452results about How to "Reduce erosion" patented technology

The invention discloses a guidance planning method for ecological restoration of a side slope, and relates to the technical field of ecological restoration, and the main scheme is as follows: collecting multiple data of the side slope; calculating a slope stability index, and presetting a threshold value to judge whether the slope area is in a risk state; calculating a vegetation coverage area, and further calculating a plant suitability index; calculating a plant variety selection index, and further calculating a planting quantity; calculating the water and soil loss rate after restoration; calculating a plant adaptation comprehensive index; calculating an ecological restoration effect index and a vegetation density, and further obtaining a planting layout rationality index; calculating a soil stability index, further calculating a water and soil loss control index, and judging whether the soil loss control state is abnormal or not according to a preset threshold value; calculating a water and soil conservation effect index, further obtaining a vegetation growth comprehensive index, presetting a threshold value to judge the vegetation growth condition, and taking corresponding remediation measures; the method can effectively guarantee scientificity and effectiveness of ecological restoration of the side slope.

The invention, which relates to the technical field of offshore wave simulation, discloses a wave hydrodynamic numerical simulation method for a sea area with a breakwater, comprising the following steps: S1, determining a target sea area, and collecting sea chart data and water depth topographic data of the target sea area; s2, determining a shoreline position of the target sea area, and establishing a water depth terrain database of the target sea area; s3, setting grid precision, and constructing a wave hydrodynamic two-dimensional model of the target sea area; s4, setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; and S5, based on the wave hydrodynamic two-dimensional model constructed in the S3, performing numerical simulation on the target sea area by using a sub-grid method to obtain the characteristic wave height and periodic data of the target sea area. According to the method provided by the invention, the calculation efficiency can be ensured, the wave transmission characteristics of the open type oyster reef are considered, and the influence of open type oyster reef construction on the wave hydrodynamic environment field can be accurately simulated.

The utility model discloses a combined dewatering and drainage system suitable for treating stagnant water on the upper layer of a strip mine side slope. An inclined drainage hole (1), a vertical drainage hole (2) and a drainage ditch (3) are combined to form the combined dewatering and drainage system. Sleeves are arranged in the inclined drainage hole (1) and the vertical drainage hole (2) within the depth of a fissure zone, a hard permeable pipe penetrates through the sleeves and extends into the inclined drainage hole (1) and the vertical drainage hole (2), and a water stop plug is arranged in an annular gap between the hard permeable pipe and the wall of the inclined drainage hole (1) and the wall of the vertical drainage hole (2). And a plurality of water permeable holes are formed in the hard water permeable pipe below the water stop plug in the vertical drainage hole (2) and the hard water permeable pipe within the water stop plug in the inclined drainage hole (1). The water pressure near the water-resisting layer is reduced through the continuous gravity drainage effect, the rainfall cost is reduced, the erosion influence of water flow on slope cracks is avoided, and the overall stability of the strip mine slope is improved.

The invention discloses an ablation-resistant long-fiber reinforced nylon material for a battery pack, and relates to the technical field of nylon materials, the ablation-resistant long-fiber reinforced nylon material comprises the following raw material components by weight: 60-80 parts of nylon resin powder, 30-50 parts of a long-fiber reinforced material, 10-18 parts of aluminum diethylhypophosphite master batch, 8-15 parts of bromine-antimony composite master batch, 3-7 parts of montmorillonite, 12-20 parts of aluminum hydroxide, and 2-6 parts of nano-silica. The composite material is prepared from the following components in parts by weight: 1-4 parts of carbon nanotubes, 0.5-1.2 parts of an antioxidant I, 0.3-0.8 part of a lubricant I, 2-5 parts of a compatilizer, 0.1-0.4 part of a nucleating agent and 0.2-0.6 part of an anti-ultraviolet agent. By adding the diethyl aluminum hypophosphite master batch, the flame retardant property of the nylon material is improved, the processability of the nylon material is improved, the ablation resistance of the nylon material is improved, and the problems of insufficient flame retardant property, poor processability and poor ablation resistance of the nylon material can be solved.

