207 results about "Water erosion" patented technology

The invention provides a numerical simulation method, system and equipment for the calcium dissolution process of a concrete water pipe and a medium, and belongs to the technical field of computer aided design optimization. According to the calcium dissolution mechanism under flowing water erosion, the law of conservation of mass and the Fick second law, a variable coefficient transmission model of the dissolution process of the calcium ions in the water delivery concrete pipe is established by combining the solid-liquid equilibrium relationship of calcium in the concrete, and the model not only considers the influence of porosity and pore tortuosity change caused by dissolution on the diffusion coefficient of the calcium ions in the concrete, but also considers the influence of porosity and pore tortuosity change caused by dissolution on the diffusion coefficient of the calcium ions in the concrete. The influence of pipe inner wall boundary movement caused by concrete calcium corrosion damage at different water flow speeds on the calcium ion transmission process is also considered; and carrying out numerical solution on the established variable coefficient calcium ion dissolution transfer equation by using a finite difference method. Through verification, a prediction result of the variable coefficient transmission model is consistent with a test result and an existing literature test result, and the calcium corrosion evolution rule and the service life of the underground concrete water pipe can be accurately evaluated.

The invention discloses a slope-to-terrace erosion gully treatment method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining the surface elevation data of a to-be-slope-to-terrace region, and obtaining first topographic data; simulating a runoff path and a runoff depth of a terrain corresponding to the first terrain data under a rainstorm condition by adopting a preset water erosion simulation model, and predicting a development site of the erosion gully; and laying an erosion gully treatment scheme for the development site. The method comprises the following steps: acquiring first topographic data of a to-be-changed-to-terrace area, simulating rainstorm weather for the first topographic data by using a preset water erosion simulation model, scouring the first topographic data to form a runoff path and a runoff depth, further predicting that erosion gullies are possibly formed at positions, and then arranging erosion treatment schemes for the positions, the problem that the erosion gully is not effectively treated in the prior art is solved.

The invention discloses a cold region land surface process river water and sediment model construction method, which comprises the following steps: selecting a target research drainage basin, extracting a drainage basin range ROI (Region of Interest), and collecting water and sediment data and related basic data in the drainage basin range; calculating a thermal erosion amount caused by temperature rise in the river reach, a snow melting erosion amount caused by snow melting, a water erosion amount induced by rainfall and a river ice erosion amount caused by ice running or flow ice scraping erosion of river ice in winter and spring; selecting landform characteristic parameters according to a river flow direction to construct a sediment transport coefficient of a river reach, establishing a cold region river water and sediment model according to the sediment transport coefficient and each erosion source item, and obtaining a sediment content simulation result based on the established cold region river water and sediment model; and evaluating the simulation performance of the model based on the established evaluation index. The method can dynamically respond to the erosion sand production and runoff sand transportation process of the cold region, provides timely and high-precision sand content calculation, and has important significance on water and soil conservation management and water and sand risk regulation and control of the cold region.

The invention discloses a steam turbine last-stage blade aging evaluation method based on the relation between the water erosion degree and the hardness. Sampling observation is conducted on different-degree water erosion parts of the steam inlet side of a steam turbine last-stage blade serving for a long time, and the hardness and the water erosion pit depth of the steam turbine last-stage blade are measured; fitting the measured data points by taking the depth of the water erosion pit as an X axis and the hardness of the water erosion sample as a Y axis to obtain a corresponding function relation curve of the water erosion degree and the hardness; the aging state of the last-stage blade of the steam turbine is evaluated by measuring the water erosion depth of the last-stage blade and then calculating the hardness of the last-stage blade. According to the steam turbine last-stage blade aging evaluation method based on the relation between the water erosion degree and the hardness, the real-time hardness of the position where the water erosion pit is located is calculated by measuring the depth of the water erosion pit online in real time, the operation service state and the aging degree of the steam turbine last-stage blade serving for a long time can be evaluated, operation is easy, cost is low, and the method is suitable for popularization and application. The evaluation accuracy is high, the stability is good, and convenience and rapidness are achieved.

