CN114528360A - Flowing water distribution rapid generation method based on flow velocity change - Google Patents
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Abstract
A flowing water distribution rapid generation method based on flow velocity change relates to the technical field of hydrological monitoring. The method is used for rapidly obtaining the water distribution situation in an emergency. A flowing water distribution rapid generation method based on flow velocity change comprises the following steps: s1: analyzing the geographic environment data of the target area; s2: generating a first element flow database; s3: generating a second element flow database; s4, generating a calculation result and storing the calculation result as an area static flow database; s5, generating a regional dynamic flow velocity database; and S6, inquiring a database according to the total inflow water quantity to calculate the distribution condition of the water flow in each block in the current region, wherein the database comprises at least one of a first flow element database, a second flow element database and a regional dynamic flow rate database. The method has the beneficial effect that the flowing water distribution condition can be generated rapidly.
Description
Technical Field
The invention relates to the technical field of hydrological monitoring, in particular to a flowing water distribution rapid generation method based on flow velocity change.
Background
In the production application fields such as field irrigation, precipitation distribution and flood discharge, by means of abundant topographic data, preliminary analysis can be carried out on the water distribution situation in the production application at present, and guidance basis is provided for the production application. However, three-dimensional calculation is performed only by depending on terrain data, and evaporation rate influence caused by air humidity and temperature, infiltration factors of lands with different properties, conditions of rivers, underground water or other artificial drainage facilities and the like around a target area are not considered, so that deviation between data of simulation calculation analysis and actual data occurs; because the calculation of the water distribution is a dynamic process, each calculation in the traditional algorithm needs to consume a large amount of calculation power and calculation time, and a quick calculation result cannot be provided in an emergency.
Disclosure of Invention
The invention aims to provide a flowing water distribution rapid generation method based on flow velocity change, which is used for rapidly obtaining the water distribution situation in an emergency.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a flowing water distribution rapid generation method based on flow velocity change comprises the following steps:
a flowing water distribution rapid generation method based on flow velocity change comprises the following steps:
s1: analyzing the geographic environment data of the target area to find out several factors influencing the current water flow collection speed change, wherein the factors comprise topographic factors, geological factors, environmental factors and peripheral related facility factors;
s2: taking the topographic factors as a first factor of flow rate change, dividing a target area into a plurality of blocks according to different flow rates, calculating the catchment capacity and the flow rate of each block at the current moment according to the data of the first factor when the flow rate of the blocks changes, and storing all calculation results as a first factor flow database;
s3: taking the geological factor as a second element of flow rate change, further dividing the blocks divided by the first element into a plurality of stages, calculating the catchment capacity and the flow rate of each block at the current moment according to the data of the second element on the basis of the first element flow database when the flow rate in each block changes, and storing all calculation results as a second element flow database;
s4, taking the peripheral related facilities as a third element of flow rate change, taking the triggering facilities as conditions, further refining the second element flow database, when the flowing water converges to the peripheral drainage facilities, rivers and underground water, stopping the subsequent flowing water convergence in the blocks, taking the triggering time as a condition, calculating the catchment capacity and the flow rate of each block at the current time, and storing all calculation results as a regional static flow database;
s5, calculating and generating a regional dynamic flow rate database according to the air temperature and humidity factors by taking the environmental factors as a fourth element of flow rate change;
and S6, inquiring a database according to the total inflow water quantity to calculate the distribution condition of the water flow in each block in the current region, wherein the database comprises at least one of a first flow element database, a second flow element database and a regional dynamic flow rate database.
Further, the distribution condition comprises the total water amount to be distributed, the water amount to be distributed and the water surface height.
Further, the S6 specifically includes the following steps:
s6.1, obtaining the environmental condition of the current area, calculating the total water quantity affected by the environment according to the area dynamic flow velocity database,
V＝V0*f(t，h)
wherein V0Representing the input total water volume, t representing the current environment temperature, h representing the current environment, and V being the calculated total water volume to be distributed;
s6.2, searching the regional static flow database according to the V value, referring to the stage water quantity of the regional static flow database, and finding out the corresponding catchment stage i and stage water quantity ViCalculating the quantity V 'of water to be distributed'
V′＝V0-Vi；
S6.3, determining the water volume V of each block in the current catchment stageinAnd a flow velocity value SinThe water quantity V' to be distributed is according to the flow velocity value SinIs distributed to each block
Vn＝Vin+V′*Sin
S6.4, calculating the water surface height H according to the water volume and the terrain data of each blockn
Hn＝h(Vn,DEM)
The DEM is a land type file corresponding to the block.
Further, S7, the water distribution of each block in the current area is calculated according to the water surface height of a certain area.
