Ground surface deformation optical fiber detection equipment for natural gas pipeline construction

Abstract

The invention relates to the technical field of ground surface deformation optical fiber detection, in particular to ground surface deformation optical fiber detection equipment for natural gas pipeline construction, which comprises a mounting frame and a composite modulation-demodulation instrument mounted in a groove above the mounting frame, and a distributed optical fiber deformation sensing port on the front side of the composite modulation-demodulation instrument is connected with a test optical fiber. The interior of the mounting frame is connected with a mounting bottom plate through a regulation and control assembly, a second fixing cone is fixed to the bottom surface of the mounting bottom plate, the outer side of the test optical fiber is connected with the earth surface to be detected through a connecting assembly, and the upper portion of the connecting assembly is connected with a first supporting plate through a pushing assembly. According to the ground surface deformation optical fiber detection equipment for natural gas pipeline construction, the whole ground surface deformation optical fiber detection equipment can be conveniently and rapidly installed and placed, the testing optical fiber can be tightly attached and contacted with the surface of the ground surface, the installation stability is improved, and therefore the accuracy of the testing optical fiber on ground surface deformation detection can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber detection of surface deformation, and in particular to an optical fiber detection device for surface deformation used in natural gas pipeline construction. Background Art

[0002] Since excavation operations can disrupt the original stratum stress balance, it is necessary to monitor surface deformation in real time during natural gas pipeline construction to avoid affecting the safety of subsequent natural gas pipeline construction. Currently, there are surface deformation detection devices based on optical fiber technology on the market to detect surface deformation, thereby facilitating the monitoring of whether the excavation process will cause surrounding surface subsidence. For example, the patent application with the publication number "CN116124025A" in the prior art is entitled "Deformation Monitoring System and Method Based on Distributed Optical Fiber or Arrayed Grating Optical Fiber". It discloses that the head end of the distributed deformation sensing optical fiber or arrayed deformation sensing grating optical fiber of the deformation measurement or monitoring armored optical cable is connected to the deformation sensing optical fiber signal input end of the composite modulation and demodulation instrument, the head ends of the two multimode optical fibers of the deformation measurement or monitoring armored optical cable are connected to the temperature sensing double-ended optical fiber signal input end of the composite modulation and demodulation instrument, the composite modulation and demodulation instrument is started, and the deformation signal continuously measured or monitored by the deformation measurement or monitoring armored optical cable arranged underground or on the seabed or on the outer surface of a large infrastructure or on the outer surface of a pipeline is subjected to real-time deformation. Modulation and demodulation, and at the same time, the real-time temperature change signals along the two multimode optical fibers are also modulated and demodulated. For example, the patent application with the publication number "CN106338253A" in the prior art is named "A distributed optical fiber detection device and detection method for underwater collapse on the dam surface", which discloses that first according to the need to detect the size of the underwater collapse on the dam surface, a fiber optic two-dimensional sensing unit of appropriate length and width is selected, and then the stainless steel counterweight and roller of the two-dimensional sensing unit are lowered from the dam surface to allow the fiber optic two-dimensional sensing unit to be spread and completely cover the surface to be detected, and the fiber optic two-dimensional sensing unit is connected to the PPP-BOTDA and analysis and display system to monitor the strain of the two-dimensional sensing unit optical fiber arranged on the dam surface.

