LU503735B1 - Balanced optimal allocation method of water and soil resources by using groundwater level regulation - Google Patents
Balanced optimal allocation method of water and soil resources by using groundwater level regulation Download PDFInfo
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- LU503735B1 LU503735B1 LU503735A LU503735A LU503735B1 LU 503735 B1 LU503735 B1 LU 503735B1 LU 503735 A LU503735 A LU 503735A LU 503735 A LU503735 A LU 503735A LU 503735 B1 LU503735 B1 LU 503735B1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 239000002689 soil Substances 0.000 title claims abstract description 59
- 239000003673 groundwater Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- 238000004088 simulation Methods 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims description 8
- 238000005457 optimization Methods 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 6
- 238000012821 model calculation Methods 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims 2
- 238000009499 grossing Methods 0.000 claims 1
- 238000010606 normalization Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 239000002352 surface water Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The invention provides a balanced optimal allocation method of water and soil resources by using groundwater level regulation, including: constructing a water level prediction model according to the historical water level database of the area to be regulated; predicting the water supply and demand information in the target years; determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information; inputting the optimized result into a preset water level numerical simulation model to obtain the water level information; adjusting the water supply and demand of the area to be regulated according to the water level information. The invention realizes the regional balance and time balance of water and soil resources, gives consideration to regional economic, social and ecological benefits, and comprehensively achieves the target of balanced and optimized regulation of regional water and soil resources.
Description
Balanced optimal allocation method of water and soil resources by using groundwater level regulation
The invention relates to the technical field of optimal allocation of water and soil resources, and in particular to a balanced optimal allocation method of water and soil resources by using groundwater level regulation.
Agricultural water and soil resources are the basic resources of regional economic development, but also the main restrictive factor of grain production, and its reasonable regulation is of great significance to realize the sustainable development of agriculture. Optimal allocation of agricultural water and soil resources is the key to solve the unreasonable allocation of water and soil resources in irrigation areas.
At present, the balanced optimal allocation of water and soil resources is controlled by groundwater in the prior art, and the control results are optimized only by numerical simulation models of surface water and groundwater, which can not further control and optimize water and soil resources.
In order to overcome the shortcomings of the prior art, the invention aims to provide a balanced optimal allocation method of water and soil resources by using groundwater level regulation.
In order to achieve the above objectives, the present invention provides the following scheme.
The invention relates to a balanced optimal allocation method of water and soil resources by using groundwater level regulation, including: constructing a water level prediction model based on PSO-SVR-LSTM according to the historical water level database of the area to be regulated, predicting the water supply and demand information in the target years through the water level prediction model based on PSO-SVR-LSTM; determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information based on the interaction law of water and soil resources; inputting the optimized result into a preset water level numerical simulation model to obtain the water level information; adjusting the water supply and demand of the area to be regulated according to the water level information. LUS03735
Preferably, the water level information includes surface water data and groundwater data.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects. 1) The invention realizes the regional balance and time balance of water and soil resources, gives consideration to the regional economic, social and ecological benefits, and comprehensively achieves the target of balanced and optimized regulation of regional water and soil resources. 2) The invention considers the mutual feedback of water and soil resources, and can provide technical support for comprehensive basin management and optimal allocation of water and soil resources more accurately.
In order to explain the embodiments of the present invention or the technical scheme in the prior art more clearly, the figures needed in the embodiments will be briefly introduced below.
Obviously, the figures in the following description are only some embodiments of the present invention. For ordinary people in the field, other figures can be obtained according to these figures without paying creative labor.
Fig. 1 is a flowchart of a method provided by an embodiment of the present invention.
In the following, the technical scheme in the embodiment of the invention will be clearly and completely described with reference to the attached figures. Obviously, the described embodiment is only a part of the embodiment of the invention, but not the whole embodiment.
Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative labor belong to the scope of protection of the present invention.
In order to make the above objectives, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail with the attached figures and specific embodiments.
