91 results about "Main river" patented technology

The invention discloses a riverway three-dimensional water flow numerical simulation method, and relates to the technical field of intelligent water conservancy simulation, and the method comprises the steps: generating a longitudinal long and narrow hexahedral mesh of a main riverway in a C gradient direction through employing a mucous network growth algorithm, and outputting a hexahedral mesh with a shear layer identifier; turbulence viscosity coefficient distribution is dynamically initialized through a DDPG reinforcement learning model, and turbulence parameters are output; inputting the hexahedral mesh with the shear layer identifier and turbulence parameters into a coupling solver, performing parallel numerical solution, and outputting transient flow field data; a lambda 2 criterion is adopted to identify a vortex core area and calculate a vorticity modulus, a transverse circulation is defined, an on-way distribution cloud picture is generated, an immersive VR scene is constructed through a Unity 3D engine, and a three-dimensional visual water flow simulation scene with a physical feature label is output. Through fusion of lambda2 criterion vortex identification and a Unity 3D visualization technology, a complete solution with both calculation precision and engineering practicability is provided for river flow simulation.

The invention discloses an intelligent water conservancy-oriented drainage basin flood forecasting system based on capacity expansion of a flood storage and detention area, relates to the technical field of intelligent water conservancy flood prevention forecasting and early warning, and aims to solve the problem of flood simulation forecasting errors caused by distortion of a water level-volume curve under a low storage capacity condition when internal subsections of a flood storage and detention area are started or partially outburst. The system comprises a main riverway hydrodynamic simulation forecasting module, a flood storage and detention area starting judgment module, a flood storage and detention area topology analysis module and a flood storage and detention area subsection expansion simulation module. The main river channel hydrodynamic simulation forecasting module adopts a hydrodynamic model to carry out flood simulation forecasting, the flood storage and detention area starting judgment module judges whether a flood storage and detention area is started or not according to user input data and a main river channel simulation result, and the flood storage and detention area topology analysis module determines the connection and capacity expansion sequence of each independent branch. The flood storage and detention area subsection capacity expansion simulation module realizes subsection capacity expansion simulation by dynamically calculating the outer boundary and the internal flood diversion flow, and calculation is scientific and efficient.

The present invention provides a device for regulating the water temperature discharged from a reservoir. The device for regulating the water temperature discharged from the reservoir includes a power station intake tower, a cable-stayed tower, a support platform and a water retaining system. The cable-stayed towers are respectively arranged on both sides of the water inlet of the power station intake tower. The support platform is a horizontal circular arch, and both ends of the support platform are connected to the cable-stayed towers. The water retaining system is connected to the circular-arch-shaped support platform and extends downward to the lower part of the reservoir. The water retaining system includes columns, collar rings, a water retaining curtain and a hoist. A plurality of collar rings are sleeved on the columns. The water retaining curtain is connected to the support platform and the plurality of collar rings. The hoist is connected to the upper collar ring. By arranging the cable-stayed towers on both sides of the water inlet of the power station intake tower, the present invention realizes the technical solution of implementing the water retaining system on a single-side bank slope, without blocking the main river channel, and the flood discharge condition does not need to bear the flood load.

The invention provides a basin sediment budget calculation method, which comprises the following steps of: arranging various types of collected basic data of a target basin into a grid form, carrying out uniform space registration, and dividing the various types of basic data based on a small basin boundary serving as a space unit of sediment budget calculation; for each small watershed, respectively calculating gravitational erosion, debris flow erosion, channel erosion and slope erosion to obtain spatial and temporal distribution of various erosion amounts and the total erosion amount in the target watershed; respectively calculating the sediment yield and the deposition rate of the small watershed scale aiming at the four types of erosion; on the basis of the calculated sediment production, the sediment transport amount of the small watershed suspended load in the main river water system is calculated section by section according to the upstream and downstream relation of the convergence river position of each small watershed in the target watershed, and distribution of the sediment transport amount of the suspended load in the flowing direction of the main river water system is obtained in combination with sand digging, reservoir sedimentation and the input amount and the output amount of the suspended load in the river reach. According to the method, the sediment space-time distribution in the basin erosion and basin sand-producing river sediment transportation multi-physical process can be comprehensively quantified.