The invention discloses an arylamine compound, a composition containing the arylamine compound and an organic light-emitting device. The structure of the arylamine compound is as shown in the following formula (1): # imgabs0 # formula (1). Wherein ring A is selected from substituted or unsubstituted phenanthrene ring; b is selected from structural substituents as shown in the following formula (2); # imgabs 1 # formula (2). And ring C is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring and a substituted or unsubstituted phenanthrene ring. The arylamine compound provided by the invention has a series of excellent physical and chemical characteristics, and has a good application prospect in the photoelectric field. Specifically, the arylamine compound has excellent photoelectric stability, can effectively resist performance degradation caused by illumination and current change, and ensures stable output of the device in long-time operation. The light-emitting diode has the advantages of low sublimation temperature, low driving voltage, high light-emitting efficiency and long device service life.

The invention relates to the technical field of cutting equipment, in particular to large-size diaphragm high-precision cutting equipment which comprises cutting equipment for diaphragms, the cutting equipment is composed of a storage cover, a support, a mounting frame, a hydraulic telescopic rod and a cutting knife, and a cleaning structure for cleaning the cutting knife is arranged in the storage cover; the cleaning structure comprises a mounting plate, a scraping plate, a first guide rod and a first spring; a linkage structure is arranged in the storage cover and comprises a rack, a gear, a two-way lead screw and a sliding seat, and the upper end and the lower end of the rack are fixedly connected with the hydraulic telescopic rod and the cutting knife correspondingly; a liquid conveying mechanism connected with the scraping plate is installed on the upper surface of the storage cover and comprises a pump shell, a piston, an ejector rod, a check valve, a valve plate and a communicating structure. Lifting adjustment, cleaning and cooling lubrication of the cutting knife are integrated, the automatic and intelligent cutting process is achieved, all the components are tightly matched, the structure is compact, and the production efficiency is improved.

The invention provides a refining method for increasing nitrogen in the vacuum process of a VD vacuum furnace, and relates to the technical field of ferrous metallurgy, the refining method comprises the following steps: S1, refining molten steel in an LF steel ladle by adopting nitrogen as bottom blowing gas; and S2, the molten steel obtained after LF ladle refining is placed in a VD vacuum furnace, nitrogen serves as bottom blowing gas, the nitrogen flow and the vacuum degree are adjusted in a multi-stage mode, and the nitrogen increasing operation is completed. A multi-stage adjustment mode is adopted, and the nitrogen content in the molten steel is controlled by controlling the nitrogen flow, the vacuum degree and the retention time.

According to the method, bacillus licheniformis bacterial liquid and calcium ion liquid are sequentially, slowly and evenly sprayed on the surface of a soil body, soil particles on the surface of a slope are cemented, a layer of calcium carbonate protection film is formed on the surface of the soil body, the anti-scouring capacity of the soil body can be effectively improved, flowing of the soil particles is reduced, and plant growth is protected; the adopted bacillus licheniformis can also increase the number of effective microbial communities in soil, improve the root system environment, promote plant growth, inhibit reproduction of harmful microorganisms, improve the granular structure of the soil, improve the soil, regulate the pH value of the soil, improve the water storage, energy storage and heat preservation of the soil, improve the disease resistance of crops and promote the maturity of plants; after vegetation grows, the effect of water and soil conservation can be improved, generated calcium carbonate can also bond soil particles, water and soil loss is reduced, bacillus licheniformis plays a dual role, multiple utilization of resources is achieved, and wide application prospects are achieved.

