386 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 relates to the technical field of photovoltaic sand control, and provides a comprehensive photovoltaic sand stabilization device and a sand stabilization method.The comprehensive photovoltaic sand stabilization device comprises two fixing bases, a protective net is installed between the two fixing bases, first threaded rods are installed on the inner sides of the fixing bases, and second motors are connected to the tail ends of the first threaded rods; a second threaded rod is installed on the outer side of the fixing base, and the tail end of the second threaded rod is connected with a first motor. The photovoltaic power generation mechanism is installed close to the water accumulation net, the photovoltaic panel can be overturned in the morning and evening, the front face of the overturned photovoltaic panel makes contact with the water accumulation net obliquely downwards, water molecules in air are condensed and attached to the photovoltaic panel and the water accumulation net through the water accumulation net at night, and the photovoltaic face of the photovoltaic panel is cleaned; dust raised by wind and sand in the daytime is prevented from influencing the generating capacity of the photovoltaic panel, meanwhile, water condensed by the photovoltaic power generation mechanism and the water accumulation net supplements water for growth of vegetation on the ground surface, and restoration of the vegetation in the desert area is facilitated.

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 field of steel pipe machining, and particularly relates to an intelligent grinding device for steel pipe machining. A bottom plate is arranged on the steel pipe grinding machine. Gauze of the multi-leaf wheel is shifted through the shifting plate, so that the gap between every two adjacent pieces of gauze in the multi-leaf wheel is enlarged, meanwhile, air suction is conducted through the air suction pipe, chippings and sand blown by the gauze of the multi-leaf wheel are sucked away, the gap between every two adjacent pieces of gauze in the multi-leaf wheel is enlarged through the shifting plate, and therefore the dust removal effect is improved. Parts of chippings and sand wind can fall down under the influence of the gravity of the chippings and the sand wind, the cleaning effect of the multi-leaf wheel is improved, the polishing effect of the multi-leaf wheel on a steel pipe is improved, splashing of the chippings and the sand wind around is reduced through shielding of a circular ring, a disc and a housing, the circular ring, the disc and the housing are matched to jointly cover the outer side of the multi-leaf wheel, and the polishing effect of the multi-leaf wheel is improved. And the pressure intensity at the multi-leaf wheel is quickly reduced, so that the cleaning efficiency of the multi-leaf wheel is improved.

The invention provides foamed light soil. The foamed light soil is prepared from the following raw materials in percentage by mass: 0.01%-30.00% of aeolian sand, 0.01%-30.00% of oily sludge pyrolysis residues, 25.00%-76.00% of cement, 3.00%-5.00% of a foam group and 20.00%-25.00% of water, wherein the foam group is prepared by mixing a foaming agent with water and then foaming. The invention provides a preparation method of foamed light soil. The foamed light soil prepared by compounding the aeolian sand and the oily sludge pyrolysis residues with the cement has good fluidity and mechanical properties, such as high compressive strength, high breaking strength, no heavy metal leaching, no influence on the environment and the like, meets the requirements of different layers and different grades of highway subgrades, and has good application prospects. And the regulation of foam light soil on the roadbed strength is met.

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 utility model discloses a monitoring facility for railway sandstorm disaster prevention and control, which comprises a support frame, the support frame is vertically and rotatably connected with a collecting pipe, the collecting pipe is connected with a plurality of sand collecting cylinders, the plurality of sand collecting cylinders are arranged at equal intervals along the height direction of the collecting pipe, the collecting pipe is provided with an air outlet, and the air outlet is communicated with the collecting pipe. A sand filter screen is arranged in the air outlet; the top end of the collecting pipe is fixedly connected with a wind indicator, the open end of the sand collecting barrel faces an indicating arrow of the wind indicator, a collecting bag is arranged on the supporting frame, and the bottom end of the collecting pipe is communicated with the collecting bag. By arranging the multiple sand collecting barrels arranged in the vertical direction, the multiple sand collecting barrels can collect sand wind at different height positions at the same time, favorable data guarantee is provided for follow-up sand content prediction, the sand content prediction accuracy is improved, and safety accidents are reduced.

