75 results about "Loess plateau" patented technology

The invention belongs to the technical field of mine goaf filling materials, and particularly discloses flow-state solidified loess for coal mine filling and a preparation method and application of the flow-state solidified loess. According to the method, rich loess resources in the loess plateau area are used for preparing the flow-state solidified loess for coal mine filling, the coal mine recovery rate can be increased, the filling material cost is reduced, the problem that stones in the loess plateau area are insufficient is solved, the toughness and dry shrinkage resistance of the solidified flow-state solidified loess can be improved, and the problem that the loess is soft and swelled when meeting water is effectively solved. The curing agent for the fluid-state cured loess is developed according to the characteristics of loess of loess plateau and the characteristics of early strength, fluidity, pumpability, crack resistance and the like required by filling of the fluid-state cured loess, the alkali excitation mechanism, the pozzolanic effect, the secondary hydration reaction and other mechanisms are utilized, and proper functional components such as early strength, water retention and crack resistance are compounded, so that the curing agent for the fluid-state cured loess is prepared. The curing agent can effectively solve the common problems of air shrinkage, easy cracking, low strength and the like when a commercially available curing agent is used for preparing flow-state cured loess.

The invention discloses a device and method for simulating the freezing and thawing cycle process of collapsible loess in the natural environment, and belongs to the technical field of geotechnical engineering.The device comprises a test box provided with a sample groove, a rainfall simulation system is arranged on the upper portion in the test box, an underground water seepage simulation system is arranged on the lower portion in the test box, and the sample groove is connected with a loading system; a weighing system is arranged at the bottom in the test box, the weighing system is connected with an underground water seepage simulation system, a settlement and internal damage monitoring system is arranged between the weighing system and the rainfall simulation system, and a freezing and thawing circulation system is arranged on the inner side wall of the test box. According to the invention, the natural environment of the loess plateau area can be simulated, and the strength change of the strong salinized soil in the dry-wet process can be tested and researched under the combined action of various factors such as rainfall, load, underground water seepage and freeze-thaw cycle.

The invention provides an intelligent construction method for a water conservation forest project in a loess plateau area, and relates to the field of forestry ecological restoration and water and soil conservation projects. The method comprises the following steps: collecting and carrying out normalization processing on various original physical quantities based on a space-time sliding window to obtain normalized values of the various physical quantities; constructing a composite physical state function based on the normalized values of various physical quantities, introducing a disturbance propagation response function to construct a measurement evaluation function, and performing spatial threshold screening processing based on the measurement evaluation function to generate a planting candidate point set; generating a spatial aggregation planting block set based on the planting candidate point set; and determining planting parameters based on the gradient change condition of the measurement evaluation function in the spatial aggregation planting block so as to execute planting operation. The problems that a traditional water conservation forest engineering construction method lacks modeling of spatial disturbance and neighborhood consistency, construction parameter configuration lacks intelligent adjustment, and a measurement-analysis-decision-execution closed loop structure is not formed in the whole process are solved.

The invention relates to a rock migration monitoring point extraction method under loess plateau terrain, and belongs to the technical field of unmanned aerial vehicle measurement. The method for extracting the rock migration monitoring points under the loess plateau terrain comprises the following steps that a first target is arranged in a measurement area, and the first target and the rock migration monitoring points are correspondingly arranged; obtaining point cloud data of a plurality of first targets by utilizing mutual cooperation of a laser radar system and the first targets so as to form an original data set C1; performing primary processing on the original data set C1 to form an intermediate data set C2; fitting the point cloud data of the intermediate data set C2 by adopting a least square method to obtain a space plane M; calculating the distance from each point cloud data in the intermediate data set C2 to the space plane M, removing the point cloud data of which the distance from the point cloud data to the space plane M exceeds an error range from the intermediate data set C2, and forming a final data set C21 by the residual point cloud data in the intermediate data set C2; performing clustering analysis on the final data set C21 to obtain edge points of the final data set C21, and fitting the edge points to obtain a space sphere S with the maximum diameter; and acquiring the center of the space sphere, namely the center of the first target, according to the space plane M and the space sphere S.

