1655results about "Marine site engineering" patented technology

The invention relates to a restoration method of a wetland ecosystem, and aims to improve the biodiversity of a wetland and restore and enhance the ecological function of the wetland through systematic measures. The method comprises the following steps: firstly, evaluating the current condition of the wetland, and identifying specific or endangered species and alien invasive species; secondly, by introducing or protecting specific animal and plant species, the natural habitat is recovered, and the biodiversity of the wetland is improved; thirdly, the water quality and soil conditions of the wetland are improved by adopting technologies such as hydrological regulation and control and vegetation restoration; fourthly, the connectivity of the interiors of the wetlands and surrounding habitats is enhanced, and species migration and gene exchange are promoted. By means of the measures, a damaged wetland ecosystem can be effectively restored, key functions such as water quality purification, flood regulation and carbon storage of the wetland ecosystem can be restored, meanwhile, endangered species are protected, and the ecological value and landscape aesthetics of the wetland are improved.

The invention relates to the technical field of reservoir bedrock anti-seepage grouting, and discloses a reservoir bedrock anti-seepage grouting method which comprises the following steps: acquiring fracture data through geological exploration, and constructing a reservoir bedrock fracture distribution model; simulating a flow path and permeability characteristics of the slurry in the fracture based on the fracture model; the grouting pressure and flow are determined through an optimization algorithm, and a grouting scheme is formulated; screening grouting materials according to fracture characteristics, and analyzing stress-strain and permeability of the grouting materials; a construction process is formulated, the grouting state is monitored in real time, and parameters are dynamically adjusted; and after grouting, carrying out permeation and pressure test to evaluate whether the curing effect reaches the standard or not. Based on the three-dimensional fracture structure modeling and flow field simulation technology, high-precision recognition and dynamic evolution tracking of the fracture permeation path in the complex rock mass of the reservoir bank are achieved, so that grouting hole layout is more accurate, the slurry flow direction is more controllable, and the method is different from a point-selecting grouting mode of a traditional empirical method.

To easily construct a water level prediction model by using a water level prediction model at a water level prediction point in a non-tidal area even in a tidal area similarly to the non-tidal area.SOLUTION: The present disclosure pays attention to that for a water level in a tidal area, an effect of a low tide and a high tide in a river-mouth region is nearly independent from an effect of a water level and precipitation in an upstream area. Then, tidal level data T is subtracted from tidal area water level data E, and the tidal area water level data E is converted into water level data obtained by removing an effect of a tide from the data E. Further, assumed water level data, upstream area water level data U and precipitation amount data R are used to construct a water level prediction model M obtained by removing the effect of the tide similar to a non-tidal area.SELECTED DRAWING: Figure 2

To have a high nature imitation effect of reference point micro inhabitation environment, hold water ecological space heterogeneity of a target water body at the maximum without changing a microorganism / organic feature in a natural water ecological system in the whole construction process, and realize a natural water ecological environmental status.SOLUTION: A selection and construction method of a reference point in interfered submergence type river water ecology includes steps of: dividing a basin basic space unit S1; analyzing an influence on an ecological environment stress of human activity in the basin basic space unit and extracting a water ecological feature S2; selecting a reference candidate point S3; evaluating an aquatic organism status of the reference candidate point S4; constructing a nature imitation reference point S5; and evaluating the aquatic organism status of the nature imitation reference point S6.SELECTED DRAWING: Figure 1

The invention discloses an environment-friendly high-strength water-stop belt and a preparation method thereof, and relates to the technical field of high-molecular compound composition water-stop belts. The environment-friendly high-strength water-stop belt is prepared from the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 40 to 70 parts of reinforcing filler, 10 to 25 parts of environment-friendly plasticizer, 1 to 5 parts of interface modifier, 1.5 to 3.5 parts of vulcanizing agent, 3 to 8 parts of active agent, 1 to 3 parts of anti-aging agent and 5 to 15 parts of flame retardant. White carbon black and calcium carbonate are adopted as reinforcing filler to replace traditional carbon black, and energy consumption and pollution emission in the production process are remarkably reduced. By optimizing the formula and the preparation process, the tensile strength, the elongation at break, the tearing strength and other mechanical properties of the waterstop are remarkably improved. Aluminum hydroxide is added as a flame retardant, absorbs heat during thermal decomposition and forms a barrier layer, so that oxygen is effectively diluted, and fire spreading is prevented.

