CN107764960A - Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique - Google Patents
Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique Download PDFInfo
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Abstract
Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique, this method is according to the general structure of underground power house and upper storage reservoir, to underground power house weir, be put in storage water, upper storehouse is around dam seepage flow, underground water, the water sample at gentle slope and storehouse week is acquired, while radon isotope in water sample is analyzed, Hydrogen-oxygen Isotope in water sample, chlorion, sulfate ion, nitrate ion concentration also carries out correlation analysis, wherein chlorion, sulfate ion, time point of the inspection result of nitrate ion concentration by the end of half a year, in order to more fully evaluate infiltration source, above content is analyzed in the lump.The Source Of Supply of water is investigated using the isotope fractionation principle of water, the composition of separate sources underground water in percolating water is distinguished, critical effect will be served for understanding the seepage field of dam exactly, determining whether there is leakage around dam passage.
Description
Technical field：
Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique
Background technology：
Upper storehouse, diversion steel pipe and the underground power house in power station are arranged in underground at present, the infiltration situation for underground power house
It is difficult to accurately detected by common detection method, it is therefore desirable to find one kind and be suitable for underground workshop seepage
The method of detection, the source of underground power house percolating water can be distinguished.
The content of the invention：
Goal of the invention：
Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique, the purpose is to solve conventional institute
The problem of existing.
Technical scheme：
Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique, it is characterised in that：This method
According to the general structure of underground power house and upper storage reservoir, to underground power house weir, storage water, upper storehouse around dam seepage flow, underground water, slow
Po Chu and storehouse week water sample be acquired, sampling point distributions are at gentle slope, at storage, at the well water of storehouse and around Ba Chu, sample man
Work lasts to gather 314 groups of a water sample altogether in about, according to the measurement result to each sampled point radon isotope content in water sample, before sampling
There is larger gap in radon contents afterwards, therefore measurement result is divided into two parts and analyzed；Radon is same in water sample in addition
While the element analysis of position, Hydrogen-oxygen Isotope, chlorion, sulfate ion, nitrate ion concentration in water sample also carry out correlation
Analysis, wherein the inspection result of chlorion, sulfate ion, nitrate ion concentration is by the end of the time point of half a year, in order to more
Comprehensive evaluation infiltration source, is analyzed above content in the lump.
It is multiple spot around Ba Chu, uniform distribution.
(1) radon isotope content analysis
First gather 199 groups of water sample, the sampled point of weir be defined as measuring point CWE01, CWE04, CWE07, CWE08,
CWE09, around dam, seepage flow sampled point is defined as measuring point HUP04, HUP06, HUP10；To the radon isotope in above-mentioned 199 groups of water samples
Content is measured,
Radon isotope content detection result is analyzed, sees if there is radon isotope content apparently higher than other sample point contents
In the presence of calculating each point radon isotope content and average value, then analyze whether this average value is by upper storage reservoir dam body seepage flow shadow
Caused by sound；
, radon isotope content in weir is compared with radon isotope content in upper storehouse water, sees 5 weirs and storehouse
Whether the radon isotope content year variation tendency in water is consistent substantially, while isotopic content detects, to each monitoring
The water level of point has done relative recording simultaneously,
Water temperature detection provides auxiliary for isotope detection, and the general morphologictrend of the temperature of water temperature measurement data can be from side
Reflect seepage paths relation；Relative to storehouse coolant-temperature gage, if weir CWE01 has uniformity on temperature measured value and changing rule,
Illustrate in the leakage radon water that CWE01 is collected, some region has seepage channel with upper pond；Remaining four weir water temperature is surveyed
Value it is larger with storehouse water difference, and year variable quantity it is little, the source that this phenomenon can not represent factory building leak is not upper water
Storehouse, influenceed by seepage flow approach, current temperature when being collected to weir can produce change；
The seepage source of underground power house includes underground water and surface water, is detected by radon isotope in early stage each monitoring point water
Interpretation of result, it is believed that in weir water sample radon contents with radon contents is in distribution and variation tendency at storage, at gentle slope
It is no to coincide substantially, and whether radon contents is much larger than weir in the well water of storehouse, in addition, temperature monitoring result is shown, weir CWE01
Whether uniformity is good with reservoir level temperature change, and whether measured value size approaches；Therefore oozing within this period factory building rock mass is judged
Whether whether leak obvious essentially from surface water, supply of the underground water to seepage source；
