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798results about "Water resource protection" patented technology

Method for repairing fish habitat in mountain river based on numerical simulation optimization

The invention relates to the technical field of mountainous river fish habitat habitat restoration, and relates to a mountainous river fish habitat restoration method based on numerical simulation optimization, comprising: acquiring habitat data of a mountainous river fish habitat, and performing preliminary ecological restoration measures on the mountainous river fish habitat; constructing a numerical simulation model to predict the erosion and deposition evolution result of the fish habitat in the mountain river after the preliminary ecological restoration in a set period, and identifying an area of which the erosion and deposition evolution degree meets a preset threshold value in the set period; and carrying out riverbed substrate transformation on the identified area based on the target fish, evaluating the habitat improvement effect under the combined action of the preliminary ecological restoration measure and the riverbed substrate transformation through a habitat suitability model, and completing the restoration of the fish habitat in the mountain river based on the evaluation result. According to the method, dredging, spur dike and substrate transformation are combined, and numerical simulation optimization is combined, so that the effectiveness, continuity and scientificity of restoration of the fish habitat in the mountain river are improved.
Owner:YALONG RIVER HYDROPOWER DEV CO LTD +1

River flow missing data reconstruction method

The invention discloses a river flow missing data reconstruction method, which comprises the following steps of S1, constructing a river network topological structure, and quantifying hydraulic correlation; s2, spatio-temporal feature fusion and multi-source information extraction; s3, performing multi-task cooperative flow reconstruction and confidence coefficient prediction; s4, dynamic weighting and result correction of meteorological factors; and S5, performing anomaly detection and model dynamic updating. According to the method, a river flow missing data reconstruction method is set, the steps are mutually fused and used, and topology-aware space-time diagram convolution is performed: a river network topology structure is encoded into a weighted adjacency matrix for the first time, space correlation features are extracted through a diagram convolution network, and the problem that a traditional method ignores hydraulic connection is solved; a multi-task collaborative learning mechanism: synchronously outputting a flow reconstruction value and confidence, combining topological smooth constraints, and realizing reconstruction reliability quantification while ensuring precision; and meteorological dynamic weighted correction: dynamically adjusting the node weight based on the real-time rainfall intensity, and accurately adapting to the nonlinear response of the water flow in the heavy rainfall period.
Owner:JIANGXI SHUITOUJIANG INFORMATION TECH CO LTD

River network grading system and method based on graph theory and confluence cumulant

The invention relates to a river network grading system and method based on a graph theory and confluence cumulant, and belongs to the technical field of water conservancy projects and geographic information. Comprising the following steps: acquiring original DEM data and water system data, and converting the water system data to a preset projection coordinate system; extracting a primary river network based on the DEM data, and screening the primary river network in combination with the length of the river network and the area of the drainage basin to obtain a simplified river network; river network flow calculation: carrying out flow assignment on each river network element in the simplified river network based on the confluence cumulant; graph theory modeling: abstracting the simplified river network into a directed graph model; and river network grading: reverse tracing is carried out by taking the water outlet as a starting point, and the hierarchical relationship between the trunk and the branch is determined by combining the in-degree / out-degree and the edge weight of the node, so that river network grading is realized. According to the method, river network grading is upgraded from morphological description to hydrological function description, and the method is suitable for high-precision river network refined analysis, intelligent water conservancy emergency management and other scenes.
Owner:JINING UNIV

River and lake ecological buffer zone carbon sink potential evaluation and repair construction system

The invention relates to the technical field of ecological restoration and carbon sink evaluation, and discloses a river and lake ecological buffer zone carbon sink potential evaluation and restoration construction system which comprises a carbon sink potential evaluation module, an intelligent restoration construction module and a collaborative verification module. The carbon sink potential evaluation module is used for collecting soil and vegetation data and calculating the carbon sink potential; the intelligent restoration construction module executes ecological restoration based on a carbon sink potential evaluation result; and the collaborative verification module verifies the repair effect through multi-source data fusion, and returns an optimization instruction to the carbon sink potential evaluation module and the intelligent repair construction module. The vegetation coverage index and the root biomass density are acquired by using a multispectral sensor array, a carbon sink model is constructed by combining the organic carbon content of soil, dynamic weight adjustment is introduced, and the weight is updated according to aerial survey data of an unmanned aerial vehicle in each quarter, so that a more accurate and more economical carbon sink potential evaluation basis can be provided for ecological restoration, and the ecological restoration efficiency is improved. And resource waste and invalid repair are avoided.
Owner:HUNAN DEYU CONSTR CO LTD

