112 results about "Sand mining" patented technology

The invention provides a long-term monitoring method for a wind-blown sand flow of a near surface. A device used in the method consists of an over-ground part and an underground sand storage device, wherein the over-ground part consists of a sand mining device serving as a sand mining machine, a wind-driven steering device and a ground protection ring; and the underground sand storage device consists of a fixed outer barrel and a sand collection box. By the method, the sand mining machine can be driven by wind power to rotate, so that a sand inlet is opposite to wind direction all the time, the transported sand in a range of the same wind direction can be collected in the same sand accumulation box, distortion of observation data caused by wind erosion around the sand mining machine can also be prevented, and a large sand storage space can ensure long-term continuous observation. The method is suitable for long-term fixed point observation of wind-blown sand flow under an outdoor unattended condition, so that outdoor working strength of an observer can be relieved.

The present invention discloses a sand mining ship monitoring device and method for dynamic networking and intelligent identification. The device comprises a fixed point acoustic collecting module, asand mining ship main control module, a sand mining ship engine acoustic collecting module, a sand mining ship sand excavating mechanism acoustic collecting module, a cloud server data communication module, a dynamic networking and data fusion module, an intelligent identification module, and a display and alarm module. The fixed point acoustic collecting module is connected with the cloud serverdata communication module, and is configured to collect background acoustic characteristics of different regions; both the sand mining engine acoustic collecting module and the sand mining ship sand excavating mechanism acoustic collecting module are connected with the sand mining ship main control module, and are configured to collect acoustic characteristics of the engine and the sand excavatingmechanical components; and the data collected by the cloud server data communication module is sequentially processed by the dynamic networking and data fusion module and the intelligent identification module, and then transferred to the display and alarm module. The acoustic characteristics of other sand mining ships at different regional locations are collected, the analysis of the state of theto-be-identified dredger is assisted, and the accuracy is improved.

The invention discloses a river and lake shoreline sand mining monitoring and analyzing method and device. The method comprises the steps of acquiring satellite image data in a river and lake shoreline range; performing data range masking according to the river and lake shoreline management range line, and screening to-be-processed satellite image data according to time and space coverage conditions; establishing a sand mining phenomenon recognition sample library, training a model, performing sand mining phenomenon intelligent detection and recognition on to-be-processed satellite image databy utilizing the trained model, and performing optimization processing on a sand mining phenomenon recognition result; carrying out superposition analysis on the sand mining phenomenon intelligent detection and identification results of the satellite image data in different periods to obtain a sand mining phenomenon change situation; pushing information to the field survey APP from the sand miningsuspected point location, and receiving field check information; and generating a sand mining analysis report, and forwarding the report to the monitoring command system. According to the invention,rapid screening is realized, the sand mining detection database is established by adopting the sand mining image data, automatic identification of sand mining phenomena with various forms is realized,and the working efficiency is improved.

The invention discloses a ship feature re-identification method, application method and system based on deep learning, and According to the method, a deep feature extraction network with the efficientprocessing capability in the field of image perception is used to extract the deep features with the distinction degree, the deep features with the high-level perception semantics is autonomously extracted, the change of pixel levels is not depended on, and the overall features are considered, so that the problems of overwater supervision, low ship information query efficiency and the like causedby inaccurate matching and high detection error rate are solved, and the target ship discrimination can be effectively carried out. The PCB partitioning and the matrix type operation matching have the good recognition effect for the ships only parts of which occur, the matching speed is high, the problems of ship transformation, hidden identity escape supervision and the like are solved, and theintelligent auxiliary effects on the maritime traffic management, accident investigation, water conservancy attack illegal sand mining, navigation channel ship gate passing charging, customs attack private activities and the like are achieved. Compared with a ship identification method in the prior art, the ship re-identification method has obvious advantages in efficiency, cost and accuracy.

