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CN112561127A - Underground water pressure mining target-based alternative water source contribution rate balance analysis system - Google Patents

Underground water pressure mining target-based alternative water source contribution rate balance analysis system Download PDF

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CN112561127A
CN112561127A CN202011353327.9A CN202011353327A CN112561127A CN 112561127 A CN112561127 A CN 112561127A CN 202011353327 A CN202011353327 A CN 202011353327A CN 112561127 A CN112561127 A CN 112561127A
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贺华翔
游进军
闫腾
林鹏飞
王婷
安强
高娟娟
陈非
马真臻
卢瑶
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China Institute of Water Resources and Hydropower Research
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Abstract

本发明公开了基于地下水压采目标的替代水源贡献率平衡分析系统，包括：第一模块，用来预测各组合方案对应的需水量及确定地下水压采目标；第二模块，用来接收第一模块输出的需水量和地下水压采目标，并利用GAMS优化模块获得优化后各组合方案对应的供水量和缺水量；第三模块，用来接收第二模块输出的供水量和缺水量，并判断各组合方案下区域单元是否缺水，根据缺水情景计算区域单元的贡献率。本发明引入虚拟水源，可将多途径对地下水供水变化量的影响程度进行展示。本发明简便易行，将复杂的多途径替代水源置换关系凝练成范式，便于决策者识别各个途径对地下水压采的作用规律，为水量分配等实践管理工作提供决策支持。The invention discloses a balance analysis system for the contribution rate of alternative water sources based on groundwater pressure extraction targets, comprising: a first module for predicting the water demand corresponding to each combination scheme and determining groundwater pressure extraction targets; a second module for receiving the first The water demand and groundwater pressure extraction target output by the module, and use the GAMS optimization module to obtain the water supply and water shortage corresponding to each combination scheme after optimization; the third module is used to receive the water supply and water shortage output by the second module, And judge whether the regional unit is short of water under each combination scheme, and calculate the contribution rate of the regional unit according to the water shortage scenario. The present invention introduces a virtual water source, which can display the degree of influence of multiple channels on the variation of groundwater supply. The method is simple and easy to implement, and condenses the complex multi-channel alternative water source replacement relationship into a paradigm, which is convenient for decision makers to identify the law of action of each channel on groundwater pressure extraction, and provides decision support for practical management work such as water allocation.

Description

Underground water pressure mining target-based alternative water source contribution rate balance analysis system
Technical Field
The invention belongs to the technical field of water resource optimization configuration, and particularly relates to a system for balancing and analyzing contribution rate of a substitute water source based on an underground water pressure mining target.
Background
The existing alternative water source contribution rate balance analysis system focuses on expressing the influence degree on the groundwater supply variation from a single way of saving or increasing water. On one hand, water saving is usually reflected at a water demand end of balance analysis, and elements such as surface water storage capacity, underground water exploitation capacity, regenerated water utilization capacity, diversion project distribution indexes and the like are usually reflected at a supply end of balance analysis, so that the contribution degrees of water saving and water increasing are difficult to compare at the same level; on the other hand, water conservation and water increase have complex interaction relation among water users, and the complexity of the interaction relation is difficult to be clarified only from the level of the total quantity of the water supply change.
Disclosure of Invention
Aiming at the serious problem of underground water super-mining in North China, the nation provides comprehensive treatment measures of 'one reduction and one increase', and the significance of saving water (namely 'one reduction') and increasing multi-channel water source supply (namely 'one increase') as important ways for realizing underground water pressure mining is great. Considering the spatial imbalance of the regional underground water pressure mining target and the accessibility of measures such as water conservation and water increase, the invention provides a system for analyzing the contribution rate balance of the alternative water source based on the underground water pressure mining target.
In the existing balance analysis of the contribution rate of the alternative water source, the defects of contribution rate of water saving and water increasing to underground water pressure mining cannot be described at the same time, and the invention takes water shortage as a virtual water source for balancing the gap between the water saving, water increasing and underground water supply variation; by improving an optimized alternative water source contribution rate balance analysis system, the alternative water source replacement relation (the replacement relation is described by the contribution rate) between the water saving amount, the water increasing amount, the water shortage amount and the groundwater supply amount (the groundwater supply amount is the difference between the actual mining amount and the groundwater pressure mining target) under different scenes in the region is quantitatively analyzed, and reference is provided for water resource management work such as water distribution.
