219 results about "Urban construction" patented technology

The embodiment of the invention provides a BIM-GIS three-dimensional twin geological modeling method and system based on cognitive enhancement. The method is applied to the technical field of geological modeling, and comprises the following steps: acquiring different data sources to carry out geological data acquisition, and carrying out preprocessing to obtain preprocessed geological data; converting the geologic body into a voxel three-dimensional model according to the preprocessed geologic data; performing multi-level optimization processing on the voxel three-dimensional model, constructing an optimized model, and performing three-dimensional display; and performing mineral resource space distribution prediction according to the voxel three-dimensional model, predicting the position and the number of mineral resources in combination with historical exploration data and a convolutional neural network, and performing underground water flow simulation analysis in combination with an underground water flow model. In this way, by combining the BIM and GIS technologies, the three-dimensional geological data can be efficiently and accurately managed and displayed, and the method can be widely applied to the fields of geological exploration, mining development, urban construction and the like.

The invention provides an urban construction and traffic engineering investigation and design enterprise product quality management system and method. The system comprises a cross-project type quality data fusion module, a dynamic defect evolution prediction module, an intelligent layered spot check engine, a three-dimensional quality situation deduction module, a conference knowledge graph construction module, a result influence evaluation module and a self-adaptive file management system. All the modules are connected through a unified data bus to form a closed-loop management process of quality data acquisition, analysis, decision and feedback. According to the system, through the functions of multi-modal data fusion, defect prediction, intelligent spot check, situation deduction, knowledge precipitation, achievement evaluation, file management and the like, the whole-process intelligent management and control of the project quality are realized, and the management efficiency and the decision scientificity are improved.

The invention discloses an urban construction project whole-process quality safety closed-loop supervision and tracing platform and method, and relates to the field of data tracing, and the method comprises the steps: constructing a project whole-life-cycle digital twin based on urban construction project data, and presetting a quality safety standard parameter set; implanting an Internet of Things traceable unit in the urban construction project key entity, and mapping the association relationship and the entity to a digital twinborn body; processing data acquired by the sensor network to generate a structured engineering state data set; an anomaly detection model is constructed based on CNN and LSTM, and when data deviates from a threshold value, early warning is triggered and a responsibility chain is traced; generating a processing instruction tree, and distributing the processing instruction tree to a responsibility subject; and the responsibility subject uploads a disposal process and a result, binds the disposal process and the result with an early warning event ID after Hash encryption, and stores the disposal process and the result in a traceability database. The method has the advantages that efficient quality safety supervision and tracing of the whole urban construction project process are achieved through the digital twinborn bodies, and the project safety and management efficiency are improved.

The invention discloses an urban construction intelligent monitoring system integrating geographic information and the Internet of Things technology, and belongs to the technical field of urban construction. In order to solve the problems that response to urban problems is lagged and development imbalance among urban areas is difficult to effectively reveal and solve, environment monitoring and infrastructure state evaluation are fused, the intelligent degree, real-time monitoring and quick response of urban management are remarkably improved, the processing speed of the urban problems is effectively improved, and the urban management system is suitable for urban management. The urban area is comprehensively evaluated through the evaluation index system, meanwhile, policy making is more refined through the area grading function, data support is provided for resource allocation, the timeliness of information is kept through continuous data updating, and the evaluation result is combined with a G IS system, so that the system is more efficient and reliable. The problem area and the dominant area are visually displayed, the balanced development of a city is promoted, and the overall living environment quality is improved.

The invention provides a smart city construction energy intelligent management scheduling regulation and control system, and relates to the field of energy intelligent management, comprising the following steps: the system detects energy physical parameters in real time through an event chain generation module, maps data into event nodes by using an event feature extraction chip, and sends the event nodes to a cloud server; an event chain topology is constructed through a causal association engine, and a nonlinear priority is generated; the responsibility collaboration module creates a scheduling instruction and a responsibility node based on the priority, calculates a responsibility weight through a reverse causal tracing algorithm, triggers cross-system permission degradation when the weight exceeds a threshold, and migrates the operation permission to an associated system; the paradox enhancement module injects controllable disturbance when the event chain conflicts or the responsibility nodes continuously exceed the limit, the disturbance effect is evaluated through the paradox index, the event chain topology is fed back and updated, and dynamic optimization and hidden risk prevention and control of energy dispatching are achieved.

