471 results about "Coastal zone" patented technology

The invention discloses an accompanying robot path planning method and system based on obstacle virtual expansion. The method includes a step of constructing an environment map, namely a step of constructing a two-dimensional occupancy grid map according to an actual scene, with each grid being labeled as an obstacle zone or a walkable zone; a step of setting initial coordinate positions of an accompanying robot and a movable target in the grid map; a step of constructing a sliding window for the robot; a step of subjecting the obstacle zones to expansion processing, namely a step of performing initial expansion on grids where an obstacle is according to a shortest distance between the center of the robot and a body edge, determining the number of grid layers expanded on the basis of the minimum impassable zone, adopting the grids in the expanded zones as obstacle virtual expansion grids, and labeling the grade of danger of obstacle influences on the obstacle virtual expansion grids; and a step of planning a path for the accompanying robot based on an A* algorithm and an incremental path planning process. Incremental path updating is performed by adopting a path of the last moment,thus saving path planning time and increasing the response speed of the accompanying robot.

The invention discloses a method for full automatic extraction of water remote sensing information in a coastal zone and belongs to the field of methods for full automatic extraction of remote sensing information. The method comprises the steps of cutting a remote sensing image, roughly extracting water information and finely extracting water information, wherein scale conversion is performed twice in the process; the scale conversion performed at the first time is the scale conversion from bottom to up for converting an image element to an object; and the scale conversion performed at the second time is the scale conversion from up to bottom for converting the whole area to a local part. Compared with the prior art, the invention realizes a method combining geological knowledge with data mining in a scale conversion frame. The method is characterized by zero sample and zero parameter, and can be automatically operated completely. The method provided by the invention is suitable for various environments in a coastal zone of each sea area, has better stability, has higher precision of extraction results, has better extracting completeness and continuousness for detailed information than the traditional method, and can be directly applied to maintaining and updating the remote sensing thematic information of all-level national foundation geographic information databases.

The invention discloses an application method of an indoor simulation device for the migration and the conversion of pollutant in an artificial shore zone. According to the invention, in the lateral supply direction of a three-dimensional seepage groove, ground water is supplied on one side where a stream flows to simulate the boundary condition of the groundwater flow in a field zone; reasonably proportioned solution is supplied on the other side to simulate the seawater in a coastal zone; and the interaction of salt water and fresh water realizes the real simulation of seawater and terrestrial water. By adopting the device provided by the invention, the physical simulation of the artificial shore zone is simulated to the greatest extend, a large-scale artificial coastal zone is downsized to a small-scale indoor physical simulation device under the guidance of geometric similarity theory, the comprehensive influences of adjustable water level height, saltwater and fresh water interaction, waves, rainfall and external contamination are comprehensively considered, the real simulation of the artificial coastal zone is ensured, and a foundation is laid for the numerical simulation of the artificial coastal zone and the late pollution abatement.

The invention discloses a coastal zone ecological security evaluation method, comprising the following steps: 1. Screening coastal zone ecological security evaluation indicators based on marine health index and urban ecological security; 2. Constructing a coastal zone ecological security evaluation index system based on a PSR model; 3. Index data collection and dimensionless; 4. Analytic hierarchy process to determine the subjective weight of the evaluation index; 5. Entropy value method to determine the objective weight of the evaluation index; 6. Determine the comprehensive weight of each index; 7. Coastal ecological security index calculation and evaluation. The evaluation method of the present invention can well reflect under the background of rapid urbanization and industrialization and large-scale human development activities, the safety status of the ecological environment in the coastal zone and the main pressure factors it bears, and can provide a basis for the protection of the ecological environment in the coastal zone area in the future. and management provide a certain theoretical basis.

The invention relates a treatment and utilization technology of saline soil resources, in particular to a treatment and utilization method of muddy seashore saline soil. The method comprises the following steps of: establishing a water supply system consisting of a fresh water well, a water pump and a water supply pipe; excavating a salt leaching drainage ditch so as to establish a drainage salt leaching system; applying a cow dung and crop stalk fertilizer and a phosphogypsum soil and fertility improving fertilizer; with a small raised field as unit, irrigating fresh water to wash and leach salt; and planting and maintaining vegetation through cultivating the land by machine, sunning the upturned soil, planting the vegetation and irrigating the vegetation, wherein a planting technology with gradient increasing salt tolerance is adopted in planting the vegetation. According to the invention, for the salinity and structural characteristics of the muddy seashore saline soil, the muddy seashore strongly salined soil in the coastal zone is treated and utilized in combination with engineering measures, physical measures and chemical measures on the basis of salt tolerant plant appraisal; and The treatment and utilization method of the muddy seashore saline soil provided by the invention has the advantages of simplicity in operation, resource conservation, soil treatment and utilization cost of less than 166.21 yuan/m2 and plant survival rate of more than 90%.

