CN109272250A - A kind of flood storage water logging control effect appraisal procedure for the sinking land in coalmining areas - Google Patents
A kind of flood storage water logging control effect appraisal procedure for the sinking land in coalmining areas Download PDFInfo
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Abstract
The invention discloses a kind of flood storage water logging control for the sinking land in coalmining areas to act on appraisal procedure, it includes the following steps S1-S10, mainly for the research of sinking land in coalmining areas flood storage water logging control effect, determine the historical experiences situation of waterlogging and outer flood, and carry out row's frequency analysis, determine waterlogging and outer flood all unfavorable combination time, and select it is therein represent the time as analysis and assessment use；Evaluation is made to water logging control effect again, is finally assessed for the capacity of flood storage of typical flood, on the basis of water logging control recruitment evaluation, the stagnant storage capacity of storage still more than needed during area's water logging control of analyzing and researching stores the basis of stagnant outer big vast potentiality as assessment, and determines the capacity of flood storage in depression depression.
Description
Technical field
The present invention relates to hydrotechnics fields, and in particular to a kind of flood storage water logging control effect assessment side for the sinking land in coalmining areas
Method.
Background technique
In progress of coal mining, after when goaf, area is expanded to a certain range, strata movement develops to earth's surface, earth's surface
It is settled downwards from original absolute altitude, causes subsidence, to form one bigger than goaf area obtain in above goaf earth's surface
More sunken regions.Depression depression flood storage and detention excess water ability is studied, " shutdown is flooded " problem of Huai He Middle Reaches waterlogging is directed to.It is heavy
Basin locating for area is fallen into due to hypsography low-lying, middle reaches flood passage is unsmooth, meets the flood time in flood season in the past, the water level in river mainstream is often
Higher than tributary, so that the ponding in depression is hopeless in tributary, formed " shutdown is flooded "." shutdown is flooded " refers to flood season Huaihe River mainstream water
Position is higher than the phenomenon that along Huaihe River tributary water level, is up to one month as long as sometimes.Tributary flood water can not by the blocking of mainstream water level at this time
Gravity flow discharge, the gate of any water logging control design standard fail, unless branch flows into Huaihe River Kou Chu and has pump drainage pumping plant, it is otherwise all interior
Excess water can only be temporarily stored in branch fluid stream channel.The time of " shutdown is flooded " in this way is longer, and the risk that branch fluid stream channel Xu Di bursts occurs and gets over
Greatly.Therefore at generation " shutdown is flooded ", in the case where Subsidence Area entirety topography is sunk, depression makes flood to the large area of formation in flakes
Excess water has fixed storage space, and the effect of flood storage water logging control highlights.But lacks data are quantitatively evaluated at present, whether branch fluid stream channel
Just become the key of reply problem with enough stagnant abilities of storage.
Summary of the invention
For the above-mentioned deficiency of the prior art, the present invention provides a kind of flood storage water logging control effects for the sinking land in coalmining areas to comment
Estimate method.