The invention discloses an urban engineering construction suitability evaluation method and application thereof. The method comprises the following steps: S1, collecting nine types of influence factor data influencing urban engineering construction; s2, 45 specific evaluation factors are screened for each element, and an evaluation index system is constructed; s3, performing unified quantitative assignment on the evaluation factors to form a set of evaluation scoring standards; s4, according to the specific conditions of different evaluation areas, evaluation indexes are selected according to the step S2, a hierarchical structure model is established, a judgment matrix is constructed, and the corresponding weight of each evaluation factor is calculated in combination with an expert scoring method; and S5, on the basis of a CreateFishnet module of ArcGIS and a comprehensive index method, combining the calculated suitability evaluation comprehensive score of each unit grid, and finally obtaining an urban engineering construction suitability evaluation zoning result. According to the method and the application thereof, the evaluation and analysis efficiency and accuracy of the suitability of urban engineering construction are improved, urban construction planning can be better guided, and relevant government departments can make scientific and effective decisions and management.

The invention discloses a sponge city seepage and drainage structure and a sponge city water circulation system, and relates to the technical field of sponge city construction. A capillary air flotation grading pretreatment unit, a rhizosphere electro-catalysis layer and a mineral conversion filler layer are sequentially arranged below the permeable pavement layer in the rainwater permeation direction, and the drainage layer is a piezoelectric drainage layer; according to the method, blockages are subjected to capillary air flotation classification, minerals are converted into purification carriers, solid waste outward transportation is avoided, and heavy metal pollution is prevented; the water circulation end depends on photovoltaics, an external power grid is not needed, and carbon is reduced; sensor linkage adapts to a purification mode of high / low-pollution rainwater, and a straw self-cleaning function at the seepage and drainage end is prevented from being interrupted; the magnetic sensitive medium is prepared by converting blockages, outsourcing is avoided, and the cost is reduced; the ultrafine particles in the by-products assist in purification, the uleucite is used for preparing the pervious concrete, and the zeolite is used for improving the soil, so that environmental protection and resource regeneration are realized.

The invention provides a city extension simulation method and device, equipment and a storage medium. Relates to the technical field of city simulation. The method includes: selecting an interaction target based on a neighborhood configuration; performing feature extraction on the interaction target to obtain features of the interaction target; constructing a graph structure based on the characteristics of the interaction target; based on the graph structure, constructing a high-order graph attention network; a vector cellular automaton is integrated in the high-order map attention network to obtain an HGAT-VCA model, and city expansion simulation is realized based on the HGAT-VCA model; wherein the vector cellular automaton is used for calculating the total transition probability and determining the land utilization type. According to the method, the expansion of the urban construction land can be simulated and analyzed from a multi-scale and multi-level angle, the complex process of urban expansion and expansion paths under different scenes can be disclosed, and an existing urban expansion theoretical model is enriched.

The invention relates to the technical field of waste-free city carbon emission, and discloses a method for evaluating waste-free city construction carbon emission reduction benefits, which comprises the following steps: collecting related data of waste-free city solid wastes in a reference year and a target year; according to an emission factor method and a WARM model, determining a carbon footprint, and calculating the total carbon emission amount of the solid waste; setting a plurality of carbon emission reduction scenes of a waste-free city construction target year according to relevant national and urban plans; based on a WARM model and carbon footprint setting, carbon emission under each carbon emission reduction scene is calculated; based on a carbon emission calculation result, evaluating a carbon emission reduction benefit under a waste-free city policy; according to the evaluation result, a policy optimization scheme is provided, a carbon emission reduction monitoring system is arranged, and the purpose of medium-and-long-term carbon neutralization is achieved. The method effectively solves the problems that current carbon emission reduction evaluation is not accurate and systematic tools are lacked, helps local governments to realize accurate emission reduction and dynamic adjustment of waste-free targets, and has important practical significance and popularization value.

