Underground water interaction radon gas dynamic monitoring system and method based on taper spiral silicone rubber membrane tube

Abstract

The invention discloses an underground water interaction radon gas dynamic monitoring system and method based on a taper spiral silicone rubber membrane tube. The system comprises a taper spiral silicone rubber membrane tube, an air sealing tube, an air circulation system and a radon gas detector, the taper spiral silicone rubber membrane tube comprises taper spiral parts and a cylindrical part, and the taper spiral parts are arranged at the two ends of the cylindrical part respectively; the section of the taper spiral part is gradually reduced from the joint of the taper spiral part and the cylindrical part; ribs are arranged on the inner wall of the cylindrical part; the air sealing pipe is annularly arranged outside the taper spiral silicone rubber membrane pipe; and the air sealing pipe is respectively connected with the air circulation system and the radon gas detector through connecting pieces. According to the method, the limitation of a traditional monitoring means is broken through, and reliable real-time data support is provided for watershed scale water resource management and ecological protection decision making.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of radioisotope hydrological monitoring, more specifically, it relates to a groundwater interactive radon gas dynamic monitoring system and method based on a tapered spiral silicone rubber membrane tube. BACKGROUND

[0002] In the field of environmental science and technology, especially in the context of groundwater and surface water interaction research, the measurement technology of radon isotope (222Rn) has always been a challenge. As a radioactive gas, 222Rn is produced by the decay of 226Ra in rocks and minerals and is part of the 238U decay chain. Due to its low solubility in water, short half-life (about 3.8 days), and chemical and biological properties as an inert gas, it has become an ideal natural tracer for tracing groundwater and surface water interaction. However, traditional 222Rn measurement methods have obvious limitations.

[0003] These traditional methods mainly rely on the collection of discrete point samples, that is, collecting water samples at specific locations and times, and then analyzing them in the laboratory by liquid scintillation counting (LSC). LSC technology involves liquid-liquid extraction using solvents, and then counting 222Rn in the sample. Although this method is accurate, it is costly, time-consuming and complex to operate, limiting its widespread use in the field. In addition, due to the short half-life of 222Rn and its low activity in surface water, samples must be measured quickly, which further limits its application in remote areas or situations where it is difficult to quickly transport samples to the laboratory.

[0004] In addition to LSC, another traditional method is to strip radon gas from water samples and then use radon gas detectors (such as Lucas scintillation cell, ionization chamber or solid-state silicon detector) to measure the released gas. These methods also face the problems of complex operation, high cost and time sensitivity. For example, Durridge RAD7, as a commonly used radon gas detector, although widely used in the field of environmental science, still requires professional operation in the measurement process, and it is difficult to achieve continuous and real-time monitoring.

[0005] In recent years, the technology based on continuous monitoring of silica gel membrane (such as the equal-diameter straight tube silica gel membrane structure proposed by Hofmann et al. in 2011) has improved the shortcomings of traditional methods to some extent, but still has significant defects. The equal-diameter straight tube design adopted by it has low radon diffusion efficiency due to limited gas-liquid contact area, and it takes more than 180 minutes for the system to reach gas-liquid equilibrium, making it difficult to capture hourly-scale dynamic changes. The flow velocity distribution in the straight tube structure is uneven, and turbulence and secondary flow are easily formed at the end, causing periodic vibration of the membrane tube, resulting in fluctuations in the measurement signal and a decrease in precision. In long-term field deployment, suspended particles and biofilms are easily deposited in the low-flow area of the straight tube, causing membrane pore blockage and performance degradation, and significantly shortening the service life of the equipment. In addition, the existing system relies on a single-point contact temperature sensor for radon solubility temperature compensation, which cannot reflect the thermal gradient distribution along the silica gel tube caused by environmental temperature difference and fluid heat exchange, especially in scenarios with significant diurnal temperature difference or seasonal monitoring, which will introduce systematic errors.