The present invention relates to the field of carbon fixation technology, and specifically discloses a method for improving the carbon fixation capacity of abandoned land soil in the Loess Plateau, including the preparation of a carbon fixer and the adjustment of a plant community structure; the carbon fixer is prepared from biochar, straw fragments and a composite bacterial agent according to a dosage ratio of 4-6g:2-3g:6-10mL; the composite bacterial agent is mixed with Brevibacillus nitrificans vv6, Nitrobacter vermiformis XY-01, spontaneous nitrogen-fixing bacteria MBC5 and Bradyrhizobium Qian2 according to a volume ratio of 1:1:2-3:2-4; the plant community structure adjustment includes reseeding rural potato and grass plants to reduce the number of dominant species of Asteraceae plants. The present invention can significantly improve the carbon fixation capacity of abandoned land soil in the Loess Plateau by applying a carbon fixer and optimizing the composition of the plant community, which has important practical significance for the construction of a carbon fixation and sink-enhancing vegetation restoration ecosystem, and helps ecologically fragile areas achieve the "dual carbon" goal.

The invention provides a method for planting spring corn in a dry sloping field, and belongs to the technical field of agriculture. According to the technical system, through a three-level combination scheme of structural water storage, process regulation and control and systematic rotation, the transformation of dry-farming corn production from passive drought resistance to active water transfer is realized. Compared with a traditional mode, ineffective rainfall is converted into water available for root systems through deep scarification water storage and furrow rainwater collection; the resource waste is reduced by dynamic supplementary irrigation and slow-release fertilization, and a'small-amount and multiple-time 'supply rule of the semi-arid region is met; the crop rotation system remarkably improves the system stability through leguminous crop nitrogen fixation and corn high-light-effect complementation. According to the embodiment of the invention, the technical system provided by the invention realizes the breakthrough of 689.36 kg / mu of spring corn yield and 2.38 kg / m < 3 > of water utilization efficiency in the loess plateau semi-arid region, and provides a reproducible technical normal form for the arid region with annual rainfall of 400-500mm.

The invention discloses a loess high fill compaction degree nondestructive detection method, relates to the technical field of civil engineering and geological detection, and is used for solving the problems that the detection precision is insufficient, the adaptability to loess characteristics is poor, and the requirement of loess compaction degree nondestructive evaluation cannot be met. An earth surface electromagnetic wave reflection signal and soil particle vibration frequency data are collected to analyze a compaction degree deviation index, when the deviation index is higher than a judgment threshold value, a spectrum analysis algorithm is adopted to calculate compaction degree spectrum characteristics of different depths and positions, and if the spectrum characteristics are consistent, soil particle distribution characteristics and humidity change frequencies are further collected; the compaction uniformity is comprehensively analyzed, the compaction non-uniformity rate is calculated when the uniformity is low, a proper detection algorithm is selected according to the compaction non-uniformity rate to judge whether the compaction non-uniformity problem exists or not, the calculation complexity is reduced, and the judgment accuracy is improved.

The invention relates to the technical field of soil science, and discloses a loess plateau special soil-based mine ecological restoration modifier which is prepared by the following steps: mixing a biological material and an inorganic material to form a biological-physical compound; inoculating specific microorganisms which are subjected to multi-layer packaging into the compound; organic matters and inorganic matters are fixed by utilizing a cross-linked polymer network to form a multi-layer structure; performing intelligent responsive coating treatment on the modifier particles; the prepared modifier is subjected to laboratory and field tests to verify the adaptability and effect of the modifier, and the biological-physical compound is prepared by mixing a local organic material with a certain water content with nano-modified bentonite according to a mixing ratio of 3: 1. By integrating the functionalized nanoparticles, a microbial packaging technology and an intelligent responsive coating, the soil water-retaining property, the nutrient utilization rate and the biological diversity are improved. The design ensures the stability and the lasting effect in an extreme environment, and meanwhile, continuous and efficient ecological restoration is realized.

The invention discloses a U-Net loess plateau terrace boundary refined extraction method fusing terrain gradient constraints. The method comprises the steps of obtaining and preprocessing a remote sensing image, a DEM and meteorological data; extracting terrain gradient and texture morphological characteristics, and generating environment state codes; calculating feature weights based on environment states, and fusing to form a feature set; generating a region priori image and a region division mask by using DEM and environment coding; inputting the fusion features into a U-Net network, and enhancing boundary features through an attention guidance mechanism; and carrying out boundary regularization by utilizing slope direction consistency constraint, and outputting a terrace boundary. The problem of terrace boundary confusion under the loess plateau complex terrain condition is effectively solved, and the boundary precision and the environmental adaptability are improved.

