Water flowing fractured zone detection device

Abstract

The utility model provides a water flowing fractured zone detection device, which comprises a water pipe, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water inlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, and the water inlet pipe is sequentially provided with a water inlet section and a water outlet section; the bag is arranged on the periphery of the water pipe in a sleeving manner, and the radial size of the bag is variable, so that the bag can be attached to the inner wall of the detection hole to block the detection hole; the adjusting pipe is used for injecting a medium into the bag so as to change the radial size of the bag; the temperature sensing optical fiber is provided with a testing section, the testing section is provided with a plurality of temperature measuring points at intervals in the length direction of the temperature sensing optical fiber, and the temperature sensing optical fiber can detect the temperature in the detection hole; the host is electrically connected with the temperature sensing optical fiber, and the host can receive detection data of the multiple temperature measuring points and calculate the height of the water flowing fractured zone according to the detection data. According to the technical scheme provided by the utility model, the problems of complex structure and tedious detection operation of the height detection device for the water flowing fractured zone in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel water-conducting fracture zone detection, in particular to a water-conducting fracture zone detection device. Background Art

[0002] During coal mining, roof maintenance is crucial for maintaining stable tunnel operations. Failure to maintain roof maintenance can lead to roof accidents, including severe water seepage, spalling, and roof collapse, resulting in significant economic losses. Mining activities disrupt the roof's inherent stress balance, inducing damage and deformation. This can cause cracks in the roof strata, which then expand and form fracture zones. Water in these fracture zones can lead to leakage between them and the tunnel roof, compromising the stability of the tunnel and the working face.

[0003] Currently, before conducting mine roadway maintenance work, roof maintenance condition testing and roadway roof stability testing are typically required to analyze the extent of the mining impact on the roadway roof, determine its severity, and then formulate appropriate maintenance measures. Roof maintenance condition testing primarily examines roof maintenance conditions such as the height of the fracture zone above the roadway roof, the water filling within the fracture zone, the water filling pressure within the fracture zone, and the strength of the roof rock. Roadway roof stability testing primarily examines the stability of the roadway roof rock to determine whether the roadway can continue to operate safely.

[0004] Existing techniques for measuring the height of the fracture zone above the tunnel roof can be performed using electrical testing and fiber optic monitoring. However, fiber optic monitoring requires complex equipment and is cumbersome to operate. Electrical testing analyzes the damage to the overburden by measuring electrical parameters such as the resistivity of the rock formation. This method can generate an electrical distribution map of the rock formation, helping to understand the overall damage status of the formation. However, it also suffers from complex testing structures and inconvenient operation. Utility Model Content

[0005] The utility model provides a water-conducting fracture zone detection device, which solves the problems of complex structure and cumbersome detection operation of water-conducting fracture zone height detection devices in the prior art.

[0006] The utility model provides a water-conducting fracture zone detection device, which is used to detect the depth of the water-conducting fracture zone above the tunnel roof. The water-conducting fracture zone detection device includes: a water pipe, which has a water inlet section and a water outlet section arranged in sequence, the water inlet section is connected to a water source, and the water outlet section is used to inject water into a detection hole in the rock formation; a bag, which is sleeved on the outer circumference of the water pipe and is located at one end of the water inlet section close to the water outlet section, the radial size of the bag being changeable so that the bag can fit with the inner wall of the detection hole to block the detection hole; an adjustment tube, which is connected to the bag and is used to inject a medium into the bag to change the radial size of the bag; a temperature-sensing optical fiber, which has a test section, and the test section is provided with a plurality of temperature measuring points at intervals along the length direction of the temperature-sensing optical fiber, the test section and the water outlet section are both located on the same side of the bag, and the temperature-sensing optical fiber can detect the temperature in the detection hole; and a host computer, which is electrically connected to the temperature-sensing optical fiber, and the host computer can receive detection data of the plurality of temperature measuring points and calculate the height of the water-conducting fracture zone according to the detection data.

