Geotechnical engineering slope deformation monitoring device and monitoring method

Abstract

The invention discloses a geotechnical engineering slope deformation monitoring device and monitoring method, and belongs to the technical field of geotechnical engineering. A geotechnical engineering slope deformation monitoring device comprises a plurality of monitoring units arranged along the slope of a slope body, each monitoring unit comprises an anchoring part, and the anchoring part comprises an upper anchor rod and a lower anchor rod which are vertically inserted into the slope body; the two positioning plates are fixedly arranged on the upper side of the upper anchor rod and the upper side of the lower anchor rod correspondingly, the positioning plates are perpendicular to the slope of the slope body, and a pressure value monitoring assembly is arranged between the two positioning plates; wherein the upper anchor rod and the lower anchor rod are the same in structure and are both provided with anti-falling assemblies used for preventing the upper anchor rod and the lower anchor rod from being separated from a slope body; according to the invention, the slope deformation can be comprehensively monitored, the monitoring unit is stably inserted into the slope body, and the accuracy of the monitoring result is improved.

Description

Technical Field

[0001] This invention relates to the field of geotechnical engineering technology, and in particular to a geotechnical engineering slope deformation monitoring device and monitoring method. Background Technology

[0002] Currently, my country's topography is complex and diverse, and complex and diverse slopes constantly emerge during engineering construction. Slopes are complex systems engineering projects, and their stability directly affects the smooth progress of the entire project and the personal safety of the workers. In addition, after the completion of the project, slopes also pose certain safety hazards to pedestrians and vehicles, so it is necessary to monitor the stability of slopes in real time. Since the instability and collapse of slopes do not occur instantaneously, but are the result of the accumulation of various instability factors over a certain period of time, developing from creep deformation to instability and sliding, it is necessary to continuously monitor the deformation of slopes at all stages.

[0003] The prior art patent with application number CN202323466430.6 discloses a surface deformation monitoring device for slopes in geotechnical engineering. It determines whether a landslide has occurred near the monitoring unit located below the pressure sensor by detecting the pressure value of the pressure sensor. However, in the actual situation of slope deformation, local depression or compression deformation may also occur. At this time, the distance between the two positioning plates, i.e., the monitoring points, will become smaller, and the square sleeve cannot effectively compress the pressure sensor, resulting in inaccurate detection results. At the same time, the existing positioning plates are generally inserted into the slope surface by anchor brackets, which makes the positioning plates easy to detach from the soil and unable to carry out continuous and effective monitoring. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a geotechnical engineering slope deformation monitoring device and monitoring method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A geotechnical engineering slope deformation monitoring device includes several sets of monitoring units arranged along the slope surface, each set of monitoring units comprising: An anchoring part, the anchoring part including an upper anchor rod and a lower anchor rod vertically inserted into the slope body; The positioning plate is provided in two and fixed on the upper side of the upper anchor rod and the lower anchor rod respectively. The positioning plate is perpendicular to the slope surface of the slope body, and a pressure value monitoring component is provided between the two positioning plates. The upper and lower anchor rods have the same structure and are both equipped with anti-detachment components to prevent them from separating from the slope.

[0006] Preferably, the pressure monitoring component includes an upper sleeve fitted on the outside of the positioning plate at the upper anchor rod, a first elastic element disposed between the inner wall of the upper sleeve and the positioning plate, an upper pressure sensor fixed on the positioning plate at the upper anchor rod, a lower sleeve fixedly connected to the positioning plate at the lower anchor rod, a slide rod slidably connected to the lower sleeve, a lower pressure sensor disposed at one end of the slide rod, a second elastic element disposed between the other end of the slide rod and the outer wall of the lower sleeve, and a pull rope disposed between the slide rod and the outer wall of the upper sleeve, wherein the lower pressure sensor moves against the inner wall of the lower sleeve.

[0007] Preferably, a communication station is provided at the bottom of the slope, and the output terminals of the upper pressure sensor and the lower pressure sensor are both connected to the input terminal of the communication station.

[0008] Preferably, both the upper and lower anchor rods include an anchor body and a soil-breaking component disposed at the bottom of the anchor body. The soil-breaking component is cone-shaped, and the anti-fall-off component is disposed within the anchor body.

[0009] Preferably, the anti-detachment component includes a plurality of mounting grooves arranged obliquely along the axial direction of the anchor body, a first screw rotatably connected in the mounting groove, a first sleeve threadedly connected to the first screw, and an anti-detachment tube fixed to the outside of the first sleeve and slidably connected to the inner wall of the mounting groove, wherein the end of the anti-detachment tube is tapered.

