277 results about "Soil loss" patented technology

The invention discloses a desert sand-based artificial earthwork lattice sand barrier and a preparation and use method thereof, the artificial earthwork lattice sand barrier comprises the following components in percentage by mass: 93-97% of a coal-sand-ash mixture, 1-10% of an activating agent and 5-15% of externally doped water, and the artificial earthwork lattice sand barrier is prepared by compacting and molding, and the coal-sand-ash mixture accounts for 93-97%, the activating agent accounts for 1-10% and the externally doped water accounts for 5-15%. The desert sand base artificial earthwork grid is horizontally laid in the desert and a water and soil loss area, desert sand stabilization can be achieved, and surface layer floating sand and surface layer sandy soil loss in the water and soil loss area are prevented. Typical coal-fired solid wastes such as the coal ash and the coal slag are used as raw materials for preparing the desert sand-based artificial earthwork grid, collaborative resource utilization of the desert sand, the coal ash and the coal slag is achieved, resource utilization of a large amount of industrial solid wastes is combined with desertification prevention and control engineering, environmental pollution is reduced, and the desertification control cost is reduced.

The invention discloses a device for high-precision soil loss amount monitoring, relates to the technical field of water and soil conservation monitoring, and solves the problems that an existing monitoring method cannot comprehensively and accurately reflect the soil loss amount of a monitoring area, a monitoring point is fixed and cannot be moved and reused, and the accuracy of a monitoring result is low. A device for high-precision soil loss monitoring comprises an integrated controller, a transverse rod, a data acquisition unit, a track system, a power wheel, a transverse support, supporting legs and auxiliary wheels, and the integrated controller integrates a power unit, a power supply unit, an intelligent control module and a data transmission unit. The monitoring device provided by the invention is quick to install, is completely composed of modules, can adapt to the requirements of fields with different sizes and gradients, can realize full-automatic monitoring and remote control monitoring of soil loss amount, can also be used for monitoring slope displacement and geological disasters, and has a monitoring result precision far higher than that of a traditional method.

The invention provides a soil improvement effect evaluation system and method based on soil corrosion prevention, soil moisture conservation and fertility improvement, and relates to the technical field of soil optimization. A soil corrosion prevention index is generated based on a soil loss rate, a soil stability index and a vegetation coverage rate; generating a soil moisture preservation index based on the water holding rate, porosity and evaporation water loss of the soil sample; according to the method, a soil fertility improvement index is generated by measuring the total content of organic matters, nitrogen phosphorus and potassium and the pH value, and further sampling and normalization are carried out on each index in a secondary test area to generate a comprehensive evaluation index, so that scientific quantitative evaluation is carried out on the soil improvement effect, and a decision basis is provided for soil protection and agricultural sustainable development.

The invention provides an ecological reinforcing structure of a river channel grouted rubble retaining wall revetment, the ecological reinforcing structure takes double-row pile foundations and a planting platform as a core design concept, the first pile foundation is located at the foot of an existing grouted rubble retaining wall, the top of the pile foundation is provided with a reinforced concrete guide beam, and the second pile foundation is located at the foot of the existing grouted rubble retaining wall; the newly-built guide beam is connected with an existing grouted rubble retaining wall base into a whole through embedded steel bars, the integrity and the anti-sliding capacity of the retaining wall are remarkably enhanced, and base emptying and wall body deformation are effectively restrained. The second pile foundation structure is a planting pile and backfill soil behind the planting pile to construct an aquatic plant planting platform, geotechnical cloth is laid between the planting pile and the backfill soil, soil particle loss can be prevented, water is allowed to freely permeate, and normal exchange between water and soil is maintained. The stability of an existing retaining wall is guaranteed, an aquatic plant planting platform is constructed, the whole reinforcing system is hidden under the normal water level, the natural form of a river channel is maintained, and deep integration of ecology and safety is achieved.

