230 results about "Aeolian sand" patented technology

The invention provides aeolian sand mortar internally doped with aluminate coupling agent modified fly ash and a preparation method of the aeolian sand mortar. The aeolian sand mortar comprises the following raw materials by mass: 10-40g of modified fly ash; 60 to 90 g of cement; 300 to 350 g of aeolian sand; 45 to 55g of water; wherein the modified fly ash is prepared through wet modification of an aluminate coupling agent, and the preparation method of the modified fly ash comprises the following steps: mixing the aluminate coupling agent and absolute ethyl alcohol according to a mass ratio of 1: (3-5), heating, and stirring for the first time until a transparent solvent is formed; and adding the transparent solvent and fly ash into water together, stirring for the second time to form slurry, and drying to obtain the super-hydrophobic modified fly ash. Through innovative selection of internal doping materials and optimization of a preparation process, the mortar has excellent, lasting and stable hydrophobic performance, the anti-permeability, compressive strength, bonding strength and other performance of the mortar are remarkably improved, and the strict requirements of modern constructional engineering for high performance and long service life of the mortar are met.

The invention relates to the field of wind and sand prevention and control, in particular to a desert photovoltaic large base peripheral prevention and control system and method. The prevention and control system comprises a main air guide direction prevention and control system and a secondary air guide direction prevention and control system; the main wind direction prevention and control system is sequentially provided with three high vertical sand blocking fences, a lateral anti-lateral quicksand fence, a first sand stabilization grid area with a grid structure, two first plant sand blocking forest belts, a first plant sand stabilization area and a windproof sand blocking dust suppression fence in the direction from the upwind direction to the photovoltaic base. And the secondary wind guide direction prevention and control system comprises a second sand stabilization grid area, a second plant sand blocking forest belt and a second plant sand stabilization area. The sand prevention system can effectively solve the problems that an existing sand prevention technology is low in efficiency, unsustainable and the like, erosion and damage of sand grains to photovoltaic panels and infrastructures are reduced, the power generation efficiency is improved, the maintenance cost is reduced, long-term stable and efficient operation of a desert photovoltaic large base is guaranteed, and powerful support is provided for energy development and ecological protection balance in the desert area.

The invention relates to the technical field of semi-arid mining area land reclamation and ecological restoration, and discloses a semi-arid mining area reclamation double-surface-soil key layer and a refined construction method thereof.The semi-arid mining area reclamation double-surface-soil key layer comprises a wind-erosion-resistant key layer and a water and fertilizer maintaining key layer which are arranged from top to bottom; the anti-wind-erosion key layer comprises a coarse particle windproof layer and a fine particle cementing layer which are arranged from top to bottom; the water and fertilizer maintenance key layer is prepared from the following raw materials: fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator, an organic water-retaining agent and a biological enhancement matrix material; the raw materials of the coarse particle windproof layer comprise gravel and coarse sand; the raw materials of the fine particle cementation layer comprise fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator and an organic water retention capacity cementing agent. The reclamation double-surface soil key layer for the semi-arid mining area can effectively resist natural erosion, improve the soil structure, improve the water and fertilizer retention capability and promote the recovery of local host plants.

The invention relates to the technical field of saline-alkali land treatment and ecological engineering, in particular to a wind-sand-resistant self-adaptive saline-alkali land concealed pipe drainage system which comprises a water collecting pipe, a plurality of water seepage pipes and a photovoltaic power supply assembly. The drainage monitoring system and the sensing units are in signal connection with each other, the sensing units are arranged in the water collecting pipe and the water seepage pipe, and the photovoltaic power supply assembly is electrically connected with the sensing units; the photovoltaic power supply assembly is provided with a power monitoring module and a cleaning assembly. The drainage monitoring system comprises a data acquisition module, a salt migration analysis module and a control execution module. Energy supply is guaranteed through the wind-sand-resistant design and the self-cleaning function of the photovoltaic power supply assembly, parameters such as water flow and salt concentration are monitored in real time in combination with the sensing unit, the drainage strategy is dynamically regulated and controlled through the drainage monitoring system, and efficient discharge of saline-alkali soil salt and stable operation in the wind-sand environment are achieved.

