146 results about "Capillary water" patented technology

The invention relates to the technical field of soil ecological monitoring, in particular to a coastal saline soil dynamic monitoring and early warning system based on the Internet of Things, which comprises a collaborative monitoring unit, a fusion resolving analysis unit and an early warning trigger unit. The capillary water rising flux and the underground water seepage direction are synchronously monitored, the fusion resolving analysis unit dynamically corrects the capillary conductivity through a pore scale migration model in combination with three-dimensional pore structure parameters reconstructed through soil CT scanning, the salt exchange capacity is resolved, the salt increment is predicted through a long and short-term memory network, and a decision coefficient is calculated. The early warning trigger unit judges the secondary salinization risk when the conditions are met, activates drainage equipment and pushes early warning, the problems that traditional monitoring dimensions are single and the early warning precision is insufficient are solved, and the method is suitable for dynamic monitoring and risk prevention and control of coastal salinized soil.

The invention relates to a system for controlling development of a hot melt pond through regulation and storage combination and ecological conservation. The system comprises water storage type floating bed units, ecological grass felt units and capillary water supply units, wherein the water storage type floating bed units cover the water surface of the hot melt pond and are arranged in an array mode, the ecological grass felt units are arranged on the water storage type floating bed units, and the capillary water supply units are connected with the ecological grass felt units. Each water storage type floating bed unit is a prefabricated floating carrier of an inverted convex structure, the whole upper part of each floating carrier is a concave groove, the bottom of each floating carrier is provided with array type concave water storage small pools, and the four corners of each floating carrier are provided with fixed round holes; drainage and ventilation holes are distributed in the rib top between every two adjacent array type concave water storage small pools; each ecological grass felt unit is sequentially composed of a vegetation layer, a capillary water blocking layer, a substrate layer and a porous supporting layer from top to bottom. The capillary water supply unit is composed of a main capillary water supply part and an auxiliary capillary water supply part. The method can effectively reduce the thermal erosion effect of the hot melting pond, and achieves the purpose of promoting the stability of frozen soil engineering near the hot melting pond.

The invention belongs to the field of cultural relic protection, and particularly relates to an intelligent regulation and control method for the moisture content of an earthen archaeological site. The method comprises the steps that a precipitation well is dug near the earthen ruins, and a water suction pump is arranged in the precipitation well; then adjusting the underground water level of the earthen ruin according to the following steps: (1) acquiring underground water level data near the earthen ruin; (2) judging whether the underground water level is higher than a set limit value according to the underground water level data; and (3) when the underground water level is higher than the underground water level limit value, a water pump in the dewatering well starts a water pumping mode until the underground water level data reach the underground water level limit value. In order to ensure that the moisture content of the earthen archaeological site is stabilized at a certain numerical value, on one hand, when the moisture content is too high, the underground water level is intelligently controlled, then capillary water is controlled to rise, and a water source is cut off from the source, and on the other hand, when the moisture content is too low, moisture evaporation in the earthen archaeological site is effectively relieved by spraying a magnesium acrylate solution with a specific concentration; the constancy of the moisture content of the earthen ruins is ensured.

The invention relates to the technical field of slope ecological restoration, and discloses an exposed rock wall ecological restoration composite anchoring device based on a capillary water guide system, which comprises a triangular basin-shaped steel reinforcement framework anchored on a rock wall, an inner side HDPE plate, an outer side HDPE plate, an EVA soft plate, a polyurethane foaming heat insulation layer and a gravel water storage bin, steel bars are anchored on a rock slope to form a basin-shaped device framework, an HDPE plate and a polyurethane foaming heat insulation layer are arranged on the framework to form a triangular basin-shaped device anchored on a rock wall, and a water storage bin, nutrient soil and planting vegetation are arranged in the device, so that the purpose of slope greening is achieved. In addition, the device provides soil and moisture guarantee conditions for growth of vegetation, overcomes the defects of slow greening effect, heavy device mass and difficult lasting greening effect due to large-scale use of earth-rock engineering in a conventional greening technology, guarantees nutrition supply of the vegetation through soil and a water storage bin in the device, and improves the vegetation quality. And rapid and lasting regreening of the bare rock slope can be realized.