The invention discloses a method for rapidly optimizing the wave absorption performance of an underwater ecological submerged dike, and belongs to the technical field of ocean engineering, and the method comprises the following steps: taking an oyster reef as a research object, comprehensively considering marine environment factors and ecological submerged reef arrangement which influence the wave absorption performance of the ecological submerged reef, carrying out dimensionless processing, and determining seven independent variable parameters: relative water depth, water depth, water depth, water depth and water depth; the wave steep, the relative immersion depth of the oyster reefs, the relative length of the oyster reefs, the relative distance between the oyster reefs, the riverbed gradient and the number of the oyster reefs are determined. According to the method, nonlinear influences between all variable parameters are considered, a second-order optimal design model is suggested, an information matrix representing how changes of all factors affect variances and covariances of model parameters is calculated, and an optimal design scheme is obtained by maximizing eigenvalues of an inverse matrix. Compared with the traditional full-factor test design, the method has the advantages that the number of design groups is reduced on the premise of ensuring that the test combination is as comprehensive as possible, and the time of physical model experiment and numerical simulation calculation is greatly shortened.

The invention belongs to the technical field of ecological restoration and wetland engineering, and discloses an ecological corridor-based abandoned fishpond ecological restoration method, which comprises the following steps: S1, land forest restoration: planting saline-alkaline tolerant vegetation around an abandoned fishpond and in a land and abandoned fishpond transition area in a layered manner; s2, mangrove forest wetland construction: performing microtopography modification to adjust the bottom mud elevation, and planting mangrove forest plants in a layered manner; s3, ecological corridor construction: constructing an ecological corridor on one side of the abandoned fishpond and the land, and constructing an ecological corridor on one side of the abandoned fishpond and the ocean; s4, ecological monitoring and maintenance: carrying out hydrological, tidal and biological detection regularly; the three-dimensional ecological corridor system of'land forest-mangrove forest wetland-ocean 'is constructed, and the abandoned fish pond is transformed into the mangrove forest wetland, so that not only are biodiversity improvement and ecosystem connectivity realized, but also stable migration and inhabitation space can be provided for terrestrial and aquatic organisms.

The invention relates to a sandy coast back shore ecological restoration multi-objective optimization method based on an NSGA-II algorithm, and the method comprises the following steps: S1, selecting a damaged sandy coast, carrying out the background investigation, and calculating a wave climbing value; s2, determining a vegetation arrangement range of the damaged sandy coast; s3, beach shoulder sand supplement of beach shoulder width is conducted on different areas of the damaged sandy coast, and sand dune sand supplement of an artificial sand dune is conducted; s4, calculating the wind erosion prevention efficiency and the wave erosion prevention efficiency of the dominant vegetation; s5, constructing a sandy coast back shore ecological restoration multi-objective optimization function and constraint conditions; s6, solving the multi-objective optimization function based on an NSGA-II algorithm to obtain an optimal vegetation configuration scheme set; s7, based on actual conditions, selecting an optimal vegetation configuration scheme for planting; and S8, detecting vegetation data after planting, and starting a reseeding program when the survival rate of vegetation is lower than a threshold value. Compared with the prior art, the method has the advantages that the fitness of the multi-power environment is improved, and then the windproof and wave-resistant effects are optimized.

The invention relates to the field of civil engineering waterproof materials, in particular to a nano bentonite-polymer composite material with high salt tolerance and a preparation method thereof, and the nano bentonite-polymer composite material is especially suitable for a sodium-based bentonite waterproof blanket in a saline soil area or a marine environment, and the preparation method comprises the following steps: (1) preparing nano bentonite lamellar colloidal dispersion liquid; (2) introducing and mixing an electrostatic screening agent and a polymerizable monomer; (3) carrying out in-situ free radical polymerization reaction; and (4) post-treatment and finished product preparation. By constructing a three-dimensional interpenetrating hierarchical structure composed of a covalent grafted polymer network, a physically anchored electrostatic screening agent and a stripped bentonite nanosheet layer, effective protection of a bentonite core anti-seepage unit is realized, so that the adaptability and long-term stability of the material under a complex water quality condition are remarkably improved.