The invention discloses a laser additive repairing method for 17-4PH steam turbine blades, and relates to a laser repairing method for steam turbine blades. The method aims at solving the technical problem that in existing laser additive 17-4PH turbine blade repairing, the difference between the thermal expansion coefficient of Co-based corrosion-resistant alloy and the thermal expansion coefficient of 17-4PH alloy is large, and consequently the interface performance is reduced after repairing is conducted. According to the laser additive repairing method for the 17-4PH steam turbine blade, due to the fact that 17-4PH is poor in water erosion resistance, Co-based alloy powder is used for preparing a water erosion resistance structure, on the basis, in consideration of the problem that the performance difference of the Co-based alloy powder and the 17-4PH material is large, a powder component gradient transition mode is adopted, and the water erosion resistance of the 17-4PH steam turbine blade is greatly improved. The problem of low interfacial strength during direct transition is solved, the binding capacity of the Co-based water erosion resistant layer and the 17-4PH matrix is improved, and finally the service time of the 17-4PH blade is prolonged.

The invention relates to a method for preparing a cement admixture resistant to mine water erosion by microwave synergistic chemical modification of fly ash, and belongs to the technical field of industrial solid waste recycling and building materials.According to the method, fly ash particles are mechanically activated and crushed, and a composite modifier treatment and gradient microwave activation technology is combined, so that the cement admixture resistant to mine water erosion is prepared; the activity of the fly ash and the erosion resistance of the cement-based material are obviously improved. The preparation process comprises the following steps: carrying out multi-stage mechanical grinding on the fly ash to obtain ultrafine powder; adding a composite modifier containing a mineral active component, an organic-inorganic composite modifier and a nano functional material for chemical activation; microwave irradiation and nitrogen quenching are adopted to cooperatively process and reconstruct the microstructure of the material; and finally forming through a microwave-steam coupling curing process. The obtained cement admixture can effectively solidify corrosive ions in mine water, improve the durability of traditional cement in a complex ion environment, and realize bulk resource utilization of fly ash solid waste.

The present disclosure relates to the field of slope soil protection, and particularly relates to a modified soil ecological base material for ecological slope protection, a preparation method and application thereof; the modified soil ecological base material is used in high-cold high-humidity high-altitude areas; the modified soil ecological base material comprises the following: an anti-skid anti-ultraviolet freeze-thaw resistant layer; and a soil adaptive layer; wherein the anti-skid anti-ultraviolet freeze-thaw resistant layer comprises modified plant fibers and an anti-ultraviolet freeze-thaw resistant composite material; the soil adaptive layer comprises a water-absorbing composite material. The present disclosure prepares a modified soil ecological base material which has good freeze-thaw stability, excellent water erosion resistance and water retention performance, is eco-friendly and degradable, and is used for ecological slope protection in high-cold high-humidity high-altitude areas.

The invention provides a preparation method of a water-erosion-resistant coating of a last-stage blade of a steam turbine, an electric clamp device and the last-stage blade of the steam turbine. The preparation method comprises the following steps: spraying the coating on the surface of a blade body layer by layer by adopting a hypersonic flame spraying process; after each coating is sprayed, the two electric clamping devices are installed at the two ends of the coating correspondingly; a back electric clamp of the first electric clamp device is contacted with the blade body, and a front electric clamp is contacted with the coating; a back electric clamp of the second electric clamp device is in contact with the coating, and a front electric clamp is in contact with the blade body; the porosity of the coating is controlled based on the volume resistivity, area and thickness of each coating, the retention time of the electric clamping device and the current of the electric clamping device. According to the preparation method disclosed by the invention, the porosity of the coating is improved, the absorption capacity of the coating is improved, and collision of water drops to the blade body is reduced, so that damage to the metal blade body is reduced, meanwhile, the time of water staying on the blade body is shortened, corrosion of water to the blade body is reduced, and the service life of the blade body is prolonged.