(2) chlorion, sulfate ion, nitrate ion concentration analysis
Counted according to Monitoring Result, determine weir chlorine ion concentration and surface water chlorine ion concentration；Underground water chlorine from
Whether sub- concentration is substantially lower than weir and surface water；Then weir sulfate ion concentration scope and surface water sulphur are counted
Whether acid ion concentration, the relative weir of surface water sulfate ion concentration fluctuation are smaller；Determine again underground water sulfate radical from
Sub- concentration；Determine weir nitrate ion concentration and surface water nitrate ion concentration again, surface water nitrate ion is dense
Whether degree is overlapping with weir ion concentration range；Underground water maximum nitrate ion concentration L is determined again；
It is as follows to Chloride Ion In Water early stage, sulfate ion and nitrate ion concentration analysis process：
(1) three kinds of ion concentration variability sizes in monitoring period of time in weir and surface water water sample, measured value either with or without
Occur compared with macromutation, it is big by external interference to illustrate whether whole sample phase weir and surface water quality are relatively stable
It is small, and if three kinds of ion concentration assay result stability are poor in underground water, it may be possible to due to the effect of human activity or
Precipitation before penetrates into soil and has fed underground water；
Whether surface water sample point at (2) two, i.e., monitor anion concentration time changing curve at storage and at gentle slope
It is overlapped, if chlorine ion concentration Mann-Whitney U examine P=0.815>0.05, illustrate that water body does not have notable area at two
Not, it is smaller by ectocine when water body is migrated between two sampled points；Three kinds of ion concentrations of underground water will integrally be much smaller than surface water,
There is good discrimination with surface water；
(3) examined using Mann-Whitney U methods, chlorine ion concentration and surface water in weir CWE01 and CWE09
Ion concentration is statistically either with or without obvious otherness, to show CWE01 and the CWE09 percolating water in sampling periods
Whether it is almost storehouse water entirely；Detected using same method, it is found that whether remaining weir has the feature of underground water, to show
Whether CWE04, CWE07, CWE08 infiltration include underground water in source；
(3) global analysis：
According to the statistics to whole sequence, the average value of radon contents in weir, about storehouse well water average value, upper storage reservoir are obtained
Be put in storage surface water radon contents average value at water and gentle slope；
From radon contents comparison, determine whether storehouse water is the main next of seepage from powerhouse；
In addition, having carried out coherent detection to the Hydrogen-oxygen Isotope in water sample, testing result is analyzed：
(1) weir, around four kinds of dam seepage flow hole, surface water, storehouse well water water sample δ18O~δ D component relationship is big with the whole world
The local meteoric water line correlation of gas precipitation line and Northeast Area of China is not notable, then shows as slope and intercept is widely different；
δ in four kinds of water samples18O~δ D composition has differences, and slope, the relative difference of intercept are more obvious, has distinction；
(3) such as δ in the well water of storehouse18O~δ D compositions change greatly, and isotopics scatterplot distribution is maximum, represents storehouse well
δ in water18There are the maximum of points and minimum point of all water body isotopics scatterplots in the scatterplot of O~δ D compositions；
(4) δ of weir and storehouse water18O~δ D compositions have good similitude, are embodied in the same of weir water body
Position element composition is located approximately on the isotopics line of storehouse water, the composition of isotope and weir water body in storehouse well water (underground water)
Middle isotopics relative different is larger, and it is larger to show as the slope relative different of both isotopics lines, explanatorily descends factory
Room percolating water mostlys come from storehouse water；
On the source of underground power house percolating water, mainly by weir, around dam seepage flow, storehouse well water (underground water) and enter
Storehouse goes out at (surface water) and gentle slope radon isotope content in (surface water) water sample and detected, while subsidiary to water sample temperature
Degree, Hydrogen-oxygen Isotope and chlorion, sulfate ion and nitrate ion concentration are detected；Radon isotope assay
As a result show, surface and ground water radon isotope content difference is very big within 2014, weir radon contents and earth's surface water content phase
Closely, storehouse water is the main source of seepage from powerhouse；Unilaterally from radon isotope content synthesis measuring interpretation of result, it is believed that seepage from powerhouse
Storehouse water occupies larger proportion in the source of water, and the alimentation of underground water can not be ignored；
Chlorion, sulfate ion and nitrate ion concentration measurement result analysis within the period in the first half of the year percolating water whether
Substantially from storehouse water, whether Characteristics of Groundwater has been found in remaining weir；Hydrogen-oxygen Isotope testing result shows, weir
With the δ in the water water sample of storehouse18Whether O~δ D compositions have a good similitude, in storehouse well water (underground water) composition of isotope and
Whether isotopics relative different is larger in weir water body, explanatorily to descend whether seepage from powerhouse water mostlys come from storehouse
Water.