The invention discloses a dam underwater seepage point detecting and plugging integrated system and method, and relates to the field of dam safety maintenance. The dam underwater seepage point detection and plugging integrated system comprises a suspension frame and further comprises a sleeve fixedly connected to the suspension frame; the piston disc is connected in the sleeve in a sliding manner; one end of the spring is fixedly connected with the inner wall of the sleeve, and the other end of the spring is fixedly connected with the piston disc; through the synergistic effect of the sealing air bag, the spring piston disc and the conducting ring warning indicator, efficient and reliable plugging is achieved, the sealing air bag expands to fill gaps, water seepage is isolated, equipment is fixed, and the impact resistance is enhanced through the L-shaped design; the spring is matched with the piston disc, so that the gap is uniformly filled with polyurethane, the piston disc moves to supply air to the air bag, and the whole-course sealing stability is ensured; the conducting ring and the warning indicator feed back the plugging state in real time, diving operation of personnel is avoided, and efficiency and safety are improved.

The invention relates to an underwater stirrer and an underwater glue injection system. The underwater stirrer comprises a driving motor, a stirring barrel, a transmission shaft, blades and a bearing seat, the stirring barrel comprises a barrel body and a cover body used for sealing the barrel body, an avoiding hole is formed in the cover body, one end of the transmission shaft is connected with an output shaft of the driving motor, the other end of the transmission shaft penetrates through the avoiding hole and extends into the barrel body, and a mechanical seal is arranged between the transmission shaft and the cover body. The paddle is connected with the transmission shaft and is positioned in the stirring barrel, the bearing seat is sleeved outside the transmission shaft, one end of the bearing seat is hermetically connected with the cover body, a first sealing element is arranged between the bearing seat and the cover body, the other end of the bearing seat is hermetically connected with the driving motor, and a second sealing element is arranged between the bearing seat and the driving motor. The underwater stirrer is more suitable for underwater construction environments.

The utility model provides a leaking stoppage drainage device for water conservancy project management, which comprises a drainage dredging pipe seat, a plugging expansion seat and a controllable valve, the plugging expansion seat and the controllable valve are fixedly arranged on the drainage dredging pipe seat, the controllable valve is communicated with the drainage dredging pipe seat, and the plugging expansion seat is fixedly arranged on the drainage dredging pipe seat. The drainage dredging pipe seat is used for controlling drainage of liquid in the drainage dredging pipe seat; an expansion type plugging and sealing mechanism is adopted, the air bag is rapidly expanded by injecting cement paste, the air bag is tightly attached to a leak, and efficient plugging is achieved. By means of the design, direct contact between internal cement and external water flow is avoided, the scouring influence is reduced, and the durability and reliability of the plugging effect are improved. In addition, the device is high in flexibility and suitable for loopholes of various shapes and sizes, and a powerful guarantee is provided for safe and stable operation of water conservancy projects.

The invention discloses a novel flexible ecological drainage ditch structure and a construction method thereof, belongs to the technical field of drainage ditch construction, and solves the problems of serious deformation and cracking of a traditional concrete drainage ditch. The structure specifically comprises an anti-corrosion layer, a drainage layer and an anti-seepage layer. The seepage prevention layer is arranged at the bottom of the drainage ditch, the drainage layer is laid on the seepage prevention layer, and the anti-corrosion layer is laid on the drainage layer. According to the drainage ditch, the innovative design of combining the anti-corrosion layer, the drainage layer and the anti-seepage layer is adopted, so that a lower seepage body is effectively drained, the ditch body strength is improved, the basic requirements of confluence, quick drainage and seepage prevention of the drainage ditch are met, and the overall shear resistance and erosion resistance of the drainage ditch are improved; the construction method is suitable for construction of loose accumulation body slopes such as slide slag accumulation body slopes, waste slag accumulation bodies and mine dumping sites; the method has the advantages of being high in plasticity, high in terrain adaptability, high in environment flexibility, good in structure flexibility and the like.

The invention discloses a cascade reservoir flood control water level combined application scheduling method and scheduling system, and relates to the technical field of cascade reservoir scheduling, and the method comprises the following steps: dividing into a plurality of sub-regions according to an administrative region, determining a sub-reservoir corresponding to each sub-region, and collecting the rainfall and historical flood discharge data; analyzing the water storage capacity of each sub-region at the moment corresponding to the historical data to form a training data set; constructing a flood season flood discharge prediction model, and obtaining the target flood discharge flowing into the sub-reservoir by using the prediction model; analyzing the water level change in the flood season according to the target flood discharge amount, and judging whether scheduling is needed; and if scheduling is needed, determining a drainage flow combination of each sub-reservoir, setting a constraint condition, and performing optimization through a multi-target genetic algorithm to obtain an optimal drainage flow scheme meeting constraints. According to the scheme, the scientificity, the accuracy and the intelligent level of combined dispatching of the cascade reservoirs are remarkably improved.

