CN114492233B - Watershed water simulation method based on webGIS platform and considering comprehensive utilization requirements - Google Patents
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Abstract
A watershed water simulation method based on a webGIS platform and considering comprehensive utilization requirements comprises the following steps of: editing and managing the layers; step 2: generating a comprehensive scheduling calculation scheme; step 3: performing demonstration of watershed water simulation; step 4: performing disaster loss assessment; the invention aims to provide a watershed water simulation method considering comprehensive utilization requirements of reservoir dispatching, which is used for completing watershed water simulation of a dispatching scheme with comprehensive utilization requirements of multiple aspects such as cascade reservoir flood control, water resources, sediment, emergency, ecology and the like, realizing visual display and deduction of the simulation of a reservoir dispatching process, and facilitating decision making and dispatching scheme evaluation analysis of users.
Description
Technical Field
The invention belongs to the technical field of reservoir dispatching and watershed water simulation, and particularly relates to a watershed water simulation method based on a webGIS platform and considering comprehensive utilization requirements.
Background
The water resources are often characterized by regional nature resources, cyclic reproducibility, non-uniformity of space-time distribution and the like, are basic natural resources and strategic economic resources, are important basic stones for sustainable development of the economy and the maintenance of ecological balance, the comprehensive utilization requirements of the watershed water resources are often realized by planned control and application of a large reservoir, the water resources are regulated and controlled targets are further diversified along with the aggravation of human activity influence, the requirements of the watershed, especially the water resources, sediment, emergency, ecological and other aspects are often considered in the dispatching strategy of the large water conservancy junction, the dispatching decision is often required to repeatedly select among various water supply conditions, various constraint conditions and various objective functions so as to comprehensively evaluate the feasibility and the application effect of the dispatching scheme, thereby obtaining the dispatching scheme meeting the requirements of all aspects.
In recent years, information technology has been developed suddenly and rapidly, cloud computing, big data, the internet of things, mobile inquiry, GIS and other technologies are widely applied in intelligent watershed systems, especially webGL and virtual simulation technology are developed rapidly, webGIS formed by combining Web3D technology and GIS technology becomes an important direction of intelligent watershed visual development, and an important technical basis is constructed by the method.
With the improvement of various performance indexes of a computer and the improvement of a calculation method, more possibility is provided for calculating a complex scheduling scheme of an intelligent river basin, the traditional reservoir scheduling is only limited to a hub, and the calculation information of a step reservoir, an important flood control point and a key hydrologic station is added to enhance the river basin water simulation effect, so that the river basin water simulation of information such as key section water level, flow, sand conveying amount and the like is realized.
Disclosure of Invention
The invention aims to provide a watershed water simulation method considering comprehensive utilization requirements of reservoir dispatching, which is used for completing watershed water simulation of comprehensive utilization requirements of multiple aspects of cascade reservoir flood control, water resources, sediment, emergency, ecology and the like, realizing visual display and deduction of reservoir dispatching process simulation, and facilitating decision making and dispatching scheme evaluation analysis by users.
A watershed water simulation method based on a webGIS platform and considering comprehensive utilization requirements comprises the following steps:
step 1: according to the requirements of river basin management, combining with a webGIS platform technology, extracting map and elevation data with required precision according to the requirements of river basin water simulation, and laying out layer information to complete the display foundation of the river basin water simulation;
step 2: extracting and setting forecast water supply conditions of a hub or a cascade reservoir, setting various constraint conditions according to related control requirements of river basin management so as to generate a comprehensive dispatching calculation scheme, and storing dispatching results after the dispatching scheme calculation is completed;
step 3: extracting a comprehensive scheduling calculation scheme to carry out watershed water simulation deduction, wherein the watershed water simulation comprises watershed water simulation of a large scene of a full watershed and watershed water simulation of a fine scene, so that the watershed water simulation on time and space scales of various scheduling schemes is respectively realized, and characteristic sections on time and space are counted;
step 4: and calculating the submerged range and the submerged duration according to the flow process or the water level change process in the deduction process by combining the topographic data and the webGIS technology statistics, and then evaluating the loss of the corresponding submerged range and the submerged duration according to the economic model to obtain the final risk and the loss of the current scheduling scheme.