The invention relates to a river sand excavation intelligent monitoring method and system; the invention comprises a sand excavation detection sensor, a sand excavation working condition detector, a relay, a concentrator, an unmanned plane and host station server hardware equipment, a wireless communication network, a sand excavation detection algorithm and a sand excavation working monitoring software system; the method takes the advantages of the internet of things technology and intelligent detection technology, deploys the sand excavation detection sensor in sand excavation monitoring areas in a hidden manner, deploys the sand excavation working condition detector on a legally permitted sand excavation boat, thus real time monitoring the sand excavation working conditions, using the wireless mode to send the detection information to the monitoring center, intelligently parsing the sand excavation working conditions, carrying out real time tracking on sand excavation total amount, working areas and working time conditions of the legal sand excavation behaviors, finding illegal ship mining behaviors and disorder mining, disorder sand excavation and over excavation behaviors of the legal ships, timely sending early warnings, providing accurate position guiding, and dispatching the unmanned plane to obtain video evidences on the illegal sand excavation scene.

The invention relates to the technical field of sand mining, in particular to an intelligent sand mining monitoring device and method, and the device comprises a portal layer, a business application layer, a data storage layer, a data collection layer and a data transmission layer. The portal layer is connected with the business application layer, and the business application layer, the data storage layer and the data acquisition layer are all connected with the data transmission layer. All-around informatization technical support can be provided for sand mining law enforcement work of a lakemining area, basic information of the mining area, a sand mining ship, a sand transporting ship and the like is comprehensively displayed, and working states of various ships are dynamically displayed; the real-time monitoring capability of the whole lake sand mining area, especially sand-related ships, is improved, the passing ship access information is identified and recorded through an IT-basedtechnical means, and all-weather indiscriminate real-time intelligent monitoring of key water areas is realized; data acquisition, statistics and analysis of the mining amount of the lake mining areaare achieved, practical and reliable decision assistance is provided for a water administrative department, and the scientific decision level of the water administrative department is improved.

The invention is concerned with shock sand-grave fire extinguishing cannon, a fire extinguishing system for forest and grassland with sand-gravel and dust. It relates to compressed gas supply, compressed gas cut-off valve, shock tube, separating valve of shock tube sand-grave cannon, sand-grave cannon, sand-grave, sand-grave transportation framework and sand-grove mining machine. The tube type of shock tube is separated into high press cavity and low press cavity by on-off valve of film. The compressed gas supply is made up of air compressor and gas storage connecting with the tube of shock tube. The separating valve of shock tube sand-grave cannon connects with shock tube and sand-grove cannon. The sand-grave transportation framework is in type of chain or spire, and its front part connects with vibration filtration framework to sand mining machine, and its back part connects with the sand-filling hole to sand-grave cannon. The compressed gas supply connects with shock tube by compressed gas cut-off valve. The material to put out a fire is familiar and the invention has high efficiency and effect, long cannon-shot to save energy sources.

The invention is concerned with gas sand-gravel fire extinguishing system for forest and grassland with sand-gravel and dust. It relates to sand mining machine, sand transportation framework, vibration filtration framework, sand distributing framework, venturi tube, gas leading tube and air injection gas turbine. The sand mining machine is at the bottom of the whole equipment, while working, it connects with the earth and the spade blade mines sand and dust by deadweight or the power of spring. The sand transportation framework is in type of chain or spire, and its front part connects with leading shell to the mining machine, and its back part connects with vibration filtration framework. The two ends of venturi tube is expanding and the middle of it is contracted with some radial holes at the throat, its lumen connects with gas leading tube and outside cavity connects with sand distributing framework. This invention continues to work with well effect and high power.

The invention provides an ecological restoration method for microtopography of a riverbank zone abandoned sand mining field in a high altitude area. The ecological restoration method comprises the following steps that S1, revetments are built along a riverway, specifically, the revetments with gradients are built on the two sides of the riverway correspondingly, and gabion protection feet are arranged at the slope toe of each revetment; S2, an ecological wetland is newly built, specifically, a plurality of islands are piled up on a sand field riverbed between the revetments and a riverbank soil foundation through sand gravels, and integrally earthed, green plants are planted on the islands, and emergent aquatic plants are planted at low-lying positions; S3, the wetland is subjected to ecological water supplementation, specifically, effluent water of a sewage station is used as ecological supplemented water of the wetland; and S4, a water ecosystem is maintained, specifically, in the wetland maintenance period, damaged nursery-grown plants are timely updated and rejuvenated, and the plants planted in the wetland are maintained according to ecological characteristics of the plants. According to the restoration method, the ecological microtopography is constructed for the abandoned sand field in an alpine area, so that the effects of purifying water, preventing water and soil lossand beautifying the riverbank landscape are achieved, pertinence is high, stability is good, landscape performance is high, and subsequent maintenance difficulty is low.