To achieve the above object of the invention, the technical scheme adopted by the invention is as follows:
There is provided a kind of flood storage water logging control effect appraisal procedure for the sinking land in coalmining areas comprising following steps:
S1: the long serial precipitation data of precipitation station in collection research region, and research is acquired with the weighting of Thiessen polygon method
Areal rainfall in region；
S2: according to areal rainfall data, maximum in long series setting a period of time year by year drop is calculated with empirical Frequency calculating method
Water frequency, and row's frequency analysis is carried out, select Typical Year of the time of maximum precipitation as research precipitation；
S3: long series flood discharge data in collection research region calculate maximum flood in long serial set period of time year by year
Frequency is measured, and carries out row's frequency analysis, selects Typical Year of the maximum flood discharge time as research flood discharge；
S4: middle reaches flood season peak level, river downstream tributary warning line and river mainstream in collection research region
High water level, and comparative analysis is combined according to the magnanimity in the precipitation and step S3 for studying area in step S2, and to river
What middle reaches flood season peak level and super river downstream tributary warning line lasted duration and super river mainstream high water level lasts duration
It compares and analyzes, determines the Severity level of each research Typical Year；
S5: the year Characteristics of Precipitation of each Typical Year of comparative analysis analyzes the year the total precipitation and each moon rainfall distribution of Typical Year,
Determine the period on precipitation peak in Typical Year；
S6: the observation station river Zhong Ge magnanimity data and waterlevel data in collection research region, and draw river downstream tributary
Accumulative magnanimity graph, river downstream tributary stage hydrograph and river downstream branch flow into river mouth mainstream ga ge relation figure；
S7: the whole story moment of " shutdown is flooded " state is determined according to ga ge relation figure；
S8: according to the whole story moment of " shutdown is flooded " state in ga ge relation figure, add up water during calculating " shutdown is flooded "
The excess water amount that discharge, pumping plant pump drainage amount, the amount of overflowing, period peak level and the sinking land in coalmining areas retain under amount, gate；
S9: the amount of overflowing in Typical Year before and after Comprehensive Correlation determines whether the sinking land in coalmining areas has water logging control effect, and determines
Can the stagnant storage capacity of storage of each doab in the sinking land in coalmining areas in the research area and its distribution cope with each typical year flood.
Further, further include step S10: in step s 9, if storing stagnant storage capacity copes with typical year flood, calculating
Water logging control peak level during each Typical Year " shutdown is flooded " out, and corresponding corresponding storage capacity is calculated according to water logging control peak level；According to
Aggregate storage capacity and water logging control peak level correspond to storage capacity calculating can flood storage storage capacity.
Further, frequency analysis method are as follows: if having 30 daily precipitation of maximum of n, from big to small by the precipitation data of n
It is arranged successively as x1, x2, x3 ... xn, and accumulative frequency one by one, serial number are denoted as m, then rain frequency Pm=m/n+1.
Further, the whole story moment of " shutdown is flooded " state includes " shutdown is flooded " state start time and " shutdown is flooded " state
Release the moment；At the time of " shutdown is flooded " state start time is that flood season river mainstream water level is higher than water level in the tributary of river downstream,
At the time of " shutdown is flooded " status releasing moment is that flood season river mainstream water level is lower than water level in tributary.
Further, the maximum precipitation period is set in step 2 as 30 days, select maximum 5 years of precipitation as
Study the Typical Year of precipitation.
Further, maximum magnanimity calculates the period as 30 days, maximum 60 days or 90 days maximum in step 3, selects maximum
5 years as research flood discharge Typical Year.
Further, add up to come discharge under water, gate, pumping plant pump drainage amount, the amount of overflowing and period most during " shutdown is flooded "
High water level passes through MODCYCLE water circulation model and simulates to obtain；Discharge is by MODCYCLE water circulation model using flat under gate
Bottom weir flow calculation formula obtains.
Further, it for the digital elevation model (DEM) of 30m is basic document that conservation storage, which uses resolution ratio, is based on
Arcgis software platform calculates the numerical value of the DEM in following each time using SpatialAnalystTools tool；Again into one
Step finds out the area of various pieces sunken region using the statistical method in Arcgis；Each item in sinker area is calculated using GIS software
Area between isopleth is multiplied with the depression value of corresponding region, calculates Subsidence Area water storage volume.
The invention has the benefit that this programme be for the sinking land in coalmining areas flood storage water logging control effect research, first determine in
The historical experiences situation of flooded and outer flood, can by carrying out row's frequency analysis to waterlogging and outer flood historical experiences situation between the two,
Determine waterlogging and outer flood all unfavorable combination time, and select it is therein represent the time as analysis and assessment use；Again to water logging control
Evaluation is made in effect, specifically using Typical Year as research object, analyzes the Characteristics of Precipitation of each research Typical Year, and determine each typical case
The flood water process in flood time, then analyze and research the area sinking land in coalmining areas formation lake or depression system to " shutdown is flooded " water
Amount retains performance, and then the water logging control for area's difference confluence piece of analyzing and researching acts on and makes evaluation to water logging control effect；It is finally allusion quotation
The capacity of flood storage of type flood is assessed, on the basis of water logging control recruitment evaluation, the stagnant storage capacity of storage still more than needed during area's water logging control of analyzing and researching,
The basis of stagnant outer big vast potentiality is stored as assessment, and determines the capacity of flood storage in depression depression.
