CN108536910A - A kind of research method of larger fish HYDRODYNAMIC CONDITION RELATING TO - Google Patents
A kind of research method of larger fish HYDRODYNAMIC CONDITION RELATING TO Download PDFInfo
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- CN108536910A CN108536910A CN201810196383.2A CN201810196383A CN108536910A CN 108536910 A CN108536910 A CN 108536910A CN 201810196383 A CN201810196383 A CN 201810196383A CN 108536910 A CN108536910 A CN 108536910A
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Abstract
A kind of larger fish is suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, and this approach includes the following steps：Step 1：Establish Fish of interest habitat Three-dimensional Hydrodynamic Model；Step 2：Model is verified using measured profile flow speed value；Step 3：Fish of interest habitat is monitored using double frequency sonar video system；Step 4：Flow field when being occurred to each Fish of interest signal that step 3 detects using the model verified carries out simulation calculating；Step 5：The HYDRODYNAMIC CONDITION RELATING TO value of each signal is extracted from analog result；Step 6：The frequency of the echo signal in different HYDRODYNAMIC CONDITION RELATING TO values is counted, is obtained suitable for HYDRODYNAMIC CONDITION RELATING TO；Step 7：Fish of interest habitat is monitored for a long time, is corrected repeatedly.The present invention provides a kind of method for larger fish suitable for HYDRODYNAMIC CONDITION RELATING TO, and field monitoring is combined by this method with numerical simulation, can correct result of study repeatedly, accurately and reliably, is not contacted to Fish of interest and is not injured.
Description
Technical field
The present invention relates to ecological protection field, especially a kind of research method of larger fish HYDRODYNAMIC CONDITION RELATING TO.
Background technology
Fish growth breeding is habitat and hydrologic condition is coefficient as a result, the various hydrology, hydraulics are equal
There is a threshold range, only within these threshold ranges, the growth and breeding of fish can be just smoothed out.About HYDRODYNAMIC CONDITION RELATING TO
The quantitative study of threshold value, to instructing Habitat for Fish improvement of terms to be of great significance.And for larger fish, it is especially large-scale
Species of Rare Fish from Qingdao can not obtain it suitable for HYDRODYNAMIC CONDITION RELATING TO in laboratory, can only be studied habitat in the wild.It needs in the wild
Positioning is carried out to larger fish and habitat flow field measures, currently used localization method has mark recapture, ultrasonic wave mark
Will, satellite mark, underwater video, sonar technique etc., but most methods have injury to fish.HYDRODYNAMIC CONDITION RELATING TO measurement method
Mainly there are propeller type current meter, electromagnetic current metre, doppler velocimeter, laser doppler anemometry etc., but is difficult to accomplish to measure and position
It is synchronous to carry out.
Invention content
Technical problem to be solved by the invention is to provide a kind of larger fish suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, should
Method is combined by sonar detection and mathematical model, overcomes Fish of interest positioning and HYDRODYNAMIC CONDITION RELATING TO measures nonsynchronous be stranded
Difficulty, and do not contact and do not injure Fish of interest provides a kind of larger fish suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO.Including following
Step：
Step 1：Establish Fish of interest spawning ground Three-dimensional Hydrodynamic Model；
Step 2：Model is verified using measured profile flow speed value；
Step 3：Fish of interest habitat is monitored using double frequency sonar video system；
Step 4：Each Fish of interest signal that the model verified using the step 2 detects the step 3
Flow field when appearance carries out simulation calculating；
Step 5：The HYDRODYNAMIC CONDITION RELATING TO value of each signal is extracted from step 4 analog result；
Step 6：The frequency of the Fish of interest signal in different HYDRODYNAMIC CONDITION RELATING TO values is counted, is obtained suitable for HYDRODYNAMIC CONDITION RELATING TO；
Step 7：Fish of interest habitat is monitored for a long time, step 3,4,5,6 is repeated, result is repaiied repeatedly
Just；
Complete research of the Fish of interest suitable for HYDRODYNAMIC CONDITION RELATING TO.
In step 1, Three-dimensional Hydrodynamic Model (1) requires to be established according to actual landform and building element；(2) meter is required
Calculate vertical HYDRODYNAMIC CONDITION RELATING TO；(3) it requires using turbulent dynamic model.
In step 2, measured profile requires to measure each layer flow speed value of section using doppler velocimeter.
In step 3, it is desirable that record the position of the Fish of interest signal of monitoring, while record find the signal when flow,
The aerial drainage mode of the hydrographic features such as water level and water outlet.
In step 4, it is desirable that calculate the HYDRODYNAMIC CONDITION RELATING TO value of each Fish of interest signal.
Step 3,4,5,6, which can be repeated, is modified result of study.