[0006] Traditional measurement methods such as LSC and gas stripping can provide laboratory-level precision, but their discrete sampling mode makes it difficult to capture hourly to weekly-scale interactions, and they are limited by the complexity, high cost, and timeliness requirements of field deployment. Even with the existing technology of silica gel membrane continuous monitoring, there are still significant defects: the straight tube configuration has low radon diffusion efficiency due to limited gas-liquid contact area, and the system takes more than 180 minutes to reach equilibrium, making it impossible to meet the monitoring needs of sudden hydrological events; the uneven flow velocity distribution in the equal-diameter design flow channel causes the membrane tube to vibrate due to end turbulence, resulting in a measurement signal fluctuation of ±12%; suspended solids and biofilms are easily deposited in the low-flow area of the straight tube, causing pore blockage and shortening the service life of the equipment to 28 days; the single-point temperature compensation scheme ignores the along-path thermal gradient, introducing a systematic error of 3.2% Bq / ℃ in environments with significant diurnal temperature difference.

[0007] The limitation of these traditional measurement techniques is that they cannot provide detailed information about short-term to medium-term processes (from hours to weeks) at the groundwater-surface water interface. Therefore, in order to better understand and quantify the discharge of groundwater into rivers, lakes, and coastal environments, a new method is needed that can perform high-resolution, automatic, and continuous measurement of 222Rn. This method should be able to work autonomously in the field and be sensitive enough to capture the dynamic changes in groundwater-surface water interactions, providing more accurate data for water resource management and hydrological cycle research.

[0008] Therefore, it is important to invent a groundwater interaction radon dynamic monitoring system based on a tapered spiral silicone rubber membrane tube. SUMMARY

[0009] The present application aims to develop an innovative radon continuous monitoring method and system to realize dynamic quantification of groundwater-surface water interaction with high spatiotemporal resolution. This breakthrough in technology with high spatiotemporal resolution and environmental robustness not only breaks through the limitations of traditional monitoring methods, but also provides reliable real-time data support for watershed-scale water resource management and ecological protection decision-making.

[0010] In order to solve at least one of the above technical problems, according to an aspect of the present application, a groundwater interaction radon dynamic monitoring system based on a tapered spiral silicone rubber membrane tube is provided, comprising: a tapered spiral silicone rubber membrane tube, an air sealing tube, an air circulation system and a radon detector;

[0011] The tapered spiral silicone rubber membrane tube, the air sealing tube, the air circulation system and the radon detector;

[0012] The tapered spiral silicone rubber membrane tube comprises a tapered spiral part and a cylindrical part, and the tapered spiral parts are respectively arranged at both ends of the cylindrical part; the cross section of the tapered spiral part gradually decreases from the connection with the cylindrical part; and a rib is arranged on the inner wall of the cylindrical part;

[0013] The air sealing tube is arranged outside the tapered spiral silicone rubber membrane tube; and the air sealing tube is connected with the air circulation system and the radon detector through connecting pieces.

[0014] Further, the inner wall thickness of the tapered spiral silicone rubber membrane tube linearly decreases from the inlet section to the outlet section.

[0015] Further, the rib axis forms an angle of 30°-60° with the axial direction of the tube body.

[0016] Further, the air circulation system comprises a desiccant unit.

[0017] In order to solve at least one of the above technical problems, according to an aspect of the present application, a groundwater interaction radon dynamic monitoring method based on a tapered spiral silicone rubber membrane tube is provided, comprising the following steps:

[0018] The tapered spiral silicone rubber membrane tube, the air sealing tube and the solid radon detector are coupled to realize continuous high temporal resolution monitoring of groundwater-surface water interaction.

[0019] Preferably, the tapered spiral silicone rubber membrane tube comprises a tapered spiral part and a cylindrical part, and the tapered spiral parts are respectively arranged at both ends of the cylindrical part; the cross section of the tapered spiral part gradually decreases from the connection with the cylindrical part; a rib is arranged on the inner wall of the cylindrical part; the air sealing tube is arranged outside the tapered spiral silicone rubber membrane tube; and the air sealing tube is connected with the air circulation system and the radon detector through connecting pieces, thereby completing the coupling.

[0020] Preferably, a tapered helical silicone rubber membrane tube is provided and a self-cleaning flow regime is constructed within the tube.

