Device and method for analyzing and monitoring chemical properties of water-conducting fissure groundwater in a roadway borehole

Abstract

Embodiments of the present application relate to the field of testing liquids in boreholes or wells, and in particular to a device and method suitable for analyzing and monitoring the chemical properties of groundwater in a roadway borehole. The device and method set a sealing assembly in the water-conducting fracture of the roadway borehole, and set other components of the device outside the borehole, which facilitates the maintenance and calibration of the components outside the borehole, to ensure that the device can operate effectively for a long time; at the same time, the overall size of the device is not limited by the space of the borehole and the environment, so that the monitoring data of the device fully reflects the chemical properties of the groundwater in the water-conducting fracture, and then comprehensively evaluates the water chemical environment of the monitoring section, to assist in the selection of underground engineering site and long-term performance safety evaluation; the pipeline is used to make multiple monitoring sections and other components in fluid communication, and the pressure of multiple monitoring sections is monitored, which can make the collection and reflux of groundwater in a sealed state and under normal pressure, prevent groundwater samples from being contaminated, and ensure that the monitoring data is accurate and effective.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of testing liquids in boreholes or wells, and in particular to a device and method for analyzing and monitoring the chemical properties of groundwater in a borehole. BACKGROUND

[0002] The statements herein are merely provided to aid in understanding the present application and are not necessarily intended to constitute prior art.

[0003] The construction of underground nuclear facility engineering is of great significance to the sustainable and healthy development of the nuclear industry. In underground nuclear facility engineering, the most important way for harmful radionuclides to return to the human environment is through the migration and diffusion of groundwater. During the migration of radionuclides in groundwater, chemical reactions such as dissolution, precipitation, and adsorption occur continuously between radionuclides, groundwater, and rock. The type of chemical reaction and the degree of influence on radionuclide migration mainly depend on the chemical characteristics of groundwater. Therefore, hydrogeochemical information is indispensable in the selection of underground nuclear facility sites and long-term performance safety evaluation. For some abnormal physical and chemical parameters, including temperature, electrical conductivity, pH value, oxidation-reduction potential (ORP), dissolved oxygen (DO), and other parameters, in-situ monitoring must be carried out to obtain reliable data.

[0004] In addition, with the development of metal mineral resources in recent years, the construction of underground oil storage facilities and other underground engineering development have also put forward unprecedented urgent demands for long-term, in-situ monitoring of the chemical environment of deep rock fissure groundwater. SUMMARY

[0005] A brief summary of the present application is presented in the following to provide a basic understanding of some aspects of the present application. It should be understood that this summary is not an extensive overview of the present application. It is not intended to identify key or critical elements of the present application or to delineate the scope of the present application. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

[0006] The device for analyzing and monitoring the chemical properties of groundwater in a water-conducting fracture in a roadway borehole comprises a sealing assembly, a pressure monitoring assembly, a pipeline, a power component, a pipeline flow path control assembly, and an analysis and monitoring assembly. The sealing assembly is arranged to divide the fracture in the borehole into a plurality of monitoring sections. The pressure monitoring assembly is arranged to monitor the pressure of the plurality of monitoring sections. The pipeline is arranged to fluidly connect the plurality of monitoring sections, the pressure monitoring assembly, the pipeline flow path control assembly, and the analysis and monitoring assembly. The power component is arranged to provide power for the flow of groundwater in the pipeline, so as to form a groundwater flow cycle between the monitoring sections and the analysis and monitoring assembly. The pipeline flow path control assembly is arranged to control the on-off of the flow of groundwater in the pipeline. The analysis and monitoring assembly is arranged to analyze and monitor the chemical properties of the groundwater in the pipeline according to the pressure of the plurality of monitoring sections. The sealing assembly is arranged in the borehole, and the pressure monitoring assembly, the power component, the pipeline flow path control assembly, and the analysis and monitoring assembly are arranged outside the borehole.

