A roadway fracturing borehole stress monitoring system

Abstract

This invention proposes a stress monitoring system for roadway fracturing boreholes. The system includes a housing assembly, a monitoring element, and a cleaning assembly. The housing assembly includes a protective housing with a mounting cavity. The monitoring element is connected to the protective housing, and at least a portion of the monitoring element is placed within the mounting cavity. The monitoring element is used to detect stress changes in the roadway fracturing borehole. The cleaning assembly includes a first roll film section, a second roll film section, and a protective film. Both the first and second roll film sections are connected to the protective housing and placed within the mounting cavity. A first end of the protective film is connected to the first roll film section, and a second end of the protective film is connected to the second roll film section. A portion of the protective film is laid on the monitoring element. The first roll film section is used to roll in the protective film, and the second roll film section is used to deliver the protective film for replacing the portion of the protective film laid on the monitoring element. This roadway fracturing borehole stress monitoring system has the advantages of convenient cleaning and high monitoring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of tunnel fracturing technology, specifically to a tunnel fracturing borehole stress monitoring system. Background Technology

[0002] Stress monitoring in fracturing boreholes in tunnels is typically achieved by installing stress sensors inside the borehole. These sensors measure stress changes in the surrounding rock, helping engineers understand the stress state during fracturing. The underground environment in coal mines is usually high in humidity and dust, which can cause dust to accumulate on the sensor surface, affecting its sensitivity and even causing sensor failure. To ensure the accuracy and reliability of monitoring data, the sensor surface needs to be cleaned regularly to remove dust and dirt.

[0003] In related technologies, sensor cleaning relies on manual labor, which is not only time-consuming and labor-intensive but also makes it difficult to ensure thorough cleaning. Some systems use compressed air to clean the sensors, but this method may damage the sensors and is not effective in humid environments. Summary of the Invention

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a roadway fracturing borehole stress monitoring system, which has the advantages of easy cleaning and high monitoring accuracy.

[0006] The roadway fracturing borehole stress monitoring system according to an embodiment of the present invention includes:

[0007] A housing assembly, the housing assembly including a protective housing having a mounting cavity;

[0008] A monitoring element, which is connected to the protective housing, with at least a portion of the monitoring element placed within the mounting cavity, is used to detect stress changes in roadway fracturing boreholes;

[0009] A cleaning assembly includes a first roll film, a second roll film, and a protective film. Both the first roll film and the second roll film are connected to the protective housing and placed within the mounting cavity. A first end of the protective film is connected to the first roll film, and a second end of the protective film is connected to the second roll film. A portion of the protective film is laid on the monitoring component. The first roll film is used to roll in the protective film, and the second roll film is used to deliver the protective film for replacing the portion of the protective film laid on the monitoring component.

[0010] The roadway fracturing borehole stress monitoring system of this utility model, due to the protective film, keeps the surface of the monitoring element clean, reducing the impact of dust and dirt on the monitoring results and improving monitoring accuracy. The cleaning component can also automatically replace the protective film, which not only improves cleaning efficiency but also reduces manual operation and lowers the possibility of damage to the monitoring element during the cleaning process.

[0011] In some embodiments, the housing assembly further includes a protrusion that is smoothly connected to the protective housing, the protrusion extending toward the wall of the fracturing borehole and having an opening on the side of the protrusion adjacent to the wall of the fracturing borehole, a portion of the monitoring element being disposed within the protrusion, and a portion of the protective film being used to cover the opening of the protrusion.

[0012] In some embodiments, the protrusion is integrally formed with the protective housing.

[0013] In some embodiments, the sidewall of the protective housing has a first guide hole and a second guide hole on the extension path of the protective film. In the length direction of the housing body, the protrusion is located between the first guide hole and the second guide hole. The first roll film portion is arranged adjacent to the first guide hole, and the second roll film portion is arranged adjacent to the second guide hole. The first end of the protective film passes through the second guide hole and the first guide hole in sequence and is connected to the first roll film portion.

[0014] In some embodiments, the cleaning assembly further includes a first cleaning part disposed within a first guide hole, and the first cleaning part is in contact with the surface of the protective film.

[0015] In some embodiments, the cleaning assembly further includes a second cleaning section connected to the protrusion and located on the side of the protrusion adjacent to the second guide hole, the protective film passing through the second cleaning section, and the second cleaning section contacting the surface of the protective film.

