278 results about "Aeolian sand" patented technology

The invention provides a microbial solidified sand barrier and a preparation method thereof, a cementing liquid and a microbial liquid are respectively added into aeolian sandy soil, the aeolian sandy soil is treated by a microbial induced calcium carbonate precipitation technology, and then the aeolian sandy soil is dried and solidified at a high temperature to obtain the microbial solidified sand barrier. The aeolian sandy soil is a basic material, the microbial liquid contains active microorganisms capable of inducing calcium carbonate precipitation, and the cementing liquid provides a calcium source and promotes a precipitation reaction. The cementing liquid comprises a soluble calcium source and urea, the microbial liquid is bacillus pasteurii liquid, calcium carbonate precipitation is induced in the aeolian sandy soil by means of metabolic activity of specific microorganisms, so that sandy soil is solidified, a firm sand barrier is formed, more efficient and environment-friendly wind and sand control is achieved, the wind erosion resistance of the aeolian sandy soil can be remarkably improved, and the service life of the aeolian sandy soil is prolonged. A new solution is provided for wind and sand disaster prevention and control in arid and semi-arid areas, and the defects of an existing sand stabilization technology are effectively overcome.

The invention provides a method for predicting the sand-bearing state of a ballast track bed based on deep learning. The method comprises the steps that a discrete element simulation model of a sandstorm track bed is established, and rigidity parameters of the sandstorm track bed in different positions and depth areas are obtained through analysis; based on the rigidity parameters, a vehicle-desertification ballast track coupling finite element simulation model is established, and the vibration acceleration of the sleeper in different sand-containing states is obtained through analysis; and inputting the vibration acceleration as training data into the constructed sand-bearing state prediction model to train the sand-bearing state prediction model to obtain a trained sand-bearing state prediction model, and performing sand-bearing state prediction by using the trained sand-bearing state prediction model to obtain a sand-bearing state prediction result. The sand-bearing state prediction model is a deep learning model based on a convolutional neural network and a long short-term memory network. According to the invention, the sand-bearing state of the ballast bed can be predicted with high precision. The method has important reference value for guiding line maintenance work and guaranteeing stable operation of the train.

The invention belongs to the technical field of power distribution boxes, particularly relates to a power distribution box with a wind and sand prevention function for gobi areas, and aims to solve the problem that ventilation efficiency is reduced due to the fact that a dense gauze is mounted at an air inlet of a power distribution box in the prior art in order to reduce wind and sand entering the power distribution box. A bottom frame support is fixed to the bottom of the electric box body, a second dustproof water tank is fixed to the bottom frame support, two groove-shaped sliding rails which are parallel to each other and extend right ahead are fixed to the position, close to the middle of the rear side, of the inner wall of the electric box body, and the same limiting truck is slidably connected between the two groove-shaped sliding rails. When the ventilation mechanism is started, external air with wind and sand is prevented from being directly sucked in, at the moment, the external air enters water in the second dustproof water tank through an air inlet hole with a downward hole opening in the top end of a rectangular penetrating pipe for dust falling firstly, and then the external air is led into the electric box body through an air inlet pipe; the air volume can be ensured to be large enough, and sand wind is prevented from entering the interior of the electric box body.

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 discloses a freeze thawing-wind erosion-load coupled concrete damage test device and method, and relates to the technical field of concrete performance test devices. The freeze thawing-wind erosion-load coupled concrete damage test device comprises a test box, a sand blowing assembly and a temperature control assembly, the test box is provided with a test cavity, a press machine used for clamping a concrete block and applying a load is arranged on the test box, the sand blowing assembly comprises a sand blowing pipe used for conveying wind sand to the concrete block, and the temperature control assembly is arranged on the sand blowing pipe. The included angle between the axis of the sand blowing pipe and the axis of the air supply pipe is adjustable, and the temperature control assembly is used for adjusting the temperature in the test cavity. The freeze-thaw-wind erosion-load coupled concrete damage test device can simulate a complex concrete service environment under the coupling action of freeze-thaw cycle, wind sand erosion and axial load, and more accurately reflect the initial damage evolution of the service concrete and the durability degradation law of the concrete with initial damage; and the accuracy of experimental research is improved.

The utility model belongs to the technical field of civil engineering test equipment, and particularly discloses test equipment for an aeolian sand highway subgrade reduced scale model, which comprises a model box and a subgrade reduced scale model, the subgrade reduced scale model is arranged in the model box, a loading device is arranged above the subgrade reduced scale model, a displacement meter is arranged on the upper surface of the subgrade reduced scale model, and a displacement sensor is arranged on the upper surface of the displacement meter. A miniature settlement rod is embedded in the roadbed reduced scale model, soil pressure sensors are laid in the roadbed reduced scale model in a layered mode, a plurality of fiber bragg grating strain gauges are embedded in the roadbed reduced scale model below the loading device, the soil pressure sensors are connected with a soil pressure cell collector, and the fiber bragg grating strain gauges are connected with a fiber bragg grating demodulator. The soil pressure cell acquisition instrument and the fiber grating demodulation instrument are connected with the PC through wires; a displacement meter, a miniature settlement rod, a soil pressure sensor, a fiber bragg grating strain gauge and the like are laid and installed on the roadbed reduced scale model to detect various performance indexes of the roadbed reduced scale model after pressure is applied, and guidance is provided for actual engineering.