[0007] The method for analyzing and monitoring the chemical properties of groundwater in a water-conducting fracture in a roadway borehole comprises the following steps: S10: arranging the borehole, and placing the sealing assembly into the borehole after the arrangement of the borehole is completed; and S20: analyzing and monitoring the chemical properties of the groundwater in the fracture in the borehole by using the analysis and monitoring assembly in the device.

[0008] The device for analyzing and monitoring the chemical properties of groundwater in a water-conducting fracture in a roadway borehole provided by the embodiment of the present application has the following advantages. The sealing assembly is arranged in the water-conducting fracture in the roadway borehole to divide the fracture in the borehole into a plurality of monitoring sections, and other components of the device are arranged outside the borehole, so that the maintenance and calibration of the components outside the borehole are facilitated, and the long-term and effective operation of the device is ensured. The arrangement of the device in the borehole avoids the limitation of the size of the device by the space in the borehole and the harsh environment, so that the analysis and monitoring functions of the device are fully exerted, and the chemical properties of the groundwater in the water-conducting fracture in the roadway borehole are fully reflected, so that the water chemical environment of the roadway borehole is comprehensively evaluated according to the chemical property data, and the selection of a site for a nuclear facility and the long-term performance and safety evaluation of the site are assisted. The plurality of monitoring sections, the pressure monitoring assembly, the pipeline flow path control assembly, and the analysis and monitoring assembly are fluidly connected by the pipeline, and the pressure of the plurality of monitoring sections is monitored at the same time, so that the acquisition and reflux of the groundwater are in a sealed state and the pressure is normal, the groundwater sample is prevented from being contaminated, and the accuracy and effectiveness of the monitoring data are ensured.

[0009] The method provided in this application for analyzing and monitoring the chemical properties of groundwater in water-conducting fractures in tunnel boreholes, due to the use of the aforementioned device, can ensure the accuracy and validity of the monitoring data, so as to fully reflect the chemical properties of groundwater in water-conducting fractures in tunnel boreholes. Thus, the hydrochemical environment of tunnel boreholes can be comprehensively evaluated based on the chemical property data, so as to assist in the site selection and long-term performance safety evaluation of underground nuclear facilities. Attached Figure Description

[0010] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0011] Figure 1 This is a schematic diagram of the structure of an apparatus provided in an embodiment of this application for analyzing and monitoring the chemical properties of groundwater in water-conducting fractures in roadway boreholes.

[0012] Explanation of reference numerals in the attached figures:

[0013] 10. Packing assembly; 101. Borehole; 102. Monitoring section; 103. Water-conducting fracture; 11. First packer; 12. Second packer; 13. Third packer; 14. Hollow pipe fitting; 20. Pressure monitoring assembly; 21. Pressure display assembly; 211. Pressure sensor; 212. Pressure gauge; 22. Support and fixing assembly; 221. Bracket; 222. Fixture; 30. Pipeline; 31. Pressure monitoring pipeline; 32. Flow path control pipeline; 321. First fluid path; 322. Second fluid path; 40. Power unit; 50. Pipeline flow path control assembly; 51. Pipeline flow path control component; 60. Analysis and monitoring assembly; 70. Protective housing; 80. Tracer dosing assembly; 100. Applicable device for analyzing and monitoring the chemical properties of groundwater in water-conducting fractures in roadway boreholes. Detailed Implementation

[0014] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0015] Here, it also needs to be pointed out that, in order not to obscure the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0016] The following disclosure provides a plurality of different embodiments or examples for implementing the present application. In order to simplify the disclosure of the present application, the components and methods of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In the description of the embodiments of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0017] At present, the monitoring and analysis of groundwater in borehole fissures includes manual sampling monitoring, simple online sensor monitoring, and fixed-point monitoring, etc. conventional technical means, but the above technical means mainly have the following limitations and deficiencies: the manual sampling monitoring method has the disadvantages of poor timeliness, high cost, and easy sample pollution; the simple online sensor monitoring method has the disadvantages of poor adaptability, limited monitoring parameters, no guarantee for long-term stability, and difficult sampling, etc.; the existing fixed-point monitoring device is usually used for long-term monitoring of water quality of surface wellbores or large-diameter boreholes, and usually has a large volume and a complex structure, and cannot be directly applied to narrow roadway boreholes with limited space, humid environment, and mine pressure influence. Therefore, there is currently no method that can realize efficient, accurate, long-term and adaptable monitoring and analysis of groundwater in borehole fissures.