The invention discloses a ternary sand-fixing water-retaining seepage-proofing fertility-increasing vegetation restoration and reconstruction method, and relates to the technical field of operation methods of sand ecological restoration, and the method comprises the following steps: S1, laying a layer of seepage-proofing material on the surface layer of a target planting area to reduce water seepage and enhance soil water-retaining capacity; s2, mixing a water-retaining agent with local sandy soil to form a water storage layer, and paving the water storage layer on the surface of the impermeable material to ensure that the plant root system can obtain water for a long time; s3, applying an organic fertility intensifier to the water storage layer to improve the organic matter content and nutrient supply capacity of the soil; s4, appropriate plants are selected for planting, after planting, the vegetation growth condition and the soil humidity are checked regularly, a water-retaining agent and an organic fertility increasing agent are supplemented in time according to needs, and it is ensured that the vegetation can grow healthily. The planting method provided by the invention has a remarkable yield increasing effect, the survival rate of plants can be effectively improved, and the effect of fixing sand for a long time is achieved.

The invention provides a preparation method and application of modified'sea urchin type 'manganous-manganic oxide, ammonia water is used as a main precipitator, manganese sulfate, the precipitator and a complexing agent are added into an alkaline base solution, filtering, washing and drying are performed after reaction to obtain'sea urchin type' manganous-manganic oxide, and the modified'sea urchin type 'manganous-manganic oxide is obtained by modifying the surfaces of particles on the basis. Al, Mg, Ti, Zn and other elements are introduced through liquid phase doping, a wrapping layer is formed on the surface of the sea urchin type manganous-manganic oxide, and the electrochemical performance and stability of the lithium manganate material can be further improved. The invention provides modified sea urchin-type manganous-manganic oxide with primary crystal grains larger than 300 nm, and the manganous-manganic oxide can effectively reduce the erosion effect of electrolyte by means of high-crystallinity and large-size conical crystal grains.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The present invention relates to a weather-resistant and anti-aging polyethylene pipeline and a preparation method thereof, and belongs to the technical field of polymer materials. The pipeline adopts high-density polyethylene resin, linear low-density polyethylene resin, polyimide resin powder, nano silicon dioxide, nano hexagonal boron nitride, polybenzimidazole fiber, carnosic acid, zinc glycyrrhetinate, antioxidant 1010, hindered amine light stabilizer, polydimethylsiloxane titanate cross-linked polymer, 3-methacryloxypropyl triethoxysilane as raw materials; wherein, polyimide resin powder, carnosic acid and zinc glycyrrhetinate are uniformly mixed, and then modified at 300°C to 350°C for 30min to 60min to obtain a modified product, which can better improve the weather resistance and aging resistance of the pipeline. Each component is compatible with each other, and a special modified preparation method is adopted to better play the synergistic effect of the components, and greatly improve the weather resistance and aging resistance of the polyethylene pipeline.

The invention belongs to the technical field of chemical pumps and discloses a high-temperature-resistant, wear-resistant and anti-corrosion chemical pump which comprises a fixed base, a motor is fixedly connected to one side of the upper surface of the fixed base, a pump body is fixedly connected to the side, close to the motor, of the upper surface of the fixed base, and the output end of the motor penetrates into the pump body. A liquid inlet pipe is fixedly connected to the side, away from the motor, of the outer surface of the pump body. By arranging the blocking assembly, when the chemical pump stops, liquid can flow back, a connecting ring is pushed to move in the direction away from a liquid inlet pipe through backflow of the liquid, then a baffle ring is driven by an arc-shaped sliding block to synchronously move, the baffle ring seals a through groove, and therefore communication between a second straight pipe and a first straight pipe is disconnected, and then the liquid is prevented from continuing to flow back; the impeller in the pump body is impacted, so that the erosion of liquid to the impeller is reduced, the impeller can be normally used for a long time, and the service life of the impeller in the chemical pump is greatly shortened.