The invention discloses a non-powered automatic impurity removal device for river sand mining equipment, which comprises a first impurity removal box, a second impurity removal box, a conical net cover, an inclined material guide plate, an iron impurity recovery device, an inner cylinder, arc-shaped net, rotating cylinder, propeller impeller, fixed cylinder and pressure relief valve, the upper side of the first miscellaneous removal box is fixedly connected with an inclined material guide plate in the shape of left lower and right higher; pebbles, water plants , plastic bags, branches and other sundries are blocked by the conical net cover, and move down to the inclined material guide plate, and the sundries move down and are discharged into the square tube through the miscellaneous discharge pipe, and the sundries fall out after passing through the square tube. The iron impurities are adsorbed on the magnet rod, which facilitates the recovery of iron impurities. The sand and water in the rotating cylinder are discharged through the sand outlet pipe, realizing the effect of two times of impurity removal without power, and when the water in the inner cylinder flows downward , it will make the propeller impeller rotate, then drive the rotating cylinder to rotate, which is convenient for the suction cylinder to rotate and absorb sand.

The invention discloses a satellite image river two-side sand mining extraction method and system based on deep learning, and the method comprises the steps: 1, carrying out the data preprocessing ofa satellite image, and obtaining an earth surface real image and a normalized water body index image; 2, performing data annotation on the surface real image to obtain a surface real annotation imagecontaining sand mining and non-sand-mining information; 3, synchronously cutting the ground surface real image, the normalized water body index image and the ground surface real labeling image, and carrying out data enhancement to obtain a sample required by deep learning algorithm training; 4, training the samples; 5, performing river two-side sand mining information extraction on the input earthsurface real image and the normalized water body index image by using the model obtained by training to obtain an earth surface real prediction image; and 6, manually correcting an error result of the ground surface real prediction image to the ground surface real annotation image by judging whether the extraction precision reaches the standard or not, and carrying out loop iteration training until the precision reaches the standard or outputting a final extraction result.

The invention provides a method for restoring ecology in northern riverbank sand mining site, and belongs to the sand mining site ecology restoration method technology field. The method comprises arranging and improving sand mining site soil matrix, and comprises the steps of first plowing original soil matrix, namely removing sand generated in the process of sand mining on the face of land mainly to expose original habitat matrix; manufacturing a small habitat, namely digging a fish scale pit on the sand mining site covered by soil; selecting plant species, namely selecting herbaceous plants or woody plants; planting the plants; managing at a seedling stage, namely irrigating by pouring or sprinkling, and fertilizing with an organic fertilizer. The protruding characteristics of the present invention are that vegetation restoration and habitat restoration are integrated, so that vegetation coverage rate can be obviously improved; plant habitat can be improved; ecological system can be enhanced; water and soil can be maintained; and pollutant can be degraded. An experiment shows that the vegetation coverage rate is raised by 40%-60%, and the plant productivity is raised by more than 30%-50%. The method plays an important role in maintaining regional ecology safety and grain production safety.

The invention discloses a self-adaptive monitoring method of a sand dredger self-adaptive monitoring system based on deep learning. The sand dredger self-adaptive monitoring system comprises a front-end monitoring terminal, a reasoning recognition device and a server management device. The front-end monitoring terminal comprises an embedded microprocessor, a water bank monitoring camera, a Beidou positioning module and an energy condition monitoring module; the reasoning recognition device comprises an embedded PC, and a wireless image transmission communication module, a deep learning acceleration card, a 4G wireless communication module, an Ethernet module and an SD card data storage module which are electrically connected with the embedded PC; the server management device comprises a sand dredger management Web platform, a sand dredger identification server, a monitoring state analysis server and a storage server, wherein the sand dredger identification server, the monitoring state analysis server and the storage server are electrically connected with the sand dredger management Web platform. According to the invention, automatic identification when the river and lake sand dredger enters and exits a sand excavation area and identification, evidence obtaining and early warning functions of illegal river and lake sand dredgers can be realized.