The invention belongs to the field of energy storage batteries, and discloses an energy storage battery and a preparation method thereof, the energy storage battery comprises a positive pole piece, a negative pole piece and a solid electrolyte, and the solid electrolyte comprises aeolian sand, cement, inorganic insulating fiber, sodium salt and a specific type of additive. According to the energy storage battery, the aeolian sand is used as a solid electrolyte raw material of the battery for the first time, and the cement-based energy storage battery with high safety, high electronic insulativity, high ion transmission capacity and good cycle stability is obtained by matching the aeolian sand with inorganic insulating fibers, sodium salt and a specific type of additives, so that the application scene of the aeolian sand material is expanded; according to the present invention, the resource utilization of the aeolian sand is achieved, the harm caused by desertification can be delayed, the huge economic benefit can be generated, the battery can be directly used for manufacturing the building member, and the energy storage building material integration is achieved.

The invention relates to the technical field of vibration testing, in particular to a model test monitoring system for double-track high-speed railway roadbed vibration response characteristic research, which is provided with a roadbed model box, a characteristic acquisition module, a migration and deviation analysis module and a monitoring regulation and control module, the feature acquisition module is used for acquiring excitation parameters, migration deviation values and acoustic emission signals, the migration deviation analysis module is used for determining migration deviation trend values of the roadbed according to the migration deviation values of all monitoring interval sections, and the monitoring regulation and control module is used for adjusting the input amount of aeolian sand improved soil of all layers of the roadbed. According to the method, the offset characteristics of the roadbed below the track are rapidly identified in the excitation process, the input amount of each layer of aeolian sand improved soil of the roadbed is adaptively adjusted according to different offset characteristics, and the reliability of a double-track high-speed railway roadbed model test is improved.

The invention discloses a sand-avoiding anti-blocking gutter inlet device suitable for desert photovoltaic and wind power bases. Comprising a rain grate, a well body, a well chamber and a gutter inlet pipe, the structure is characterized in that: (1) the gutter inlet pipe is an upper sand-avoiding gutter inlet pipe which is arranged at the upper part of the side wall of the well body and can avoid desilting at the lower part of the well chamber; a sand blocking groove capable of blocking rain and sand from flowing into the well chamber is additionally formed in the outer wall of the well body; (3) the rain grate is a sand blocking and shielding type rain grate; (4) a hand-held well container is arranged in the well chamber, and a hand-held groove container is arranged in the sand blocking groove, so that wet sand, seedlings and grass are convenient to clean; and (5) a rat-proof and mosquito-repellent valve is arranged on the sand blocking groove. The invention has the advantages that: (1) wind sand and rain sand can be prevented from flowing into a well chamber and a rainwater pipe network to possibly cause waterlogging to erode power generation equipment; (2) the water collection effect can be improved; mice and mosquitoes can be prevented from going in and out of the well chamber to propagate and spread diseases. The sand-avoiding anti-blocking gutter inlet device serves as a starting part of a rainwater pipe network and is suitable for being used when rainwater collecting facilities are built and the rainwater pipe network is laid in desert photovoltaic and wind power bases.

The invention provides a method for preparing hydrophobic aeolian sand mortar by internally doping stearic acid wet-process modified fly ash, and belongs to the field of building materials.The preparation method comprises the steps that firstly, a hydrophobic layer is formed on the surface of fly ash through stearic acid wet-process modification, the stearic acid wet-process modified fly ash is prepared, then part of cement is replaced according to the proportion, and the hydrophobic aeolian sand mortar is prepared. And mixing with aeolian sand and the like, pulping, curing and forming. The hydrophobic aeolian sand mortar has the beneficial effects that the prepared hydrophobic aeolian sand mortar has efficient hydrophobicity and air permeability, water seepage can be blocked, the interior is kept dry, the hydrophobic surface endows the characteristics of stain resistance and easy cleaning, and the maintenance cost is reduced. Meanwhile, high-valued utilization of solid wastes such as fly ash and aeolian sand is realized, and durability such as erosion resistance and freeze thawing resistance is enhanced through synergism of active components and a gel system. The process is simple, convenient and controllable, is suitable for industrial production, is suitable for rigorous waterproof scenes such as hydraulic engineering, underground engineering and ocean engineering, provides a new scheme for high-performance green mortar, and has environment-friendly and engineering application values.