Fabricated shoreline component design optimization system

PendingCN120654294AGeometric CADWater resource protectionBiological conditionEvaluation result
The invention belongs to the technical field of assembly type shoreline component design optimization, and particularly relates to an assembly type shoreline component design optimization system. According to the method, the environmental conditions, biological conditions and future demands of the river and lake shoreline are comprehensively considered, rapid optimization of assembly type shoreline component design is achieved by utilizing an intelligent analysis technology, river and lake condition parameters and biological condition parameters of the target shoreline can be automatically obtained and analyzed, future demand parameters are predicted, and the design efficiency is improved. According to the method, the optimal component material, size and connection mode meeting the target shoreline requirement can be screened out through material optimization and structure optimization, an optimal assembly scheme is generated, in addition, a feedback mechanism is further provided, the optimized component design parameters can be comprehensively evaluated, and the optimal assembly scheme is obtained. And carrying out iterative optimization according to an evaluation result until a preset comprehensive feasibility score and an ecological friendliness index are reached, and outputting a final design scheme.
Owner:CHINA CONSTR WATER ENVIRONMENTAL PROTECTION CO LTD +1

Dredged soil transfer device for river dredging

The utility model relates to the technical field of river dredging, in particular to a dredged soil transfer device for river dredging, which comprises a blanking barrel, a bearing device is fixedly connected to the lower part of the outer surface of the storage barrel, a blanking pipe is fixedly connected to the lower part of the outer surface of the storage barrel, and a turnover device is fixedly connected to the middle of the right end of the blanking barrel; the overturning device comprises a driving motor, and the output end of the driving motor penetrates through the discharging barrel and is fixedly connected with a rotating rod. According to the dredged soil transfer device for river dredging, the turnover device, the bearing device and the connecting assembly are arranged, dredged soil is prevented from being blocked in the discharging barrel, it is ensured that the dredged soil can flow smoothly, the risk that the device is damaged due to blockage is reduced, the whole device can be kept stable under different ground conditions, and the service life of the device is prolonged. The applicability of the transfer device under various complex terrains and working conditions is greatly enhanced, and the transfer device is not limited by specific construction environments any more.
Owner:TIANJIN NANGANG ECOLOGICAL IND DEVELOPMENT CO LTD

Three-dimensional terrain construction method based on multi-modal semantic constraint

The invention discloses a three-dimensional terrain construction method based on multi-modal semantic constraints, and relates to the technical field of three-dimensional terrain modelling, and the method comprises the steps: obtaining an optical remote sensing image and a digital earth surface model, constructing unified space reference data, and carrying out the joint semantic analysis of ground features under the guidance of the multi-modal semantic constraints; generating a semantic mask set with structural consistency; further performing regional geometric reconstruction on the digital earth surface model on the basis of a mapping relation between semantic categories and earth surface physical attributes to form a three-dimensional terrain entity conforming to ground feature space expression characteristics; meanwhile, by analyzing the project cost document and extracting the project cost data with spatial directivity, under the constraint of spatial consistency and semantic consistency, the project cost information and the three-dimensional topographic entity are subjected to association mapping, and finally a three-dimensional topographic data result fusing topographic geometric information and project economic attributes is formed.
Owner:JIANGSU DINONI INFORMATION TECH CO LTD