[0016] In some embodiments, the protrusion has an extended edge located on the side of the protrusion away from the housing body, and the extended edge is arranged opposite to the protective film in the width direction, with a gap between the extended edge and the protrusion, and the protective film is arranged to pass through the gap between the extended edge and the protrusion.

[0017] In some embodiments, the cleaning assembly further includes a tensioning portion connected to the protective housing and placed within the mounting cavity, a portion of the tensioning portion contacting the protective film, and the angle between the line connecting the tensioning portion and the first guide hole and the line connecting the tensioning portion and the first roll film portion being greater than 90 degrees and less than 180 degrees.

[0018] In some embodiments, the tensioning part includes a tensioning base and a tensioning moving member. The tensioning base is connected to the housing body, and the tensioning moving member is connected to the tensioning base. The tensioning moving member is movable along the extending direction of the tensioning base, and the extending direction of the tensioning base is orthogonal to the extending direction of the line connecting the first guide hole and the first film winding part.

[0019] In some embodiments, the cleaning assembly further includes a warning element connected to the tensioning portion. The warning element is used to detect the pressure between the tensioning portion and the protective film. If the pressure value detected by the warning element is less than a preset pressure value, the warning element issues a warning signal. Attached Figure Description

[0020] Figure 1 This is a schematic diagram (front view) of the internal structure of the roadway fracturing borehole stress monitoring system according to an embodiment of this utility model.

[0021] Figure 2 This is a side view of the roadway fracturing borehole stress monitoring system according to an embodiment of this utility model.

[0022] Figure label:

[0023] 1. Housing assembly; 11. Protective housing; 111. Mounting cavity; 12. Protrusion; 121. Extended edge; 13. First guide hole; 14. Second guide hole.

[0024] 2. Monitoring components,

[0025] 3. Cleaning components; 31. First roll film section; 32. Second roll film section; 33. Protective film; 34. First cleaning section; 35. Second cleaning section; 36. Tensioning section; 361. Tensioning base; 362. Tensioning moving part. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figure 1 and Figure 2 As shown, the roadway fracturing borehole stress monitoring system of this utility model embodiment includes: a housing assembly 1, a monitoring component 2, and a cleaning assembly 3.

[0028] The housing assembly 1 includes a protective housing 11 having a mounting cavity 111. A monitoring element 2 is connected to the protective housing 11, with at least a portion of the monitoring element 2 placed within the mounting cavity 111. The monitoring element 2 is used to detect stress changes in roadway fracturing boreholes. The cleaning assembly 3 includes a first roll film portion 31, a second roll film portion 32, and a protective film 33. Both the first roll film portion 31 and the second roll film portion 32 are connected to the protective housing 11 and placed within the mounting cavity 111. A first end of the protective film 33 is connected to the first roll film portion 31, and a second end of the protective film 33 is connected to the second roll film portion 32. A portion of the protective film 33 is laid on the monitoring element 2. The first roll film portion 31 is used to roll in the protective film 33, and the second roll film portion 32 is used to deliver the protective film 33 for replacing the portion of the protective film 33 laid on the monitoring element.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, the space enclosed by the walls of the protective housing 11 is the mounting cavity 111, which provides a stable and safe mounting space for the components within it. The monitoring component 2 is fixedly connected to the protective housing 11 using screws or bolts. Most of the monitoring component 2 is housed within the mounting cavity 111 to avoid external environmental influences and extend its service life. The portion of the monitoring component 2 used to detect stress changes during drilling can be placed outside the protective housing 11 or have an opening in it to ensure monitoring accuracy.

[0030] It is understandable that since some components of the monitoring device 2 need to be in contact with the external environment to ensure the monitoring effect, the use of a protective film 33 (such as a light-transmitting protective film 33) that matches the monitoring device 2 can prevent some of the precision components on the monitoring device 2 from being directly contaminated by external dust, etc. Thus, the protective film 33 can be used to protect the components of the monitoring device 2.

[0031] Both the first roll of film 31 and the second roll of film 32 are electrically driven roller structures, with the two ends of the protective film 33 connected to the first roll of film 31 and the second roll of film 32, respectively. That is, when the first roll of film 31 winds in the protective film 33, the second roll of film 32 correspondingly needs to deliver the protective film 33. Therefore, the protective film 33 laid on the monitoring element 2 is gradually replaced by subsequent new protective films 33, thereby ensuring that the elements used for detection on the monitoring element 2 always remain clean, improving monitoring accuracy and effectiveness.