[0007] Furthermore, a plurality of water outlet holes are provided on the side wall of the water outlet section, and the plurality of water outlet holes are arranged at intervals along the extension direction of the water outlet section. The test section is arranged in the water outlet section, and the extension direction of the test section is the same as that of the water outlet section.

[0008] Furthermore, a perforation is provided on the water inlet section, the perforation is located on the side of the bag away from the water outlet section, the temperature sensing optical fiber is passed through the perforation, and the test section is passed through the water outlet section through the perforation.

[0009] Furthermore, the water-conducting fracture zone detection device also includes a guide wheel, which is arranged at the end of the water outlet section away from the water inlet section, and the guide wheel can guide the moving direction of the water pipe in the detection hole.

[0010] Furthermore, the water-conducting fracture zone detection device also includes a circulation pipeline and a pump body, both of which are located outside the detection hole, the water inlet section and the regulating pipe are both connected to the circulation pipeline, one end of the circulation pipeline is connected to the pump body, and the pump body is used to connect to the water source to pump the water in the water source into the circulation pipeline.

[0011] Furthermore, the water-conducting fracture zone detection device also includes a flow regulating component, which is arranged on the circulation pipeline and is used to regulate the flow of the fluid in the circulation pipeline.

[0012] Furthermore, the flow regulating component includes a flow monitoring meter and a pressure monitoring meter, which are arranged sequentially on the circulation pipeline and located upstream of the water pipe. The flow monitoring meter can monitor the flow value in the circulation pipeline, and the pressure monitoring meter can monitor the pressure value in the circulation pipeline.

[0013] Furthermore, the flow regulating component also includes a bladder control valve group, which is arranged on the circulation pipeline and located downstream of the pressure monitoring meter. The bladder control valve group is connected to the regulating tube. The bladder control valve group can adjust the radial size of the bladder according to the detection data of the flow monitoring meter and the pressure monitoring meter.

[0014] Furthermore, the bladder control valve group includes a second control valve and a pressure relief valve. The second control valve is arranged on the circulation pipeline. The regulating pipe, the pressure relief valve and the second control valve are connected through a second three-way valve.

[0015] Furthermore, the flow regulating assembly also includes a first control valve, which is located between the pressure monitoring gauge and the bag control valve group. The first control valve, the circulation pipeline and the second control valve are connected through a first three-way valve, and the first control valve is connected to the water inlet section.

[0016] By applying the technical solution of the present invention, multiple temperature measuring points on the test section can detect the temperature in the detection hole. When water is injected into the detection hole through the water outlet section of the water pipe and the water contacts the temperature measuring points on the test section, the temperature of the water is different from the temperature of the air in the detection hole. This will cause the detection temperature of the temperature measuring point to change, thereby knowing the water level in the detection hole and the change in the water level, thereby simplifying the detection operation and calculation difficulty of the height of the water-conducting fracture zone. The bag can ensure the sealing of the water level during the detection process, preventing the water in the detection hole from flowing out of the detection hole, so that the water in the detection hole can only be in the detection hole or enter the surrounding fractures, thereby improving the accuracy of the temperature measuring point detection. Through the above-mentioned arrangement, the structural composition of the water-conducting fracture zone detection device is simplified, which not only facilitates the disassembly and installation between components, but also improves the convenience of the water-conducting fracture zone height detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram showing the water-conducting fracture zone detection device provided by the present invention in a detection hole is shown;

[0019] Figure 2 The following is a schematic diagram showing the structure of the water-conducting fracture zone detection device provided by the present invention;

[0020] Figure 3 The figure shows an assembly diagram of the bag, water pipe and temperature-sensing optical fiber provided by the utility model.