The invention discloses reservoir leakage detecting and repairing equipment and method, and relates to the field of dam body repairing devices. Reservoir leakage detecting and repairing equipment comprises a repairing liquid storage tank, repairing liquid grouting equipment and a grouting repairing pipe, the repairing liquid storage tank is connected with the liquid inlet end of the repairing liquid grouting equipment, and the grouting repairing pipe is connected with the liquid outlet end of the repairing liquid grouting equipment; the side grouting repair hole is formed in the side face, close to the bottom end, of the grouting repair pipe and communicates with the liquid conveying pipeline in the grouting repair pipe; the multiple sets of air bags are annularly installed on the grouting repair pipe at equal intervals, and the multiple sets of air bags are located on the upper side and the lower side of the side grouting repair hole correspondingly; through the arrangement of the air bag, auxiliary inspection can be carried out on the crack position in the grouting repair hole, meanwhile, the upper space and the lower space of the side grouting repair hole can be blocked, grouting can be conveniently and intensively carried out on part of cracks, and incomplete grouting repair caused by insufficient pressure is reduced.

The invention relates to the field of grouting equipment, in particular to a repairing and grouting device for water conservancy construction, and provides a repairing and grouting device for water conservancy construction to solve the problems that in the prior art, a constructor needs to insert grouting nails one by one, and construction time is delayed. A placement barrel capable of intermittently rotating is arranged in the shell, a pushing and injecting part capable of moving up and down is arranged on the upper side of the placement barrel, and every time the placement barrel rotates once, the grouting nail, located on the outermost side, of one placement groove corresponds to a pushing barrel, and the grouting nail is pushed out of the placement groove through the pushing barrel; when the device is used, the grouting nails in the placing barrel can be automatically inserted into the grouting holes by operating the control part, the operation step that constructors manually insert the grouting nails into the grouting holes one by one is omitted, manual force application is replaced with mechanical power, and the workload of the constructors is relieved.

A hydraulic engineered cementitious composite (ECC) material and an application thereof are provided. The ECC material includes 25-34 wt % of cement, 23-30 wt % of fly ash, 15-20 wt % of silica fume, 26-32 wt % a fine aggregate, 1.25-1.7% of a composite fiber mesh, 0.1-0.24 wt % of a water reducer, and 0.03-0.07 wt % of a thickener. The composite fiber mesh is prepared by dipping a composite fiber in a water-borne epoxy resin with a curing agent, performing uniform mixing, taking out and spreading the composite fiber, and then cutting or crushing the composite fiber into a small piece of mesh structure; and the composite fiber includes a PVA fiber and a carbon fiber, or a PVA fiber and a basalt fiber, at a weight ratio of (0.3-0.6):1.

The invention relates to the technical field of pile foundation construction, in particular to a long spiral secant pile construction method under water conservancy anti-seepage complex geological conditions, and the construction method comprises the steps that a long spiral pile driver is provided with a first power head and a second power head, a sleeve is pressed downwards through the second power head, and then the first power head is used for driving a drill rod to drill; the sleeve and the drill rod drill down synchronously until the drill bit drills to the elevation of the bed rock surface to form a pile hole; the sleeve is left in the pile hole, the rotary drilling rig is used for drilling the bed rock, a drill rod of the long spiral pile driver is put down to the bottom of the pile hole, concrete is pumped into the pile hole, and when the concrete is poured to the bed rock surface, the drill rod and the sleeve are lifted while the concrete is pumped into the pile hole till pressure pouring is completed. In a complex stratum with a huge thick loose high-permeability sandy gravel covering layer and ultrahigh-strength hard bed rock coexisting, high-precision stable hole forming and collapse prevention are achieved at the same time, hard rock is reliably and accurately drilled to reach the designed depth, and it is ensured that concrete secant piles are tightly engaged to form a continuous and effective diaphragm wall.

The invention discloses a quick-setting high-strength expansive type leakage crack plugging material and method and application, and belongs to the technical field of cement-based material admixtures, the quick-setting high-strength expansive type leakage crack plugging material is prepared by adopting a mixing method, and the quick-setting high-strength expansive type leakage crack plugging material comprises a base material formed by compounding cement, desulfurized gypsum, calcium oxide, alkaline aluminum oxide, calcium formate, hydrated calcium silicate, carboxyl cellulose and a solid polycarboxylate superplasticizer; the active component is formed by compounding polyaluminum sulfate, magnesium sulfate, disodium ethylene diamine tetraacetate, borax and a defoaming agent; the superfine fly ash, the superfine silicon dioxide, the superfine hydroxyapatite, the superfine zinc sulfate, the nano titanium dioxide and the superfine boron nitride are compounded to form a structure regulating functional component. The three components are uniformly stirred by adding water, and then are mixed with an exciting agent to be used for plugging leakage cracks and filling gaps. The leakage plugging material provided by the invention has the advantages of scientific and reasonable composition, simple preparation and application methods, rapid curing, high strength, good durability, micro-expansion and the like, and has good plugging and filling effects on water bursting, water permeation and gas.

