CN210322463U - Karst underground river water sample sampling device - Google Patents
Karst underground river water sample sampling device Download PDFInfo
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- CN210322463U CN210322463U CN201921145143.6U CN201921145143U CN210322463U CN 210322463 U CN210322463 U CN 210322463U CN 201921145143 U CN201921145143 U CN 201921145143U CN 210322463 U CN210322463 U CN 210322463U
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Abstract
The utility model discloses a karst underground river water sample sampling device. The sampling device comprises a water storage device and a support rod, wherein the water storage device comprises a water inlet bin and a water storage bin which are arranged up and down and are mutually communicated, the water inlet bin is provided with a water inlet, an adjustable water inlet baffle and a protective net are arranged on the water inlet bin, a longitudinal slot is respectively arranged at the position, close to two vertical edges of the water inlet, on the inner wall of the water inlet bin, and the adjustable water inlet baffle is inserted into the two longitudinal slots; a protective cover is arranged at the top of the water inlet bin; the water storage bin is provided with a water outlet, and a fixed sleeve is arranged on the outer peripheral wall of the water storage bin; the support rod comprises linking pole and pole head, is provided with more than one through-hole that runs through linking pole horizontal width on linking the pole, realizes the relative fixation of bracing piece and water receiver through the screw thread pair when the bracing piece inserts the fixed sleeve on the water receiver periphery wall. The device is with low costs, has multiple functions such as portable, current-limiting, depthkeeping, multiple measurement.
Description
Technical Field
The utility model relates to a collection system of water sample, concretely relates to karst underground river water sample sampling device.
Background
The water sample collection is to continuously or intermittently sample water bodies such as drill holes, civil wells, springs, underground rivers, surface rivers and the like by specific instruments, equipment and methods. At present, a fixed-depth and real-time sampling device and a sampling method exist for water sample collection of water point types such as drilling, civil wells and the like, and a multidirectional and mixed sampling technology is expanded for surface water sample collection except the fixed-depth and real-time sampling device and the method. The existing sampling device and method meet the requirements of sample collection of drilling holes, civil wells and other relatively static water bodies to a certain extent, and also meet the requirements of sample collection of flowing water bodies such as springs, underground rivers, surface rivers and the like. However, for the karst underground river water, the existing sampling device cannot well control the inlet flow speed, the flow and the sampling depth of the sampling device according to actual needs.
In addition, when researching the migration and transformation rules of water chemistry indexes of flowing water bodies such as springs, underground rivers and the like, sample collection needs to be provided with a proper sampling device, and the runoff time of water body particles from upstream to downstream is often required to be acquired. At present, aiming at a plurality of water spot outcrops with upstream and downstream relations along a karst underground river, water sample collection is mainly performed by random sampling, namely, water sample collection is performed on the water spot outcrops (an underground river inlet, a skylight, a puddle, a vertical shaft and the like) along the underground river through specific sampling equipment, and the runoff time of underground water from upstream to downstream is not accurately considered. This limits to some extent the quantitative investigation of the migration and transformation processes of solutes or contaminants in underground river channels. In order to quantitatively calculate the attenuation characteristic of the water chemistry index in the underground river pipeline and research the purification capacity of the underground river to the pollution index, it is necessary to develop a reasonable and effective underground river water sample collection method.
The existing field sampling device designed aiming at flowing water bodies such as springs, underground rivers and the like has higher manufacturing cost, does not consider the water body mobility and the convenience of the sampling device, and is not suitable for popularization and promotion; meanwhile, groundwater runoff time is not considered in the sampling process. Therefore, it is necessary to develop a sampling device which has the advantages of low cost, portability, limited flow, fixed depth, multiple measurement and the like and a sampling method which fully considers the groundwater runoff time.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to have not enough among the prior art, provide one kind with low costs, and have portable, current-limiting, depthkeeping, multiple measurement and other multiple functions's karst underground river water sample sampling device.