The invention relates to the technical field of roadbed filling, in particular to a method for monitoring the filling process of aeolian sand improved soil for a high-speed rail roadbed, which comprises the following steps: filling the high-speed rail roadbed with the aeolian sand improved soil in a layered filling manner, dividing the surface of a compaction layer into a plurality of areas, and uniformly sprinkling water to the plurality of areas according to a preset sprinkling amount, determining whether the pore distribution of the aeolian sand improved soil of the compaction layer is uniform or not according to the infrared thermal imaging image of the single area after watering, and optimizing the loose laying thickness of the new filling layer; acquiring a thickness loss rate so as to adjust an overlapped rolling area of the road roller in the re-pressing process based on the over-pressing area, and adjusting the vibration frequency of the road roller in the re-pressing process based on the under-pressing area; obtaining the initial position of the interlayer interface after the newly-filled layer finishes initial pressing and the real-time position of the interlayer interface in the re-pressing process, and optimizing the vibration frequency according to the distance stability; and the preset water spraying amount is optimized based on the surface flatness characterization value of the new filling layer in the final pressing process. The filling quality of the high-speed rail roadbed is improved.

The invention discloses a goal type sand catching barrier and an excavation-free sand stabilization system and method for gobi areas. The excavation-free sand stabilization system for the gobi area comprises a suspension type wind blocking barrier, a goal type sand capturing barrier and a suspended sand stabilization assembly which are sequentially arranged in the main wind direction, the distance between the suspension type wind blocking barrier and the goal type sand capturing barrier is d1, the distance between the goal type sand capturing barrier and the suspended sand stabilization assembly is d2, and the distances between the suspended sand stabilization assembly and a protected object are d3 and d1lt; the h1 is the height of the suspension type choke barrier, the value range of the h1 is 1.5-2.5 m, and the value range of the d2lt is 1.5-2.5 m; 20h2 and h2 are the height of the goal type sand capturing barrier, the value range of h2 is 1.5-2.5 m, the value range of d3 is 10-50 m, the suspended choke barrier and the goal type sand capturing barrier in the upwind direction can effectively capture wind and sand, and the suspended sand fixing assembly in the downwind direction can thoroughly fix the remaining unblocked wind and sand, so that the sand damage of the gobi desert is reduced, and meanwhile, the sand is prevented from being blocked by the suspended sand fixing assembly in the downwind direction. And the problem of dust flying possibly caused by engineering construction and human intervention in the sand wind protection process is solved.

The invention relates to the technical field of road engineering materials, and particularly discloses a solid waste aeolian sand mixed base material and a preparation method thereof. The solid waste and aeolian sand mixed base material is composed of industrial solid waste, aeolian sand, cement and water. The mixing amount of the cement accounts for 0.5%-2.5% of the total mass of the aeolian sand and solid waste mixture; the mixing amount of the aeolian sand accounts for 20-80% of the total mass of the aeolian sand and solid waste mixture; the solid waste premix is a mixture of carbide slag, desulfurized gypsum and fly ash. According to the invention, low-quality carbide slag, desulfurized gypsum and fly ash are mainly used as raw materials, and the mechanical properties of the material are optimized by regulating and controlling the dosage ratio of the raw materials and utilizing a composite solid waste activity excitation and low-dosage cement coordinated modification technology, so that the material can meet the basic requirements of desert highway construction; the problems that according to an existing aeolian sand material curing technology, due to the fact that a large amount of additives are added, cost is high, and durability is poor are solved.