The invention relates to a relics restoration method based on a meta-universe and a digital twinborn technology, and aims to solve the problems of relics disappearance and historical memory deficiency in urban construction, and utilizes the meta-universe and the digital twinborn technology to build a relics 3D model on a meta-universe platform to realize scene restoration. A virtual scene is constructed through software such as 3DMAX and Unity 3D and related technologies, and the characteristics of identity, social contact, immersion and the like are achieved; the method has obvious advantages, the cost can be reduced, the efficiency can be increased, the real scene can be stably simulated, and multi-place policy support can be obtained. The market potential is large, and the method faces college teachers and students, culture enthusiasts and other groups. Popularization strategies such as social media propaganda and SEO are adopted, and the product has unique advantages and innovation and is flexible in pricing; in addition, the method has both campus and social public welfare, provides an innovative scheme for relics recovery, and is of great significance in the fields of cultural inheritance, education and the like.

The invention discloses a combined type steel sheet pile foundation pit supporting structure, and relates to the field of foundation pit supporting, the combined type steel sheet pile foundation pit supporting structure comprises a steel sheet pile assembly, the steel sheet pile assembly comprises a plurality of first steel sheet pile components and a plurality of second steel sheet pile components, and the first steel sheet pile components and the second steel sheet pile components are alternately spliced; the first steel sheet pile component is formed by two first steel sheet piles in a staggered and sleeved mode, the second steel sheet pile component is formed by two second steel sheet piles in a staggered and sleeved mode, and the first steel sheet piles and the second steel sheet piles which are located at the adjacent positions are also arranged in a staggered and sleeved mode. By adopting the long and short steel sheet pile combined supporting mode, the input number of the steel sheet piles is reduced, meanwhile, the driving difficulty of the steel sheet piles is reduced, the loss and waste of the steel sheet piles are effectively reduced, hole guiding construction is conducted through a drilling machine, and compared with a traditional rotary drilling pile machine hole guiding mode, the needed construction operation area is smaller, and the construction efficiency is improved. The influence of surrounding houses and roads is small, and the method is more suitable for urban construction.

The utility model discloses an anti-clogging drainage structure for urban construction roads, which comprises a middle shell, the middle shell is mounted on external equipment, a pollution discharge mechanism is arranged on the middle shell, and the pollution discharge mechanism comprises a rotating mechanism, an external connecting sleeve, a shifting piece, a side plate, a one-way sleeve, a sealing ring, a one-way disc and an adjusting mechanism. The rotating mechanism is matched with the middle shell and the shifting piece, one end of the external connecting sleeve is communicated with the middle shell, the sewage discharging mechanism achieves effective discharging of sewage through matching of the rotating mechanism, the external connecting sleeve, the shifting piece, a side plate, a one-way sleeve, a sealing ring, a one-way disc and the adjusting mechanism, and when the motor and the speed reducer drive the transmission shaft to rotate, the shifting piece rotates along with the transmission shaft, so that the sewage discharging effect is improved. The external connecting sleeve introduces sewage into the middle shell, and the sewage is discharged through the movement of the shifting piece, so that the sewage discharge process is efficient and smooth, and the smoothness of a road drainage system is ensured.