The invention discloses a multi-ball-point embedded pile for geological disaster early warning, and belongs to the field of geological disaster early warning. The multi-ball-point embedded pile for geological disaster early warning is characterized in that through the arrangement of the embedded pile, when geology sinks, a pre-broken sinking rod bears downward pressing force and acts on an outer marking end below the sinking rod, so that the surface of a marking ball is notched, and color sand inside flows out; and after the pre-broken sinking rod is broken and loses downward pressing force, the outer marking end recovers deformation, a notch disappears, the color sand stops overflowing, when it is detected that sinking exists in the embedded pile, soil near the embedded pile can be excavated, the specific sinking situation is judged according to the amount of the color sand, meanwhile, after the pre-broken sinking rod is broken, spikes gradually get close to an inner light breaking ball until the inner light breaking ball is punctured, so that fluorescent liquid in the inner light breaking ball overflows, the geological sinking position can be marked in an auxiliary manner, workers can judge the geological sinking condition visually, corresponding solutions can be taken conveniently, and potential safety hazards are reduced.

The invention discloses a sand dredger sand excavation monitoring method based on deep learning, and the method comprises the following steps: obtaining a sand excavation monitoring video of a tipping bucket type sand dredger, and processing a to-be-recognized video to obtain an image; constructing a sand excavation detection model and a sand excavation tracking model of the sand dredger based on a Pytorch framework; training the sand excavation detection model; transplanting the trained model to an edge calculation module; an edge calculation module is used for controlling a camera to obtain a sand excavation real-time monitoring video of the tipping bucket type sand dredger, target detection and recognition of a sand excavation hopper are carried out on the sand excavation real-time monitoring video, and then target tracking is carried out on the recognized sand hopper; the sand excavation monitoring device can detect the number of sand excavation hoppers of the sand excavation ship within a period of time, identify the filling condition of each sand excavation hopper, judge whether the sand excavation hoppers are full or empty, perform target tracking on the identified sand hoppers and count the number of the sand excavation hoppers within a period of time. The sand excavation condition and quantity are monitored and counted, so that sand excavation management becomes more scientific, efficient and normative.

The invention discloses a protective device for a cable joint in a sediment mining area, which comprises a fixed plate, a supporting device, a slide rail, a sliding sleeve, a threaded column, a pretightening force adjusting nut, a height adjusting nut, a fixed semi-circular ring, and a movable semi-circular The ring and the clamping limit device, through the function of the legs, make the present invention firmly placed on the ground, erect the cable, effectively eliminate the hidden danger of electric leakage in the cable joint when it rains or when the ground is wet, avoid the cable short circuit phenomenon, and The operation is simple and fast. By loosening and tightening the jacking bolts, it is convenient to adjust the position of the sliding sleeve, so it is convenient to adjust the position of the cable, and the number of sliding sleeves can be increased on the slide rail according to the needs, which is convenient to use. During the process, the first coil spring has the function of shock absorption, and the shock absorption effect of the first coil spring can be adjusted by adjusting the pre-tightening force adjustment nut, and the height of the cable erection can be easily adjusted by adjusting the height adjustment nut, and the structure is simple.

An earth removal and sand mining system is provided, comprising a modular floating platform having an elongated U-shaped open channel defining an operating area; a gantry positioned above the operating area, wherein the gantry includes a crane and trolley operable along a predefined path within the operating area; a hoist extending from the trolley; and a pump operatively suspended from the trolley, wherein the pump includes a slurry discharge hose. The platform includes an adjustable drag line connected to the pump to provide maximum control over the pump position for efficient operation.

The invention belongs to sand mining and washing equipment, in particular to multi-chain bucket sand mining and washing equipment. Therefore, the invention aims at solving the technical problem that the multi-chain bucket sand mining and washing equipment which integrates sand mining and separation, is capable of increasing work efficiency and is capable of reducing sand mining and transport costis not provided. The technical solution is that the multi-chain bucket sand mining and washing equipment comprises a boat body, a worktable, a first swing seat, a swing plate, a three-section oil cylinder, a chain plate, charging hoppers, a first carrier roller, a second carrier roller, a mounting plate, a servo motor and the like; the worktable is arranged above the boat body; the left part of the upward side of the worktable is fixedly connected with the first swing seat; the left part of the upward side of the worktable is fixedly connected with the swing plate; and the swing plate is located at the left side of the first swing seat. According to the multi-chain bucket sand mining and washing equipment disclosed by the invention, the charging hoppers are capable performing sand mining through extension and retraction of the three-section oil cylinder and running fit of the servo motor; position and height of blanking can be adjusted when a person rocks a rocking handle; and a gear is clamped through a clamping plate, and therefore, a blanking plate is kept at a proper height.