The invention discloses a non-dismantling formwork, a production process thereof and a construction method of the non-dismantling formwork in a building wall, and relates to the technical field of wall buildings, and the non-dismantling formwork is mainly composed of a hydrophobic autoclaved aerated concrete plate, adhesive glue, a heat preservation core material and an anchoring part. After being subjected to composite processing in a factory, the formwork is transported to a construction site and is used as an outer formwork in the concrete pouring process. Due to the fact that the non-dismantling formwork and the cast-in-place concrete can be integrally formed, the process is simpler and more convenient compared with external thermal insulation of an outer wall. In addition, the non-dismantling formwork forms a cavity-free composite heat preservation structure, the product shows excellent fireproof, waterproof and anti-falling performance, due to the fact that a water repellent is used in the production process, the risk that the adhesive loses efficacy due to water seepage of the non-dismantling formwork is effectively avoided, the non-dismantling formwork has excellent hydrophobic performance, water erosion is effectively resisted, and the service life of the non-dismantling formwork is prolonged. The internal thermal insulation layer is protected from being damaged, and the problem of cracking or falling caused by environmental change is avoided.

The invention discloses a turbine blade water erosion defect monitoring and identification method, and relates to the technical field of turbine state monitoring and fault diagnosis. The method comprises a state sensing module, a feature processing module, an intelligent identification module and an early warning correction module. The state sensing module collects macroscopic feature data such as vibration signals and operation parameters; the feature processing module performs multi-dimensional extraction on the data and constructs a fusion feature vector; the intelligent identification module outputs a water erosion defect level through a dual-mode autonomous learning model; and the early warning correction module executes graded early warning and performs closed-loop correction on the model based on an actual result. Early recognition of water erosion defects is achieved, new and old units are adapted, and monitoring reliability and economical efficiency are improved.

The invention discloses a side slope stabilizer and a preparation method thereof, and a side slope reinforcing method, the side slope stabilizer comprises the following raw materials by weight: 20%-30% of bentonite, 15%-25% of fly ash, 10%-20% of an active silica-alumina material, 5%-10% of a biological enzyme stabilizer, 20%-30% of cement, and the balance of water. The invention has the following beneficial effects: 1, the stability of the slope is enhanced: the bentonite and the active silicon-aluminum material have a synergistic effect, so that the cohesive force and the shear strength among soil particles are improved, and landslide and collapse are prevented; 2, excellent weather resistance: the material has water erosion resistance, weather resistance and freeze-thaw resistance, and can protect the slope stability under extreme weather conditions; construction is convenient and efficient, materials are sprayed through a wet method, coverage is wide, the construction period is short, and the method is suitable for large-area slope reinforcement. And 4, environmental protection and economy: by utilizing industrial byproducts such as fly ash, the cost is reduced, industrial waste discharge is reduced, and green construction is realized.

The invention relates to the technical field of roadway support, and discloses a roadway roof partition support method in a water erosion environment, which comprises the following steps: determining the geological condition of a roadway roof in a geophysical prospecting mode, and carrying out detection analysis to obtain a detection analysis result; dividing the roadway roof into a strong water erosion area, a weak water erosion area and a non-water erosion area according to the detection analysis result; according to the detection analysis result, physical parameters of roadway roofs in the strong water erosion area, the weak water erosion area and the non-water erosion area are simulated and analyzed through a mathematical model, so that a supporting strategy is determined; selecting a supporting tool according to the supporting strategy; a supporting strategy of a weak water erosion area or a non-water erosion area adjacent to the strong water erosion area is firstly completed, and then a supporting strategy of the strong water erosion area is completed, so that supporting is completed; and arranging a real-time monitoring assembly to obtain a monitoring result in real time. Safety in the roadway roof supporting process is improved, damage of water erosion to the roadway roof is reduced, and the service life of a roadway is prolonged.

The invention discloses a steam turbine blade water erosion damage prediction method, system and device, and relates to the technical field of water erosion damage prediction.The method comprises the steps that a three-dimensional blade and outer watershed geometric model is established, grid division is conducted on the geometric model, and a graph structure capable of expressing grid units is obtained; performing numerical simulation by adopting a graph structure to obtain a water erosion data training set; constructing a water erosion damage evaluation model of the blade, wherein the water erosion damage evaluation model comprises a flow field prediction network and a movable blade erosion rate prediction network; inputting a water erosion data training set into a water erosion damage evaluation model for training, and predicting a moving blade erosion rate caused by secondary water drop impact at different radial heights; according to the method, sufficient blade water erosion analysis results serve as sample data, the flow field liquid phase parameter distribution-based prediction network and the moving blade erosion rate prediction network are trained, rapid prediction from design parameters to the last-stage moving blade erosion rate is achieved, and meanwhile, the accuracy of moving blade erosion rate prediction is improved.