The invention provides a spatial valuing method of design air speed of an overhead transmission line of a coastal region. The method comprises the steps of 1) collecting, reviewing and correcting materials; 2) analyzing tropical cyclone characteristics of the coastal region; 3) calculating the theoretic long-term air speed through meteorological observatory; 4) performing supplementing calculation through an automatic meteorological observatory; 5) performing spatial interpolation and optimizing of the designed air speed. According to the method, the data of an ocean station and the automatic meteorological observatory are fully utilized, the data of the ocean station are introduced to clearly reflect the trend of the air speed changing from the coastal region to the inland; the data of the automatic meteorological observatory are introduced to provide more design air speed spatial interpolation points, and therefore the representation of the basic meteorological data of the transmission line project can be improved; in addition, the reasonability and stability of the spatial distribution of the design air speed can be ensured by the optimal space interpolation method. The spatial valuing method of design air speed of the overhead transmission line of the coastal region is accurate in air speed calculation result.

The invention provides a carbon dioxide capturing and seawater desalting co-production device and method based on a hydrate method, belonging to the technical field of hydrate application. The carbon dioxide capturing and seawater desalting co-production device comprises a gas-water conveying part, a hydrate generation and decomposition control part and a product storing and discharging part. The hydrate generation and decomposition control part comprises a front-grade structure and a rear-grade structure; a hydrate generation condition is gas supersaturation. A first-grade hydrate generates residual gas and decomposed water to be used as second-grade raw materials; after two grades of treatment, fresh water is obtained and stored; N2 is discharged to atmosphere by a gas exhausting safety valve; carbon dioxide is introduced into a gas tank to be stored. The carbon dioxide capturing and seawater desalting co-production device is applicable to the co-production of carbon dioxide capturing and seawater desalting of a fossil fuel power station in a coastal region, so as to meet the requirements of the carbon dioxide capturing of a smoke CO2/N2 power station; a heat exchanger is used for pre-cooling so that the cold loss is reduced and the energy utilization rate is improved; the reaction speed is increased by high-speed agitation in a hydrate generation process; emissions comprise the N2 and concentrated seawater and have no pollution to the environment.

The invention discloses a combination measurement method for high precision position, azimuth angle and pitch angle, and a device thereof; a measurement basic line consists of measurement marking points where two satellite receiving antennas are arranged; a dual-system satellite positioning receiver plate and a beacon receiver plate synchronously receive the signals of a first satellite antenna and a beacon antenna; the dual-system satellite positioning receiver plate synchronously receives the digital signals of the beacon receiver; a GPS receiver plate synchronously receives the signals of a second satellite antenna; the first and second satellite antenna signals and beacon signals are synchronously calculated so as to precisely measure the three-dimensional position where the satellite antenna is arranged and measure the azimuth angle and pitch angle of the antenna basic line under geographic coordinates. The method and the device integrate the dual-system satellite positioning, GPS, beacon receiver plate and computer; the device is provided with a liquid crystal display screen, two satellites and a beacon receiving antenna outside the box, ensures the positioning precision more than 8 meters, receives beacon differential signals at coastal areas, leads the precision to be more than 1 meter and has the directional precision more than 0.1DEG under the basic line of 3 meters.

A waterproof and corrosion-resistant coating for a coastal region is characterized by being prepared from a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 20-40 parts of epoxy resin, 0.1-1 part of graphene, 30-50 parts of powder, 1-5 parts of an auxiliary, and 10-30 parts of deionized water; the component B is prepared from the following raw materials in parts by weight: 5-10 parts of an amine curing agent, 1-2 parts of an auxiliary and 5-10 parts of deionized water. The waterproof and corrosion-resistant coating for the coastal region has the advantages of good water resistance, high chloride penetration resistance, good alkali resisting and salt corrosion resisting properties and the like, and is environmentally friendly and odorless, meanwhile, the preparation method is simple, and the waterproof and corrosion-resistant coating can be scraped and can also be sprayed during construction.

The invention relates to the field of a cable material, and in particular discloses an oil-proof and anti-corrosion polyvinyl chloride (PVC) cable material and a preparation method thereof. The oil-proof and anti-corrosion PVC cable material consists of the following components in parts by weight: 100 parts of PVC resin, 15-40 parts of rubber, 40-65 parts of a plasticizer, 30-55 parts of calcium carbonate, 5-12 parts of a heat stabilizer, 1.5-4 parts of a lubricant and 1-2 parts of an antioxidant. The prepared oil-proof and anti-corrosion PVC cable material disclosed by the invention is compatible with temperature resistance, cold resistance, oil resistance and corrosion resistance, and overcomes shortcomings of an existing material; the cable material is suitable for cold region and coastal region.