The invention discloses an urban construction archive abnormity early warning method based on artificial intelligence, and the method comprises the steps: S1, collecting and preprocessing multi-source archive data, and constructing an archive feature library; s2, extracting file text features, drawing component features and approval label features, and generating a multi-modal feature vector; s3, generating an archive knowledge graph and a time sequence feature sequence by using the multi-modal feature vector, inputting the archive knowledge graph and the time sequence feature sequence into an HGT graph neural network, and outputting archive structure embedded representation and evolution chain semantic features; s4, the archive structure embedding is compared with the version evolution chain feature, and a potential abnormal record is generated; s5, carrying out risk quantification based on the improved MC-Dropout, and outputting an abnormal type, a position and a risk level; and S6, submitting the abnormal information to an urban construction archive management platform. According to the method, the early warning strategy is optimized through the graph neural network and the uncertainty evaluation mechanism, and efficient and accurate urban construction archive anomaly recognition and early warning are achieved.

The invention discloses a big data analysis and automatic evaluation system in project cost consultation, and relates to the technical field of big data analysis and evaluation. By constructing a unified data acquisition framework and a dynamic updating mechanism, efficient integration and real-time interaction of multi-party heterogeneous data are realized, data transparency and reliability are remarkably improved, a solid data basis is provided for project cost management, the system quickly and accurately optimizes various variables by utilizing comprehensive analysis and multivariable optimization technologies, and the system has a good application prospect. The system adapts to the dynamic environment, enhances the anti-risk capability of the project, ensures that the project cost management meets the real-time requirement and realizes the globally optimal solution, and in addition, through resource allocation strategy generation, view updating and decision recording and a feedback loop mechanism, the system realizes the generation and continuous improvement of a resource allocation strategy oriented to global benefit balance. The resource allocation efficiency and the long-term competitiveness of the project are improved, and powerful support is provided for sustainable development of urban construction.

The invention relates to the technical field of city construction, in particular to a city built-up environment intelligent evaluation system based on multi-source data fusion, which comprises multi-source data acquisition and processing, a city update potential recognition model, cross-scale quantitative evaluation system construction and built-up environment and city vitality nonlinear interaction mechanism analysis. The construction of the cross-scale quantitative evaluation system specifically comprises the step of establishing a comprehensive evaluation model of facility density, population matching degree and traffic network structure in combination with an AHP-entropy weight method and spatial syntactic analysis. According to the invention, through multi-source data fusion, cross-scale quantitative evaluation, machine learning modeling and interpretability analysis, an accurate, efficient and generalizable city update decision support system is constructed.

The invention discloses a novel subsection bonding prestressed anti-pulling and anti-floating pile and a construction method thereof, and relates to the technical field of buildings. The novel subsection bonding prestress anti-pulling and anti-floating pile comprises a pile body part, specifically, the novel subsection bonding prestress anti-pulling and anti-floating pile comprises steel reinforcement cages arranged in a subsection mode, and all the sections of steel reinforcement cages are axially connected through connecting pieces. According to the novel segmented bonding prestressed anti-pulling and anti-floating pile and the construction method thereof, the stress character of concrete is changed, so that the concrete is pressed in the tension process, the stress of the concrete is more reasonable, and the anti-pulling and anti-floating pile design can be carried out according to first-level crack resistance; lots of rebars are saved; after long spiral pore-forming pressure-grouting concrete, a reinforcing steel bar-steel strand cage is inserted, rapid construction is achieved, the efficiency is high, and the construction speed is 5-10 times higher than that of a traditional reverse circulation drilling machine; the method has the advantages of no need of slurry protection wall, no slurry pollution, dry operation, facilitation of safe and civilized construction, especially in-city construction, strict requirements on slurry pollution, and more obvious advantages.

The utility model belongs to the field of sponge city construction, and particularly relates to a rainwater garden system for sponge city construction, a permeation area in a foundation pit of the rainwater garden system sequentially comprises a water storage layer, a covering layer, a planting soil layer, an artificial filler layer, a sand layer and a gravel layer from top to bottom, and the high porosity of water storage ceramsite is utilized, so that the water purification and storage performance is good; through mutual cooperation of all the layers, rainwater is effectively purified and stored, and the water quality and the water storage amount of the rainwater garden system are improved. In addition, the rainwater garden system is simple in structure and convenient to construct and maintain in the later period.