[0021] The above drawings include the following reference numerals:

[0022] 10. Water pipes;

[0023] 11. Water inlet section;

[0024] 111. Perforation; 112. Sealing ring;

[0025] 12. Water outlet section;

[0026] 122, first connector; 123, second connector;

[0027] 20. sac;

[0028] 30. Regulating tube;

[0029] 40. Temperature sensing optical fiber;

[0030] 50. Host;

[0031] 60. Guide wheel;

[0032] 70. Circulation pipelines;

[0033] 71. Pump body;

[0034] 81. Flow monitoring meter; 82. Pressure monitoring meter;

[0035] 83. First control valve;

[0036] 84. Second control valve;

[0037] 85. Pressure relief valve;

[0038] 86. First three-way valve; 87. Second three-way valve;

[0039] 91. Cable ties;

[0040] 01. Detection hole;

[0041] 02. Water-conducting fracture zone;

[0042] 021, fracture zone;

[0043] 022. Collapse zone;

[0044] 03. Curved sinking zone;

[0045] 04. No impact on rock formations. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] like Figures 1 to 3 As shown, an embodiment of the present invention provides a water-conducting fracture zone detection device for detecting the depth of a water-conducting fracture zone above a tunnel roof. The device comprises a water pipe 10, a bag 20, a regulating tube 30, a temperature-sensing optical fiber 40, and a main unit 50. The water pipe 10 comprises a water inlet section 11 and a water outlet section 12, which are arranged in sequence. The water inlet section 11 is connected to a water source, and the water outlet section 12 is used to inject water into a detection hole 01 in the rock formation. The bag 20 is sleeved around the outer circumference of the water pipe 10 and is located at the end of the water inlet section 11 near the water outlet section 12. The radial dimension of the bag 20 is variable, allowing the bag 20 to conform to the inner wall of the detection hole 01 to block the detection hole 01. The regulating tube 30 is connected to the bag 20 and is used to inject a medium into the bag 20 to change its radial dimension. The temperature-sensing optical fiber 40 has a test section with multiple temperature measurement points spaced along its length. The test section and the water outlet section 12 are both located on the same side of the bag 20. The temperature-sensing optical fiber 40 can detect the temperature within the detection hole 01. A host computer 50 is electrically connected to the temperature-sensing optical fiber 40 and can receive detection data from the multiple temperature measurement points and calculate the height of the water-conducting fracture zone based on the detection data.

[0048] The rock mass above the roof consists of, in order, the water-conducting fracture zone 02, the curved subsidence zone 03, and the unaffected rock layer 04. The water-conducting fracture zone 02 includes the sequentially distributed collapse zone 022 and fracture zone 021. The numerous fractures within collapse zone 022 and fracture zone 021 can channel water from the adjacent aquifers through the fractures, ultimately destroying the structure of the water-conducting fracture zone 02 and causing collapse.

[0049] By applying the technical solution of the present invention, multiple temperature measuring points on the test section can detect the temperature within the detection hole 01. When water is injected into the detection hole 01 through the water outlet section 12 of the water pipe 10 and the water contacts the temperature measuring points on the test section, the temperature of the water is different from the temperature of the air within the detection hole 01. This will cause the detected temperature of the temperature measuring points to change, thereby determining the water level within the detection hole 01 and its changes. This simplifies the detection operation and calculation difficulty of the height of the water-conducting fracture zone. The bag 20 can ensure the sealing of the water level during the detection process, preventing the water in the detection hole 01 from flowing out of the detection hole 01, so that the water in the detection hole 01 can only stay in the detection hole 01 or enter the surrounding fractures, thereby improving the accuracy of the temperature measuring point detection. Through the above arrangement, the structural composition of the water-conducting fracture zone detection device is simplified, not only facilitating the disassembly and installation of the components, but also improving the convenience of the water-conducting fracture zone height detection operation. At the same time, the temperature-sensing optical fiber 40 and other key components can be reused, reducing detection costs and improving economic benefits.

[0050] In the present application, there is no limitation on the specific materials of the water inlet section 11 and the water outlet section 12 .

[0051] In this embodiment, the water inlet section 11 is a steel pipe, and the water outlet section 12 is a plastic pipe. The water outlet section 12 can be multiple plastic pipes connected by a first joint 122, and a second joint 123 is provided between the steel pipe and the plastic pipe for connection. In this way, the steel pipe has a certain structural strength and can provide support for the plastic pipe, making it convenient for the water pipe 10 to move in the detection hole 01. In addition, the diameter of the water inlet section 11 is larger than the diameter of the water outlet section 12, so that the water supply is large and the water supply is faster, and it also ensures that the flow rate of the water outlet section 12 is relatively uniform when the water is discharged, further improving the accuracy of the detection.