[0010] Preferably, a drive rod is rotatably disposed within the anchor body, a main bevel gear is disposed on the drive rod, and a secondary bevel gear meshing with the main bevel gear is disposed at the end of the first screw. The drive rod includes a threaded rod threadedly connected to the anchor body, a rotating rod rotatably connected within the threaded rod, and a telescopic rod fixedly disposed between the rotating rod and the threaded rod.

[0011] Preferably, a screw tube sleeved on the outside of the first sleeve is rotatably connected to the outside of the first screw, and a second sleeve is threadedly connected to the outside of the screw tube. A push plate is inclinedly arranged on the outer wall of the second sleeve, and an auxiliary fastening component that moves against the push plate is provided on the anti-detachment tube.

[0012] Preferably, the auxiliary fastening assembly includes a groove formed on the anti-detachment tube, a pressing plate rotatably connected to the groove via a pin, and a force-bearing plate fixed on the pressing plate and moving against the push plate. The pin is provided with a torsion spring for driving the pressing plate to reset and rotate.

[0013] Preferably, the solenoid is slidably disposed with the first screw, a guide strip is fixedly provided on the inner side wall of the solenoid, and a guide groove is provided on the first screw that slidably engages with the guide strip.

[0014] This invention also discloses a method for monitoring slope deformation in geotechnical engineering, which involves monitoring using the aforementioned geotechnical engineering slope deformation monitoring device, and further includes the following steps: S1: Staff members set up several monitoring units along the slope of the slope. When setting up each monitoring unit, first, the upper or lower anchor rod is vertically inserted into the slope of the slope body, and then the lower or upper anchor rod is vertically inserted into the slope of the slope body, so that the rope is taut. At this time, the lower pressure sensor is in contact with the inner wall of the lower sleeve. The staff observes the pressure on the lower pressure sensor through the communication station. The upper pressure sensor is pushed by the first elastic element on the upper sleeve, and the inner wall of the upper sleeve is not in contact with the upper pressure sensor. S2: When inserting the upper or lower anchor rod, the anchor body is inserted into the slope body through the conical soil-breaking component at the bottom; Then rotate the threaded rod of the drive rod to make the threaded rod rotate relative to the anchor body. The threaded rod transmits torque through the telescopic rod and drives the rotating rod to rotate in the anchor body. When the rotating rod rotates, the main bevel gear meshes with the secondary bevel gear on the first screw of each anti-detachment component. The first screw rotates and the first sleeve drives the anti-detachment tube to slide out along the installation groove. The anti-detachment tube is inserted into the soil of the slope body to limit the displacement of the anchor body. When the first screw rotates, it drives the screw tube to rotate synchronously through the guide bar. The second sleeve moves along the axial direction of the screw tube. As the anti-detachment tube moves out of the anchor body and is inserted into the soil, the second sleeve drives the push plate to abut against the force plate on the inner side of the extrusion plate. After the force plate is subjected to force, it pushes the extrusion plate to flip outward of the anti-detachment tube. The extrusion plate expands and compresses the soil on the outside of the anchor body and the anti-detachment tube, making the soil around the anchor body compact and further restricting the loosening of the anchor body. S3: After the upper and lower anchor bolts are installed, the pressure monitoring component begins to monitor the pressure. When a landslide occurs on the slope, the distance between the monitoring points where the upper and lower anchors are located increases. The rope will pull the upper sleeve and compress the first elastic element on the inner wall of the upper sleeve. The inner wall of the upper sleeve will come into contact with the upper pressure sensor. The upper pressure sensor will output the monitored pressure value as an analog signal to the communication station. The communication station will convert the analog signal into a digital signal and upload it to the cloud. At this time, the lower pressure sensor will still maintain the initial maximum value to monitor the pressure. When the slope body experiences local depression or compression deformation, the distance between the monitoring points of the upper and lower anchor rods becomes smaller, the rope will not apply tension to the upper sleeve, the sliding rod and the lower pressure sensor will be reset under the elastic action of the stretched second elastic element, the lower pressure sensor gradually moves away from the inner wall of the lower sleeve, and the pressure value monitored by the lower pressure sensor gradually decreases. S4: Monitoring personnel can check the cloud to see the pressure detected by the pressure sensor, thereby determining the deformation of the slope near the monitoring unit of the pressure sensor.