The invention discloses a 3D vapor chamber and a preparation method thereof.The vapor chamber comprises a lower cover plate, an upper cover plate and a plurality of copper pipes, the upper cover plate covers the lower cover plate to form a steam cavity, the copper pipes are installed on the upper cover plate and penetrate through the upper cover plate to be communicated with the steam cavity, and the steam cavity is filled with a working medium; a plurality of supporting columns used for supporting the lower cover plate and the upper cover plate are arranged in the steam cavity, and a supporting piece used for supporting the copper pipe is arranged on the lower cover plate. While the capillary water return amount is increased, the upper copper pipe is supported, the structure is simple, the heat dissipation efficiency is high, the process is simple, and the cost is low.

The invention discloses a deep sea polymetallic nodule dewatering and drying system which comprises a dewatering module and a drying module. The dehydration module is used for dehydrating free gap moisture of deep sea metal nodules, the dehydration module separates the free gap moisture from the metal nodules in a mechanical vibration and extrusion crushing mode, and residual seepage water of the metal nodules in the storage process is collected and discharged. The deep sea metal nodule integrated treatment process is integrated on the ship, offshore in-situ treatment is achieved, and economic benefits are improved. By combining multiple stages of dehydration equipment, the dehydration efficiency of free pore water of the metal nodule is improved. The dewatered metal nodule is heated and dried by waste heat of the smoke pipe of the ship main engine, capillary water and adsorbed water in the metal nodule are effectively evaporated, the water content of the metal nodule is reduced from 80% to about 10%, and meanwhile the ship energy recycling rate is increased.

The present invention relates to the technical field of sludge treatment, specifically to a mechanical cold-pressed sludge deep dehydration and drying device and a drying process, comprising a support frame and a gantry arranged above the support frame, a plurality of dehydration bins are evenly distributed in the circumferential direction of the outer circumference of the support frame, a conveying mechanism for driving the dehydration bins to circumferentially circulate is installed on the support frame, a filter basket is installed inside the dehydration bins at the top, and a pre-dehydration mechanism and a cold-pressed dehydration mechanism located above the support frame are installed on the gantry. The present invention performs multiple extrusion dehydration with gradually increasing pressure on the sludge by setting a cold-pressed dehydration mechanism, and directly acts on the sludge particles by high pressure, so that most of the interstitial water in the wet sludge can be separated from the sludge, and at the same time, high-pressure pressing can destroy the capillary surface tension and cohesion to separate the capillary water, and no chemical agent needs to be added during operation.

The invention discloses a product-controllable plasma generation device and method and application. The device comprises a dielectric barrier discharge structure, and an electrode negative electrode of the dielectric barrier discharge structure is made of a water absorption material; a capillary water pipe is arranged in the negative electrode and connected with a water outlet of a piston cylinder, an upper end piston is installed at an upper end opening of the piston cylinder, a water tank is arranged at the position higher than the maximum limiting height of the upper end piston and annularly surrounds the piston cylinder, and the bottom of the water tank is communicated with the piston cylinder through a pipeline. The water tank is communicated with the atmosphere through an air valve; when the upper-end piston is pressed, the air valve is closed, quantitative water flows into the capillary water pipe and then uniformly permeates into the negative electrode, and the outflow amount of the water is determined by the downward moving distance of the upper-end piston. The device is low in energy consumption, high in efficiency, low in cost, good in heat management capability, capable of accurately controlling generated products, convenient to miniaturize and wide in application prospect.

The present application relates to the technical field of building cooling and energy saving, in particular to a building passive evaporation cooling system based on capillary water transport and interface evaporation, comprising a data acquisition module, a physical state sensing engine, a neural network prediction module, a water supply scheduling module and an execution control module. The physical state sensing engine is used to predict the interface dry time, and the neural network prediction module is used to generate a water content distribution heat map with physical consistency of Richards equation and Fourier heat conduction law. The water supply scheduling module dynamically corrects the water supply time according to the heat map and the dry time, and drives the intermittent water supply of the micro water pump. The present application realizes the deep coupling of physical mechanism and deep learning, solves the problem of imbalance between water supply and heat load matching under complex microclimate, and improves the evaporation cooling efficiency and energy utilization accuracy of the building facade.