River sediment heavy metal in-situ curing and repairing method

The invention provides an in-situ curing and repairing method for heavy metals in river sediment. The in-situ curing and repairing method comprises the following steps: S1, detecting the content and physicochemical properties of the heavy metals in the river sediment; s2, designing a repair material formula; s3, preparing and putting a repairing material; s4, mixing and stirring the bottom mud and the repairing material; s5, monitoring and evaluating the repairing effect; and S6, repairing effect feedback and adjustment. According to the method, multiple linear regression, curved surface fitting, self-organizing mapping and mixed density network algorithms are fused, the sediment heavy metal content and physicochemical property data are fully utilized, a repair material formula can be accurately designed, and compared with a traditional single algorithm or empirical formula design, the repair material proportion can better fit the actual pollution condition, and the repair efficiency is improved. The utilization rate of repair materials is improved.
Owner:SHENYANG SETH ENVIRONMENTAL ENG DESIGN & RES CENT CO LTD

River sediment physical habitat evolution identification method, device and system and medium

PendingCN121616949AImage enhancementWater resource protectionWatershed managementHydrometry
The invention provides a river sediment physical habitat evolution identification method, device and system and a medium. The method comprises the following steps: acquiring a multi-temporal remote sensing image and hydrological data (flow Q, water level Zw and slope S), screening and other hydrological condition image pairs; extracting a water surface range, and calculating the average width B of the main groove; deducing the average water depth h by using a Manning formula, and calculating the riverbed elevation zbed by combining the Zw; the difference value delta zbed of zbed in different periods is calculated, and the substrate state is judged according to the difference value delta zbed and a threshold value epsilon; and performing segment processing along the center line to output a spatial distribution result. On-site measurement is not needed by relying on conventional data, and consumption is reduced; water level interference is eliminated through equal hydrological condition matching, and comparability is ensured; water depth inversion and differential analysis directly reflect scour deposition and quantitatively reveal rules; long-distance automatic processing improves space-time coverage capability and precision, and provides a basis for river regulation, ecological restoration and drainage basin management.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

River target accurate detection method based on data augmentation and YOLO improvement

The invention belongs to the technical field of image target recognition, and particularly provides a data augmentation and YOLO improvement-based accurate river target detection method, which comprises the following steps of: acquiring a river water surface target image, and augmenting the river water surface target image by using a multi-data augmentation strategy to obtain an augmented image; a re-parameterization variable attention feature extraction module and a multi-branch fusion reconstruction module are introduced into the YOLO network, and the augmented image is combined to construct a riverway water surface target detection model; and performing target detection on a to-be-detected riverway water surface target image based on the riverway water surface target detection model to obtain a target detection result. Through data augmentation and multi-module design, the detection capability of the model on few samples, small targets and multi-scale targets is improved, complex background interference is effectively inhibited, and the method is more suitable for river scenes.
Owner:WUXI UNIV

Double-water-outlet faucet structure

The utility model provides a double-water-outlet faucet structure. A first water pipe and a second water pipe which are independent are arranged in a stand column of the double-water-outlet faucet structure. The lower fixed connector is located at the axial upper end of the stand column, a first annular water channel on the peripheral side of the lower fixed connector is communicated with a first water pipe, the lower movable connector is rotationally arranged outside in a sleeving mode and provided with a first water outlet nozzle, the lower movable connector is sleeved with the lower rotary arm, an inner first water outlet channel is connected with the first water outlet nozzle, and a lower water outlet is formed in the tail end of the lower rotary arm. A second annular water channel on the peripheral side of the upper rotating arm is communicated with a second water pipe, the upper movable connector is arranged outside in a sleeved mode and provided with a second water outlet nozzle, the upper rotating arm is arranged outside in a sleeved mode, a second water outlet channel inside the upper rotating arm is connected with the second water outlet nozzle, and an upper water outlet is formed in the tail end of the upper rotating arm. Diversified water use requirements are met, water use convenience and flexibility are improved, the defect that installation is limited in places can be overcome, and the application range of faucet products is widened.
Owner:XIAMEN SANCHANG SANITARY WARE TECH CO LTD

