CN109284909A - The real-time security appraisal procedure of sea wall and dedicated unit - Google Patents
The real-time security appraisal procedure of sea wall and dedicated unit Download PDFInfo
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Abstract
The present invention discloses the real-time security appraisal procedure of sea wall and dedicated unit, it has an at least warning device, one computer, one hydrology acquisition device or storm-surge forecasting model, warning device overflows dike or inrush for sea wall to give warning in advance, the computer connection warning device, computer is also connected with hydrology acquisition device or receives storm-surge forecasting value, whether the hydrographic data or received tidal level and wave forecasting value that computer capacity acquires hydrology acquisition device carry out processing and according to the whether unrestrained dike of Judging index decision or inrush, the computer warning device according to result of decision control.The present invention can assess in real time the sea wall safety under storm surge action, realize the pre-alarm of sea wall safety, and alarm accuracy is high, to provide foundation for pre-cooling contingency management work, reduction Oceanic disasters loss.
Description
Technical field
The present invention relates to marine disaster prevention and reduction fields, and in particular to a kind of real-time security appraisal procedure of sea wall and dedicated dress
It sets.
Background technique
Typhoon Storm Surge Over (hereinafter referred ＂ storm tide ＂) is the high wind for being passed by by typhoon adjoint and air pressure cataclysm and drawn
The local sea concussion risen or aperiodicity increase (reduction) phenomenon extremely.Storm tide causes tidewater to overflow, destroy by rush of water sea wall, in turn
Cause coastal area flood damage, destructive power is very big, produces serious influence to coastal area.Improve Oceanic disasters risk prevention system
Ability reduces casualty loss degree, is always the emphasis of coastal area concern.
Sea wall is the important moisture-proof wave resistance barrier in coastal area, can effectively resist the Marine Natural Disasters such as storm tide, is protected
The security of the lives and property for hindering maritime people is the lifeline of coastal area economy and society development.However, in especially big storm
Under tide effect, the destruction of sea wall is often difficult to escape by luck, and since storm tide and typhoon are more complicated to the failure mechanism of sea wall, removes
Have outside the Pass with Coastal Dynamic, also has direct relationship with sea wall design standard, structure type and locating geographical location.
Existing Oceanic disasters forecasting technique has had the prediction ability to the hydrodynamic forces factor such as tidal level, wave, and in wind
There has been no the Judging index that everybody unanimously approves to carry out early warning, Jin Erying in advance with method at present for sea wall safety under sudden and violent tide effect
Ring Oceanic disasters contingency management work.Therefore, under the conditions of storm tide, it is simultaneously quickly pre- how to carry out assessment in real time safely to sea wall
Sentence, early warning etc. is problem anxious to be resolved.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of real-time security assessment of sea wall
Method and dedicated unit.The invention can obtain tide before dike using hydrology acquisition device or storm tide (tidal level and wave) forecasting model
The hydrologic parameters such as position, wave propose the calculation method of Wave Overtopping over Seawalls amount, the overtopping wave threshold values that inrushes in conjunction with sea wall structure parameter,
It can be to storm by analyzing tidal level, sea wall wave barrier's elevation, Wave Overtopping over Seawalls amount, the relativity for the parameters such as overtopping wave threshold values that inrush
Tide effect under sea wall security risk assessed, judged, thus, the real-time early warning report of sea wall safety is realized, to open in advance
Dynamic contingency management work reduces Oceanic disasters loss offer practical technique.
The technical solution that the present invention is taken to achieve the above object are as follows:
The real-time security appraisal procedure of sea wall and dedicated unit, including an at least warning device, a computer, a hydrology acquisition device
Or storm tide (tidal level and wave) forecasting model, warning device overflows dike or inrush for sea wall to give warning in advance, computer connection report
Alarm device, the also hydrographic data of reception hydrology acquisition device or reception storm tide (tidal level and wave) predicted value, computer capacity pair
The hydrographic data of hydrology acquisition device acquisition or received tidal level and wave forecasting value carry out processing and according to Judging index decision
Whether overflow dike or whether inrushes.
Preferably, hydrology acquisition device includes: wave instrument, tide gauge, air speed measuring apparatus.
Preferably, hydrographic data includes: wave height, wavelength, wave period, wave direction, tidal level, air speed data.
Preferably, the connection type between computer and the warning device, hydrology acquisition device includes cable connection
Or radio connection or optical coupling connect.