The invention relates to a device and method for testing the aging resistance of an anticorrosive coating of power transmission and transformation equipment, and the device comprises a sealed housing, an environment simulation unit, a sand simulation unit and a sensing control unit, and the sealed housing is internally provided with a tested sample; the environment simulation unit, the sandstorm simulation unit and the sensing control unit are all fixed on the sealed shell and are respectively positioned around the tested sample; the environment simulation unit and the sand simulation unit are in communication connection with the sensing control unit; the sensing control unit is used for sensing the environment in the sealed shell, controlling the environment variables of the environment simulation unit and the sand wind simulation unit, and analyzing the influence of the environment on the anti-aging performance of the anti-corrosion coating according to the anti-aging condition of the anti-corrosion coating of the tested sample under different environment variables; a traditional testing device for single testing is changed into multivariable environment testing equipment, so that the protection performance and aging failure mechanism analysis of the coating of the power transmission and transformation equipment in a multi-factor coupling environment of an electromagnetic field, wind sand and the like is realized.

The invention discloses an elevated photovoltaic and sand prevention system, and the system comprises a photovoltaic unit which comprises a plurality of elevated sand burying prevention photovoltaic devices which are arranged in a photovoltaic field area in an array manner, each elevated sand burying prevention photovoltaic device comprises a photovoltaic panel and an elevated photovoltaic support, and the minimum distance between the photovoltaic panel and the ground surface is greater than a set value; the sand blocking and mist catching unit comprises an inclined sand blocking and mist catching barrier arranged in the upwind edge area of the photovoltaic field area, the inclined sand blocking and mist catching barrier comprises a plurality of sand blocking and mist catching plates, and mist catching mechanisms are arranged on the surfaces of the sand blocking and mist catching plates; the engineering sand stabilization unit comprises sand stabilization grids, and the sand stabilization grids are arranged at one or more positions in an inter-dune zone, a dune windward slope toe and a slope middle zone in the photovoltaic field; the sand stabilization and mist catching unit comprises a three-dimensional net; a biological sand fixation unit; therefore, the photovoltaic module is prevented from being damaged by sand storm such as burying by quicksand and undercutting, and is not influenced by topographic fluctuation.

The invention relates to a method for solidifying aeolian sand and resisting wind erosion by combining microorganisms with sugar calcium, which is characterized in that a sandy soil body is more sufficiently and efficiently solidified by utilizing a synergistic effect mechanism of combining MICP with sugar calcium, so that the purposes of enhancing the strength of the sandy soil body and resisting natural environment erosion are achieved; in the process of solidifying the sandy soil by combining sugar and calcium with MICP, the sugar and calcium can promote the growth of microorganisms, regulate the reaction environment and contribute to the generation of calcium carbonate precipitates, so that the sandy soil particles play a role in cementation, and meanwhile, the sugar and calcium are dissolved in water to release viscous substances, so that the generated calcium carbonate precipitates are more uniform, and the quality of the soil is improved. The effect of solidifying a sandy soil body is more obvious; the method adopts green and environment-friendly materials, is suitable for reinforcing a large-area sandy soil area, has a very remarkable curing effect, has the excellent characteristic of resisting natural environment erosion, and is widely applied to the fields of sandy soil curing, protection and the like.