River and lake sludge dewatering and curing ecological bank protection process

The invention discloses a river and lake sludge dewatering and curing ecological bank protection process. Ecological bank protection construction is achieved through in-situ resourceful treatment of sludge. The process comprises the following steps: firstly, pressing natural wood piles into the bottom of a bank slope to form a comb-shaped anti-sliding bent frame, and paving high-strength permeable geotextile pipe bags between the piles and the bank slope; bottom mud is extracted by adopting mud suction equipment, is modified by a flocculating agent and then is injected into a tubular bag in a layered manner, and gravity dehydration is completed by utilizing the permeable characteristic of tubular bag fabric; the tops of the pipe bags are backfilled with stacking materials for graded stacking, and solidification is accelerated through external pressurization to form a stable bank protection filling body; and finally, the surface layer is covered with planting soil, moisture-proof plants are planted, and the composite revetment with the permeation drainage function and the ecological function is constructed. Compared with a traditional technology, the technology effectively solves the problems of bottom mud outward transportation pollution and resource waste through triple synergy of geotextile tube bag gravity dehydration, natural timber pile stability enhancement, building body strength improvement through graded stacking and loading and the like, and the formed revetment has ecological restoration and landscape functions. The method is suitable for ecological restoration of rivers and lakes, wetland reconstruction and waterfront environment treatment, and has the comprehensive advantages of convenience in construction, environmental friendliness, economy and high efficiency.
Owner:NANJING COMM INST OF TECH +1

Construction method for treating storage yard foundation in hydraulic reclamation area

The invention provides a hydraulic reclamation area storage yard foundation treatment construction method which comprises the steps that a treatment area is divided into a consolidated hydraulic reclamation sand area, a storage sand area and a new hydraulic reclamation sand area according to the formation time and compactness difference of strata, a three-dimensional drainage system is laid in the new hydraulic reclamation sand area and comprises a horizontal permeable gabion wall and a vertical drainage plate, and a gravity drainage channel is formed; the process of forming a drainage channel through vibroflotation and then carrying out dynamic compaction and densification is adopted in a consolidated area, the process of alternately implementing vibroflotation and dynamic compaction is adopted in a sand stockpiling area, the process of carrying out local vibroflotation reinforcement after layered dynamic compaction and pre-pressing is adopted in a new hydraulic reclamation area, and vibroflotation and dynamic compaction construction parameters are dynamically fed back and adjusted by monitoring gravel data. The foundation treatment problem of hydraulic reclamation areas formed in different years is solved.
Owner:THE FIRST CONSTRUCTION COMPANY OF CCCC SECOND HARBOR ENGINEERING CO LTD +1

Wetland flagship species habitat restoration method based on corridor construction

The invention provides a wetland flagship species habitat restoration method based on corridor construction. Belongs to the technical field of wetland ecological engineering. The method specifically comprises the following steps: 1, site selection of a restoration area and comparative background investigation; 2, riverbed stair transformation and local micro-landform construction; 3, seasonal hydrological regulation and vegetation directional assembly; 4, food source organism allocation and bionic nest site building; and 5, corridor coverage type management and control and sustainability evaluation are carried out. The method is clear in principle and high in operability, the ecological corridor between the natural wetland plaques can be effectively constructed through the degraded wetland, targeted supply of food source biological resources is achieved, the construction thought conforms to the close-to-nature restoration concept, and no engineering potential safety hazards or risks disturbing health of ecological systems of natural habitats of wetland flagship species exist.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S

Micro-water closestool flushing device

The utility model discloses a micro-water closestool flushing device. Comprising a water storage tank, a flushing system and a water inlet system, wherein the flushing system comprises a flushing tank with a water inlet and a water outlet, and a water pressing piston is arranged in the flushing tank; a pressing handle is arranged on the water pressing piston; the pressing handle is upwards led out of the water storage tank; one-way valves are arranged at the water inlet and the water outlet; a reset spring is arranged between the inner surface of the water pressing piston and the bottom of the flushing tank. According to the flushing device, a high-pressure micro-water technology is adopted, namely, pressure energy and gravitational potential energy of water can be converted into flushing kinetic energy through pressing, so that excrement is effectively flushed and swept, therefore, the flushing device has an obvious water-saving effect, the amount of water required for flushing each time is small, and water resources are saved.
Owner:HUATIAN ENG & TECH CORP MCC +1

A river water power model construction method based on multi-source remote sensing