[0018] In view of the above problems, the embodiments of the present application provide a device for analyzing and monitoring the chemical properties of groundwater in the water-conducting fissures of a roadway borehole, Figure 1 is a structural schematic diagram of the device for analyzing and monitoring the chemical properties of groundwater in the water-conducting fissures of a roadway borehole provided by the embodiments of the present application, as shown in Figure 1As shown, the device 100 includes a sealing assembly 10, a pressure monitoring assembly 20, a pipeline 30, a power component 40, a pipeline flow path control assembly 50, and an analysis monitoring assembly 60. The sealing assembly 10 is arranged to seal fractures in the borehole 101 into a plurality of monitoring sections 102. The pressure monitoring assembly 20 is arranged to monitor the pressure of the plurality of monitoring sections 102. The pipeline 30 is arranged to fluidly connect the plurality of monitoring sections 102, the pressure monitoring assembly 20, the pipeline flow path control assembly 50, and the analysis monitoring assembly 60. The power component 40 is arranged to provide power for the flow of groundwater in the pipeline 30 to form a groundwater flow cycle between the monitoring sections 102 and the analysis monitoring assembly 60. The pipeline flow path control assembly 50 is arranged to control the on-off of the flow of groundwater in the pipeline 30. The analysis monitoring assembly 60 is arranged to analyze and monitor the chemical properties of the groundwater in the pipeline 30 based on the pressure of the plurality of monitoring sections 102. The sealing assembly 10 is arranged in the borehole 101, and the pressure monitoring assembly 20, the power component 40, the pipeline flow path control assembly 50, and the analysis monitoring assembly 60 are arranged outside the borehole 101.

[0019] The device 100 according to the embodiments of the present application is suitable for analyzing and monitoring the chemical properties of groundwater in water-conducting fractures in a borehole. The sealing assembly 10 is arranged in the fractures in the borehole 101 to divide the fractures in the borehole 101 into a plurality of monitoring sections 102, and other components of the device are arranged outside the borehole 101, which facilitates the maintenance and calibration of the components outside the borehole 101, thereby ensuring that the device can operate effectively for a long time. Arranging part of the device in the borehole 101 can avoid the limitation of the overall size of the device by the space of the borehole and the harsh environment, so that the analysis and monitoring functions of the device can be fully utilized to fully reflect the chemical properties of groundwater in water-conducting fractures in the borehole 101, thereby comprehensively evaluating the water chemical environment of the borehole according to the chemical property data to assist in the selection of a site for a nuclear facility and the long-term performance and safety evaluation. The pipeline 30 fluidly connects the plurality of monitoring sections 102, the pressure monitoring assembly 20, the pipeline flow path control assembly 50, and the analysis monitoring assembly 60, and the pressure of the plurality of monitoring sections 102 is monitored at the same time, which can ensure that the acquisition and reflux of groundwater are in a sealed state and the pressure is normal, thereby preventing the contamination of groundwater samples and ensuring the accuracy and effectiveness of the monitoring data.

[0020] In some embodiments, the sealing assembly 10 includes a first sealing member 11, a second sealing member 12, a third sealing member 13, and a hollow pipe member 14. The hollow pipe member 14 is arranged in the borehole 101 and extends in the borehole 101. The first sealing member 11, the second sealing member 12, and the third sealing member 13 are fixed to the outside of the hollow pipe member 14 and abut against the hole wall of the borehole 101, so as to seal the fractures in the borehole 101 into a plurality of monitoring sections 102. This facilitates the independent monitoring of the water-conducting fractures 103 and the groundwater in the fractures, so as to make the monitoring results scientific and effective.

