CN116222692A - Control system and method for multilayer groundwater level measurement and water sample collection - Google Patents
Control system and method for multilayer groundwater level measurement and water sample collection Download PDFInfo
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- CN116222692A CN116222692A CN202310520618.XA CN202310520618A CN116222692A CN 116222692 A CN116222692 A CN 116222692A CN 202310520618 A CN202310520618 A CN 202310520618A CN 116222692 A CN116222692 A CN 116222692A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 239000003673 groundwater Substances 0.000 title claims abstract description 48
- 238000005259 measurement Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000008239 natural water Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 240000009087 Crescentia cujete Species 0.000 description 2
- 235000005983 Crescentia cujete Nutrition 0.000 description 2
- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention relates to the technical field of underground water level measurement equipment, in particular to a control system and a control method for multilayer underground water level measurement and water sample collection, wherein the control system comprises a measurement pipeline used for extending into a borehole, two ends of the measurement pipeline are communicated, an annular air bag is sleeved on the outer side wall of the measurement pipeline and is arranged on a water-resisting layer, and the annular air bag can be inflated. By adopting the control system for measuring the water level of the multilayer groundwater and taking the water sample and the operation method thereof, the water level measurement and the sampling can be directly carried out through the measurement pipeline during the measurement, the water level and the water quality information of the aquifer to be measured can be obtained, the detection is accurate, reliable and quick, the structure is simple, and the operation is easy.
Description
Technical Field
The invention relates to the technical field of groundwater level measurement equipment, in particular to a control system and a control method for multilayer groundwater level measurement and water sample collection.
Background
The region of China is wide, the stratum condition is complex, and multiple layers of underground water are often distributed in different places. The influence of groundwater on mankind and engineering has aspects such as utilization of groundwater, precipitation, anti-floating of groundwater engineering, ground source heat pump, etc., and the water level burial depth condition of different types of groundwater in different aquifers, and the quality and corrosiveness of groundwater need to be accurately ascertained. In the actual investigation process, the water levels measured by technicians are often mixed water levels, and no effective method is found for accurately measuring the water levels of different aquifers and sampling the water quality of underground water.
Disclosure of Invention
The invention aims at: aiming at the problem of inaccurate measurement of the water level of the multi-layer underground water in the prior art, the control system and the control method for measuring the water level of the multi-layer underground water and taking the water sample are provided.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a control system for multilayer groundwater water level measurement and water sample are taken, is including being used for stretching into the measuring tube who drills, and measuring tube both ends switch on, have cup jointed annular gasbag on measuring tube's the lateral wall, and annular gasbag is used for setting up in the water barrier, and annular gasbag can aerify.
According to the control system for measuring the water level of the multilayer groundwater and taking the water sample, provided by the invention, the water seepage channels of the upper and lower aquifers can be isolated at the water-resisting layer through the annular air bags, so that the groundwater in the upper aquifer is prevented from influencing the measurement of the groundwater level in the lower aquifer; under the atmospheric pressure effect, the groundwater of the water-bearing layer to be measured can enter the measuring pipeline through the conducting port at the bottom end of the measuring pipeline until the groundwater is flush with the natural water level of the water-bearing layer to be measured, the process is not influenced by the water pressure of the water-bearing layer at the upper layer, water level measurement and sampling can be directly carried out from the conducting port at the top end of the measuring pipeline during measurement, and water level and water quality information of the water-bearing layer to be measured can be obtained. The conducting ports at two ends of the measuring pipeline can be positioned at the tail ends of the pipeline or side wall openings at two ends of the pipeline.
Preferably, the side wall of at least one end of the measuring pipeline is provided with a water passing hole, and one end of the measuring pipeline provided with the water passing hole is used for extending into the drilling hole. The arrangement of the water passing holes can enable the underground water in the lower water-bearing layer to effectively infiltrate into the measuring pipeline, so that the problem that the underground water in the lower water-bearing layer cannot enter the measuring pipeline due to the fact that the pipe orifice at the bottom end of the measuring pipeline is inserted into the soil layer is prevented, and the underground water level in the lower water-bearing layer cannot be measured is avoided.