The application discloses a fly ash-based sand-fixing system, a sand-fixing method and application. The sand-fixing system comprises fly ash-based sand-fixing particles, a fly ash-based sand-fixing plate device and a fly ash-based sand-fixing agent; the fly ash-based sand-fixing particles are laid on a sand surface layer and used for slowing down wind speed and intercepting floating sand; the fly ash-based sand-fixing plate device comprises a plate body and a fixing member, the plate body is perpendicular to a main wind direction, and the fixing member is used for achieving detachable splicing of adjacent plate bodies, so as to form a three-dimensional grid protection structure and block wind sand migration; and the fly ash-based sand-fixing agent is applied to the sand surface layer to form a consolidated layer and consolidate the surface sand body. The fly ash-based sand-fixing particles, the fly ash-based sand-fixing plate device and the fly ash-based sand-fixing agent are cooperated to form an initial stable layer, a physical barrier and a consolidated layer, and the sand-fixing system has the advantages of high strength, environmental protection, long-term effect and economy and is suitable for rapid treatment of desertification land.

The utility model relates to the technical field of sand prevention and control, in particular to a sand prevention and control coaming structure which comprises an installation bottom plate, a plug pin column is arranged at the bottom of the installation bottom plate, a coaming shell is installed on the outer wall of the installation bottom plate, and a lifting assembly is installed on the inner wall of the coaming shell. A connecting assembly is installed on the side wall of the coaming shell, air inlet holes are formed in the opposite outer walls of the coaming shell, and triangular plates are arranged on the opposite side walls of the coaming shell. According to the device, airflow is directly blown into the connecting shell, the connecting shell drives the sliding shell to slide upwards on the inner wall of the sliding rail, then the airflow is blown out through the air outlet, the sliding shell and the coaming shell are matched with each other to adjust the height, and the device automatically adjusts the height of the fence according to the strength of wind and sand; and when the two groups of coaming shells move, the fixing plates are driven to move respectively, and the connecting glue sticks between the fixing plates can be elastically deformed, so that the practicability of the device is better.

The invention discloses an active turbulent flow type sand blocking system. The active turbulent flow type sand blocking system comprises a first turbulent flow belt, wherein the first turbulent flow belt comprises a first supporting column, a first cable net and a first wind resistance plate; the plurality of first supporting columns are arranged side by side into a plurality of rows and are distributed at intervals; the first cable net is connected between every two adjacent first supporting columns in each row; and a plurality of first wind resistance plates are arranged on each row of first cable nets, and the plurality of first wind resistance plates on each row of first cable nets are distributed between the adjacent first supporting columns at intervals. According to the active turbulent flow type sand blocking system, the turbulent flow field is constructed and formed through point vortexes formed at all the wind blocking plates, the turbulent flow field is used for achieving active turbulent flow on wind-sand flow, macroscopic ordered kinetic energy efficient dissipation is conducted on the wind-sand flow, and the purposes of effective interception and sedimentation are achieved.

The utility model discloses a sand removing device for a directional fan of a pumping well polish rod sealer. The sand removing device comprises a fixing rod, a notch flange, a support, a transmission shaft, a fixing support, an air bellow, an impeller mechanism and a belt wheel mechanism. The air outlet of the air bellow is communicated with the interior of the polish rod sealer through a pipeline, the fixing rod is inserted into the wellhead of an oil well, after wind and sand are blown, the blade fan can be blown to rotate, the blade fan drives the transmission shaft to rotate through the transmission mechanism, the transmission shaft drives the belt wheel mechanism to rotate, the impeller mechanism in the air bellow rotates, and after the impeller mechanism rotates, the belt wheel mechanism rotates. Air is sucked from the air inlet and then is blown into the polish rod sealer through the pipeline of the air outlet, so that convection is formed between air in the polish rod sealer and external sand wind, wind is controlled by wind, external natural wind is used for manufacturing directional wind, sand grains on a polish rod, making contact with the polish rod sealer, of a pumping well of a machine are cleared away, and the polish rod sealer is cleaned away. The problem that the sucker rod is damaged due to the fact that sand blown into the sealer is solved, the filter is arranged at the air inlet, and sand is prevented from being blown into the sealer from the inside.

