CN103424106A - River tidal bore automatic detection and real-time forecasting method based on water level and flow velocity - Google Patents

River tidal bore automatic detection and real-time forecasting method based on water level and flow velocity Download PDF

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CN103424106A
CN103424106A CN2013103791077A CN201310379107A CN103424106A CN 103424106 A CN103424106 A CN 103424106A CN 2013103791077 A CN2013103791077 A CN 2013103791077A CN 201310379107 A CN201310379107 A CN 201310379107A CN 103424106 A CN103424106 A CN 103424106A
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tidal bore
website
arrives
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CN103424106B (en
Inventor
孙映宏
刘轶
王瑞荣
姬战生
王英英
胡其美
章国稳
徐翠飞
王玉明
陈雪芹
孟健
李国强
陈巍莉
童览
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HANGZHOU HYDROLOGY AND WATER RESOURCES MONITORING STATION
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Abstract

The invention relates to a river tidal bore automatic detection and real-time forecasting method based on the water level and flow velocity. In the prior art, a single-signal river tidal bore automatic detection method is limited in detection capacity, inaccurate in detection and not high in precision. The river tidal bore automatic detection and real-time forecasting method comprises the steps of tidal bore automatic detection and real-time forecasting. In the tidal bore automatic detection step, when the water level is increased and increased continuously, the interval between the time when water level data start to be increased and the time when a corresponding tidal bore reaches the day before is larger than 24 hours, and a flow velocity meter measures whether the flow velocity flow direction is the reverse direction, whether a tidal bore reaches is judged. In the real-time forecasting step, according to the information of time when the corresponding tidal bore reaches all stations the day before and the information of real time when the tidal bore reaches downstream stations in the same day, the time when the radial bore reaches upstream stations is forecasted. The river tidal bore automatic detection and real-time forecasting method based on the water level and flow velocity is high in accuracy of tidal bore automatic detection, and solves the problem that forecasting methods are overly dependent on astronomical rules.

Description

A kind of river tidal bore based on water level and flow velocity detects and Real-time Forecasting Method automatically
Technical field
The invention belongs to the test technique automatic field, specifically a kind of river tidal bore based on water level and flow velocity detects and Real-time Forecasting Method automatically, can be used for river tidal bore monitoring and real-time prediction early warning automatically.
Background technology
The Qiantang River flows into the East Sea at Hangzhou Wan, and wide interior narrow outside river mouth, wide place reaches 100 kms, and narrow place only has several kms.Seawater has just entered Haikou, and the water surface is wide, and more more have to gush by the constraint of two sides, river landform, seawater and amass, and more long-pending higher, the river that flow out in the Qiantang River is in addition stopped, promotes again water level rise, as one upright waterwall.When the seawater of back constantly pours in, just form back rise and caught up with front wave, the grand scene of the folded wave of a wave, surging, spectacular, become the whole world the most grand maximum morning and evening tides.Meanwhile, Qianjiang tidewater volume people event was almost never stopped over the past thousands of years, and just have more than ten people because of the wrecked number of tidewater every year.For preventing Qiantang River tidewater volume people, local government and personage among the people have organized " crying out damp team " specially, and establish the warning poster at dangerous area, warn the visitor to take care.Although certain effect is arranged, Qiantang River tidewater " is eaten people's event " and is never stopped.Therefore, the early warning of river tidal bore monitoring and prediction is for protecting visitor and people across the Straits' life and the safety of property just to become very meaningful.
At present, the river tidal bore automatic testing method detectability of single signal is limited, also has the problems such as inaccurate, that precision is not high that detect.Such as, water-level gauge has been installed at each key position of the bank of Qiangtang River by Hangzhou hydrographic water resource monitoring master station.In the ordinary course of things, the variation by water level can detect tidal bore effectively automatically.But, due to the factor that has the other influences water level, such as upstream discharge water, heavy rain etc., only the variation judgement tidal bore by water level easily causes erroneous judgement.For the forecast of tidal bore, the method for forecast next day that Hangzhou hydrographic water resource monitoring master station being used at present, the Time Forecast tidal bore in this day that by tidal bore the previous day, arrives each website arrives the time of each website.The next day forecasting procedure according to being the astronomical rule of tide, but due to after tidal bore enters rivers, except the effect that is subject to astronomical rule, also be subject to the multiple factor integration impact such as upland water, wind-force, wind direction, air pressure, next day forecast can't solve the impact that the short term variations of these factors is brought effectively, therefore, the value of forecasting of this method is often unsatisfactory.