Fig. 1 is a flowchart of a method provided by an embodiment of the present invention. As shown in Fig. 1, the present invention provides a balanced optimal allocation method of water and soil resources by using groundwater level regulation, including:
Step 100: constructing a water level prediction model based on PSO-SVR-LSTM according to the historical water level database of the area to be regulated,
Step 200: predicting the water supply and demand information in the target years through the water level prediction model based on PSO-SVR-LSTM; LUS03735
Step 300: determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information based on the interaction law of water and soil resources;
Step 400: inputting the optimized result into a preset water level numerical simulation model to obtain the water level information;
Step 500: adjusting the water supply and demand of the area to be regulated according to the water level information.
Further, in this embodiment, considering the different types of hydrological data in the historical water level database, in order to improve the convergence speed and calculation accuracy of the model, it is necessary to normalize the maximum and minimum values of the sample data, that is: y = (Xi—Xi min) (Xi max Xi min) where Xjmax represents the maximum value of variable 1; X; min represents the minimum value of the variable i.
Preferably, determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information based on the interaction law of water and soil resources, including: calculating the surface runoff and precipitation of each grid of the area to be regulated in different time scales by using the optimal allocation model of water and soil resources and the information of water supply and demand information, so as to obtain the runoff coefficient in different time periods in the space of the area to be regulated; the time scale mainly describes the characteristics of groundwater hydrological process changes and the information resolution of vegetation ecosystem changes in a certain period of time. The groundwater hydrological process mainly describes the changes of groundwater water flow, water level and water quality with time. calculating and counting evapotranspiration of each grid of the area to be regulated in different time scales by using the water and soil resources optimal allocation model calculation and the water supply and demand information, obtaining the space distribution of net primary productivity in the basin by using the net primary productivity quota of different land use types and the space distribution of land use, and finally comparing the space NPP with ET to obtain the space distribution of NPP/ET in different time scales; taking runoff coefficient as an index to study the influence of land resources on water resources, NPP/ET as an index to study the influence of water resources on land resources,
analyzing the runoff coefficient and the space distribution, and analyzing the mutual feedback 5503735 water and soil resources from two perspectives of time and space; adjusting the parameters in the optimal allocation model of water and soil resources according to the mutual feedback, so that the optimal allocation model of water and soil resources outputs the optimized results based on optimal space equilibrium optimization and time equilibrium optimization.
Specifically, in this embodiment, the space optimal allocation model of water and soil resources of the area to be regulated is established in advance. Firstly, the balance degree of water and soil resources of the area to be regulated is determined to be the maximum, and the sum of squares of water shortage rates of each hydrographic computation unit is determined to be the minimum, which is also taken as the objective function of the space optimal allocation model of water and soil resources of the area to be regulated. Then the constraint conditions of the space optimal allocation model of water and soil resources of the area to be regulated are determined; the weights of the two objective functions are determined and solved to obtain the optimized result of space balance.
Further, in this embodiment, the time optimal allocation model of water and soil resources of the area to be regulated is established through the optimized results of space balance; then, for each hydrographic computation unit, the sum of squares of the relative water shortage rate between months with regulation demand is minimized as the objective function of the time optimal allocation model of water and soil resources of the area to be regulated; the constraint conditions of the time optimal allocation model of water and soil resources of the area to be regulated are determined; the objective function is solved to obtain the optimized result of time balance.
Furthermore, the constraint conditions of the space optimal allocation model of water and soil resources in this embodiment include the constraints of water supply, water demand and water diversion capacity of main canals. Specifically, the constraint conditions can be selected according to the actual situation of the area to be regulated. The constraint conditions of the time optimal allocation model of water and soil resources include the surface water supply and groundwater supply of each hydrographic computation unit in the optimized results of space balance. Meanwhile, other constraint conditions can be set, such as the monthly water supply of each hydrographic computation unit is less than the water demand.
Preferably, adjusting the water supply and demand of the area to be regulated according to the water level information, including: judging whether the water level information reaches a preset water level optimization target, and if so, outputting the water level information; if not, adjusting the water supply amoufip 903735 and return to the step of "determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information based on the interaction law of water and soil resources" until the water level information reaches the 5 water level optimization target.