The invention discloses a gravel yard vehicle management system. The gravel yard vehicle management system comprises a vehicle information identification module, an automatic management module, a service planning module and a user side module. The method using the system comprises the following steps: inputting a sand mining plan of each sand mining point of the sandstone field into the business plan module, and identifying vehicle information of a truck entering the sandstone field through the vehicle information identification module; obtaining a sand mining plan and vehicle information through the automatic management module, conducting distribution as required according to the sand mining plan and the predicted cargo capacity of a truck, distributing tasks to a driver through the userside module, and automatically popping up the tasks to the truck driver through the user side module; the vehicle information recognition module collecting the weight of the truck when the truck is pulled out of the gravel yard, obtaining the actual cargo capacity of the truck through calculation, the automatic management module receiving data transmitted by the vehicle information recognition module, and automatically working out the transportation cost needing to be paid to a truck driver in the gravel yard. The problem that it is difficult to distribute trucks according to the sand mining amount in a gravel yard according to needs is effectively solved.

The embodiment of the invention provides a lake sand dredger remote sensing identification method which comprises the following steps: firstly, acquiring a remote sensing image of a working area, andextracting a lake area of the working area based on the remote sensing image; then obtaining a non-sand-mining area in the lake area, and determining a mobile facility area in a remaining area obtained after the non-sand-mining area is removed from the lake area; and finally, determining a sand mining area in the lake area, and determining a sand mining ship in the working area based on the sand mining area and the mobile facility area. The identification of the sand dredger can be accurately realized to facilitate analyzing and research of the sand dredger information of lakes.

An eco-restoration system of a sand mining riverbed includes a riverbed restoration device and a server. The riverbed restoration device includes a connecting plate, wherein the connecting plate comprises connecting ring plates and lengthening plates, the connecting ring plates are connected with one another, a formed cross section is a closed figure, and the lengthening plates are connected withthe bottom edges of the connecting ring plates to increase the height of the riverbed restoration device; the connecting plate comprises planting devices for placing plant seeds for restoring a riverbed, and the server is used for storing riverbed morphological data and calculating the height and quantity required for the riverbed restoration device. The eco-restoration system of the sand mining riverbed provided by the invention can adjust the height of the riverbed restoration device according to the river bed condition, the riverbed are initially fixed, the river bed landslide is preventedthrough the growth of plant roots, the flood control effect is ensured, the aquatic organism habitat is protected, and thus the self-purification ability of the water body is provided.

The invention belongs to the technical field of quartz sand recovery, and particularly relates to a quartz sand mining area tailings recovery treatment device. The device comprises a U-shaped pipe, afeeding hopper, a receiving hopper, a water spraying pipe, water passing holes and a flushing pipe; the receiving hopper is arranged at one end of the U-shaped pipe; the feeding hopper is arranged above the receiving hopper; a water spraying hole is formed in a discharging hole in the bottom of the receiving hopper; the diameter of the discharging hole is larger than that of the water spraying hole; the water spraying hole communicates with a water source through the water spraying pipe and a water pump; the bottom of the U-shaped pipe is positioned in the concentric square-shaped flushing pipe; circulating water flows in the flushing pipe; and a group of the water passing holes are formed in the part, located inside the flushing pipe, of the U-shaped pipe. According to the device, soil adhered to quartz sand is flushed through water flow sprayed by the water spraying hole; and when suspension liquid formed by the soil, the quartz sand and water flows through the bottom of the U-shapedpipe, and the circulating water in the flushing pipe flows through the water passing holes to take away slurry containing the soil so as to well separate the soil from the quartz sand.

The invention discloses a coastal zirconium-titanium ore sand mining platform and a mining process. The coastal zirconium-titanium ore sand mining platform involves a cutter suction assembly, a cuttersuction floating body platform, a spiral chute ore dressing system, a material pipeline pumping system, an ore dressing floating body platform, a generator set and a power generation floating body platform, wherein the cutter suction assembly is fixedly arranged on the cutter suction floating body platform, the spiral chute ore dressing system and the material pipeline pumping system are arrangedon the ore dressing floating body platform, the generator set is arranged on the power generation floating body platform, the cutter suction floating body platform and the power generation floating body platform are located on the two sides of the ore dressing floating body platform correspondingly, the generator set supplies power to the cutter suction assembly and the spiral chute ore dressingsystem through cables, the output end of the cutter suction assembly is connected with the input end of the spiral chute ore dressing system through the material pipeline pumping system, and the output end of the spiral chute ore dressing system is connected with a concentrate conveying pipeline and a tailing discharging system. The coastal zirconium-titanium ore sand mining platform and the mining process thereof have the advantages of being reasonable in spatial arrangement, capable of crushing hard layers and high in mining efficiency.