By potentially storing stagnant construction using the sinking land in coalmining areas, local flood storage water logging control and water resource regulating space can be suited
Insufficient urgent need, goes after profits and advoids disadvantages, and while promoting Regional Economic Sustainable Development, improves Flood Control in Certain Area, water logging control and water
The ability of resource guarantee promotes the efficient utilization of water resource, and can a degree of improvement region environment.
The governance model feasibility is proved by the way that data are quantitatively evaluated, then can crack the coal field development that survey region faces
The quagmire contradicted with ecological environmental protection can also be the similar mining area in China by above-mentioned assessment result and the engineering advice of summary
Repairing and treating provide reference, generate important society, economy and zoology benifit, have very high more practical value.
Detailed description of the invention
Fig. 1 is the flow chart that appraisal procedure is acted on for the flood storage water logging control of the sinking land in coalmining areas.
Fig. 2 is that Huai He Middle Reaches flood and research area's rain frequency meet with analysis chart.
Fig. 3 is all previous great flood Huai He Middle Reaches Fengtai-gorge mountain pass station flood level.
Fig. 4 is western Fei river in Anhui Province confluence piece difference typical flood fraction of the year monthly total precipitation.
Fig. 5 is the river of good fortune forever/frame river confluence piece difference typical flood fraction of the year monthly total precipitation.
Fig. 6 is mud Heihe confluence piece difference typical flood fraction of the year monthly total precipitation.
Fig. 7 is that lake " shutdown is flooded " period flood season Hua Jia in 1991 and accumulation carry out water.
Fig. 8 is that mud river and lake " shutdown is flooded " period flood season in 1991 and accumulation carry out water.
Fig. 9 is that flood season north of the city lake " shutdown is flooded " period in 1991 and accumulation carry out water.
Figure 10 is that lake " shutdown is flooded " period flood season Hua Jia in 2003 and accumulation carry out water.
Figure 11 is that mud river and lake " shutdown is flooded " period flood season in 2003 and accumulation carry out water.
Figure 12 is that flood season north of the city lake " shutdown is flooded " period in 2003 and accumulation carry out water.
Figure 13 is Flood Series In Huaihe River Basin range schematic diagram in 2003.
Figure 14 is that lake " shutdown is flooded " period flood season Hua Jia in 2007 and accumulation carry out water.
Figure 15 is that mud river and lake " shutdown is flooded " period flood season in 2007 and accumulation carry out water.
Figure 16 is that flood season north of the city lake " shutdown is flooded " period in 2007 and accumulation carry out water.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
For the present embodiment as survey region by taking Basin of Huaihe River as an example, Basin of Huaihe River is located in China's north-south climate zone of transition,
Climate change is complicated, and rainfall spatial and temporal distributions are uneven.Numerous tributaries are mostly fan-shaped braided drainage pattern structure in basin, and flood afflux is fast
Speed, flood are frequent.It records and counts according to historical document, the Yellow River takes for the 12 of Huaihe River initial stage, 13rd century by force, average every century-old generation floods
35 times；14, every century-old floods 75 times of the 15th century；Every century-old average hair in 16th century to 450 years of People's Republic of China's initial stage
Unboiled water calamity 94 times；Basin of Huaihe River occurs basin-wide tens of secondary with branch fluidity great flood altogether since the establishment of the nation, especially more with Huai He Middle Reaches
Seriously.Huainan coal-mining subsidence has formd scale and has stored stagnant storage capacity, and flood season flood storage water logging control potentiality highlight, can be to this conduct
Research area is assessed.
" flood storage water logging control effect " includes " flood storage " and " water logging control " double meaning in this programme, is separately being evaluated,
Wherein " flood storage effect " refers to that depression depression stores stagnant outer flood, the i.e. effect of survey region river mainstream flood；" water logging control effect "
Refer to that depression depression stores stagnant interior flood, i.e., the effect of flood water in research area.Water logging control effect in depression depression is that interior excess water is effective
Store stagnant ability firmly.