The invention discloses a drainage basin non-point source pollution control and river water environment improvement system and an operation process thereof. The system comprises a main river channel, a closed area internal purification system and an intelligent control system. The automatic monitoring station in the main river channel monitors the water quality of the monitoring section and transmits data to the intelligent control system, and the intelligent control system is connected with the purification system in the closed area and controls the opening of the purification system in the area according to a monitoring result. The system can purify agricultural non-point source pollution and industrial sewage and domestic sewage point source pollution in the closed area by detecting the water quality of the river channel and regulating and controlling the water quantity of the river channel, promotes healthy development of a river ecosystem, scientifically, accurately and efficiently optimizes a purification system in the closed area by utilizing an intelligent control system, and improves the purification efficiency of the closed area. Therefore, the water quality monitoring section stably reaches the standard. The system has the advantages of convenient operation, stable performance, long-term efficient operation management and the like.

The invention discloses a cofferdam staging construction method which comprises the following steps: on the basis of the overall design of a cofferdam, adding a first-stage cofferdam design, and transversely dividing a river channel into a main river channel and a non-main river channel according to hydrological survey information; the first-stage cofferdam comprises an upstream cofferdam, a downstream cofferdam and a first-stage cofferdam overflowing riprap protector from a bank slope on one side of a non-main riverway to a main riverway joint part; the second-stage cofferdam is combined from a bank slope on one side of the main river channel to the first-stage cofferdam to form an integral Meanwhile, a first-stage cofferdam flood season flood season scheme is designed; according to the method, cofferdam filling construction is involved in advance before river closure, and cofferdam implementation is completed in two dry periods; construction of the cofferdam anti-seepage wall is involved in advance, the construction period of the cofferdam anti-seepage wall is prolonged, and equipment needed for construction of the cofferdam anti-seepage wall is greatly reduced; the cofferdam is filled by stages, so that the use efficiency of earthwork equipment is improved; the cofferdam is constructed by stages, so that the construction time of the cofferdam is prolonged, and the construction period of the cofferdam is better guaranteed; and through effective protection measures, the first-stage cofferdam flood safety is guaranteed.

The invention discloses a wandering type river reach main groove form change characteristic calculation method, system and device and a medium, and relates to the technical field of water conservancy projects. The method comprises the following steps: acquiring multi-source data of a wandering river reach; the multi-source data comprises meteorological data, hydrological sediment data, river topographic data and remote sensing image data; performing water and sediment situation change influence factor analysis according to the basic data, and determining a water and sediment mutation point; carrying out wandering section river channel evolution analysis on the basis of the water and sediment abrupt change points, determining river channel change data, and determining typical sections and corresponding river reach morphological parameters according to the river channel change data; performing ENVI processing and GIS calculation on the remote sensing image data in sequence to obtain main channel change data, and determining main channel on-way change data according to the main channel change data, the typical section and the corresponding river reach morphological parameters; the main channel on-way change data is used for representing wandering type river reach main channel form change characteristics. The method is beneficial to exploring and analyzing the wandering law of the main river channel in the wandering section.

The present invention relates to the technical field of disaster prevention and mitigation engineering, and particularly relates to a prediction method and a prediction model for the geometric shape of a debris flow dam formed by blocking a river. The prediction method collects original data according to the properties of the debris flow, the hydrodynamic conditions of the main river, the boundary resistance, the morphology of the main river, and the morphology of the debris flow gully, and predicts the accumulation height, the accumulation length, and the volume of the debris flow barrier dam, with high prediction accuracy.