The utility model provides a karst underground river water sample sampling device, including water receiver and bracing piece, wherein:
the water storage device comprises a water inlet bin and a water storage bin which are arranged up and down and are mutually communicated, the water inlet bin is provided with a water inlet into which water flow enters, the water inlet is provided with an adjustable water inlet baffle plate for controlling whether the water flow can enter the water inlet bin and a protective net for intercepting large-particle-size suspended matters or floating matters in the water flow, the positions, close to two vertical edges of the water inlet, on the inner wall of the water inlet bin are respectively provided with a longitudinal slot, and the adjustable water inlet baffle plate is inserted into the two longitudinal slots; a protective cover is arranged at the top of the water inlet bin; the water storage bin is provided with a water outlet for discharging collected water samples, and a fixed sleeve for inserting or taking out the support rod is arranged on the outer peripheral wall of the water storage bin;
the supporting rod consists of a connecting rod and a rod head, more than one through hole penetrating through the transverse width of the connecting rod is formed in the connecting rod, and when the supporting rod is inserted into the fixing sleeve on the outer peripheral wall of the water receiver, the supporting rod and the water receiver are fixed relatively through the thread pair.
In order to further clarify the sampling flow rate, it is preferable to provide a scale on the adjustable water inlet baffle.
In order to further improve the relative fixing effect between the support bar and the water reservoir, it is preferable that the number of the fixing sleeves is 2 or more and they are symmetrically distributed on the outer peripheral wall of the water reservoir with reference to the longitudinal center line of the water reservoir. When the number of the fixed sleeves is an even number more than 4, the longitudinal center lines of the fixed sleeves distributed on the same side are overlapped with each other, and the fixed sleeves on the same side are preferably uniformly distributed on the peripheral walls of the water inlet bin and the water storage bin.
Among the sampling device, the pole that links up and the pole head adopt swing joint or fixed connection, preferably adopt threaded connection. In practical application during the adoption device, insert the fixed sleeve on the water receiver periphery wall and realize the relatively fixed back of bracing piece and water receiver through the screw thread pair when the bracing piece, need insert the bracing piece underground river bottom (usually in the deposit of underground river) in order to realize that sampling device can be fixed in underground river. In order to enable the support rod to be inserted into the bottom of the underground river better, the bottom of the club head is preferably tapered. On the other hand, in order to prevent the sampling device from shaking or even being washed away due to the water flow, it is preferable to insert another support rod into the fixing sleeve on the other side of the water reservoir to enhance the fixing effect. When the practical application, sampling device adopts the water inlet to place towards the incoming water direction.
Among the sampling device, adopt the through-hole of different positions on the pole that links up to be fixed with the fixed muffjoint on the water receiver periphery wall, can realize the regulation of different sampling depth.
Adopt among the device, be provided with on the outlet and can control whether the reservoir normal water appearance can follow this outlet exhaust end cap or valve.
In order to further clarify the water storage amount in the water storage compartment, it is preferable to provide a scale on the water storage compartment.
Sampling device can design into required shape as required, preferably designs into the cylinder shape.
Among the sampling device, the material of each spare part can be selected according to the actual need such as the sampling condition of being convenient for observe, and is specific, and storehouse, water storage storehouse, fixed sleeve, outlet, adjustable baffle, the preferred organic glass preparation that adopts of vertical slot of intaking, and parts such as protective cover, protection network, bracing piece then adopt metal material (like iron etc.) preparation.