Advantageous effect：
Anti- the characteristics of being impregnated with its own of underground engineering, the diversification in source of seeping water adds the difficulty of structure antiseepage, right
For Pumped Storage Plant Underground Powerhouse cavity group, it is considered that underground water and upper storage reservoir water are main supplies, and also
Need to consider rainwater deeply and many influences such as penstock leak.By thinking above to actual measurement water leakage,
Although current overall water leakage intuitively from the point of view of it is bigger than normal, substantially within design standard, before seepage field no longer changes
Put, the leakage under existing level is acceptable.But shorter based on Pu Shihe power stations completion run time, whether seepage field
Complete stability is currently not very clear, and on the one hand the main source of clear and definite percolating water will appreciate that in normal operation and leak
Aqueous condition, if the situation that leakage quantity increases suddenly on the other hand occurs, it can in time, accurately take and ooze control measure.
With reference to correlation engineering seepage analysis result, it is believed that collector drain infiltration in Pu Shihe factory buildings periphery has three kinds of sources：One
It is underground water, second, storehouse water, third, rain infiltration.But because underground chamber and the massif of collector drain overlying are rich, Line Integral
Cloth is larger, and water source supply is various, therefore is difficult that infiltration source and Source proportion are accurately divided using usual means
Analysis.Seepage of dam detection is an important content in hydraulic engineering investigation of hidden trouble, and environment isotope analysis method is applied to
The investigation in seepage of dam source is popularization and application of the nuclear technology in hydraulic engineering.Investigated using the isotope fractionation principle of water
The Source Of Supply of water, the composition of separate sources underground water in percolating water is distinguished, for understanding the seepage field of dam exactly, determining
Critical effect will be served with the presence or absence of leakage around dam passage.
Brief description of the drawings：
Fig. 1 is sampling point position；
Fig. 2 is that isotopic content determines block diagram；
Fig. 3 is each point radon isotope content year changing value deck watch；
Fig. 4 is water temperature detection graph；
Fig. 5 is chlorine ion concentration change procedure；
Fig. 6 is sulfate ion concentration change procedure；
Fig. 7 is nitrate ion concentration change procedure；
Fig. 8 is radon isotope graph containing measuring value；
Fig. 9 is water body Hydrogen-oxygen Isotope component relationship figure.
Embodiment：
The influence factor of Study of The Underground factory building Various Seasonal leakage change, is determined under Various Seasonal, shared by various infiltrations
Ratio, the regular change of infiltration is summarized, a set of seepage control method treated both principal and secondary aspect of disease is proposed, reaches and solve underground power house seepage
Purpose.
(1) by field test, the seepage source of Pu Shihe Pumped Storage Plant Underground Powerhouses is accurately found.
(2) seepage monitoring in recent years and field test achievement are combined, distinguishes main infiltration source, research infiltration becomes
Law；
(3) factory building is pacified by the analysis and research seepage Producing reason to the changing rule that seeps water and to current leakage scenarios
Umbra, which rings, carries out evaluation analysis；
(4) to proposing effective anti-seepage treatment at leak source and seepage from powerhouse EXIT POINT.