The invention provides a drainage basin sediment prediction method, which comprises the following steps of: sorting various kinds of collected basic data of a target drainage basin into a grid form, carrying out unified space registration, and dividing the basic data based on a small drainage basin boundary serving as a sediment prediction space unit; for each small watershed, respectively predicting gravitational erosion, debris flow erosion, channel erosion and slope erosion to obtain future spatial and temporal distribution of various erosion amounts and the total erosion amount in the target watershed; for the four types of erosion, the future sediment yield and deposition rate of the small watershed scale are calculated respectively; and on the basis of the future sediment production, the small watershed suspended load sediment transport amount in the main river water system is calculated section by section according to the upstream and downstream relation of the convergence river position of each small watershed in the target watershed, and distribution of the suspended load sediment transport amount in the flowing direction of the main river water system is predicted in combination with sand digging, reservoir sedimentation and the input amount and the output amount of the suspended load in the river reach. The method can predict the sediment space-time distribution in the basin erosion and basin sand-producing river sediment transportation multi-physical process.

The invention provides a river network regulation and control method under a rainstorm condition. The method comprises the following steps: acquiring pollutant data at key water quality sections of a main river channel and a secondary river channel of a target river network; and constructing a hydrodynamic model of the target river network based on the pollutant data, the water passing area data of the river network, the hydraulic radius data, the section flow data, the water level data and the flow distance data. Acquiring climate data of the urban area where the river network is located, the pollutant concentration of rainstorm runoff, the actual position of the rainwater pump station and the influence range of the rainwater pump station; and determining the drainage flow, the urban area in the drainage area and the runoff water depth generated by the rainstorm. Obtaining the amount of rainwater entering the river. And setting a removal rate parameter for the hydrodynamic model. And simulating the water quality of the river network under the rainstorm condition by using the amount of rainwater entering the river based on the hydrodynamic model after the removal rate parameter is set to obtain a simulation result. According to the method provided by the invention, the river network regulation and control result under the rainstorm condition can be accurately evaluated.

The invention discloses a river water level inversion method taking altimeter footprint heterogeneity into consideration. The method comprises the following steps: acquiring an observation waveform of an SAR altimeter; space geometric parameters are calculated through footprint gridding and observation geometric modeling; constructing a water distribution scene based on the water mask and the river network, and classifying the water into a main river channel, a flood area and an adjacent isolated water body; electromagnetic scattering numerical integration is carried out based on the differentiated surface roughness parameters, and a simulated echo waveform is generated; waveform retracking and parameter inversion are realized through coarse grid search and local optimization solution; calculating an absolute water level and carrying out geophysical correction; performing multi-index quality control based on the interpretation rate of the analog waveform and the residual whitening degree; and finally outputting a water level product. According to the method, the defects of insufficient inversion precision and robustness of an existing method in a complex earth surface mixed scene are overcome, and the accuracy, reliability and physical interpretability of inland river water level monitoring are remarkably improved.

According to the moraine lake outburst risk judgment method and the application, a moraine lake outburst susceptibility judgment factor and a conversion value thereof, a glacial lake outburst debris flow occurrence possibility evaluation factor and a conversion value thereof, a main river blockage possibility judgment factor and a conversion value thereof of debris flow, and a conversion value of moraine lake outburst in a main river flood peak flow are calculated; and calculating a comprehensive moraine lake outburst risk discriminant value according to the conversion value and judging a moraine lake outburst risk grade. Aiming at the characteristics of moraine lake outburst danger, according to multiple conditions such as outburst flood, debris flow, main river blockage and flood formed by re-outburst which influence the moraine lake outburst danger, one-by-one analysis and comprehensive consideration are performed, so that the accuracy of a moraine lake outburst danger judgment result is improved, and the accuracy of the moraine lake outburst danger judgment result is improved. And the flood peak flow factor which affects the dangerousness to the greatest extent is considered prominently, so that the dangerousness evaluation result is more reasonable and more reliable.