The invention provides a method for controlling data quality of an automatic meteorological station based on strong weather process correction. The method solves the problems of false judging and missed judging of the traditional quality control method, and can obviously improve the reliability and accuracy of the quality control of the automatic meteorological station; especially for China southeast areas and coastal regions with frequent occurrence of extreme weathers, a smaller judging threshold value can be adopted, so as to realize more accurate judging, and effectively identify the false judging caused by local strong weather process (especially cold front and warm front crossing regions). The method has the advantages that by adopting the secondary reliability test correction, the false judging on the tested correct records caused by false records of the adjacent stations in the test calculation process is effectively avoided, and the accuracy of the quality control is further improved; the more accurate weather actual monitoring data sources are provided for a meteorological service system, and the accuracy of weather precast is further improved.

The invention discloses a simultaneous desulphurization and denitration device for seawater smoke with a membrane absorption method. The device comprises at least one level of hydrophobic hollow fiber membrane absorber. A process of the device comprises steps as follows: firstly, nitric oxide in the smoke performs an oxidizing reaction to generate nitrogen dioxide, and the smoke and a seawater-based absorbent enter a shell pass and a tube pass of the hydrophobic hollow fiber membrane absorber respectively; SO2 and NOX in the smoke and the seawater-based absorbent perform fast interface reaction through membrane wall micropores, and a reaction product is moved away timely, so that simultaneous desulphurization and denitration of the smoke are realized; and a desulphurized and denitrated absorption liquid is treated and discharged after the absorption liquid is up to the standard. According to the process, two phases of gas and liquid are not directly contacted, the flowing speed is independently controlled, the adjusting range is wide, and problems such as serious equipment corrosion, heavy metal pollution hidden danger and the like, which exist in a conventional seawater desulfurization process, can be avoided; and impact of smoke containing high-concentration pollutants can be flexibly coped with, the degree of automation is high, the operation and the maintenance are convenient and fast, and the device and the process are suitable for upgrading and reconstruction of boilers in a coastal area and other desulfurization and denitration processes which produce waste gas.

The invention relates to a control method of spartina alterniflora, belonging to the technical field of ecological engineering. Spartina alterniflora is artificially introduced in China in the 1980s, and plays a positive role for damping waves, protecting slopes, promoting deposition and reclaiming lands on Chinese coastline, however, as an alien invasive species recognized internationally, the population characters of powerful breeding and rapid extending ability of the spartina alterniflora bring a series of negative effects to the natural wetlands ecosystem of Chinese coastal tidal land and the regional biodiversity; and control of the spartina alterniflora is already a universal problem. The prior single physical, biological or chemical control method has the disadvantages of low efficiency, high environmental pollution risk, low ecological safety, high cost and unobvious control effect. The invention overcomes the disadvantages of the prior preventing and controlling techniques, and utilizes the comprehensive control method of cradling and water level regulating, eradicates the invasive species and controls the growth and rapid extension of the invasive species through restraining the growth of spartina alterniflora, plays an active restoring role to the ecological system destroyed in large areas, and provides an efficient path for preventing spartina alterniflora from spreading extensively in coastal areas.

The invention provides a shipborne water bank line overwater and underwater integrated measurement system integrated method; integration of hardware of a measurement system is realized through design of a multi-sensor lift platform of an integrated mapping device, and requirements of changing sensor upper and lower positions under different operating conditions of a measurement ship are met. The system designs a data acquisition display control software framework to realize multi-sensor collaborative data acquisition, point cloud real-time display and the like. Through point cloud data preprocessing, data interpolation, spatial registration and other steps, multi-source data are subjected to fusion and resolution, so as to obtain a point cloud product for solving problems of difficult-and-inappropriate-to-reach island topographic measurement and marine unit coastal zone and mud flat topographic survey. The method realizes water bank line overwater and underwater integrated measurement, overcomes limitation of a traditional measurement technology, greatly improves the efficiency of measurement, and provides a bran-new measuring technological means for high-precision three-dimensional measurement problems required by wisdom navigation channels, digital water conservancy, wharfs, bank lines, off-lying sea islands and various engineering construction.