This application discloses a method for extracting and calculating the gully area of loess plateau, which includes: obtaining remote sensing images of sample regions by a remote sensing satellite, analyzing the remote sensing images to obtain a digital elevation model, determine the primary gully area and secondary gully area of the sample region, determining a reference ratio, obtaining the primary gully area and the research region area of the census region, determining the secondary gully area of the census region, storing the secondary gully area of the census region in the storage unit, determining the secondary gully area of the research region. This method can accurately extract a large scale gully area of the loess plateau without a lot of manual labor.

The present application relates to geological exploration technical field, disclose a kind of thick loess plateau area coalfield 3D seismic exploration method, comprising the following steps: S101, artificial seismic source shooting record and superficial Rayleigh wave detector data are collected;S102, grid division is carried out to target area, and set to be inverted parameter;S103, vertical ray path time estimation, multilayer medium dispersion forward and poststack energy estimation are carried out;S104, according to first wave arrival time observation value, Rayleigh wave observation dispersion curve, theoretical ray path time, phase velocity and poststack energy generates multi-target error function;S105, target area is divided into three subdomains, differential evolution iteration is carried out, until local convergence;S106, establish a plurality of parallel annealing chain, set chain temperature and gradually decrease by chain, optimize to be inverted parameter, output optimal to be inverted parameter;S107, the static correction time difference and absorption compensation coefficient of each acquisition point are calculated.The present application improves coal seam structure imaging precision and exploration data reliability under complex surface conditions.

The present invention provides an intelligent construction method for water conservation and forestry projects in the Loess Plateau region, which relates to the fields of forestry ecological restoration and water and soil conservation projects. The content includes: collecting and normalizing various original physical quantities based on a time-space sliding window to obtain normalized values of various physical quantities; constructing a composite physical state function based on the normalized values of various physical quantities, and introducing a disturbance propagation response function to construct a measurement evaluation function, performing spatial threshold screening processing based on the measurement evaluation function to generate a set of planting candidate points; generating a set of spatially aggregated planting blocks based on the set of planting candidate points; determining planting parameters based on the gradient change of the measurement evaluation function in the spatially aggregated planting blocks, and thus executing the planting operation. This method solves the problems of traditional water conservation and forestry project construction methods, such as the lack of modeling of spatial disturbances and neighborhood consistency, the lack of intelligent adjustment of construction parameter configuration, and the failure of the overall process to form a closed-loop structure of measurement-analysis-decision-execution.

The invention discloses a construction method of a loess tableland gradual change type layered surface layer model, and belongs to the field of geological exploration, and the method comprises the following steps: firstly, obtaining loess layer thickness and physical property parameter vertical function of a loess layer survey point, and speed, density, quality factor and other data of a high-speed layer; dividing the loess layer into horizontal thin layers according to the obtained data, establishing a horizontal layered geometric model according to the horizontal thin layers and the high-speed layer, and determining the speed, density and quality factor of each horizontal thin layer of the geometric model according to the obtained vertical function and the speed, density and quality factor of the high-speed layer; the model constructed by the method can reflect the overall characteristics of the loess tableland, and the model can be used for carrying out simulation research on the loess tableland.

The invention discloses a loess plateau slope water and soil conservation device and method, and belongs to the technical field of water and soil conservation and intelligent control crossing. The pile foundation type executing mechanism comprises a spiral ground pile fixed in a side slope soil body, a rotary base installed on the spiral ground pile to achieve horizontal rotation, a pitching swing arm hinged to the rotary base to achieve pitching motion and a spraying guide pipe fixed to the pitching swing arm. The integrated sensing probe comprises a probe rod body, a plurality of layers of moisture content sensors which are arranged in a layered manner along the length direction of the probe rod body, and a miniature rain gauge which is mounted at the top end of the probe rod body; and the central controller is in communication connection with the integrated sensing probe and the pile foundation type execution mechanism and is used for receiving sensing data and sending a control instruction, and the simulation precision of the model on a real physical process is improved.