The invention discloses a concrete stress monitoring method based on a wet-force coupling effect and a capillary water theory, and the method comprises the steps: measuring the capillary pressure change of pores in concrete through a tensiometer, and calculating the concrete stress according to the wet-force coupling effect and the capillary water theory. The invention relates to the technical field of concrete materials. According to the concrete stress monitoring method based on the wet-force coupling effect and the capillary water theory, real-time monitoring of a structure can be achieved, the cost is low, compared with common strain measurement, the novel stress monitoring method is provided, and the method is based on an early-age concrete wet-force coupling model and the capillary water theory and has the advantages of being high in practicability and easy to popularize. The stress of the concrete structure is monitored by measuring the capillary pressure change of pores in the concrete, and the real-time safety of the structure is ensured.

The invention provides microwave drying equipment and a traffic roadbed dehumidification method, and belongs to the technical field of roadbed water damage renovation, the microwave drying equipment comprises a buried drainage pipe, a microwave unit, a fan unit and a control unit, the buried drainage pipe is provided with a wave feed port and a drainage port and is buried in rock-soil filler, and the microwave unit is connected with the fan unit; the microwave unit is communicated with the wave feeding port or the water discharging port and heats the rock-soil filler around the buried water discharging pipe, the fan unit sucks water from the interior of the buried water discharging pipe to the exterior, and the control unit monitors the temperature and humidity in the rock-soil filler and controls the microwave unit and the fan unit to operate. The traffic roadbed dehumidification method sequentially comprises the following steps: delimiting a roadbed dehumidification range, determining parameters of the buried drainage pipe and arranging the buried drainage pipe, installing the microwave unit, the fan unit and the control unit and operating the microwave unit, the fan unit and the control unit, and dehumidifying the roadbed. The device has the advantages that gravity water in rock and soil filler can be drained, thin film water and capillary water can also be drained, and the technical effect of dehumidifying the traffic roadbed is achieved.

This invention relates to the interdisciplinary field of smart agriculture and smart home technology, specifically a modular and combinable smart home vertical planting system, method, and dedicated substrate. The system includes balcony, terrace, wall-mounted, and ceiling-mounted versions, all with a basic 3cm module. The outer casing is made of 304 stainless steel and wood-plastic composite, while the inner casing is replaceable and features a 10cm water storage layer at the bottom, supplied via capillary water supply through absorbent cotton strips. The inner casing has an embedded RFID tag, supporting finished inner casing delivery and recycling services. The system integrates multi-sensor collaborative intelligent control, including ultraviolet supplemental lighting, ultrasonic + plant essential oil insect repellent, automatic irrigation, temperature control, and ambient lighting. The dedicated cultivation substrate consists of coconut coir, bamboo powder, perlite, organic fertilizer, and probiotics; the atomized liquid contains 1%-5% plant essential oil. This invention achieves zero-knowledge threshold, zero chemical pesticides, water and electricity saving, and recyclable home planting, suitable for commercial scenarios such as businesses, hotels, and restaurants.

This application relates to the field of ecological restoration technology, and discloses a vegetation restoration system for drawdown zones and its construction method. The system includes laying equipment and a roller. A drive motor of the laying equipment drives the winding roller to release a coil. The roller includes a fixing rod, is filled with superabsorbent polymer resin, and is sequentially wound with an inner base mat, a middle matrix containing plant stem nodes and fungal spores, and an outer mesh. The inner base mat is interwoven with capillary water-conducting bundles, the bottom of which is inserted into the fixing rod and embedded in the resin. The outer mesh is secured with gravity lever-type anchoring nails via eccentric hinges. During construction, the motor releases the coil at a uniform speed, causing the roller to unfold along the slope. The anchoring nails, as they rotate, droop under gravity and penetrate the topsoil layer for synchronous anchoring. The fixing rod, remaining at the bottom, lifts water upwards through the absorbent resin and water-conducting bundles. This invention achieves mechanized laying of base mats on steep slopes, constructs a capillary water-lifting system to alleviate drought, and improves vegetation survival rates.