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 discloses a multifunctional segmented combined type sand blocking wall system, and relates to the technical field of engineering sand prevention. Comprising two supporting piles, a lower sand blocking structure, a middle sand blocking structure and an upper sand blocking structure, the middle sand blocking structure and the lower sand blocking structure are both installed between the two sides of the two supporting piles, the middle sand blocking structure is installed above the lower sand blocking structure, and the upper sand blocking structure is installed at the tops of the supporting piles. The lower sand blocking structure, the middle sand blocking structure and the upper sand blocking structure form a three-section type sand prevention structure. Through the arrangement of the multi-section type sand blocking structure, differentiated treatment is carried out according to the wind and sand conditions of different heights in the same area, the wind and sand can be weakened, the wind and sand are dispersed all around after being impacted, the wind speed is reduced, the sand carrying capacity is weakened, in the implementation process, the weight of the sand burying cylinders is increased due to the increase of grit, and the sand burying cylinders are buried in the sand, so that the sand burying efficiency is improved. And the sand burying cylinder is in full contact with the sand, so that sufficient stability is provided for the supporting pile after the self weight is increased.

The invention provides an aeolian sand high fill roadbed stability monitoring method, and relates to the technical field of road construction. The method for monitoring the stability of the aeolian sand high-fill roadbed comprises the following steps that the aeolian sand high-fill roadbed is filled with a high-fill roadbed dry pressing method; a sensing device is arranged on the roadbed to monitor the state information of the roadbed in real time; the state information is transmitted to a server for processing, and the stability of the roadbed is judged according to the state information. The settlement information of the roadbed, the displacement information of the section of the roadbed in the horizontal and vertical directions and the environment information are acquired in real time and transmitted to the cloud server for data processing and analysis, so that the deformation and the stability of the roadbed are accurately monitored in real time, potential problems can be found in time, corresponding measures can be taken, and the safety of the roadbed is improved. The high repair and maintenance cost in the later period is effectively avoided, the aeolian sand dry pressing construction technology can be effectively adjusted in a targeted mode, a firmer and more durable road is constructed, and a powerful guarantee is provided for traffic convenience and stability.

The invention relates to the technical field of pavement aeolian sand states, in particular to a lightweight highway pavement aeolian sand change state recognition method and system. Firstly, an unmanned aerial vehicle is used for carrying a high-resolution camera to collect image data along a highway, and meanwhile meteorological data are collected and preprocessed. Converting the image into a grey-scale map, identifying an aeolian sand region through threshold judgment and morphological processing, and calculating a weighted gray value to judge the state of the aeolian sand region; then determining deformation and quantitative change characteristic factors of the aeolian sand, and analyzing correlation coefficients of the deformation and quantitative change characteristic factors and meteorological data; and constructing a deformation and quantitative change identification model, and outputting a deformation quantity and a quantitative quantity. And finally, determining the model weight according to the proportions of different types of aeolian sand, obtaining a change state index by combining the model output value and the weight, and judging the change state of the aeolian sand according to a preset threshold value, thereby realizing effective identification of the change state of the aeolian sand on the highway pavement. The method has the advantages that data acquisition is comprehensive, state recognition is accurate, influence factors can be mined, and a scientific basis is provided for road maintenance.

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 belongs to the field of eolian sand area coal mine ecological restoration, and particularly relates to a restoration method for ground fissures caused by coal mining subsidence in an eolian sand area. Dividing the ground fissures into boundary ground fissures, middle ground fissures and tension ground fissures according to the development law of the ground fissures caused by coal mining subsidence in the aeolian sand area; according to the characteristic that boundary ground fissures are slightly pulled, the ground fissures can be filled to the maximum extent by adopting a repairing means of drilling a loose stratum before mining, mixing a mixture of dry fly ash and dry cement powder and injecting water for curing after mining; according to the characteristics of initial tension and later compression of the middle ground fissure, cementing slurry is injected when the stratum on one side collapses and is tensioned, and a uniform smearing effect is achieved after the stratum on the other side collapses, so that the middle ground fissure is filled to the maximum extent. And aeolian sand filling slurry is injected into the tensile ground fracture with the shallow development depth. According to the development law of the ground fissures caused by coal mining subsidence in the aeolian sand area, a targeted repairing means is adopted, and the repairing effect is good.

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 discloses a detection system and method of a sand lysimeter, and belongs to the technical field of sand lysimeters, the detection system comprises an acquisition module, an analysis module, a calculation module and an output module; the acquisition module is used for acquiring the mass of the inner barrel and the soil column in the barrel through a sensor on the outer barrel; the mass of water in the water receiving basin is obtained through a sensor of the water receiving basin; the analysis module is used for carrying out anomaly analysis on the quality data of the sensor and marking the abnormal quality data; the calculation module is used for calculating evaporation capacity according to metering interval selection of man-machine interaction; and the output module outputs the evaporation capacity as a detection result of the sand lysimeter. Abnormal data caused by wind and sand interference can be effectively judged and marked and adjusted, and deviation of evaporation capacity calculation caused by abnormal values is avoided.

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.