The invention provides a method for preventing and controlling nitrogen and phosphorus loss of sandy and dry cultivated land based on EICP root reinforcement and relates to the field of soil ecological protection and agricultural pollution prevention and control. According to the method, a three-dimensional prevention and control system is formed from the two dimensions of surface layer film covering protection and deep root system soil fixation through the synergistic effect of EICP film covering and local plant root system three-dimensional reinforcement, wind erosion and water erosion are effectively resisted, the soil nitrogen and phosphorus loss rate of the large-gradient sandy and dry cultivated land is remarkably reduced, and meanwhile the soil desertification process is slowed down; the EICP film covering layer has good water permeability and moisture retention, nitrogen and phosphorus loss can be prevented, rainfall infiltration and soil moisture conservation can be guaranteed, and the germination rate and the growth speed of crops are increased; according to the method, local crop root system reinforcement is selected, the original planting structure is not disturbed, the economic benefit of cultivated land yield per mu is guaranteed, a harmless means of combining microorganisms, geotechnical engineering and agricultural planting is adopted, external pollution sources are not introduced, original basic characteristics of soil are not damaged, and the requirement for ecological protection of the Yellow River basin is met.

The application discloses an experimental device and method for water erosion of multi-flow-channel blades of last two stages of a steam turbine under different loads, and the experimental device comprises a steam generator, a ball valve a, a pressure reducing valve, a vortex flowmeter, a nozzle, a penultimate stage static blade, a penultimate stage dynamic blade, a last stage static blade, a last stage dynamic blade, a cylinder, a fixed shaft, an exhaust port, a vacuum valve, a gas suction pump, a high-speed camera, a computer, an air compressor, a particle generator and a ball valve b. The method can be used for exploring water erosion damage of last two stages of blades of a thermal power steam turbine under different working conditions, different pressures in the cylinder are changed through the gas suction pump and computer end control, pressure values in the last two stages under different working conditions are achieved, the nozzle is arranged along the height of the blade, the flow state of steam in the blade passage of the last two stages can be better simulated, the last two stages of blades are fixed on corresponding discs respectively, the mutual influence between the blades is considered, and the flow state of steam in the last two stages of the low-pressure cylinder of the steam turbine can be truly reflected.

The invention belongs to the technical field of water erosion comprehensive prevention and control, and particularly relates to a farmland water erosion comprehensive prevention and control device and method.The farmland water erosion comprehensive prevention and control device comprises a concrete slope body, a rotating blocking mechanism, an impact buffering mechanism, a synergistic mechanism and a plurality of pulling buffering mechanisms, and a concrete ditch is formed in one side of the concrete slope body; a rotary blocking mechanism is installed on the side, close to the concrete ditch, of the concrete slope body and used for blocking stones, the rotary blocking mechanism comprises a blocking frame, and a blocking impact net is fixedly installed in the blocking frame. According to the device and method for comprehensive prevention and treatment of farmland water erosion, through arrangement of corresponding mechanisms, slope protection can treat stones, the probability of ditch blockage can be reduced, the influence on the ditch drainage effect is reduced, damage to the ditch is reduced, the influence on the ditch drainage effect is reduced, cleaning is easier, and the device and method are suitable for popularization and application. And long-term use is facilitated.

The invention discloses an ecological restoration space division method, system and device and a medium, and relates to the field of ecological restoration, and the method comprises the steps: obtaining the land utilization condition of a wind-water composite erosion region; determining the ecological function importance of the wind-water composite erosion area based on the land utilization condition; determining the wind erosion and water erosion sensitivity of the wind-water composite erosion area based on the land utilization condition; determining a comprehensive evaluation result based on the ecological function importance and the wind erosion and water erosion sensitivity; and dividing the ecological restoration space of the wind-water composite erosion area based on the comprehensive evaluation result. The key ecological restoration space can be accurately recognized, and it is ensured that resources can be preferentially put into the area where restoration is most needed.