In step 1, when layer information is arranged and layer management is performed, the following steps are adopted:
2-1) constructing a basic layer according to the river basin management and the influence range, wherein the basic layer comprises river basin topography, boundaries, administrative division and river network water systems, and the contour of the basic layer is realized;
2-2) on the basis of the basic layer, according to the management professional scope of the intelligent watershed, deploying a thematic layer such as a hub, a water rain condition measuring station, water quality, water bloom, an earthquake table network, bank garage monitoring and the like;
2-3) deploying a custom layer on the base layer, wherein the custom layer comprises a three-dimensional model of each junction, a ground water pipe network, video monitoring points, vegetation coverage conditions and the like, and fusion with the base layer and dynamic data is realized.
In the step 2, the comprehensive dispatching calculation scheme comprises dispatching targets such as flood control, water resources, sediment, ecology, emergency and the like, the dispatching calculation targets are single-pivot joints and steps, and the calculation range comprises a junction station, a flood control point and a key hydrologic section range.
In step 2, when the scheduling scheme is calculated, a calculation model and algorithm are selected according to the requirements and characteristics of scheduling tasks, constraint conditions and initial conditions are set according to the comprehensive utilization requirements of reservoirs, and comprehensive scheduling calculation is completed, specifically, the following steps are adopted:
4-1) setting a scheduling period range and calculating a period granularity;
4-2) setting initial conditions for dispatching calculation, initial water levels of reservoirs and constraint conditions of stages;
4-3) selecting a proper scheduling target and a scheduling model for calculation according to the scheduling task requirements;
4-4) performing simulation calculation on control conditions of each period according to requirements and water balance principles;
4-5) saving the current scheduling scheme.
In the step 2, a scheduling scheme is generated by taking 5 aspects of flood control, water resources, sediment, ecology and emergency as scheduling targets;
5-1) flood control scheduling:
the basic principle of flood control scheduling is that according to the water supply condition and the characteristic condition of the reservoir, the water level process and the water discharge process of the water reservoir are calculated according to certain constraint and rule, the flood control scheduling rule mainly adopts the principle of ensuring the flood control safety of the dam, the minimum model of the reservoir maximum downward discharge amount takes the downstream as a protection object, and the target formula is as follows:
min F＝min{max(Q o,t )} t∈T (1)
wherein Q is o,t Reservoir let-down flow for the t-th period; t is a whole scheduling period set in the flood season;
the highest water level and lowest water level model in front of the reservoir dam takes the reservoir as a protection object, and the target formula is as follows:
min F＝min{max(Z u,t )} t∈T (2)
wherein Z is u,t The water level in front of the reservoir dam in the t-th period; t is a whole scheduling period set in the flood season;
5-2) scheduling water resources:
the water resource scheduling management is oriented to professionals and decision-making staff of water resource business, and provides a water resource scheduling management function, and mainly comprises module functions of water resource scheduling rule base management, water resource scheduling scheme calculation, scheme management, scheduling scheme evaluation and the like, wherein the scheduling rule management mainly comprises scheduling constraint management and rule clause management, the main aim is to realize the maximum utilization of water resources, the adopted algorithm comprises a plurality of optimization algorithms such as dynamic planning, successive optimization and the like, and the calculated achievement comprises a plurality of aims of realizing the maximum single-base generated energy or the maximum cascade generated energy and the like;
5-3) silt scheduling:
the sediment scheduling calculation is mainly used for providing a functional module for business personnel, such as sediment real-time monitoring and forecasting, sediment discharge scheduling in flood season Sha Feng, sediment reduction scheduling in reservoir tail in hydro-fluctuation period, scheduling result management, scheduling scheme evaluation and the like;
5-4) ecological scheduling:
the ecological dispatching mainly comprises a water temperature control target and a water bloom prevention and control target, in order to ensure that four large fishes have proper water temperature in the spawning period, a stop log gate of a power generation water inlet needs to be managed, a stop log gate opening and closing scheme is generated according to the water depth and water temperature rules, so that fish reproduction is ensured, the water bloom prevention and control is mainly realized by controlling and applying the water bloom in a river section area and a period in which water bloom is easy to generate, water level fluctuation or section flow change is realized, thereby preventing the occurrence of water bloom phenomenon, and the fluctuation relation rule of water bloom phenomenon prevention elements and water level and flow is obtained through historical data statistical analysis;
5-5) emergency dispatch:
the emergency dispatch mainly realizes the evacuation dispatch of ships in navigation management, along with the influence of economic activities, the river channel freight and passenger transport volume are further increased, the requirements of ships with different drainage volumes on the navigation channels are inconsistent, if proper navigation conditions are not available, the navigation can be carried out on the positions of ship locks and ship lifts, therefore, under the conditions, the emergency dispatch is required to be carried out, the types and the quantity of ships are analyzed according to the ship monitoring conditions, whether the hydraulic conditions of the navigation are required to meet the requirements or not is favorable for ship evacuation, the emergency dispatch is carried out, the requirement rule of the ship navigation on the hydraulic conditions is summarized and analyzed, the position and the congestion reasons of key navigation congestion sections are summarized and analyzed, and the time rule of the ships passing through the ship locks and the ship lifts is counted, so that the rapid evacuation of the ships is realized through the formation of better navigation conditions for the dispatching of large-scale reservoirs.