The utility model relates to the technical field of ecological restoration, in particular to a loess plateau hilly area slope ecological restoration auxiliary device which comprises a slope, a water collecting groove is formed in the slope, a plurality of evenly-distributed water storage pits are formed in the side, with the lower gradient, of the water collecting groove, and overflow grooves are formed between the water collecting groove and the water storage pits. The upper end face of the root seedling planting area is provided with a plurality of enclosures, rainwater resources are utilized, the ecological and irrigation problems of the slope of the loess plateau hilly area are well solved, the upper end face of the root seedling planting area is provided with the enclosures, the enclosures are metal filter screens, therefore, redundant runoff water on the slope can be buffered, vegetation is prevented from being scoured, and the slope of the loess plateau hilly area is protected. The fixed fence is inserted into the soil of the slope surface, so that fixation is facilitated, water and soil are effectively kept, the soil is prevented from being scoured by rainfall, the ecological environment is improved, and good economic, ecological and social benefits are achieved.

The invention relates to the technical field of water conservancy and hydropower and geotechnical engineering, and particularly discloses a silt solidification silt dam structure based on composite reinforcement and a damming method.The silt dam structure comprises a silt dam body formed by artificial aggregate layered filling formed by solidified silt crushing and screening; the geomembrane, the geogrid, the geobag, the ecological bag and the inverted filter drainage layer are arranged in a composite mode. The damming method comprises the steps that reservoir dredged sludge and an industrial solid waste curing agent are mixed, cured, crushed and screened into artificial aggregate; artificial aggregates are filled in a layered mode, geogrids are laid synchronously, the geogrids are used for reversely wrapping and fixing the soil bags of the downstream slope, and meanwhile ecological bags are laid; and finally, geomembranes are laid to complete seepage prevention and slope protection. According to the dam body, efficient resource utilization of desilting silt is achieved, the stability, seepage-proofing performance and ecological adaptability of the dam body are remarkably improved through the composite reinforcement and ecological protection technology, and the dam body is particularly suitable for loess plateau areas.

The application discloses a method for extracting and calculating gully area of the loess plateau, comprising the following steps: obtaining a digital elevation model of a sample area; determining a first gully area and a second gully area of the sample area according to the digital elevation model; determining a reference ratio according to the first gully area and the second gully area; obtaining a first gully area of a general survey area and a research area; determining a second gully area of the general survey area according to the reference ratio and the first gully area of the general survey area; and determining a second gully area of the research area according to the second gully area of the general survey area and the research area. The method can accurately extract the gully area of the loess plateau in a large range of research area, without a large amount of manual labor, and provides accurate and reliable data support for the research of the loess plateau.

The invention provides a loess plateau hilly and gully region small watershed ecological function zoning treatment method and device, and the method comprises the steps: calculating an ecological system health index of a target region based on an ecological system health index model; according to the ecosystem health index of the target area and the human footprint index of the target area, standard scores of the ecosystem health index and the human footprint index are calculated respectively; according to the standardized ecological system health index of the target region and the standardized human footprint index of the target region, determining the coupling coordination degree of the two; introducing the standard score of the ecological system health index and the standard score of the human footprint index into a four-quadrant model, and determining four-quadrant partitions of the target region; and based on the coupling coordination degree and the four-quadrant partition, determining the ecological characteristic regions to which the target regions belong, so as to carry out partition treatment. According to the method, the sustainability of the regional landscape can be scientifically improved, and benign interaction between people and a natural system is promoted.

The invention provides a well control chromatography static correction method and system for a loess highland and a medium, and belongs to the field of oil and gas geophysical exploration. The method comprises the following steps: step 100, inputting seismic data; step 200, performing tomographic static correction processing on the seismic data to obtain a tomographic static correction value; step 300, acquiring a well-to-seismic error value of the whole area; step 400, applying the well-to-seismic error value of the whole area to the chromatography static correction value to obtain a new chromatography static correction value; step 500, performing inversion according to the new tomography static correction value to obtain a new near-surface velocity model; and step 600, adopting the new near-surface velocity model to calculate and obtain a new static correction value. According to the method, the seismic condition, the current collection situation and the chromatography inversion characteristics of the loess highland are comprehensively considered, the stratified data of the well are utilized to calibrate, constrain and correct the static correction value error caused after chromatography static correction, finally, the well seismic error is reduced, and reasonable seismic structure imaging is ensured.