The application discloses a kind of anti-frost heaving and thawing subgrade and its construction method, blind ditch and aeolian sand layer are arranged at the bottom of the subgrade, from bottom to top, pebble layer, soil replacement layer, semi-rigid structure layer, anti-freezing temperature insulation layer, waterproof layer and pavement layer are sequentially arranged in the subgrade, the pebble layer is embedded with ventilation layer, which is used to ventilate and cool the lower part of the subgrade to prevent thawing and sinking, the semi-rigid structure layer is embedded with heat pipe in the anti-frost heating system, and geotextile drainage layer extending to the outside of the slope is arranged above and below the heat pipe, which is used to heat the upper part of the subgrade and drain water to prevent frost heaving.The application uses solar energy to heat the inside of the subgrade, and effectively improves the absorption rate of solar energy by setting heat collector and heat absorption cavity, which improves the heating effect of the upper part of the subgrade to prevent frost heaving, and at the same time, strengthens the heat dissipation of the lower part of the subgrade to prevent thawing and sinking.

The present invention relates to the field of vibration testing technology, and in particular to a model test monitoring system for studying the vibration response characteristics of a double-track high-speed railway subgrade. The present invention provides a subgrade model box, a feature acquisition module, a migration analysis module, and a monitoring and control module. The subgrade model box is used to monitor the vibration response characteristics of the subgrade. The feature acquisition module is used to obtain excitation parameters, migration vectors, and acoustic emission signals. The migration analysis module is used to determine the migration trend of the subgrade based on the migration vectors of each monitoring interval. The monitoring and control module is used to adjust the amount of aeolian sand-improved soil added to each layer of the subgrade. The present invention achieves rapid identification of the deviation characteristics of the subgrade under the track during the excitation process, and adjusts the amount of aeolian sand-improved soil added to each layer of the subgrade according to the different adaptability of the deviation characteristics, thereby improving the reliability of the double-track high-speed railway subgrade model test.

The application provides a sound wave conversion multi-directional sand collecting instrument, and relates to the technical field of sand collecting instruments. The sound wave conversion multi-directional sand collecting instrument comprises a support, collecting boxes, sound wave sensors, wind speed sensors and a processor. The collecting boxes are arranged at intervals around the support. The bottom of each collecting box is provided with a sound wave sensor which converts the sound wave generated by the impact of sand particles into an electric signal. One wind speed sensor is installed on one side of each collecting box to detect the speed of the wind-sand flow entering the collecting box. The processor is electrically connected with the sound wave sensors and the wind speed sensors. The processor counts the electric signals, forms a sound wave spectrum, and calculates the number a of sand particles and the mass m of a single sand particle entering the collecting box according to the sound wave spectrum and the speed. The total mass M of the sand particles is calculated according to the number a and the mass m. The sound wave conversion multi-directional sand collecting instrument can detect the wind-sand activity in all directions, is not limited by the particle size of the sand particles, and does not need manual weighing, so it is convenient and easy to use.

The invention discloses a photovoltaic desertification control system based on photovoltaic electric field waste and a construction method and application of the photovoltaic desertification control system. The photovoltaic desertification control system comprises a grid sand barrier unit, a sand blocking barrier unit, a vegetation planting unit and a sand fixing barrier unit, wherein the grid sand barrier unit and the sand blocking barrier unit are sequentially arranged on the periphery of a photovoltaic field area in the main wind direction; and the vegetation planting unit and the sand fixing barrier unit are arranged in the photovoltaic field area. Each grid sand barrier unit comprises a grid sand barrier extending in a zigzag shape on the ground, and each grid unit is composed of a plurality of vertical barrier bodies and a support; the sand-blocking barrier unit comprises a ground trapezoidal sand-blocking barrier and is composed of a support and two barrier bodies which are symmetrically and obliquely erected on the two sides of the support. The vegetation planting unit comprises a planting plate covering the ground between photovoltaic panels; the sand-fixing barrier unit comprises a ground straw bionic sand-fixing barrier under a photovoltaic panel. The barrier body is processed by a waste photovoltaic panel packaging base, and the support and the support are respectively processed by waste cable packaging rollers. The system blocks sand on the periphery and stabilizes sand in the field, so that the photovoltaic electric field is protected from being damaged by wind and sand, and stable operation of the photovoltaic electric field is guaranteed.