As shown in Figure 1, the flood storage water logging control effect for the sinking land in coalmining areas of Basin of Huaihe River is assessed and is analyzed comprising
Following steps:
S1: the long serial precipitation data of precipitation station in collection research region, and research is acquired with the weighting of Thiessen polygon method
Areal rainfall in region；
S2: according to areal rainfall data, calculating maximum 30 daily precipitations of long series year by year with empirical Frequency calculating method, and by precipitation
Data carry out row's frequency frequency analysis, select the maximum 5 years Typical Years as research precipitation.
S3: length series flood discharge data in collection research region calculate long serial maximum year by year 30, are 60 days maximum, most
Big flood discharge on the 90th, and flood discharge data are subjected to row's frequency frequency analysis, select the maximum 5 years typical cases as research flood discharge
Year.
As shown in Fig. 2, the frequency diagram of the maximum magnanimity on the 30th year by year of Huai He Middle Reaches Shandong estrade station 1951~2010 years, and
It is compared according between the 30 intra day ward frequencies maximum year by year of research 1951~2010 years precipitation datas in area statistics.By Fig. 1
Comparative analysis it is found that, nineteen sixty-eight, 2003 and in 1954 in 1956 in 1991 in 2007 totally 6 years for it is outer flood with waterlogging least
The time of benefit combination, in one's duty maximum 30 intra day ward of Qi Genian and Huai He Middle Reaches maximum 30 days, 60 days, flood on the 90th
The specific data and frequency of amount are as shown in table 1 below.
1 Huai He Middle Reaches flood of table and research area's precipitation meet with combinatory analysis table
As shown in Figure 3 and Table 1, due to " shutdown is flooded " really it is relevant be Huaihe River corresponding with outer magnanimity water level,
In addition to research precipitation and outer magnanimity will also study equivalent water level, Fig. 3 gives all previous flood time Huai He Middle Reaches Fengtai (gorge mountain
Mouthful) the flood level change procedure stood (near Xi Feihezha), and Huai He Middle Reaches flood season peak level, Huaihe River are given in table 1
Water level is more than that the western Fei river in Anhui Province downstream lake Hua Jia warning line (23.2m) lasts duration and when water level super 24m high water level in Huaihe River lasts
The data such as long.
S4: middle reaches flood season peak level, river downstream tributary warning line and river mainstream in collection research region
High water level, and it is combined comparative analysis after meeting with according to the flood discharge in the precipitation and step 3 for studying area in step 2, with
And duration and super river mainstream high water level are lasted to river middle reaches flood season peak level and super river downstream tributary warning line
It lasts duration to compare and analyze, the harmfulness height of each research Typical Year is ranked up.
As shown in table 1, in addition to 1954, the super lake the western Fei river in Anhui Province Hua Jia warning line of Huaihe River water level of other flood times lasts
At 1 month or so, therefore when endangering size progress initial characterization sequence to research area's generation " shutdown is flooded ", most with reference to research area
Big 30 daily precipitation and Huaihe River water level factor carry out initial characterization judgement.Ranking results should close the door within 1954 to flood harm maximum,
Because of the combination least favorable of flood discharge and precipitation outside the time Huaihe River.Although 2003 than maximum 30 intra day ward in 1991
It is slightly smaller, but the super 24m of Huaihe River water level in 2003 lasts 8 days more older than 1991, while the super 24m of Huaihe River water level in 1991 lasts centre
There is an interruption, studying flood in area can select a good opportunity the row of robbing, therefore endangering with 1991 compared within 2003 may more greatly；It is other to be ordered as
It is higher than 2007 within 1991；It is higher than within 2007 nineteen sixty-eight, nineteen sixty-eight is higher than 1956.
S5: to the year Characteristics of Precipitation of each Typical Year of comparative analysis, the year the total precipitation and each moon precipitation point of Typical Year is analyzed
Cloth determines the period on precipitation peak in Typical Year.