The method for collecting the water sample of the karst underground river by adopting the device comprises the following steps:
1) determining a tracer putting point, a receiving point and a tracer putting type:
after selecting a to-be-sampled underground river, determining a tracer feeding point and a tracer receiving point (namely the tracer feeding point and the tracer receiving point are sampling points) according to the hydrogeological conditions and the sampling purpose of the underground river; then determining the tracer feeding type by combining the social environment conditions along the underground river;
2) calculating the tracer adding amount:
2.1) measuring the flow velocity V of the trace receiving point farthest from the throwing pointfAnd flow rate qfEstimating the predicted time of arrival T of the longest trace segment tracerfCalculating the total amount of groundwater Q according to the following formula (1)f；
2.2) measuring the background value C of the tracer at the receiving pointf book；
2.3) determining the karst rate coefficient K reflecting the characteristics of karst development, porosity and the like by analyzing the karst hydrogeological conditions, and then calculating the tracer input amount W according to the following formula (2)f；
Qf＝qf×Tf(1)；
Wf＝Qf×K×10Cf book(2)；
In the above formulas (1) and (2), qfMeasuring the flow rate L/d (i.e. liter/day, the same below) for the trace receiving point farthest from the trace throwing point; t isfThe expected arrival time, d (i.e. days, same below), for the tracer to arrive from the point of delivery to the farthest tracer reception point; qfTracing the total amount of groundwater in the section from the throwing point to the farthest tracing receiving point, L; k is a karst rate coefficient and has a value range of 1.5-2.5; cf book(iv) a tracer background value, ppb, for groundwater in the tracer zone; wfThe dosage of the tracer is kg;
3) determining the time interval T from dosing to peak of traceri：
3.1) following the proposed tracer test protocol at each tracer receiver point JiArranging a tracing receiving instrument from near to far from a throwing point, and arranging a receiving point JiSerial number is J in sequence1，J2，J3，……，JiWherein i is a positive integer and i is greater than or equal to 1;
3.2) at the tracer release point J0Putting the tracer agent, and recording the initial time point t of putting the tracer agentt1Time point t of end of deliveryt2Calculating the average tracer adding time point t according to the following formula (3)tCalculating the tracer feeding time interval T according to the following formula (4)t；
3.3) observing the tracer receiving points J in sequence after the tracing is finishediDetermining a receiving point JiAt the time point t of the peak value of the tracing curvei；
3.4) determining the time interval T from the release to the tracing peak value of each receiving point according to the formula (5)i；
tt＝(tt1+tt2)/2 (3)；
Tt＝(tt2-tt1) (4)；
Ti＝ti-tt(5)；
In formulae (3) to (5), ttFor average administration of tracerAt the time point, y/m/d-h is min: s (i.e. a certain year/a certain month/a certain day-a certain minute: a certain second, the same applies below); t is tt1Feeding the tracer agent at an initial time point, wherein the y/m/d-h is min: s; t is tt2Min is s for the time point when the tracer agent is put into the container, and y/m/d-h is the time point when the tracer agent is put into the container; t istThe time interval of tracer agent feeding is h: min: s (namely, a certain minute: a certain second, the same applies below); t isiTracer from administration to JiReceiving a peak time interval of points, h is min: s, wherein i is a positive integer and i is more than or equal to 1; t is tiTo correspond to JiThe tracing receiving point traces the curve peak time point, y/m/d-h is min: s, wherein i is a positive integer and is more than or equal to 1;
4) making a sampling plan:
tracing peak time interval T by using each receiving point obtained in step 3)iSetting from the throwing point to the tracing receiving point JiThe sampling plan of (2); particularly, from a release point, the sampling time interval is 0 and T in sequence1，T2，T3，……，Ti；
5) Sampling by using the sampling device of claim 1 according to the sampling time point determined in step 4), and placing the water inlet of the sampling device towards the incoming water direction when the sampling device is placed.
In step 2.1) of the sampling method, the conventional instrument is used to measure the flow velocity and flow rate of the trace receiving point farthest from the launching point, specifically, the conventional instrument may be used to measure the flow velocity by using a flow velocity meter.
In step 2.2) of the above sampling method, the background value of the receiving point tracer is measured using existing conventional equipment, preferably using a tracer receiver to measure reception. The tracing receiver can be a high-sensitivity fluorescence photometer, a polarograph or a multi-parameter water quality automatic recorder (containing a conductivity probe).
In step 5) of the sampling method, in order to make the collected water sample more representative, the water sample is preferably collected by adopting a continuous water inflow collection mixed sample mode, and at this time, the water inflow time is preferably controlled to 1/4TtTo 1/2TtT istThe tracer dosing time interval. When there are a plurality of sampling points, it is preferable to collect a proportion of parallel samplesControlling the quality; specifically, the parallel sample collection is determined according to actual conditions, 1 group of parallel samples are set according to every 5 sampling points under normal conditions, and less than 5 sampling points are calculated according to 5 sampling points.