The invention provides a system for analyzing the contribution rate balance of a substitute water source based on an underground water pressure mining target, which comprises:
the first module is used for predicting the water demand corresponding to each combination scheme and determining an underground water pressure mining target;
the combination scheme comprises a scheme 1, a scheme 2 and a scheme 3, and is defined as follows:
scheme 1 refers to: the current annual underground water exploitation amount is taken as water supply constraint, and the general water saving is taken as water demand input;
scheme 2 refers to: the current annual underground water exploitation amount is used as water supply restriction, and the reinforced water saving is used as water demand input;
scheme 3 refers to: the situation scheme that the underground water mining amount based on the underground water pressure mining target is taken as water supply restriction, and the strengthened water saving is taken as water demand input;
the second module is used for receiving the water demand and the underground water pressure collection target output by the first module and obtaining the water supply amount and the water shortage amount corresponding to each optimized combination scheme by using the GAMS optimization module;
the GAMS optimization module calculates the water shortage by adopting an objective function shown in formula (1), constraint conditions shown in formulas (2) to (3) and formula (4):
Figure RE-GDA0002923607680000021
Gk,i≤LIMITk,i (2)
Figure RE-GDA0002923607680000022
Figure RE-GDA0002923607680000023
wherein t represents a time period number, and tl is the total time period number; m represents the number of the alternative water source types, and ml represents the total number of the alternative water source types; i represents different area units, and il is the total number of the area units; k denotes a combination scheme number;
δi,m,trepresenting the marginal benefit of the water supply of the ith unit mth type water source in the tth time period; sk,i,mIndicates the water supply amount of the m-th type water source of the i-th zone unit in the k-th scheme, Gk,iIndicating groundwater feed of the i-th zone unit in the k-th scheme; LIMITk,iRepresenting the groundwater mining target of the ith zone unit in the kth scheme; qk,iRepresenting the water demand of the unit of the ith area in the kth scheme; n is a radical ofk,iIndicating the water shortage of the unit of the ith area in the kth scheme; sk,i,m、Gk,i、Nk,iOptimizing the output of the module for GAMS;
the third module is used for receiving the water supply amount and the water shortage amount output by the second module, judging whether the regional unit lacks water under each combination scheme, and calculating the contribution rate of the regional unit according to the water shortage situation;
when the regional unit does not have a water shortage scene, respectively calculating the water saving contribution rate and the multi-source water increasing contribution rate by adopting an equation (5) and an equation (6); when the regional unit has a water shortage scene, calculating a water saving contribution rate, a multi-source water increasing contribution rate and a water shortage contribution rate by adopting an equation (5), an equation (6) and an equation (7) respectively;
the water saving contribution rate
Figure RE-GDA0002923607680000024
Is calculated as follows:
Figure RE-GDA0002923607680000025
the alternative water source contribution rate
Figure RE-GDA0002923607680000026
Is calculated as follows:
Figure RE-GDA0002923607680000027
the water shortage contribution rate
Figure RE-GDA0002923607680000031
Is calculated as follows:
Figure RE-GDA0002923607680000032
wherein Q is1,i、Q2,iWater demand, G, of the i-th zone unit in the schemes 1 and 2, respectively1,i、G2,i、G3,iGroundwater feed, S, for the i-th zone unit in scheme 1, scheme 2, and scheme 3, respectively1,i,m、S2,i,mThe water supply amount of the mth type water source of the ith area unit in the scheme 1 and the scheme 2 is respectively; r1,i,m、R2,i,mThe water supply amount of the mth type water source of the ith area unit in the scheme 1 and the scheme 2 is respectively;
Q1,i、Q2,iwater demand predicted for the first module, G1,i、G2,i、G3,i、S1,i,m、S2,i,m、R1,i,m、R2,i,mBoth are GAMS optimized output.