The confluence of the difference flood time three pieces as shown in the following table 2 and fig. 4 to fig. 6 distinguishes moon precipitation data, from rainfall distribution spy
From the point of view of sign, main rainfall in 1991 occurred at 5,6,7 three months, and June is precipitation peak period.2003 and 2007 main drops
Water distribution all reached precipitation peak period, but precipitation specific gravity in 2003 is mainly biased to June and July at 6,7,8 three months in July,
And precipitation specific gravity in 2007 is mainly biased to July and August.Fragment precipitation is counted, the western Fei river in Anhui Province and the river of good fortune forever/frame river confluence piece drop
Water meets to be greater than 1991 for 2003, is greater than within 1991 rule in 2007, but mud Heihe confluence piece be 1991 about
2003, it is greater than 2007 within 2003.It can be seen that 1991 still have a bigger difference with the distribution of precipitation intensity in 2003,1991
Portion year by east, portion to the west in 2003.
2 typical flood fraction of the year monthly total precipitation tables of data of table
Since in Huai He Middle Reaches Area, waterlogging harm is mainly caused by " shutdown is flooded " flood amount, therefore sinking land in coalmining areas shape
At lake or depression water logging control effect, be mainly reflected in the flood amount during can completely retaining " shutdown is flooded ".Only need
According between water process statistics " shutdown is flooded " the state start time and " shutdown is flooded " status releasing moment in downstream lake come
Water can determine the flood process during " shutdown is flooded ".Pass through retaining for flood amount during " shutdown is flooded " and lake or depression
Situation can act on the water logging control in lake or depression and assess.
S6: the observation station river Zhong Ge magnanimity data and waterlevel data in collection research region, and draw river downstream tributary
Accumulative magnanimity graph, river downstream tributary stage hydrograph and river downstream branch flow into river mouth mainstream ga ge relation figure.
S7: the whole story moment of " shutdown is flooded " state is determined according to ga ge relation figure；
S8: according to the whole story moment of " shutdown is flooded " state in ga ge relation figure, add up water during calculating " shutdown is flooded "
Discharge, pumping plant pump drainage amount, the amount of overflowing, period peak level under amount, gate；And then calculate the excess water amount that the sinking land in coalmining areas retains；
Add up to come discharge under water, gate, pumping plant pump drainage amount, the amount of overflowing, period peak level and is all from MODCYCLE water circulation model
Simulation obtains, but data are not limited thereto model calculating, and during which accumulation carrys out water and studies area basin water according to daily
It is superimposed, discharge is obtained by MODCYCLE water circulation model using flat weir flow calculation formula under gate.
S9: the amount of overflowing in Typical Year before and after Comprehensive Correlation determines whether the sinking land in coalmining areas has water logging control effect, and determines
Can the stagnant storage capacity of storage of each doab in the sinking land in coalmining areas in the research area and its distribution cope with each typical year flood.
S10: in step s 9, if storing stagnant storage capacity copes with typical year flood, it is determined that each Typical Year " shutdown is flooded " phase
Between water logging control peak level, and corresponding corresponding storage capacity is determined according to water logging control peak level, then according to aggregate storage capacity and water logging control highest
Water level corresponds to storage capacity determination can flood storage storage capacity.
It for the digital elevation model (DEM) of 30m is basic document that conservation storage, which uses resolution ratio, in this programme, is based on
Arcgis software platform can calculate the numerical value of the DEM in following each time using tools such as SpatialAnalystTools.
Further using the statistical method in Arcgis, the area of various pieces sunken region is found out；Using in GIS software
The functions such as Calculate Geometry calculate the area between the isopleth of each of sinker area, the depression value phase with corresponding region
Multiply, it can calculate Subsidence Area water storage volume.
Frequency analysis method in this programme are as follows: if having 30 daily precipitation of maximum of n, from big to small by the precipitation data of n
It is arranged successively as x1、x2、x3……xn, and accumulative frequency one by one, serial number m, then rain frequency Pm=m/n+1.