Further, the method of S7 is:
searching the regional static flow database according to the block ID and the H value, and finding out the corresponding catchment stage i and stage height H according to the stage height in the regional static flow databasei0Value of flow velocity Sin；
Calculating the catchment allowance V in the block according to the land type file and the height difference of the blocki0
＝h(H-),DEM
The DEM is a land type file corresponding to the block;
according to the flow rate value S of a blockinCalculating the catchment allowance V of the whole areai：
Vi＝Vi0/Si0
Determining the water capacity V of other blocks in the current catchment stageinAnd a flow velocity value VinThe amount of water V to be distributediAccording to the flow rate value SinIs distributed to each block
Vn＝Vin+Vi*Sin；
Calculating the water surface height H according to the water volume and the land type data of other blocksn
Hn＝h(Vn,DEM)
The DEM is a land type file corresponding to the block.
Has the beneficial effects that:
according to the rapid flow distribution generation method based on the flow velocity change, provided by the invention, by analyzing two aspects of factors influencing the total water amount and factors influencing the flow distribution, more parameters are introduced into a calculation model for calculating the water distribution, the calculation precision of the model is improved, and the use environment is enriched; meanwhile, by separating static factors and dynamic factors, the calculation process of the static influence factors is stored in a middle database mode, and calculation is carried out by inquiring the database in the subsequent process, so that repeated calculation of complex terrain and flow process is avoided, and the calculation speed in the application process is greatly improved. The method and the device can quickly obtain the distribution condition of the flowing water, and solve the problem that the distribution condition of the flowing water cannot be quickly obtained in the actual use process.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The first element flow rate database, the second element flow rate database, and the regional static flow rate database referred to in the summary of the invention are in the form of tables in the present embodiment, and in the following description, the first element flow rate table, the second element flow rate table, and the regional static flow rate table will be referred to as a first element flow rate table, a second element flow rate table, and a regional static flow rate table, respectively, depending on the specific form of the tables.
Besides the tables, the databases in different specific forms in the prior art can be selected by those skilled in the art according to different application scenarios of the present invention.
A flowing water distribution rapid generation method based on flow velocity change comprises the following steps
S1: through analyzing the geographic environment data of the target area, several key factors influencing the current water flow convergence speed change are found out, wherein the key factors comprise the terrain, the geology, the environment and the peripheral related facilities.
S2: the terrain factor is used as a first factor of flow rate change, and the target area is divided into a plurality of blocks according to different flow rates. In the process of converging flowing water, due to different water flow entering modes, the converging speed of each block is different; meanwhile, the convergence speed of each block is also changed due to the phenomena of fullness, extra injection, block combination and the like of adjacent blocks in the convergence process. According to the data of the first element, when the flow rate of a certain block changes, the catchment capacity and the flow rate of each block at the current moment are calculated, and all calculation results are stored as a first element flow table (as follows):
wherein:
id represents the phase of flow rate change;
vn represents the total water amount in the n stage;
vkm-n represents the amount of water existing in the mth block at the nth stage;
hkm-n represents the water level of the mth block at the nth stage;
skm-n represents the water flow speed of the mth block in the nth stage;
tkm-n indicates the block merging relationship of the mth block in the nth stage.
S3: and taking the geological factor as a second element of the flow rate change, and further dividing the block divided by the first element into a plurality of stages. Due to the fact that water seepage speeds of different geologies are different, the speed of the same block in the flowing water gathering process can be changed. In addition to the first element flow rate table, when the flow rate in each block changes based on the data of the second element, the catchment capacity and the flow rate at the current time of each block are calculated, and all the calculation results are stored as a second element flow rate table (specifically, the following table).
S4: and taking peripheral related facilities as a third element of the flow rate change, and further refining the second element flow meter on the condition of triggering the facility operation. When the flowing water is converged to peripheral drainage facilities, rivers and underground water, the blocks stop subsequent flowing water convergence, calculate the water collection capacity and the flow rate of each block at the current moment under the condition of the trigger moment, and store all calculation results as a regional static flow meter (specifically shown in the following table).
S5: taking environmental factors as a fourth element of flow rate change, and calculating and generating a regional dynamic flow rate table (specifically shown in the following table) according to factors such as air temperature, humidity and the like;
s6: and (3) calculating the distribution condition of the water flow in each block in the current area according to the total water inflow quantity by looking up a table:
first, the environmental condition of the current area is obtained, and the total water volume affected by the environment is calculated according to the area dynamic flow rate table:
V＝V0*f(t，h)
wherein V0Representing the input total water volume, t representing the current environment temperature, h representing the current environment, and V being the calculated total water volume to be distributed
Looking up the regional static flow table according to the value V, referring to the stage water volume in the table, finding out the corresponding catchment stage i and stage water volume ViAnd calculating the water amount V' to be distributed:
V′＝V0-V1
determining the water volume V of each block in the current catchment stageinAnd a flow velocity value SinThe water quantity V' to be distributed is according to the flow velocity value SinAssigning to each block:
Vn＝Vin+V′*Sin
calculating the height H of the water surface from the water volume and the terrain data of each blockn：
Hn＝h(Vn,DEM)
The DEM is a land type file corresponding to the block.