This invention discloses a laser thermal spraying gun, belonging to the field of laser additive manufacturing technology. It includes a connecting base, an air knife assembly, an inner nozzle, an outer nozzle, a cooling jacket cover, and a cooling jacket tube. The outer nozzle includes a powder feeding body and a Laval tube. The Laval tube has diffusion holes inside. The Laval nozzle accelerates the airflow through a tapered-expanding structure, forming a high-speed, high-temperature jet environment. This ensures the powder is fully preheated and uniformly dispersed before reaching the substrate. Combining the Laval tube with laser spraying combines the advantages of laser cladding and thermal spraying technologies. The accelerated effect of the Laval airflow, under high temperature and high pressure, allows the powder to fully contact the laser heat source over a sufficiently long flight distance through the Laval nozzle. This enables the powder to form a metallurgical bond with the substrate in a molten state, achieving a bonding strength 2-3 times that of traditional thermal spraying. This method is suitable for confined spaces used in the protection and repair of turbine blades from water erosion.

The combined screw structure with the waterproof structure comprises a screw body, an abutting plate is connected to the screw body in a sliding and sleeved mode, a waterproof sleeve is fixedly connected to the upper end of the abutting plate, the upper end of the waterproof sleeve is designed to be open, a fixing block is fixedly connected to the side wall of the waterproof sleeve, and the fixing block is fixedly connected to the side wall of the waterproof sleeve. And a groove is formed in the side wall of the fixing block, a rotating rod is jointly and rotationally connected between the inner walls of the two ends of the groove, the rotating rod is fixedly sleeved with a rotating plate, and the end of the rotating plate is fixedly connected with a waterproof cover plate matched with the opening. The waterproof screw is reasonable in structure, the waterproof sleeve and the waterproof cover plate are arranged, after the screw body is fastened, the waterproof cover plate is loosened, the waterproof cover plate rotates to the horizontal direction under the action of the torsion spring to cover the opening, the opening is closed, the nut is wrapped in the waterproof sleeve, and the situation that the nut is eroded by water, and consequently disassembly is difficult is avoided.

The invention provides a protective farming method suitable for black soil in a wind and water erosion staggered area and application of the protective farming method, and relates to the technical field of agricultural soil improvement. The method comprises the following steps that before crops are planted, black soil in the wind and water erosion interlaced area is subjected to deep scarification, the ground surface is completely covered with straw, and the use amount of the straw is 100% of the straw biomass of previous crops. Through optimal combination of an integrated cultivation mode and straw coverage, a soil physical structure, organic carbon components and microbial activity are comprehensively regulated and controlled, a soil quality evaluation system containing physical, chemical and microbial indexes is constructed, and synchronous improvement of black soil quality and corn yield in a wind and water erosion staggered region is realized; and a technical support is provided for protection and sustainable agriculture of black soil in the wind and water erosion interlaced area.

The present invention provides a channel slope protection and anti-scour construction process and structure, belonging to the field of water conservancy engineering technology. The channel slope protection and anti-scour construction process includes the following steps: First, a geotextile is laid on the slope surface. When the geobags are filled with soil, half a bag of soil is filled into the geobag and then tied. The geobags are then laid on the geotextile in rows along the cross-sectional direction of the diversion channel, with the bag opening facing upstream and the two corners of the bag bottom pressing against the two adjacent geobags in the next row, forming a fish-scale arrangement. Construction workers insert the two rods of a U-shaped clamp into the adjacent corners of the bottom of adjacent geobags, pass through the corners to press the geobag in the next row, and then through the geotextile and into the soil on the slope surface. When water flows through, the geobags in the front row provide protection for the geobags in the back row, and the U-shaped clamp can enhance the anchoring of the geobags, preventing them from being washed away by water, thereby improving their resistance to water erosion.

The invention provides hydrophobic leakproof spacer fluid for well cementation as well as a preparation method and application of the hydrophobic leakproof spacer fluid. The hydrophobic leakproof spacer fluid for well cementation comprises water, a weighting agent, walnut shells, fibers, a retarder, a hydrophobic macromonomer, a cross-linking agent and the like. A hydrophilic sulfonic acid group in the hydrophobic macromonomer has a complexing effect on calcium ions in mudstone, and an ester group as a hydrophobic group has a hydrophobic effect, so that a fixed arrangement that the hydrophilic sulfonic acid group faces the calcium ions and the hydrophobic group faces outwards is formed in a spacer fluid system. Wherein the hydrophobic groups are arranged to form a barrier layer for water, so that the invasion of water can be prevented, the effect of preventing water erosion is achieved, and the sedimentation of molecules such as a weighting agent can also be prevented. Tests show that the hydrophobic leakproof spacer fluid for well cementation has the pressure bearing capacity of 3.5-8 MPa when being tested by a hole type leakage stoppage instrument for seams of 1-3 mm, the pressure bearing capacity of a stratum is correspondingly improved by 3.5 MPa, and leakage in the well cementation process can be effectively avoided or reduced.