Preferably, the water passing holes are arranged in a plurality, and the water passing holes are circumferentially arranged along the measuring pipeline and are arranged at intervals along the length direction of the measuring pipeline, so that the underground water permeation rate can be accelerated.
Preferably, the water holes are provided with filter screens for filtering out gravel with large particle size, so as to avoid pipeline blockage.
Preferably, the control system further comprises a water level measuring device for measuring the water level in the measuring pipe.
Preferably, the water level measuring device comprises an underground water level electronic measuring instrument, a cable measuring rope and a sensor, wherein the underground water level electronic measuring instrument is connected with the sensor through the cable measuring rope, and the sensor is used for extending into a measuring pipeline to measure the water level.
Preferably, the bottom of the sensor is provided with a water taking device, and the water quality sampling of the aquifer to be measured is realized while the water level is measured.
Preferably, the annular air bag is connected to the air supply device through an air charging pipe, and a control valve is arranged on the air charging pipe and used for preventing air leakage.
Preferably, the outer contour of the annular air bag is in a calabash shape, so that the contact area is large, the sealing is facilitated, and the sealing performance is good.
Preferably, the air supply device is an inflator, and also can be an air pump, an air gun and the like.
The operation method for measuring the water level of the multilayer groundwater and taking the water sample adopts the control system for measuring the water level of the multilayer groundwater and taking the water sample, and comprises the following steps:
after drilling to the (n+1) layer aquifer, lowering the measuring pipeline until the annular air bag on the measuring pipeline is positioned in the water-resisting layer at the upper part of the (n+1) layer aquifer, wherein n is a positive integer;
inflating the annular air bag until the annular air bag is attached to the wall of the measuring pipeline and the wall of the water-resisting layer, and isolating the permeation channels of the upper water-bearing layer and the lower water-bearing layer;
the water level is measured from the measuring pipe.
The water sample collection of the multilayer groundwater level measuring machine is carried out by adopting the operation method, the operation is simple and quick, and the water level and water quality information of the aquifer (n+1th layer) to be measured can be accurately obtained.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. by adopting the control system for measuring the water level of the multilayer groundwater and taking the water sample and the operation method thereof, the water level measurement and the sampling can be directly carried out through the measurement pipeline during the measurement, the water level and the water quality information of the aquifer to be measured can be obtained, the detection is accurate, reliable and quick, the structure is simple, and the operation is easy.
2. The invention adopts the calabash-shaped annular air bag to effectively increase the effective contact area between the air bag and surrounding soil body, thereby achieving better water-proof effect.
3. According to the invention, the water passing holes and the filter screen are arranged within the range of 2m at the bottom end of the high-strength PVC pipe, so that the underground water in the lower water-bearing layer can effectively infiltrate into the PVC pipe, and the condition that the underground water in the lower water-bearing layer cannot enter the PVC pipe and the water level of the underground water in the lower water-bearing layer cannot be measured due to the fact that the pipe orifice at the bottom end of the PVC pipe is inserted into the soil layer is prevented.
4. The control system for measuring the water level of the multilayer groundwater and taking the water sample has the advantages of low production cost, high production efficiency, easy purchase and carrying of materials and saving of a large amount of transportation cost and material cost.
5. The operation method for measuring the water level of the multilayer groundwater and taking the water sample is convenient and quick to operate, is beneficial to saving engineering cost, shortening construction period and has obvious economic and social benefits.
6. The invention has wide application range, and is suitable for geotechnical engineering investigation, engineering geological investigation and hydrogeological investigation in different industries such as constructional engineering, municipal engineering, highway engineering, bridge engineering, railway engineering, water conservancy and hydropower engineering, mine engineering and the like.
Drawings
FIG. 1 is a schematic cross-sectional view of the control system for multilayer groundwater level measurement and water sampling according to example 1;
FIG. 2 is a side view of the annular balloon of example 1;
FIG. 3 is a front view of the annular balloon of example 1;
fig. 4 is a top view of the annular balloon of example 1.