The invention belongs to the field of sustainable agriculture, and particularly relates to a moisture efficient optimization regulation and control method coupled with black soil cultivated land quality dynamic evaluation. According to the method, the influence of the moisture process on black soil erosion is introduced, and accurate soil loss amount evaluation is realized; in combination with key constraint conditions such as soil erosion and salinization, an optimal calculation method is proposed, the optimal irrigation water amount and irrigation mode are scientifically decided, and the risk of soil degradation is reduced to the maximum extent while it is ensured that the black soil area meets the water demand of crops; the index model (SRI) for quantifying the black soil restoration effect is provided by integrating multi-dimensional key indexes such as soil erosion, salinization, soil nutrients and a soil structure, and the soil health condition and the restoration effect are quantitatively evaluated.

The invention discloses a deep learning-based drainage basin water and soil loss monitoring intelligent early warning method, which comprises the following steps of S1, arranging a sensor array in a sensitive area of a drainage basin to be monitored in advance, and synchronously acquiring rainfall data, surface runoff data, suspended matter concentration data and unmanned aerial vehicle multispectral remote sensing data; s2, inputting the fusion data stream into an improved liquid neural network to generate a state feature data stream; s3, calculating state characteristic trajectory data through a Shenchang differential equation; s4, implementing multi-scale state stability analysis, and identifying an abnormal state inflection point; s5, generating a dynamic risk space mapping map; and S6, determining the risk level of the risk area, and executing corresponding water and soil conservation measures. The water and soil loss risk prediction accuracy and response timeliness are improved, and the method is suitable for river basin ecological environment monitoring and protection.

The invention relates to the technical field of water and soil conservation monitoring, and discloses a water and soil conservation soil loss data monitoring system and method. An area setting module of the system sets a geographic monitoring area by taking a monitoring station as a center, so that accurate delimiting of a monitoring range is realized; the data acquisition module is used for acquiring soil loss related data in a geographical monitoring area, wherein the related data covers multi-dimensional information such as rainfall, soil water content and vegetation coverage. The loss analysis module calculates a loss coefficient and a risk coefficient through the data, and quantitatively presents the soil loss condition; the early warning module generates an early warning instruction according to the loss coefficient and the risk coefficient, and accurately reflects the emergency degree and the risk level of soil loss; and the cloud interaction module establishes a communication channel with a cloud server when the early warning instruction is generated, so that real-time sharing and cooperative processing of data are realized. According to the system, the pertinence, comprehensiveness and timeliness of soil loss monitoring are improved, and powerful support is provided for water and soil conservation work.

The invention relates to the technical field of geotechnical engineering and slope reinforcement, and discloses a foam concrete-based expansive soil slope reinforcement structure which comprises a slope body and a foam concrete prefabricated reinforcement assembly mounted on the slope body through anchor rods, and the reinforcement assembly comprises a first reinforcement layer and a second reinforcement layer which are sequentially arranged on the slope surface of the slope body; the first reinforcing layer comprises a plurality of first reinforcing units arranged in the length direction of the slope body. By means of the double-layer design of the first reinforcing layer and the second reinforcing layer, the first prefabricated slab is longitudinally connected in an inserted mode through a dovetail or T-shaped tenon-and-mortise structure to achieve seamless attachment, the second prefabricated slab presses and covers tenon-and-mortise joints and is clamped and locked through the annular connecting piece, a latticed system of transverse restraining and longitudinal locking is formed, the structure can resist volume expansion of expansive soil by 30% or above, and the expansive soil is not prone to deformation. A soil body loss channel is effectively blocked, and the linkage problem of loosening-cavity-instability of a traditional prefabricated part is solved.