[0052] Among them, the spacing between the temperature measuring points on the temperature-sensing optical fiber 40 is 0.5 meters, which makes it convenient to calculate the length of the temperature measuring points at different positions in the detection hole 01. By calculating the inclination angle of the detection hole, the height of the temperature measuring point is calculated according to the trigonometric function, and then the height of the water-conducting fracture zone is obtained.

[0053] In this embodiment, there is no limitation on the inclination angle of the detection hole 01 , and a plurality of detection holes 01 with different inclination angles can be drilled to increase the measurement accuracy of the height of the water-conducting fracture zone.

[0054] Specifically, the sidewall of the water outlet section 12 is provided with multiple water outlet holes, spaced apart along the extension direction of the water outlet section 12. The test section is disposed within the water outlet section 12, extending in the same direction as the water outlet section 12. This arrangement not only protects the test section through the water outlet section 12, preventing friction damage between the test section and the detection holes 01 and extending the service life of the test section, but also ensures that the water is evenly distributed around the test section, improving the uniformity and reliability of temperature detection by the temperature-sensing optical fiber 40.

[0055] Preferably, a plurality of water outlet holes are evenly spaced and distributed on the periphery of the water outlet section 12 , so as to ensure the uniformity of water outlet from the water outlet section 12 and ensure that the water body can quickly and evenly enter the detection hole 01 .

[0056] Such as Figure 3 As shown, the water inlet section 11 is provided with a perforation 111, which is located on the side of the bag 20 away from the water outlet section 12. The temperature-sensing optical fiber 40 is passed through the perforation 111, and the test section is passed through the water outlet section 12 via the perforation 111. The above structure ensures the stability and safety of the temperature-sensing optical fiber 40 within the detection hole 01, not only improving the stability of the temperature-sensing optical fiber 40 within the detection hole, but also reducing the risk of damage to the temperature-sensing optical fiber 40 in complex geological conditions, thereby ensuring the continuity and integrity of the detection data.

[0057] Furthermore, a sealing ring 112 is provided at the contact point between the perforation 111 and the temperature-sensing optical fiber 40 to prevent the water in the water outlet section 12 from leaking from the perforation 111 .

[0058] Specifically, the temperature-sensing optical fiber 40 located outside the water outlet section 12 is fixed to the outer wall of the water outlet section 12 by multiple fixing ties 91 to ensure that the temperature-sensing optical fiber 40 is straightened and firmly tied to avoid excessive bending of the temperature-sensing optical fiber 40, which may cause inaccurate detection results.

[0059] Preferably, the temperature-sensing optical fiber 40 located outside the water outlet section 12 is covered with a sheath to prevent the temperature-sensing optical fiber 40 from being damaged.

[0060] like Figure 2 As shown, the water-conducting fracture zone detection device further includes a guide wheel 60, which is disposed at the end of the water outlet section 12 away from the water inlet section 11. The guide wheel 60 can guide the movement direction of the water pipe 10 within the detection hole 01. The provision of the guide wheel 60 can guide and direct the movement of the water pipe 10, making the movement of the water pipe 10 more stable, improving the movement efficiency and positioning accuracy of the water pipe 10 within the detection hole 01, significantly improving the operational flexibility and positioning accuracy of the detection device during the detection process, effectively preventing the water pipe 10 from deflecting and getting stuck within the detection hole 01, and improving the detection efficiency of the water-conducting fracture zone detection device.

[0061] In the present application, the water-conducting fracture zone detection device also includes a circulation pipeline 70 and a pump body 71. The circulation pipeline 70 and the pump body 71 are both located outside the detection hole 01. The water inlet section 11 and the regulating pipe 30 are both connected to the circulation pipeline 70. One end of the circulation pipeline 70 is connected to the pump body 71. The pump body 71 is used to connect to the water source to pump the water in the water source into the circulation pipeline 70.