In the step 3, after completing a scheduling scheme formed by comprehensive scheduling calculation according to different scheduling targets and constraint conditions, carrying out visual simulation on a reservoir scheduling process by using a drainage basin water simulation scheduling scheme, and carrying out alarm display according to set boundary conditions, wherein the alarm conditions comprise hydrology crossing different boundaries;
the flow reaches different orders, the method is divided into a river basin water simulation of a river basin panoramic scene and a river basin water simulation of a junction refined scene, the river basin water simulation of the river basin panoramic scene supports a user to carry out flow and water level process deduction and characteristic value statistics extraction on key elements of a junction station, a key hydrologic station, a silt station and a water quality section of the whole river basin scene, and meanwhile, the out-of-limit river reach and the junction are subjected to high-brightness display and early warning prompt in a webGis platform according to preset judging standards, and the change of a step junction scheduling process in space is mainly shown;
the river basin water simulation of the fine scene mainly realizes the river basin water simulation of specific hinges, key hydrology or water quality sections, reflects the time change of the scheduling process, realizes the simulation of the scheduling water flow process in the small scene, simultaneously extracts the characteristic time sections, and performs key display according to the characteristic elements such as the maximum water level, the maximum flow and the like.
In step 4, according to the evolution condition of time and space of the comprehensive dispatching calculation scheme, calculating the flooding range and duration by combining with the topographic data statistics of the webGIS platform, and calculating the drainage basin flooding loss economy of the dispatching scheme according to the formula (3);
wherein Z is j For submerged elevation range segmentation, m elevation ranges are divided; t (T) i For a flooding duration of a certain elevation range, divided into n time period ranges, f (T i ,Z j ) For the economic investigation curve of the river basin area, an average submerged economic loss level can be inquired according to the submerged time and the elevation range;
and (3) carrying out statistics and calculation on the inundation duration and inundation range of each area by using a webGIS platform, and realizing inundation loss analysis and evaluation of a specific scheme according to economic scheduling data in the drainage basin area so as to assist a user in carrying out decision analysis of each scheduling scheme.
Compared with the prior art, the invention has the following technical effects:
1) The invention can complete watershed water simulation with comprehensive utilization requirements in various aspects of flood control, water resources, sediment, emergency, ecology and the like of the cascade reservoir, realize visual display and deduction of reservoir dispatching process simulation, and facilitate decision making and dispatching scheme evaluation analysis by users. The application range of the method is that on one hand, the river basin water simulation of a large scene is realized, index change conditions of different elements of a plurality of objects such as reservoirs, flood control points, key hydrologic stations and the like in the river basin are simulated on a webGIS plan, the change of each key simulation element in space is reflected, and the early warning, the submerged area evaluation and the disaster loss evaluation of the simulation scheduling process of the large scene are realized on the basis; on the other hand, the simulation of the watershed water of the small scene is realized, the simulation of key element changes in time of each junction and key section is realized, and the simulation and dynamic demonstration of the scene elements are realized in a refined manner;
2) The existing watershed water simulation is usually carried out by adopting a physical model, the investment is large, the construction period is long, the condition of the underlying condition of the watershed is often changed along with the influence of human activities, the physical model cannot quickly realize the following change, and meanwhile, a plurality of scheduling scenes often belong to theoretical conditions or extreme conditions.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic diagram of the functional composition of the watershed water simulation in the present invention;
FIG. 2 is a flow chart of a watershed water simulation function in the present invention;
FIG. 3 is a diagram of a layer management logic relationship;
FIG. 4 is a diagram of a scheduling computation model structure;
Detailed Description
A watershed water simulation method based on a webGIS platform and considering comprehensive utilization requirements comprises the following steps:
step 1: according to the requirements of the watershed management, combining with the webGIS platform technology, extracting map and elevation data with required precision according to the requirements of the watershed water simulation, and completing the display foundation of the watershed water simulation, wherein the management information of each map layer to be constructed is shown in figure 3;
step 2: extracting and setting forecast water supply conditions of a hub or step reservoir, selecting control targets of the reservoir and the step, setting constraint processes such as water level, flow, output process and the like, completing calculation of a scheduling scheme, and storing results after simulation adjustment calculation;
step 3: extracting a comprehensive scheduling calculation scheme to carry out watershed water simulation deduction, wherein the watershed water simulation comprises watershed water simulation of a large scene of a full watershed and watershed water simulation of a fine scene, so that the watershed water simulation on time and space scales of various scheduling schemes is respectively realized, and characteristic sections on time and space are counted;
step 4: and calculating the submerged range and the submerged duration according to the flow process or the water level change process in the deduction process by combining the topographic data and the webGIS technology statistics, and then evaluating the loss of the corresponding submerged range and the submerged duration according to the economic model to obtain the final risk and the loss of the current scheduling scheme.
In step 1, the layer management takes the following steps:
step 1), constructing a basic layer according to river basin management and influence ranges, wherein the basic layer comprises river basin topography, boundaries, administrative division and river network water systems, and the contour of the basic layer is realized;
step 2) on the basis of the basic layer, according to the management professional scope of the intelligent watershed, arranging a thematic layer such as a hub, a water rain station, water quality, water bloom, an earthquake table network, bank library monitoring and the like;
step 3) deploying a custom layer on the base layer, wherein the custom layer comprises a three-dimensional model of each hinge, a ground water pipe network, video monitoring points, vegetation coverage conditions and the like, so as to realize fusion with the base layer and dynamic data;
in the step 2, the dispatching scheme calculates dispatching targets including flood control, water resources, sediment, ecology, emergency and the like, the dispatching calculated targets have single hub and steps, and the calculation range comprises hub stations, flood control points and key hydrological section ranges;
in step 2, the key point of the comprehensive dispatching calculation is that a calculation model and an algorithm are selected according to the requirements and characteristics of dispatching tasks, constraint conditions and initial conditions are set according to the comprehensive utilization requirements of reservoirs, and the completion of the comprehensive dispatching calculation can be divided into the following steps:
step 1) setting a scheduling period range and calculating period granularity;
step 2) setting initial conditions for dispatching calculation, initial water levels of reservoirs and constraint conditions of stages;
step 3) selecting a proper scheduling target and a scheduling model for calculation according to the scheduling task requirements;
step 4) performing simulation calculation on control conditions of each period according to requirements and a water balance principle;
step 5) saving the current scheduling scheme.
In the step 2, the scheduling scheme is manufactured according to the scheduling task and the reservoir control application requirement, and the scheduling scheme can be divided into 5 major scheduling targets of flood control, water resource, sediment, ecology and emergency according to the scheduling targets;
(1) Flood control scheduling:
the basic principle of flood control scheduling is to calculate the water level process and the water discharge process of a water reservoir according to the water supply condition and the characteristic condition of a reservoir and certain constraint and rules, and the flood control scheduling rules mainly adopt the principle of ensuring the flood control safety of a dam to carry out flood control calculation. The minimum model of reservoir maximum drainage takes the downstream as a protection object, and the target formula is as follows:
min F＝min{max(Q o,t )} t∈T (1)
wherein Q is o,t Reservoir let-down flow for the t-th period; t is the whole scheduling period set in the flood season.
The highest water level and lowest water level model in front of the reservoir dam takes the reservoir as a protection object, and the target formula is as follows:
min F＝min{max(Z u,t )} t∈T (2)
wherein Z is u,t The water level in front of the reservoir dam in the t-th period; t is the whole scheduling period set in the flood season.