Furthermore, in the first module, the water demand corresponding to the combination scheme is predicted by using a water demand quota method.
Furthermore, in the first module, under the situation scheme that general water saving is taken as water demand input, the water demand adopts the product of the current actual water usage quota and the planned socioeconomic index; under the scenario scheme of taking the intensified water conservation as the water demand input, the water demand adopts the product of the planned annual water demand quota and the planned socioeconomic index.
Furthermore, in the first module, the underground water pressure mining target is obtained from data compiled by a water administration department.
Compared with the prior art, the invention has the following characteristics:
(1) at present, no alternative water source contribution rate balance analysis system takes water shortage as a virtual water source for balancing the gap between water conservation, water increase and groundwater supply variation. The invention introduces a virtual water source, and can show the influence degree of multiple ways (water saving, multi-source water increasing and water shortage) on the groundwater supply variation.
(2) The method is simple and easy to implement, the complex multi-path alternative water source displacement relation is condensed into a paradigm, a decision maker can conveniently identify the action rule of each path on the underground water pressure mining, and decision support is provided for practice management work such as water distribution and the like.
Detailed Description
The following further describes the technical solutions of the present invention with reference to specific embodiments, so that those skilled in the art can better understand the present invention and can implement the present invention.
The system of the present invention will be described in detail below.
Scheme identification.
Based on the assumption that the effect generated when two major elements of the demand side and the supply side change simultaneously is equal to the effect accumulation generated when a single element changes, when a demand scheme (general water conservation W1 and intensified water conservation W2) and a groundwater supply constraint scheme (current mining L1 and pressing mining target L2), a pairwise combination scheme is formed: the relationships between the variation of groundwater supply and the water saving amount, the multi-source water supply amount and the water shortage amount under the two schemes are analyzed respectively when W1& L1, W2& L1, W2& L1 and W2& L2 are adopted. It is worth noting here that the W1& L2 solution does not actually exist, so the combination of W1& L2 and W1& L1 is not considered.
The scheme W1& L1 is a scenario scheme that the current annual underground water exploitation amount is used as water supply restriction, and general water saving is used as water demand input, and is called a general water saving & current excess mining scheme for short. The W2& L1 protocol refers to: the current situation scheme that the underground water exploitation amount is taken as water supply constraint and the intensified water saving is taken as water demand input is called 'intensified water saving & current situation excess mining scheme' for short. The W2& L2 protocol refers to: the scenario scheme that the underground water exploitation amount based on the underground water pressure exploitation target is taken as water supply constraint and the intensified water conservation is taken as water demand input is called as an intensified water conservation and pressure exploitation scheme for short.
For convenience of description, the W1& L1 scheme, the W2& L1 scheme, and the W2& L2 scheme will be hereinafter abbreviated as K1, K2, and K3 schemes, respectively.
And (II) predicting water requirement and determining an underground water pressure mining target.
The water demand forecasting method is a conventional method, and can generally adopt a water demand quota method for forecasting, the method is the product of the water demand quota and social economic indexes, the social economic indexes can adopt data in data such as ' statistical yearbook ', urban general planning ' and the like, and the water demand quota is determined after comprehensive analysis according to the local water demand quota standard, the current annual actual water demand quota and the planned annual water demand quota. For the invention, the water demand of the 'general water-saving scheme' is determined by the product of the current actual water demand quota and the planned socioeconomic index, and the water demand of the 'reinforced water-saving scheme' is determined by the product of the planned water demand quota and the planned socioeconomic index. The present invention uses the following table 1 to predict water demand for K1, K2, and K3 protocols, respectively. And for each scheme, respectively predicting the agricultural water demand, the industrial water demand, the domestic water demand and the ecological environment water supplement of each regional unit, and summing to obtain the water demand of the regional unit.