[0062] Among them, the water-conducting fracture zone detection device also includes a flow regulating component, which is arranged on the circulation pipeline 70 and is used to regulate the flow of the fluid in the circulation pipeline 70 to ensure stable circulation of the fluid in the circulation pipeline 70.

[0063] Specifically, the flow regulating assembly includes a flow monitoring meter 81 and a pressure monitoring meter 82. The flow monitoring meter 81 and the pressure monitoring meter 82 are sequentially arranged on the circulation pipeline 70 and located upstream of the water pipe 10. The flow monitoring meter 81 can monitor the flow value in the circulation pipeline 70, and the pressure monitoring meter 82 can monitor the pressure value in the circulation pipeline 70. Through the above arrangement, the expansion degree of the bag can be adjusted in real time based on the detection data of the flow monitoring meter 81 and the pressure monitoring meter 82 to ensure its close fit with the wall of the detection hole 01, thereby ensuring the sealing effect of the bag 20 on the detection hole 01. Even in the case of changes in the hole diameter or unstable geological conditions, the bag 20 can maintain a good fit with the wall of the detection hole 01, thereby improving the adaptability and safety of the detection device.

[0064] The flow regulating assembly further includes a bladder control valve assembly, which is disposed on the circulation pipeline 70 and downstream of the pressure monitoring meter 82. The bladder control valve assembly is in communication with the regulating tube 30 and can adjust the radial dimension of the bladder 20 based on the detection data of the flow monitoring meter 81 and the pressure monitoring meter 82. The provision of the bladder control valve assembly enables flexible adjustment of the radial dimension of the bladder 20, improving operational convenience.

[0065] Specifically, the bag control valve assembly includes a second control valve 84 and a pressure relief valve 85. The second control valve 84 is disposed on the circulation pipeline 70. The regulating tube 30, the pressure relief valve 85, and the second control valve 84 are connected via a second three-way valve 87. This arrangement enables precise control of the state of the bag 20. This not only allows for rapid expansion of the bag 20 to seal the detection hole 01, but also allows for flexible adjustment of the state of the bag 20 during detection, thereby improving the adaptability and operational efficiency of the device.

[0066] like Figure 2As shown, the flow regulating assembly also includes a first control valve 83, which is located between the pressure monitoring gauge 82 and the bag control valve group. The first control valve 83, the circulation pipeline 70 and the second control valve 84 are connected through the first three-way valve 86, and the first control valve 83 is connected to the water inlet section 11.

[0067] According to another embodiment of the present application, a detection method for a water-conducting fracture zone detection device is provided. The detection method is applied to the water-conducting fracture zone detection device provided in the above embodiment, and the detection method includes the following steps:

[0068] Step 1: Drill a detection hole 01 in the top plate of the tunnel;

[0069] Step 2: Place the water pipe 10, bag 20 and temperature-sensing optical fiber 40 of the water-conducting fracture zone detection device into the detection hole 01;

[0070] Step 3: inject water into the bag 20 to block the detection hole 01;

[0071] Step 4: Fill water into the water pipe 10 and obtain test data at different temperature measurement points of the test section of the temperature-sensing optical fiber 40;

[0072] Step 5: Confirm the height range of the water-conducting fracture zone based on the test data.

[0073] The detection method of the water-conducting fracture zone detection device provided by the present invention simplifies the detection operation of the water-conducting fracture zone height through the cooperation of the bag 20 and the temperature-sensitive optical fiber 40, improves the accuracy of temperature measurement point detection, increases detection efficiency, further reduces costs, and accelerates the detection process, providing a strong guarantee for the smooth progress of coal mining. At the same time, it can significantly shorten the time of water-conducting fracture zone detection. In coal mining, this method can quickly determine the location and range of the water-conducting fracture zone and can more accurately reflect the development of rock strata fissures, providing a scientific basis for roof management and water disaster prevention and control, thereby improving the safety level of coal mine production.

[0074] There is no limitation on the length of the detection hole 01 , as long as it can reach the water-conducting fracture zone.