[0032] In other words, the roadway fracturing borehole stress monitoring system of this embodiment keeps the surface of the monitoring element 2 clean due to the protective effect of the protective film 33, reducing the impact of dust and dirt on the monitoring results and improving monitoring accuracy. The cleaning component 3 can also automatically replace the protective film 33, which not only improves cleaning efficiency but also reduces manual operation and lowers the possibility of damage to the monitoring element 2 during the cleaning process.

[0033] In some embodiments, the housing assembly 1 further includes a protrusion 12 that is smoothly connected to the protective housing 11. The protrusion 12 extends toward the wall of the roadway fracturing borehole and has an opening on the side of the protrusion 12 adjacent to the wall of the roadway fracturing borehole. A portion of the monitoring element 2 is placed inside the protrusion 12, and a portion of the protective film 33 is used to cover the opening of the protrusion 12.

[0034] Specifically, such as Figure 1 and Figure 2 As shown, the protrusion 12 is located on the upper part of the protective housing 11. The upper end of the protrusion 12 has an opening, and the protrusion 12 extends upward so as to provide circumferential protection for the monitoring element 2.

[0035] Understandably, the protrusion 12 is smoothly connected to the protective housing 11, ensuring the structural integrity and sealing of the entire housing assembly 1. The additional protective layer of the protrusion 12 enhances the protection of the monitoring element 2, reduces the impact of dust and dirt on the monitoring results, and improves the accuracy and reliability of the monitoring. Furthermore, the opening of the protrusion 12 is covered by the protective film 33, forming a closed environment that further reduces the ingress of dust and dirt and enhances the system's sealing performance.

[0036] Preferably, the protrusion 12 is integrally formed with the protective shell 11. It is understood that the integrally formed design makes the protrusion 12 and the protective shell 11 form a whole, which enhances the strength and rigidity of the structure and can better resist external pressure and impact.

[0037] In some embodiments, the sidewall of the protective housing 11 has a first guide hole 13 and a second guide hole 14 on the extension path of the protective film 33. In the length direction of the housing body, the protrusion 12 is located between the first guide hole 13 and the second guide hole 14. The first roll film portion 31 is arranged adjacent to the first guide hole 13, and the second roll film portion 32 is arranged adjacent to the second guide hole 14. The first end of the protective film 33 passes through the second guide hole 14 and the first guide hole 13 in sequence and is connected to the first roll film portion 31.

[0038] Specifically, such as Figure 1 and Figure 2 As shown, the first guide hole 13, the protrusion 12 and the second guide hole 14 are arranged sequentially from left to right. The first guide hole 13 and the second guide hole 14 both penetrate the upper sidewall of the protective housing 11 so that the protective film 33 can pass through the first guide hole 13 and the second guide hole 14.

[0039] Understandably, the second end of the protective film 33 is connected to the second roll film section 32. The first end of the protective film 33 is passed sequentially through the second guide hole 14, covering the opening of the protrusion 12, and then passed through the first guide hole 13 to connect with the first roll film section 31. Thus, after the first roll film section 31 is activated, the protective film 33 can move in a counterclockwise direction, thereby realizing the replacement of the protective film 33 laid on the monitoring component 2.

[0040] In other words, the design of the guide hole allows for precise control of the movement path of the protective film 33, ensuring the consistency and reliability of the replacement and protection process. The arrangement of the first roll of film 31 and the second roll of film 32 makes the replacement of the protective film 33 easier and improves the maintenance efficiency of the system. The protective film 33 ensures that the monitoring component 2 remains clean in the harsh mine environment, improving the accuracy and reliability of the monitoring.

[0041] In some embodiments, the cleaning component 3 further includes a first cleaning part 34, which is disposed in the first guide hole 13 and is in contact with the surface of the protective film 33.

[0042] It is understandable that, such as Figure 1 and Figure 2 As shown, the first cleaning part 34 is located inside the first guide hole 13 and is in contact with the surface of the protective film 33. When the protective film 33 moves, the first cleaning part 34 can clean the surface of the protective film 33 and remove dust and dirt, thereby preventing the protective film 33 carrying dirt or dust from entering the protective housing 11.

[0043] In other words, before the protective film 33 enters the protective housing 11, the first cleaning part 34 can remove the dirt adhering to the protective film 33. This not only prevents the dirt from entering the protective housing 11, but also prevents the protective film 33 from being punctured by dirt when it is being wound into the first roll of film 31, thus preventing the winding of the protective film 33 from failing.