TABLE 1 Water demand rationing method forecast scheme water demand
Figure RE-GDA0002923607680000041
Figure RE-GDA0002923607680000051
The underground water pressure mining target can be obtained through data compiled by a water administrative department, and is generally obtained through files compiled by a local water administrative department, such as an underground water super mining comprehensive treatment action scheme, and if the files clearly suggest the underground water pressure mining target in the area, the underground water pressure mining target is directly adopted. And if the underground water exploitability is provided in the file, determining an underground water pressure exploitation target according to the difference value between the actual underground water exploitation amount and the underground water exploitability, wherein the actual underground water exploitation amount is from statistical data of water resource bulletin.
And (III) designing a balance analysis system for alternative water source contribution rate.
The alternative water source contribution rate balance analysis system is developed based on GAMS general modeling software, and realizes a balance analysis function by utilizing an optimization target and a linear solving algorithm. Various optimization algorithms are built in the GAMS, the method mainly adopts an LP algorithm (linear optimization algorithm), and the GAMS automatically optimizes output variables after input variables and constraint conditions are introduced into a GAMS interface. The method takes water demand Q and an underground water pressure mining target LIMIT as input variables, takes underground water supply not more than the underground water pressure mining target as a constraint condition (see formula 1), takes a formula (2) as an objective function, takes water supply S and water shortage N as output variables, and substitutes the output variables into a contribution rate calculation module in an overlapping mode.
The meaning of the objective function adopted by the optimization algorithm of the invention is as follows: the marginal benefits of different water sources supplying different zone units vary, for example: the benefits of external water supply for agriculture of a unit of a certain area and industrial use of a unit of another area are different, and besides considering the cost problem and the balanced water distribution problem, the optimization target of the objective function is to hope to obtain the maximum water supply benefit.
Gk,i≤LIMITk,i (1)
Figure RE-GDA0002923607680000052
Figure RE-GDA0002923607680000053
Figure RE-GDA0002923607680000054
Figure RE-GDA0002923607680000055
Formulae (1) to (5):
k denotes the combination scheme number, defining: k is 1 to represent general water saving and current super mining scheme, k is 2 to represent enhanced water saving and current super mining scheme, and k is 3 to represent enhanced water saving and pressure mining scheme;
i represents the unit numbers of different areas, and administrative units such as counties, districts and the like are generally adopted; il is the total number of area units;
m represents the number of the alternative water source types, and ml represents the total number of the alternative water source types; in the invention, the alternative water source mainly comprises 3 types of local surface water, external water and unconventional water, namely ml is 3;
t represents a time period number, and tl is the total time period number;
Gk,ithe groundwater supply quantity of the ith area unit in the kth scheme is represented and is an output variable after GAMS optimization;
LIMITk,irepresenting the underground water pressure mining target of the ith area unit in the kth scheme, wherein the underground water pressure mining target is the input quantity of an optimization algorithm;
δi,m,tindicating the marginal benefit of the water supply of the mth type water source of the ith area unit in the t time period; marginal benefit is calculated by adopting a marginal benefit function, specifically, a Cobb-Douglas production function can be adopted for solving, or the economic hypothesis which is the biggest in total profit is deduced based on the marginal cost equal to the marginal benefit;
Sk,i,mthe water supply amount of the mth type water source of the ith area unit in the kth scheme is represented and is the output amount after GAMS optimization;
Qk,irepresenting the water demand of the ith area unit in the kth scheme, which is the input quantity of the optimization algorithm;
Nk,ithe water shortage of the i-th area unit in the k scheme is represented and is the output quantity after GAMS optimization;
Figure RE-GDA0002923607680000061
representing the alternative water source contribution, x corresponds to the contribution type,
Figure RE-GDA0002923607680000062
Figure RE-GDA0002923607680000063
respectively representing a water saving contribution rate calculation function, a multi-source water increasing contribution rate calculation function and a water shortage contribution rate calculation function.
The alternative water source contribution rate calculation module provided by the invention is nested in GAMS modeling software, takes the water supply amount S as an input variable and takes the contribution rate
Figure RE-GDA0002923607680000064
Is a module that outputs variables.