[0075] In this embodiment, the height of the water-conducting fracture zone 02 can be theoretically calculated according to the "Design Code for Water Prevention and Control in Coal Mines (GB51070-2014)", and 16m or 0.2 times the height of the water-conducting fracture zone 02 can be added as a safety distance. This can ensure that the height of the bottom of the detection hole 01 is higher than the height of the water-conducting fracture zone 02, thereby improving the detection efficiency.

[0076] Step 2 specifically includes: pushing the water-conducting fracture zone detection device to the theoretically calculated height of the water-conducting fracture zone 02, so as to facilitate the advancement or retreat of the water-conducting fracture zone detection device in the detection hole 01.

[0077] Step three specifically includes: injecting water into the bag 20 for a preset time, observing the monitoring data of the flow monitoring meter 81 and the pressure monitoring meter 82, and controlling the amount of water injected into the bag 20 according to the monitoring data. When the monitoring data reaches the preset value, the bag 20 isolates the detection hole 01 and closes the second control valve 84 at this time.

[0078] In this way, by monitoring the flow rate and pressure changes, the expansion degree of the pouch 20 can be accurately controlled, the tightness of the closure of the detection hole can be ensured, the detection hole can be effectively closed, and the accuracy of the detection is improved.

[0079] In this embodiment, the preset value of the flow monitoring meter 81 is 0 m / s, and the preset value of the pressure monitoring meter 82 is 5 MPa, which indicates that the bladder 20 has been fully inflated.

[0080] In other embodiments, adjustments can be made according to actual working conditions.

[0081] The test section has a top and bottom that are relatively set. Step five specifically includes obtaining detection data from the top. If the data from the top is within a preset range, the test section is within the water-conducting fracture zone. If the data from the top is not within the preset range, the test section is not within the water-conducting fracture zone. This simple and effective determination method can quickly determine the location of the fracture zone, improving the efficiency of geological exploration. It is also simple and easy to implement, requiring no complex calculations and analysis, and reducing operational difficulty.

[0082] In this embodiment, the top end is the connection between the water outlet section 12 and the guide wheel 60 , and the bottom end is the connection between the water outlet section 12 and the water inlet section 11 .

[0083] Preferably, the water supply pressure, water supply flow and water filling time can be recorded during the water filling process, and the changes in the detection data on the host 50 can be observed for comparison during subsequent repeated detections, which can further increase the accuracy of the detection.

[0084] If the change value of the data at the top is within a preset range, the test section is within the water-conducting fracture zone, and the detection method also includes: depressurizing the bag 20, pushing the water pipe 10, the bag 20 and the temperature-sensitive optical fiber 40 into the detection hole 01 by a preset length, and repeating steps three to five above until the detection data at the top changes.

[0085] If the change value of the data at the top is not within the preset range, the test section is not within the water-conducting fracture zone. The detection method also includes: depressurizing the bag 20, retracting the water pipe 10, the bag 20 and the temperature-sensing optical fiber 40 from the detection hole 01 by a preset length, and repeating the above steps three to five until the change value of the data at the top is within the preset range.

[0086] In this embodiment, the preset range of the data change value is not specifically limited and can be selected according to actual working conditions. The preset length is calculated using the dichotomy method, which not only accurately determines the boundary of the water-conducting fracture zone, but also significantly improves the detection efficiency.

[0087] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0088] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0089] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0090] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0091] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water-conducting fracture zone detection device, which is used to detect the depth of a water-conducting fracture zone (02) above a roadway roof, and is characterized in that: The water-conducting fracture zone detection device comprises: A water pipe (10) has a water inlet section (11) and a water outlet section (12) arranged in sequence, wherein the water inlet section (11) is connected to a water source, and the water outlet section (12) is used to inject water into a detection hole (01) in a rock formation; a bag (20) sleeved on the outer periphery of the water pipe (10) and located at one end of the water inlet section (11) close to the water outlet section (12); the radial dimension of the bag (20) is variable, so that the bag (20) can fit with the inner wall of the detection hole (01) to block the detection hole (01); an adjusting tube (30) connected to the sac (20), the adjusting tube (30) being used to inject a medium into the sac (20) to change the radial dimension of the sac (20); a temperature-sensing optical fiber (40), the temperature-sensing optical fiber (40) having a test section, the test section being provided with a plurality of temperature-measuring points at intervals along the length direction of the temperature-sensing optical fiber (40), the test section and the water outlet section (12) being both located on the same side of the bag (20), and the temperature-sensing optical fiber (40) being capable of detecting the temperature in the detection hole (01); A host (50) is electrically connected to the temperature-sensing optical fiber (40), and the host (50) is capable of receiving detection data from a plurality of temperature measurement points and calculating the height of the water-conducting fracture zone (02) based on the detection data.