The invention discloses a cementing material prepared from fly ash and a preparation method thereof. The preparation method of the cementing material comprises the following steps: milling 62-78 parts by mass of fly ash, 22-38 parts by mass of lime and 0.5-2 parts by mass of excitant to obtain an admixture of which the 80 mu m screen residue is less than 5%, adding 150-250 parts by mass of water, stirring to obtain a uniform raw slurry, carrying out hydrothermal treatment on the raw slurry at 90-98 DEG C for 8-16 hours, dewatering in a filter press to obtain a hydrothermal synthesis block, calcining at 750-950 DEG C for 30-120 minutes, and cooling with air to obtain clinker; and milling 92-95 parts by mass of clinker, 5-8 parts by mass of gypsum and 0.2-1.5 parts by mass of retarder until the 80 mu m screen residue is less than 4%. The cementing material can utilize low-grade fly ash, and has the advantages of high utilization ratio of fly ash, low calcination temperature and low heat loss. The product has the characteristics of quick setting and hardening, high long-term strength and high sulfate attack resistance. The cementing material is especially suitable for tunnel, underwater, alkaline land and coastal area engineering.

The invention discloses a sea chart aquiculture area recognition method based on a multispectral remote sensing image. The method comprises the following steps of 1, performing image fusion on the multispectral remote sensing image and a high-resolution panchromatic image of a shallow water area of a coastal zone; 2, using a local space correlation statistical index to describe aquiculture area textures of the fused high-resolution multispectral image acquired in the step 1; 3, building a support vector machine classification model, using an operation result acquired in the step 2 to serve asa texture band and input into a classification model together with the fused high-resolution multispectral image for classification, and thus recognizing offshore floating rafts and net cage aquiculture areas; and 4, registering the remote sensing image with the sea chart after classification, performing pattern spot embedding on an aquiculture area extraction result by comparing with the sea chart, thus achieving identification of the aquiculture area on the sea chart. According to the method provided by the invention, the offshore aquiculture area can be objectively, accurately and dynamically monitored, and the method and the technical support are provided for further developing navigation monitoring and investigation work of distribution of the coastal aquiculture areas.

The invention relates to a steel rail material, in particular relates to a corrosion-resistant microalloyed steel, and aims to solve the technical problem that the corrosion-resistant microalloyed steel is not provided. The corrosion-resistant microalloyed steel is prepared from the following components by weight percent: 0.73% to 0.85% of C, 0.30% to 0.90% of Si, 0.80% to 1.20% of Mn, 0.20% to 0.40% of Cr, 0.30% to 0.50% of Cu, Ni accounting for one half to two thirds of the content of the Cu, 0.03% to 0.05% of P, less than or equal to 0.025% of S, at least one element from 0.04% to 0.12% of V, 0.02% to 0.06% of Nb or 0.005% to 0.05% of Re, and the balance of Fe and inevitable impurities. The microscopic structure of a steel rail product is formed by pearlite and a trace quantity of ferrites, wherein the tensile strength of the steel rail product is greater than or equal to 1000MPa, so that the steel rail product is good in marine environment corrosion resistance and atmospheric environment corrosion resistance. Thus, the steel rail product is suitable for coastal regions and tunnels with a high relative humidity.

The invention discloses a method for constructing a multi-stage subsurface flow constructed wetland system, and the method comprises the following steps: (1) selecting a littoral zone with a slope as a wetland pond or digging and backfilling to get a wetland pond with a slope; (2) grading and filling a matrix, namely designing stages according to the pollution load and the height difference of slope, and filling the matrix in each stage of the wetland; (3) arranging drainage holes, water outlet holes and water inlet holes; (4) planting plants, namely planting the plants on each stage of the wetland respectively. The method disclosed by the invention has the following beneficial effects: (1) the system constructed by the method has no influence on the coastal zone structure of a landscape water body. (2) the system constructed by the method has a better purification effect on water flowing into rivers and water contaminated by the landscape water body, especially has an obvious purification effect on pollutants such as SS (Stainless Steel), oil and COD (Chemical Oxygen Demand) and has a good removal effect on heavy metals, TN and TP. (3) the system constructed by the present invention can integrate the purification function with the greening of coastal zones, so that the diversity of landscape is enriched and the overall landscape effect is improved.

The invention discloses an indoor simulation device for the migration and the conversion of pollutant in an artificial shore zone. According to the invention, in the lateral supply direction of a three-dimensional seepage groove, ground water is supplied on one side where a stream flows to simulate the boundary condition of the groundwater flow in a field zone; reasonably proportioned solution is supplied on the other side to simulate the seawater in a coastal zone; and interaction of salt water and fresh water realizes real simulation of seawater and terrestrial water. By adopting the device provided by the invention, the physical simulation of the artificial shore zone is simulated to the greatest extend, a large-scale artificial coastal zone is downsized to a small-scale indoor physical simulation device under the guidance of a geometric similarity theory, the comprehensive influences of adjustable water level height, saltwater and fresh water interaction, waves, rainfall and external contamination are comprehensively considered, the real simulation of the artificial coastal zone is ensured, and a foundation is laid for the numerical simulation of the artificial coastal zone and the late pollution abatement.