Preferably, warning device is acoustic-optic alarm.
Preferably, warning device is multimedia message alarming device.
The step of sea wall real-time security appraisal procedure includes: that storm tide overflows dike risk assessment (S1), storm tide inrushes risk
It assesses (S2).
Storm tide overflows dike risk assessment (S1):
A, the sea wall for choosing a certain sea area, obtains the wave barrier's elevation of sea wall；
B, by hydrology acquisition device obtain assessment sea area dike before tidal level, or by storm tide tide prediction model obtain dike before
Tide prediction value；
C, the sea wall wave barrier's elevation that the program tidal level that obtains step b and step a stored by computer obtains carries out pair
Than assessing whether unrestrained dike according to comparing result.
Storm tide inrushes risk assessment (S2):
A. the sea wall for choosing a certain sea area obtains the structural parameters of sea wall；
B. computer obtains wave, tidal level, wind speed parameter before the dike for assessing sea area by hydrology acquisition device, or passes through storm tide
(tidal level and wave) forecasting model obtains wave, tidal level, wind speed forecasting value before dike, calculates Wave Overtopping over Seawalls amount in conjunction with modular formula.
For the overtopping volume on sloping breakwater amount calculation formula with breastwork are as follows:
In formula: the wide overtopping wave (m of Q unit time unit dike3/m·s)；Hc' height (m) of the breastwork wall top more than standing level；
H1/3Significant wave wave height (m)；b1Shoulder breadth (m) before breastwork；B design factor；KAPavement structure influences coefficient；TpThe spectral peak period (s)；m
Ramp slope coefficient, ramp slope 1:m；The depth of water (m) before d building；G acceleration of gravity (m/s2)；
For upstanding bank calculation formula are as follows:
Under calm condition:
In formula: A, B is the coefficient value on the upright pool, and T is wave period,For mean wave height (m) before dike,For wave steepness before dike, KΔ
For the roughness and permeability coefficient of pavement structure；
The overtopping wave for having wind is the overtopping wave correction factor K' with fair wind under calm condition:
In formula, QUOTE WfWfDepending on the coefficient of wind speed, value are as follows:
QUOTEW between three wind speed abovefWfValue is acquired according to wind speed with linear interpolation, and QUOTE θ θ is that sea wall faces tide
Side slope slope angle (°), R are climb value (m) of the wave on sea wall.
C, by calculator memory store up program obtained according to step a wave wall, levee crown width, the adverse grade gradient, meet tide
Face mask material parameters are calculated the overtopping wave threshold values that inrushes of sea wall by following table, the sea that inrush overtopping wave threshold values and step b are obtained
Dike overtopping wave compares, and carries out risk assessment.
Table 1a sea wall difference pavement structure inrushes overtopping wave threshold value
Note: the overtopping wave threshold value that inrushes in table is to meet damp face with sea wall to have preferable protection, and wave wall structure is relatively firm and sea wall is whole
Premised on body has good maintenance, if head sea face and wave wall structure of sea wall itself is thiner or have daily damage phenomenon,
Then sea wall may burst in advance；Sea wall sectional form is corresponded in table as composite sloped dike, inner slope gradient 1:2, levee crown outer rim is set
Wave wall, other sectional forms should rationally be corrected with reference to lower two table.
Table 1b wave wall altitude correction factor
Table 1c adverse grade gradient correction factor
Preferably, sea wall structure parameter includes that the sea wall adverse grade gradient, levee crown width, wave wall height, mask material, mask are rough
Shoulder breadth, ramp slope coefficient before height on standing level of rate, mask permeability coefficient, breastwork wall top, breastwork.
Compared with prior art, due to present invention employs computer technology, effectively increase technical solution monitoring and
Forecast function, accuracy is high, can accurately obtain according to hydrologic regime and sea wall structure using the computer program that this method is worked out
Tidal level, Wave Overtopping over Seawalls amount before dike, inrush the parameters such as overtopping wave threshold value, and then the safety of sea wall is assessed and prejudged, and is controlled
Warning device processed carries out pre-alarm.Therefore, the present invention is realized using tidal level, wave etc. as the major impetus factor in advance to sea wall
Whether can occur that unrestrained dike, bursting carries out the function of early warning, to reduce storm surge disaster risk, start contingency management work in time and mentions
Effective way is supplied.