The invention discloses an integrated passive water taking device and system based on MXene interface evaporation and radiation refrigeration. The top cover of the device is arranged in a left-high and right-low mode in the transverse direction. The left side is a heating evaporation area, an MXene heat absorption layer is adopted, and liquid is continuously supplied through a capillary water supply layer to form thin liquid film interface evaporation. A selective radiation cooling film is attached to the outer side / the upper side of the condensation glass plate, high reflection is achieved in the solar spectrum, high emission is achieved in an 8-13-micron atmospheric window, the net radiation cooling capacity is achieved in the daytime, and the temperature of the inner surface of the plate is close to or lower than the environmental dew point so that water vapor can be stably condensed. A steam short-distance transmission channel from left to right is formed below the upper cover, and condensate is rapidly discharged to the flow collecting groove along the hydrophilic flow guide lines and is discharged from the water outlet; the bottom phase change energy storage (PCM) layer suppresses thermal leakage and smoothes irradiation fluctuations. The device realizes a closed loop of left evaporation, right condensation and right drainage under the condition of no external work, has the advantages of stable condensation in the daytime, low heat loss, salt deposition resistance, friendly maintenance and the like, and is suitable for the scenes of seawater desalination, brackish water treatment, solution regeneration and the like.

The invention provides a multi-level collaborative reinforcement method and structure system for a collapsible loess foundation disturbance area. The method comprises the steps that loose soil in the disturbance area is removed; an anti-seepage wall is arranged on the edge of the disturbance area; reinforcing material backfilling and layered tamping are conducted in the disturbance area, and a foundation replacement reinforcing layer is formed; single-foundation foundation pit excavation is conducted on the top of the foundation replacement strengthening layer; a buffer material is laid at the bottom of the single-foundation foundation pit; a single-foundation reinforcement cage is laid in the single-foundation foundation pit, and the single-foundation reinforcement cage and the reserved reinforcements on the existing retaining wall are mutually anchored; and the single-foundation foundation pit is poured through concrete, and a single foundation is formed. An anti-seepage drainage system is formed by matching the anti-seepage wall with the foundation replacement strengthening layer, and the effects of preventing capillary water from rising from the source and guaranteeing smooth drainage are achieved, so that the risk that collapsible loess disintegrates when encountering water is eradicated; the replacement technology of layered backfilling and alternate tamping is adopted for the foundation replacement strengthening layer, and the effect of the high-bearing-capacity and low-compressibility foundation strengthening layer is achieved.

The utility model discloses an automatic water suction flowerpot, include: flowerpot base, the link of the link of the top of the flowerpot base cover and the link of the top of the flowerpot main part of cover, the middle part of cover is the open structure, and the open inner wall is along the boss of own center and forms, the utility model has the following beneficial effect: through the water separation spare of water suction box inside, cooperate the capillary water suction spare in the water suction pipe, realize water separation spare can carry the moisture in the air adsorption, and then separate the moisture, and the moisture collected is slowly transported to the soil and plant root through the capillary water suction spare, solves the water shortage problem of plant because of not timely management, and under the condition that air humidity is not enough, and the water separation spare separates the moisture deficiency, in the flowerpot base can additionally add water, after the capillary water suction spare absorbs water, to the slow mode of supplementing the moisture required by plant, prevents the situation that plant root is soaked in water and can not breathe.

The invention relates to the field of rock and soil testing, and particularly discloses a nuclear magnetic resonance detection method for the pore water state of cohesive soil, which comprises the following steps: optimizing a nuclear magnetic resonance echo parameter acquisition scheme, and adjusting acquisition parameters such as echo interval time (Time Echo) and polarization wait time (Time Wait) and a signal processing strategy; and a low-field nuclear magnetic resonance echo acquisition and partition inversion method for needle bound water, capillary water and gravity water is formed. According to the method, relaxation distribution of bound water, capillary water and gravity water can be effectively separated, the problem of quantitative identification of water in different occurrence states such as gravity water, capillary water and bound water in rock and soil media is solved, the quantitative and qualitative analysis precision is improved, and the method is suitable for the fields of soil, hydrogeology, oil and gas exploration and the like.

The invention provides a planting and breeding dual-purpose farmland construction method based on a high-water-level coal mining subsidence land, and the method comprises the following steps: S1, dividing the high-water-level coal mining subsidence land into a transformation area and a perennial ponding area, the transformation area comprising a non-ponding area and a seasonal ponding area; s2, a first functional area is arranged in the transformation area, and a ground inclination angle adjusting layer, a capillary water blocking layer and a surface soil layer are arranged on the first functional area in a covering mode; s3, a second functional area is arranged on the downhill position of the surface of the first functional area, and the second functional area is used for controlling the phreatic water level corresponding to the first functional area; s4, in the transformation area, a communication water channel is formed in the ground inclination direction, and the communication water channel points to the perennial ponding area and is in communication connection with the perennial ponding area; and S5, a diving wide well is formed in the first functional area and used for drawing diving water. According to the method, the use mode of the subsidence land can be flexibly adjusted, double benefits of cultivation and planting are generated, the method has the advantage of being low in cost, and economic and ecological benefits can be remarkably improved.