(5) to solve the problems, such as that similar engineering provides reference frame from now on.
1.1 main technical content
1.1.1 underground power house infiltration analysis on change and to factory building Evaluation of Safety
1.1.2 hydrogen and oxygen stable isotope tracer underground power house infiltration source is utilized
1.1.3 put down based on isotope hydrology balance discrimination underground power house different leakage source water ratio, isotope hydrology
Weighing apparatus fundamental equation quantizes
1.1.4 underground power house infiltration main source seepage control measure and solution formulation
1.2 technical difficult points
1.2.1 the restriction and influence of hydrogen and oxygen stable isotope seasonal variations and distribution on tracer
The Hydrogen-oxygen Isotope concentration of different depth changes in storehouse, isotope Various Seasonal by it is different it is meteorological because
The restrictive function of son, also results in the change of its concentration.The restrictive function of these conditions carries to the accuracy and accuracy of measurement
Requirement is gone out, it would be desirable to sampled point is rationally set in Various Seasonal and different depth, to reservoir, the river of recharge connection be present
Stream, underground water are monitored.
1.2.2 isotope hydrology balances quantizing for fundamental equation
The infiltration of underground power house causes the storehouse to be in leakage type Hu Tang, and the isotopic evolution relational theory to leakage type Hu Tang is ground
Study carefully relatively fewer, it is necessary to carry out integrating simplification with reference to other models, therefore, the foundation of isotope hydrology equilibrium equation needs to carry out
Substantial amounts of test simulation and analysis, establish the relation curve of isotopic content and storage capacity, and fit the optimal balance side of effect
Journey.
1.2.3 the water ratio discrimination of underground power house different leakage source and seepage control measure research, according to Pu Shihe undergrounds factory
The general structure in room and upper storage reservoir, to underground power house weir, storage water, upper storehouse are at dam seepage flow, underground water, gentle slope and storehouse is all
Water sample be acquired, sampling point position is as shown in Figure 1.Jiangsu river-and-harbour engineering Technology Co., Ltd. sampling work was from 2014 8
The moon starts on the 26th, and 314 groups of water sample is gathered altogether by the end of on June 15th, 2015.Contain according to each sampled point radon isotope in water sample
The measurement result of amount, there is larger gap in the radon contents before and after 2015, therefore measurement result is divided into two parts and divided
Analysis.In addition while radon isotope in water sample is analyzed, Hydrogen-oxygen Isotope, chlorion, sulfate ion, nitric acid in water sample
Ion concentration has also carried out the inspection result cut-off of correlation analysis, wherein chlorion, sulfate ion, nitrate ion concentration
To in December, 2014, in order to more fully evaluate infiltration source, above content is analyzed in the lump.
5.1 2014 years Analysis of test results
(1) radon isotope content analysis
August in 2014 26 days to gathering 199 groups of water sample during December 23 altogether, the sampled point of weir is measuring point CWE01,
CWE04, CWE07, CWE08, CWE09, it is measuring point HUP04, HUP06, HUP10 around dam seepage flow sampled point.To above-mentioned 199 groups of water
Radon isotope content in sample is measured, and testing result is as shown in Figure 2.
Radon isotope content detection result is analyzed, is intuitively seen by Fig. 2, HUP04 and HUP06 and the same position of storehouse water radon
Cellulose content is apparently higher than other sample point contents.Table 5.1-1 is that each sampled point detects radon contents average value, according to calculating, measures water
Radon isotope content is substantially in 20000Bq/m in sluice sample3Within, average value 1177.32Bq/m3, be put in storage content in current and put down
Average is 1566.02Bq/m3, both are more close.Around dam, seepage flow HUP09 and HUP10 content average value is respectively in addition
2696.68Bq/m3And 1218.88Bq/m3, for HUP04 and HUP06, this radon isotope at two of HUP09 and HUP10 contains
Amount is close with weir, and this is probably caused by by upper storage reservoir dam body seepage effect.