The invention provides a high-fidelity generalization method and system for plain river network water flow simulation, and relates to the technical field of model simulation. The method comprises the steps that a node river network is constructed, constructing a physical river network topological structure comprising a main river channel node, a river reach, a regulation and storage node and a virtual river reach; a dynamic parameter configuration step: configuring hydraulic parameters for the section in the physical river network topological structure; a boundary coupling step: distributing water catchment unit runoff obtained by calculation of the hydrological model to corresponding regulation and storage nodes as boundary input conditions; and a simulation execution step: performing hydrodynamic simulation calculation based on the constructed physical river network topological structure, the configured hydraulic parameters and the distributed boundary input conditions. Through a high-low water level dynamic parameter method, a hydrodynamic model parameter calibration method is optimized, especially for rivers with large water level fluctuation amplitude, and the accuracy of simulation results is ensured.

The invention discloses an artificial intelligence-based beach area inundation loss prediction method and system, and relates to data processing and artificial intelligence technologies, and the method comprises the steps: obtaining the topographic data and satellite image data of a target drainage basin, and determining the main river channel range of the target drainage basin; identifying a possible beach area coverage range; performing grid division on the coverage area of any beach area, and determining a loss cardinal number in each grid; determining a plurality of submerging elevations based on the any beach area and the divided grids; acquiring current meteorological data and upstream water level monitoring data of the target drainage basin; utilizing a pre-trained LSTM model to predict the river flow of the future target drainage basin based on the meteorological data and the upstream water level monitoring data; and according to the predicted river flow and the reservoir capacity of the beach area under each submerging elevation, estimating submerging duration and submerging loss. The method and the device are used for realizing graded inundation loss estimation and improving the effect of pre-prediction of flood disasters.

The present invention discloses a method and application for determining the hazard of a moraine lake outburst. The method calculates a moraine lake outburst susceptibility factor and its conversion value, a moraine lake outburst debris flow probability assessment factor and its conversion value, a moraine lake outburst probability factor for debris flow blocking the main river and its conversion value, and a moraine lake outburst probability factor for the main river's peak flow. Based on the conversion values, a comprehensive moraine lake outburst hazard assessment value is calculated and the moraine lake outburst hazard level is determined. This method addresses the characteristics of moraine lake outburst hazard and comprehensively considers multiple factors that influence the risk of a moraine lake outburst, including outburst floods, debris flows, blocking the main river, and floods caused by re-outburst. This improves the accuracy of the moraine lake outburst hazard assessment results and prioritizes the peak flow factor, which has the greatest impact on the hazard, making the hazard assessment results more reasonable and reliable.

The present application relates to river filtering technical field, especially a kind of rotating filter screen with electric control translation mechanism, including the top beam of being installed in the upper end opening of river and the bottom limit frame of being fixed in river bottom, top beam lower end is fixedly equipped with the upper translation guide rail.The rotating filter screen with electric control translation mechanism of the present application can be switched according to the scene needs by adopting double-section structure design, so that its applicable scene greatly improves;By using electric control translation and overturning adjustment mode, the angle and position of rotating filter screen can be controlled, and the operation is more convenient;By using the design of top beam and bottom limit frame, the impact resistance of the entire rotating filter screen can be enhanced, and the structure is more stable;Rotating filter screen can be quickly attached on both sides of river by splitting, not only can switch filtering mode, but also can change the barrier inside main river, facilitate internal ecology, improve different application scenarios.

The application discloses a surveying-based binary structure small watershed division method and system, and particularly relates to the field of watershed division. Basic data processing of the application includes collecting and preprocessing topography, remote sensing and other data, establishing a basic database, converting vector contour line data into DEM and filling in depressions, generating a non-depression DEM, determining water flow direction by using a D8 algorithm, calculating cumulative flow, and generating a river network. The river channel is converted into a vector runoff network, the sub-watershed range is extracted and mapped, the outcrop point of underground river or karst spring is taken as a corrosion reference, the watershed outlet is determined in combination with the main river channel of a large river, and a complete correlation system is constructed. Finally, the development of the underground water system pipeline is determined through hydrogeological investigation, geophysical prospecting, drilling and pumping test, the results of comprehensive investigation, geophysical prospecting, drilling and pumping test are comprehensively considered to accurately correct the boundary of the underground water system, and the underground water system distribution map conforming to the actual conditions is formed in combination with remote sensing images and administrative division maps.