The present disclosure relates to the technical field of model construction, and provides a river water dynamics model construction method based on multi-source remote sensing, which comprises the following steps: acquiring a river remote sensing image to obtain a water edge line, acquiring water level data by means of an altimeter satellite, and giving an elevation value to a water edge line corresponding point according to the water edge line and the water level data; for a straight river section, a value is taken according to a specific rule, and for a curved river section, the value is determined according to linear fitting of multiple elevation measuring point values on a river section; based on the elevation values of the water edge lines of the straight and curved river sections, a river terrain digital raster model is further constructed by interpolation along the water edge line, the river water dynamics model is constructed by using the river terrain digital raster model, the simulation effect of the water dynamics model is determined by comparing the water level consistency or the water surface vector form consistency, and the calibration and verification of the river water dynamics model are realized. The present disclosure realizes accurate simulation of the river water dynamics process. The present disclosure can reduce the cost of model parameter acquisition.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Ecological recovery method and apparatus for polluted river in basin, and electronic device

Provided in the present invention are an ecological recovery method and apparatus for a polluted river in a basin, and an electronic device. The method comprises: acquiring state information of a polluted river; on the basis of the state information, determining an implementation starting stage and an ecological recovery objective; then determining feedback indicators, feedback sub-indicators corresponding to the feedback indicators, and implementation schemes corresponding to the implementation starting stage; on the basis of the feedback indicators, the feedback sub-indicators and the ecological recovery objective, determining a first importance ranking of the implementation schemes; according to the first importance ranking, using the implementation schemes to perform implementation; on the basis of obtained implementation results, determining a second importance ranking of the implementation schemes, and according to the second importance ranking, performing implementation until the implementation starting stage meets the ecological recovery objective; and then performing a next implementation stage following the implementation starting stage, such that the next implementation stage meets a corresponding ecological recovery objective. The method improves the stability of ecological recovery and the accuracy of targeting treatment issues, and reduces monitoring expenses and treatment costs.
Owner:POWERCHINA HUADONG ENG CORP LTD

River flow field reconstruction method, system and equipment and storage medium

The invention relates to the technical field of crossing of hydraulic engineering informatics, computational fluid mechanics and artificial intelligence. The invention discloses a river channel flow field reconstruction method, system and device and a storage medium, and the method comprises the steps: a data preprocessing module carries out the rasterization of unstructured hydrodynamic data, and extracts dynamic hydraulic boundary parameters and static geometric features containing a terrain and sign distance function; performing deep semantic coding on the boundary conditions by using an attention mechanism, and performing multi-modal splicing fusion on the boundary conditions and the static geometric features to generate a mixed feature map; based on the feature map, recovering flow field details step by step through cascade space up-sampling and convolution operation to generate a high-resolution prediction flow field; and further performing reverse normalization, and using a symbol distance function as a physical mask to identify a land invalid value. According to the method, the advantages of global attention and local convolution are fused, the proxy model is constructed, and high-precision and physical consistency rapid prediction of the complex river channel flow field is realized.
Owner:SUZHOU UNIV OF SCI & TECH +2

River channel reach morphological feature recognition method based on remote sensing

The invention belongs to the technical field of river reach feature recognition, and particularly relates to a river reach morphological feature recognition method based on remote sensing. Through multi-source remote sensing data fusion analysis, accurate recognition and dynamic monitoring of river channel morphological characteristics are achieved, scientificity and efficiency of river channel treatment are improved, refined data support is provided for river channel ecological restoration and management through river reach classification and construction of a morphological module, and the river channel ecological restoration and management method is suitable for river channel ecological restoration and management. In this way, the intelligent and datamation requirements of river regulation decision making are supported, meanwhile, effective prediction of the river form evolution trend is achieved through time sequence analysis of the repair node and the current node, verification and evaluation of the confidence degree are conducted after the prediction result is output, and therefore the reliability and applicability of the prediction result are ensured, and the prediction efficiency is improved. The prediction result can provide corresponding data support for a river regulation project, the river form change trend can be pre-judged in advance, and a scientific basis is provided for flood control and disaster reduction and water resource management.
Owner:CHINA CONSTR WATER ENVIRONMENTAL PROTECTION CO LTD