Table 5.1-1 radon isotope content average value units：Bq/m3
In order to further analyze the relation in factory building between percolating water and storehouse water, to radon isotope content in weir and upper storehouse
Radon isotope content is compared in water, and detection content value situation of change in 2014 is as shown in Figure 3.It can be seen that 5 weirs
Be consistent substantially with the radon isotope content year variation tendency in the water of storehouse, two in dam seepage monitoring amount, HUP10 change
Rule more suits with weir.While isotopic content detects, relative recording has been done simultaneously to the water level of each monitoring point,
Its measured value change in process situation is as shown in Figure 4.
Water temperature detection provides auxiliary for isotope detection, although water temperature measurement data can not draw accurate judgement, temperature
The general morphologictrend of degree can reflect seepage paths relation from side.In Fig. 4, relative to storehouse coolant-temperature gage, weir CWE01 surveys in temperature
There is uniformity on value and changing rule, illustrate in the leakage radon water that CWE01 is collected, some region has seepage flow with upper pond
Passage.Remaining four weir water temperature measured value and storehouse water difference are larger, and year variable quantity it is little, this phenomenon can not represent
The source of factory building leak is not upper pond, is influenceed by seepage flow approach, and current temperature when being collected to weir can produce change
Change.
The seepage source of underground power house includes underground water and surface water, by radon isotope in each monitoring point water in 2014
Analysis of test results, it is believed that in weir water sample at radon contents and storage, at gentle slope radon contents in distribution and variation tendency
On coincide substantially, and radon contents is much larger than weir in the well water of storehouse.In addition, temperature monitoring result is shown, weir CWE01 and storehouse
Water level temperature change uniformity is good, and measured value size approaches.Therefore judge the percolating water of the factory building rock mass within this period essentially from
Surface water, supply unobvious of the underground water to seepage source.
(2) chlorion, sulfate ion, nitrate ion concentration analysis
The sampled point Chloride Ion In Water on December 1st, 15 days 1 of August in 2014, sulfate ion and nitrate ion
Concentration is detected, and each sampled point three of the above ion concentration situation of change is as shown in Fig. 5, Fig. 6, Fig. 7.
Counted according to Monitoring Result, weir chlorine ion concentration is between 4.42~8.33mg/L；Surface water chlorion is dense
Degree is in 5.48~8.30mg/L；Underground water chlorine ion concentration is substantially lower than weir and surface water, October 27 institute's water sampling
Chlorine ion concentration is up to 13.22mg/L.Weir sulfate ion concentration scope is between 30.98~76.03mg/L；Earth's surface
For water sulfate ion concentration in 41.99~72.05mg/L, fluctuation of concentration is smaller with respect to weir；Underground water sulfate ion
Maximum concentration is only 6.06mg/L.Weir nitrate ion concentration is in 0.49~2.57mg/L；Surface water nitrate ion
Concentration is substantially overlapping with weir ion concentration range between 1.68~2.81mg/L；Underground water maximum nitrate ion is dense
Spend for 0.91mg/L.
Chloride Ion In Water in 2014, sulfate ion and nitrate ion concentration analysis result are summarized as follows：
(1) three kinds of ion concentration variability in monitoring period of time are small in weir and surface water water sample, and measured value does not occur
Compared with macromutation, illustrate that whole sample phase weir and surface water quality are relatively stable, it is smaller by external interference.And in underground water
Three kinds of ion concentration assay result stability are poor, it may be possible to which precipitation due to the effect of human activity or before penetrates into soil
Underground water is fed.
Surface water sample point monitors anion concentration time changing curve phase mutual respect at (2) two (at storage and at gentle slope)
Folded, chlorine ion concentration Mann-Whitney U examine P=0.815>0.05, illustrate that water body does not have significant difference at two, water body exists
It is smaller by ectocine when being migrated between two sampled points.Three kinds of ion concentrations of underground water will integrally be much smaller than surface water, with surface water
With good discrimination.
(3) examined using Mann-Whitney U methods, chlorine ion concentration and surface water in weir CWE01 and CWE09
Ion concentration statistically without obvious otherness, shows that CWE01 and the CWE09 percolating water in sampling periods are almost complete
It is storehouse water.Detected using same method, it is found that remaining weir has the feature of underground water, show CWE04, CWE07,
CWE08 infiltrations include underground water in source.