The utility model relates to the technical field of water conservancy protection slope upstream faces, in particular to a water conservancy project protection slope design model which comprises a slope body, one side of the slope body is fixedly connected with a slope toe, the top of the slope toe is provided with an anti-scour assembly, the anti-scour assembly comprises a protection slope main body, the protection slope main body is fixedly connected to the top of the slope toe, and the slope toe is fixedly connected with the slope toe. A drainage groove is formed in one side of the top of the slope protection body, a water receiving groove is formed in the side, away from the drainage groove, of the top of the slope toe, and a green plant planting block is fixedly connected to an inner cavity of the water receiving groove. According to the slope protection design model for the water conservancy project, by installing the anti-scouring assembly, in the process of using the model, through cooperation of green plant planting blocks, metal grids and other components and special structural design, impact of water flow can be resisted, erosion of the water flow to a slope surface is reduced, the service life of a protection slope is prolonged, and safe operation of water conservancy facilities is guaranteed; green plants are planted on the surface, rainwater can be effectively absorbed, water and soil loss is reduced, and soil stability is improved.

The invention discloses a wave hydrodynamic numerical simulation method for a sea area provided with a hedge shrub dam, and relates to the technical field of offshore wave simulation, and the method comprises the following steps: S1, determining a target sea area, and collecting actually measured water depth topographic data and chart water depth data of the target sea area, the target sea area being a salt marsh beach sea area where the hedge shrub dam is planned to be arranged; s2, setting grid precision, and constructing a wave hydrodynamic two-dimensional model of the target sea area by using a structured grid; s3, setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; and S4, based on the wave hydrodynamic two-dimensional model constructed in the S2, performing numerical simulation on the target sea area by using a sub-grid method to obtain the characteristic wave height and periodic space-time distribution of the target sea area. According to the method, the calculation efficiency can be guaranteed, the wave transmission characteristics of the hedge shrub dam are considered, and the influence of construction of the hedge shrub dam on the wave hydrodynamic environment field can be accurately simulated.

The invention relates to a whole intestine flora transplantation strategy and a nanometer packaging method and application thereof. According to the method disclosed by the invention, the transplantation of the whole intestinal flora is realized by mainly utilizing the combined transplantation of the intestinal fluid flora and the fecal flora, so that the micro-ecology of the whole intestinal tract is more comprehensively, accurately and efficiently regulated and controlled, and a better flora transplantation treatment effect is achieved. The microflora (microcapsules) is encapsulated by a safe biological material, the encapsulating process is simple in process and short in time consumption, intestinal bacteria in different shapes can be simultaneously encapsulated, and the method is not only suitable for encapsulating oxygen-resistant bacteria and facultative anaerobic bacteria, but also suitable for encapsulating intestinal flora including strict anaerobic bacteria, and has the advantages of being simple in process and low in cost. According to the preparation method, death of intestinal bacteria in the preparation process can be reduced, erosion of gastric acid and the like to the intestinal bacteria can be resisted, the survival rate of the bacteria and the colonization efficiency of the bacteria in host intestinal tracts can be remarkably improved, and the microbial transplantation treatment effect is further enhanced.

The invention discloses an anti-rut enhanced epoxy asphalt mixture and a preparation method thereof, belongs to the technical field of asphalt mixture processing, and is used for solving the technical problem that the anti-rut performance, the water stability and the low temperature resistance of an asphalt mixture in the prior art need to be further improved. The modified asphalt is prepared from the following components in parts by weight: 16 to 20 parts of matrix asphalt, 0.8 to 1 part of additive, 4 to 6 parts of reinforced elastomer, 3 to 5 parts of epoxy modified polysiloxane, 4 to 5 parts of modified reinforced fiber and 65 to 75 parts of aggregate, according to the invention, the asphalt mixture composed of the matrix asphalt and the aggregate is reinforced by the reinforced elastomer, the epoxy modified polysiloxane and the modified reinforced fibers, so that the rutting resistance of the epoxy asphalt mixture is effectively improved, and the water stability and low temperature resistance of the epoxy asphalt mixture are also improved.