[0021] Preferably, the self-cleaning flow regime is derived from the superposition of three geometric-hydrodynamic coupling effects:

[0022] Tapered wall thickness: the membrane wall linearly thins from the inlet section to the outlet section (e.g. from about 1.5 mm to 0.5 mm), which increases the effective diffusion area per unit length while ensuring mechanical strength and forms a gentle pressure drop gradient along the flow path, which promotes continuous renewal of the near-wall layer.

[0023] Helical curvature effect (Dean vortices): the cylindrical-helical combined geometry generates stable pairs of secondary flows when Re≈10 3 -10 3 orders of magnitude, which periodically transport high-momentum fluid to the near-wall region within the tube cross-section, thinning the boundary layer thickness δ and improving the membrane surface shear and mass renewal rate.

[0024] 3) Inner wall rib-guided shear: the rib axis is at an angle of 30°-60° to the tube axis, which causes the main flow to form a small-scale additional shear and micro-recirculation zone at the rib top / trough, and after superimposing the helical primary vortex, completes the "sweeping-rolling-releasing" cycle within one pitch: "sweeping" is the local high-shear instantaneous lifting of adherent particles and nascent biofilm at the rib top; "rolling" is the secondary flow rolling the wall particles into the high-momentum main flow; "releasing" is the particles transported downstream with the flow and taken away from the membrane surface area by the air-water counter-circulation loop.

[0025] According to another aspect of the present application, a method for monitoring the dynamic interaction of groundwater and radon gas based on a tapered helical silicone rubber membrane tube is provided, comprising the following steps:

[0026] According to another aspect of the present application, a computer readable storage medium is provided, which stores a computer program that, when executed by a processor, implements the steps of the method for monitoring the dynamic interaction of groundwater and radon gas based on a tapered helical silicone rubber membrane tube.

[0027] According to yet another aspect of the present application, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the program, implements the steps of the method for monitoring the dynamic interaction of groundwater and radon gas based on a tapered helical silicone rubber membrane tube.

[0028] Compared with the prior art, the above-mentioned method of the present application has the following advantages:

[0029] This invention features high resolution and continuous monitoring capabilities: By innovatively coupling a wedge-shaped spiral silicone rubber diffuser tube with a solid-state radon detector (RAD7), it achieves continuous, high-temporal-resolution monitoring of groundwater-surface water interactions. Compared to traditional single-point measurements, this system can capture short- to medium-term dynamic changes, providing precise data support for analyzing rapid responses in the hydrological cycle (such as heavy rainfall events). For example, in the A River experiment, the system reached 90% gas-water balance within 76 minutes, 193% faster than traditional straight pipes, significantly improving dynamic response capabilities.

[0030] Autonomous Operation and Long-Term Stability: The system is optimized for long-term autonomous operation in the field, capable of continuous operation for 3-4 weeks without intervention. Its low maintenance requirements stem from its anti-clogging spiral silicone rubber tubing structure and self-cleaning flow design, increasing the critical Reynolds number to 2400 and effectively reducing sediment and biofilm adhesion. Furthermore, the system remains stable under extreme temperature (-20℃ to 60℃) and humidity conditions, ensuring data continuity. This long-term stability is particularly important for continuous monitoring in remote areas.

[0031] Low power consumption and environmental friendliness: The system features a low-power design, requiring only a micro-pump operating at a flow rate of 1L / min, consuming less than 500mA of power. It can be powered by an 80W solar panel and a 7-12Ah battery. Compared to traditional air-water exchangers, the wedge-shaped spiral structure reduces humidity in the air loop, decreasing the frequency of desiccant replacement to once every 4 weeks. This design not only reduces operating costs but also decreases dependence on fossil fuels, making it suitable for long-term deployment in ecologically sensitive areas. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0033] Figure 1 This is a schematic diagram of a silicone rubber radon diffusion "tube-in-tube" structure in a preferred embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of a monitoring system in a preferred embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram illustrating the working principle of the system in a preferred embodiment of the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0037] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0038] Example 1:

[0039] Figures 1-3 As shown, this invention proposes a dynamic monitoring system for groundwater radon gas interaction based on a tapered spiral silicone rubber membrane tube. The system includes:

[0040] The key component of this system is a silicone rubber diffusion tube with a unique wedge-shaped spiral structure. Its outer side is a commercially available reinforced PVC pressure hose with an inner diameter of 13mm, while the inner side is a medical-grade silicone rubber tube with an outer diameter between 6 and 7mm and a wall thickness that linearly decreases axially. The inner surface of this silicone rubber tube features ribs with a height of 0.2mm and a spacing of 2mm. The rib axes are at an angle of 30°-60° to the tube's axial direction, causing the wall thickness to gradually change from 1.5mm at the inlet to 0.5mm at the outlet. Both ends of the PVC hose are sealed with permanently installed fittings to ensure the system's airtightness and stability. During operation, sample water flows through the inner silicone rubber tube, while radon gas, thanks to the wedge-shaped spiral structure and micro-rib design of the silicone rubber tube wall, diffuses more efficiently into the air within the outer PVC tube sheath. This design improves diffusion efficiency while preventing direct contact between the water and the detector, reducing the risk of contamination and equipment damage.

[0041] To achieve better response time and measurement accuracy, three key parameters were focused on and optimized. By comparing the effects of membrane tubes of different lengths (2m, 5m, and 10m) on the gas-liquid equilibrium time, it was found that increasing the membrane tube length increases the radon exchange surface area and improves the response speed. Simultaneously, after testing silicone rubber tubes with different wall thicknesses (0.5mm, 1mm, and 1.5mm), it was determined that a wall thickness of 0.5mm or 1mm achieves the optimal balance between accelerating radon diffusion and maintaining mechanical stability. Furthermore, adjusting the water flow rate (0.66L / min, 1.3L / min, and 2.5L / min) revealed that, considering energy consumption and on-site operational feasibility, increasing the water flow rate shortens the time to reach gas-liquid equilibrium.

[0042] The system is also equipped with a precise temperature measurement device, employing a T-type thermocouple and a data logger, which can compensate for the influence of water temperature on the radon water partition coefficient, ensuring the accuracy of the measurement results. For radon detection, the Durridge RAD7 radon detector is used. This detector utilizes a solid-state passivated ion-implanted silicon crystal to count the decay of 222Rn progeny 218Po and 214Po under high voltage, and can distinguish between their alpha decay pulses, achieving precise measurement of 222Rn activity. This study uses the 218Po channel to obtain the maximum time resolution, meeting the system's high-efficiency detection requirements. The anti-fouling capability and temperature compensation accuracy of the aforementioned wedge-shaped spiral structure silicone rubber tube also provide strong support for the overall system performance improvement, enabling it to better complete the radon monitoring task.

[0043] like Figure 2 As shown,

[0044] Outer layer: A cylindrical PVC pressure tube with an inner diameter of 13mm, which is transparent or white in color.

[0045] Inner layer: A standard laboratory-grade silicone rubber tube with an outer diameter of 6-7mm is located inside the PVC tube, forming a "tube-in-tube" structure.

[0046] Connectors: Two 8mm pipe fittings are installed at both ends of the PVC pipe, which are connected to the air circulation system and the radon detector (such as RAD7) respectively.

[0047] Desiccant unit: A desiccant unit is connected to a section of the PVC pipe, and its function is marked as removing moisture from the air.

[0048] Flow direction: Arrows indicate the direction of water and air flow. Water flows in from the inner silicone rubber tube, and radon gas diffuses from the water into the air inside the PVC tube sheath, where it is then measured by a detector.

[0049] like Figure 3 As shown,

[0050] Water source: A bucket is indicated to represent the source of groundwater or river water.

[0051] Pump: A small pump is marked between the water source and the silicone rubber hose to indicate the direction of water flow.

[0052] Silicone rubber tubing: Shows the path of the silicone rubber tubing, connecting to the PVC pipe.

[0053] Radon detector: Marked as RAD7 detector, connected to the air section of the PVC pipe sheath.

[0054] Data logging: A data logger is marked next to the detector to indicate real-time monitoring and recording of 222Rn activity.

[0055] Flow direction: Arrows indicate the direction of water and air flow, emphasizing that radon gas diffuses from the water into the air and is measured by the detector.