River channel self-adaptive desilting system and method based on intelligent water level sensing

ActiveCN121956598AAccurately restore designed water passing capacityImprove the accuracy of dredging operationsWater resource protectionAdaptive controlSensing dataTerrain
The invention relates to the technical field of riverway desilting, in particular to a riverway self-adaptive desilting system and method based on intelligent water level perception, and the method is executed by a central control unit and comprises the four steps of model construction and benchmark calibration, real-time monitoring and siltation diagnosis, precise survey and operation planning and closed-loop execution and model synchronization. The system comprises a central control unit, a water level intelligent sensing array, terrain scanning equipment and dredging machinery, according to the method, the three-dimensional digital riverbed model is constructed, the sedimentation state is dynamically judged in combination with the water level sensing data, an accurate desilting operation scheme is generated, and operation closed-loop control is achieved. According to the method, navigation and ecological riverway dredging requirements are considered, the dredging precision and automation level are improved, the operation cost is reduced, intelligent transformation of riverway management is promoted, and an efficient solution is provided for long-acting treatment of the riverway.
Owner:FUJIAN UNIV OF TECH ENG DESIGN CO LTD +2

Height adjustment structure of shower rod slide

The application discloses a height adjusting structure of a shower rod upper slide seat, which comprises a shower rod and a slide seat arranged outside the shower rod, wherein a socket for placing a shower head is arranged on the slide seat, the socket is located on one side of the shower rod, and the slide seat comprises a slide seat body, an open cavity with an opening arranged at one end of the slide seat body, a through hole communicating with the cavity and penetrating through the slide seat body from top to bottom, the shower rod is arranged in the through hole, and the socket is slidably arranged at the opening; a friction assembly is movably arranged in the cavity and can be in abutting cooperation or separated cooperation with the side of the shower rod away from the socket; the socket is linked with the friction assembly, when the socket drives the friction assembly to be separated from the shower rod along the radial direction of the shower rod; and a reset member is arranged in the cavity and is used for providing a reset force for the friction assembly and the socket. The application does not need to additionally arrange a button or a knob, the slide seat can be driven to slide up and down by directly driving the socket, the structure is simple, the operation is convenient, and the appearance is more simple.
Owner:XIAMEN OCEANS SANITARY WARE CO LTD

River ecological environment quality evaluation and degradation diagnosis method

The invention discloses a river ecological environment quality evaluation and degradation diagnosis method, and relates to the technical field of ecological environment. Comprising the steps of establishing a river ecological environment quality evaluation system; arranging river ecological environment quality monitoring points, determining monitoring frequency and monitoring time, and collecting monitoring point data; analyzing and processing the collected monitoring point data; the river ecological environment quality is evaluated according to the analyzed and processed data, and an evaluation result is obtained; according to the evaluation result, identifying an ecological environment quality degradation river reach, performing diagnostic analysis on the ecological environment quality degradation river reach, identifying a pressure source causing ecological environment quality degradation, and obtaining a diagnostic result; and generating a river ecological restoration and protection management scheme according to the diagnosis result. According to the method, physical, chemical and biological multi-dimensional indexes are integrated, the river ecological environment quality can be objectively evaluated, the degeneration reason of the river ecological environment can be diagnosed, and a scientific basis is provided for river ecological protection, restoration and management.
Owner:CHINA JAPAN FRIENDSHIP ENVIRONMENTAL PROTECTION CENT

Ecological restoration material for polluted bottom mud of rivers and lakes as well as preparation method and application of ecological restoration material