The present invention relates to alumina producing technology, and is especially red mud stacking method. During alumina production in coastland, alkali in red mud is neutralized with sea water, neutralized mud slurry is solid-liquid separated, the separated red mud is discharged to storage yard in sea bank to make land, the land is treated for use as dock and harbor freight yard, etc, and the separated liquid is drained to sea. The said method has no environmental pollution, and can save land and provide land making material.

The invention discloses a physical model testing system and method for landform evolution of a tidal flat-tidal creek system, and belongs to the technical field of landform evolution tests of the tidal flat-tidal creek system. A physical model comprises a tidal flat-tidal creek simulation area, a water circulation system, a water level measurement and control system and a microrelief laser scanner, and can realistically simulate a tidal flat-tidal creek landform evolution process of a coastal zone. The development and evolution rules of the tidal flat-tidal creek system and the change rules of the flow velocity with the water depth are obtained by acquiring tidal flat-tidal creek topographic data of all testing stages, a preset water level process and an actual water level process of a tidal flat-tidal creek simulation zone and trace particle movement images recorded by a camera in a testing process.

The invention relates to a steel rail material, and in particular relates to a marine environment corrosion-resistant steel rail. The technical problem to be solved by the invention is to provide a marine environment corrosion-resistant steel rail. The marine environment corrosion-resistant steel rail is prepared by adopting a heat treatment method comprising the following steps: performing accelerated cooling on the steel rail which is subjected to hot rolling and is positioned in an austenitic phase area at a cooling speed of 2-5 DEG C/s; stopping accelerated cooling until the temperature of a rail head tread is reduced to be less than 480 DEG C, and air-cooling to room temperature to obtain a steel rail finished product, wherein a microscopic structure of the steel rail finished product is a pearlite consisting of lamellar ferrites and cementite alternately distributed among the lamellar ferrites; the separation distance among pearlite sheets is not more than 120nm; the tensile strength of the steel rail finished product is more than or equal to 1200MPa, and the elongation percentage of the steel rail finished product is more than or equal to 10%. The steel rail disclosed by the invention is capable of resisting marine environment corrosion, has a corrosion rate of less than 1/2 of that of carbon and ordinary microalloyed steel rails under equal conditions in a marine environment, and is suitable for application in heavy haul railways with high transportation capacity and high axle load in coastal regions.

The invention discloses a tidal-reach ecological-environment water demand amount calculation method. Requirements of a tidal reach for maintaining basic river ecological-environment functions and satisfying water-salt balance, percolating recharging and river dilution and self-purification functions are considered on the basis of clarifying a tidal-reach ecological-environment water demand amountconcept, and composition of tidal-reach ecological-environment water demand amounts is clearly defined; an ecological-environment water demand amount model of the tidal reach on the basis of water quality consideration is constructed, and an ecological-environment water demand amount of the tidal reach on the basis of water quality consideration is calculated; an ecological-environment water demand amount model of the tidal reach on the basis of silt scouring and harbor protection consideration is constructed, and an ecological-environment water demand amount on the basis of silt scouring andharbor protection consideration is calculated; a basic riverway ecology water demand amount demanded by the tidal reach is determined on the basis of long-series flow data; and finally, a riverway ecological-environment water demand amount of the tidal reach of a coastal area is determined through comparing the ecological-environment water demand amount demanded by the tidal riverway in consideration of a water quality factor and the ecological-environment water demand amount demanded in consideration of silt scouring and harbor protection.

The invention discloses a method for forming suitable land for mangrove forests on gravel beaches. By determining the target soil thickness, determining the boundaries of excavation and filling, mechanical trenching, filling implementation, leveling of fill, artificial tidal ditch construction and other key steps, engineering measures are taken to increase soil for gravel beaches, which can rapidly provide the soil, hydrology, elevation and other conditions needed to meet mangrove growth; thus suitable forest land for mangrove is built up. Practice has shown that the application of the presentinvention can realize the formation of mangrove suitable forest lands on gravel beaches, thereby increasing the success rate of afforestation, expanding mangrove restoration areas, increasing blue carbon, improving the ecological conditions of coastal areas, improving the capability of disaster prevention and disaster reduction at the base of rock and rock and promoting sustainable development incoastal areas.