5.2 global analysis
Water sample detection analysis result in 2015 is shown in Fig. 8 by the end of June, the testing result to complete sequence in 2015 in 2014
It is shown.According to the statistics to whole sequence, the average value of radon contents is 1634Bq/m in weir3, storehouse well water average value
49979Bq/m3, 23 times of radon activity about in weir water sample, upper storage reservoir storage water and gentle slope at surface water radon contents be averaged
It is worth for 3575Bq/m3。
Before in October, 2014, underground water (storehouse well water) radon contents is horizontal substantially near surface water (storehouse water), October
After part storehouse water radon assay amount occur it is steep increase, and weir and be put in storage out and gentle slope at water determination content do not go out
Now change by a relatively large margin, therefore from radon contents comparison, it is believed that storehouse water is the main source of seepage from powerhouse.Measure knot in 2015
Fruit shows that the radon contents of four kinds of water samples has different degrees of increase, particularly CWE07 and CWE09 to rise to and storehouse well water phase
Near level, and storehouse well water measurement result changing rule and remaining measuring point are essentially identical, therefore the water sample detection knot of 2015
Supply coefficient increase of the underground water to seepage from powerhouse source in fruit.
In addition, having carried out coherent detection to the Hydrogen-oxygen Isotope in water sample, test result is as shown in Figure 9.By to detection
Thinking as a result：
(1) weir, around four kinds of dam seepage flow hole, surface water, storehouse well water water sample δ18O~δ D component relationship is big with the whole world
The local meteoric water line correlation of gas precipitation line and Northeast Area of China is not notable, shows as slope and intercept is widely different.Four
δ in kind water sample18O~δ D composition has differences, and slope, the relative difference of intercept are more obvious, has distinction.
(3) δ in the well water of storehouse18O~δ D compositions change greatly, and isotopics scatterplot distribution is maximum, can be seen in figure
Go out to represent δ in the well water of storehouse18There are the maximum of points and minimum value of all water body isotopics scatterplots in the scatterplot of O~δ D compositions
Point.
(4) δ of weir and storehouse water18O~δ D compositions have good similitude, are embodied in the same of weir water body
Position element composition is located approximately on the isotopics line of storehouse water, the composition of isotope and weir water body in storehouse well water (underground water)
Middle isotopics relative different is larger, and it is larger to show as the slope relative different of both isotopics lines, explanatorily descends factory
Room percolating water mostlys come from storehouse water.
Brief summary
On the source of underground power house percolating water, mainly by weir, around dam seepage flow, storehouse well water (underground water) and enter
Storehouse goes out at (surface water) and gentle slope radon isotope content in (surface water) water sample and detected, while subsidiary to water sample temperature
Degree, Hydrogen-oxygen Isotope and chlorion, sulfate ion and nitrate ion concentration are detected.Radon isotope assay
As a result show, surface and ground water radon isotope content difference is very big within 2014, weir radon contents and earth's surface water content phase
Closely, storehouse water is the main source of seepage from powerhouse.Unilaterally from radon isotope content 2014 and synthesis measuring result point in 2015
Analysis, it is believed that storehouse water occupies larger proportion in the source of seepage from powerhouse water, and the alimentation of underground water can not be ignored.
Chlorion, sulfate ion and nitrate ion concentration measurement result show, within the period in 2014 CWE01 and
For CWE09 percolating waters substantially from storehouse water, remaining weir is interior to find there is Characteristics of Groundwater.Hydrogen-oxygen Isotope testing result shows
Show, weir and the δ in the water water sample of storehouse18O~δ D, which are formed, has good similitude, the group of isotope in storehouse well water (underground water)
Into larger with isotopics relative different in weir water body, seepage from powerhouse water is explanatorily descended to mostly come from storehouse water.
To sum up think, the main source of underground power house percolating water is storehouse water, while underground occurs in indivedual weirs
The feature of water, show that underground water equally has certain alimentation to the seepage of factory building.