1, the present invention provides a kind of larger fish suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, is put forward for the first time and a kind of visiting sonar
A kind of larger fish being combined with numerical simulation is surveyed suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, present method solves fish positioning
With HYDRODYNAMIC CONDITION RELATING TO measure can not be synchronous difficulty.This method can correct result of study repeatedly, as a result accurately and reliably, not contact
Fish of interest is not injured, the suitable HYDRODYNAMIC CONDITION RELATING TO of Fish of interest can be obtained.For protection Fish of interest and Fish of interest is instructed to dwell
Breath ground improvement of terms is of great significance.
2, smaller to normal water currents using each laminar flow speed of doppler velocimeter Measure section.
3, Three-dimensional Hydrodynamic Model:(1) it requires to be established according to actual landform and building element；(2) it requires to calculate vertical
HYDRODYNAMIC CONDITION RELATING TO；(3) it requires using turbulent dynamic model.Three-dimensional Hydrodynamic Model can be made to be more in line with true feelings in this way
Condition.
Description of the drawings
Fig. 1 is flow chart of steps of the present invention；
Fig. 2 is that bottom CS3 cross-sectional flows calculated value in river of the present invention and measured value compare；
Fig. 3 is that bottom CS4 cross-sectional flows calculated value in river of the present invention and measured value compare；
Fig. 4 mandarin sturgeon signals distribution situation different in flow rate；
Fig. 5 mandarin sturgeon signals frequency distribution situation different in flow rate.
Specific implementation mode
With reference to specific embodiment, further details of elaboration is made to the present invention, but embodiments of the present invention are not
It is confined to the range of embodiment expression.These embodiments are merely to illustrate the present invention, range and is not intended to limit the present invention.This
Outside, after reading present disclosure, those skilled in the art can various modifications may be made to invention, these equivalent variations are same
Fall within the appended claims limited range of the present invention.
Embodiment 1
Step 1：Establish Fish of interest habitat Three-dimensional Hydrodynamic Model.Mandarin sturgeon is that the distinctive large size in China river of tracing back is whirled
Trip property benthic fishes and animals under first-class state protection.After THE RIVER CLOSURE FOR THE GEZHOUBA PROJECT, mandarin sturgeon group is in Gezhouba down-stream Yichang
River section forms new spawning ground.Establish mandarin sturgeon habitat three-dimensional k-ε turbulent model under Ge Zhou Ba.Expression is as follows：
(1) tubulence energy k equations：
(2) tubulence energy dissipative shock wave ε equations：
In formula：ρ is the density of water, takes 1000kg/m herein3；X, y, z are three direction distances (m)；U, v, w are three sides
To flow velocity (m/s)；T is the time (s)；K is tubulence energy；ε is tubulence energy dissipative shock wave；μ is molecular viscosity coefficient, GkFor by putting down
Turbulent fluctuation kinetic energy generates item caused by equal velocity gradient, is defined asμ t are eddy viscosity, μ t=ρ Cμk2/
ε, Cμ=0.0845；σk,σεPrandtl numbers respectively corresponding to tubulence energy and rapid energy dissipative shock wave, value is 1.39；Cε1、
Cε2It is empirical, value is respectively 1.44 and 1.92.Mandarin sturgeon habitat uses three-dimensional k-ε turbulent model, is more in line with true
Truth condition can simulate more complicated streamflow regime.
Step 2：Model is verified using measured profile flow velocity.Model is carried out using measured profile bottom flow velocity under Ge Zhou Ba to test
Card, dam letdown flow 14904m when measurement3/s.Each section verification result is as Figure 2-3.It is seen that calculating
Each section bottom velocity distribution gone out totally coincide preferable with measured result.It can be seen that the three-dimensional water that this research is established
Flowing mathematical model has higher computational accuracy, being capable of preferable simulation Spawning Groud of Chinese Sturgeon Down Gezhouba Dam three-dimensional water movement spy
Property.
Step 3：Fish of interest habitat is monitored using double frequency sonar video system.In -12 months in November, 2016
Hua Xun research institutes carry out mandarin sturgeon natural propagation monitoring under Ge Zhou Ba, and working contents include that sonar detection, fish are obtained
It is to use audio frequency lens that object acquisition, river bottom fishing ovum etc., wherein sonar detection, which use DIDSON double frequency video sonar systems, the equipment,
The Imaging sonar of system can generate the HD image for being almost equal to quality of image image in dim muddy water.2016
Mandarin sturgeon research institute using the detection mandarin sturgeon signal 49 altogether of DIDSON double frequency videos sonar system two months, wherein have 47
Spawning ground in Ge Zhou Ba.