Compared with the prior art, the utility model is characterized in that:
1. in general, the utility model consists of a water storage device and a support rod, and has simple structure and low cost; small volume, easy assembly and disassembly and convenient carrying.
2. Structurally, the protective cover is additionally arranged, so that the collected sample is not influenced by rain or cave water dripping; the sampling flow is controlled by adjusting the height of the water inlet baffle plate, so that the purpose of flow limitation is achieved; the purpose of sampling at fixed depth is achieved by adjusting the position of the water storage device on the supporting rod; the arrangement of the scale on the water storage bin realizes the measurement of the water storage capacity. Therefore, the device can measure inflow, water storage capacity and sampling depth respectively.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the karst underground river water sampling device according to the present invention;
FIG. 2 is an exploded view of the water reservoir of the embodiment of FIG. 1;
FIG. 3 is an exploded view of the support pole of the embodiment shown in FIG. 1;
FIG. 4 is a sectional view taken along line A-A of FIG. 1;
FIG. 5 is a left side view of FIG. 1;
FIG. 6 is a schematic view of the karst groundwater sampling device of the embodiment shown in FIG. 1 in practical use;
fig. 7 is a test result of putting tracer in water sample of Changle underground river in Guanling county of Guizhou province by adopting the device and the method of the utility model, wherein the abscissa is time, and the ordinate is concentration value of underground water tracer at tracer receiving point, unit ppb;
FIG. 8 is a result of the measurement of Al content in the water sample of a Changle underground river in Guanling county, Guizhou province, acquired by the device and method of the present invention, wherein
Represents the Al content in the water sample collected at the sampling point with the field number DY01,
and represents the Al content in the water sample collected at the sampling point with the field number DY 02.
The reference numbers in the figures are:
1. a protective cover; 2. a water inlet bin; 3. fixing the sleeve; 4. a screw; 5. a nut; 6. a water storage bin; 7. a valve; 8. a water outlet; 9. a scale; 10. the water inlet baffle can be adjusted; 11. a longitudinal slot; 12. a protective net; 13. a connecting rod; 14. a through hole; 15. a club head; 16. a water reservoir; 17. a support bar; 18. (ii) a deposit; 19. a bedrock.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments for better understanding of the present invention, but the present invention is not limited to the following embodiments.
Example 1: karst underground river water sample sampling device
As shown in fig. 1, the karst groundwater sample sampling device of the present invention comprises a water storage device 16 and a support rod 17, wherein:
the water storage device 16 is integrally in a cylinder shape and comprises a water inlet bin 2 and a water storage bin 6 which are arranged up and down and are communicated with each other, the water inlet bin 2 is provided with a water inlet through which water flow enters, the water inlet is provided with two vertical edges, a longitudinal slot 11 is respectively arranged at the position, close to the two vertical edges of the water inlet, on the inner wall of the water inlet bin 2, an adjustable water inlet baffle 10 for controlling whether the water flow can enter the water inlet bin 2 is arranged in the two longitudinal slots 11, a scale 9 is arranged on the adjustable water inlet baffle 10, and a protective net 12 for intercepting large-particle-size suspended matters or floating matters in the water flow is further arranged on the; a protective cover 1 is arranged at the top of the water inlet bin 2; the water storage bin 6 is provided with a water outlet 8 for discharging the collected water sample, and a valve 7 is arranged on the water outlet; a scale 9 is arranged on the water storage bin 6; the outer peripheral wall of the water receiver 16 is provided with a fixed sleeve 3 for inserting or taking out a support rod 17;
the supporting rod 17 consists of a connecting rod 13 and a rod head 15 which are connected by threads, wherein the connecting rod 13 is in a hollow design, and the bottom of the rod head 15 is in a conical shape; the connecting rod 13 is provided with 4 through holes 14 which penetrate through the transverse width of the connecting rod 13, the through holes are symmetrically distributed on the peripheral wall of the water storage device 16 by taking the longitudinal central line of the water storage device 16 as a reference, the longitudinal central lines of the 2 fixed sleeves 3 which are distributed on the same side are mutually superposed, one of the through holes is positioned on the peripheral wall of the water inlet bin 2, and the other through hole is positioned on the peripheral wall of the water storage bin 6; after the support bar 17 is inserted into the fixing sleeve 3 on the outer peripheral wall of the water receiver 16, the support bar 17 and the water receiver 16 are fixed relatively by the screw 4 and the screw cap 5.