[0021] In some embodiments, the first packer 11, the second packer 12 and the third packer 13 are arranged to be deformable, for example, to be inflated by the pipeline 30 in a hydraulic or pneumatic manner, so as to abut against the borehole wall of the borehole 101, to facilitate adjustment of the packers in the limited space of the borehole 101 after the packer assembly 10 is arranged, and to ensure the reliability of the packer.

[0022] In some embodiments, the pipeline 30 is arranged to extend partially inside the hollow tube 14 and into the monitoring sections 102, so as to provide sufficient extension space for the pipeline 30, while avoiding direct exposure of the pipeline 30 to the borehole environment, to prolong the service life of the pipeline 30.

[0023] In some embodiments, as shown in FIG. 1, the monitoring sections 102 are arranged such that the water conducting fracture 103 passes through one of the monitoring sections 102, and the other monitoring sections 102 are arranged on both sides of the water conducting fracture 103, and a part of the pipeline 30 is used to fluidly connect the monitoring sections 102 with the pressure monitoring assembly 20, to monitor the pressure on both sides of the water conducting fracture 103, respectively, to determine the sealing effect. Figure 1

[0024] In some embodiments, the first packer 11 is arranged to reduce the water pressure on both ends of the second packer 12, to better protect the monitoring sections 102.

[0025] In some embodiments, the first packer 11 is arranged to withstand a maximum formation pressure greater than or equal to 100 bar, to ensure long-term stability of the monitoring sections 102.

[0026] In some embodiments, the hollow tube 14 is externally coated with an anticorrosive material (for example, a perfluoroalkoxy alkane coating), to prevent corrosion of the hollow tube 14, to maintain the stability of the connection between the first packer 11, the second packer 12 and the third packer 13, and to avoid affecting the mutual independence of the monitoring sections 102.

[0027] In some embodiments, the hollow tube 14 can be provided with a sealing structure (for example, an O-ring) at both ends, to prevent impurities from entering and damaging the pipeline 30.

[0028] In some embodiments, the pressure monitoring assembly 20 includes a plurality of pressure display assemblies 21 and a support and fixing assembly 22, the pressure display assemblies 21 are arranged on the support and fixing assembly 22 and are arranged to monitor the pressure of the monitoring sections 102 and display the pressure; the pipeline 30 is arranged to be fixedly connected with the support and fixing assembly 22, to monitor the internal pressure of the monitoring sections 102, the first packer 11, the second packer 12 and the third packer 13, to determine the monitoring state.​

[0029] In some embodiments, the pipeline 30 can be connected to the support fixing assembly 22 by a stainless steel sleeve to avoid pipeline 30 bending and wear.

[0030] In some embodiments, the pressure display assembly 21 includes a pressure sensor 211 and a pressure gauge 212, and the support fixing assembly 22 includes a support 221 and a fixing member 222. The pressure sensor 211 is arranged to monitor the pressure of the monitoring sections 102, and the pressure gauge 212 is arranged to display the pressure. The pressure gauge 212 is arranged to be fixed to one end of the support 221, and the pressure sensor 211 is arranged to be fixed to the other end of the support 221 by the fixing member 222. The pipeline 30 is arranged in the support 221. By arranging the pressure sensor 211 and the pressure gauge 212 at both ends of the support 221 respectively, the support 221 and the fixing member 222 are more stable.

[0031] In some embodiments, the support 221 can be arranged to connect the lower end to the fixing member 222 to better fix the relative positions of the pressure sensor 211 and the pressure gauge 212.

[0032] In some embodiments, the pressure gauge 212 can be mechanical to facilitate reading data at any time and better adapt to the deep environment of the roadway.