The whole story moment of " shutdown is flooded " state includes " shutdown is flooded " state start time and " shutdown is flooded " status releasing moment,
At the time of " shutdown is flooded " state start time is that flood season river mainstream water level is higher than water level in the tributary of river downstream, " shutdown is flooded " shape
At the time of the state releasing moment is that flood season river mainstream water level is lower than water level in tributary.
As shown in Figure 7 to 9, each lake level (interior water) change procedure line, lake during giving typical flood in 1991
Moor accumulation magnanimity (water) graph into the Huaihe River Kou Chu, Huaihe River water level (outer water) change procedure line and from June 1st, 2003.
At the time of wherein " shutdown is flooded " state start time is that flood season Huaihe River water level is higher than water level in lake, when " shutdown is flooded " status releasing
At the time of quarter is that flood season Huaihe River water level is lower than water level in lake.
As shown in table 3 below, under depression scene in 2010, area is studied in typical flood in 1991 and forms " shutdown is flooded " state phase
Between always accumulation come water be 8.02 hundred million m3, pass through 3.1 hundred million m of pumping plant pump drainage3, 1.53 hundred million m are let out under gate3, remaining water relies primarily on
The storage capacity in lake or depression is retained, and counting the excess water amount retained is 2.85 hundred million m3.From water logging control effect, depression in 2010
The stagnant storage capacity of storage and its distribution that area is studied under scene still cannot completely cope with typical flood in 1991, because other than mud river and lake,
Its water level reaches maximum allowable water storage level during the lake Hua Jia piece and north of the city lake " shutdown is flooded ", leads to occur overflowing draining.Statistics
The displacement that overflows be about 0.52 hundred million m3.It should be noted that the lake Hua Jia piece is in " shutdown is flooded " period, the corresponding Huaihe River of sluice gate
Water level has the decline of general 10 days or so short durations, forms the chance that Xi Feihezha robs row, therefore have one during shutdown is flooded
Water is determined by letting out under gate.
The water logging control amount simulation assessment (2010 depression) of 3 1991 years typical floods of table
As shown in Figure 10 to Figure 12, each lake level (interior water) change procedure line, lake enter during typical flood in 2003
The Huaihe River Kou Chu, Huaihe River water level (outer water) change procedure line and accumulation magnanimity (water) graph from June 1st, 2003.It is as follows
Shown in the data of table 4, under depression scenes in 2010, research area always tires out during typical flood in 2003 forms " shutdown is flooded " state
It is 7.65 hundred million m that product, which carrys out water,3, 2.53 hundred million m of pumping plant pump drainage3, the excess water amount that lake or depression retain is 3.89 hundred million m3.With 1991
Typical flood, from water logging control effect, the stagnant storage capacity of storage and its distribution that area is studied under depression scene in 2010 cannot still be coped with
Typical flood in 2003 essentially consists in the lake Hua Jia piece and water occurs due to retaining insufficient space and overflows.Typical flood year in 2003
Total amount of overflowing is 0.85 hundred million m3, greater than 1991 typical floods overflow 0.52 hundred million m3When scene, illustrate front progress " close
Door floods " judgement of flood when endangering size entry evaluation be correct.Although the lake piece of " shutdown is flooded " period Hua Jia in 1991 comes
Water was greater than 2003, and " shutdown is flooded " originated water level also above 2003 simultaneously, but " shutdown is flooded " had halfway due to 1991
The row's of robbing chance has let out 1.53 hundred million m by gate and at present3Excess water, so the final amount of overflowing is smaller.
The water logging control amount simulation assessment (2010 depression) of 4 2003 years typical floods of table
As shown in figure 13, the Flood Series In Huaihe River Basin range schematic diagram under the practical flood time in 2003 shows research in figure
Area position illustrates that practical time research area in 2003 has occurred and that serious flood there are the flooding area of large area.
As shown in Figure 14 to Figure 16, each lake level (interior water) change procedure line, lake enter during typical floods in 2007
The Huaihe River Kou Chu, Huaihe River water level (outer water) change procedure line and accumulation magnanimity (water) graph from June 1st, 2007.