[0015] Compared with the prior art, the present invention provides a geotechnical engineering slope deformation monitoring device and method, which has the following beneficial effects: 1. The geotechnical engineering slope deformation monitoring device and method, by setting up pressure value monitoring components, can monitor various conditions of slope deformation such as landslides and depressions, ensuring the comprehensiveness of slope deformation monitoring and thus improving the accuracy of monitoring results.

[0016] 2. The slope deformation monitoring device and method for geotechnical engineering, by setting anti-detachment components on the upper and lower anchor rods, can effectively prevent the anchor rods from falling off the slope, thereby ensuring that the monitoring device can carry out long-term slope deformation monitoring.

[0017] 3. The slope deformation monitoring device and method for this geotechnical engineering uses an extrusion plate to expand and compress the soil outside the anchor body and the anti-detachment pipe, making the soil around the anchor body compact, further restricting the loosening of the anchor body, and improving the stability of the monitoring device installation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the monitoring unit of the present invention; Figure 3 This is a cross-sectional structural diagram of the monitoring unit of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of section A in the middle; Figure 5 This is a schematic diagram of the drive rod of the present invention; Figure 6 This is a cross-sectional structural diagram of the anti-detachment tube of the present invention; Figure 7 This is a schematic diagram of the structure of the first screw and solenoid of the present invention.

[0019] In the diagram: 1. Slope body; 2. Upper anchor bolt; 3. Lower anchor bolt; 4. Positioning plate; 5. Upper sleeve; 501. First elastic element; 502. Upper pressure sensor; 6. Lower sleeve; 601. Sliding rod; 602. Lower pressure sensor; 603. Second elastic element; 604. Pull rope; 7. Mounting groove; 701. First screw; 702. First sleeve; 703. Anti-detachment tube; 8. Drive rod; 801. Threaded rod; 802. Telescopic rod; 803. Rotating rod; 9. Main bevel gear; 901. Secondary bevel gear; 10. Screw tube; 1001. Second sleeve; 1002. Push plate; 11. Groove; 111. Extrusion plate; 112. Force plate; 12. Guide strip; 121. Guide groove; 13. Anchor body; 131. Soil breaking component. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] like Figures 1 to 3 As shown, this embodiment proposes a geotechnical engineering slope deformation monitoring device, including several sets of monitoring units arranged along the slope 1. Each set of monitoring units includes: an anchoring part and a positioning plate 4. The anchoring part includes an upper anchor rod 2 and a lower anchor rod 3 vertically inserted into the slope 1. Two positioning plates 4 are provided and fixed on the upper side of the upper anchor rod 2 and the lower anchor rod 3 respectively. The positioning plates 4 are perpendicular to the slope 1. A pressure value monitoring component is provided between the two positioning plates 4. The upper anchor rod 2 and the lower anchor rod 3 have the same structure and are both provided with anti-detachment components to prevent them from separating from the slope 1. Specifically, several monitoring units are equidistantly arranged on the slope 1. Each monitoring unit can monitor various conditions of slope 1 deformation, such as landslides and depressions, through a pressure value monitoring component, ensuring the comprehensiveness of slope deformation monitoring and thus improving the accuracy of monitoring results. Furthermore, the anti-detachment components inside the upper anchor rod 2 and lower anchor rod 3 can effectively prevent the anchor rods from falling off the slope, thereby ensuring that the monitoring device can carry out long-term slope deformation monitoring work and ensuring the stability and accuracy of the monitoring device's monitoring work.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the pressure monitoring component further includes an upper sleeve 5 sleeved on the outside of the positioning plate 4 at the upper anchor rod 2, a first elastic element 501 disposed between the inner wall of the upper sleeve 5 and the positioning plate 4, an upper pressure sensor 502 fixed on the positioning plate 4 at the upper anchor rod 2, a lower sleeve 6 fixedly connected to the positioning plate 4 at the lower anchor rod 3, a slide rod 601 slidably connected to the lower sleeve 6, a lower pressure sensor 602 disposed at one end of the slide rod 601, a second elastic element 603 disposed between the other end of the slide rod 601 and the outer wall of the lower sleeve 6, and a pull rope 604 disposed between the slide rod 601 and the outer wall of the upper sleeve 5. The lower pressure sensor 602 moves against the inner wall of the lower sleeve 6. Furthermore, a communication station is installed at the bottom of the slope body 1. The output ends of the upper pressure sensor 502 and the lower pressure sensor 602 are both connected to the input end of the communication station. The communication station is existing technology and will not be described in detail here. Specifically, when setting up the monitoring unit, firstly, the upper anchor rod 2 or the lower anchor rod 3 is vertically inserted into the slope of the slope body 1. Then, the lower anchor rod 3 or the upper anchor rod 2 is vertically inserted into the slope of the slope body 1, so that the rope 604 is taut. At this time, the lower pressure sensor 602 is in contact with the inner wall of the lower sleeve 6. The staff observes the pressure on the lower pressure sensor 602 through the communication station. The upper pressure sensor 502 is pushed by the first elastic element 501 against the upper sleeve 5, so the inner wall of the upper sleeve 5 is not in contact with the upper pressure sensor 502. The pressure value monitoring component begins to monitor. When a landslide occurs on slope 1, the distance between the monitoring points where the upper anchor rod 2 and the lower anchor rod 3 are located increases. The rope 604 will pull the upper sleeve 5 and cause the inner wall of the upper sleeve 5 to compress the first elastic element 501. The inner wall of the upper sleeve 5 abuts against the upper pressure sensor 502. The upper pressure sensor 502 outputs the monitored pressure value as an analog signal to the communication station. The communication station converts the analog signal into a digital signal and uploads it to the cloud. At this time, the lower pressure sensor 602 still maintains the initial maximum value monitoring pressure. When the slope 1 experiences local depression or compression deformation, the distance between the monitoring points of the upper anchor rod 2 and the lower anchor rod 3 becomes smaller, the rope 604 does not apply tension to the upper sleeve 5, the slide rod 601 and the lower pressure sensor 602 are reset under the elastic action of the stretched second elastic element 603, the lower pressure sensor 602 gradually moves away from the inner wall of the lower sleeve 6, and the pressure value monitored by the lower pressure sensor 602 gradually decreases. It can monitor various conditions such as slope deformation, landslides, and depressions, ensuring the comprehensiveness of slope deformation monitoring and thus improving the accuracy of monitoring results.