The present invention discloses a small watershed river-lake separation type ecological conservation system, which includes a separated conservation pond and a natural conservation pond. The separated conservation ponds are arranged at both sides of the natural conservation pond at intervals. River water is introduced through an ecological water retaining dam arranged in the main river course. The river water treated in the separated conservation pond then returns to the main river course and enters the next separated conservation pond. In this way, the ecological improvement of the river water can be carried out through circulation. The present invention establishes a "separated conservation pond" and a "sectional conservation pond for the main river course" through the "river-lake separation" method, realizes the combined operation of the steady state and dynamic state of the conservation pond, effectively avoids the damage of flood disasters to the facilities, and through the multi-type and flexible design of the conservation pond, maximally reduces pollutants such as nitrogen and phosphorus in the water body in an economic and ecological way, realizing the long-term treatment of the river course.

The invention discloses a reservoir area beach land desilting method which comprises the steps that (1) a buoyancy tank dam body is arranged at the narrow position of the upstream of an artificial channel; (2) a plurality of artificial channels are dug in the reservoir area beach land on one side or two sides of a riverway main channel in sequence; (3) the draft depth and the water retaining angle of the buoyancy tank dam body are adjusted; water flow in the main channel of the river channel is guided into the artificial channel closest to the main channel of the river channel, and under the combined action of base flow scouring and transverse scouring of the water flow, deposits between the artificial channel and the main channel of the river channel are flushed to the front dam sand discharging funnel of the reservoir area dam and are discharged to the downstream of the dam through the flood and sand discharging bottom hole. And (4) repeating the step (3) until the desilting work of the reservoir area beach land is completely completed. Compared with other mudflat siltation treatment measures, the method has the advantages that investment is saved, equipment can be sustainably utilized, and the mudflat desilting effect is obvious, the reservoir area beach storage capacity and the main groove storage capacity can be increased, the beach storage capacity can be kept for a long time, and therefore the purpose of increasing the effective storage capacity of the reservoir is achieved.

The invention discloses a binary structure small watershed division method and system based on surveying and mapping, and particularly relates to the field of watershed division. Basic data processing comprises the steps of collecting and preprocessing data such as terrain and remote sensing, establishing a basic database, converting vector contour line data into DEM and filling depression, generating a non-depression DEM, and then determining the water flow direction by adopting a D8 algorithm; calculating accumulated flow to generate a river network; converting a river channel into a vector runoff network, extracting a sub-basin range and drawing, determining a basin outlet by taking an underground river dew point or a karst spring as a dissolution reference and combining a main river channel of a large river, and constructing a complete association system; and finally, through hydrogeological survey, geophysical prospecting, drilling and water pumping tests, underground water system pipeline development conditions are determined, comprehensive survey, geophysical prospecting, drilling and water pumping test results are obtained, an underground water drainage basin boundary is accurately corrected, and an underground water drainage basin distribution diagram meeting actual conditions is formed by combining remote sensing images and an administrative map.

Provided is a laboratory experiment system including an upstream reservoir. A main river channel is connected to a water outlet of the upstream reservoir. A barrier dam is built up in the main river channel. Uneroded dam bodies are constructed on two side surfaces of the barrier dam. A branch river channel extends on a surface of the barrier dam. A material hopper is connected to a feed inlet of the branch river channel. River banks are constructed on outer sides of the uneroded dam bodies. The feed inlet is docked with a descending conveyor belt. A feeding end of the descending conveyor belt is docked with an ascending conveyor belt. A discharge end of the material hopper defines a bottom hole. The bottom hole is connected to a material pipe. A discharge end of the material pipe corresponds to an inner side of the ascending conveyor belt.