[0056] System Construction: The system construction of this invention uses a tapered spiral silicone rubber membrane tube (TINT) as the core component. This tube consists of a medical-grade silicone rubber tube (outer diameter 6-7mm, Shore A hardness 45±3) nested within a reinforced PVC pressure hose with an inner diameter of 13mm, forming a closed double-pipe structure. The silicone rubber tube inlet and outlet are equipped with 8mm pipe fittings, connecting the PVC sheath air circulation loop to the Durridge RAD7 radon gas detector, ensuring unobstructed and sealed airflow. This design not only achieves effective water-gas separation but also constructs a closed air circulation system through the connection of the PVC sheath air circulation loop and the RAD7 detector, providing a stable foundation for subsequent radon gas detection.

[0057] Operation Procedure: During system operation, sample water is pumped into the inner silicone rubber tube at a flow rate of 1 L / min using a micro-pump. The water flow inside the tube exhibits a spiral flow pattern, achieving a critical Reynolds number of 2400. This flow pattern significantly enhances the efficiency of radon diffusion from the water to the outside of the tube. Simultaneously, air from the PVC sheath circulates in the opposite direction using the RAD7's built-in pump, forming a highly efficient gas-water exchange interface and further improving the efficiency of radon gas transfer from the aqueous phase to the gas phase. Experimental data shows that the system achieves 90% gas-water balance within 76 minutes, a significantly shorter response time compared to the 183 minutes required for traditional straight tubes. This rapid gas-water balance provides a strong guarantee for timely and accurate radon gas detection.

[0058] Temperature Compensation: To ensure the accuracy of measurement results, the system integrates a T-type thermocouple and a Lascar data logger to monitor water flow temperature in real time with an accuracy of ±0.1℃. Based on the real-time measured water temperature data, the system can dynamically correct the Ostwald solubility coefficient, compensating for water temperature variations ranging from 4 to 30℃. Experimental results show that after temperature compensation, the measurement deviation of 222Rn is strictly controlled within ±1.1% Bq / ℃, significantly better than the ±3.2% Bq / ℃ accuracy of the traditional system. This precise temperature compensation mechanism is crucial for ensuring the reliability of measurement results, as even small changes in water temperature can affect the distribution of 222Rn between the gas and water phases.

[0059] Radon Detection System: This system employs a Durridge RAD7 radon detector to measure the activity of 222Rn. Operating at approximately 2200V ground potential, the RAD7 utilizes a solid-state passivated ion-implanted silicon crystal detector, enabling precise counting of the decay of 222Rn progeny 218Po and 214Po. Its unique pulse shape discrimination technology allows the RAD7 to effectively distinguish the alpha decay signals of 218Po and 214Po, thus achieving accurate quantification of rapid changes in 222Rn. In this study, the 218Po detection channel was specifically utilized, improving the time resolution to 20 seconds per data point, seven times faster than the conventional mode, significantly enhancing the system's ability to monitor short- to medium-term hydrological changes.

[0060] Experimental Setup: To optimize the diffusion system and determine the optimal response time, we conducted a series of experiments under field conditions on the bank of River B. The experiments compared the effects of different silicone rubber tube lengths (2 m, 5 m, and 10 m), wall thicknesses (0.5 mm, 1.0 mm, and 1.5 mm), and water flow rates (0.66 L / min, 1.3 L / min, and 2.5 L / min) on the system response time. Through these experiments, we found that the 10-meter-long silicone rubber tube, due to its largest surface area, could shorten the equilibrium time by 34%; a 0.5 mm wall thickness increased the diffusion rate by 120% while maintaining the hydrostatic mechanical stability of a column ≥150 ± 5 mm; and a water flow rate of 1.3 L / min achieved the optimal balance between equilibrium time and energy consumption. Based on these findings, we optimized the system design to ensure its high efficiency and reliability in practical applications.

[0061] Point measurement validation: During the experiment, we used the RAD H2O kit to perform five repeated measurements on discrete water samples taken from the water tank to obtain a benchmark for comparison with continuous monitoring data. The correlation coefficient between these point measurement data and the continuous monitoring data reached R. 2 =0.967, with an average deviation of only 2.3%, while the deviation of traditional methods is as high as 8.7%. Furthermore, the consistency of the detection limit was also verified, with an error of less than 10%. These results fully demonstrate the accuracy and reliability of the system's measurements, providing a solid foundation for data interpretation in practical applications.