The water source replacement and water saving are two important ways of underground hydraulic mining, and under the condition that no water shortage exists in the regional unit, the sum of the water saving contribution rate and the multi-source water increasing contribution rate is 1; under the condition that the regional unit has water shortage, considering the water shortage as a virtual water source, the water saving contribution rate
Figure RE-GDA0002923607680000065
Multi-source water-increasing contribution rate
Figure RE-GDA0002923607680000066
Water deficit contribution rate
Figure RE-GDA0002923607680000067
The sum is 1. In the optimization algorithm, the water shortage N of the area unit under each combination scheme can be calculated by using a formula (4)k,iAnd judging whether the area unit has water shortage under the combination scheme according to the calculated water shortage. When water shortage Nk,i0, water deficit; when water shortage Nk,iGreater than 0, indicating no water shortage; n is a radical ofk,iIf the GAMS is not more than 0, the implicit condition that the water supply does not exceed the water demand is considered during GAMS optimization. Contribution rate water-saving contribution rate and multi-source water increasing under water shortage situationThe contribution rate and the water shortage contribution rate have a relationship shown in formula (6):
Figure RE-GDA0002923607680000068
in formula (6):
Figure RE-GDA0002923607680000069
representing the water saving contribution rate of the ith zone unit;
Figure RE-GDA00029236076800000610
(ii) an alternative water source contribution rate for the mth type of water source for the ith zone unit;
Figure RE-GDA00029236076800000611
is the water shortage contribution rate of the unit of the ith area.
Water shortage or non-water shortage situation, water saving contribution rate
Figure RE-GDA00029236076800000612
All calculated by equation (7):
Figure RE-GDA0002923607680000071
in formula (7):
Q1,i、Q2,irespectively "general water conservation&Current super-mining scheme 'and' intensified water-saving&The water demand of the unit in the ith area in the current super-sampling scheme;
G1,i、G2,irespectively "general water conservation&Current super mining scheme 'and' mining intensified water saving&The groundwater supply amount of the i-th area unit in the current super scheme is the output amount after GAMS optimization;
S1,i,m、S2,i,mrespectively "general water conservation&Current super-mining scheme 'and' intensified water-saving&In the current super-sampling scheme, the water supply amount of the mth type water source of the ith area unit is the output amount after GAMS optimization.
Lack of water or notWater shortage situation, multi-source water increase contribution rate
Figure RE-GDA0002923607680000072
All calculated by equation (8):
Figure RE-GDA0002923607680000073
in formula (8):
G3,ito' intensify water conservation&The groundwater supply amount of the i-th area unit in the pressure mining scheme is the output amount after GAMS optimization;
R1,i,m、R2,i,mrespectively "intensified water saving&Current super-mining scheme 'and' intensified water-saving&And the water supply amount of the mth type water source of the ith area unit in the pressure collection scheme is the output amount after GAMS optimization.
Water deficit contribution rate
Figure RE-GDA0002923607680000074
Is calculated as follows:
Figure RE-GDA0002923607680000075
the fourth step: and (4) carrying out balance analysis on the contribution rate of the alternative water source.
The calculated contribution rate value can represent the influence of water saving and water increasing on the underground water mining of the regional unit. When in use
Figure RE-GDA0002923607680000076
The larger the water is, the more obvious the effect of water saving on underground hydraulic mining of the regional unit is;
Figure RE-GDA0002923607680000077
the larger the water source is, the more obvious the effect of increasing m types of water sources on underground hydraulic mining of the regional unit is;
Figure RE-GDA0002923607680000081
the larger the area, the more water-saving the area unit,The water increasing way has no obvious effect on underground hydraulic pressure mining and has large difficulty in pressure mining. Therefore, the outputted contribution rate can be used as a reference for water resource management decision, and particularly, the decision reference can be provided as an alternative water source replacement path possibly involved in underground water pressure mining.
The technical solution provided by the present invention is not limited by the above embodiments, and all technical solutions formed by utilizing the structure and the mode of the present invention through conversion and substitution are within the protection scope of the present invention.