The invention relates to the technical field of ecological restoration infiltrating irrigation, in particular to a river beach ecological restoration infiltrating irrigation device, which is characterized in that one part of a capillary water absorption piece extends into an underground water level, and the other part of the capillary water absorption piece is arranged in a water storage space; the power assembly acts on the capillary water absorption piece, and part of saturated water absorbed by the capillary water absorption piece is converted into free water stored in the water storage space through mechanical action. One end of the capillary water delivery part is arranged in the water storage space, and the other end of the capillary water delivery part penetrates out of the water storage space and extends to a plant root system area to be infiltrated; the capillary water absorption part is utilized to actively enrich water from the underground water level, a mechanical action (such as periodic extrusion) is applied to the capillary water absorption part through the power assembly, so that capillary saturated water in the water absorption part is converted into gravity water capable of freely flowing, the gravity water is temporarily stored in the water storage space, and then the gravity water is stored in the water storage space through the capillary water delivery part. And the free water in the water storage space is continuously and slowly conveyed to a plant root zone needing infiltrating irrigation under the capillary action.

The application discloses a passive evaporative cooling and phase change energy storage collaborative composite wall system, and relates to the technical field of building energy saving. The wall comprises, from outside to inside, an outer decorative surface ventilation layer composed of bamboo woven boards with air gaps, an evaporative cooling core layer which is an air cavity layer and is internally provided with a capillary water absorbing fabric core body, the bottom of the core body being immersed in a water tank arranged along the bottom of the wall and being wetted from bottom to top by capillary action, and a phase change cold storage layer arranged on the inner side of the evaporative cooling core layer and closely attached to the evaporative cooling core layer. The application realizes the spatial separation and functional cooperation of "external evaporative heat dissipation" and "internal phase change cold storage" in the dry column building wall. The outer layer evaporative cooling continuously creates low temperature boundary conditions for the inner layer phase change material, the inner layer phase change material keeps solid state cold storage during the whole day and actively solidifies and releases cold at night, thus solving the dilemma of poor night effect of single evaporative cooling wall and easy overheating of single phase change wall during the day.

The invention provides a filtering performance determination method, device and equipment, a medium and a program product, and relates to the technical field of iron ore powder grinding and separation. The method comprises the following steps: obtaining the target molecular water content and the target capillary water content of a target type of iron ore powder sample after wet grinding, and the target water content of a target filter cake obtained by filtering the iron ore powder sample; determining a target moisture index based on the target molecular water content, the target capillary water content and the target moisture content; obtaining the average particle size of target mineral powder obtained by freezing and scattering the target filter cake; determining a target dispersion index based on the average particle size; based on the target moisture index and the target dispersion index, the filtering performance of the iron ore powder of the target type is determined. According to the filtering performance determination method, device and equipment, the medium and the program product provided by the invention, the filtering performance of the iron ore powder can be accurately determined.

The invention relates to a thermodynamics-based soil freezing characteristic curve model considering unequal-diameter particle contact, and the model comprises the following steps: (1) carrying out soil unequal-diameter particle contact calculation to obtain a contact mode of a soil sample; and (2) carrying out water freezing calculation on the soil to obtain freezing points of capillary water and adsorbed water of the soil. And (3) calculating freezing characteristic curves of the soil sample at different temperatures through the soil-water characteristic curve model. On the basis of thermodynamics, according to the similarity of a soil-water characteristic curve and a freezing characteristic curve, the determination effect of a complex particle contact mode of soil on the conversion relation of the soil-water characteristic curve and the freezing characteristic curve is considered, and the capillary effect and the adsorption effect of the soil on water are considered from the angle of the action relation of unequal-diameter particle contact influence specific interface energy; a soil-water characteristic curve model is introduced to deduce and establish a freezing characteristic curve theoretical model. According to the method, multiple influence factors such as particle size, interface energy and void ratio are fully considered, the influence factors are clear, the physical significance is definite, and the method can be used for calculating and predicting the relation between the temperature and the water content of the frozen soil. In addition, the method can also provide theoretical support for analyzing permeability, water and salt migration characteristics, soil shear strength and volume deformation of frozen soil, and provide theoretical reserve for perfecting an engineering numerical calculation model.