Sampling device when practical application adopts the bracing piece 17 to measure the depth of water of underground river earlier, is fixed in the suitable position of bracing piece 17 with water receiver 16 according to the depth of water condition (accomplish bracing piece 17 and water receiver 16's relatively fixed promptly), inserts bracing piece 17 underground river bottom (be underground river's deposit 18 and bedrock 19's juncture usually) in order to realize that sampling device can be fixed in underground river. In order to prevent the sampling device from being shaken or even washed away by the water flow, it is preferable to use another support rod 17 inserted into the fixing sleeve 3 on the other side of the water reservoir 16 to enhance the fixing effect. Sampling device adopts the water inlet to place towards the incoming water direction when placing.
Example 2: method for collecting karst underground river water sample by adopting karst underground river water sample sampling device
The method for collecting the water sample of the karst underground river by adopting the device in the figure 1 comprises the following steps:
1) determining a tracer putting point, a receiving point and a tracer putting type:
after selecting an underground river to be sampled, determining a tracer feeding point and a tracer receiving point according to the hydrogeological conditions and the sampling purpose of the underground river; then determining the tracer feeding type by combining the social environment conditions along the underground river;
2) calculating the tracer adding amount:
2.1) measuring the trace receiver farthest from the drop point by using a current meterClosing point flow velocity VfAnd flow rate qfEstimating the predicted time of arrival T of the longest trace segment tracerfCalculating the total amount of groundwater Q according to the following formula (1)f；
2.2) measuring the background value C of the tracer at the receiving point by adopting a tracerf book；
2.3) determining the karst rate coefficient K reflecting the characteristics of karst development, porosity and the like by analyzing the karst hydrogeological conditions, and then calculating the tracer input amount W according to the following formula (2)f；
Qf＝qf×Tf(1)；
Wf＝Qf×K×10Cf book(2)；
In the above formulas (1) and (2), qfActually measuring the flow, L/d, of a tracing receiving point farthest from a tracing releasing point; t isfPredicting the arrival time of the tracer from the release point to the farthest tracer receiving point, d; qfTracing the total amount of groundwater in the section from the throwing point to the farthest tracing receiving point, L; k is a karst rate coefficient and has a value range of 1.5-2.5; cf book(iv) a tracer background value, ppb, for groundwater in the tracer zone; wfThe dosage of the tracer is kg;
3) determining the time interval T from dosing to peak of traceri：
3.1) following the proposed tracer test protocol at each tracer receiver point JiArranging a tracing receiving instrument from near to far from a throwing point, and arranging a receiving point JiSerial number is J in sequence1，J2，J3，……，JiWherein i is a positive integer and i is greater than or equal to 1;
3.2) at the tracer release point J0Putting the tracer agent, and recording the initial time point t of putting the tracer agentt1Time point t of end of deliveryt2Calculating the average tracer adding time point t according to the following formula (3)tCalculating the tracer feeding time interval T according to the following formula (4)t；
3.3) observing the tracer receiving points J in sequence after the tracing is finishediDetermining a receiving point JiTrace curve peak ofValue time ti；
3.4) determining the time interval T from the release to the tracing peak value of each receiving point according to the formula (5)i；
tt＝(tt1+tt2)/2 (3)；
Tt＝(tt2-tt1) (4)；
Ti＝ti-tt(5)；
In formulae (3) to (5), ttThe average adding time point of the tracer agent is y/m/d-h, min: s; t is tt1Feeding the tracer agent at an initial time point, wherein the y/m/d-h is min: s; t is tt2Min is s for the time point when the tracer agent is put into the container, and y/m/d-h is the time point when the tracer agent is put into the container; t istThe time interval for putting the tracer agent is h, min and s; t isiTracer from administration to JiReceiving a peak time interval of points, h is min: s, wherein i is a positive integer and i is more than or equal to 1; t is tiTo correspond to JiThe tracing receiving point traces the curve peak time point, y/m/d-h is min: s, wherein i is a positive integer and is more than or equal to 1;
4) making a sampling plan:
tracing peak time interval T by using each receiving point obtained in step 3)iSetting from the throwing point to the tracing receiving point JiThe sampling plan of (2); particularly, from a release point, the sampling time interval is 0 and T in sequence1，T2，T3，……，Ti；
5) Sampling by using the sampling device of claim 1 according to the sampling time point determined in step 4), and placing the water inlet of the sampling device towards the incoming water direction when the sampling device is placed.