The invention discloses a water pollution big data monitoring and early warning method and system, and relates to the technical field of water pollution monitoring, and the method comprises the steps: transversely arranging a plurality of flow velocity measurement points on a main river and branch flow convergence section, obtaining the flow velocity data of each flow velocity measurement point, and constructing a transverse flow velocity profile according to the flow velocity data; determining a shearing area according to the flow velocity difference value and the flow velocity change rate between the adjacent flow velocity measuring points, and determining the central position of a mixing zone; controlling a water quality sampling probe mounted on a transverse guide structure to transversely move along the section according to the central position of the mixing zone, so that the water quality sampling probe is positioned at the central position of the mixing zone; and acquiring real-time water level data, and calculating the target sampling depth according to the real-time water level data. A transverse flow velocity profile is constructed on a main river and branch flow convergence section, and the central positions of a shearing area and a mixing zone are determined based on a flow velocity difference value and a flow velocity change rate, so that a water quality sampling probe can be dynamically positioned in a key area of a hydrodynamic structure.

The application provides a catchment sediment prediction method, which comprises the following steps: collecting various types of basic data of a target catchment, arranging the basic data into a grid form and performing unified spatial registration, and dividing the basic data based on small catchment boundaries as spatial units for sediment prediction; for each small catchment, gravity erosion, debris flow erosion, gully erosion and slope erosion are predicted respectively to obtain the future spatio-temporal distribution of various types of erosion and total erosion in the target catchment; the future sediment yield and deposition of each small catchment are calculated respectively for the four types of erosion; based on the future sediment yield, the upstream and downstream relationships of each small catchment in the target catchment are considered to calculate the suspended sediment transport capacity of the small catchment in the main river system in sections, and the distribution of the suspended sediment transport capacity along the flow direction of the main river system is predicted by combining the dredging, reservoir sedimentation and the input and output of the suspended sediment in the river section. The application can predict the spatio-temporal distribution of sediment in the multi-physical process of catchment erosion, catchment sediment yield and river sediment transport.

The invention relates to the technical field of concentrate dewatering, and particularly discloses a concentrate dewatering water circulation system applied to beneficiation engineering, which comprises a ground, one side of the ground is provided with a water pool, the upper surface of the ground is fixedly provided with a squeezing table, and the upper surface of the squeezing table is fixedly provided with a plate pressure dewatering device; a main river channel is formed in the upper surface of the ground, an auxiliary channel device is arranged on one side of the main river channel, the auxiliary channel device comprises an auxiliary channel body, a notch and a door body, and the auxiliary channel body is arranged on one side of the main river channel. The first sedimentation tank, the second sedimentation tank and the third sedimentation tank can be independently cleaned, the whole riverway does not need to be cleaned every time, the cleaning time is greatly shortened, the sedimentation tanks are easier to clean, the color change of liquid in the PH adjusting tank can be effectively and easily observed by arranging the PH observation port, and the working efficiency is improved. The PH adjustment is more accurate.

The invention discloses a floodplain biological habitat system which comprises a floodplain, a plurality of biological habitat ponds are arranged on the floodplain, the biological habitat ponds are connected in series through side channels to form a biological habitat pond ecological link, and the water inlet end of the biological habitat pond ecological link is communicated with the water outlet end of a water inlet channel through the side channels. The water inlet end of the water inlet channel is communicated with the main riverway, the water outlet end of the biological inhabitation pond link is communicated with the water inlet end of the water outlet channel through the side channel, the water outlet end of the water outlet channel is communicated with the main riverway, an ecological frame belt is arranged between the main riverway and the floodplain, and the water inlet channel and the water outlet channel both penetrate through the ecological frame belt; the invention further discloses a construction method of the flood plain biological habitat system. According to the method, the original floodplain landform is fully reserved and utilized, diversified biological habitat environments are set, meanwhile, the technology has small influence on the surrounding environment, the engineering investment is low, river landscapes can be enriched, and the method has good application prospects.

The utility model discloses a broken river treatment structure which comprises a river channel body, an ecological platform is arranged corresponding to the broken end of the river channel body, the horizontal height of the ecological platform is higher than that of the water surface of the river channel body, an ecological water tank is arranged on the ecological platform, and water flowing out of the ecological water tank can enter the river channel body. A fluid conveying part is connected between the river main body and the ecological water tank, and a plurality of biological reaction components are distributed on the ecological water tank. The system has the following advantages and effects that the system can effectively activate the water system in the whole area, and the dispatching capability of the water resource in the area is improved, so that the water quality of the river channel is improved.