Icon: 1-drilling holes; 2-measuring a pipeline; 3-annular balloon; 4-water passing holes; 5-filtering the mixture; 6-an electronic measuring instrument for the underground water level; 7-an inflation tube; 8-controlling a valve; 9-an air supply device; 10-a sensor; 11-cable rope measurement; 12-a water taking device; 13-a water-barrier layer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a control system for multilayer groundwater level measurement and water sample collection, which mainly comprises three parts: an isolating device part, an air supply device part and a water level measuring and water taking device part. Wherein: the isolating device consists of a calabash-shaped annular air bag 3, a measuring pipeline 2 and a filter screen 5; the annular air bag 3 is sleeved with the measuring pipeline 2 and can be inflated, the outer contour of the annular air bag 3 adopts a calabash shape, so that the effective contact area between the air bag and surrounding soil can be effectively increased, and a good water-proof effect is achieved; the measuring pipeline 2 is used for extending into the drilling hole 1, the measuring pipeline 2 in the embodiment adopts a high-strength PVC pipe, two ends of the measuring pipeline are communicated, the water passing hole 4 is formed in the side wall of at least one end of the measuring pipeline 2, when the measuring pipeline is used, the position of the water passing hole 4 is downwards lowered, underground water in the lower aquifer can be effectively permeated into the PVC pipe, and the problem that the underground water in the lower aquifer cannot enter the PVC pipe due to the fact that the pipe orifice at the bottom end of the PVC pipe is inserted into the soil layer is prevented, so that the underground water level in the lower aquifer cannot be measured is avoided; the filter screen 5 is used for being wound at the water passing holes 4 to filter sand materials with larger particle sizes, so that the sand materials are prevented from being blocked when entering the pipeline. The air supply device part comprises an air charging pipe 7, a control valve 8 and an air supply device 9 (the air supply device 9 in the embodiment adopts an inflator), wherein the control valve 8 is integrally arranged on the air charging pipe 7 and used for adjusting the ventilation air pressure, and the air charging pipe 7 is used for connecting the air supply device 9 and the annular air bag 3. The water level measuring device part comprises a water level electronic measuring instrument, a sensor 10, a cable measuring rope 11 and a water taking device 12, and is used for water level measurement and water body sampling. Each combined component in the control system has a light structure, the materials are easy to purchase and carry, and a large amount of transportation cost and material cost are saved.
When the measuring device is used, a water passing hole 4 with the diameter of 5mm is arranged in the range of 2m at the bottom of the measuring pipeline 2 on site, and a filter screen 5 is wound outside the water passing hole 4; the calabash-shaped annular air bag 3 is sleeved outside the measuring pipeline 2, and the air charging pipe 7 is firmly connected with the calabash-shaped annular air bag 3. After the drill hole 1 drills to the n+1 layer water-bearing layer, the high-strength PVC measuring pipeline 2, the calabash-shaped annular air bag 3 and the air charging pipe 7 are placed down, the calabash-shaped annular air bag 3 is guaranteed to be positioned in the water-resisting layer 13 at the upper part of the n+1 layer water-bearing layer, air is fed into the air charging pipe 7 by utilizing the air supply device 9 (the inflator) until the calabash-shaped annular air bag 3 is inflated fully and presses the surrounding water-resisting layer 13 and the measuring pipeline 2, the outer wall of the calabash-shaped annular air bag 3 is closely attached to the water-resisting layer 13, the inner annular wall of the calabash-shaped annular air bag 3 is closely attached to the outer side wall of the measuring pipeline 2, and therefore an infiltration channel of the upper water-bearing layer and the lower water-bearing layer (namely an nth water-bearing layer and an n+1 layer water-bearing layer are separated, wherein the nth water-bearing layer is positioned at the upper part of the water-resisting layer) is arranged at the end part of the air charging pipe 7, and the control valve 8 is installed. Under the action of atmospheric pressure, the water level in the measuring pipeline 2 is restored to the natural water level of the (n+1) th layer of the water-bearing layer.