The invention discloses a cultivator with adjustable cultivation width, which relates to the technical field of agricultural cultivation and comprises a cultivator body, a driving wheel mounted at the bottom of the cultivator body and a soil turning mechanism mounted at the rear end of the cultivator body and capable of performing local cultivation operation. The traction rod is installed in front of the soil turning mechanism and used for sensing topographic changes to adjust the local ploughing operation width in a self-adaptive mode, and a soil collecting mechanism is arranged behind the soil turning mechanism and used for collecting and compacting ploughed soil in real time and conveying the soil to the outer side of the belt-shaped rotation belt in sequence to build ridges on site. Local no-tillage is achieved through the asymmetrically-arranged cutters, obstacles can be avoided according to the terrain trend in the ploughing process, the amplitude of a no-tillage area is adjusted in real time, excessive ploughing is avoided, ridges can be built in situ through the soil collecting mechanism in the ploughing process, preliminary effective protection is formed, and soil loss on the surface of a terraced field is avoided; integrated operation of ploughing and ridging is achieved, and the working procedure of terraced field building or farmland arrangement is simplified.

The invention discloses a method for estimating the soil loss amount in a karst region, and the method comprises the steps: determining a negative exponential function relation between a rock exposure rate and the soil loss amount based on field in-situ observation; according to the negative exponential function relation, stony desertification factors used for quantifying the inhibition effect of rock exposure on soil erosion are constructed; introducing the stony desertification factor as a multiplicative factor into an RUSLE model, and establishing an RUSLE-D model; and obtaining each RUSLE factor data and rock exposure rate data of the target area, inputting the RUSLE-D model, and calculating the soil erosion amount of the target area. According to the invention, the accuracy and practicability of model estimation and prediction are improved.

The invention provides a cooperative intelligent early warning method and system for an easily-weathered rock slope, and relates to the technical field of landslide early warning, and the method comprises the steps: obtaining first information, second information and third information; according to the second information, a relation curve of the soil weight, the cohesive force and the internal friction angle changing along with the moisture content is established, a function is fitted, and an accumulation body soil parameter function is obtained; performing slope-accumulation body model construction processing according to the first information and an accumulation body soil body parameter function, and calculating a stability coefficient and a potential instability range of an accumulation body to obtain sample data; constructing an accumulation body water and soil loss prediction model based on a preset neural network model and the sample data; and inputting the third information into the accumulation body water and soil loss prediction model for prediction processing, and dividing threat levels of the accumulation body and performing stability early warning. According to the method, multiple factors such as the landform, the soil parameters and the water and soil loss of the slope are comprehensively considered, so that a more comprehensive and reliable early warning result can be provided.

The invention discloses an application of a CKX gene in regulation and control of an alfalfa root system, which comprises the following steps of: 1, preparing a transgenic body of wild alfalfa, and over-expressing an MtCKX1 gene in the alfalfa to obtain a transgenic plant; the cDNA sequence and the amino acid sequence of the MtCKX1 gene are a sequence 1 and a sequence 2 in a sequence table; 2, comparing the root system of the alfalfa transgenic plant with the root system of a wild type plant, wherein the root system of the alfalfa transgenic plant is larger than that of the wild type plant; the cytokinin content of the transgenic plant is inhibited, and the root system of the transgenic plant is enhanced and enlarged; the cytokinin has a negative regulation effect in the aspect of root system growth of plants, after overexpression of the MtCKX1 gene, the cytokinin is inhibited, the root system of the plants is enhanced and enlarged, and the effects of well fixing soil and preventing soil loss are achieved.

The utility model relates to the technical field of mangrove planting, and discloses a mangrove plant planting device which comprises a baffle used for avoiding soil loss, a positioning seat used for locking the baffle and a connecting assembly used for adjusting the position of the positioning seat. The connecting assembly comprises a center base used for loading and supporting the contained structure, a driving gear rotationally arranged in the center base, a gear shaft rod fixedly installed on the driving gear, and a first rotating rod rotationally arranged on the gear shaft rod, wherein a connecting rod and a driven rack are arranged on the center base in a sliding mode. The end, away from the center base, of the connecting rod and the end, away from the center base, of the driven rack are fixedly connected with the positioning base. According to the mangrove plant planting device, the positioning seats are arranged to limit the positions of the baffles, the multiple baffles form a frame structure, the frame structure is inserted into the mud flat, protection is provided, soil around the saplings is prevented from being lost, the cultivation effect of the saplings is guaranteed, and then the survival rate of planting of the mangrove saplings is increased.