In step 2.1) of the sampling method, the conventional instrument is used to measure the flow velocity and flow rate of the trace receiving point farthest from the launching point, specifically, the conventional instrument may be used to measure the flow velocity by using a flow velocity meter.
In step 2.2) of the above sampling method, the background value of the receiving point tracer is measured using existing conventional equipment, preferably using a tracer receiver to measure reception. The tracing receiver can be a high-sensitivity fluorescence photometer, a polarograph or a multi-parameter water quality automatic recorder (containing a conductivity probe).
In step 5) of the sampling method, in order to make the collected water sample more representative, the water sample is preferably collected by adopting a continuous water inflow collection mixed sample mode, and at this time, the water inflow time is preferably controlled to 1/4TtTo 1/2TtT istThe tracer dosing time interval. When a plurality of sampling points are provided, preferably, a certain proportion of parallel samples are collected for quality control; specifically, the parallel sample collection is determined according to actual conditions, 1 group of parallel samples are set according to every 5 sampling points under normal conditions, and less than 5 sampling points are calculated according to 5 sampling points.
The following is a more detailed description of the present invention, which is made by using the device (fig. 1) and the method of the present invention to collect the water sample of the chang le underground river in the guan Ling county of Guizhou province.
The method specifically comprises the following steps:
1) determining a tracer putting point, a receiving point and a tracer putting type:
the Shanghainese underground river is located in Shanghainese village at the top of cloud county of Guanling county of Guizhou province, the Shanghainese underground river is spread in the south and north directions, and the length of the pipeline is 508 m; the surface river water is supplied to the underground river through a DY01 water-consuming cave, and the underground water flows from north to south and flows out of a DY02 karst cave. In the dry season in 12 months in 2018, the inlet and outlet flows are relatively stable. Respectively selecting DY01 and DY02 as tracer release points and tracer receiving points; considering that the underground river has short pipeline and the underground river water is only used as a domestic non-drinking water source of a downstream village, the sodium fluorescein with small dosage and high sensitivity is selected as the tracer.
2) Calculating the tracer adding amount:
2.1) measuring the flow q of a tracing receiving point DY02 farthest from a throwing point DY01 by using a mining intrinsic safety type flow velocity measuring instrument YSD5 in 2018, 12 months and 16 daysf，qfIs 243.1L/s (i.e. 2.1X 10)7L/d), estimating the groundwater flow velocity V of the tracing sectionf0.023m/s, the expected arrival time T of the tracer from the putting point to the receiving pointfAt 6h (i.e., 0.167d), T was calculated according to the following formula (1)fUnderground river outlet DY within time02 Total Water yield QfThe result was 5.25X 106L；
2.2) measuring the background value C of the sodium fluorescein tracer at the receiving point by using a high-sensitivity fluorescence photometer (FL30-698 type)f bookThe result shows C at DY02f bookThe value is 0.0002mg/L lower than the detection limit of the instrument, and in order to make the tracer test curve obvious, C is added when calculating the adding amount of the tracerf bookSet at 0.2 ppb;
2.3) determining the karst-hydrogeological condition that the karst-hydrogeological condition coefficient K of the Shanghainese underground river is 2, and then calculating the input quantity W of the tracer agent according to the following formula (2)f0.021 kg;
Qf＝qf×Tf(1)；
Wf＝Qf×K×10Cf book(2)；
In the above formulas (1) and (2), qfMeasuring the flow rate for the trace receiving point farthest from the trace throwing point by L/d (L represents liter, d represents day, the same below); t isfPredicting the arrival time of the tracer from the release point to the farthest tracer receiving point, d; qfTracing the total amount of groundwater in the section from the throwing point to the farthest tracing receiving point, L; k is a karst rate coefficient and has a value range of 1.5-2.5; cf book(iv) a tracer background value, ppb, for groundwater in the tracer zone; wfThe amount of tracer added is kg.