Then the sensor 10, the cable measuring rope 11 and the water taking device 12 are put in from the top of the measuring pipeline 2, when the sensor 10 reaches the water level in the high-strength PVC pipe, the water level electronic measuring instrument gives an alarm and displays the depth of the underground water level, wherein the depth is the underground water level of the (n+1) th layer of water-bearing layer, and meanwhile, the water taking device 12 also obtains the underground water sample in the (n+1) th layer of water-bearing layer.
The control system for measuring the water level of the multilayer groundwater and taking the water sample provided by the embodiment can isolate the water seepage channels of the upper and lower aquifers at the position of the water-resisting layer 13 through the annular air bag 3, so that the influence of the upper aquifer on the measurement of the water level of the lower aquifer is avoided; under the atmospheric pressure effect, the groundwater of the water-bearing layer to be measured can enter the measuring pipeline 2 through the water passing hole 4 of the side wall of the bottom end of the measuring pipeline 2 until the groundwater is flush with the water level of the water-bearing layer to be measured, the process is not influenced by the water pressure of the water-bearing layer of the upper layer, water level measurement and sampling can be directly carried out from the measuring pipeline 2 during measurement, and water level and water quality information of the water-bearing layer to be measured can be obtained. The control system is suitable for measuring the water level of each layer of underground water and taking water samples in the field under the conditions of different drilling depths 1, including multi-layer complex underground water such as upper layer water stagnation, multi-layer diving and multi-layer pressure-bearing water, has low production cost, high production efficiency and convenient operation, is favorable for saving engineering cost, shortening construction period and has obvious economic and social benefits.
Example 2
The embodiment provides an operation method for measuring the water level of multi-layer groundwater and taking the water sample, which adopts the control system for measuring the water level of multi-layer groundwater and taking the water sample provided in the embodiment 1, and comprises the following steps:
and firstly, after drilling holes to n+1 layers of aquifers, lowering the measuring pipeline 2 until the annular air bag 3 on the measuring pipeline 2 is positioned in the water-resisting layer 13 at the upper part of the n+1 layers of aquifers, wherein n is any positive integer, and determining the value of n, namely the position of the aquifer to be measured, according to the surveying working condition. Wherein, the one end that is equipped with water hole 4 on the measurement pipeline 2 sets up downwards.
And step two, inflating the annular air bag 3 by utilizing the air supply device 9 until the annular air bag 3 is attached to the wall of the measuring pipeline 2 and the wall of the water-resisting layer 13, and isolating the permeation channels of the upper water-bearing layer and the lower water-bearing layer.
And thirdly, after the water level in the pipeline 2 to be measured is restored to the natural water level of the (n+1) th layer of water-bearing layer, measuring the water level from the measuring pipeline 2 and obtaining a water sample. According to the principle of the communicating vessel, the water level measured from the measuring pipeline 2 is the water level of the groundwater in the aquifer to be measured. In practical engineering application, in order to obtain an accurate water level value, the water level can be measured after a long enough interval, and the measured value is used as a water level value to be measured; or measuring the water level once at proper intervals, forming gradients by the water level values, and taking the stable water level value as the water level of the groundwater of the aquifer to be measured when the variation of the water level value approaches zero.
And then taking out the measuring pipeline 2, continuing to drill downwards according to the actual working condition, and measuring the groundwater level of the (n+2) -th layer of the water-bearing layer according to the method when the groundwater of the (n+2) -th layer is found, and the like.
The operation method solves the problem that the water level of each layer of underground water in the field under the conditions of different drilling depths and containing multiple layers of complex underground water (upper layer water stagnation, multiple layers of diving and multiple layers of pressure bearing water) is accurately measured, and also can simultaneously solve the problem that the water samples are difficult to obtain and accurately test for different aquifers under the conditions of multiple layers of underground water, is convenient and quick to operate, and can accurately obtain the water level and water quality information of the aquifer to be tested (n+1th layer), thereby being beneficial to shortening the construction period and saving the construction cost.