[0044] In some embodiments, the cleaning assembly 3 further includes a second cleaning portion 35, which is connected to the protrusion 12 and located on the side of the protrusion 12 adjacent to the second guide hole 14. A protective film 33 is used to pass through the second cleaning portion 35, and the second cleaning portion 35 contacts the surface of the protective film 33.

[0045] It is understandable that, such as Figure 1 and Figure 2As shown, the second cleaning part 35 is located on the right side of the protrusion 12. The protective film 33 passing through the second guide hole 14 needs to pass through the second cleaning part 35 first before being laid on the upper surface of the monitoring element 2. This is to prevent the protective film 33, which has been stationary for a long time above the second guide hole 14, from accumulating dirt due to the influence of the external environment, and to further ensure the monitoring effect and accuracy of the monitoring element 2.

[0046] It should be noted that the first cleaning part 34 and the second cleaning part 35 can be made of soft brushes or soft scrapers to avoid wear on the surface of the protective film 33 during cleaning.

[0047] In some embodiments, the protrusion 12 has an extension edge 121 located on the side of the protrusion 12 away from the housing body, and the extension edge 121 is arranged opposite to the protective film 33 in the width direction, and there is a gap between the extension edge 121 and the protrusion 12, and the protective film 33 is arranged to pass through the gap between the extension edge 121 and the protrusion 12.

[0048] It is understandable that, such as Figure 2 As shown, the extended edges 121 are arranged opposite each other on both sides of the protective film 33 to guide the protective film 33 to move correctly on the protrusion 12, ensuring that the protective film 33 can cover the protrusion 12 and maintain the correct position. Furthermore, the extended edges 121 can also reduce the gap between the protective film 33 and the opening of the protrusion 12, preventing external impurities from entering the interior of the protective housing 11 through this gap. Thus, the design of the extended edges 121 also provides a certain degree of sealing, reducing the possibility of dust and dirt entering the interior of the protective housing 11.

[0049] In some embodiments, the cleaning component 3 further includes a tensioning portion 36, which is connected to the protective housing 11 and placed in the mounting cavity 111. A portion of the tensioning portion 36 contacts the protective film 33. The angle between the line connecting the tensioning portion 36 and the first guide hole 13 and the line connecting the tensioning portion 36 and the first roll film portion 31 is greater than 90 degrees and less than 180 degrees.

[0050] It is understandable that, such as Figure 1 and Figure 2 As shown, the tensioning part 36 contacts the protective film 33. By applying appropriate tension, the protective film 33 is kept taut, preventing it from becoming loose or wrinkled during cleaning and replacement, which would affect the cleaning and replacement effect.

[0051] In other words, part of the tensioning part 36 contacts the protective film 33, and by applying tension, the protective film 33 is kept taut, which helps to maintain the stability of the protective film 33 and ensures effective coverage of the protective film 33 during cleaning and replacement.

[0052] In some embodiments, the tensioning part 36 includes a tensioning base 361 and a tensioning moving member 362. The tensioning base 361 is connected to the housing body, and the tensioning moving member 362 is connected to the tensioning base 361. The tensioning moving member 362 is movable along the extending direction of the tensioning base 361, and the extending direction of the tensioning base 361 is orthogonal to the extending direction of the line connecting the first guide hole 13 and the first film winding part 31.

[0053] Specifically, such as Figure 1 and Figure 2 As shown, the tensioning base 361 is connected to the housing body, providing support and fixation for the tensioning moving part 362, ensuring the stability of the tensioning part 36 in the cleaning assembly 3. The tensioning moving part 362 is connected to the tensioning base 361 and can move in the extending direction of the tensioning base 361 to adjust and protect the tension of the membrane 33.

[0054] It is understandable that the tensioning base 361 and the tensioning moving part 362 can adopt a screw adjustment mechanism, a cylinder drive mechanism, or a guide rail and slider mechanism, so that the tensioning moving part 362 can move on the tensioning base 361, thereby realizing the tensioning function of the protective film 33.

[0055] In some embodiments, the cleaning component 3 further includes a warning element (not shown in the figure), which is connected to the tensioning part 36. The warning element is used to detect the pressure between the tensioning part 36 and the protective film 33. If the pressure value detected by the warning element is less than a preset pressure value, the warning element issues a warning signal.