Claims (4)

1.基于地下水压采目标的替代水源贡献率平衡分析系统，其特征是，包括：1. A balance analysis system for the contribution rate of alternative water sources based on the target of groundwater pressure extraction, which is characterized by including: 第一模块，用来预测各组合方案对应的需水量及确定地下水压采目标；The first module is used to predict the water demand corresponding to each combination scheme and determine the target of groundwater pressure extraction; 所述组合方案包括方案1、方案2、方案3，定义如下：The combination scheme includes scheme 1, scheme 2 and scheme 3, which are defined as follows: 方案1指：以现状年地下水开采量为供水约束、以一般节水为需水输入的情景方案；Scheme 1 refers to the scenario scheme in which the current annual groundwater exploitation is the water supply constraint and the general water saving is the water demand input; 方案2指：以现状年地下水开采量为供水约束、以强化节水为需水输入的情景方案；Scheme 2 refers to the scenario scheme in which the current annual groundwater exploitation is the water supply constraint and the enhanced water saving is the water demand input; 方案3指：以基于地下水压采目标的地下水开采量为供水约束、以强化节水为需水输入的情景方案；Scheme 3 refers to a scenario scheme in which groundwater extraction based on the target of groundwater pressure extraction is the water supply constraint and enhanced water saving is the water demand input; 第二模块，用来接收第一模块输出的需水量和地下水压采目标，并利用GAMS优化模块获得优化后各组合方案对应的供水量和缺水量；The second module is used to receive the water demand and groundwater pressure extraction target output by the first module, and use the GAMS optimization module to obtain the water supply and water shortage corresponding to each combination scheme after optimization; 所述GAMS优化模块采用式(1)所示的目标函数、式(2)～(3)所示的约束条件、以及式(4)来计算缺水量：The GAMS optimization module uses the objective function shown in formula (1), the constraints shown in formulas (2) to (3), and formula (4) to calculate the water shortage:
Figure FDA0002801948010000011
Figure FDA0002801948010000011
 Gk,i≤LIMITk,i (2)G k,i ≤LIMIT k,i (2)
Figure FDA0002801948010000012
Figure FDA0002801948010000012
Figure FDA0002801948010000013
Figure FDA0002801948010000013
 其中，t表示时间段编号，tl为时间段总数；m表示替代水源类型编号，ml表示替代水源类型总数；i表示不同区域单元，il为区域单元总数；k指组合方案编号；Among them, t represents the time period number, and tl is the total number of time periods; m represents the number of alternative water source types, and ml represents the total number of alternative water source types; i represents different regional units, and il represents the total number of regional units; k refers to the combination scheme number; δi,m,t表示第i单元第m类水源在第t时间段供水量的边际效益；Sk,i,m表示第k方案中第i区域单元第m类水源的供水量，Gk,i表示第k方案中第i区域单元的地下水供水量；LIMITk,i表示第k方案中第i区域单元的地下水压采目标；Qk,i表示第k方案中第i区域单元的需水量；Nk,i表示第k方案中第i区域单元的缺水量；Sk,i,m、Gk,i、Nk,i为GAMS优化模块的输出量；δ i,m,t represents the marginal benefit of the water supply of the mth type of water source in the ith unit in the t time period; S k,i,m represents the water supply of the mth type of water source in the ith area unit in the kth scheme, G k ,i represents the groundwater supply in the ith area unit in the kth scheme; LIMIT k,i represents the groundwater pressure extraction target of the ith area unit in the kth scheme; Q k,i represents the demand for the ith area unit in the kth scheme Water quantity; N k,i represents the water shortage of the i-th area unit in the k-th scheme; S k,i,m , G k,i , N k,i are the output quantities of the GAMS optimization module; 第三模块，用来接收第二模块输出的供水量和缺水量，并判断各组合方案下区域单元是否缺水，根据缺水情景计算区域单元的贡献率；The third module is used to receive the water supply and water shortage outputted by the second module, and determine whether the regional unit is short of water under each combination scheme, and calculate the contribution rate of the regional unit according to the water shortage scenario; 