized enterprise investigation information based on the enterprise investigation data of the target enterprise; generating linear hydraulic engineering construction land acquisition enterprise influence distribution data based on the construction land acquisition processing range, the enterprise range of the target enterprise, the enterprise range related to the construction land acquisition and the vectorized enterprise investigation information; and determining an enterprise compensation management strategy based on the linear hydraulic engineering construction land acquisition enterprise influence distribution data. According to the method, the influence of linear hydraulic engineering construction land acquisition on enterprises can be scientifically and reasonably identified.

The utility model provides a land expropriation and immigrant information acquisition device, which belongs to the technical field of FDM type 3D printers and comprises a U-shaped seat, a mounting box is arranged at the top of the U-shaped seat, a support plate is movably arranged on the U-shaped seat, a scanning input instrument is movably arranged on the support plate, and lifting components for lifting the support plate are arranged on the U-shaped seat and the mounting box. The utility model solves the problems that the handheld scanning and recording instrument is easy to shake during scanning, so that the scanned content is not clear, the text information extraction and identification are not accurate, the summarizing work is influenced, and the summarizing efficiency is reduced.

The invention discloses an immigrant management information system fund safety guarantee system construction method and device and a medium, and relates to the technical field of immigrant fund safety management.The method comprises the specific steps that a distributed data chassis is constructed to store immigrant project data, a data verification method is adopted to conduct credible data verification on the immigrant project data, and a data verification result is obtained; an identity authentication and access control model is established for identity authentication, an intelligent fund contract is established, the intelligent fund contract is executed after the identity authentication is passed, the fund flow generated in the process of executing the intelligent fund contract is monitored in real time, abnormity is identified, and risk early warning is triggered. The layered architecture and the refined authority design can adapt to the requirements of water conservancy project immigrant projects of different scales, provide technical support for transparency, standardization and high efficiency of immigrant management work, and are suitable for various water conservancy project land acquisition immigrant fund safety guarantee scenes.

A porous box culvert structure unit comprises a top plate, a bottom plate, side walls and a plurality of middle partition walls, a plurality of bolt holes penetrating through the end faces and the surfaces of the top plate and the bottom plate are formed in the two ends of the top plate and the two ends of the bottom plate respectively, and a plurality of bolt holes penetrating through the end faces and the side faces of the side walls are formed in the two ends of the side walls and the middle partition walls respectively. One end of each bolt is located in the bolt hole of one of the two adjacent porous box culvert structure units, and the other end of each bolt is located in the bolt hole of the other porous box culvert structure unit, so that the two adjacent porous box culvert structure units are connected. The prefabricated box culvert has the beneficial effects that the box culvert construction speed can be increased, the construction quality can be improved, the construction risk can be reduced, the weather influence is small, in addition, the assembled box culvert structure can be used as a temporary road and an operation platform, so that the site occupation or temporary land acquisition is reduced, and the construction cost is reduced. And the system has superiority in areas without conditions for setting temporary shortcuts.