3) Determining the time interval T from dosing to peak of traceri：
3.1) following the proposed tracer test protocol at each tracer receiver point JiArranging a tracing receiving instrument from near to far from a throwing point, and arranging a receiving point JiSerial number is J in sequence1，J2，J3，……，JiWherein i is a positive integer and i is greater than or equal to 1; only 1 receiving point (DY02) is set for this tracing, so the number of the tracing receiving point is J1。
3.2) at the tracer release point J0(corresponding to a field number DY01) putting a fluorescein sodium tracer, and recording the initial time point t of putting the tracert1(recorded value: 2018/12/16-12:34:00), end of delivery time point tt2(recorded value is: 2018/12/16-12:36:00), calculating the average adding time point t of the tracer agent according to the following formula (3)t(recorded value: 2018/12/16-12:35:00), calculating the tracer-application time interval T according to the following formula (4)t(calculated: 00:02:00), the specific tracer assay results are shown in FIG. 7;
3.3) observing the tracer receiving point J after the tracing is finished1Determining a receiving point J1At the time point t of the peak value of the tracing curve1(observed values: 2018/12/16-18:20: 00);
3.4) determining the receiving point J according to the formula (5)1Time interval T from putting to tracing peak1(0-5-45)；
tt＝(tt1+tt2)/2 (3)；
Tt＝(tt2-tt1) (4)；
Ti＝ti-tt(5)；
In formulae (3) to (5), ttThe average adding time point of the tracer agent is y/m/d-h, min: s; t is tt1Feeding the tracer agent at an initial time point, wherein the y/m/d-h is min: s; t is tt2Min is s for the time point when the tracer agent is put into the container, and y/m/d-h is the time point when the tracer agent is put into the container; t istThe time interval for putting the tracer agent is h, min and s; t isiTracer from administration to JiReceiving a peak time interval of points, h is min: s, wherein i is a positive integer and i is more than or equal to 1; t is tiTo correspond to JiTracing the peak time point of the tracing curve at the tracing receiving point, wherein y/m/d-h is min: s, i is a positive integer and is more than or equal to 1.
4) Making a sampling plan:
using the reception point J obtained in step 3)1Spike peak time interval T1Making a slave drop point J0To the tracing receiving point J1The sampling plan of (2); particularly, from a release point, the sampling time interval is 0 and T in sequence1；
5) And (3) collecting samples of the Shanghai underground river by adopting the sampling device according to claim 1 according to the determined sampling time point in the step 4), wherein 6 combined samples are collected according to the sampling time node, and the specific details are shown in the following table 1.
TABLE 1 sampling conditions of Shanghai Gangle underground rivers DY01 and DY02
The sampling device is placed as shown in fig. 6 to start sampling. When the sampling device is used, the support rod 17 is firstly adopted to measure the sampling point J0(corresponding to field numbers DY01) and J1(corresponding to field number DY02), fixing the water storage device 16 at the appropriate position of the support rod 17 according to the water depth (namely completing the relative fixing of the support rod 17 and the water storage device 16), and inserting the support rod 17 into the J0、J1The bottom (typically in the sediment 18 of the underground river) to enable the sampling device to be secured in the underground river. In order to prevent the sampling device from shaking or even being washed away due to the water flow, another support rod 17 is inserted into the fixing sleeve 3 on the other side of the water storage device 16 to enhance the fixing effect, and the water inlet of the sampling device is arranged towards the water direction. The sampling flow rate is controlled by adjusting the height of the water inlet baffle plate 10, so that the time interval T of putting the tracer agent is ensuredtThe water storage 6 is filled within 1/4-1/2 (0.5-1 min here). After the sampling device collects the water sample, the water sample is lifted to the bank side, the valve 7 on the water discharging port 8 on the water storage bin 6 is opened, the water sample in the water storage bin 6 is bottled, and the sampling work is finished. FIG. 8 shows the Al index test result of the sample collected this time, and as can be seen from FIG. 8, the Al in the underground river from DY01 to DY02 is obviously attenuated, the attenuation rate is 5.22-40%, and the underground river pipeline has obvious purification capacity for the Al index, which indicates that the sampling method has an obvious effect on the chemical research of the karst underground river.