The utility model relates to the technical field of river channel slope protection, and discloses a river channel slope protection structure based on hydraulic and hydro-power engineering design, which comprises a coagulation layer, a plurality of coagulation blocks are fixedly connected to the top of the front side of the coagulation layer, connecting blocks are fixedly connected to the left sides of the coagulation blocks, and connecting grooves are formed in the middles of the right sides in the coagulation blocks. The device comprises a concrete block, the bottom of the concrete block is fixedly connected with a fixing column, a sliding groove is formed in the fixing column, two reinforcing columns are slidably connected into the sliding groove, reinforcing grooves are formed in the close sides of the interiors of the two reinforcing columns, and the close sides of the two reinforcing columns are fixedly connected with two springs. According to the utility model, natural force damages such as water flow scouring, stormy wave invasion and rainwater erosion can be effectively resisted, the river bank soil loss is reduced, the river bank slope form is kept stable, the safe operation of water conservancy and hydropower engineering facilities is ensured, and the service life of the water conservancy and hydropower engineering facilities is prolonged.

The invention discloses an intelligent automatic irrigation device for a side slope, and relates to the technical field of side slope irrigation. Comprising an irrigation mounting part; a row of irrigation mounting pieces are arranged, the structures on the row of irrigation mounting pieces are the same, drip irrigation devices are mounted on the row of irrigation mounting pieces respectively, and the drip irrigation devices are used for slope drip irrigation water replenishing; a waterlogging prevention part is mounted at the top of the drip irrigation device; an accumulated water protection piece is mounted on the irrigation mounting piece; the accumulated water protection piece is used for preventing excessive drip irrigation; the water level condition of an area above the soil can be detected by adopting the siltation protection piece, and control prompt can be automatically carried out when soil loss and siltation occur; the problems that an existing slope intelligent automatic irrigation device is inconvenient to automatically control runoff prevention and water cut-off, and soil loss is inconvenient to automatically control insurance prompt are solved.

The present invention relates to the field of slope retaining structures, and discloses a new type of anti-skid retaining structure for slopes, comprising a plurality of retaining structure bodies installed in a slope body, wherein the retaining structure bodies are arranged equidistantly along the surface of the slope body, and when water flows through the retaining structure body, a portion of the water flow will flow downward along the surface of the retaining plate, and the other portion of the water flow will enter the drainage component through the flow channel. This water flow diversion design prevents the water flow from directly scouring the soil on the surface of the slope body, but is guided to the drainage component for orderly discharge, thereby avoiding the situation where a large amount of soil is washed away. When the water flow passes through the guide plate, it can gradually slow down along the drainage trough 2 and flow toward the support plate in an orderly manner, and further guide the water flow on the support plate, and finally guide the water flow safely to the bottom of the slope body, thereby effectively preventing the water flow from scouring the soil on the surface of the slope body, and solving the problem of soil loss during heavy rain.

The present invention relates to a slope drainage system and method for a group of inclined water diversion holes with reduced pressure and surface interception, which includes the following steps: anchor construction, assembly scaffolding installation, inclined water diversion hole construction, prefabricated and assembled ecological drainage ditch construction, grass-planted ecological drainage ditch construction, and buried drainage ditch construction. The beneficial effects of the present invention are: using prefabricated and assembled ecological drainage ditches, trench excavation and grass-planted ecological drainage ditches, and buried drainage ditches to form a surface interception drainage + longitudinal and transverse drainage system, effectively preventing secondary damage to the treatment area by surface water and soil erosion caused by disorderly discharge of atmospheric precipitation; drilling an inclined water diversion hole group in the slope, installing a drainage pipe in the hole, and wrapping the outer wall of the drainage pipe with geotextile to prevent clogging, effectively reducing the water pressure in the slope and diverting the groundwater out, gathering it in the buried drainage ditch, and discharging it uniformly, solving the problem of long-term groundwater infiltration and slope damage in landslide treatment areas, anchor net spraying treatment areas, etc.