The invention discloses an improvement method for soluble salt in sandy soil, which comprises the following steps: S1, screening the soluble salt-containing sandy soil, separating and removing salt-containing fine particles with the particle size less than the preset particle size, and retaining coarse-particle aggregate; s2, mixing the aeolian sand with fly ash to form a composite modifier; s3, mixing the coarse particle aggregate with the composite modifier to form a uniform mixed soil body; and S4, the mixed soil body is compacted and maintained. Fine particle bodies enriched with soluble salts are removed through physical screening, then the obtained coarse particle aggregate is combined with the aeolian sand and the fly ash to react to generate a gelling substance, the aeolian sand and the coarse particle aggregate are firmly bonded, the fly ash can adsorb and fix a small amount of salt remaining on the surface of the coarse particle aggregate, and the salt content in the coarse particle aggregate is reduced. Salt migration, crystal expansion and corrosion to the structure are effectively inhibited; furthermore, the unconfined compressive strength, the shear strength and the integrity of the improved soil body are remarkably improved, so that the soil body meets the strength and stability requirements of projects such as roadbeds and base layers.

The utility model relates to the technical field of greenhouses, in particular to a greenhouse ventilation opening sand-proof structure which comprises an installation frame, a ventilation opening and a sand-proof device, the ventilation opening is formed in the surface of the installation frame, the sand-proof device is arranged on the surface of the ventilation opening, the sand-proof device comprises a sand-proof assembly, a sand discharging assembly and an auxiliary assembly, and the sand-proof assembly comprises a sliding groove. The sliding grooves are formed in the surfaces of the ventilation openings, the surfaces of the sliding grooves are slidably connected with sand-proof nets, the surfaces of the sand-proof nets are fixedly connected with first springs, the ends, away from the sand-proof nets, of the first springs are fixedly connected with the surfaces of the sliding grooves, and balls are arranged on the surfaces of the sand-proof nets in a rolling mode. The sand-proof device is arranged, sand and dust are prevented from entering the greenhouse through double protection of the sand-proof net and the filter net, the sand-proof net is continuously shaken through wind power when the sand storm is large, the sand and dust are shaken off so as to avoid blocking the sand-proof net, the shaken-off sand and dust can be discharged out of the ventilation opening, and the sand and dust are prevented from being blown by the wind power to rise again. And therefore, the durability of the equipment is effectively improved.

The application discloses a kind of considering wind sand additional effect's coal mining subsidence area boundary prediction method and system, belong to subsidence area boundary prediction field.The prediction method includes: obtaining the synthetic aperture radar image of coal mining area;According to synthetic aperture radar image, the first coal mining subsidence area boundary caused by monitoring coal mining;According to the mapping model of preposition and the wind speed and sand particle size of coal mining area, the wind sand movement boundary caused by wind sand migration is calculated, wherein, mapping model is the model for representing the mapping relationship between wind speed, sand particle size and wind sand movement boundary;The first coal mining subsidence area boundary is corrected using wind sand movement boundary, and the second coal mining subsidence area boundary is obtained.The method and system of the application improve the prediction accuracy of coal mining subsidence area boundary, and have higher dynamic adaptability.