[0033] In some embodiments, the pipeline 30 is arranged to pass through the hollow pipe 14 and directly communicate with the underground water or gas in the monitoring section 102, so that the pressure gauge 212 connected to the pipeline 30 can directly and accurately obtain the pressure data in the monitoring section 102.

[0034] In some embodiments, the support 221 is a hollow support, so that the pressure monitored by the pressure sensor 211 is consistent with the pressure displayed by the pressure gauge 212, to more accurately monitor the pressure data in the monitoring sections 102.

[0035] In some embodiments, the pipeline 30 can be arranged to include a pressure monitoring pipeline 31 and a flow path control pipeline 32. The pressure monitoring pipeline 31 is used to communicate the monitoring section 102 with the pressure monitoring assembly 20 to realize pressure monitoring of the monitoring section 102. The flow path control pipeline 32 is used to communicate the monitoring section 102 with the analysis monitoring assembly 60 to transport the gas or underground water in the monitoring section 102 to the analysis monitoring assembly 60 for analysis. In this way, the pipelines with different functions can be avoided to be confused, and the control difficulty is reduced.

[0036] In some embodiments, a control valve can be arranged between the pressure monitoring pipeline 31 and the pressure gauge 212 to control the flow of the underground water or gas in the monitoring section 102. Before starting the monitoring, the control valve can be closed and the pressure gauge 212 can be calibrated.

[0037] In some embodiments, the pipeline flow path control assembly 50 comprises a plurality of pipeline flow path controls 51, each of which is arranged to correspond to a plurality of monitoring sections 102 to control the opening and closing of the pipeline 30 in fluid communication with the monitoring sections 102, so as to control the flow direction of the groundwater during the analysis monitoring process.

[0038] In some embodiments, at least one pipeline flow path control 51 is arranged on each flow path control pipeline 32, so as to control each branch individually.

[0039] In some embodiments, a protective box 70 is further included, and the pipeline flow path control assembly 50, the pressure monitoring assembly 20, and the analysis monitoring assembly 60 are arranged in the protective box 70 to reduce the loss of the device and enable long-term stable operation.

[0040] In some embodiments, a valve protection bracket can be arranged in the protective box 70 to protect the valve between the pipeline 30 and the pressure gauge 212, and the valve protection bracket is fixed to the protective box 70 by bolts, so that the pressure monitoring assembly 20 is fixed as a whole relative to the protective box 70, thereby enhancing the stability of the device.

[0041] In some embodiments, the analysis monitoring assembly 60 can be fixed to the protective box 70 by screws to ensure that each component works independently and is protected from external interference.

[0042] In some embodiments, the flow path control pipeline 32 can comprise a first liquid path 321 and a second liquid path 322, the first liquid path 321 being used to transport the groundwater in the monitoring section 102 through which the water-conducting fracture 103 passes to the analysis monitoring assembly 60, and the second liquid path 322 being used to transport the analyzed groundwater from the analysis monitoring assembly 60 back to the monitoring section 102 through which the water-conducting fracture 103 passes, so as to realize the circulation of the groundwater.

[0043] In some embodiments, during the monitoring process, the pipeline flow path control on the first liquid path 321 can be opened to allow the groundwater in the monitoring section 102 to flow into the analysis monitoring assembly 60 through the first liquid path 321, and the pipeline flow path control on the second liquid path 322 can be opened to allow the analyzed groundwater in the analysis monitoring assembly 60 to flow back to the monitoring section 102 through the second liquid path 322; and at the same time, the pipeline flow path controls on the other pipelines in the flow path control pipeline 32 are closed, and the flow meter and the power member 40 are opened, so as to complete the circulation of the groundwater.

[0044] In some embodiments, the analysis monitoring assembly 60 is arranged to have a plurality of sensors to obtain and analyze the temperature, water pressure, pH, conductivity, oxidation-reduction potential, dissolved oxygen, and other parameters of the water-conducting fracture 103, and the plurality of sensors are arranged to work independently, so that the replacement and calibration of a sensor during the monitoring process will not affect the normal monitoring of other sensors.