 
Summary of the invention
For the limitation of prior art, the invention provides a kind of river tidal bore based on water level and flow velocity and automatically detect and Real-time Forecasting Method.The variation that the present invention is based on water level and flow velocity realizes the automatic detection of tidal bore having improved widely accuracy.Simultaneously, the not good problem of the value of forecasting next day that Real-time Forecasting Method provided by the invention having solved.
The present invention includes tidal bore detects and real-time prediction two aspects automatically.
1. wherein, the tidal bore for k website automatically detects and comprises the steps:
Step 1: read real time water level data, current time
Figure 2013103791077100002DEST_PATH_IMAGE002
, judge whether waterlevel data increases; If waterlevel data does not increase, continue step 1; If waterlevel data increases, enter step 2.
Step 2: whether the interval that judges the time that current time and tidal bore the previous day arrive is greater than 24 hours; If interval is less than 24 hours, think that this waterlevel data increases not tidal bore and causes and (analyze from astronomical rule, within adjacent two days, corresponding tide differs about 24 hours 50 minutes, though river tidal bore has lost the astronomical characteristic of tide, but can not depart from tide more than 50 minutes), therefore go back to step 1; If interval is more than or equal to 24 hours, enter step 3.
Step 3: judge whether waterlevel data continues to increase; If waterlevel data not continues to increase, think that this waterlevel data increase causes (when tidal bore arrives, water level goes up and should be the process of continuous rise) by interference, therefore go back to step 1; If waterlevel data continues to increase, proceed to step 4.
Step 4:: according to current meter, judge that whether flow velocity is reverse: if flow velocity is not reverse, think that this waterlevel data increases not tidal bore and causes that (in without the tidal bore situation, Qiantang River river by upstream flow downstream; When tidal bore arrives, river flows to upstream by downstream, is also that flow velocity is reverse), go back to step 1; If flow velocity is reverse, is judged as tidal bore and arrives this website, the current time in recording step 1
Figure 804623DEST_PATH_IMAGE002
For tidal bore arrives time of k website .
2. known rivers have been set up
Figure 2013103791077100002DEST_PATH_IMAGE006
Individual website
Figure 2013103791077100002DEST_PATH_IMAGE008
, for the real-time prediction of tidal bore, comprise the steps:
Step 1: search the time that corresponding tidal bore the previous day (the corresponding diurnal tide of diurnal tide, the corresponding Evening Tide of Evening Tide) arrives each website
Figure 2013103791077100002DEST_PATH_IMAGE010
(wherein
Figure 2013103791077100002DEST_PATH_IMAGE012
For corresponding tidal bore the previous day arrives the
Figure 2013103791077100002DEST_PATH_IMAGE014
Individual website Time), corresponding tidal bore the previous day is from
Figure 2013103791077100002DEST_PATH_IMAGE018
Individual website arrives the
Figure 2013103791077100002DEST_PATH_IMAGE020
The time of individual website is
Figure 2013103791077100002DEST_PATH_IMAGE022
.
Step 2: when
Figure 2013103791077100002DEST_PATH_IMAGE024
Individual website
Figure 2013103791077100002DEST_PATH_IMAGE026
The judgement tidal bore arrives this website, records tidal bore and arrives the
Figure 306053DEST_PATH_IMAGE024
Individual website
Figure 23473DEST_PATH_IMAGE026
Time
Figure 2013103791077100002DEST_PATH_IMAGE028
.