[0025] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, both the upper anchor rod 2 and the lower anchor rod 3 include an anchor body 13 and a soil-breaking component 131 disposed at the bottom of the anchor body 13. The soil-breaking component 131 is cone-shaped, and the anti-fall-off component is disposed inside the anchor body 13. The cone-shaped soil-breaking component 131 at the bottom facilitates the quick insertion of the anchor body 13 into the slope body 1.

[0026] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in a preferred embodiment, based on the above method, the anti-detachment component further includes a plurality of mounting grooves 7 arranged obliquely along the axial direction of the anchor body 13, a first screw 701 rotatably connected in the mounting groove 7, a first sleeve 702 threadedly connected to the first screw 701, and an anti-detachment tube 703 fixed on the outside of the first sleeve 702 and slidably connected to the inner wall of the mounting groove 7, wherein the end of the anti-detachment tube 703 is set to be tapered. Furthermore, a drive rod 8 is rotatably provided inside the anchor body 13, and a main bevel gear 9 is provided on the drive rod 8. The end of the first screw 701 is provided with a secondary bevel gear 901 that meshes with the main bevel gear 9. The drive rod 8 includes a threaded rod 801 that is threadedly connected to the anchor body 13, a rotating rod 803 that is rotatably connected inside the threaded rod 801, and a telescopic rod 802 that is fixedly provided between the rotating rod 803 and the threaded rod 801. Specifically, by rotating the drive rod 8, the drive rod 8 rotates relative to the anchor body 13. The drive rod 8 drives the rotating rod 803 to rotate inside the anchor body 13. The main bevel gear 9 meshes with the secondary bevel gear 901 on the first screw 701 of each anti-detachment component. The first screw 701 rotates, and the first sleeve 702 drives the anti-detachment tube 703 to slide out along the mounting groove 7. The anti-detachment tube 703 is inserted into the soil of the slope body 1, restricting the displacement of the anchor body 13. The anti-detachment tube 703 is inserted from the anchor body 13 to the outer soil. The anti-detachment tube 703 will not cause large-scale disturbance to the soil, effectively preventing the anchor body 13 from loosening. It should be noted that, in order to prevent the drive rod 8 from rotating arbitrarily within the anchor body 13, a drive rod 8 is rotatably installed within the anchor body 13. A main bevel gear 9 is installed on the drive rod 8, and a secondary bevel gear 901 that meshes with the main bevel gear 9 is installed at the end of the first screw 701. The drive rod 8 includes a threaded rod 801 that is threadedly connected to the anchor body 13, a rotating rod 803 that is rotatably connected within the threaded rod 801, and a telescopic rod 802 that is fixedly installed between the rotating rod 803 and the threaded rod 801. The drive rod 8 is locked to the anchor body 13 through the first screw 701. When the first screw 701 rotates relative to the anchor body 13, the first screw 701 transmits torque through the telescopic rod 802, causing the first screw 701 to drive the main bevel gear 9 on the rotating rod 803 to rotate.