The invention discloses a bottom mud ecological restoration material as well as a preparation method and application thereof. The material is composed of a degradable carrier, a treatment flora and a multifunctional filler. The carrier is porous particles die-cast by corn straws and the like; the treatment flora comprises photosynthetic bacteria, bacillus and nitrifying bacteria; the filler is prepared from non-nitrate type hydrotalcite-like compounds, calcium nitrate, nitrate type hydrotalcite-like compounds and a flocculating agent according to a specific mass ratio. The preparation method comprises the following steps: carrying out pressure casting on the carrier, adsorbing the flora, and rolling the filler to form balls. The restoration method comprises the steps that a river channel is cut off in the dry season to form a closed area, materials are put according to the area ratio of 10: 1 for preliminary restoration, and after standing is conducted for 1-5 days, the materials are put along with water flow according to the area ratio of 2: 1 for deep restoration. Through the physical, chemical and biological synergistic effect, the sediment redox environment can be effectively improved, pollutant release and degradation are promoted, operation is easy and convenient, and the risk of secondary pollution is low.
Owner:HUANJIAN ECOLOGICAL RESTORATION (BEIJING) CO LTD

Mountain river-oriented fish diversified habitat natural shaping and repairing method

The invention belongs to the technical field of ecological restoration, and provides a mountainous river-oriented fish diversified habitat natural shaping restoration method, which comprises the following steps of: determining fishes with a relative important index greater than 5% in a river as target fishes; the habitat factors of the river are screened, the habitat factors with colinearity are divided into a factor group, and only one habitat factor is reserved in each factor group to serve as a representative habitat factor; carrying out modeling on the resource distribution and representative habitat factors of the target fishes by adopting a generalized additive model; screening to obtain a generalized additive model with a minimum akaike information criterion, and determining an optimal habitat factor combination; and determining a restoration scheme according to the habitat factor combination, and adjusting the habitat of the target fish. According to the restoration method, the natural process is simulated to remodel the diversity of the mountain river habitat, the key problems of hydrological connectivity fracture, habitat simplification, engineering and ecological contradiction and the like are solved, and fish population restoration and ecological system self-maintenance are achieved.
Owner:CHINA THREE GORGES CORPORATION +1

Sectional type automatic flushing water-saving closestool water tank device

The invention discloses a sectional type automatic flushing water-saving closestool water tank device. An inner water tank is divided into a brush ring water tank, a strong flushing water tank and a water supplementing water tank through partition plates. The outer water tank internal brushing ring water valve controls the water path to start according to the air pressure change, and water in the outer water tank is pumped by negative pressure to increase the toilet brushing ring; the brush ring function causes the brush ring water valve air pressure to change again according to the water level change of the brush ring water tank, and the brush ring function is closed. A strong flushing valve in the outer water tank starts a strong flushing function on the urinal according to the change of the water level of the strong flushing water tank, and proportionally supplements water to the outer water tank; a water replenishing valve in the outer water tank is delayed to start with the strong flushing function of the strong flushing valve according to the change of the water level of the water replenishing water tank, and the water replenishing valve synchronously replenishes water to the strong flushing water tank, controls the strong flushing valve to be closed, replenishes water to the outer water tank and performs second-time ring brushing, water replenishing and water sealing on the inner surface of the urinal. Compared with the prior art, the technical scheme of the invention can effectively ensure the continuity of the overall control process and the reliability of the overall control of the closestool water tank device.
Owner:陈广超

Method for evaluating restoration effect of small river habitat

The invention relates to a small river habitat restoration effect evaluation method, and aims at solving the problems of habitat damage, habitat fragmentation and the like caused by hydroelectric development to formulate restoration targets of restoring river connectivity, guaranteeing ecological base flow and constructing a stable river ecosystem. The method comprises the following steps: firstly, monitoring a river, then monitoring fish resources and an ecological environment, carrying out special investigation on ecological restoration measures, and finally, constructing an evaluation index system from the dimensions of river connectivity, habitat quality, biodiversity, ecological bearing capacity and the like based on monitoring data. Scientific quantitative evaluation is realized, support is provided for engineering optimization, and river ecological protection and restoration technology development can be promoted.
Owner:CHINA THREE GORGES PROJECTS DEV CO LTD +1

River ecosystem-oriented degradation dominant feature factor identification method