Step 3: when
Figure 353436DEST_PATH_IMAGE014
Individual website The judgement tidal bore arrive this website ( ), record tidal bore and arrive the
Figure 865637DEST_PATH_IMAGE014
Individual website Time
Figure 269253DEST_PATH_IMAGE004
, and calculate this tidal bore from
Figure 2013103791077100002DEST_PATH_IMAGE032
Individual website arrives the
Figure 813498DEST_PATH_IMAGE014
The time of individual website
Figure 2013103791077100002DEST_PATH_IMAGE034
.
Step 4: calculate respectively prediction from the Individual website
Figure 498874DEST_PATH_IMAGE016
Arrive other each websites of upstream
Figure 2013103791077100002DEST_PATH_IMAGE036
Time
Figure 2013103791077100002DEST_PATH_IMAGE038
.(because the front and back river course situation of two days can be considered identical, its erosion and deposition changes and can ignore, and therefore front and back corresponding tidal bore in two days can be considered proportional relation in the travel-time of correspondent section).
Step 5: predict
Figure 108323DEST_PATH_IMAGE014
Individual website
Figure 569391DEST_PATH_IMAGE016
Each website of upstream
Figure 999236DEST_PATH_IMAGE036
Tidal bore be time of arrival
Figure 2013103791077100002DEST_PATH_IMAGE040
.
The invention has the beneficial effects as follows:
According to multiple condition (water level increases and continues to increase, waterlevel data start time of increasing be greater than 24 hours with the interval of the previous day corresponding tidal bore time of arrival, that current meter records flow velocity is reverse) the judgement tidal bore arrives, and increased the tidal bore accuracy of detection automatically.
2. arrive the temporal information of each website according to corresponding tidal bore the previous day, and the real-time information of tidal bore arrival on same day downstream website, the forecast tidal bore arrives the time of upstream stations, has solved forecasting procedure depending on unduly astronomical rule.
The accompanying drawing explanation
Fig. 1 is the automatic overhaul flow chart of tidal bore.
Fig. 2 is that schematic diagram is propagated in tidal bore.
Embodiment
Below in conjunction with accompanying drawing, method of the present invention is further described.
The present invention includes tidal bore detects and real-time prediction two aspects automatically.
1. wherein, be illustrated in figure 1 the automatic overhaul flow chart of tidal bore, comprise the steps: for automatic detection of the tidal bore of k website
Step 1: read real time water level data, current time
Figure 116227DEST_PATH_IMAGE002
, judge whether waterlevel data increases; If waterlevel data does not increase, continue step 1; If waterlevel data increases, enter step 2.
Step 2: whether the interval that judges the time that current time and tidal bore the previous day arrive is greater than 24 hours; If interval is less than 24 hours, think that this waterlevel data increases not tidal bore and causes and (analyze from astronomical rule, within adjacent two days, corresponding tide differs about 24 hours 50 minutes, though river tidal bore has lost the astronomical characteristic of tide, but can not depart from tide more than 50 minutes), therefore go back to step 1; If interval is more than or equal to 24 hours, enter step 3.
Step 3: judge whether waterlevel data continues to increase; If waterlevel data not continues to increase, think that this waterlevel data increase causes (when tidal bore arrives, water level goes up and should be the process of continuous rise) by interference, therefore go back to step 1; If waterlevel data continues to increase, proceed to step 4.
Step 4:: according to current meter, judge that whether flow velocity is reverse: if flow velocity is not reverse, think that this waterlevel data increases not tidal bore and causes that (in without the tidal bore situation, Qiantang River river by upstream flow downstream; When tidal bore arrives, river flows to upstream by downstream, is also that flow velocity is reverse), go back to step 1; If flow velocity is reverse, is judged as tidal bore and arrives this website, the current time in recording step 1
Figure 391351DEST_PATH_IMAGE002
For tidal bore arrives time of k website
Figure 972505DEST_PATH_IMAGE004
.
2. be illustrated in figure 2 tidal bore and propagate schematic diagram, has set up in the known Qiantang River
Figure 245354DEST_PATH_IMAGE006
Individual website
Figure 911959DEST_PATH_IMAGE008
, wherein
Figure 2013103791077100002DEST_PATH_IMAGE042
, the name of station of each website is as shown in table 1.