[0027] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, the first sleeve 702 is rotatably connected to the outside of the first screw 701, the outside of the screw 702 is threadedly connected to the second sleeve 1001, the outer side of the second sleeve 1001 is inclinedly provided with a push plate 1002, and the anti-detachment tube 703 is provided with an auxiliary fastening component that moves against the push plate 1002. Furthermore, the auxiliary fastening assembly includes a groove 11 formed on the anti-detachment tube 703, a pressing plate 111 rotatably connected to the groove 11 via a pin, and a force-bearing plate 112 fixed on the pressing plate 111 and movingly abutting against the push plate 1002. A torsion spring for driving the pressing plate 111 to reset and rotate is provided on the pin. Furthermore, the solenoid 10 is slidably disposed with the first screw 701, the inner sidewall of the solenoid 10 is fixedly provided with a guide strip 12, and the first screw 701 is provided with a guide groove 121 that slidably engages with the guide strip 12; Specifically, when the drive rod 8 rotates relative to the anchor body 13, the main bevel gear 9 on the rotating rod 803 meshes with the secondary bevel gear 901 on the first screw 701 of each anti-detachment component. The first screw 701 rotates, and when the first screw 701 rotates, it drives the screw tube 10 to rotate synchronously through the guide bar 12. The second sleeve 1001 moves axially along the screw tube 10. As the anti-detachment tube 703 moves out of the anchor body 13 and is inserted into the soil, the second sleeve 1001 drives the push plate 1002 to abut against the force plate 112 on the inner side of the extrusion plate 111. After the force plate 112 is subjected to force, it pushes the extrusion plate 111 to flip outward of the anti-detachment tube 703. The extrusion plate 111 expands and compresses the soil outside the anchor body 13 and the anti-detachment tube 703, making the soil around the anchor body 13 compact and further restricting the loosening of the anchor body 13.