The invention discloses a short-distance and long-distance coupled soil conservation priority protection area identification method and system, and relates to the technical field of ecological environment assessment, and the method comprises the steps: determining a soil conservation typicality region assessment range, and obtaining natural, economic and remote sensing data of a region assessment year; calculating the potential erosion amount and the actual erosion amount of the soil through the soil loss model and the obtained data, and constructing a soil conservation service supply map; in combination with soil conservation service supply, a soil conservation service short-range importance evaluation map and a soil conservation service remote importance evaluation map are constructed, comprehensive soil conservation service importance evaluation is calculated, and a hotspot area of soil conservation comprehensive importance is identified by using hotspot analysis to serve as a soil conservation priority area. According to the method, comprehensive soil conservation service importance evaluation is calculated, the identified soil conservation service importance hot spot region is used as a priority protection region, and the two aspects of soil conservation service supply and demand are integrated, so that regional soil utilization and protection are better coordinated.

The utility model discloses a slope protection structure for soil and water conservation, comprising a plurality of slope protection bricks distributed in a rectangular array, wherein every two adjacent slope protection bricks are engaged with each other, and the slope protection bricks comprise rectangular bricks, wherein the top surface of the rectangular bricks is penetrated with four planting holes, and two opposite side walls of the rectangular bricks are integrally formed with protrusions, and the other two opposite side walls of the rectangular bricks are provided with grooves; in the utility model, since the cooperation between the protrusions and the grooves will not interfere with the movement of the rectangular bricks in the thickness direction, it is convenient to replace the damaged rectangular bricks separately, and in heavy rain, the U-shaped guide grooves and X-shaped guide grooves on the surfaces of the rectangular bricks can effectively guide rainwater to avoid rainwater flowing into the planting holes along the upper surfaces of the rectangular bricks, thereby effectively reducing the scouring of the soil in the planting holes, so as to effectively reduce the loss of soil, and the use effect is good.

The utility model discloses a roof drain, and relates to the technical field of building drainage. The rainwater hopper comprises a water permeable hopper body and a top cover installed on the water permeable hopper body, water permeable holes are evenly distributed in the peripheral side of the water permeable hopper body, and the water permeable holes in the lower section of the water permeable hopper body incline upwards from outside to inside so as to effectively prevent soil loss.

The present invention discloses a foundation pit dewatering device and method, including a dewatering foundation pit. A first mounting seat is fixedly attached to the bottom of the foundation pit by bolts. A cross beam is screwed and attached to the surface of the first mounting seat. A first support plate is fixedly attached to the surface of the cross beam by bolts. Support beams are symmetrically arranged along the length direction on the side surface of the cross beam. One end of the support beam away from the cross beam is open. A telescopic beam is arranged inside the support beam. A driving assembly for driving the telescopic beam to expand and contract is installed inside the support beam, and a second support plate is fixedly attached to the outside of the telescopic beam through the opening of the support beam. Beneficial effects: The distance between the first support plate and the second support plate can be adjusted according to the needs of the foundation pit to meet the requirements of foundation pit support and reduce the soil loss on the inner wall of the foundation pit during dewatering operations. In addition, a filtering assembly is provided between the first mounting seat and the second mounting seat, which can enable the water at the inner wall of the foundation pit to slowly flow to the extraction area through the water holes, and at the same time block the flow of soil impurities.