[0045] In some embodiments, the multiple sensors in the analysis and monitoring component 60 can be water chemistry sensors, including multiple probes for temperature, water pressure, pH, conductivity, redox potential, dissolved oxygen, etc., which can be removed or added as needed; the water chemistry sensors can be connected to a data acquisition unit, which is configured to have internal storage function, export monitoring data, and also transmit data remotely via the Beidou system; the data acquisition unit is connected to a display for convenient real-time viewing of monitoring data.

[0046] In some embodiments, during the monitoring process, the water circulation rate can be monitored in real time by a flow meter. To ensure that the groundwater in the monitoring section 102 through which the water-conducting fracture 103 passes is in a laminar flow state, the flow rate of pipeline 30 can be set to 300~400 mL / min. The analysis and monitoring component 60 can control the flow rate of pipeline 30 through the power component 40.

[0047] In some embodiments, the pipeline 30 may be made of polyetheretherketone (PEEK) material to give the pipeline 30 corrosion resistance and prevent chemical adsorption.

[0048] In some embodiments, the packer assembly 10 may be modularly designed, with the packer size determined accordingly based on the borehole size, so that the division of the monitoring section is more in line with the specific conditions of the borehole and ensures the effectiveness of the packer.

[0049] In some embodiments, such as Figure 1 As shown, a tracer delivery component 80 may also be provided inside the borehole 101 for delivering tracers into the monitoring section 102 (for example, injecting the tracer into the monitoring section 102 through a high-pressure injection pump), and the analysis and monitoring component 60 monitors the diffusion of the tracer in real time to facilitate in-situ tracer test research.

[0050] Another embodiment of this application provides a method for analyzing and monitoring the chemical properties of groundwater in water-conducting fractures in roadway boreholes, which employs the aforementioned apparatus and includes the following steps: S10: Arranging boreholes 101, and after the boreholes 101 are arranged, placing the sealing assembly 10 into the boreholes 101; S20: Analyzing and monitoring the chemical properties of groundwater in the fractures within the boreholes 101 using the analysis and monitoring assembly 60 in the apparatus.

[0051] The method provided in this application for analyzing and monitoring the chemical properties of groundwater in water-conducting fissures in tunnel boreholes, due to the use of the aforementioned device, can ensure the accuracy and validity of the monitoring data, so as to fully reflect the chemical properties of groundwater in water-conducting fissures in tunnel borehole 101. Thus, the hydrochemical environment of tunnel borehole 101 can be comprehensively evaluated based on the chemical property data, so as to assist in the site selection and long-term performance safety evaluation of underground nuclear facilities.

[0052] In some embodiments, the step S10 further comprises the following steps: S11, determining the position of the drill hole 101; S12, determining the type and size of the drill hole 101 according to the position, so that the drill hole 101 matches the water flowing fracture 103.

[0053] In some embodiments, in the step S12, if the water flowing fracture 103 of the monitoring section 102 has a steep dip angle, a horizontal drill hole is used; if the water flowing fracture 103 of the monitoring section 102 has a gentle dip angle, a downward inclined drill hole is used, and the drill hole is approximately perpendicular to the fracture; if the fracture is upwardly inclined, the monitoring condition is not met.

[0054] In some embodiments, in the step S11, the trend, tendency, dip angle, width, and distance from the wall of the water flowing fracture 103 can be determined, and the length of the monitoring section 102 from the wall is set to be greater than 3 times the width of the chamber, and the complete surrounding rock on both sides of the monitoring section 102 is not less than 5m, so as to avoid the influence of the release of ground stress.