The invention provides a self-metering type soil capillary rising height testing device and method based on water pressure sensing. The device comprises an extensible pressure measuring pipe assembly, a water storage tank, a data processor, a soil sample sealing system and a modularized water supply unit. The bottom of the extendable pressure measuring pipe assembly is connected with a water storage tank, a high-sensitivity water pressure sensor is arranged in the water storage tank and used for indirectly and accurately monitoring continuous changes of water column pressure in the pressure measuring pipe, and the upper measuring limit of 3-5 meters of a traditional device is effectively broken through; the high-sensitivity water pressure sensor is in communication connection with the data processor, and the data processor automatically and accurately recognizes a critical inflection point when capillary force and gravity balance are broken by analyzing dynamic characteristics of a water pressure-time curve and calculates the rising height of capillary water according to the critical inflection point. According to the invention, the full-process automation from data acquisition to result interpretation is realized, the inherent limitation of the traditional method on the measurement range and the manual interpretation precision is overcome, and the accuracy, reliability and efficiency of the test are remarkably improved.

The invention discloses a slope inclined drainage support test device, which comprises a transparent model box, a drainage assembly, a monitoring assembly and a control terminal, and is characterized in that bed rock and a slope are arranged in the transparent model box; the drainage assembly comprises a plurality of drainage pipes, a plurality of water guide fiber nets and a plurality of capillary water guide fiber sleeves, the drainage pipes are distributed at intervals in the width direction of the side slope, the water inlet ends of the drainage pipes are buried in the side slope, the pipe walls are provided with a plurality of water seepage parts distributed at intervals in the axial direction, and each water seepage part comprises a plurality of water seepage holes distributed at intervals in the radial direction; the water guide fiber net is arranged in the drainage pipe, and the capillary water guide fiber sleeve is sleeved outside the drainage pipe; the monitoring assembly comprises a visual coordinate grid, a plurality of cameras, a soil pressure sensor, a pore water pressure sensor and a soil moisture sensor, wherein the soil pressure sensor, the pore water pressure sensor and the soil moisture sensor are buried in a slope. The control terminal is electrically connected with the camera, the soil pressure sensor, the pore water pressure sensor and the soil moisture sensor; and continuous and efficient drainage and monitoring of the slope soil body in the whole process from an unsaturated state to a saturated state are realized.

The utility model discloses a roadbed and pavement drainage structure, and particularly relates to the technical field of pavement drainage structures. The roadbed and pavement drainage structure comprises a plain soil layer, a drainage cushion layer is arranged above the plain soil layer, an inorganic binder base layer is arranged above the drainage cushion layer, a water permeable sand layer is arranged above the inorganic binder base layer, a water permeable concrete layer is arranged above the water permeable sand layer, and a water permeable concrete layer is arranged above the water permeable concrete layer. A water seepage asphalt surface layer is arranged on the upper surface of the water seepage concrete layer, side ditches are arranged below the two sides of the water seepage asphalt surface layer, side ditch covers are installed on the upper surfaces of the side ditches, and a plurality of drainage holes are formed in the surfaces of the side ditch covers. The capillary water seepage pipes which are obliquely arranged towards the side ditch direction are arranged in the water permeable sand layer, when water permeates into the pipes along the center water permeable layer of the capillary water seepage pipes, the water can be rapidly discharged into the side ditch along the first water seepage grating under the gravity inclination effect, and therefore the situation that the water accumulation amount of the water permeable sand layer is too large is avoided.

The invention discloses a construction method for erecting one layer of a prestressed hollow slab on the ground, which comprises the following steps of: combining a core structure of an overhead layer, the prestressed hollow slab, a cast-in-place C20 fine aggregate concrete rigid layer, a waterproof layer and a decorative surface layer; and in cooperation with key procedures such as shear wall lifting lug construction, prestressed hollow slab installation, high-strength grouting material filling, rigid layer pouring and waterproof decoration construction, the effects of double moisture prevention, construction process simplification and structural stability improvement are achieved. A capillary water permeation path is thoroughly blocked, layered paving, compaction and detection procedures of traditional plain soil backfilling are omitted, construction limitation on rainy days is avoided, meanwhile, secondary settlement and concrete shrinkage are resisted through a collaborative stress system, the service life of a building ground structure is prolonged, and the construction cost is reduced. The method is suitable for buildings without basement structures, such as multi-storey residences, small commercial buildings and industrial accessory houses, and has remarkable practicability and economical efficiency.