The invention discloses a water conservancy dike breach rapid plugging device which comprises a carrying vehicle, a telescopic carrying plate, a telescopic driving mechanism, a pipe pile placing frame, a pipe pile conveying unit, a pipe pile inserting unit and a controller. The telescopic carrying plate is slidably installed on a dragging plate of the carrying vehicle in the transverse direction and is in transmission connection with the telescopic driving mechanism; the controller can drive the telescopic carrier plate to backwards extend out of the carriage through the telescopic driving mechanism; the tubular pile conveying unit comprises a tubular pile base, a supporting frame of a parallelogram structure, a supporting table and a pushing driving mechanism, and the supporting table is fixedly installed on the telescopic carrying plate. The structure is unique, the design is ingenious, the problems of potential safety hazards, low efficiency and poor quality existing in traditional manual wading plugging can be effectively solved, and the labor intensity of workers is reduced. And rapid and effective blocking of the breach is achieved.

The invention relates to a marine environment mass concrete construction and crack repairing method, which comprises the following steps: in a mass concrete construction stage, carrying out aggregate precooling, carrying out layered intermittent pouring by using the precooled aggregate, and carrying out cooling treatment at the same time, so that the internal and external temperature difference is controlled within 20 DEG C; if cracks appear on the mass concrete, a polymer modified cement-based composite material is prepared for repairing, the polymer modified cement-based composite material comprises composite gel, a macromolecular tackifier and aggregate, the composite gel is based on 60%-70% of Portland cement, and 5%-8% of nano silicon powder and 10%-15% of fly ash are doped; the macromolecular adhesive comprises 0.5%-1.2% of polyacrylamide or 2%-3% of epoxy resin emulsion. When the scheme is used for repairing marine mass buildings, the overall viscosity of concrete can be improved, the internal and external temperature difference of the concrete is reduced, and the overall impermeability of the concrete repairing material is improved.

The invention relates to a natural river bank imitating type multifunctional wetland purification system which comprises a hydraulic regulation and control distribution unit, a water quality purification unit and a river bank ecological landform remodeling unit which are connected in series, and water flow sequentially flows through the hydraulic regulation and control distribution unit, the water quality purification unit and the river bank ecological landform remodeling unit. Then the water flows to an external river channel from the river bank ecological landform remodeling unit; the hydraulic regulation and control distribution unit comprises a sewage treatment plant and a water intake pump station, the water quality purification unit comprises at least more than one nature-imitating strengthening system and at least more than one ecological pond, the river bank ecological landform remodeling unit comprises a floodplain, the floodplain is close to a river channel, and the floodplain is located between the whole water quality purification unit and the river channel; the sewage treatment plant is connected with the water intake pumping station, the water intake pumping station is connected with the nearest nature-imitating strengthening system, the nature-imitating strengthening system and the ecological pond which are adjacent to each other are connected, and the water quality purification unit is connected with the river channel.

The invention discloses a quick blocking system for a dike breach, which belongs to the field of hydraulic engineering equipment and comprises a pushing support fixed on a dike through a positioning anchor rod and a fixed arm slidably arranged along the length direction of the dike, and the pushing support is connected with the fixed arm through hydraulic pushing translation equipment. One end of each fixed arm extends to the position above the dike breach, the two fixed arms are parallel to each other, a longitudinal supporting arm is arranged at the end, away from the pushing support, of each fixed arm, the longitudinal supporting arms are arranged between the two fixed arms, and positioning guide seats are arranged on the longitudinal supporting arms and the fixed arms correspondingly; the positioning guide seats are used for positioning the blocking anchor rods, the blocking anchor rods are downwards anchored into a foundation of the embankment breach along the positioning guide seats, and the breach is blocked by throwing geotechnical cloth sandbags or large stones or steel mesh gabions into an area formed by the blocking anchor rods. The problem that when a blocking medium is directly fed into the breach, the blocking medium is not stable under the impact of water flow and is directly washed away is solved.