The application discloses a soft soil foundation embankment structure, which comprises a road surface, a soft soil layer is laid at the bottom of the road surface, a first inserted pile is connected below the road surface and inserted into the soft soil layer, a water-facing slope is arranged on the side of the soft soil layer close to a water body, a wire mesh surface is arranged between the water-facing slope and the soft soil layer, the first inserted pile is arranged below the road surface, and the first inserted pile and a curved pile are in sliding connection, one end of the curved pile is deeply inserted into the soil until reaching a hard soil layer, and the other end of the curved pile is distributed in the soft soil layer, the soft soil layer has a greater flowability than the hard soil layer, the curved pile can autonomously bend and reversely push the second inserted pile, the water-facing slope can be supported after soil loss, the area subjected to continuous impact and collapse under the action of water flow is avoided, the continuous concave collapse trend of the soil loss area is greatly slowed down, and the safety of the whole embankment is effectively improved.

The utility model relates to the technical field of agricultural greenhouse planting, and discloses an agricultural greenhouse water and fertilizer recycling mechanism which comprises a first water and fertilizer recycling pool and a water and fertilizer box, the outer wall of the first water and fertilizer recycling pool is provided with a splicing clamping groove, and the outer wall of the first water and fertilizer recycling pool is fixedly connected with a splicing clamping piece. According to the agricultural greenhouse water and fertilizer recycling device, through the first water and fertilizer recycling pool, the second water and fertilizer recycling pool and the cultivation assembly, the splicing clamping piece of the first water and fertilizer recycling pool and the splicing clamping groove of the second water and fertilizer recycling pool are combined to meet the space planting water and fertilizer recycling requirements of different agricultural greenhouses, and meanwhile the cultivation assembly can be flexibly installed in the assembly frame; by means of a second filter screen and a seepage filter material, soil loss is effectively prevented when the cultivation box is subjected to water and fertilizer irrigation, and in addition, redundant water and fertilizer during spraying irrigation can be smoothly discharged and recycled through a first filter screen at the bottom of the cultivation box and water and fertilizer recycling through grooves in a second water and fertilizer recycling pool and a first water and fertilizer recycling pool.

Systems and methods for monitoring soiling of one or more photovoltaic (PV) modules. A sensor is provided that includes a measure chamber and a clean chamber. Cells in the measure chamber allow a measurement to be taken that accounts for soiling. Reference cells in the clean chamber can be exposed to incident light outside of the clean chamber. Measurements taken when the reference cells are outside of the clean chamber allow a clean output to be determined that is not subject to soiling. Comparing the output of the reference cell and the cells in the measure chamber allows a soiling loss to be determined.

The invention discloses an ecological function evaluation method and system, a medium and equipment, and relates to the technical field of ecological system health evaluation, and the method comprises the steps: integrating the obtained remote sensing data, meteorological data and ground monitoring data of a to-be-detected region, and generating long-time-sequence ecological hydrological data; inputting the long-time-sequence ecological hydrological data into a pre-trained wind erosion amount estimation model, determining a wind erosion amount, determining a wind erosion risk index based on the wind erosion amount, determining an environmental effect index based on a corrected soil loss model RUSLE, and determining a hydrological effect index by adopting a runoff rainfall difference method; the method comprises the following steps: introducing an auto-encoder neural network, carrying out feature dimension reduction processing on a wind erosion risk index, an environmental effect index and a hydrological effect index to obtain dimension-reduced data, and carrying out clustering analysis on the dimension-reduced data based on a clustering algorithm to obtain a risk level classification result.

The utility model is applicable to the technical field of ecological slope protection retaining walls, and provides an ecological slope protection retaining wall for mine pit restoration, which comprises a ground and a vertical slope, a plurality of fixing rods are arranged between the ground and the vertical slope at intervals, two ends of each fixing rod are provided with threaded heads, the threaded heads are inserted into the ground or the vertical slope, and the threaded heads are connected with the ground or the vertical slope. Two transverse rods are arranged between every two adjacent fixing rods at intervals, the transverse rods and the fixing rods form a net-shaped fixing assembly, and the space between the transverse rods and the fixing rods is filled with soil. Preferably, connecting rods are hinged to the portions, located on the two sides of the threaded head, of the fixing rod, fixing blocks are arranged at the free ends of the connecting rods, and the fixing blocks are fixed to the ground or the vertical slope through expansion bolts. According to the scheme, the net-shaped fixing assemblies are formed through mutual cooperation of the fixing rods, the transverse rods, the vertical rods, the inclined rods and the like, auxiliary reinforcement is conducted on the slope protection retaining wall, soil loss and potential safety hazards are avoided, and vegetation planting and maintenance are facilitated.