Claims (5)
1. The utility model provides a karst underground river water sample sampling device, includes water receiver (16) and bracing piece (17), its characterized in that:
the water storage device (16) comprises a water inlet bin (2) and a water storage bin (6) which are arranged up and down and are communicated with each other, the water inlet bin (2) is provided with a water inlet into which water flow enters, the water inlet is provided with an adjustable water inlet baffle (10) for controlling whether the water flow can enter the water inlet bin (2) or not and a protective net (12) for intercepting suspended matters or floating matters with large particle diameters in the water flow, the positions, close to two vertical edges of the water inlet, on the inner wall of the water inlet bin (2) are respectively provided with a longitudinal slot (11), and the adjustable water inlet baffle (10) is inserted into the two longitudinal slots (11); a protective cover (1) is arranged at the top of the water inlet bin (2); the water storage bin (6) is provided with a water outlet (8) for discharging collected water samples, and a fixed sleeve (3) for inserting or taking out a support rod (17) is arranged on the outer peripheral wall of the water storage bin (16);
the supporting rod (17) consists of a connecting rod (13) and a rod head (15), more than one through hole (14) which penetrates through the transverse width of the connecting rod (13) is formed in the connecting rod (13), and when the supporting rod (17) is inserted into the fixing sleeve (3) on the outer peripheral wall of the water storage device (16), the supporting rod (17) and the water storage device (16) are fixed relatively through a thread pair.
2. The karst underground river water sampling device of claim 1, characterized in that: and a scale (9) is arranged on the adjustable water inlet baffle (10).
3. The karst underground river water sampling device of claim 1, characterized in that: the number of the fixed sleeves (3) is more than 2, and the fixed sleeves are symmetrically distributed on the peripheral wall of the water receiver (16) by taking the longitudinal center line of the water receiver (16) as a reference.
4. The karst underground river water sampling device of claim 1, characterized in that: the bottom of the club head (15) is conical.
5. The karst underground river water sampling device of claim 1, characterized in that: and a scale (9) is arranged on the water storage bin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145143.6U CN210322463U (en) | 2019-07-19 | 2019-07-19 | Karst underground river water sample sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145143.6U CN210322463U (en) | 2019-07-19 | 2019-07-19 | Karst underground river water sample sampling device |
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| CN210322463U true CN210322463U (en) | 2020-04-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261186A (en) * | 2019-07-19 | 2019-09-20 | 中国地质科学院岩溶地质研究所 | A kind of karst subterranean stream water sample sampling device and the method for sampling |
| CN113341479A (en) * | 2021-05-24 | 2021-09-03 | 国电建投内蒙古能源有限公司 | Tracing test method for determining hydraulic connectivity of mining area |
-
2019
- 2019-07-19 CN CN201921145143.6U patent/CN210322463U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261186A (en) * | 2019-07-19 | 2019-09-20 | 中国地质科学院岩溶地质研究所 | A kind of karst subterranean stream water sample sampling device and the method for sampling |
| CN113341479A (en) * | 2021-05-24 | 2021-09-03 | 国电建投内蒙古能源有限公司 | Tracing test method for determining hydraulic connectivity of mining area |
| CN113341479B (en) * | 2021-05-24 | 2024-05-07 | 国电建投内蒙古能源有限公司 | Trace test method for determining hydraulic connectivity of goaf |
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