(2) And (3) water resource scheduling:
the water resource scheduling management is oriented to professionals and decision-making personnel of water resource business, and provides a water resource scheduling management function, and the water resource scheduling management system mainly comprises module functions of water resource scheduling rule base management, water resource scheduling scheme calculation, scheme management, scheduling scheme evaluation and the like, wherein the scheduling rule management mainly comprises scheduling constraint management and rule term management, the main aim is to realize the maximum utilization of water resources, the adopted algorithm comprises a plurality of optimization algorithms such as dynamic planning, successive optimization and the like, and the calculated achievement comprises a plurality of aims of realizing the maximum single-base generated energy or the maximum cascade generated energy and the like.
(3) And (3) sediment scheduling:
the sediment scheduling calculation is mainly used for providing a functional module for business personnel, such as sediment real-time monitoring and forecasting, sediment discharge scheduling in flood season Sha Feng, sediment reduction scheduling in reservoir tail in hydro-fluctuation period, scheduling result management, scheduling scheme evaluation and the like.
(4) Ecological scheduling:
the ecological dispatching mainly comprises a water temperature control target and a water bloom prevention and control target, and in order to ensure that four large fishes have proper water temperature in the spawning period, a stop log door of a power generation water inlet needs to be managed, and a stop log door opening and closing scheme is generated according to the water depth and water temperature rules, so that fish reproduction is ensured. The water bloom prevention and control is mainly to control and apply the water reservoir accumulation and discharge in a river reach area and period in which the water bloom is easy to generate, so as to realize the water level fluctuation or the section flow change, thereby realizing the prevention of the occurrence of the water bloom phenomenon, and the fluctuation relation rule of the water bloom phenomenon prevention elements and the water level and flow is obtained through the statistical analysis of historical data.
(5) Emergency dispatch:
the emergency dispatch mainly realizes the evacuation dispatch of boats and ships in navigation management, along with the influence of economic activity, river course freight volume and passenger traffic volume further increase, and the boats and ships of different displacement are inconsistent to the requirement of channel, if do not have suitable shipping condition, the navigation can be in the jam of navigation department journey, consequently under this condition, need develop emergency dispatch. According to the ship monitoring condition, analyzing the type and the number of the ship, and checking whether the hydraulic conditions of shipping meet the requirements or not is favorable for ship evacuation. The development of emergency dispatch is to summarize and analyze the requirement rule of ship navigation on hydraulic conditions, summarize and analyze the position and congestion reasons of key shipping congestion sections, and count the time rule of ship passing through a ship lock and a ship lift, so that good navigation conditions are formed by dispatching a large reservoir, and quick evacuation of the ship is realized.
In the step 3, after a scheduling scheme formed by comprehensive scheduling calculation is completed according to different scheduling targets and constraint conditions, the drainage basin water simulation calls the scheduling scheme to carry out visual simulation on a reservoir scheduling process, alarm display is carried out according to set boundary conditions, the alarm conditions comprise that hydrology passes through different boundaries, and the flow reaches different orders, and the method is characterized in that the drainage basin water simulation of the drainage basin panoramic scene and the drainage basin water simulation of the junction refined scene are divided into the drainage basin water simulation of the drainage basin panoramic scene, the drainage basin water simulation of the drainage basin panoramic scene supports a user to carry out flow and water level process deduction and feature value statistics extraction on key elements of a hub station, a key hydrologic station, a silt station and a water quality section of the whole drainage basin scene, and meanwhile high-brightness display and early warning prompt are realized on out-limited river segments and junctions according to preset judging standards in a webGis platform, and the change of the junction scheduling process in space is mainly shown;
the river basin water simulation of the fine scene mainly realizes the river basin water simulation of specific hinges, key hydrology or water quality sections, reflects the time change of the scheduling process, realizes the simulation of the scheduling water flow process in the small scene, simultaneously extracts the characteristic time sections, and performs key display according to the characteristic elements such as the maximum water level, the maximum flow and the like.
In step 4, according to the evolution condition of time and space of the comprehensive dispatching calculation scheme, calculating the flooding range and duration by combining with the topographic data statistics of the webGIS platform, and calculating the drainage basin flooding loss economy of the dispatching scheme according to the formula (3).
Wherein Z is j For submerged elevation range segmentation, m elevation ranges are divided; t (T) i For a flooding duration of a certain elevation range, divided into n time period ranges, f (T i ,Z j ) For the drainage basin area economic investigation curve, an average inundation economic loss level can be queried according to inundation time and elevation range.
The method is characterized in that a webGIS platform is used for counting and calculating the inundation duration and inundation range of each area, inundation loss analysis and evaluation of a specific scheme are realized according to economic scheduling data in a drainage basin area, and a user is assisted in decision analysis of each scheduling scheme.