[0062] Detection Limit Determination: To determine the system's detection limit, we ran the RAD7 instrument in a closed-loop system using an activated carbon filter capable of quantitatively adsorbing all radon gas in the air. Experimental results showed that the instrument's background detection limit for 222Rn was 5.2 Bq / m³ at the 3σ level. 3A 10-minute counting time was used. Determining this detection limit is crucial for evaluating system performance and data interpretation. It demonstrates the system's high sensitivity, enabling it to detect low concentrations of 222Rn activity changes, thus providing strong support for the accurate monitoring of groundwater-surface water interactions.

[0063] Field Deployment Validation: To test the system's field applicability, we installed the optimized system at Jiahu Lake and ran it continuously for approximately four days. During this period, we observed that the changes in 222Rn activity were significantly greater than those explained by degassing and decay, clearly indicating a dynamic interaction between groundwater and surface water. Specifically, the heavy rainfall event caused the peak 222Rn activity to reach 19800 Bq / m³. 3 Compared to the background value of 13200 Bq / m 3 There was a significant increase; the daily variation ranged from 27 to 312 Bq / m³. 3 Between these values, the correlation with water level fluctuations reaches R0. 2 =0.89; system drift was strictly controlled at <0.3% / d, far below the industry standard of <5% / d. These field data not only verified the stability and reliability of the system, but also provided important scientific evidence for understanding the changes in water quality and quantity in the river system, proving the effectiveness and practicality of this system in actual hydrological monitoring.

[0064] This invention achieves multi-dimensional breakthroughs through an innovative tapered spiral membrane tube structure. In this embodiment, the membrane tube features a 1.5mm wall thickness at the inlet section to resist mechanical impact, gradually transitioning to a 0.5mm thin-walled structure along the flow direction to improve radon diffusion efficiency. Combined with an adjustable spiral angle of 30°-60°, the effective contact area is increased by 2.8 times compared to a straight tube, successfully shortening the system response time to 76 minutes. The secondary flow induced by the spiral flow channel forms a self-cleaning flow pattern, raising the critical Reynolds number to 4200, effectively suppressing particulate matter deposition and extending the continuous operation cycle to 63 days. Real-time acquisition of the membrane tube's axial temperature field data via a distributed fiber optic temperature measurement network, combined with an established radon solubility thermal gradient compensation model, reduces temperature sensitivity to ±1.1% Bq / ℃. The optimized system can operate autonomously for over 42 days under complex environmental conditions, achieving precise quantification of dynamic changes in radon activity within 3 hours, providing minute-level response capabilities for groundwater interaction studies of transient processes such as rainstorm infiltration and tidal modulation.

[0065] Example 2:

[0066] The computer-readable storage medium of this embodiment stores a computer program that, when executed by a processor, implements the steps in the groundwater interactive radon dynamic monitoring method based on a tapered spiral silicone rubber membrane tube of Embodiment 1.

[0067] The computer-readable storage medium in this embodiment can be an internal storage unit of the terminal, such as the terminal's hard disk or memory; the computer-readable storage medium in this embodiment can also be an external storage device of the terminal, such as a plug-in hard disk, smart memory card, secure digital card, flash memory card, etc. equipped on the terminal; furthermore, the computer-readable storage medium can include both the terminal's internal storage unit and external storage devices.

[0068] The computer-readable storage medium of this embodiment is used to store computer programs and other programs and data required by the terminal. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0069] Example 3:

[0070] The computer device of this embodiment includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps in the dynamic monitoring method for groundwater interactive radon gas based on tapered spiral silicone rubber membrane tube of Embodiment 1.

[0071] In this embodiment, the processor can be a central processing unit, or other general-purpose processors, digital signal processors, application-specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc. The memory can include read-only memory and random access memory, and provides instructions and data to the processor. A portion of the memory can also include non-volatile random access memory. For example, the memory can also store device type information.