Table 1
Website Name of station The previous day, corresponding tidal bore arrived the respective site time
　
Figure 928457DEST_PATH_IMAGE026
 Dong Jiangzha
Figure 2013103791077100002DEST_PATH_IMAGE044
=2013-08-06 22:36
　
Figure DEST_PATH_IMAGE046
 22 workshop sections
Figure DEST_PATH_IMAGE048
=2013-08-06 23:24
　
Figure DEST_PATH_IMAGE050
 The salt official
Figure DEST_PATH_IMAGE052
=2013-08-06 23:48
　
Figure DEST_PATH_IMAGE054
 Six workshop sections
Figure DEST_PATH_IMAGE056
=2013-08-07 00:01
　
Figure DEST_PATH_IMAGE058
 Before storehouse
Figure DEST_PATH_IMAGE060
=2013-08-07 00:53
　 Seven forts
Figure DEST_PATH_IMAGE064
=2013-08-07 01:38
　
Figure DEST_PATH_IMAGE066
 Sluice gate
Figure DEST_PATH_IMAGE068
=2013-08-07 02:19
　 Hear the family weir
Figure DEST_PATH_IMAGE072
=2013-08-07 02:45
For 23 of the Qiantang River on Augusts 7th, 2013 to August, the real-time prediction of tidal bore of 3:30 process on the 8th comprises the steps:
Step 1: search the time that corresponding tidal bore the previous day (the corresponding diurnal tide of diurnal tide, the corresponding Evening Tide of Evening Tide, so corresponding tidal bore the previous day is that on August 6th, 2013 is to that Evening Tide of August 7 through the Qiantang River) arrives each website
Figure 797406DEST_PATH_IMAGE010
(wherein
Figure 506736DEST_PATH_IMAGE012
For corresponding tidal bore the previous day arrives the
Figure 395057DEST_PATH_IMAGE014
Individual website
Figure 277563DEST_PATH_IMAGE016
Time), the concrete time is as shown in table 1.Corresponding tidal bore the previous day is from Individual website arrives the
Figure 510278DEST_PATH_IMAGE020
The time of individual website is
Figure 885896DEST_PATH_IMAGE022
, for example, corresponding tidal bore the previous day is from
Figure 244196DEST_PATH_IMAGE024
Individual website
Figure 716765DEST_PATH_IMAGE026
(Dong Jiangzha) arrive
Figure DEST_PATH_IMAGE074
Individual website
Figure 702651DEST_PATH_IMAGE046
The time of (22 workshop section) is
Figure DEST_PATH_IMAGE076
It is 48 minutes; Corresponding tidal bore the previous day is from
Figure DEST_PATH_IMAGE078
Individual website
Figure 503248DEST_PATH_IMAGE050
(salt official) arrives
Figure DEST_PATH_IMAGE080
Individual website
Figure 665239DEST_PATH_IMAGE054
The time of (six workshop sections) is
Figure DEST_PATH_IMAGE082
It is 13 minutes; Corresponding tidal bore the previous day is from Individual website
Figure 824136DEST_PATH_IMAGE054
(six workshop sections) arrives Individual website
Figure 174346DEST_PATH_IMAGE066
The time of (sluice gate) is
Figure DEST_PATH_IMAGE086
Be 2 hours 18 minutes (138 minutes).
Step 2: when
Figure 137099DEST_PATH_IMAGE024
Individual website
Figure 256364DEST_PATH_IMAGE026
(Dong Jiangzha) the judgement tidal bore arrives this website, records tidal bore and arrives the
Figure 446037DEST_PATH_IMAGE024
Individual website
Figure 283543DEST_PATH_IMAGE026
(Dong Jiangzha) time
Figure DEST_PATH_IMAGE088
(2013 on August 7,23: 10, below all take this time expression way).