Claims (5)
1. A watershed water simulation method based on a webGIS platform and considering comprehensive utilization requirements is characterized by comprising the following steps:
step 1: according to the requirements of river basin management, combining with a webGIS platform technology, extracting map and elevation data with required precision according to the requirements of river basin water simulation, and laying out layer information to complete the display foundation of the river basin water simulation;
step 2: extracting and setting forecast water supply conditions of a hub or a cascade reservoir, setting various constraint conditions according to related control requirements of river basin management so as to generate a comprehensive dispatching calculation scheme, and storing dispatching results after the dispatching scheme calculation is completed;
step 3: extracting a comprehensive scheduling calculation scheme to carry out watershed water simulation deduction, wherein the watershed water simulation comprises watershed water simulation of a large scene of a full watershed and watershed water simulation of a fine scene, so that the watershed water simulation on time and space scales of various scheduling schemes is respectively realized, and characteristic sections on time and space are counted;
step 4: calculating a submerged range and a submerged duration according to a flow process or a water level change process in the deduction process by combining with topographic data and webGIS technology statistics, and then evaluating losses of the corresponding submerged range and submerged duration according to an economic model to obtain final risks and losses of a current scheduling scheme;
in the step 2, a scheduling scheme is generated by taking 5 aspects of flood control, water resources, sediment, ecology and emergency as scheduling targets; the method comprises the following steps:
flood control scheduling:
the basic principle of flood control scheduling is that according to the water supply condition and the characteristic condition of the reservoir, the water level process and the water discharge process of the water reservoir are calculated according to certain constraint and rule, the flood control scheduling rule mainly adopts the principle of ensuring the flood control safety of the dam, the minimum model of the reservoir maximum downward discharge amount takes the downstream as a protection object, and the target formula is as follows:
minF＝min{max(Q o,t )} t∈T (1)
wherein Q is o,t Reservoir let-down flow for the t-th period; t is a whole scheduling period set in the flood season;
the highest water level and lowest water level model in front of the reservoir dam takes the reservoir as a protection object, and the target formula is as follows:
minF＝min{max(Z u,t )} t∈T (2)
wherein Z is u,t The water level in front of the reservoir dam in the t-th period; t is a whole scheduling period set in the flood season;
and (3) water resource scheduling:
the water resource scheduling management is oriented to professionals and decision-making staff of water resource business, and provides water resource scheduling management functions, and mainly comprises water resource scheduling rule base management, water resource scheduling scheme calculation, scheme management and scheduling scheme evaluation, wherein the scheduling rule management mainly comprises scheduling constraint management and rule clause management, the main aim is to realize the maximum utilization of water resources, the adopted algorithm comprises dynamic planning and successive optimization algorithm, and the calculated result comprises the realization of the maximum single-base generated energy or the maximum cascade generated energy;
and (3) sediment scheduling:
the sediment scheduling calculation mainly provides the functional modules for the business personnel for sediment real-time monitoring and forecasting, the sediment discharge scheduling in the flood season Sha Feng, the sediment reduction scheduling in the reservoir tail in the hydro-fluctuation period, the scheduling result management and the scheduling scheme evaluation;
ecological scheduling:
the ecological dispatching mainly comprises a water temperature control target and a water bloom prevention and control target, in order to ensure that four large fishes have proper water temperature in the spawning period, a stop log gate of a power generation water inlet needs to be managed, a stop log gate opening and closing scheme is generated according to the water depth and water temperature rules, so that fish reproduction is ensured, the water bloom prevention and control is mainly realized by controlling and applying the water bloom in a river section area and a period in which water bloom is easy to generate, water level fluctuation or section flow change is realized, thereby preventing the occurrence of water bloom phenomenon, and the fluctuation relation rule of water bloom phenomenon prevention elements and water level and flow is obtained through historical data statistical analysis;
emergency dispatch:
the emergency dispatch mainly realizes the evacuation dispatch of the ship in the navigation management, along with the influence of economic activities, the cargo capacity and the passenger capacity of the river channel are further increased, the requirements of the ship with different drainage capacities on the navigation channel are inconsistent, if proper navigation conditions are not available, the navigation can be carried out on the ship lock and the ship lift, so that under the conditions, the emergency dispatch is required to be carried out, the type and the quantity of the ship are analyzed according to the ship monitoring condition, whether the hydraulic conditions of the navigation are required to meet the requirements or not are favorable for the evacuation of the ship, the emergency dispatch is carried out, the requirement rule of the ship navigation on the hydraulic conditions is summarized and analyzed, the position and the congestion cause of the key navigation congestion section are summarized and analyzed, and the time rule of the ship passing through the ship lock and the ship lift is counted, so that the ship is rapidly evacuated through the large-scale reservoir dispatching to form better navigation conditions;