This invention discloses a method, apparatus, equipment, and storage medium for near-surface modeling in the Loess Plateau region, belonging to the field of geophysical exploration technology. The method includes calculating the shallow surface velocity field, calculating the weathered layer velocity obtained from tomographic inversion, calculating the weighting coefficients for correcting the weathered layer velocity, smoothing, calculating the weathered layer velocity, calculating the weathered layer thickness, and calculating the elevation of the high-velocity top interface, smoothing again, and obtaining the final constructed near-surface model. This method does not rely on excessive ultra-deep micro-logging, and can obtain a high-precision near-surface model while reducing exploration investment and saving costs, providing high-quality basic data for subsequent static correction and pre-stack depth migration processing.

The present invention discloses a soil and water conservation spraying device for ecological restoration of the Loess Plateau, which relates to the technical field of ecological restoration. It includes a fixed seat assembled on a transportation tool. A rotating mechanism is rotatably connected to the fixed seat. A guiding and telescopic mechanism is rotatably connected to the rotating mechanism. A spraying mechanism is slidably connected to the guiding and telescopic mechanism. The guiding and telescopic mechanism is used to provide a track for the spraying mechanism to facilitate the spraying operation of the spraying mechanism. A spraying machine is fixedly connected to the position of the fixed seat close to the rotating mechanism. The spraying machine is connected to the spraying mechanism through a pipeline. By setting the guiding and telescopic mechanism in the present invention, when it extends, the side positions of each telescopic member are the same, and a longer track can be laid, thereby increasing the spraying operation range of the spraying mechanism. At the same time, the space occupied when it retracts is smaller.

This invention provides a method and apparatus for evaluating the suitability of dammed land for supplementary cultivated land in the Loess Plateau. The method includes: constructing an evaluation index system for the suitability of dammed land for supplementary cultivated land; collecting multi-source data related to the evaluation index system to obtain various evaluation indicators, and standardizing the data for each indicator; the multi-source data includes a geographic information spatial dataset within the target area; calculating the weight coefficients of the evaluation indicators using a combined weighting method that integrates CRITIC and entropy weights; calculating the compromise ranking index for each dammed land to be evaluated within the target area using a compromise ranking method based on the standardized values ​​and weight coefficients of each evaluation indicator; and ranking all dammed lands to be evaluated within the target area in ascending order according to the compromise ranking index, with the ranking result serving as the order for determining the implementation of dammed land inclusion for supplementary cultivated land balance. This invention enables a comprehensive and systematic assessment of the suitability of dammed land for supplementary cultivated land.

The invention discloses a loess plateau power grid facility coupling meteorological disaster risk dynamic assessment method and system. The method comprises the steps of obtaining static parameters, gridding meteorological forecast data and geographical geological data of primary equipment of a power grid in a target area; based on the static parameters, the gridded weather forecast data and the geographic and geological data, combining a pre-constructed risk assessment index model to obtain various risk indexes of the target equipment in the prediction time period; and determining the comprehensive risk level of the equipment by adopting a weighted fusion or most dangerous principle based on each risk index, and generating a risk distribution diagram and early warning information. The adaptive power grid equipment risk assessment method is constructed according to the meteorological geology characteristics of the loess plateau region, the problem of water and soil disability of a general model is solved, main meteorological disasters are comprehensively covered through five indexes, and the assessment result is more comprehensive and accurate; on the basis of weather forecast data, risk rolling assessment of several hours to several days in the future can be realized, passive response is changed into active defense, and the operation and maintenance efficiency is improved.

The invention relates to the technical field of water and soil loss monitoring and prevention, in particular to a small watershed gravitational erosion simulation method based on multi-technology fusion, which comprises the following steps: determining a small watershed range, collecting and preprocessing multi-source data to construct a digital elevation model, extracting contour lines by utilizing ArcScene, and importing the contour lines into Rhino software to construct a three-dimensional terrain entity model; optimizing a grid by using a built-in Riddle plug-in and adopting a self-adaptive grid division algorithm, importing the grid into FLAC3D software to set parameters, and carrying out gravity erosion simulation; and comparing and analyzing with an ArcGIS topographic map to divide erosion risk grades. According to the method, the terrain modeling precision and simulation efficiency are improved through multi-technology fusion, it is ensured that risk assessment better fits actual geological conditions, and the method is especially suitable for small watershed gravity erosion simulation and prevention work of complex terrain areas such as loess plateau.