The invention discloses a willow pile fracture monitoring and maintenance system and method for a biological check dam, and the system comprises a willow pile fracture self-excitation sensing module, a precise rooting maintenance module, a drought period synergistic water seepage and storage module and a system platform, the willow pile fracture self-excitation sensing module realizes real-time early warning monitoring and accurate positioning alarm of willow pile fracture, and the accurate rooting maintenance module generates a customized replanting scheme according to willow pile file data issued by the system platform and an adaptive algorithm. And the drought-period synergistic water seepage and storage module is combined with the pre-embedded biodegradable maintenance bag and the capillary water delivery carrier to strengthen the rooting effect and the water supply in the drought period. According to the system, traditional post-repair is upgraded into an intelligent management mode with real-time response, active intervention and continuous guarantee, the technical problems that in willow pile management of an existing biological check dam, breakage alarm is lagged, a complementary planting scheme is extensive, and water supply is insufficient in the drought period are solved, and the structural stability, ecological adaptability and self-maintaining capacity of the biological check dam are remarkably improved.

This invention discloses a negative pressure pumping silo storage process for wet sand. Wet sand with a moisture content ≥13.5% (prepared or separated) is transported to a vertically erected silo for storage. Gravity drainage is achieved using a gravity field. The downward-flowing capillary water, under the influence of the vertical gravity field, rapidly descends to the lower part of the silo. A water-repellent ring is installed at the bottom of the silo, collecting all the downward-flowing capillary water and isolating the accumulated capillary water at the bottom of the silo outside the sand discharge port, separating excess water beyond the bound water of fine sand, ultrafine sand, and tailings. The collected capillary water is then channeled through an air-water mixing pipe to form a capillary water penetration zone. The air-water mixing pipe is connected to a jet negative pressure pumping device via a main pipe for negative pressure pumping, ultimately obtaining qualified sand with capillary water and a moisture content of less than 10%, similar to the naturally bound water content of fine sand, ultrafine sand, and tailings, completely eliminating leakage during transportation.

The present application relates to the technical field of coal mine screening, and specifically discloses a coal mine screening device for coal mining, which comprises a rack, a screening unit, a driving unit and a dredging unit. The dredging unit is arranged between two layers of screen meshes, and the paddle thereof is periodically reciprocatingly rotated under the driving of the driving member to continuously stir the material on the second screen mesh, effectively breaking the arching effect of small coal blocks and ensuring the smoothness of the screening channel. A flow channel and a jet groove are arranged in the rotating shaft and the paddle of the dredging unit, and when the paddle is rotated to the optimal angle perpendicular to the screen mesh, the gas supply member instantaneously sprays a gas flow to the mesh hole, powerfully removing foreign matters and sticky coal sludge stuck in the mesh hole and effectively solving the problem of screen mesh blockage. Meanwhile, the capillary water film formed between the sticky coal sludge and the surface of the screen mesh is broken, the separation and shedding of water are accelerated, the water content of the small coal blocks screened finally is effectively reduced, and the quality of the coal product is effectively improved.

The invention relates to the technical field of ecological sheet piles, in particular to an ecological concrete sheet pile for river landscape bank revetment, which comprises a sheet pile body formed by integrally pouring concrete, a grading vegetation mechanism is arranged on the water facing side of the sheet pile body, and a capillary water replenishing mechanism is arranged in the sheet pile body. Mounting splicing mechanisms are arranged on the two sides of the sheet pile body, a rainwater collecting mechanism is arranged at the lower end of the sheet pile body, the sheet pile body comprises a back plate, and a left side plate and a right side plate are symmetrically arranged on the water facing side of the back plate. According to the invention, the grading vegetation mechanism is arranged, the shallow vegetation cavities and the deep vegetation cavities are matched with each other, appropriate growth environments are respectively provided for drought-enduring terrestrial plants and hygrophilous aquatic plants, and the vegetation distribution rule of a natural river bank is well simulated through accurate partitioning in the vertical direction, so that the vegetation distribution accuracy is improved. The landscape diversity and ecological continuity are remarkably improved, and meanwhile the integral stability of the bank slope is effectively enhanced through the differential anchoring effect of the plant root systems.