The embodiment of the utility model provides a comprehensive protection system for wind and sand hazards in alpine valleys, which relates to the technical field of environmental protection, is used for being arranged on the main wind direction side of a railway crossing a river channel, and comprises two sand blocking units and two sand guiding units, the two sand blocking units are distributed on the two sides of the river channel, and the two sand guiding units are distributed on the two sides of the river channel. The two sand guiding units are distributed on the two sides of the river channel and located on the sides, close to the river channel, of the sand blocking units. Each sand blocking unit comprises a sand blocking fence, a sand blocking belt, a blocking and fixing combined belt and a mixed sand fixing belt which are sequentially arranged in the main wind direction, and the mixed sand fixing belts are located on the sides, close to the railway, of the sand blocking belts. The sand guide unit comprises a plurality of sand guide walls arranged at intervals in the main wind direction, and the sand guide walls are used for guiding sand into a river channel. The protection system can comprehensively treat wind and sand hazards of the valley railways in the cold and cold mountainous area according to local conditions, and is good in sand stabilization and sand blocking effect and good in protection effect on the railways along the line.

The invention discloses an equal-section tuyere sand amount uniformity regulation and control system of a wind and sand environment simulation test device, which comprises a sand supply device, an air duct and a regulation mechanism for regulating the wind and sand air volume, and is characterized in that the air duct comprises a flow collection cylinder, a first cylinder, a soft connection cylinder, a second cylinder, a conical cylinder and a diffusion cylinder which are arranged in sequence; the adjusting mechanism comprises a plurality of outer pipes arranged in an inner cavity of the diffusion barrel, an inlet of each outer pipe is communicated with the conical barrel, the outer pipes axially wrap the inner pipe, a strip-shaped seam is axially formed in the top of the inner pipe, and the strip-shaped seam is communicated with a sand supply opening of the sand supply device; a steel column is in clearance fit with an inner cavity of the inner pipe and connected with a driving mechanism. The tip of each outer pipe is provided with a slope facing the axis of the inner pipe, and the root of the slope is close to the front end of the inner pipe. According to the invention, the uniform regulation and control and the accurate regulation and control of the sand amount of the equal-section tuyere of the sandstorm environment simulation test device can be realized, and the uniformity and the stability of the erosion fluid of a single erosion spot area with the diameter of 10-30cm can be ensured.

The invention provides a wind sand erosion simulation device, and belongs to the technical field of environmental ecology research equipment, the wind sand erosion simulation device comprises a sand blasting machine, an air supply system and a gravel supply system, the inner side of the sand blasting machine is provided with a gravel recovery system, a test piece clamp, a slide rail, a nozzle and the like, and sand is conveyed to the nozzle through the external gravel supply system; the sand output from the nozzle is horizontally eroded towards the test piece; a test piece can be clamped and fixed through the clamp, the posture of the test piece can be adjusted, the clamp can move in the sand blasting machine, it can be guaranteed that the center position of the test piece is kept fixed at any horizontal or vertical inclination angle, and a round control valve used for accurately regulating and controlling the sand production amount is arranged at a material opening in the bottom of the gravel supply system. A certain amount of sand is arranged in the gravel supply system, and the sand conveying amount of one-time erosion is metered according to the mass of the sand conveyed through gravel supply. The device has the technical effects that the sand conveying amount of each time of erosion can be accurately metered, the simulation result is closer to reality, and the actual wind erosion condition can be reflected.

The invention discloses an omni-directional wind speed profile and sand flow structure monitoring device, and relates to the technical field of desertification control monitoring, the omni-directional wind speed profile and sand flow structure monitoring device comprises a supporting rod, an adjusting assembly, a wind speed assembly, a sand collection assembly and a height detection assembly, the sand collection assembly comprises a step plate, a sand inlet, a partition plate and a sand collection box, and the sand inlet is used for communicating the wind speed assembly with the sand collection assembly; the partition plate is used for controlling opening and closing of the sand inlet, airflow enters the air speed assembly through the air inlet and enables gravel in the airflow to fall into the sand inlet, and the partition plate enables the gravel to fall into the sand collecting groove when the sand inlet is opened; and the height detection assembly is used for detecting the height of the sand collection box and can also monitor the operation state of the wind speed assembly. By arranging the components, the purpose of uniformly distributing the gravity center is effectively achieved, the accuracy of wind speed monitoring is improved, and the workload of taking out sand is reduced.