The invention discloses a process for repairing damaged soil ecology by lincomycin waste liquid fertilizer, and relates to the technical field of soil remediation, which comprises the following specific steps: step 1, screening and culturing microbial decomposition flora, the invention has the following advantages: through the chelation of the polyaspartic acid derivative on metal ions and the promotion effect on nutrient absorption, the release and transmission of nutrients are precisely regulated and controlled, so that crops can absorb and utilize the nutrients more efficiently; the nano composite material and the specific biological stimulant containing various beneficial microbial strains and natural plant extracts are jointly fused into the liquid fertilizer, the microbial strains in the specific biological stimulant activate the soil biological environment, the natural plant extracts assist plant growth to resist diseases, and the nano composite material and the natural plant extracts have a synergistic effect, so that the liquid fertilizer has a good application prospect. Physicochemical properties and biological activity of soil are optimized, excellent soil micro-ecology is created for plant growth, healthy and strong growth of plants is promoted, and restoration of damaged soil is enhanced.

The invention discloses a plastic particle screening machine, and relates to the technical field of screening machines, the plastic particle screening machine comprises a working frame, the bottom end of the working frame is fixedly connected with a supporting seat, and a screening cylinder is driven to rotate through a servo motor and a worm and gear, so that the screening cylinder throws plastic particles located in a filter sieve to the inner wall of the screening cylinder; the plastic particles with the sizes smaller than those of the holes in the plastic particles enter the next-stage filter sieve, so that the plastic particles can be sieved step by step, the problem that part of the plastic particles with the sizes smaller than those of the plastic particles with the sizes larger than those of the plastic particles without being sieved is solved, the sieving precision can be effectively improved, and the sieving efficiency is improved. The screening machine is simple in structure and large in screening area, the screening efficiency can be effectively improved, meanwhile, the screening stage number can be automatically adjusted by rotating the filtering baffle, the grading screening precision can be adjusted according to the screening requirement, various screening requirements can be met, and the applicability of the screening machine can be effectively improved.

The invention discloses a sodium ion battery positive electrode material with high cycle performance and a preparation method of the sodium ion battery positive electrode material. According to the sodium ion battery positive electrode material, magnesium, titanium, nickel and aluminum are doped in a layered transition metal oxide matrix, so that the electrochemical performance of the material can be optimized; wherein the doping of magnesium and titanium improves the structural stability and thermal stability of the material, the introduction of nickel enhances the conductivity, the doping of aluminum reduces the volume change of the material, and the rate capability and cycling stability of the material are effectively improved; meanwhile, corrosion and side reaction of electrolyte are further reduced through surface coating of the conductive polymer, the service life of the battery is remarkably prolonged, the cycle performance of the battery is remarkably improved, and particularly, a good capacity retention rate can be kept under the high-rate charge-discharge condition.

The invention discloses a preparation method of an electric furnace lining gunning material and a gunning device thereof, and the preparation method comprises the following steps: 1, uniformly mixing fly ash and titanium-containing powder, and heating to a first temperature to obtain an initial material; 2, the initial material is subjected to heat preservation at the first temperature for 1.5-2.5 h and then naturally cooled to the room temperature, and a first material is obtained; and step 3, crushing the first material and preparing the first material into slurry to form the gunning material. According to the preparation method of the electric furnace lining gunning material and the gunning device of the electric furnace lining gunning material, the fly ash and the titanium-containing powder react at a high temperature to obtain TiC, magnesium aluminate spinel and perovskite, the three high-melting-point solid-phase substances have the characteristics of high corrosion resistance, high viscosity and the like at the same time, the three high-melting-point solid-phase substances are gunned to the damaged part of the furnace lining, and the damage to the damaged part of the furnace lining is avoided. The direct contact between the slag and the furnace lining can be effectively prevented, and the further melting loss and scouring consumption speed of the slag to the furnace lining is reduced, so that the service life of the furnace lining is prolonged.

The invention discloses a polycrystalline composite tantalum carbide coating and a preparation method thereof, comprising the following steps: preparing a porous carbide coating on a clean substrate; cleaning and drying the porous carbide coating, mixing an inorganic tantalum salt, an alkane and hydrogen in a molar ratio of 2-5:2-5:1-2 in an inert atmosphere with argon as a carrier gas, and performing CVI deposition, wherein the pressure of the mixed gas is 5-100 mbar, the deposition temperature is 1000-1800°C, and the deposition time is 10-20 h to obtain the polycrystalline composite tantalum carbide coating.