Embodiments of the disclosure include systems and methods for managing and mitigating erosion in sand features on golf courses. The system can include one or more reservoirs to contain a sand stabilization compound and water, mixers to create a mixed solution, and a distribution subsystem to apply the solution onto golf course sand features. The mixed solution can enhance the stability of sand traps and bunkers, maintaining their aesthetic appeal and playability while reducing maintenance costs. The system can be integrated into existing irrigation systems or applied using portable or vehicle-mounted units, providing flexibility and efficiency in golf course maintenance.

The invention relates to the technical field of underwater operation equipment, solves the problems that existing dam underwater crack repairing depends on divers or complex equipment, the automation degree is low, the construction period is long, the comprehensive cost is high and the adaptability is poor, and particularly relates to concrete dam underwater crack repairing and leaking stoppage equipment which comprises a robot for underwater cruise, and the robot comprises a machine body; the cruise vision module comprises a foresight navigation lens group, a look-around lens group, a bottom wide-angle lens, an active illumination system, an obstacle avoidance sonar system and a topographic mapping sonar; the crack detection module comprises a crack scanning ultrasonic detector, a high-resolution strip-shaped scanning lens group, a laser ray scanner, a multispectral imager, a laser distance measuring sensor, a water flow sensor and an attitude sensor, the crack repairing module comprises two groups of mechanical arms for punching and grouting, and the central controller controls the robot to execute. Crack filling, structure bonding recovery and long-acting sealing are achieved, and meanwhile the construction difficulty and the comprehensive cost are reduced.

The invention discloses a rapid plugging device used after collapse lifting and a plugging method. The rapid plugging device comprises a plurality of frames which are connected with one another. Each single face of each single frame comprises an upper chord, a lower chord, vertical rods and inclined rods, the vertical rods connect the two ends of the upper chord and the two ends of the lower chord to form a frame-shaped structure, the inclined rods are obliquely connected into the frame-shaped structure, the four single faces serve as side faces and are perpendicularly welded to one another to form a cube structure, and iron gauzes are welded to the peripheries of the four side faces. The end parts of the upper and lower chord members are welded with female and male joints for transverse connection, and the top and bottom parts of the upper and lower chord members are provided with screw holes for vertical connection. According to the method, the water flow speed of the breach can be effectively reduced, and good construction conditions are provided for follow-up blocking and reinforcing of the burst embankment.

The utility model discloses a geosynthetic clay liner paving device which comprises a frame, a geosynthetic clay liner rolling platform, a geosynthetic clay liner scraping plate and a geosynthetic clay spreading box, the frame comprises a pin shaft connecting cylinder, a structural frame, wheels and a tail cross beam, and a gap allowing the waterproof blanket to penetrate through is formed between the tail cross beam and the structural frame; waterproof blanket rolling platform

To efficiently implement countermeasures against trouble caused by underwater particles.SOLUTION: An underwater particle countermeasure support system 100-1 includes an underwater particle image analyzer D3 and an underwater particle countermeasure support device D5. The underwater particle image analyzer D3 photographs collected measurement water, obtains image data of the measurement water, and measures underwater particles contained in the measurement water based on the image data of the measurement water. The underwater particle countermeasure support device D5 outputs analysis results used for countermeasures against trouble caused by underwater particles based on measurement results of the underwater particles transmitted from the underwater particle image analyzer D3.SELECTED DRAWING: Figure 1

The invention discloses anti-crack self-repairing mass concrete and application thereof, and belongs to the technical field of concrete.The anti-crack self-repairing mass concrete comprises a reinforcement cage and concrete for pouring the reinforcement cage, and an anti-crack self-repairing fiber net is bound to the outer surface of the reinforcement cage; the anti-cracking self-repairing fiber net takes latticed fiber as a core, a microbial repairing agent hydrogel layer, a polymer layer, a nutrient substance hydrogel layer and a polymer outer layer are sequentially loaded on the outer surface of the anti-cracking self-repairing fiber net, the polymer layer and the polymer outer layer are compositions of polylactic acid and polystyrene, and the thickness of the polymer outer layer is larger than or equal to 900 micrometers. The anti-crack self-repairing fiber net is added into the mass concrete, the crack condition of the mass concrete is reduced, the microbial repairing agent is released in a response mode when the crack is generated, the crack of the concrete is automatically filled, self-repairing of damage of the concrete structure is achieved, and the service life of the concrete structure is prolonged.