Claims (4)
1. Pumped Storage Plant Underground Powerhouse infiltration source method is surveyed based on isotope tracer technique, it is characterised in that：This method root
According to the general structure of underground power house and upper storage reservoir, to underground power house weir, storage water, upper storehouse around dam seepage flow, underground water, gentle slope
Place and storehouse week water sample be acquired, sampling point distributions are at gentle slope, at storage, at the well water of storehouse and around Ba Chu, sampling work
Last to gather 314 groups of a water sample altogether in about, according to the measurement result to each sampled point radon isotope content in water sample, before and after sampling
Radon contents larger gap be present, therefore measurement result is divided into two parts and analyzed；The same position of radon in water sample in addition
While element analysis, Hydrogen-oxygen Isotope, chlorion, sulfate ion, nitrate ion concentration in water sample also carry out related point
Analysis, wherein the inspection result of chlorion, sulfate ion, nitrate ion concentration is by the end of the time point of half a year, in order to more complete
The evaluation infiltration source in face, is analyzed above content in the lump.
2. according to claim 1 survey Pumped Storage Plant Underground Powerhouse infiltration source method based on isotope tracer technique,
It is characterized in that：It is multiple spot around Ba Chu, uniform distribution.
3. according to claim 1 survey Pumped Storage Plant Underground Powerhouse infiltration source method based on isotope tracer technique,
It is characterized in that：
(1) radon isotope content analysis
199 groups of water sample is first gathered, the sampled point of weir is defined as measuring point CWE01, CWE04, CWE07, CWE08, CWE09, around
Dam seepage flow sampled point is defined as measuring point HUP04, HUP06, HUP10；Radon isotope content in above-mentioned 199 groups of water samples is carried out
Measure,
Radon isotope content detection result is analyzed, sees if there is radon isotope content depositing apparently higher than other sample point contents
Each point radon isotope content and average value are being calculated, is then analyzing whether this average value is by upper storage reservoir dam body seepage effect
It is caused；
Radon isotope content in weir is compared with radon isotope content in upper storehouse water, seen in 5 weirs and storehouse water
Radon isotope content year variation tendency whether be consistent substantially, while isotopic content detects, to each monitoring point
Water level has done relative recording simultaneously,
Water temperature detection provides auxiliary for isotope detection, and the general morphologictrend of the temperature of water temperature measurement data can reflect from side
Seepage paths relation；Relative to storehouse coolant-temperature gage, if weir CWE01 has uniformity, explanation on temperature measured value and changing rule
In the leakage radon water that CWE01 is collected, there is seepage channel in some region with upper pond；Remaining four weir water temperature measured value with
Storehouse water difference is larger, and year variable quantity it is little, the source that this phenomenon can not represent factory building leak is not upper pond, by
The influence of seepage flow approach, current temperature when being collected to weir can produce change；
The seepage source of underground power house includes underground water and surface water, passes through radon isotope testing result in early stage each monitoring point water
Analysis, it is believed that in weir water sample at radon contents and storage, at gentle slope radon contents in distribution and variation tendency whether base
This coincide, and whether radon contents is much larger than weir in the well water of storehouse, in addition, temperature monitoring result is shown, weir CWE01 and storehouse
Whether uniformity is good for water level temperature change, and whether measured value size approaches；Therefore the percolating water of the factory building rock mass within this period is judged
It is whether obvious essentially from surface water, supply of the underground water to seepage source；
(2) chlorion, sulfate ion, nitrate ion concentration analysis
Counted according to Monitoring Result, determine weir chlorine ion concentration and surface water chlorine ion concentration；Underground water chlorion is dense
Whether degree is substantially lower than weir and surface water；Then weir sulfate ion concentration scope and surface water sulfate radical are counted
Whether ion concentration, the relative weir of surface water sulfate ion concentration fluctuation are smaller；Determine that underground water sulfate ion is dense again
Degree；Determine weir nitrate ion concentration and surface water nitrate ion concentration again, surface water nitrate ion concentration with
Whether weir ion concentration range is overlapping；Underground water maximum nitrate ion concentration L is determined again；
It is as follows to Chloride Ion In Water early stage, sulfate ion and nitrate ion concentration analysis process：