The invention has the following beneficial effects. 1) The invention realizes the regional balance and time balance of water and soil resources, gives consideration to the regional economic, social and ecological benefits, and comprehensively achieves the target of balanced and optimized regulation of regional water and soil resources. 2) The invention considers the mutual feedback of water and soil resources, and can provide technical support for comprehensive basin management and optimal allocation of water and soil resources more accurately.
Each embodiment in this specification is described in a progressive way, and each embodiment focuses on the differences from other embodiments, so it is only necessary to refer to the same and similar parts between each embodiment.
In the invention, specific embodiments are used to explain the principle and implementation of the invention, and the description of the above embodiments is only used to help understand the method and its core idea of the invention, meanwhile, for ordinary technicians in this field, according to the idea of the invention, there will be changes in the specific implementation and application scope. In summary, the contents of this specification should not be construed as limiting the present invention
Claims (4)
1. À balanced optimal allocation method of water and soil resources by using groundwater level regulation, comprising: constructing a water level prediction model based on PSO-SVR-LSTM according to the historical water level database of the area to be regulated, predicting the water supply and demand information in the target years through the water level prediction model based on PSO-SVR-LSTM; determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information based on the interaction law of water and soil resources; inputting the optimized result into a preset water level numerical simulation model to obtain the water level information: adjusting the water supply and demand of the area to be regulated according to the water level information.
2. The balanced optimal allocation method of water and soil resources by using groundwater level regulation according to claim 1, characterized in that constructing a water level prediction model based on PSO-SVR-LSTM according to the historical water level database of the area to be regulated, comprising: constructing the historical water level database according to the obtained hydrological information; preprocessing the data in the historical water level database to obtain the preprocessed data; constructing an LSTM prediction model and an SVR prediction model respectively according to the preprocessed data based on particle swarm optimization; performing iterative training according to the LSTM prediction model and the SVR prediction model, and adjusting the parameters of the LSTM prediction model and the SVR prediction model according to the training result to obtain the water level prediction model.
3. The balanced optimal allocation method of water and soil resources by using groundwater level regulation according to claim 2, characterized in that data preprocessing the data in the historical water level database to obtain the preprocessed data, comprising:
filling the missing values of data in the historical water level database to obtain the filled 203735 data based on a mean smoothing method; carrying out data normalization processing on the filled data to obtain the preprocessed data.
4. The balanced optimal allocation method of water and soil resources by using groundwater level regulation according to claim 1, characterized in that determining the optimized result according to the preset optimal allocation model of water and soil resources and the water supply and demand information based on the interaction law of water and soil resources, comprising: calculating the surface runoff and precipitation of each grid of the area to be regulated in different time scales by using the optimal allocation model of water and soil resources and the information of water supply and demand information, so as to obtain the runoff coefficient in different time periods in the space of the area to be regulated; calculating and counting evapotranspiration of each grid of the area to be regulated in different time scales by using the water and soil resources optimal allocation model calculation and the water supply and demand information, obtaining the space distribution of net primary productivity in the basin by using the net primary productivity quota of different land use types and the space distribution of land use, and finally comparing the space NPP with ET to obtain the space distribution of NPP/ET in different time scales; taking runoff coefficient as an index to study the influence of land resources on water resources, NPP/ET as an index to study the influence of water resources on land resources, analyzing the runoff coefficient and the space distribution, and analyzing the mutual feedback of water and soil resources from two perspectives of time and space; adjusting the parameters in the optimal allocation model of water and soil resources according to the mutual feedback, so that the optimal allocation model of water and soil resources outputs the optimized results based on optimal space equilibrium optimization and time equilibrium optimization.
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| LU503735A LU503735B1 (en) | 2023-03-25 | 2023-03-25 | Balanced optimal allocation method of water and soil resources by using groundwater level regulation |
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| LU503735A LU503735B1 (en) | 2023-03-25 | 2023-03-25 | Balanced optimal allocation method of water and soil resources by using groundwater level regulation |
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