The utility model relates to the technical field of sandstorm protection, in particular to a sandstorm filtering device for an SVG (static var generator) chamber, which comprises a shell, a filtering mechanism is mounted on the shell and comprises a mounting plate, the mounting plate is mounted at the top of the shell, and two mounting racks which are arranged in a laminated manner are slidably connected into the mounting plate. Wherein one mounting frame extends into the shell, a plurality of filter screens are slidably connected into the two mounting frames, one end of each filter screen extends out of one side of the corresponding mounting frame, a driving mechanism is mounted on the inner side of the top of the mounting plate and comprises a rotating shaft, and the rotating shaft is rotatably connected to the center line of the inner side of the top of the mounting plate. A chuck is mounted at one end of the rotating shaft, a pull rope is connected to the chuck, the two ends of the pull rope are connected with the centers of one sides of the two mounting frames correspondingly, and a dismounting and mounting mechanism is mounted on the mounting plate; and the filter screen can be rapidly replaced, and wind and sand cannot enter the filter screen in the replacement process.

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 belongs to the technical field of wind and sand measurement, and particularly discloses an arid region wind and sand measurement device which comprises a gas collection tank, the front wall and the lower wall of the gas collection tank are open, a cross beam is fixedly arranged at the intersection position of the open positions of the front wall and the lower wall of the gas collection tank, a sand falling box is fixedly arranged on the lower side of the gas collection tank in a communicating mode, and a sand collection groove is formed in the bottom of the sand falling box. A steering tripod is arranged on the lower side of the sand falling box, an anti-disturbance air collecting and sand falling switching mechanism is arranged on the cross beam, a mounting cover is fixedly arranged on the rear side of the air collecting box, a magnetic type reciprocating linkage driving mechanism is arranged in the mounting cover, and a wind speed and wind direction monitor is fixedly arranged on the upper side of the air collecting box. According to the device, the volume of air flowing through the device in the measurement process can be counted, the sand content can be accurately calculated, wind and sand are guided into the device in a natural wind simulation mode, wind and sand disturbance is avoided, a closed sand collection space is provided, and it is ensured that sand entering the device can completely settle into the collection device.

The invention relates to the technical field of fan cabins, and provides a wind driven generator cabin structure capable of preventing wind sand invasion, which comprises a cabin cover, a bottom cabin is arranged below the cabin cover, the bottom cabin is provided with a ventilation pipe communicated with the cabin cover, and a filtering assembly is arranged in the ventilation pipe; the filtering assembly comprises a net-shaped filtering belt, a first belt wheel and a second belt wheel, the net-shaped filtering belt is connected with the first belt wheel and the second belt wheel in a winding mode, and the net-shaped filtering belt is matched with the inner diameter of the ventilation pipe for shielding; the wind-driven impeller is arranged outside the ventilation pipe and coaxially connected with the first belt wheel, and the wind-driven impeller rotates to drive the first belt wheel and the net-shaped filter belt to rotate circularly; the ventilating pipe is externally connected with a sand discharging pipe with a downward pipe opening, and the pipe opening of the sand discharging pipe is close to the lower end of the net-shaped filtering belt. Self-cleaning of the filter screen can be achieved, normal ventilation and filtering effects are guaranteed, and the phenomenon of filtering blockage is avoided.

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 provides low-shrinkage mixed steel fiber recycled aggregate ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of concrete. The low-shrinkage mixed steel fiber recycled aggregate ultra-high performance concrete has the advantages of being high in strength, good in toughness, low in shrinkage rate, low in cost and environmentally friendly at the same time, large-dosage fly ash is used for replacing part of cement to serve as a cementing material, the volcanic ash activity effect and the particle filling effect of the high-shrinkage mixed steel fiber recycled aggregate ultra-high performance concrete can be fully exerted, and the service life of the low-shrinkage mixed steel fiber recycled aggregate ultra-high performance concrete is prolonged. And the emission of carbon dioxide can be reduced. The aeolian sand and the recycled fine aggregate are used for replacing traditional quartz sand through grading optimization, then the shrinkage of the ultra-high performance concrete is reduced by doping the recycled coarse aggregate and utilizing the volume stabilization effect of the recycled coarse aggregate, and finally the bending toughness of the ultra-high performance concrete is improved by adding the long steel fibers to cooperate with the fine steel fibers.

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.