in step 4, according to the evolution condition of time and space of the comprehensive dispatching calculation scheme, calculating the flooding range and duration by combining with the topographic data statistics of the webGIS platform, and calculating the drainage basin flooding loss economy of the dispatching scheme according to the formula (3);
wherein Z is j For submerged elevation range segmentation, m elevation ranges are divided; t (T) i For a flooding duration of a certain elevation range, divided into n time period ranges, f (T i ,Z j ) Inquiring an average inundation economic loss level for the economic investigation curve of the river basin area according to inundation time and an elevation range;
and (3) carrying out statistics and calculation on the inundation duration and inundation range of each area by using a webGIS platform, and carrying out inundation loss analysis and evaluation on the implementation scheme according to the economic dispatch data in the drainage basin area to assist a user in carrying out decision analysis on each dispatch scheme.
2. The method according to claim 1, wherein in step 1, when layer information is arranged and layer management is performed, the following steps are taken:
1-1) constructing a basic layer according to river basin management and influence ranges, wherein the basic layer comprises river basin topography, boundaries, administrative division and river network water systems, and the contour of the basic layer is realized;
1-2) on the basis of the basic layers, according to the management professional scope of the intelligent watershed, the thematic layers are monitored by a hub, a water rain condition measuring station, water quality, water bloom, an earthquake table network and a bank;
1-3) deploying a custom layer on the base layer, wherein the custom layer comprises a three-dimensional model of each junction, a groundwater pipe network, video monitoring points and vegetation coverage conditions, and fusion with the base layer and dynamic data is realized.
3. The method according to claim 1, wherein in step 2, the comprehensive scheduling calculation scheme includes the scheduling targets of flood control, water resources, sediment, ecology and emergency, the objects of the scheduling calculation are single pivots and steps, and the calculation range includes hub stations, flood control points and key hydrologic section ranges.
4. The method according to claim 1, wherein in step 2, when performing the calculation of the scheduling scheme, a calculation model and algorithm are selected according to the requirements and characteristics of the scheduling task, constraint conditions and initial conditions are set according to the comprehensive utilization requirement of the reservoir, and the comprehensive scheduling calculation is completed by adopting the following steps:
2-1) setting a scheduling period range and calculating a period granularity;
2-2) setting initial conditions for dispatching calculation, initial water levels of reservoirs and constraint conditions of stages;
2-3) selecting a proper scheduling target and a scheduling model for calculation according to the scheduling task requirements;
2-4) performing simulation calculation on control conditions of each period according to requirements and water balance principles;
2-5) saving the current scheduling scheme.
5. The method according to one of claims 1 to 4, wherein in step 3, after completing a scheduling scheme formed by comprehensive scheduling calculation according to different scheduling targets and constraint conditions, the drainage basin water simulation calls the scheduling scheme to perform visual simulation on the reservoir scheduling process, and performs alarm display according to set boundary conditions, wherein the alarm conditions comprise hydrology crossing different boundaries;
the flow reaches different orders, the method is divided into a river basin water simulation of a river basin panoramic scene and a river basin water simulation of a junction refined scene, the river basin water simulation of the river basin panoramic scene supports a user to carry out flow and water level process deduction and characteristic value statistics extraction on key elements of a junction station, a key hydrologic station, a silt station and a water quality section of the whole river basin scene, and meanwhile, the out-of-limit river reach and the junction are subjected to high-brightness display and early warning prompt in a webGis platform according to preset judging standards, and the change of a step junction scheduling process in space is mainly shown;
the river basin water simulation of the fine scene mainly realizes the river basin water simulation of specific hinges, key hydrology or water quality sections, reflects the time change of the scheduling process, realizes the simulation of the scheduling water flow process in the small scene, simultaneously extracts the characteristic time sections, and performs key display according to the characteristic elements with the maximum water level and flow.
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