[0055] In some embodiments, the step S10 further comprises the following steps: S13, determining the hollow pipe 14 according to the type and size of the drill hole 101; S14, installing the pipeline 30 in the hollow pipe 14; S15, sealing the fracture in the drill hole 101 into multiple monitoring sections 102. By installing the pipeline 30 in the hollow pipe 14, it is helpful to safely send the pipeline 30 into the drill hole 101, and the prior installation of the sealing assembly 10 and the pipeline 30 helps the subsequent installation and adjustment of the external parts of the drill hole 101, avoids the change of the internal setting of the drill hole 101, and improves the installation efficiency.

[0056] In some embodiments, after the pipeline 30 is installed in the hollow pipe 14 in the step S15, the third sealing part 13 and the hollow pipe 14 with the pipeline 30 installed therein can be installed in a predetermined order on the side of the water flowing fracture 103 away from the ground, and the third sealing part 13 is expanded by water pressure or pneumatic method through the pipeline 30, so as to achieve the sealing of one end of the monitoring section. During the expansion process, the reading of the pressure gauge 212 needs to be stable at about 100bar; after the pressure is stable, the second sealing part 12 and the first sealing part 11 are installed in the same way, that is, the sealing parts are installed in the order from the side away from the ground to the side close to the ground, which is helpful to the stable air pressure in the subsequent installation process.

[0057] In some embodiments, in the step S20, it is determined that the sealing assembly 10 is in good operation, so that the pressure level in the multiple monitoring sections 102 is normal.

[0058] In some embodiments, in the step S20, if the pressure level in the multiple monitoring sections 102 is normal, it is determined that the sealing assembly 10 is in good operation. Figure 1As shown, after the packer assembly 10 is placed into the borehole 101 and the components outside the borehole 101 are installed, the pipeline flow control member 51 on the flow path control pipeline 32 is closed, the communication between the monitoring section 102 and the analysis monitoring assembly 60 is cut off, and the control valve between the pressure monitoring pipeline 31 and the pressure gauge 212 is opened. According to the pressure data of the pressure gauge, it is determined whether the packer assembly 10 is in good operating condition. If there is a significant water head difference between the monitoring section passing through the water conducting fracture 103 and the monitoring sections on both sides thereof and the data is relatively stable, it indicates that the determination and division of the monitoring section 102 are effective, otherwise the monitoring sections on both sides of the water conducting fracture 103 need to be adjusted to make the data stable, so that the subsequent monitoring data is effective.

[0059] In some embodiments, in the step S20, according to the type of the sensor in the analysis monitoring assembly 60, the calibration period of the sensor is determined, so that the monitoring data obtained by different kinds of sensors is effective.

[0060] In some embodiments, the calibration period of the conductivity sensor is not more than 6 months, the calibration period of the pH sensor is not more than 1 month, the calibration period of the oxidation-reduction potential sensor is not more than 3 months, and the calibration period of the dissolved oxygen sensor is not more than 3 months.

[0061] For the embodiments of the present application, it also needs to be explained that, in the case of no conflict, the embodiments and the features in the embodiments of the present application can be combined with each other to obtain new embodiments.

[0062] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device suitable for analyzing and monitoring the chemical properties of water flowing through fractures in a borehole, characterized in that, It comprises: a sealing assembly, a pressure monitoring assembly, a pipeline, a power component, a pipeline flow path control assembly, and an analysis monitoring assembly, the sealing assembly is arranged to seal fissures in the borehole into multiple monitoring sections; the pressure monitoring assembly is arranged to monitor the pressure of the multiple monitoring sections; the pipeline is arranged to fluidly connect the multiple monitoring sections, the pressure monitoring assembly, the pipeline flow path control assembly, and the analysis monitoring assembly; the power component is arranged to provide power for the groundwater flow in the pipeline, so as to form a groundwater flow cycle between the monitoring sections and the analysis monitoring assembly; the pipeline flow path control assembly is arranged to control the on-off of the groundwater flow in the pipeline; the analysis monitoring assembly is arranged to analyze and monitor the chemical properties of the groundwater in the pipeline, and the analysis and monitoring are performed according to the pressure of the multiple monitoring sections, wherein the sealing assembly is arranged in the borehole, and the pressure monitoring assembly, the power component, the pipeline flow path control assembly, and the analysis monitoring assembly are arranged outside the borehole; the pipeline comprises a flow path control pipeline for connecting the monitoring sections and the analysis monitoring assembly to transport the gas or groundwater in the monitoring sections to the analysis monitoring assembly for analysis; the flow path control pipeline comprises a first liquid path for transporting the groundwater in the monitoring sections through the water-conducting fissures to the analysis monitoring assembly, and a second liquid path for transporting the analyzed groundwater from the analysis monitoring assembly back to the monitoring sections through the water-conducting fissures to realize the circulation of groundwater.