S7: calculating the water distribution condition of each block in the current area according to the water level height H of a certain area:
find the local static flow table according to the block ID and H value, and find the corresponding catchment stage i and stage height H by referring to the stage height in the tablei0Value of flow velocity Sin；
Calculate the catchment allowance V in the block from the block type file and the height differencei0：
Vi0＝h(H-),DEM
Wherein DEM is a region type file corresponding to the block
Flow velocity value S according to blockinCalculating the catchment allowance V of the whole areai：
Vi＝Vi0/SI0
Determining the water capacity V of other blocks in the current catchment stageinAnd a flow velocity value VinThe amount of water V to be distributediAccording to the flow rate value SinAssigning to each block:
Vn＝Vin+Vi*Sin
calculating the height H of the water surface from the water volume and the terrain data of other blocksn：
Hn＝h(Vn,DEM)
The DEM is a land type file corresponding to the block.
Taking rainfall inundation analysis of XX city XX area danger prevention emergency management bureau on a certain low-lying hardened road surface as an example:
the DEM file of the current section is analyzed, and the current section is divided into three low-lying areas K0, K1 and K2. Wherein K0 and K1 are combined when the flood height is 22.001 meters, and water is discharged from a side river when the flood height is 22.02 meters; k2 and K0, K1 combined height is 22.766 meters and 22.748 meters, K2 at the submerging height is 22.61 meters ponding and is discharged from the side river.
Calculating the water collection speed change stage of the submerging process according to the data to obtain the following table:
taking the rainfall flooding analysis of XX district emergency administration in XX city to a certain low-lying hardened road surface as an example:
the DEM file of the current section is analyzed, and the current section is divided into three low-lying areas K0, K1 and K2. Wherein K0 and K1 are combined when the flood height is 22.001 meters, and water is discharged from a side river when the flood height is 22.02 meters; k2 and K0, K1 combined height is 22.766 meters and 22.748 meters, K2 at the submerging height is 22.61 meters ponding and is discharged from the side river.
The calculation of the catchment speed variation phase of the flooding process from the data gives the following table:
collecting field data, making a temperature/humidity-flow rate table according to typical data of a strong precipitation period, and obtaining a calculation equation by using a curve fitting method:
| 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
| 70％ | 0.9364 | 0.9213 | 0.9208 | 0.9201 | 0.9187 | 0.9165 | 0.9148 | 0.9121 |
| 80％ | 0.9583 | 0.9575 | 0.957 | 0.9563 | 0.9548 | 0.9525 | 0.9508 | 0.9479 |
| 90％ | 0.9732 | 0.9724 | 0.9719 | 0.9712 | 0.9697 | 0.9674 | 0.9656 | 0.9627 |
calculate the water distribution of 10000 cubic meters at 90% humidity and 23 ℃. The result is obtained according to the calculation flow of S6:
| ID | H | V |
| K0 | 21.9184 | 2034.41 |
| K1 | 22.001 | 5130.85 |
| K2 | 22.0825 | 2566.73 |
and calculating the water distribution of the whole area when the maximum submerging depth of the K0 is 1.5 meters. The result is obtained according to the calculation flow of S7:
| ID | H | V |
| K0 | 21.1152 | 232.45 |
| K1 | 21.3565 | 1083.89 |
| K2 | 21.6232 | 471.53 |
。
according to the rapid flow distribution generation method based on the flow velocity change, provided by the invention, by analyzing two aspects of factors influencing the total water amount and factors influencing the flow distribution, more parameters are introduced into a calculation model for calculating the water distribution, the calculation precision of the model is improved, and the use environment is enriched; meanwhile, by separating static factors and dynamic factors, the calculation process of the static influence factors is stored in a middle database mode, and calculation is carried out by inquiring the database in the subsequent process, so that repeated calculation of complex terrain and flow process is avoided, and the calculation speed in the application process is greatly improved. The method and the device can quickly obtain the distribution condition of the flowing water, and solve the problem that the distribution condition of the flowing water cannot be quickly obtained in the actual use process. The method provided by the invention can be applied to computer programs.