The utility model relates to the technical field of mobile phone camera modules, and discloses a waterproof mobile phone camera module, which comprises a fixed outer frame, a waterproof shell is fixedly connected in the fixed outer frame, a camera module is fixedly connected in the waterproof shell, a sealing assembly is arranged in the waterproof shell, and the camera module is fixedly connected in the waterproof shell. The sealing assembly comprises a rubber sealing ring, the rubber sealing ring is fixedly connected to the interior of the waterproof shell, a secondary sealing ring is fixedly connected to the interior of the waterproof shell, and an infrared optical filter is fixedly connected to the interior of the waterproof shell. According to the utility model, through the combined action of the rubber sealing ring and the secondary sealing ring in the waterproof housing, dual-sealing protection is formed, moisture and dust are prevented from permeating through gaps, and the polyurethane hydrophobic coating further enhances the waterproof performance and ensures that water drops roll on the surface and are not detained on the surface of the module, so that the service life of the module is prolonged. The camera module can work normally in a wet or severe environment, and faults caused by water erosion are avoided.

The application discloses a kind of slot wall collapse simulation device, including box, water inlet hole plate, water outlet hole plate, cover plate, air connection water inlet pipe, displacement sensor;Multiple pore water pressure sensors;Cover plate is installed above first area, and is used to close the top of first area;Air connection water inlet pipe is communicated with first area inside;Multiple pore water pressure sensors are placed in the inside of soil sample in second area;Displacement sensor is installed in simulation tank.The device can simulate the migration of water flow in soil sample under different groundwater depths by pressurization, and then cause the process of soil sample collapse;It can test the stability of soil layer conditions in construction area under the action of groundwater, quantitatively evaluate the porosity and water erosion resistance of soil sample;At the same time, it can also approximately infer the depth of possible hole wall collapse, for engineering construction reference, to judge whether soil sample reinforcement is needed and propose appropriate soil sample reinforcement method, reduce the impact of hole wall collapse on project progress.

The invention relates to a side slope alkali-reducing ecological substrate layer and a preparation method thereof. The substrate layer comprises planting soil, a hydraulic inorganic cementing agent, an alkali-reducing composition, a bionic feather structure formed by spraying and adhering carbon fibers and soybean protein fibers, and an additive; the bionic feather structure contains hydrophilic colloidal particles and a halophilic and alkaliphilic biological agent. A slowly-released acidic group is introduced into the alkali-reducing composition, so that alkalinity is continuously neutralized, and the problem that plants are difficult to grow due to the fact that the pH value of soil is maintained to be 11-14 is solved. Moreover, the bionic feather structures dispersed in the matrix form tiny pores, a large amount of air is stored in the tiny pores, a barrier for effectively preventing convection of cold and hot air is formed, and the temperature stability of the matrix layer is improved; the hydrophilic colloidal particles in the matrix can keep the fluffy and breathable properties of the matrix and avoid water loss and vegetation root system damage caused by dry cracks on the surface of a base layer, so that rooting and survival of plants can be restored, and wind erosion resistance and water erosion resistance are also facilitated.

The present invention discloses a method, a system and a device for predicting the water erosion damage of steam turbine blades, which relates to the technical field of water erosion damage prediction. The method includes establishing a three-dimensional blade and outer flow field geometric model, meshing the geometric model to obtain a graph structure capable of representing grid cells; performing numerical simulation using the graph structure to obtain a water erosion data training set; constructing a water erosion damage evaluation model for the blade, and the water erosion damage evaluation model includes a flow field prediction network and a moving blade erosion rate prediction network; using the water erosion data training set to input into the water erosion damage evaluation model for training to predict the moving blade erosion rate caused by the impact of secondary water droplets at different radial heights. The present invention uses a sufficient amount of blade water erosion analysis results as sample data to train the prediction network based on the distribution of liquid phase parameters in the flow field and the moving blade erosion rate prediction network, realizes the rapid prediction from design parameters to the moving blade erosion rate of the last stage, and improves the accuracy of the moving blade erosion rate prediction at the same time.