As shown in table 5 below, under depression scene in 2010, area is studied in typical flood in 2007 and forms " shutdown is flooded " state phase
Between always accumulation come water be 5.19 hundred million m3, 1.20 hundred million m of pumping plant pump drainage3, the amount of retaining in lake or depression is 3.79 hundred million m3.Relatively
Typical flood in 2003,2007 typical flood " shutdown is flooded " last and be obviously shortened, this comes with waterlogging in 2007, and water is less, Huaihe River
River highstand, is shorter related.Only slightly overflow in typical flood " shutdown is flooded " period Hua Jia lake in 2007 0.02 hundred million m out3Water.
From water logging control effect, the stagnant storage capacity of storage and its distribution that area is studied under depression scene in 2010 can substantially cope with typical case in 2007
Flood.
The water logging control amount simulation assessment (2010 depression) of 5 2007 years typical floods of table
Under depression scenes in 2010, corresponding 1991,2003,2,007 3 typical floods, lake or depression are " shutdown is flooded "
The water logging control effect of period is respectively 2.85 hundred million m3, 3.89 hundred million m3With 3.79 hundred million m3.It finds under depression scene in 2010 simultaneously, research
The water logging control ability in area lake or depression cannot still cope with typical flood in 1991 and 2003, store stagnant insufficient space and occur mainly in west
Fei river in Anhui Province lower section.But research area can satisfy the water logging control demand of typical flood in 2007 substantially, result, it is believed that studying under tale quale
The water logging control ability in area lake or depression is about in 10~15 years one chance standards.
Flood storage potentiality refer to the potentiality that stagnant outer big vast (Huai River Flood) can be stored on the basis of lake or depression water logging control.Compare the western name of a river in Anhui Province
River is converged from the point of view of piece typical flood amount in 1991,2003, and lake or depression aggregate storage capacity are still not enough to complete " shutdown is flooded " period
Retain task, or even also overflow, therefore the two typical flood times are without flood storage potentiality；The typical flood time in 2007
Although can store excess water during receiving " shutdown is flooded " substantially, the lake Hua Jia peak level has reached the maximum allowable water storage level of 24.5m, simultaneously
Periphery also above the lake Hua Jia piece 24.27m is averaged ground elevation, therefore substantially also without flood storage potentiality.
The three pieces artificial depression depression, including Ding Jidong, the depression Ding Jixi, Gu Bei Gu Qiao etc. of good fortune river confluence piece forever, at present
Depression scale is very small, adds up to aggregate storage capacity only 0.35 hundred million m3, 0.12 hundred million m are only remained after deducting storage capacity shared by itself ponding of flood season depression3,
Flood storage is utilized and is had little significance；In addition north of the city lake itself is in the downstream in good fortune river confluence three depression of piece forever, between depression depression
Also without spaces union relationship, even if there is flood storage storage capacity in depression depression, if without corresponding engineering also utilize less than.
When the doab Ni He mud river piece allows water level control using 20.6m elevation as highest, the corresponding stagnant storage capacity of storage is
134650000 m3, the storage capacity that peak level has been used up during deducting three typical flood year water logging control, then typical flood flood storage in 1991
Potentiality are 0.18 hundred million m3, and typical flood year flood storage potentiality are 0.34 hundred million m3 within 2003, and typical flood year flood storage potentiality are within 2007
0.49 hundred million m3, as shown in table 6 below.It is above to calculate result explanation, under 2010 depression scenes the research river area Jin Ni confluence piece lake or
There are certain flood storage potentiality in depression, but using limited space, engineering utilization value is little.