An optical range finder for urban construction planning belongs to the technical field of range finders and comprises a range finder body, a shielding part detachably mounted on the top of the range finder body, a through hole formed in the middle of the shielding part, a blocking part detachably mounted in the through hole, and a protective part detachably mounted in front of the shielding part. When the distance measuring instrument is not used, the blocking piece is installed in the through hole, the shielding part and the blocking piece protect the lens of the distance measuring instrument body at the moment, dust is prevented from adhering to the lens, the distance measuring effect is prevented from being influenced, meanwhile, the protection component is installed on the shielding part, and the protection component protects the display screen and the keys in front of the distance measuring instrument body at the moment. And a large amount of dust is prevented from adhering to the display screen and the keys.

The present invention discloses a new urban construction integration project evaluation method and system based on multiple dimensions, which relates to the field of urban construction evaluation and multidimensional data modeling and analysis technology, including collecting the original value and score of the same indicator in multiple new urban construction integration projects, and constructing an indicator scoring point set. The score values ​​in the indicator scoring point set are normalized, and the influence of outliers is eliminated. Multi-class scoring function models are fitted and the goodness of fit is calculated, and the standard scoring function form is determined according to the goodness of fit. A scoring function template is established based on the standard scoring function form and function parameters, and stored in a scoring function template library. The method of the present invention realizes a scientific, unified, and reusable quantitative evaluation mechanism for new urban construction integration projects, effectively overcoming the problems of strong subjectivity of scoring rules, difficulty in migration, and inconsistent evaluation standards in existing methods, and improving the objectivity, flexibility and intelligence of the evaluation system.

The present application relates to ecological slope protection, a method for establishing a rainwater infiltration control model based on the same, and a control method, and belongs to the technical field of urban construction. The slope protection comprises a water-permeable layer, a reinforcing layer, and a plant cover layer stacked in sequence. The water-permeable layer is fixed on the surface of the slope soil. The root system of the plant cover layer penetrates the reinforcing layer and the water-permeable layer in sequence and is rooted in the slope soil. The water-permeable layer comprises a gradient porous ceramic layer and a polymer water-conducting fiber layer. The gradient porous ceramic layer is close to the reinforcing layer. A humidity sensor sub-network is arranged at the junction of the reinforcing layer and the plant cover layer and at the junction of the water-permeable layer and the reinforcing layer. Pressure sensors are arranged at the top and bottom of the polymer water-conducting fiber layer. A rain sensor is arranged in the open area at the top of the slope. The bottom of the polymer water-conducting fiber layer is provided with a plurality of water-conducting pipes. Side water-conducting valves are arranged on the water-conducting pipes. The present application realizes multiple infiltration paths for rainwater and solves the problem of the conflict between root system infiltration and the direction of infiltration and the gravitational field in traditional slope protection.

The invention relates to the technical field of urban construction, in particular to a kerb and tile visual grabbing control system. A kerb and tile visual grabbing control system comprises a visual identification module, a system control module and a six-axis mechanical arm module, the six-axis mechanical arm module comprises a mechanical arm main body and an auxiliary control assembly, the mechanical arm main body is used for grabbing and laying kerbs and tiles, and the auxiliary control assembly is used for controlling the mechanical arm main body. The mechanical arm body comprises a supporting arm, a lifting arm, a swing arm and a mechanical claw which are sequentially and rotationally connected, and the auxiliary control assembly is connected between the front end of the supporting arm and the front end of the swing arm and used for supporting the mechanical arm body and reducing the equipment load. According to the mechanical arm, the torque generated to the front end of the swing arm when the mechanical claw grabs a heavy object can be effectively shared, the load of each joint motor is greatly reduced, and therefore the structural rigidity and the movement stability of the whole mechanical arm under the heavy-load and large-arm-span working conditions are enhanced, and the precision and stability of the laying action are ensured.