[0003] When the above-mentioned surface deformation fiber optic detection equipment in the prior art is in use, the stainless steel counterweight and roller of the two-dimensional sensing unit are lowered from the surface of the dam, so that the fiber optic two-dimensional sensing unit can be spread and completely cover the surface to be detected. In this way, the fiber optic two-dimensional sensing unit is only spread and in contact with the surface to be detected. When encountering strong winds, the tightness of the fit between the fiber optic two-dimensional sensing unit and the surface to be detected will be affected, thereby affecting the accuracy of the subsequent surface deformation detection. Therefore, we propose a surface deformation fiber optic detection equipment for natural gas pipeline construction to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a surface deformation optical fiber detection device for natural gas pipeline construction, so as to solve the problem raised in the above background technology that when the surface deformation optical fiber detection device currently on the market is used, the stainless steel counterweight and roller of the two-dimensional sensing unit are lowered from the surface of the dam, so that the optical fiber two-dimensional sensing unit can be spread and completely covered on the surface to be detected. In this way, the optical fiber two-dimensional sensing unit is only spread and in contact with the surface to be detected. When encountering strong winds, the tightness of the optical fiber two-dimensional sensing unit and the surface to be detected will be affected, thereby affecting the accuracy of the subsequent surface deformation detection.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a surface deformation optical fiber detection device for natural gas pipeline construction, comprising a mounting frame, and a composite modulator and demodulator instrument installed in a groove above the mounting frame, and a distributed optical fiber deformation sensing port on the front side of the composite modulator and demodulator is connected to a test optical fiber, the interior of the mounting frame is connected to a mounting base plate through a regulating assembly, and a second fixed cone is fixed to the bottom surface of the mounting base plate, the rear end of the test optical fiber passes through the front side surface of the mounting frame, and a row of first support plates and second support plates are installed on the front side surface of the mounting frame, and the outer side of the test optical fiber is connected to the surface to be detected through a connecting assembly, and the top of the connecting assembly is connected to the first support plate through a pushing assembly, and the right side of the second support plate is connected to a laser rangefinder.

[0006] Preferably, sliders are fixed on both sides of the mounting base, limiting guide rods are installed in the grooves opened on the left and right sides of the mounting frame, and limiting guide rods are set through the interior of the sliders, and a row of rack assemblies are fixed on the upper surface of the mounting base.

[0007] Preferably, the connection assembly includes a fixing block fixed on the outer side above the test optical fiber, and the fixing block is arranged in an arc shape, and a first fixing cone for inserting into the surface to be tested is symmetrically installed on the bottom surface of the fixing block.

[0008] Preferably, a rotating rod is installed in a groove on the bottom surface of the first support plate, and the pushing assembly includes a pushing block installed on the outside of the rotating rod, and an inverted "L"-shaped connecting frame is fixed above the fixed block, and the four corners above the connecting frame are connected to the bottom surface of the first support plate through a manual telescopic rod, and a pushing block is provided above the connecting frame, and the connecting frame forms a lifting structure through the pushing block, and the rear end of the rotating rod passes through the rear side surface of the first support plate and the front side surface of the mounting frame, and a transmission gear is installed at the rear end of the rotating rod, and the transmission gear is meshed with the rack assembly on the left.

[0009] Preferably, a single-rotation reciprocating screw is installed in the groove opened on the right side of the second support plate, and the outer side of the single-rotation reciprocating screw is threadedly connected to a mounting seat, a laser rangefinder is fixed to the outer side of the mounting seat, and the rear end of the single-rotation reciprocating screw passes through the rear side of the second support plate and is inserted into the mounting frame, the rear end of the leftmost single-rotation reciprocating screw passes through the rear side of the mounting frame, and a transmission structure is formed between the four single-rotation reciprocating screws located in the mounting frame through a sprocket assembly.

[0010] Preferably, the regulating assembly includes an electric push rod installed in the middle of the installation frame, and the output end below the electric push rod is connected to the installation base plate.

[0011] Preferably, a second support plate is installed on the right side of the first support plate, and the first support plate and the second support plate are arranged in a one-to-one correspondence.

[0012] Preferably, the regulating assembly includes a return spring installed above the slider, and the return spring is sleeved on the outside of the limiting guide rod.

[0013] Preferably, a control frame is provided on the rear side of the mounting frame, and the left and right ends of the control frame are respectively inserted into the grooves opened on the left and right sides of the mounting frame, and the left and right ends of the control frame are respectively connected to two sliders, and a "U"-shaped through groove is opened in the middle of the "U"-shaped control frame, and the slider forms a lifting structure through a reset spring.

[0014] Preferably, a self-control rod is installed on the rear side of the installation frame, and a support block is fixed below the self-control rod, and the width of the support block is smaller than the diameter of the self-control rod, and the diameter of the self-control rod is smaller than the width of the through slot.