The invention discloses a degradation dominant characteristic factor identification method for a river ecosystem, and particularly relates to the technical field of ecological environment monitoring and system modeling. A space-time tensor model of multi-source ecological observation data is constructed, multi-dimensional dynamic principal component analysis and a spectral clustering algorithm are fused, a high-contribution-degree feature sequence is extracted, and a multi-scale ecological feature association map is constructed; on the basis, interaction weights among ecological variables are defined, an ecological degradation path network is constructed, and an intermediary variable and a response variable are identified. The explanatory force of each feature is further evaluated by adopting a Shapley value method, a dominant feature importance degree matrix is formed, and a driving response model is established in combination with historical intervention measure data, so that scene optimization of a repair strategy is realized.
Owner:HYDROLOGICAL BUREAU OF PEARL RIVER WATER CONSERVANCY COMMISSION MINISTRY OF WATER RESOURCES +1

An ecological restoration system for hardening a bank

The present application relates to the technical field of ecological restoration of bank slope, and particularly relates to an ecological restoration system for hardening bank slope, which comprises a plurality of stone columns embedded and fixed with the bank slope, the stone column comprises a plurality of stone blocks, a clamping block two is detachably inserted and fixed between two adjacent stone blocks, a plurality of bank protection blocks are detachably fixed between two adjacent stone blocks, a water groove three is arranged between the top surfaces of the plurality of stone blocks on the same stone column, a supporting block is slidably placed on the top of the water groove three, and a shaft rod is detachably fixed between the plurality of supporting blocks. In the present application, the supporting frame is rotatably connected to the stone column through the supporting block, a plurality of potted plants are arranged on the supporting frame, the potted plants are beneficial to improve the biological diversity, a floating bucket is fixed at the bottom of the supporting frame, when the water level rises in the flood season, the floating bucket can rotate around the supporting block to lift the supporting frame, thereby preventing the potted plants from being submerged by water and preventing the potted plants from being drowned by water, which is beneficial to ensure the sustainable ecological restoration of the potted plants.
Owner:HUNAN JIANGYU CONSTR CO LTD

Method and device for determining upstream and downstream of river network water conservancy object based on GIS

The invention discloses a GIS-based river network water conservancy object upstream and downstream determination method. The method comprises the following steps: preprocessing river vector data to obtain river network vector data; constructing a river network directed graph by using the river network vector data and the hydraulic supervision object vector data; respectively calculating a static OD cost matrix and a dynamic OD cost matrix according to the edge weight of the river network directed graph; when the weight cost is smaller than infinity, if the flow direction from the starting point to the target point is consistent with the river reach, the target point is downstream relative to the starting point, and if the flow direction from the target point to the starting point is opposite to the river reach, the starting point is upstream relative to the target point. According to the method, the directed graph is constructed according to the river network vector data, the static and dynamic OD cost matrixes are calculated, the upstream and downstream relation between the starting point object and the target point object is calculated, and the efficiency and accuracy of data processing of the hydraulic supervision objects distributed in the river network are improved. The invention further discloses a device for implementing the method, electronic equipment and a storage medium.
Owner:AEROSPACE CLOUD SPACE SPACE INFORMATION TECHNOLOGY (CHONGQING) CO LTD

Flow guide frame, filtering assembly and river water pollution ecological restoration device

The utility model relates to a diversion frame, a filter assembly and a river water pollution ecological restoration device, which belong to the technical field of ecological restoration and comprise a first mounting plate, and a plurality of guide rods are uniformly distributed on one side of the first mounting plate; one end of the supporting rod is connected to the first mounting plate, and the other end of the supporting rod is connected with the protruding section; the guide rods are inclined towards the direction deviating from the first mounting plate and towards the flowing side of the water flow; the whole upheaval section is upwards arched; and the axial leads of the straight rod section, the raised section and the transition section of the same guide rod are positioned in the same plane. The first mounting plate is obliquely fixed to the bank side of a river, the multiple guide rods rise step by step in the water flow direction, the axial leads of the guide rods are located in the same vertical plane, the multiple guide rods are located above the water surface, filamentous algae can be intercepted by the guide rods when passing through the flow guide frame, and the algae slide from the straight rod section to the protruding section to form accumulation and then are treated in a centralized mode. By arranging the flow guide frame, the influence of operation time is avoided, and the working efficiency is not reduced.
Owner:LINYI MUNICIPAL ECOLOGICAL ENVIRONMENT BUREAU LINSHU COUNTY BRANCH