The utility model discloses a subway upper cover gap cover plate structure, and relates to the technical field of constructional engineering. The connecting structure comprises structural beam plates and deformation joints between the structural beam plates, the aluminum alloy plate is located at the upper end of the structural beam plate, the middle section of the aluminum alloy plate is in a V shape, the first cover plate and the second cover plate are connected to the outer side of the aluminum alloy plate in a sleeving mode, and the F-shaped waterproof geomembrane is clamped to the outer wall of the aluminum alloy plate. And; the positioning structure comprises guide rails fixedly arranged on the two sides of the lower end of the aluminum alloy plate and adjusting blocks located below the aluminum alloy plate and distributed at equal intervals. By arranging the waterproof structure, the problem that water flow cannot be prevented from eroding a building structural member through a deformation joint due to the fact that water erosion is difficult to effectively prevent by adopting a reversed beam floating plate structure is solved.

The invention relates to the technical field of grouting reinforcement materials, and discloses an anti-seepage grouting material and a preparation method thereof.The anti-seepage grouting material is prepared from, by mass, 860-900 parts of industrial waste residues, 80-120 parts of bentonite, 1-5 parts of a water reducing agent, 20-30 parts of water glass, 1-3 parts of a cross-linking agent, 1-3 parts of an accelerant and a proper amount of water; the preparation method of the anti-seepage grouting material comprises the following steps: S1, uniformly stirring industrial waste residues and water, adding a water reducing agent, and uniformly stirring to obtain slurry A; s2, uniformly mixing the slurry A with bentonite to obtain slurry B; s3, mixing the slurry B with water glass, a cross-linking agent and an accelerant to obtain the grouting material. According to the prepared anti-seepage grouting material, cement is replaced with industrial waste residues such as the fly ash, the mineral slag and the steel slag to serve as the grouting material, the good water corrosion resistance is achieved, it is effectively guaranteed that the grouting material obtained through mixing is better in durability, all components cooperate, and the anti-seepage and water plugging effects are obvious.

The utility model relates to the technical field of prevention frames, in particular to a water and soil loss prevention frame which comprises a first protection frame, a second protection frame arranged on the side face of the first protection frame, a fixing base fixedly connected to the side face of the first protection frame, a hinge plate fixedly connected to the side face of the second protection frame and hinged to the fixing base. A first partition plate is fixedly connected into the first protection frame, a second partition plate is fixedly connected into the second protection frame, a plurality of installation spaces are formed among the first partition plate, the first protection frame, the second partition plate and the second protection frame, and a first protection net and a second protection net are fixedly connected into the installation spaces respectively. Through cooperative use of the first protection frame, the first protection net and the second protection net, the prevention and treatment frame can be flexibly folded and unfolded according to different terrains and gradients, and the first protection frame and the second protection frame are allowed to rotate relatively within a certain range through cooperative connection of the hinge plate and the fixing base. Therefore, different gradients can be adapted.

A deodorization floor drain comprises a filtering section and a deodorization section, a water inlet is formed in the upper end of the filtering section, a water outlet is formed in the deodorization section, the deodorization section is connected to the lower end of the filtering section, the water inlet and the water outlet are communicated through the deodorization section, and the deodorization section is provided with a deodorization structure. The filter section and the deodorization section which are integrally formed have no connecting gap, compared with a traditional floor drain component connected in a splicing mode, the problem of water leakage caused by untight connection does not exist, and due to the fact that the floor drain component is of an integral structure, the floor drain component is more convenient to install, and the floor drain component is more attractive in appearance. The polymer material is integrally formed, so that the floor drain has better mechanical performance and can bear certain pressure and impact force, the integrally formed floor drain cannot cause dislocation among parts due to thermal expansion and cold contraction of the material or long-term water flow scouring, and the service life of the floor drain is greatly prolonged.