The utility model discloses an isolation guardrail for urban construction, which comprises a stand column A, a stand column B and handrails, the opposite sides of the stand column A and the stand column B are connected with the handrails, a connecting assembly is arranged between the stand column A and the stand column B, and the connecting assembly comprises a fixed side plate, a sliding groove, a sliding connecting plate, a spring, an inserting pile and an inserting groove. The fixed side plate is fixed to one side of the stand column A. The sliding groove is formed in one side of the stand column B. The number of the sliding connecting plates is two. Through the designed connecting assembly, fixed connection between the stand column A and the stand column B can be completed, fixed connection between the stand column A and the stand column B at different angles can be achieved through insertion connection of the insertion piles and the insertion grooves at different angles, and therefore the arc-shaped isolation requirement can be well met; meanwhile, the whole connecting and dismounting process of the stand column A and the stand column B does not need external tools and can be operated by hands, and convenience is provided for personnel.

The invention belongs to the technical field of dustproof monitoring, and provides an unmanned aerial vehicle route planning method for urban construction flying dust monitoring in order to solve the problems of large search space and constraint of maneuvering characteristics and total electric quantity of current unmanned aerial vehicle route planning. A construction dust raising space monitored by an unmanned aerial vehicle is divided into grids by adopting a grid method, an unmanned aerial vehicle starting monitoring point and an unmanned aerial vehicle ending monitoring point are determined, an unmanned aerial vehicle to-be-checked node set and an unmanned aerial vehicle checked node set are established, and all key monitoring points are quickly traversed in a very short time; the process route is the optimal route by moving from the termination monitoring point to the current node of the last cycle until the current node returns to the starting point. According to the invention, the efficiency and coverage rate during dust monitoring are improved, and comprehensive monitoring of construction dust is realized.

The utility model relates to the technical field of city planning sunlight simulation, and discloses a sunlight simulation model for city planning, which comprises a display board, the bottom of the display board is fixedly connected with a rotating block, the periphery of the rotating block is provided with a rotating assembly, and the side surface of the display board is fixedly connected with a fixed board. An adjusting assembly is arranged in the fixing plate, and a display assembly is fixedly connected to the top of the display plate; and the rotating assembly comprises a fixing block, the interior of the fixing block is rotationally connected with the periphery of the rotating block, and a rotating disc is fixedly connected to the bottom of the rotating block. According to the utility model, force is applied to the display board, the display board can be rotated by means of the cooperation of the rotating block and the fixed block so as to adjust the angle of the display board, and under the action of the spring I, the clamping ball and the U-shaped groove, the rotating friction force can be improved, the adjusting effect can be enhanced, and people can conveniently know the urban sunshine condition and reasonably plan urban construction.

The invention provides a sponge city construction full-permeable road rainwater collection system mechanism, and relates to the field of road construction, the sponge city construction full-permeable road rainwater collection system mechanism comprises a support bottom plate, a collection cylinder and a mounting support rod, the support bottom plate is in a square frame shape, four corners of the support bottom plate are provided with four connecting cavities with outward openings, and the positions of the connecting cavities are symmetrical. The rainwater is collected through the collecting groove, the rainwater is guided to flow into the closed cavity through the guide groove, at the moment, a part of the rainwater downwards falls into the soil in the filling space through the guide hole to achieve the absorbing and supporting effects, and after the rainwater is absorbed, the soil in the filling space is expanded in volume and complements each other to achieve the supporting effect; in rainy days, earthquakes and other special disasters, if the outer wall of the filling cavity is broken, the foam joint mixture stored in the filling cavity flows outwards into soil gaps in the filling space and the collecting cavity, and the effects of reinforcement and stabilization are achieved through the foam joint mixture.