The real-time security appraisal procedure of sea wall and dedicated unit provided present invention employs above-mentioned technical proposal compensates for existing
There are the deficiency of technology, reasonable design, easy operation.
Detailed description of the invention
Fig. 1 is the real-time security appraisal procedure overall procedure schematic diagram of sea wall of the present invention；
Fig. 2 is Wave Overtopping over Seawalls of embodiment of the present invention amount main affecting factors schematic diagram；
Fig. 3 is the brief flow diagram of computer program of the embodiment of the present invention；
Fig. 4 be computer of the present invention respectively with hydrology acquisition device or storm tide (tidal level and wave) forecasting model, warning device
Connection schematic diagram；
Description of symbols: 1. adverse grade masks；2. adverse grade gradient M；3. levee crown mask；4. wave wall；5. wave wall height H；6.
Meet damp mask；7. levee crown width B.
Specific embodiment
Present invention is further described in detail with attached drawing with reference to embodiments:
Embodiment 1:
The real-time security assessment dedicated unit of sea wall, including an at least warning device, a computer, a hydrology acquisition device or storm
Damp (tidal level and wave) forecasting model, warning device overflows dike or inrush for sea wall to give warning in advance, the computer connection report
Alarm device, the also hydrographic data of reception hydrology acquisition device or storm tide tidal level and wave forecasting value, computer capacity is to received
Whether hydrographic data or predicted value carry out processing and whether overflow dike according to processing result decision or inrush, and computer is according to decision knot
The fruit control warning device.
Computer connects between warning device, hydrology acquisition device respectively, as shown in figure 4, computer and warning device,
Connection type between hydrology acquisition device includes cable connection or radio connection or optical coupling connection.
Hydrology acquisition device includes: wave instrument, tide gauge, air speed measuring apparatus.
Hydrographic data includes: wave height, wavelength, wave period, wave direction, tidal level, air speed data.
Warning device is acoustic-optic alarm or multimedia message alarming device.
Embodiment 2:
Referring to Fig.1-2, by taking the sea wall of somewhere as an example, sea wall levee crown and adverse grade mask material are square concrete block (thick 30cm), gear
Unrestrained wall height is 1.0m, and the adverse grade gradient is 1:3, determines whether sea wall inrushes according to the tidal level of acquisition, wave data:
(1) according to step S2a, the structural parameters of sea wall are obtained；
(2) according to step S2b, using the hydrologic parameter of acquisition, calculating Wave Overtopping over Seawalls amount in conjunction with modular formula is 0.27m3/
(m.s)；
(3) according to step S2c, by table 1a it is found that the corresponding overtopping wave threshold value of bursting of square concrete block (thick 30cm) is
0.26m3/(m.s)；By table 1b wave wall correction factor it is found that wave wall height 1.0m, takes 1.0 herein；By the table 1c adverse grade gradient
Correction factor is it is found that 1:3 gradient correction value is 1.0, therefore overtopping wave threshold value of bursting is 0.26 × 1.0 × 1.0=0.26m3/
(m.s)。
(4) Wave Overtopping over Seawalls amount is 0.27m3/ (m.s), sea wall burst overtopping wave threshold value as 0.26m3/ (m.s), Wave Overtopping over Seawalls
Amount is greater than threshold value of bursting, and is determined as that sea wall inrushes.
Embodiment 3:
Computer program rate-determining steps are as follows:
S1a: sea wall parameter is read；
S1b: hydrologic parameter is read；
S1c: whether decision meets unrestrained dike condition, meets control warning device pre-alarm, is unsatisfactory for entering next step program；
S2b: overtopping wave is calculated；
S2c: whether decision meets the condition of inrushing, if it is satisfied, control warning device pre-alarm, is unsatisfactory for the step of repeating S1b,
Calculated result and storing data file are exported after alarm；Whether decision meets termination condition, meets EP (end of program), is unsatisfactory for repeating
S1b step.Its flow diagram is shown in Fig. 3.Its object is to accurately obtain tidal level, sea before dike according to hydrologic regime and sea wall structure
Dike overtopping wave, inrush the parameters such as overtopping wave threshold value, and then the safety of sea wall is assessed and prejudged, and control warning device into
Row pre-alarm, so that whether realize using tidal level, wave etc. as the major impetus factor can occur unrestrained dike to sea wall in advance, burst
The function of early warning is carried out, to reduce storm surge disaster risk, starts contingency management work in time and provides effective way.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, the ordinary skill people of this field
Member can also make a variety of changes and modification without departing from the spirit and scope of the present invention.Therefore, all equivalent
Technical solution also belong to scope of the invention, scope of patent protection of the invention should be defined by the claims.