Step 3: when
Figure 725020DEST_PATH_IMAGE014
Individual website The judgement tidal bore arrive this website (
Figure 324946DEST_PATH_IMAGE030
), record tidal bore and arrive the Individual website Time , and calculate this tidal bore from
Figure 579636DEST_PATH_IMAGE032
Individual website arrives the The time of individual website
Figure 237330DEST_PATH_IMAGE034
.For example,, when Individual website (six workshop sections) judgement tidal bore arrives this website, records tidal bore and arrives the Individual website
Figure 899070DEST_PATH_IMAGE054
The time of (six workshop sections) is
Figure DEST_PATH_IMAGE090
, and calculate this tidal bore from
Figure 701941DEST_PATH_IMAGE078
Individual website
Figure 778481DEST_PATH_IMAGE050
(salt official) arrives
Figure 299593DEST_PATH_IMAGE080
Individual website
Figure 549308DEST_PATH_IMAGE054
The time of (six workshop sections)
Figure DEST_PATH_IMAGE092
Be (in the algorithm implementation, to have recorded tidal bore and arrived the in 12 minutes Individual website
Figure 740214DEST_PATH_IMAGE050
(salt official) time is
Figure DEST_PATH_IMAGE094
).
Step 4: calculate respectively prediction from the Individual website
Figure 739712DEST_PATH_IMAGE016
Arrive other each websites of upstream
Figure 579492DEST_PATH_IMAGE036
Time
Figure 997835DEST_PATH_IMAGE038
.(because the front and back river course situation of two days can be considered identical, its erosion and deposition changes and can ignore, and therefore front and back corresponding tidal bore in two days can be considered proportional relation in the travel-time of correspondent section).For example, the example in step 3 is follow-up is: calculate respectively prediction from the
Figure 227959DEST_PATH_IMAGE080
Individual website
Figure 85056DEST_PATH_IMAGE054
(six workshop sections) arrives other each websites of upstream
Figure DEST_PATH_IMAGE096
Time
Figure DEST_PATH_IMAGE098
, such as prediction from the
Figure 654709DEST_PATH_IMAGE080
Individual website (six workshop sections) arrives
Figure 286340DEST_PATH_IMAGE084
Individual website
Figure 619232DEST_PATH_IMAGE066
The time of (sluice gate) is
Figure DEST_PATH_IMAGE100
.
Step 5: predict Individual website
Figure 131433DEST_PATH_IMAGE016
Each website of upstream
Figure 398467DEST_PATH_IMAGE036
Tidal bore be time of arrival
Figure 535050DEST_PATH_IMAGE040
.For example, the example in step 4 is follow-up is: predict
Figure 876033DEST_PATH_IMAGE084
Individual website
Figure 134976DEST_PATH_IMAGE066
The tidal bore of (sluice gate) is time of arrival
Figure DEST_PATH_IMAGE102
.
This tidal bore arrives the
Figure 826988DEST_PATH_IMAGE084
Individual website
Figure 501683DEST_PATH_IMAGE066
The real time of (sluice gate) is
Figure DEST_PATH_IMAGE104
.Visible, when tidal bore arrives the
Figure 959822DEST_PATH_IMAGE080
Individual website When (six workshop sections), tidal bore is arrived to the
Figure 303395DEST_PATH_IMAGE084
Individual website
Figure 781781DEST_PATH_IMAGE066
The predicated error of (sluice gate) is 6 minutes, within the error range allowed in prediction.Along with tidal bore in the time
Figure DEST_PATH_IMAGE106
Arrive the
Figure DEST_PATH_IMAGE108
Individual website
Figure 300618DEST_PATH_IMAGE058
(before storehouse), to
Figure 635785DEST_PATH_IMAGE084
Individual website
Figure 302389DEST_PATH_IMAGE066
The predicted time of (sluice gate) is updated to
Figure DEST_PATH_IMAGE110
, error is reduced into 2 minutes; When tidal bore in the time Arrive the
Figure DEST_PATH_IMAGE114
Individual website (seven forts), to
Figure 689301DEST_PATH_IMAGE084
Individual website
Figure 195369DEST_PATH_IMAGE066
The predicted time of (sluice gate) is updated to
Figure DEST_PATH_IMAGE116
, error is reduced into 0.