The ecological restoration device suitable for the northern sand excavation river bank zone comprises a restoration net covering an upper river bank side slope and a pressing and covering mechanism used for pressing and covering the restoration net, the restoration net comprises vertical pipes and transverse pipes which can be bent and wound, and a plurality of connecting pipes are arranged between the vertically-adjacent transverse pipes; a plurality of fixedly connected positioning blocks are arranged at the bottom of the transverse pipe, positioning grooves are formed in the positioning blocks, inserting rods capable of moving up and down are arranged in the positioning grooves, the ends of the inserting rods are sharp, material storage grooves are formed in the inserting rods, plant seeds are stored in the material storage grooves, and the pressing and covering mechanism comprises a walking base, a supporting frame and a pressing and covering roller. By means of the design of the repairing net, the repairing net can be utilized, water and soil loss of the river bank side slope can be effectively prevented, the repairing net can be effectively pressed and covered on the surface of the river bank side slope through the pressing and covering roller in the pressing and covering mechanism, attaching is tighter, and the overall water and soil loss is further prevented.

The invention relates to a river sand stealing monitoring system and method based on machine vision. The method comprises the following steps: the step 110, establishing a regular ship database, registering and logging in by a legal ship holder, inputting related information into the regular ship database, correspondingly generating a random and non-repeated n-bit ship number as an ID of a ship after inputting is completed, and installing a noctilucent ship plate with the ship number on the ship; the step 120, acquiring sand field image information of m river segments by taking time t as a shooting time interval of a shooting module at an interval of threshold time T; the step 130, judging whether ships exist in the sand field of the river reach or not; and the step 131, judging whether the ship in the sand field is a regular ship or not, if yes, judging whether the ship has a sand stealing behavior or not according to the recorded sand mining amount, and if not, judging whether the ship has a sand stealing risk or not according to the ship staying time. According to the invention, the problems that a large amount of manpower cost is consumed by manual patrol and a relatively highdetection effect is difficult to achieve at night can be avoided.

The invention provides a river channel sand mining recognition method and device, electronic equipment and a storage medium. The method comprises the steps: determining a water system buffer area of ato-be-recognized region based on the water system data of the to-be-recognized region; based on the multi-source remote sensing data of the to-be-recognized area, determining the river channel type of each river channel in the water system buffer area; and if the riverway type of any riverway in the water system buffer area is a seasonal dry riverway, determining a riverway sand mining recognition result of the riverway based on an recognition method corresponding to the background type of the riverway. According to the riverway sand mining recognition method and device, the electronic equipment and the storage medium, the dynamic change characteristic of the seasonal riverway underlying surface is fully considered, different recognition methods are adopted for riverways of different background categories in a targeted mode for seasonal dry riverways, and then the riverway sand mining recognition accuracy is improved.

The invention discloses a river hydrological landform change key factor contribution degree analysis method and system, and the method comprises the steps: determining the total riverbed erosion and deposition amount delta S of a research reach according to the river topographic data obtained through two times of actual measurement; determining the input sediment amount Sq of the branch of the research river section and the natural erosion and deposition replenishment sediment amount S1 of the main stream riverbed; S2, determining the contribution degree of each factor for driving the riverbeddeformation of the research reach, selecting the guarantee rate P of dry water level and flow analysis, and determining the influence value and the contribution degree of each factor for driving thedry water level to change. Based on a sediment total conservation principle, the research reach is used as a whole. River topography, hydrological sediment of an adjacent hydrological station, seriesannual characteristic flow of the hydrological station, characteristic water level change, water level flow relation and the like are measured in a research time period; the contribution degree of key factors such as flow, sand mining and natural silt washing for driving the dry water level change is determined, and a new scheme is provided for analyzing the contribution degree of the key factorsof river hydrological and geomorphic change.