The present invention discloses a method for macroscopically identifying river-blocking disaster events based on the width of the river valley and the slope change of the main river, which relates to the technical field of identifying river-blocking landslides and debris flows, including: S1, obtaining high-precision DEM elevation data; S2, calculating the cross-section fitting average values ​​of the central section, upstream section and downstream section in the direction perpendicular to the main river; S3, calculating the main river gradient of the central section, upstream section and downstream section in the direction parallel to the main river; S4, determining the possibility of the identified slope / channel having a river-blocking disaster event in history, and the possibility of a river-blocking disaster event occurring in the future, based on the results of S2 and S3. This method can not only macroscopically identify whether a river-blocking disaster event has occurred in the area to be identified in history, and whether a river-blocking disaster event will occur in the future, but also provide a verification basis for the results of numerical simulation, and provide a target area for on-site investigation and sampling measurement, thereby improving the accuracy of identifying river-blocking disaster events.

The invention provides a deep compact dessert reservoir prediction method, which comprises the following steps: carrying out record calibration according to seismic data and logging information; the method comprises the following steps of: establishing a corresponding relation between a reservoir and seismic reflection through reservoir fine calibration, carrying out profile facies tracking by utilizing a threshold method, and determining a favorable facies belt existing in the reservoir; in a reservoir facies belt favorable development area, OVT domain angle division seismic attribute fusion based on phased seismic attribute quantification is carried out, and a main river channel sand body boundary and a favorable reservoir distribution area are depicted; determining an electrical property identification standard of the reservoir, and identifying a sweet spot reservoir in a favorable area and an elastic parameter sensitive to physical properties of the reservoir; and according to the elastic parameters, the sweet spot reservoir distribution range at the unknown position of the underground space is reversely deduced through a quantity version method-multi-parameter-pre-stack and post-stack inversion method. According to the method, the problem of high prediction multiplicity is solved, the specific seismic response characteristics of the deep compact sweet spot reservoir are represented, high-precision prediction is realized, and a direction is indicated for exploration and development of deep compact thin reservoir sweet spots.

The invention relates to a reservoir desilting and desilting method beneficial to long-term maintenance of flood control reservoir capacity. The reservoir desilting and desilting method comprises the following steps: collecting river topography, reservoir area water and sediment, reservoir dispatching modes and reservoir siltation data after reservoir storage and application; finding out a main river reach where the flood control storage capacity is silted; in a main river reach where the flood control reservoir capacity is subjected to silt loss, a main time period when the river reach is subjected to scouring is found from actual measurement data; a typical water and sediment process is selected from the main washing time period; establishing a reservoir one-dimensional non-constant running water and sediment mathematical model with a desilting and desilting simulation function; the built mathematical model is adopted, after the silt in the flood control reservoir capacity is calculated and added into the selected typical water and sediment through desilting measures, the desilted silt in the flood control reservoir capacity is conveyed into the dead reservoir capacity on the lower stream or partially conveyed out of the reservoir through reservoir optimization dispatching and by means of the sediment carrying capacity of water flow. The problem of how to couple reservoir desilting and reservoir dispatching and desilting to guarantee long-term use of the flood control reservoir can be solved.

The invention discloses a drainage basin unit extraction method for debris flow susceptibility evaluation and early warning. The drainage basin unit extraction method comprises the following steps: (1) filling pits; (2) flow direction analysis; (3) calculating the number of catchment pixels; (4) extracting a river network; (5) river network grading; (6) determining the grade of the river network where the debris flow disaster point is located and the converged river network; (7) determining the highest river network grade of the debris flow basin unit; (8) determining the outlet position of the debris flow basin unit; and (9) generating a drainage basin unit. The drainage basin unit extracted by the method not only retains the drainage basin with a smaller area, but also retains the integrity of the drainage basin with a larger area, and does not contain a water collecting area formed by a main river and slopes on two banks.