[0015] Compared with the prior art, the present invention has the following advantages: the surface deformation optical fiber detection device for natural gas pipeline construction not only facilitates the rapid installation and placement of the entire surface deformation optical fiber detection device, but also allows the test optical fiber to be closely attached to the surface of the ground, improving the stability of the installation, thereby improving the accuracy of the test optical fiber in detecting surface deformation. The specific contents are as follows: (1) The mounting base is driven down by the regulating assembly so that the second fixed cone is inserted into the ground surface. At the same time, the mounting base drives the rack assembly down, and then the rack assembly drives the rotating rod and the transmission gear to rotate, so that the rotating rod drives the push block to rotate from a horizontal state to a vertical state, and the push block automatically pushes the connecting frame and the fixed block downward, so that the first fixed cone on the bottom surface of the fixed block is inserted into the ground surface. The above-mentioned structure is set up, not only is it convenient to quickly install and place the entire surface deformation optical fiber detection equipment, but the test optical fiber can also be closely fitted with the surface of the ground, thereby improving the stability of the installation, thereby improving the accuracy of the test optical fiber in detecting surface deformation; Furthermore, an external motor drives the single-rotation reciprocating screw to rotate, so that the single-rotation reciprocating screw drives the mounting base and the laser rangefinder to move back and forth, thereby enabling the laser rangefinder to assist in detecting surface deformation, thereby further improving the detection accuracy of the entire detection equipment; (2) The control component is an electric push rod, which can automatically drive the installation base plate to descend and ascend, making it easy to quickly install and disassemble the entire testing equipment and easy to operate; (3) The regulating component is a reset spring. The accumulated force of the reset spring can automatically drive the mounting base to descend. No power source is required, which can save energy and meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention as a whole installed on the ground; Figure 2 This is a rear view structural diagram of the present invention; Figure 3 This is a bottom view of the mounting frame of the present invention; Figure 4 This is a schematic diagram of a top cross-sectional structure of the mounting frame of the present invention; Figure 5 For the present invention Figure 4 A in the middle is an enlarged structural diagram; Figure 6 This is a bottom view of the second support plate structure of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 8 This is a schematic cross-sectional structural diagram of the first support plate of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the installation frame in the second embodiment of the present invention; Figure 10 This is a schematic diagram of the rear view structure of the installation frame in the second embodiment of the present invention; Figure 11 This is a schematic diagram of the cross-sectional structure of the installation frame in the second embodiment of the present invention; Figure 12 It is a schematic diagram of the three-dimensional structure of the control frame of the present invention.