(1) three kinds of ion concentration variability sizes in monitoring period of time in weir and surface water water sample, measured value is either with or without generation
Compared with macromutation, to illustrate whether whole sample phase weir and surface water quality are relatively stable, by external interference size, and
If three kinds of ion concentration assay result stability are poor in underground water, it may be possible to due to the effect of human activity or before
Precipitation penetrates into soil and has fed underground water；
Whether mutual surface water sample point at (2) two, i.e., monitor anion concentration time changing curve at storage and at gentle slope
It is overlapping, if chlorine ion concentration Mann-Whitney U examine P=0.815>0.05, illustrate that water body does not have significant difference at two,
Water body is smaller by ectocine when being migrated between two sampled points；Three kinds of ion concentrations of underground water will integrally be much smaller than surface water, with
Surface water has good discrimination；
(3) examined using Mann-Whitney U methods, chlorine ion concentration and earth's surface water ion in weir CWE01 and CWE09
Concentration is statistically either with or without obvious otherness, to show whether CWE01 and the CWE09 percolating water in sampling periods are several
It is storehouse water entirely；Detected using same method, it is found that whether remaining weir has the feature of underground water, so as to show CWE04,
Whether CWE07, CWE08 infiltration include underground water in source；
(3) global analysis：
According to the statistics to whole sequence, the average value of radon contents in weir, storehouse well water average value, about upper storage reservoir storage are obtained
Surface water radon contents average value at water and gentle slope；
From radon contents comparison, determine whether storehouse water is the main next of seepage from powerhouse；
In addition, having carried out coherent detection to the Hydrogen-oxygen Isotope in water sample, testing result is analyzed：
(1) weir, around four kinds of dam seepage flow hole, surface water, storehouse well water water sample δ18O~δ D component relationship drops with global atmosphere
The local meteoric water line correlation of waterline and Northeast Area of China is not notable, then shows as slope and intercept is widely different；Four kinds
δ in water sample18O~δ D composition has differences, and slope, the relative difference of intercept are more obvious, has distinction；
(3) such as δ in the well water of storehouse18O~δ D compositions change greatly, and isotopics scatterplot distribution is maximum, represents in the well water of storehouse
δ18There are the maximum of points and minimum point of all water body isotopics scatterplots in the scatterplot of O~δ D compositions；
(4) δ of weir and storehouse water18O~δ D compositions have good similitude, are embodied in the isotope of weir water body
Composition is located approximately on the isotopics line of storehouse water, same in the composition of isotope and weir water body in storehouse well water (underground water)
Position element composition relative different is larger, and it is larger to show as the slope relative different of both isotopics lines, illustrates that underground power house oozes
Leak mostlys come from storehouse water.
4. according to claim 1 survey Pumped Storage Plant Underground Powerhouse infiltration source method based on isotope tracer technique,
It is characterized in that：On the source of underground power house percolating water, mainly by weir, around dam seepage flow, storehouse well water (underground water)
Detected with radon isotope content in (surface water) water sample is put in storage out at (surface water) and gentle slope, at the same it is subsidiary to water sample
Temperature, Hydrogen-oxygen Isotope and chlorion, sulfate ion and nitrate ion concentration are detected；Radon isotope is containing measurement
Determine result to show, surface and ground water radon isotope content difference is very big within 2014, weir radon contents and earth's surface water content
Close, storehouse water is the main source of seepage from powerhouse；Unilaterally from radon isotope content synthesis measuring interpretation of result, it is believed that factory building oozes
Storehouse water occupies larger proportion in the source of leak, and the alimentation of underground water can not be ignored；
Whether chlorion, sulfate ion and nitrate ion concentration measurement result analysis percolating water within the period in the first half of the year are basic
It is upper to come from storehouse water, whether find Characteristics of Groundwater in remaining weir；Hydrogen-oxygen Isotope testing result shows, weir and storehouse
δ in water water sample18Whether O~δ D are formed has good similitude, the composition of isotope and amount water in storehouse well water (underground water)
Whether isotopics relative different is larger in sluice body, explanatorily to descend whether seepage from powerhouse water mostlys come from storehouse water.
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