The invention relates to the technical field of building materials, in particular to an aerogel thermal insulation board and a preparation method thereof.Building gypsum is adopted as a main cementing material, silica fume is added for supplementation, modified aerogel particles and aerogel powder are added as thermal insulation aggregate and filler, aeolian sand and an additive are added, and the aerogel thermal insulation board is prepared. The prepared aerogel insulation board is high in mechanical property, good in insulation effect and non-combustible when meeting fire.

The utility model relates to the technical field of vibration tests, and particularly discloses an aeolian sand roadbed vibration wave excitation test device which comprises an excitation mechanism, a clamping mechanism and a data acquisition mechanism. The vibration excitation mechanism comprises a signal generator, a power amplifier and a vibration exciter; the clamping mechanism comprises a clamping plate, a bolt and a transverse plate. The data acquisition mechanism comprises an acceleration sensor, a dynamic data acquisition unit and a data processor. Through the arranged excitation mechanism, the excitation state of a train at different speeds and under different load conditions can be effectively simulated by adjusting the output frequency and excitation force, the damage condition of the aeolian sand improved soil under different excitation conditions can be accurately obtained, and the damage condition of the aeolian sand improved soil under different excitation conditions can be accurately detected through the arranged data collector. The dynamic response characteristics of the cement modified aeolian sand sample under the excitation condition can be effectively obtained, so that the internal change of the cement modified aeolian sand sample is judged.

This invention discloses a solar-powered long-distance, low-energy-consumption transportation method for desert sand. The method first uses ArcGIS software to acquire topographic and environmental data of the transportation area between the aeolian sand collection location and the mining area. This data is then further extracted and processed to form path feature parameters, including slope, elevation change, surface undulation, transportation distance, and unit energy consumption. Next, a minimum energy consumption route optimization model is established based on these path feature parameters. Candidate transportation routes are comprehensively evaluated for energy consumption, and the lowest-energy-consumption transportation route is selected. Further optimization is performed based on the segmented energy consumption requirements, path length, and slope change of the lowest-energy-consumption transportation route. Based on the distribution of nodes, the layout scheme of the transmission line and solar power supply functional units is determined, and the transmission line and power supply functional units are arranged along the route. The solar power supply functional units include solar power generation units, solar energy storage units, power conversion units, and power supply control units. Simultaneously, based on the high-load sections, slope-changing sections, turning sections, or fault-prone sections of the lowest energy consumption transportation route, a monitoring point layout scheme is determined, and monitoring and control terminals and sensors are set up to monitor the operating status of the transmission equipment in real time, promptly identify wear, deviation, and other fault risks, and provide early warnings and adjustments. This method achieves low-energy consumption optimization for long-distance desert sand transportation routes, as well as energy supply configuration, intelligent monitoring, and feedback control during the transportation process, solving the problems of difficult energy supply, high energy consumption, and insufficient equipment reliability in existing desert sand transportation processes.

The utility model provides a sandstorm flow sand collecting device, which relates to the technical field of environment measurement and comprises a vertical frame and a base, the base is arranged at the bottom of the vertical frame, and the vertical frame and the base are of a combined structure assembled and disassembled in a pluggable mode. A plurality of unit boxes are vertically arranged in the vertical frame, sand collecting bags are embedded in the unit boxes, strip-shaped grooves with mesh faces inside are formed between the two sides of the sand collecting bags and the unit boxes in a penetrating mode, and side air channels connected with the strip-shaped grooves are formed in the outer ends of the unit boxes. A suction pump is arranged in the base, and a vertical pump pipe extends from the suction pump of the base to the vertical frame end; the vertical sand collection device has the beneficial effects that based on the vertically arranged sand collection structure, a box body with a corresponding specification is conveniently arranged according to a specific vertical distribution height and a collection environment through the vertically distributed unit type box body structure, and a vertical pump pipe at the middle end part of the unit box is combined with an external pumping structure; air flow can be conveniently pumped into the upper unit box, and suspended sand grains in the air flow can be collected in a short time.