Claims (5)
1. A flowing water distribution rapid generation method based on flow velocity change is characterized by comprising the following steps:
s1: analyzing the geographical environment data of the target area to find out several factors influencing the current water flow collection speed change, wherein the factors comprise topographic factors, geological factors, environmental factors and peripheral related facility factors;
s2: taking the topographic factors as a first factor of flow rate change, dividing a target area into a plurality of blocks according to different flow rates, calculating the catchment capacity and the flow rate of each block at the current moment according to the data of the first factor when the flow rate of the blocks changes, and storing all calculation results as a first factor flow database;
s3: taking the geological factors as a second element of flow rate change, further dividing the blocks divided by the first element into a plurality of stages, calculating the catchment capacity and the flow rate of each block at the current moment according to the data of the second element on the basis of the first element flow database when the flow rate in each block changes, and storing all calculation results as a second element flow database;
s4, taking the peripheral related facilities as a third element of flow rate change, taking triggering facility work as a condition, further refining the second element flow database, when the flowing water is converged to peripheral drainage facilities, rivers and underground water, blocks stop subsequent flowing water convergence, taking the triggering time as a condition, calculating the catchment capacity and the flow rate of each block at the current time, and storing all calculation results as a regional static flow database;
s5, calculating and generating a regional dynamic flow rate database according to the air temperature and humidity factors by taking the environmental factors as a fourth element of flow rate change;
and S6, inquiring a database according to the total inflow water quantity to calculate the distribution condition of the water flow in each block in the current region, wherein the database comprises at least one of a first flow element database, a second flow element database and a regional dynamic flow rate database.
2. The method as claimed in claim 1, wherein the distribution includes total water to be distributed, water to be distributed and water level.
3. The method for rapidly generating a water flow distribution based on flow velocity variation according to claim 2, wherein the step S6 comprises the steps of:
s6.1, obtaining the environmental condition of the current area, calculating the total water quantity affected by the environment according to the area dynamic flow velocity database,
V＝V0*f(t，h)
wherein V0Representing the input total water volume, t representing the current environment temperature, h representing the current environment, and V being the calculated total water volume to be distributed;
s6.2, searching the regional static flow database according to the V value, referring to the stage water quantity of the regional static flow database, and finding out the corresponding catchment stage i and stage water quantity ViCalculating the amount of water to be distributed V'
V′＝V0-Vi；
S6.3, determining the water volume V of each block in the current catchment stageinAnd a flow velocity value SinThe water quantity V' to be distributed is according to the flow velocity value SinIs distributed to each block
Vn＝Vin+V′*Sin
S6.4, calculating the water surface height H according to the water volume and the terrain data of each blockn
Hn＝h(Vn,DEM)
The DEM is a land type file corresponding to the block.
4. The method of claim 3, wherein the method comprises S7 estimating water distribution of each block in a current area according to the water level of the area.
5. The method for rapidly generating a flowing water distribution based on the change of the flow velocity as claimed in claim 4, wherein the method of S7 is as follows:
searching the regional static flow database according to the block ID and the H value, and finding out the corresponding catchment stage i and stage height H according to the stage height in the regional static flow databasei0Value of flow velocity Sin；
Calculating the catchment allowance V in the block according to the land type file and the height difference of the blocki0＝h(H-),DEM
The DEM is a land type file corresponding to the block;
the flow velocity value S according to the blockinCalculating the catchment allowance V of the whole areai：
Vi＝Vi0/Si0
Determining the water capacity V of other blocks in the current catchment stageinAnd a flow velocity value VinThe amount of water V to be distributediAccording to the flow rate value SinIs distributed to each block
Vn＝Vin+Vi*Sin；
Calculating the water surface height H according to the water volume and the land type data of other blocksn
Hn＝h(Vn,DEM)
The DEM is a land type file corresponding to the block.
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| CN112785024A (en) * | 2019-11-08 | 2021-05-11 | 天津大学 | Runoff calculation and prediction method based on watershed hydrological model |
| CN113762756A (en) * | 2021-08-31 | 2021-12-07 | 北京七兆科技有限公司 | Transformer substation accumulated water flooding calculation method based on high-precision DEM |
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- 2021-12-31 CN CN202111672171.5A patent/CN114528360A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170127087A (en) * | 2016-05-10 | 2017-11-21 | 주식회사 알엔에이솔루션 | Method for Management of River Facility through River Diagnosis and System thereof |
| KR101912628B1 (en) * | 2017-05-30 | 2018-10-30 | 에스지에이블록체인 주식회사 | Method for Diagnosis of Runoff-Hydraulic Model Analysis result |
| CN110197017A (en) * | 2019-05-17 | 2019-09-03 | 长安大学 | A kind of urban river rubber dam group's Ecology regulation method |
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