Step 4：Flow field when being occurred to each Fish of interest signal that step 3 detects using the model verified into
Row simulation calculates；The 47 mandarin sturgeon signals occurred to spawning ground on sonar contact to great river using Three-dimensional Hydrodynamic Model
Flow field carries out simulation calculating respectively.
Step 5：The hydraulic elements of each signal are extracted from analog result, this application case is by taking flow velocity as an example.
Step 6：The frequency of the echo signal in value different in flow rate is counted, obtains reference velocities；Statistics mandarin sturgeon signal exists
The frequency in value different in flow rate is as illustrated in figures 4-5., it is apparent that flow velocity when most of signal occurs is on the left sides 1.0m/s
The right side, wherein velocity flow profile account for 89.3% in the frequency of 0.7~1.3m/s, and 0.7~1.3m/s of initial option is suitable as mandarin sturgeon
Flow rates.
Step 7：Mandarin sturgeon habitat is monitored for a long time, step 3,4,5,6 is repeated, result is corrected repeatedly,
Finally obtain more accurate mandarin sturgeon suitable flow rate range.
Embodiment described above is only presently preferred embodiments of the present invention, protection domain not thereby limiting the invention,
Therefore it is all according to equivalence changes made by the shape of the present invention, construction and principle, it should all be covered by protection scope of the present invention.
Claims (5)
1. a kind of larger fish is suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, it is characterised in that this approach includes the following steps：
Step 1：Establish Fish of interest habitat Three-dimensional Hydrodynamic Model；
Step 2：Verification model is carried out using measured profile flow speed value；
Step 3：Fish of interest habitat is monitored using double frequency sonar video system；
Step 4：There is each Fish of interest signal that the step 3 detects in the model verified using the step 2
When flow field carry out simulation calculating；
Step 5：The HYDRODYNAMIC CONDITION RELATING TO value of each signal is extracted from step 4 analog result；
Step 6：The frequency of the Fish of interest signal in different HYDRODYNAMIC CONDITION RELATING TO values is counted, is obtained suitable for HYDRODYNAMIC CONDITION RELATING TO；
Step 7：Fish of interest habitat is monitored for a long time, step 3,4,5,6 is repeated, result is corrected repeatedly；
Complete research of the larger fish suitable for HYDRODYNAMIC CONDITION RELATING TO.
2. a kind of larger fish according to claim 1 is suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, it is characterised in that step 1
In, Three-dimensional Hydrodynamic Model（1）It is required that being established according to habitat actual landform and building member；（2）It is required that calculating vertical
HYDRODYNAMIC CONDITION RELATING TO；（3）It is required that using turbulent dynamic model；
A kind of larger fish according to claim 1 suitable for HYDRODYNAMIC CONDITION RELATING TO research method, it is characterised in that step 2
In, measured profile HYDRODYNAMIC CONDITION RELATING TO requires to measure each layer HYDRODYNAMIC CONDITION RELATING TO of section using doppler velocimeter.
3. a kind of larger fish according to claim 1 is suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, it is characterised in that step 3
In, it is desirable that the position of the Fish of interest signal of monitoring is recorded, while recording the hydrographic features such as flow, water level when finding the signal
And the aerial drainage mode information of water outlet.
4. a kind of larger fish according to claim 1 is suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, it is characterised in that step 4
In, it is desirable that calculate the HYDRODYNAMIC CONDITION RELATING TO value of each Fish of interest signal position.
5. a kind of larger fish according to claim 1 is suitable for the research method of HYDRODYNAMIC CONDITION RELATING TO, it is characterised in that step 7
In, every year in the specific period, Fish of interest is monitored, monitoring once can be primary to modified result.
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| CN201810196383.2A CN108536910B (en) | 2018-03-09 | 2018-03-09 | Research method for hydraulic conditions of large fishes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359415A (en) * | 2019-07-10 | 2019-10-22 | 中国水利水电科学研究院 | A kind of fish pass based on individual mode crosses fish analogy method |
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| CN107609290A (en) * | 2017-09-22 | 2018-01-19 | 长江水利委员会长江科学院 | A kind of river ecological flow using benthon diversity as target determines method |
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| CN102907355A (en) * | 2012-10-08 | 2013-02-06 | 三峡大学 | Protection method for Chinese sturgeon eggs |
| CN103190365A (en) * | 2013-04-02 | 2013-07-10 | 河海大学 | Yangtze River endemic fish oviposition habitat monitoring method and system based on Internet of things |
| CN107506909A (en) * | 2017-08-07 | 2017-12-22 | 河海大学 | The step reservoir GROUP OF HYDROPOWER STATIONS Dispatching Control System and method of Habitat for Fish protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359415A (en) * | 2019-07-10 | 2019-10-22 | 中国水利水电科学研究院 | A kind of fish pass based on individual mode crosses fish analogy method |
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