The invention provides a mountain torrent and debris flow disaster early warning method and system for a loess plateau region, and relates to the technical field of mountain torrent and debris flow disaster early warning. The collected mountain torrent and debris flow disaster related information is preprocessed based on the data preprocessing module, an early warning model is built based on the early warning module, and early warning recognition is carried out based on the early warning model according to the preprocessed mountain torrent and debris flow disaster related information. Through full-chain innovation of multi-dimensional perception, intelligent processing and accurate early warning, the theoretical limitation of a traditional early warning technology is broken through, and leap-type development of loess plateau torrential flood debris flow early warning from passive response to active prevention and control is achieved.

The invention discloses a method for quantifying the carbon-water coupling coordination degree of soil, relates to the technical field of ecological environment modeling, and particularly aims to solve the problem that only a single carbon cycle process or a single water cycle process is researched in the prior art in a vegetation recovery process in the background technology. The invention provides a method for quantifying the carbon-water coupling coordination degree of soil, which comprises the following steps: acquiring data, constructing a database, carrying out standardization processing on the database, constructing a soil carbon-water coupling degree model based on the processed database, and constructing a soil carbon-water coupling coordination degree model based on the soil carbon-water coupling degree model. And determining the soil carbon-water coupling coordination degree in the loess plateau vegetation recovery process based on the soil carbon-water coupling coordination degree model in combination with the soil organic carbon and moisture comprehensive evaluation function. The method is suitable for collaborative analysis of soil organic carbon and moisture under the condition of vegetation restoration in arid and semi-arid regions, and a technical basis is provided for ecological system management and vegetation configuration optimization.

The present invention relates to a method and system for extracting erosion gullies on the Loess Plateau based on deep learning, and relates to the field of remote sensing image extraction. The method includes: obtaining a first remote sensing image of the Loess Plateau; preprocessing the first remote sensing image to obtain a second remote sensing image; constructing a data set according to the second remote sensing image; constructing a deep learning model with dual-end input, where the deep learning model is used to extract erosion gully information on the Loess Plateau; training the deep learning model with the data set to obtain a trained deep learning model; obtaining a third remote sensing image of the Loess Plateau to be measured; and using the trained deep learning model to extract erosion gullies from the third remote sensing image. The present invention can obtain a high-precision erosion gully information extraction result.

The invention discloses a pavement structure suitable for a loess highland and a construction method, and belongs to the technical field of water and soil conservation engineering. The road surface comprises a road surface main body which is integrally paved on the loess tableland surface, and the width section of the road surface main body forms a continuous concave curved surface with low middle and high two sides; the roadbed supporting system is arranged below the pavement main body and sequentially comprises a loess compaction layer, a cement stabilizing layer and an impermeable layer from top to bottom; the drainage flow guide system comprises a built-in drainage groove formed in the lowest point of the middle of the road surface body, a lateral flow guide opening formed in one side of the road surface body and communicated with the built-in drainage groove and a connecting flow guide channel connected with the lateral flow guide opening, and one end of the lateral flow guide opening is connected with a waterlogging pool. And a roadbed supporting system, a drainage flow guide system and a water storage utilization system are integrated, so that the problems of tableland surface scouring, gully development and cultivated land occupation caused by unsmooth drainage of loess tablelands such as the Dong-Zhiyi tablelands are effectively solved.

The loess plateau slope water and soil conservation device and method belongs to the technical field of water and soil conservation and intelligent control, and comprises a pile foundation type executing mechanism, the pile foundation type executing mechanism comprises a spiral ground pile fixed in the slope soil body, a rotary base installed on the spiral ground pile to realize horizontal rotation, a pitching swing arm hinged on the rotary base to realize pitching movement, and a spraying guide pipe fixed on the pitching swing arm; an integrated sensing probe, the integrated sensing probe comprises a probe rod body, a plurality of layers of water content sensors arranged in layers along the length direction of the probe rod body, and a micro rain gauge installed at the top end of the probe rod body; and a central controller, the central controller is in communication connection with the integrated sensing probe and the pile foundation type executing mechanism respectively, is used for receiving sensing data and sending control instructions, and the model simulation precision of the real physical process is improved.