Claims (1)

1. the river tidal bore based on water level and flow velocity detects and Real-time Forecasting Method automatically, comprises that tidal bore detects and real-time prediction two parts automatically, is characterized in that:
Described tidal bore detects specifically automatically:
Step 1-1: for k website, read real time water level data, current time
Figure 2013103791077100001DEST_PATH_IMAGE002
, judge whether waterlevel data increases; If waterlevel data does not increase, continue step 1-1; If waterlevel data increases, enter step 1-2;
Step 1-2: judgement current time
Figure 55324DEST_PATH_IMAGE002
Whether the time interval arrived with tidal bore the previous day is greater than 24 hours; If the time interval is less than 24 hours, think that this waterlevel data increases not tidal bore and causes, go back to step 1-1; If, interval greater than equaling 24 hours, enter step 1-3;
Step 1-3: judge whether waterlevel data continues to increase; If waterlevel data not continues to increase, think that this waterlevel data increase is caused by interference, goes back to step 1-1; If waterlevel data continues to increase, proceed to step 1-4;
Step 1-4: according to current meter, judge that whether flow velocity is reverse: if flow velocity is not reverse, think that this waterlevel data increases not tidal bore and causes, go back to step 1-1; If flow velocity is reverse, is judged as tidal bore and arrives this website, the current time in recording step 1-1
Figure 875513DEST_PATH_IMAGE002
For tidal bore arrives time of k website
Described real-time prediction is specifically: known rivers have been set up
Figure 2013103791077100001DEST_PATH_IMAGE006
Individual website
Figure 2013103791077100001DEST_PATH_IMAGE008
, for the real-time prediction of tidal bore, comprise the steps:
Step 2-1: search the time that corresponding tidal bore the previous day arrives each website
Figure 2013103791077100001DEST_PATH_IMAGE010
, corresponding tidal bore the previous day is from
Figure 2013103791077100001DEST_PATH_IMAGE012
Individual website arrives the
Figure 2013103791077100001DEST_PATH_IMAGE014
The time of individual website is
Figure DEST_PATH_IMAGE016
, wherein
Figure DEST_PATH_IMAGE018
For corresponding tidal bore the previous day arrives the
Figure DEST_PATH_IMAGE020
Individual website
Figure DEST_PATH_IMAGE022
Time,
Figure DEST_PATH_IMAGE024
Step 2-2: when
Figure DEST_PATH_IMAGE026
Individual website The judgement tidal bore arrives this website, records tidal bore and arrives the Individual website
Figure 419812DEST_PATH_IMAGE028
Time
Figure DEST_PATH_IMAGE030
Step 2-3: when Individual website
Figure 150800DEST_PATH_IMAGE022
The judgement tidal bore arrives this website, records tidal bore and arrives the Individual website Time
Figure 271837DEST_PATH_IMAGE004
, and calculate this tidal bore from Individual website arrives the
Figure 433828DEST_PATH_IMAGE020
The time of individual website
Figure DEST_PATH_IMAGE034
,
Figure DEST_PATH_IMAGE036
Step 2-4: calculate respectively prediction from the
Figure 636271DEST_PATH_IMAGE020
Individual website
Figure 920622DEST_PATH_IMAGE022
Arrive other each websites of upstream Time
Figure DEST_PATH_IMAGE040
,
Figure DEST_PATH_IMAGE042
Step 2-5: predict
Figure 208515DEST_PATH_IMAGE020
Individual website
Figure 905688DEST_PATH_IMAGE022
Each website of upstream
Figure 87270DEST_PATH_IMAGE038
Tidal bore be time of arrival
Figure DEST_PATH_IMAGE044
.
CN201310379107.7A 2013-08-27 2013-08-27 River tidal bore automatic detection and real-time forecasting method based on water level and flow velocity Active CN103424106B (en)

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Publication number Priority date Publication date Assignee Title
CN110412312A (en) * 2019-06-04 2019-11-05 浙江省水利河口研究院 A kind of calculation method of tidal bore flow velocity vertical characteristics
CN110412312B (en) * 2019-06-04 2021-05-11 浙江省水利河口研究院 Calculation method for tidal bore flow velocity vertical distribution

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