After the well hole is drilled and the drilling tool is extracted, large gushing flow cannot be formed by groundwater in the multilayer aquifer, the influence of the groundwater in the nth aquifer on the permeation of the aquifer to be tested (n+1 layer) is small, at the moment, the construction interval time of placing the measuring pipeline and isolating the water seepage channels of the upper aquifer and the lower aquifer by inflating the annular air bag is small, the isolation of the water seepage channels of the upper aquifer and the lower aquifer can be realized in a short time, and the aquifer to be tested is influenced by atmospheric pressure only through the measuring pipeline.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A control system for multilayer groundwater level measurement and water sample are taken, its characterized in that is including being used for stretching into measuring pipeline (2) of drilling (1), measuring pipeline (2) both ends switch on, annular gasbag (3) have been cup jointed on measuring pipeline (2)'s the lateral wall, annular gasbag (3) are used for setting up in waterproof layer (13), annular gasbag (3) can aerify.
2. The control system for measuring the water level of multi-layer groundwater and taking water samples according to claim 1, wherein the sidewall of at least one end of the measuring pipe (2) is provided with a water passing hole (4).
3. The control system for measuring the water level of multi-layer groundwater and taking water samples according to claim 2, wherein a plurality of water passing holes (4) are provided, and a plurality of water passing holes (4) are circumferentially arranged along the measuring pipeline (2) and are arranged at intervals along the length direction of the measuring pipeline (2).
4. The control system for measuring the water level of multi-layer groundwater and taking water samples according to claim 2, characterized in that the water passing holes (4) are provided with filter screens (5).
5. Control system for multilayer groundwater level measurement and water sampling according to claim 1, characterized in that it further comprises water level measuring means for measuring the water level in the measuring pipe (2).
6. The control system for multilayer groundwater level measurement and water sampling according to claim 5, characterized in that the water level measuring device comprises a groundwater level electronic measuring instrument (6), a cable measuring rope (11) and a sensor (10), the groundwater level electronic measuring instrument (6) is connected with the sensor (10) through the cable measuring rope (11), the sensor (10) is used for extending into the measuring pipeline (2).
7. The control system for multi-layer groundwater level measurement and water sampling according to claim 6, characterized in that the bottom of the sensor (10) is provided with a water collector (12).
8. The control system for multilayer groundwater level measurement and water sampling according to any of claims 1-7, characterized in that the annular air bag (3) is connected to the air supply device (9) through an air charging tube (7), the air charging tube (7) is provided with a control valve (8).
9. Control system for multilayer groundwater level measurement and water sampling according to any of claims 1-7, characterized in that the outer contour of the annular balloon (3) is gourd-shaped.
10. A method of operation for multilayer groundwater level measurement and water sampling, characterized in that a control system for multilayer groundwater level measurement and water sampling according to any one of claims 1-9 is employed, comprising the steps of:
lowering the measuring pipeline (2) until the annular air bag (3) on the measuring pipeline (2) is positioned in the water-resisting layer (13) at the upper part of the n+1 water-bearing layer, wherein n is a positive integer;
inflating the annular air bag (3) until the annular air bag (3) is attached to the wall of the measuring pipeline (2) and the wall of the water-resisting layer (13), and isolating the permeation channels of the upper water-bearing layer and the lower water-bearing layer;
the water level is measured from the measuring pipe (2).
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| CN215639651U (en) * | 2021-09-23 | 2022-01-25 | 天津绿茵景观生态建设股份有限公司 | Device for quickly measuring height of underground water level |
| CN217180060U (en) * | 2022-02-28 | 2022-08-12 | 长安大学 | A sampling device for mine groundwater monitoring |
| CN114778188A (en) * | 2022-03-18 | 2022-07-22 | 吉林省生态环境监测中心 | Water sampling equipment for environmental monitoring |
| CN114858230A (en) * | 2022-03-28 | 2022-08-05 | 江苏航运职业技术学院 | Groundwater water level dynamic prediction system and many aquifers water measuring device |
| CN217629803U (en) * | 2022-07-08 | 2022-10-21 | 深圳市建设综合勘察设计院有限公司 | Groundwater layering stagnant water structure and survey device |
| CN115305894A (en) * | 2022-07-08 | 2022-11-08 | 深圳市建设综合勘察设计院有限公司 | Underground water layered water stop structure, surveying device and water stop method |
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