The present invention relates to a fugitive dust inhibitor and an application method thereof, the fugitive dust inhibitor being capable of: inhibiting the generation of fugitive dust; preventing soil loss in an area to be treated when applied to soil, while aso having excellent biodegradability; inhibiting falling over when applied to an inclined surface; storing moisture when it rains; and improving the fertility of soil.

The invention discloses a soil screening and impurity removing device for medicine mud. The soil screening and impurity removing device comprises a supporting frame, a screening part for screening soil is fixedly connected to the supporting frame, a collecting part for collecting impurities left in the screening part is arranged in the screening part, and a driving part for driving the collecting part to rotate and move is arranged on the screening part; impurities are collected during rotation through a collecting barrel and a stirring plate of the collecting part, the stirring plate turns over the impurities to enable the adhered fine soil to be separated, the impurities are screened out through a second screening hole and a third screening hole, when the collecting part moves to an AB area of the screening part along with the driving part, the impurities fall onto a flow guide plate through a large discharging hole, and therefore the impurities are removed. And residual soil particles in the impurities are further screened through fourth screening holes of the screening part, fine soil enters a discharging box to be discharged, large impurities are directionally discharged from a discharging groove along the inclined surface of a flow guide plate, accurate separation of the impurities and the soil is achieved through the collaborative design, the soil loss rate is reduced, and the impurity collecting process is simplified.

The invention relates to the technical field of water conservancy projects, and particularly discloses a method for calculating the void scale caused by soil loss under a pump station bottom plate and electronic equipment, and the method comprises the steps: determining the maximum water head difference of two sides of a pump station, the soil particle density and the total length of the pump station bottom plate, and estimating the diameter of a gap channel; and carrying out stress analysis on the microcosmic soil particle units on the side wall of the gap channel, wherein the stress comprises effective gravity, drag force, seepage force, lifting force, cohesive force, supporting force, sliding friction force and rolling friction moment. According to the method for calculating the void scale caused by soil loss under the pump station bottom plate, a particle kinetic method is introduced, gap channel water flow under the bottom plate is regarded as pressure pipe flow, particle stress analysis, a sliding / rolling instability mode and a Kolbolok-White formula of a turbulent flow hydraulic transition area are comprehensively considered, and the void scale caused by soil loss under the pump station bottom plate is calculated. The length of the void development channel can be quickly calculated based on engineering parameters, and the void position and the risk range can be determined.

The invention discloses a soil loss calculation method considering soil flux of tillage migration, comprising: measuring soil background magnetic intensity values ​​for sloping cultivated land with different slopes, adding magnetic tracers to the sloping cultivated land; carrying out conventional tillage and protective tillage measures on the sloping cultivated land with the same slope, recording the index affecting the displacement degree of cultivated soil in each tillage activity and collecting soil samples of conventional tillage and protective tillage measures, obtaining the corresponding soil magnetic susceptibility based on the magnetic tracer of the soil sample; obtaining a correction coefficient based on the soil background magnetic intensity value, the index affecting the displacement degree of cultivated soil and the soil magnetic susceptibility; correcting the universal soil loss equation based on the correction coefficient to obtain a corrected soil loss equation, and calculating the soil loss amount based on the corrected soil loss equation. The method takes into account the influence of tillage activities on soil erosion, improves the accuracy of calculating the soil loss amount by the RUSLE model, and at the same time, the experimental operation cycle is short and has strong operability.