[0056] Understandably, the warning device monitors the pressure between the tensioning part 36 and the protective membrane 33 in real time to ensure that the tension of the protective membrane 33 meets the preset requirements. When the detected pressure value is lower than the preset pressure value, the warning device will issue a warning signal, prompting the operator to adjust the tension of the protective membrane 33.

[0057] In other words, the warning device enables automatic monitoring of the tension of the protective film 33, reducing the need for manual inspection and improving the automation level of the monitoring system. Through real-time monitoring and warning signals, it ensures that the protective film 33 is always maintained at an appropriate tension, improving the accuracy and reliability of the monitoring data. Furthermore, the warning signals emitted by the device help operators promptly identify tension problems with the protective film 33, enabling preventative maintenance and avoiding potential data errors or equipment damage.

[0058] It should be noted that the warning device includes a pressure sensor and a signal generator to measure and output pressure values. When the pressure value falls below a preset value, the signal generator will issue a warning signal, which can take the form of sound, light, or other signals.

[0059] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A roadway fracturing borehole stress monitoring system, characterized by, include: A housing assembly, the housing assembly including a protective housing having a mounting cavity; A monitoring element, which is connected to the protective housing, with at least a portion of the monitoring element placed within the mounting cavity, is used to detect stress changes in roadway fracturing boreholes; A cleaning assembly includes a first roll film, a second roll film, and a protective film. Both the first roll film and the second roll film are connected to the protective housing and placed within the mounting cavity. A first end of the protective film is connected to the first roll film, and a second end of the protective film is connected to the second roll film. A portion of the protective film is laid on the monitoring component. The first roll film is used to roll in the protective film, and the second roll film is used to deliver the protective film for replacing the portion of the protective film laid on the monitoring component.

2. The fracture bore stress monitoring system of claim 1, wherein, The housing assembly further includes a protrusion that is smoothly connected to the protective housing. The protrusion extends toward the wall of the roadway fracturing borehole and has an opening on the side of the protrusion adjacent to the wall of the roadway fracturing borehole. A portion of the monitoring element is placed inside the protrusion, and a portion of the protective film is used to cover the opening of the protrusion.

3. The fracture bore stress monitoring system of claim 2, wherein, The protrusion is integrally formed with the protective shell.

4. The fracture bore stress monitoring system of claim 3, wherein, The sidewall of the protective housing has a first guide hole and a second guide hole on the extension path of the protective film. In the length direction of the housing body, the protrusion is located between the first guide hole and the second guide hole. The first roll film portion is arranged adjacent to the first guide hole, and the second roll film portion is arranged adjacent to the second guide hole. The first end of the protective film passes through the second guide hole and the first guide hole in sequence and is connected to the first roll film portion.

5. The fracture bore stress monitoring system of claim 4, wherein, The cleaning assembly further includes a first cleaning part, which is disposed in a first guide hole and is in contact with the surface of the protective film.

6. The fracture bore stress monitoring system of claim 5, wherein, The cleaning assembly further includes a second cleaning section, which is connected to the protrusion and located on the side of the protrusion adjacent to the second guide hole. The protective film is used to pass through the second cleaning section, and the second cleaning section is in contact with the surface of the protective film.

7. The fracture stress monitoring system of claim 6, wherein, The protrusion has an extended edge located on the side of the protrusion away from the housing body, and the extended edge is arranged opposite to the protective film in the width direction. There is a gap between the extended edge and the protrusion, and the protective film is arranged to pass through the gap between the extended edge and the protrusion.

8. The fracture stress monitoring system of claim 7, wherein, The cleaning assembly further includes a tensioning part, which is connected to the protective housing and placed in the mounting cavity. A portion of the tensioning part contacts the protective film. The angle between the line connecting the tensioning part and the first guide hole and the line connecting the tensioning part and the first roll film part is greater than 90 degrees and less than 180 degrees.

9. The fracture stress monitoring system of claim 8, wherein, The tensioning part includes a tensioning base and a tensioning moving member. The tensioning base is connected to the housing body, and the tensioning moving member is connected to the tensioning base. The tensioning moving member is movable along the extension direction of the tensioning base, and the extension direction of the tensioning base is orthogonal to the extension direction of the line connecting the first guide hole and the first film winding part.

10. The fracture bore stress monitoring system of claim 9, wherein, The cleaning assembly also includes a warning element connected to the tensioning part. The warning element is used to detect the pressure between the tensioning part and the protective film. If the pressure value detected by the warning element is less than a preset pressure value, the warning element issues a warning signal.

Images