Claims (7)
1. the real-time security assessment dedicated unit of sea wall, it is characterised in that: including an at least warning device, a computer, a hydrology
Acquisition device or storm-surge forecasting model, warning device overflows dike or inrush for sea wall to give warning in advance, described in computer connection
Warning device, computer are also connected with hydrology acquisition device or receive storm tide tidal level and wave forecasting value, and computer capacity is to the hydrology
The hydrographic data or received tidal level and wave forecasting value of acquisition device acquisition carry out processing and according to Judging index decision whether
Whether unrestrained dike inrushes, the computer warning device according to result of decision control.
2. the real-time security assessment dedicated unit of sea wall according to claim 1, it is characterised in that: hydrology acquisition device packet
It includes: wave instrument, tide gauge, air speed measuring apparatus.
3. the real-time security assessment dedicated unit of sea wall according to claim 1, it is characterised in that: the hydrographic data packet
It includes: wave height, wavelength, wave period, wave direction, tidal level, air speed data.
4. the real-time security assessment dedicated unit of sea wall according to claim 1, it is characterised in that: the computer and institute
Connection type between the warning device stated, hydrology acquisition device includes cable connection or radio connection or optical coupling connection.
5. the real-time security assessment dedicated unit of sea wall according to claim 1, it is characterised in that:
Preferably, the warning device is acoustic-optic alarm；
Preferably, the warning device is multimedia message alarming device.
6. the real-time security appraisal procedure of sea wall, which is characterized in that the appraisal procedure step includes: that the unrestrained dike risk of storm tide is commented
Estimate (S1), storm tide inrushes risk assessment (S2)；
Storm tide overflows dike risk assessment (S1):
A, the sea wall for choosing a certain sea area, obtains the wave barrier's elevation of sea wall；
B, by hydrology acquisition device obtain assessment sea area dike before tidal level, or by storm tide tide prediction model obtain dike before
Tide prediction value；
C, the sea wall wave barrier's elevation that the program tidal level that obtains step b and step a stored by computer obtains carries out pair
Than assessing whether unrestrained dike according to comparing result；
Storm tide inrushes risk assessment (S2):
A. the sea wall for choosing a certain sea area obtains the structural parameters of sea wall；
B. computer obtains wave, tidal level, wind speed parameter before the dike for assessing sea area by hydrology acquisition device, or passes through storm tide
(tidal level and wave) forecasting model obtains wave, tidal level, wind speed forecasting value before dike, calculates Wave Overtopping over Seawalls amount in conjunction with modular formula；
C, the wave wall that is obtained by the program that calculator memory stores up according to step a, the adverse grade gradient, meets damp face shield at levee crown width
Face material parameters, the overtopping wave threshold values that inrushes of sea wall is calculated by following table, and the overtopping wave threshold values that will inrush is got over the step b sea wall obtained
Wave amount compares, and carries out risk assessment；
Table 1a sea wall difference pavement structure inrushes overtopping wave threshold value
Note: the overtopping wave threshold value that inrushes in table is to meet damp face with sea wall to have preferable protection, and wave wall structure is relatively firm and sea wall is whole
Premised on body has good maintenance, if head sea face and wave wall structure of sea wall itself is thiner or have daily damage phenomenon, then
Sea wall may burst in advance；Sea wall sectional form is corresponded in table as composite sloped dike, inner slope gradient 1:2, levee crown outer rim sets gear
Unrestrained wall, other sectional forms should rationally be corrected with reference to lower two table；
Table 1b wave wall altitude correction factor
Table 1c adverse grade gradient correction factor
7. the real-time security appraisal procedure of sea wall according to claim 6, it is characterised in that: the sea wall structure parameter includes
The sea wall adverse grade gradient, levee crown width, wave wall height, mask material, mask roughness, mask permeability coefficient, breastwork wall top exist
Shoulder breadth, ramp slope coefficient etc. before height, breastwork on standing level.
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Cited By (12)
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| CN111560912A (en) * | 2020-04-09 | 2020-08-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for determining submerged dike elevation before closed artificial beach |
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