[0017] In the figure: 1. Mounting frame; 2. Composite modem instrument; 3. Test optical fiber; 4. First support plate; 5. Second support plate; 6. Laser rangefinder; 61. Mounting seat; 7. Fixed block; 71. First fixed cone; 8. Single-rotation reciprocating screw; 9. Mounting base; 91. Second fixed cone; 10. Electric push rod; 11. Sprocket assembly; 12. Slider; 13. Limit guide rod; 131. Return spring; 14. Rotating rod; 141. Transmission gear; 142. Pushing block; 15. Rack assembly; 16. Connecting frame; 161. Manual telescopic rod; 17. Control frame; 171. Through slot; 18. Automatic control rod; 181. Support block. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0019] See also Figures 1-12 , the present invention provides the following technical solutions: Example 1: The surface deformation optical fiber detection device for natural gas pipeline construction in this embodiment is not only convenient for quick installation and disassembly of the entire detection device, but also improves the stability of the installation of the entire detection device, and facilitates the close contact between the test optical fiber 3 and the surface of the ground, thereby improving the accuracy of the later detection. For the specific structure, refer to the attached Figures 1-8As shown, it includes a mounting frame 1, and a composite modem instrument 2 installed in a groove above the mounting frame 1, and the distributed optical fiber deformation sensing port on the front side of the composite modem instrument 2 is connected to the test optical fiber 3, the interior of the mounting frame 1 is connected to the mounting base plate 9 through a regulating component, and the bottom surface of the mounting base plate 9 is fixed with a second fixed cone 91, the rear end of the test optical fiber 3 passes through the front side of the mounting frame 1, and the front side of the mounting frame 1 is installed with a row of first support plates 4 and second support plates 5, and the outer side of the test optical fiber 3 is connected to the surface to be detected through a connecting component, and the top of the connecting component is connected to the first support plate 4 through a pushing component, and the second support The right side of the plate 5 is connected to a laser rangefinder 6, and sliders 12 are fixed on both sides of the mounting base 9. Limit guide rods 13 are installed in the grooves opened on the left and right sides of the mounting frame 1, and the limit guide rods 13 are set through the interior of the slider 12, and a row of rack assemblies 15 are fixed on the upper surface of the mounting base 9. The connecting assembly includes a fixed block 7 fixed to the outside above the test optical fiber 3, and the fixed block 7 is arranged in an arc shape, and the bottom surface of the fixed block 7 is symmetrically installed with a first fixed cone 71 for inserting into the surface to be tested. The bottom surface of the first support plate 4 is grooved with a rotating rod 14, and the pushing assembly includes a pushing block 14 installed on the outside of the rotating rod 14 2. An inverted "L"-shaped connecting frame 16 is fixed above the fixed block 7, and the four corners above the connecting frame 16 are connected to the bottom surface of the first support plate 4 through a manual telescopic rod 161, and a pushing block 142 is provided above the connecting frame 16. The connecting frame 16 forms a lifting structure through the pushing block 142. The rear end of the rotating rod 14 passes through the rear side of the first support plate 4 and the front side of the mounting frame 1, and the rear end of the rotating rod 14 is installed with a transmission gear 141, and the transmission gear 141 is meshed with the rack assembly 15 on the left. A single-rotation reciprocating screw rod 8 is installed in the groove opened on the right side of the second support plate 5, and the single-rotation reciprocating screw rod 8 The outer side is threadedly connected to a mounting seat 61, and a laser rangefinder 6 is fixed to the outer side of the mounting seat 61. The rear end of the single-rotation reciprocating screw rod 8 passes through the rear side of the second support plate 5 and is inserted into the mounting frame 1. The rear end of the leftmost single-rotation reciprocating screw rod 8 passes through the rear side of the mounting frame 1. The four single-rotation reciprocating screw rods 8 located in the mounting frame 1 form a transmission structure through a sprocket assembly 11. The regulating assembly includes an electric push rod 10 installed in the middle of the mounting frame 1, and the output end below the electric push rod 10 is connected to the mounting base plate 9. The second support plate 5 is installed on the right side of the first support plate 4, and the first support plate 4 and the second support plate 5 are arranged in a one-to-one correspondence.

[0020] During the construction of the natural gas pipeline, first, an installation groove for placing the natural gas pipeline in the construction area is excavated in the construction area, and then the entire surface deformation optical fiber detection equipment is moved to the side of the installation groove, and the installation frame 1 is placed on the surface away from the installation groove. At this time, the test optical fiber 3 is on the surface close to the installation groove. Then the staff holds the installation frame 1 by hand and starts the electric push rod 10 in the control assembly. At this time, the output end of the electric push rod 10 drives the installation base plate 9 in the installation frame 1 to move downward, and the sliders 12 on the left and right sides of the installation base plate 9 slide downward on the outside of the limit guide rod 13. When the installation base plate 9 moves downward, the second fixed cone 91 on the bottom surface is inserted into the surface. At the same time, the installation base plate 9 drives the upper installation When the rack assembly 15 moves downward together, the rack assembly 15 drives the transmission gear 141 meshed with the corresponding position to rotate when it moves downward, and the transmission gear 141 drives the rotating rod 14 to rotate. When the rotating rod 14 rotates, it drives the pushing block 142 to rotate, so that the pushing block 142 rotates from a horizontal state to a vertical state, and the pushing block 142 pushes the connecting frame 16 downward. At this time, the manual telescopic rod 161 is stretched to a certain length to ensure that the connecting frame 16 stably drives the fixed block 7 and the test optical fiber 3 to move downward. At this time, the test optical fiber 3 is in close contact with the ground surface, and the first fixing cone 71 is inserted into the inside of the ground surface, so it is convenient to quickly and stably install the entire detection equipment and the operation is convenient.

[0021] Then the entire detection equipment can detect the surface deformation. When the surface near the excavated installation groove undergoes vertical displacement deformation, the surface soil near the installation groove sinks downward, and the surface away from the installation groove does not sink downward, thereby ensuring the stable installation of the installation frame 1. Then the surface soil near the installation groove drives the fixed block 7, the first fixed cone 71 and the test optical fiber 3 at the corresponding position to sink and move downward together. At this time, the manual telescopic rod 161 continues to be stretched, and the test optical fiber 3 will be stretched, causing the optical signal to change. The composite modem instrument 2 monitors the changed optical signal in the test optical fiber 3, and the composite modem instrument 2 converts the optical signal into an electrical signal, and transmits the monitoring data to the external terminal through the wireless transmission module. Therefore, the ground deformation data can be obtained in real time, and then the surface deformation can be detected. Since this part is an existing technology, it will not be introduced in detail here.