[0072] Those skilled in the art will understand that the content disclosed in the embodiments can be provided as a method, system, or computer program product. Therefore, this solution can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this solution can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage) containing computer-usable program code.

[0073] This solution is described with reference to flowchart illustrations and / or block diagrams of methods and computer program products according to embodiments of this solution. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0074] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0075] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0076] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0077] The examples described herein are merely preferred embodiments of the invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the invention without departing from the design concept of the invention should fall within the protection scope of the invention.

Claims

1. A groundwater interactive radon gas dynamic monitoring system based on tapered helical silicone rubber membrane tube, characterized in that, It comprises: a tapered spiral silicone rubber membrane tube, an air sealing tube, an air circulation system and a radon detector; the tapered spiral silicone rubber membrane tube comprises a tapered spiral part and a cylindrical part, and the tapered spiral parts are respectively arranged at two ends of the cylindrical part; the cross section of the tapered spiral part gradually decreases from the connection with the cylindrical part; and the inner wall of the cylindrical part is provided with ribs; the air sealing tube is annularly arranged outside the tapered spiral silicone rubber membrane tube; and the air sealing tube is connected with the air circulation system and the radon detector through connecting pieces.

2. The system of claim 1, wherein, The inner wall thickness of the tapered spiral silicone rubber membrane tube linearly decreases from the inlet section to the outlet section.

3. The system of claim 2, wherein, The axis of the ribs forms an angle of 30°-60° with the axial direction of the tube body.

4. The system of claim 3, wherein, The air circulation system comprises a desiccant unit.

5. A method for dynamic monitoring of groundwater exchangeable radon gas based on tapered helical silicone rubber membrane tube, characterized in that, It comprises the following steps: coupling the tapered spiral silicone rubber membrane tube, the air sealing tube and the solid radon detector for continuous high time resolution monitoring of the interaction between groundwater and surface water.

6. The method of claim 5, wherein, The tapered spiral silicone rubber membrane tube comprises a tapered spiral part and a cylindrical part, and the tapered spiral parts are respectively arranged at two ends of the cylindrical part; the cross section of the tapered spiral part gradually decreases from the connection with the cylindrical part; and the inner wall of the cylindrical part is provided with ribs; the air sealing tube is annularly arranged outside the tapered spiral silicone rubber membrane tube; and the air sealing tube is connected with the air circulation system and the radon detector through connecting pieces, thereby completing the coupling.

7. The method of claim 6, wherein, The tapered spiral silicone rubber membrane tube is arranged and a self-cleaning flow state is constructed in the tube.

8. The method of claim 7, wherein, The self-cleaning flow state constructed in the tube specifically comprises three kinds of geometric hydrodynamic coupling effects, which are: The inner wall thickness of the tapered spiral silicone rubber membrane tube gradually changes, and the inner wall thickness linearly decreases from the inlet section to the outlet section; Spiral curvature effect, cylindrical-spiral combined geometry at Re ~ 10 3 - 10 3 magnitudes produce stable pair vortices that periodically transport high-momentum fluid within the pipe cross-section to the near-wall region, thinning the boundary layer thickness δ; The inner wall ribs guide shearing, and the axis of the ribs forms an angle of 30°-60° with the axial direction of the tube body, so that the main flow forms a small-scale additional shearing and micro-recirculation zone at the rib top / groove valley, and the cycle process of "sweeping-rolling-releasing" is completed within one pitch after superimposing the spiral main vortex: "sweeping" is to locally lift the adhered particles and primary biofilm at the rib top by high shearing for a moment; "rolling" is to roll the particles away from the wall into the high-momentum zone of the main flow by the secondary flow; and "releasing" is to transport the particles downstream along the flow and take them away from the membrane surface area by the air-water reverse circulation loop.

9. A computer readable storage medium having stored thereon a computer program, characterized in that: The program is executed by the processor to implement the steps in the method for monitoring the radon dynamics of groundwater interaction based on the tapered spiral silicone rubber membrane tube according to any one of claims 5-8.

10. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the steps in the method for monitoring the radon dynamics of groundwater interaction based on the tapered spiral silicone rubber membrane tube according to any one of claims 5-8.

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