当区域单元不存在缺水情景，采用式(5)和式(6)分别计算节水贡献率和多源增水贡献率；当区域单元存在缺水情景，采用式(5)、式(6)、式(7)分别计算节水贡献率、多源增水贡献率、缺水贡献率；When there is no water shortage scenario in the regional unit, formulas (5) and (6) are used to calculate the water saving contribution rate and multi-source water increase contribution rate respectively; when there is a water shortage scenario in the regional unit, formulas (5) and (6) are used ) and formula (7) to calculate the water saving contribution rate, the multi-source water increase contribution rate, and the water shortage contribution rate respectively; 所述节水贡献率
Figure FDA0002801948010000014
的计算如下：The water saving contribution rate
Figure FDA0002801948010000014
is calculated as follows:
Figure FDA0002801948010000021
Figure FDA0002801948010000021
 所述替代水源贡献率
Figure FDA0002801948010000022
的计算如下：The contribution rate of the alternative water source
Figure FDA0002801948010000022
is calculated as follows:
Figure FDA0002801948010000023
Figure FDA0002801948010000023
 所述缺水贡献率
Figure FDA0002801948010000024
的计算如下：The water shortage contribution rate
Figure FDA0002801948010000024
is calculated as follows:
Figure FDA0002801948010000025
Figure FDA0002801948010000025
 其中，Q1,i、Q2,i分别为方案1、方案2中第i区域单元的需水量，G1,i、G2,i、G3,i分别为方案1、方案2、方案3中第i区域单元的地下水供水量，S1,i,m、S2,i,m分别为方案1、方案2中第i区域单元第m类水源的供水量；R1,i,m、R2,i,m分别为方案1、方案2中第i区域单元第m类水源的供水量；Among them, Q 1,i and Q 2,i are the water demand of the i-th area unit in Scheme 1 and Scheme 2, respectively, and G 1,i , G 2,i and G 3,i are respectively Scheme 1, Scheme 2, Scheme 2, The groundwater water supply of the unit in the i-th area in 3, S 1,i,m and S 2,i,m are the water supply of the m-th water source in the i-th area unit in Scheme 1 and Scheme 2, respectively; R 1,i,m , R 2,i,m are the water supply volume of the m-th water source in the i-th area unit in Scheme 1 and Scheme 2, respectively; Q1,i、Q2,i为第一模块预测的需水量，G1,i、G2,i、G3,i、S1,i,m、S2,i,m、R1,i,m、R2,i,m均为GAMS优化后的输出量。Q 1,i , Q 2,i are the water demand predicted by the first module, G 1,i , G 2,i , G 3,i , S 1,i,m , S 2,i,m , R 1, i,m and R 2,i,m are the output quantities after GAMS optimization. 2.如权利要求1所述的基于地下水压采目标的替代水源贡献率平衡分析系统，其特征是：2. the alternative water source contribution rate balance analysis system based on groundwater pressure extraction target as claimed in claim 1, is characterized in that: 第一模块中，利用需水定额法来预测组合方案对应的需水量。In the first module, the water demand quota method is used to predict the water demand corresponding to the combination scheme. 3.如权利要求1所述的基于地下水压采目标的替代水源贡献率平衡分析系统，其特征是：3. the alternative water source contribution rate balance analysis system based on groundwater pressure extraction target as claimed in claim 1, is characterized in that: 第一模块中，在以一般节水为需水输入的情景方案下，需水量采用现状实际用水定额和规划社会经济指标的乘积；在以强化节水为需水输入的情景方案下，需水量采用规划年计划需水定额和规划社会经济指标的乘积。In the first module, under the scenario scheme with general water saving as the input of water demand, the water demand is the product of the current actual water consumption quota and the planned social and economic indicators; under the scenario scheme with enhanced water saving as the input of water demand, the water demand The product of the planned annual water demand quota and the planned socio-economic indicators is adopted. 4.如权利要求1所述的基于地下水压采目标的替代水源贡献率平衡分析系统，其特征是：4. the alternative water source contribution rate balance analysis system based on groundwater pressure extraction target as claimed in claim 1, is characterized in that: 第一模块中，通过从水行政主管部门编制的资料中获取地下水压采目标。In the first module, the target of groundwater pressure extraction is obtained from the data compiled by the water administrative department.
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