The slope slide-resistant pile comprises a slope protection assembly, the slope protection assembly is composed of anchor rods, a slope body, reinforcing ribs, a reinforcing mesh, a transverse #-shaped frame and a vertical #-shaped frame, and the anchor rods are symmetrically and fixedly connected to the slope body; according to the slope protection device, a good stabilizing effect is provided for a slope body through the slope protection assembly, the structure is simple, and the construction efficiency is improved; the drainage assembly is prepared in advance, the installation groove is dug, rapid installation and use can be achieved, a good drainage function is provided, auxiliary drainage can be conducted through a redundant channel after the filter screen is blocked, and the use stability of the equipment is improved; by adding the accelerator into the concrete and curing for a specified long time, the concrete setting can be obviously accelerated, the early strength can be improved, the normal increase of the strength can be ensured to a certain extent, the shrinkage cracking can be reduced and prevented, and meanwhile, the stability of the slope surface is further improved by a method and a spraying process of spraying the concrete twice, so that the slope surface quality is improved. And slope landslide is effectively avoided.

The invention discloses a power transmission and transformation project address-line parallel optimization method and system. The method comprises the following steps: constructing a power transmission and transformation project ecological influence comprehensive evaluation index system; establishing a research area data space, and obtaining an ecological sensitive area grade map corresponding to each index; determining the weight of each index in the index system by using an analytic hierarchy process, and performing weighted stacking on the ecological sensitive area grade maps of the indexes to obtain an ecological sensitivity comprehensive evaluation map; performing grid surface conversion operation on the ecological sensitivity comprehensive evaluation graph to obtain an ecological fragile area digital boundary, superposing fault grid data, a constructed power transmission and transformation project and a to-be-planned power transmission and transformation project graph layer, and performing power transmission and transformation project site selection based on finally generated visual surface data; and in combination with site selection information, a path with the minimum ecological influence is directly generated, and a power transmission and transformation project line selection strategy is obtained. The method is beneficial to systematically evaluating the possible environmental influence of the power transmission and transformation project, so as to ensure the optimal implementation of the project in the environment.

The invention discloses a high-temperature oxidation resistant coating as well as a use method and application thereof. The solute of the coating comprises 33%-40% of Al2O3, 42%-49% of SiO2, 8%-14% of Fe3O4, 3%-8% of SiC and 5%-7% of (Y2O3 + ZrO2), the proportion of Y2O3 in the (Y2O3 + ZrO2) is 5%-9%, and a solvent is distilled water. When the coating and the using method are applied to homogenization pretreatment of the nickel-based superalloy, the homogenization treatment time of the superalloy in a heat treatment furnace can be effectively prolonged, erosion and oxidation of high-temperature furnace gas to the surface of a steel ingot are avoided, subcutaneous oxidation cracks and element depletion are reduced, and the quality of the steel ingot is improved. And the method has positive influence on the surface grinding efficiency of the homogenized steel ingot, tool loss and other procedures.

The invention discloses a riverway revetment barrier with a monitoring function and a using method thereof.The riverway revetment barrier comprises a revetment body, a vertical rod is arranged over the revetment body, the bottom end of the vertical rod and the upper portion of the revetment body are connected and installed through a detachable base, and side inserting rods are installed on the two sides of the middle of the vertical rod; a top seat is fixedly arranged at the top of the vertical rod, back plates are arranged on the two sides of the rear portion and the middle of the revetment body correspondingly, mounting seats are arranged between the front sides of the back plates and the back of the revetment body, ground nails are mounted at the four corners of the bottom face of the revetment body correspondingly, and a groove is formed in the revetment body. And a built-in seat is mounted in a groove of the revetment body. According to the riverway revetment barrier with the monitoring function, through the water level measurer installed at the front end of the revetment body, the riverway water level change can be monitored in real time, flood and other natural disasters can be warned in time, and the flood control and disaster reduction efficiency and accuracy are improved.