2. The device according to claim 1, wherein the sealing assembly comprises a first sealing component, a second sealing component, a third sealing component, and a hollow pipe component, the hollow pipe component is arranged in the borehole and extends in the borehole, the first sealing component, the second sealing component, and the third sealing component are fixed to the outside of the hollow pipe component and abut against the hole wall of the borehole to seal the fissures of the borehole into multiple monitoring sections.

3. The device according to claim 2, wherein the pipeline is arranged to extend partially inside the hollow pipe component and into the multiple monitoring sections.

4. The device according to claim 2, wherein an anti-corrosion material is arranged outside the hollow pipe component.

5. The device according to claim 2, wherein the pressure monitoring assembly comprises a plurality of pressure display assemblies and a support and fixing assembly, the pressure display assemblies are arranged in the support and fixing assembly and are arranged to monitor the pressure of the multiple monitoring sections and display the pressure; the pipeline is arranged to be fixedly connected with the support and fixing assembly.

6. The device according to claim 5, wherein the pressure display assemblies comprise pressure sensors and pressure gauges, and the support and fixing assembly comprises a bracket and a fixing component, the pressure sensors are arranged to monitor the pressure of the multiple monitoring sections, and the pressure gauges are arranged to display the pressure; the pressure gauges are arranged to be fixed to one end of the bracket, The pressure sensor is arranged to be fixed to the other end of the support by the fixing member, The pipeline is arranged in the support.

7. The apparatus of claim 6, wherein The support is a hollow support, so that the pressure monitored by the pressure sensor is consistent with the pressure displayed by the pressure gauge.

8. The apparatus of claim 1, wherein The pipeline flow path control assembly comprises a plurality of pipeline flow path control members, each of which is arranged to correspond to a plurality of the monitoring sections, to control the opening and closing of the pipeline in fluid communication with the monitoring sections.

9. The apparatus of any one of claims 1-8, wherein Further comprising a protective box, and the pipeline flow path control assembly, the pressure monitoring assembly and the analysis monitoring assembly are arranged in the protective box.

10. A method suitable for analyzing and monitoring the chemical properties of water- conducting fractured groundwater in a mine tunnel, characterized in that, The apparatus of any one of claims 1-9 is used, comprising the following steps: S10: arranging the borehole, after the arrangement of the borehole is completed, placing the pack-off assembly into the borehole; S20: using the analysis monitoring assembly in the apparatus to analyze and monitor the chemical properties of the water flowing fractured groundwater in the borehole.

11. The method of claim 10, wherein In the step S10, further comprising the following steps: S11: determining the position of the borehole; S12: according to the position, determining the type and size of the borehole.

12. The method of claim 11, wherein In the step S10, further comprising the following steps: S13: according to the type and size of the borehole, determining the hollow pipe; S14: installing the pipeline in the hollow pipe; S15: sealing the fractures in the borehole into a plurality of monitoring sections.

13. The method according to any one of claims 10-12, characterized in that, In the step S20, it is determined that the pack-off assembly is working well.

14. The method of claim 10, wherein In the step S20, according to the type of the sensor in the analysis monitoring assembly, the calibration period of the sensor is determined.

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