[0022] At the same time, the rear end of the leftmost single-rotation reciprocating screw 8 can be connected to an external motor through a coupling, and the motor drives the leftmost single-rotation reciprocating screw 8 to rotate. The leftmost single-rotation reciprocating screw 8 drives the three groups of single-rotation reciprocating screws 8 on the right to rotate together through the sprocket assembly 11, so that the four groups of single-rotation reciprocating screws 8 rotate together. When the single-rotation reciprocating screw 8 rotates, it drives the mounting seat 61 connected to the outer thread to move back and forth. The mounting seat 61 drives the laser rangefinder 6 to move back and forth, and then the laser rangefinder 6 that moves back and forth detects the distance between the ground and the ground. The laser rangefinder 6 transmits the monitoring data of this signal to the external terminal through the wireless transmission module. The terminal analyzes and compares to determine whether there is a sinking deformation of the ground near the mounting groove. Therefore, the laser rangefinder 6 can further assist in detecting large surface deformation. At the same time, when the test optical fiber 3 is damaged, the laser rangefinder 6 can also perform detection work, thereby further improving the accuracy of detection and meeting different usage requirements.

[0023] Example 2: The surface deformation optical fiber detection device for natural gas pipeline construction in this embodiment discloses another structure of the control component based on Example 1. The control component in this embodiment does not need to use a power source, can save energy, and meet different usage needs. For specific structure, refer to the attached Figures 9-12 As shown, the regulating assembly includes a return spring 131 installed above the slider 12, and the return spring 131 is sleeved on the outside of the limit guide rod 13, a control frame 17 is provided on the rear side of the mounting frame 1, and the left and right ends of the control frame 17 are respectively inserted into the grooves opened on the left and right sides of the mounting frame 1, and the left and right ends of the control frame 17 are respectively connected to the two sliders 12, and a "U"-shaped through groove 171 is opened in the middle part of the "U"-shaped control frame 17. The slider 12 forms a lifting structure through the return spring 131, and an automatic control rod 18 is installed on the rear side of the mounting frame 1, and a support block 181 is fixed below the automatic control rod 18, and the width of the support block 181 is smaller than the diameter of the automatic control rod 18, and the diameter of the automatic control rod 18 is smaller than the width of the through groove 171.

[0024] When installing the entire detection equipment, the staff holds the installation frame 1 with their hands, and then manually rotates the automatic control rod 18, and the automatic control rod 18 drives the support block 181 to rotate 90 degrees. At this time, the support block 181 is set vertically to the installation frame 1. At this time, the stored force of the return spring 131 in the regulating assembly automatically drives the slider 12 to move downward on the outside of the limit guide rod 13, and the slider 12 drives the control frame 17 to move downward. At this time, the lower end of the automatic control rod 18 and the support block 181 pass through the through slot 171, which will not affect the descending work of the control frame 17. At the same time, the slider 12 drives the installation base plate 9 and the second fixed cone 91 to move downward, so that the second fixed cone 91 is inserted into the surface for installation and fixation. Then, as shown in Example 1, it can be The entire detection equipment is installed stably. Later, when the detection equipment needs to be disassembled and separated from the ground, it is only necessary to manually move the control frame 17 upward, and the control frame 17 drives the slider 12 and the mounting base 9 to move upward. At this time, the return spring 131 is squeezed and stored, and the second fixed cone 91 moves upward and separates from the ground. Then, the automatic control rod 18 is manually rotated 90° in the opposite direction, so that the support block 181 rotates to the bottom of the control frame 17. At this time, the support block 181 supports and limits the lower surface of the control frame 17 to prevent the control frame 17 from moving downward. Therefore, the entire detection equipment can be disassembled well for the next use, which can meet different usage requirements and complete a series of tasks.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A surface deformation optical fiber detection device for natural gas pipeline construction, comprising a mounting frame (1), and a composite modulation and demodulation instrument (2) mounted in a groove above the mounting frame, wherein a distributed optical fiber deformation sensing port on the front side of the composite modulation and demodulation instrument (2) is connected to a test optical fiber (3), characterized in that: The interior of the installation frame (1) is connected to a mounting base plate (9) via a regulating assembly, and a second fixing cone (91) is fixed to the bottom surface of the installation base plate (9), the rear end of the test optical fiber (3) passes through the front side of the installation frame (1), and a row of first support plates (4) and second support plates (5) are installed on the front side of the installation frame (1), and the outer side of the test optical fiber (3) is connected to the surface to be detected via a connecting assembly, and the upper side of the connecting assembly is connected to the first support plate (4) via a pushing assembly, and the right side of the second support plate (5) is connected to a laser rangefinder (6).

2. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 1, characterized in that: Slide blocks (12) are fixed on both the left and right sides of the mounting base (9), limiting guide rods (13) are installed in the grooves opened on the left and right sides of the mounting frame (1), and the limiting guide rods (13) are provided through the interior of the slide blocks (12), and a row of rack assemblies (15) are fixed on the upper surface of the mounting base (9).

3. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 2, characterized in that: The connection assembly comprises a fixing block (7) fixed on the outside of the upper portion of the test optical fiber (3), wherein the fixing block (7) is arranged in an arc shape, and a first fixing cone (71) for inserting into the surface to be tested is symmetrically mounted on the bottom surface of the fixing block (7).

4. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 3, characterized in that: The bottom surface of the first support plate (4) is grooved with a rotating rod (14), and the pushing assembly includes a pushing block (142) installed on the outside of the rotating rod (14). A connecting frame (16) in an inverted "L" shape is fixed above the fixed block (7), and the four corners above the connecting frame (16) are connected to the bottom surface of the first support plate (4) through manual telescopic rods (161), and a pushing block (142) is provided above the connecting frame (16). The connecting frame (16) forms a lifting structure through the pushing block (142), and the rear end of the rotating rod (14) passes through the rear side of the first support plate (4) and the front side of the mounting frame (1), and the rear end of the rotating rod (14) is installed with a transmission gear (141), and the transmission gear (141) is meshed and connected with the rack assembly (15) on the left.

5. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 1, characterized in that: A single-rotation reciprocating screw (8) is installed in the groove opened on the right side of the second support plate (5), and the outer side of the single-rotation reciprocating screw (8) is threadedly connected to the mounting seat (61), and a laser rangefinder (6) is fixed to the outer side of the mounting seat (61). The rear end of the single-rotation reciprocating screw (8) passes through the rear side of the second support plate (5) and is inserted into the mounting frame (1). The rear end of the single-rotation reciprocating screw (8) on the far left passes through the rear side of the mounting frame (1), and a transmission structure is formed between the four single-rotation reciprocating screws (8) located in the mounting frame (1) through a sprocket assembly (11).

6. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 1, characterized in that: The regulating assembly comprises an electric push rod (10) installed in the middle of the mounting frame (1), and the output end below the electric push rod (10) is connected to the mounting base plate (9).

7. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 1, characterized in that: A second support plate (5) is mounted on the right side of the first support plate (4), and the first support plate (4) and the second support plate (5) are arranged in a one-to-one correspondence.

8. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 2, characterized in that: The regulating assembly comprises a return spring (131) mounted above the slider (12), and the return spring (131) is sleeved on the outside of the limiting guide rod (13).

9. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 8, characterized in that: A control frame (17) is provided on the rear side of the installation frame (1), and the left and right ends of the control frame (17) are respectively inserted into the grooves provided on the left and right sides of the installation frame (1), and the left and right ends of the control frame (17) are respectively connected to the two sliders (12). A U-shaped through groove (171) is provided in the middle of the U-shaped control frame (17), and the slider (12) forms a lifting structure through a return spring (131).

10. The optical fiber detection device for ground deformation for natural gas pipeline construction according to claim 9, characterized in that: A self-control rod (18) is installed on the rear side of the installation frame (1), and a support block (181) is fixed below the self-control rod (18). The width of the support block (181) is smaller than the diameter of the self-control rod (18), and the diameter of the self-control rod (18) is smaller than the width of the through slot (171).

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