This invention discloses a method for analyzing the self-attractiveness of public spaces based on the behavioral characteristics of urban residents, including the following steps: (1) Data preprocessing: Collect objective data on the scale, function, and population size of urban public spaces within a fixed statistical period, classify public spaces in urban residential areas by type, and perform data preprocessing; (2) Spatial vitality analysis: Analyze the vitality of public spaces from two aspects, namely, analyze the degree of residents' gathering in designated public spaces and the stability of their stay in public spaces; (3) Spatial optimization and adjustment: Optimize and adjust urban residential public spaces based on residents' usage needs, the scope of space optimization, and the existing resource allocation of various public spaces. This invention improves the utilization rate of urban public spaces and accurately positions the future development direction of new urban construction, enabling effective planning of various public space resources and avoiding resource waste.

The invention belongs to the technical field of nuclear power, and particularly relates to a nuclear power plant structure concrete permeation repairing method. According to the method, an effective permeation repair technology is provided for the concrete corrosion problem caused by chloride ion erosion, a set of complete technical process is provided from permeation repair material selection, spraying pre-test, construction to quality acceptance, and systematicness and normalization of repair work are ensured. Compared with a traditional concrete corrosion repairing method, the method is simple and clear in step and easy to operate, the construction difficulty and cost are reduced, the permeation corrosion repairing work becomes more efficient and feasible, and the method is suitable for concrete corrosion repairing of bridges, seaport facilities, roads, buildings and other infrastructures and also suitable for concrete corrosion repairing of the infrastructures such as the bridges, the seaport facilities, the roads and the buildings. The method can also be widely applied to other concrete structures needing long-term protection and maintenance, and has important popularization value in modern city construction and infrastructure maintenance.

The invention discloses a town space regulation and control method for promoting cooperation of carbon reduction, pollution reduction, green expansion and growth, and the method comprises the steps: extracting a town current situation boundary, determining a town current situation built-up area range, simulating a town space expansion inertia boundary, determining a town expansion inertia space, and determining economic, social and ecological value models of an agricultural land. And delimiting an urban space treatment regulation and control area. According to the method, a spatial undifferentiated curve of land resources serving as farmland and urban construction land utilization is theoretically defined, and a spatial reference system for urban space governance regulation and control multi-scheme coordinated with carbon reduction, pollution reduction, green expansion and growth is found in practice; the urban space governance regulation and control model and method are provided from multiple aspects, and a regulation and control scheme is provided for regional space governance and high-quality development.

The utility model discloses an urban construction planning drawing projection display device which comprises a supporting seat, a supporting plate and a projector are arranged on the supporting seat, a ball sleeve is arranged on the supporting seat, a ball head is arranged at the bottom of the supporting plate, a balance weight rod and a balance weight ball are arranged at the bottom of the ball head, and a plurality of supporting bolts are arranged between the supporting seat and the supporting plate. A fixing device is arranged between the supporting plate and the projector and comprises a fixing sleeve, a fixing rod is arranged on the projector, a clamping rod is arranged on the fixing sleeve in a sliding mode, a clamping block is fixedly arranged on the clamping rod, a clamping ring groove is formed in the fixing rod, and a ball head is driven to rotate in a ball sleeve through cooperation of a balance weight rod and a balance weight ball; the adjusting mode is simple and convenient, the horizontal height of the supporting plate is conveniently supported through the supporting bolts, the horizontal supporting stability of the supporting plate is improved, and the projector is conveniently fixed through cooperation of the clamping blocks and the clamping ring grooves.

This invention relates to the field of sponge city pavement layout technology, and provides a GIS-based method and system for sponge city building facility layout. The method includes: using the terrain information of the area to be constructed obtained by the GIS system to construct a surface model corresponding to the slope, and dividing multiple first surface regions with the same slope; calculating the amount of precipitation borne by each region through the first type of surface integral and precipitation, calculating the proportion of precipitation that can be absorbed by the steep slope of the region, and determining the flow direction of precipitation based on the height difference between adjacent surface regions, calculating the final amount of rainwater that each region needs to bear, and setting the pavement parameters of the building facilities accordingly so that the permeability is consistent with the rainwater bearing capacity, so that urban construction can have better adaptability to rainwater in sloping areas and improve the city's ability to bear rainwater.