Mud river piece flood storage potentiality computational chart under 6 2010 years depression scenes of table
Claims (8)
1. a kind of flood storage water logging control for the sinking land in coalmining areas acts on appraisal procedure, which comprises the following steps:
S1: the long serial precipitation data of precipitation station in collection research region, and survey region is acquired with the weighting of Thiessen polygon method
Interior areal rainfall；
S2: according to the areal rainfall data, maximum in long series setting a period of time year by year drop is calculated with empirical Frequency calculating method
Water frequency, and row's frequency analysis is carried out, select Typical Year of the time of maximum precipitation as research precipitation；
S3: long series flood discharge data in collection research region calculate maximum magnanimity frequency in long serial set period of time year by year
Rate, and row's frequency analysis is carried out, select Typical Year of the maximum flood discharge time as research flood discharge；
S4: middle reaches flood season peak level, river downstream tributary warning line and river mainstream Gao Shui in collection research region
Position, and comparative analysis is combined according to the magnanimity in the precipitation and step S3 for studying area in step S2, and to river middle reaches
Flood season peak level and super river downstream tributary warning line last duration and the duration that lasts of super river mainstream high water level carries out
Comparative analysis determines the Severity level of each research Typical Year；
S5: the year Characteristics of Precipitation of each Typical Year of comparative analysis is analyzed the year the total precipitation and each moon rainfall distribution of Typical Year, is determined
Precipitation rush hour section in Typical Year；
S6: the observation station river Zhong Ge magnanimity data and waterlevel data in collection research region, and it is accumulative to draw river downstream tributary
Magnanimity graph, river downstream tributary stage hydrograph and river downstream branch flow into river mouth mainstream ga ge relation figure；
S7: the whole story moment of " shutdown is flooded " state is determined according to the ga ge relation figure；
S8: according to the whole story moment of " shutdown is flooded " state in ga ge relation figure, add up to come water, lock during calculating " shutdown is flooded "
The excess water amount that door lower discharge, pumping plant pump drainage amount, the amount of overflowing, period peak level and the sinking land in coalmining areas retain；
S9: the amount of overflowing in Typical Year before and after Comprehensive Correlation determines whether the sinking land in coalmining areas has water logging control effect, and determines that this grinds
Can the stagnant storage capacity of storage and its distribution that each doab in the sinking land in coalmining areas in area be studied carefully cope with each typical year flood.
2. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that also wrap
It includes step S10: in step s 9, if storing stagnant storage capacity copes with typical year flood, calculating each Typical Year " shutdown is flooded " phase
Between water logging control peak level, and corresponding corresponding storage capacity is calculated according to water logging control peak level；According to aggregate storage capacity and water logging control peak level
Corresponding storage capacity calculating can flood storage storage capacity.
3. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that described
Frequency analysis method are as follows: if there is 30 daily precipitation of maximum of n, the precipitation data of n is arranged successively from big to small as x1、x2、
x3……xn, and accumulative frequency one by one, serial number are denoted as m, then rain frequency Pm=m/n+1.
4. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that described
The whole story moment of " shutdown is flooded " state includes " shutdown is flooded " state start time and " shutdown is flooded " status releasing moment；It is described " to close
Door flood " state start time be flood season river mainstream water level be higher than river downstream tributary in water level at the time of, it is described " shutdown is flooded "
At the time of the status releasing moment is that flood season river mainstream water level is lower than water level in tributary.
5. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that described
The maximum precipitation period is set in step 2 as 30 days, selects the precipitation maximum 5 years Typical Years as research precipitation.
6. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that described
Maximum magnanimity calculates the period as 30 days, maximum 60 days or 90 days maximum in step 3, selects maximum 5 years as research flood
The Typical Year of amount.
7. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that described
Add up to come discharge under water, gate, pumping plant pump drainage amount, the amount of overflowing and period peak level during " shutdown is flooded " to pass through
MODCYCLE water circulation model simulates to obtain；Discharge uses flat weir flow meter by MODCYCLE water circulation model under the gate
Formula is calculated to obtain.
8. the flood storage water logging control according to claim 1 for the sinking land in coalmining areas acts on appraisal procedure, which is characterized in that described
It for the digital elevation model (DEM) of 30m is basic document that conservation storage, which uses resolution ratio, is based on Arcgis software platform, is used
SpatialAnalystTools tool calculates the numerical value of the DEM in following each time；Further using the system in Arcgis
Meter method finds out the area of various pieces sunken region；The area between the isopleth of each of sinker area is calculated using GIS software,
It is multiplied with the depression value of corresponding region, calculates Subsidence Area water storage volume.
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