The invention relates to the technical field of marine shutters, and discloses a marine noise reduction shutter which comprises a window frame, a plurality of inner blades are distributed in the window frame at equal intervals, the two sides of each inner blade are rotationally connected with the inner side wall of the window frame through connecting shafts, and first cavities are formed in the bottom ends of the interiors of the inner blades; and each cavity I is filled with a sound absorption plate. Through mutual cooperation of the opening and closing mechanism and the gas flowing assembly, in the opening and closing process of the shutter, the gas content in the miniature air cylinder is synchronously controlled, when the shutter is closed, the bottom ends of the outer blades shield a closed gap between the upper inner blade and the lower inner blade, outer layer sealing of the inner blades is achieved, and the service life of the shutter is prolonged. And meanwhile, when the louver is in a closed state, the sealing gasket can be automatically protected so as to reduce sea wind erosion on the sealing gasket, and meanwhile, by means of dislocation between the through holes and the connecting holes, protection on the acoustic board is synchronously achieved.

The invention relates to the technical field of greening protection devices, and particularly discloses a railway civil engineering greening protection device which comprises a side slope rock body, a water storage ditch arranged at the slope top of the side slope rock body, a retaining wall and a drainage ditch, and the retaining wall and the drainage ditch are arranged at the slope toe of the side slope rock body. Grid beams and drainage facilities are arranged on the slope surface of the slope rock mass, green plants are planted in the grid beams, the drainage facilities comprise drainage ditches and drainage tank assemblies, the drainage ditches are arranged along the slope surface of the slope rock mass, and the tail ends of the drainage ditches can guide water to drainage ditches. The drainage groove assembly is arranged on the grid beam and can guide water in the grid beam to the drainage ditch, the lower portion of the water storage ditch is communicated with a plurality of drip irrigation pipelines, the drip irrigation pipelines are buried in the slope rock mass and located below the green plants, and a plurality of drip irrigation holes are formed in the lower portions of the drip irrigation pipelines. According to the method, slope stability is protected, vegetation growth is promoted, and harmony and unification of ecological restoration along the railway, environmental beautification and slope protection are achieved.

The invention belongs to the technical field of ecological restoration and environmental protection, and provides a plant system-based three-dimensional desertification control method, which comprises the following steps of S1, collecting geographical, climate, soil and vegetation data of a desertification area, and evaluating and analyzing the desertification area by using a remote sensing technology; s2, establishing a three-dimensional planting mode of combining arbor, shrub and grass, and forming a multi-layer vegetation structure; s3, soil improvement is performed on the desertification area, and an ecological monitoring system is constructed; s4, constructing a reservoir and a water cellar facility, and performing water resource management; s5, performing forbidding protection on the desertification area; s6, dynamically monitoring the desertification area, and evaluating the desertification control effect according to the monitoring result; the overall survival rate of vegetation is increased through a vegetation three-dimensional planting mode, the ecological diversity is increased, the stability and resistance of an ecological system are improved, and effective prevention and treatment of desertification and comprehensive recovery of the ecological system are achieved.

The invention discloses a video monitoring security device, and particularly relates to the technical field of monitoring, the video monitoring security device comprises a camera, the upper end of the camera is fixedly connected with a protective cover, two sides of the protective cover are fixedly connected with anti-collision devices, the lower end of the protective cover is fixedly connected with a cleaning device, and the upper end of the protective cover is fixedly connected with a connecting device. According to the video monitoring security and protection device, the durability of the video monitoring security and protection device in a severe environment can be remarkably improved, functions of the device can be kept complete when the device is impacted by external force, the service life of the device is prolonged, a lens can be cleaned regularly, and the video monitoring security and protection device is convenient to use. And the automatic cleaning part can ensure that the lens is always in an optimal working state in various environments, so that the definition and the stability of an image are improved, the installation process is simpler, more convenient and faster, the installation time and the labor cost are reduced, and the overall installation efficiency is improved.