2. The water-conducting fracture zone detection device according to claim 1, characterized in that: A plurality of water outlet holes are provided on the side wall of the water outlet section (12), and the plurality of water outlet holes are arranged at intervals along the extension direction of the water outlet section (12). The test section is arranged in the water outlet section (12), and the extension direction of the test section is the same as that of the water outlet section (12).

3. The water-conducting fracture zone detection device according to claim 2, characterized in that: The water inlet section (11) is provided with a perforation (111), the perforation (111) is located on a side of the bag (20) away from the water outlet section (12), the temperature-sensing optical fiber (40) is passed through the perforation (111), and the test section is passed through the perforation (111) in the water outlet section (12).

4. The water-conducting fracture zone detection device according to claim 3, characterized in that: The water-conducting fissure zone detection device further comprises a guide wheel (60), which is arranged at the end of the water outlet section (12) away from the water inlet section (11), and the guide wheel (60) is capable of guiding the moving direction of the water pipe (10) in the detection hole (01).

5. The water-conducting fracture zone detection device according to claim 4, characterized in that: The water-conducting fracture zone detection device further comprises a circulation pipeline (70) and a pump body (71); the circulation pipeline (70) and the pump body (71) are both located outside the detection hole (01); the water inlet section (11) and the regulating pipe (30) are both connected to the circulation pipeline (70); one end of the circulation pipeline (70) is connected to the pump body (71); and the pump body (71) is used to communicate with a water source so as to pump water in the water source into the circulation pipeline (70).

6. The water-conducting fracture zone detection device according to claim 5, characterized in that: The water-conducting fracture zone detection device further comprises a flow regulating component, which is arranged on the circulation pipeline (70) and is used to regulate the flow of the fluid in the circulation pipeline (70).

7. The water-conducting fracture zone detection device according to claim 6, characterized in that: The flow regulating assembly comprises a flow monitoring meter (81) and a pressure monitoring meter (82). The flow monitoring meter (81) and the pressure monitoring meter (82) are sequentially arranged on the circulation pipeline (70) and located upstream of the water pipe (10). The flow monitoring meter (81) can monitor the flow value in the circulation pipeline (70), and the pressure monitoring meter (82) can monitor the pressure value in the circulation pipeline (70).

8. The water-conducting fracture zone detection device according to claim 7, characterized in that: The flow regulating assembly further comprises a bladder control valve group, which is arranged on the circulation pipeline (70) and is located downstream of the pressure monitoring meter (82). The bladder control valve group is connected to the regulating tube (30). The bladder control valve group can adjust the radial size of the bladder (20) according to the detection data of the flow monitoring meter (81) and the pressure monitoring meter (82).

9. The water-conducting fracture zone detection device according to claim 8, characterized in that: The bag control valve group includes a second control valve (84) and a pressure relief valve (85). The second control valve (84) is arranged on the circulation pipeline (70). The regulating pipe (30), the pressure relief valve (85) and the second control valve (84) are connected through a second three-way valve (87).

10. The water-conducting fracture zone detection device according to claim 9, characterized in that: The flow regulating assembly further comprises a first control valve (83), the first control valve (83) being located between the pressure monitoring gauge (82) and the bag control valve group, the first control valve (83), the circulation pipeline (70) and the second control valve (84) being connected via a first three-way valve (86), and the first control valve (83) being connected to the water inlet section (11).

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