[0028] This invention also discloses a method for monitoring slope deformation in geotechnical engineering, which involves monitoring using the aforementioned geotechnical engineering slope deformation monitoring device, and further includes the following steps: S1: Staff members set up several monitoring units along the slope of slope 1; When setting up each monitoring unit, firstly, the upper anchor rod 2 or the lower anchor rod 3 is vertically inserted into the slope of the slope body 1. Then, the lower anchor rod 3 or the upper anchor rod 2 is vertically inserted into the slope of the slope body 1, so that the rope 604 is taut. At this time, the lower pressure sensor 602 is in contact with the inner wall of the lower sleeve 6. The staff observes the pressure on the lower pressure sensor 602 through the communication station. The upper pressure sensor 502 is pushed by the first elastic element 501 against the upper sleeve 5, and the inner wall of the upper sleeve 5 is not in contact with the upper pressure sensor 502. S2: When inserting the upper anchor rod 2 or the lower anchor rod 3, the anchor body 13 is inserted into the slope body 1 through the conical soil breaking part 131 at the bottom; Then, the threaded rod 801 of the drive rod 8 is rotated, causing the threaded rod 801 to rotate relative to the anchor body 13. The threaded rod 801 transmits torque through the telescopic rod 802 and drives the rotating rod 803 to rotate inside the anchor body 13. When the rotating rod 803 rotates, the main bevel gear 9 meshes with the secondary bevel gear 901 on the first screw 701 of each anti-detachment component. The first screw 701 rotates, and the first sleeve 702 drives the anti-detachment tube 703 to slide out along the mounting groove 7. The anti-detachment tube 703 is inserted into the soil of the slope body 1 to restrict the displacement of the anchor body 13. When the first screw 701 rotates, it drives the screw tube 10 to rotate synchronously through the guide bar 12. The second sleeve 1001 moves along the axial direction of the screw tube 10. As the anti-detachment tube 703 moves out of the anchor body 13 and is inserted into the soil, the second sleeve 1001 drives the push plate 1002 to abut against the force plate 112 on the inner side of the extrusion plate 111. After the force plate 112 is subjected to force, it pushes the extrusion plate 111 to flip outward of the anti-detachment tube 703. The extrusion plate 111 expands and compresses the soil on the outside of the anchor body 13 and the anti-detachment tube 703, making the soil around the anchor body 13 compact and further restricting the loosening of the anchor body 13. S3: After the upper anchor bolt 2 and the lower anchor bolt 3 are installed, the pressure monitoring component begins to monitor the pressure. When a landslide occurs on slope 1, the distance between the monitoring points where the upper anchor rod 2 and the lower anchor rod 3 are located increases. The rope 604 will pull the upper sleeve 5 and cause the inner wall of the upper sleeve 5 to compress the first elastic element 501. The inner wall of the upper sleeve 5 abuts against the upper pressure sensor 502. The upper pressure sensor 502 outputs the monitored pressure value as an analog signal to the communication station. The communication station converts the analog signal into a digital signal and uploads it to the cloud. At this time, the lower pressure sensor 602 still maintains the initial maximum value monitoring pressure. When the slope 1 experiences local depression or compression deformation, the distance between the monitoring points of the upper anchor rod 2 and the lower anchor rod 3 becomes smaller, the rope 604 does not apply tension to the upper sleeve 5, the slide rod 601 and the lower pressure sensor 602 are reset under the elastic action of the stretched second elastic element 603, the lower pressure sensor 602 gradually moves away from the inner wall of the lower sleeve 6, and the pressure value monitored by the lower pressure sensor 602 gradually decreases. S4: Monitoring personnel can check the cloud to see the pressure sensed by the pressure sensor, and thus determine the deformation of the slope 1 near the monitoring unit of the pressure sensor.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A slope deformation monitoring device for geotechnical engineering, comprising several sets of monitoring units arranged along the inclined surface of a slope (1), characterized in that, Each group of monitoring units includes: Anchoring part, the anchoring part includes an upper anchor rod (2) and a lower anchor rod (3) that are vertically inserted into the slope body (1). Positioning plate (4), two positioning plates (4) are provided and fixed on the upper side of the upper anchor rod (2) and the lower anchor rod (3) respectively. The positioning plate (4) is set perpendicular to the slope of the slope body (1). A pressure value monitoring component is provided between the two positioning plates (4). The upper anchor rod (2) and the lower anchor rod (3) have the same structure and are both equipped with anti-detachment components to prevent them from separating from the slope body (1).

2. The geotechnical engineering slope deformation monitoring device according to claim 1, characterized in that, The pressure monitoring assembly includes an upper sleeve (5) sleeved on the outside of the positioning plate (4) at the upper anchor rod (2), a first elastic element (501) disposed between the inner wall of the upper sleeve (5) and the positioning plate (4), an upper pressure sensor (502) fixed on the positioning plate (4) at the upper anchor rod (2), a lower sleeve (6) fixedly connected to the positioning plate (4) at the lower anchor rod (3), a slide rod (601) slidably connected to the lower sleeve (6), a lower pressure sensor (602) disposed at one end of the slide rod (601), a second elastic element (603) disposed between the other end of the slide rod (601) and the outer wall of the lower sleeve (6), and a pull rope (604) disposed between the slide rod (601) and the outer wall of the upper sleeve (5). The lower pressure sensor (602) moves against the inner wall of the lower sleeve (6).

3. The geotechnical engineering slope deformation monitoring device according to claim 2, characterized in that, A communication station is provided at the bottom of the slope body (1), and the output ends of the upper pressure sensor (502) and the lower pressure sensor (602) are both connected to the input end of the communication station.

4. The geotechnical engineering slope deformation monitoring device according to claim 1, characterized in that, The upper anchor (2) and the lower anchor (3) both include an anchor body (13) and a soil breaking component (131) set at the bottom of the anchor body (13). The soil breaking component (131) is set in a cone shape, and the anti-fall-off component is set inside the anchor body (13).

5. A geotechnical engineering slope deformation monitoring device according to claim 4, characterized in that, The anti-detachment component includes several mounting grooves (7) arranged obliquely along the axial direction of the anchor body (13), a first screw (701) rotatably connected in the mounting groove (7), a first sleeve (702) threadedly connected to the first screw (701), and an anti-detachment tube (703) fixed on the outside of the first sleeve (702) and slidably connected to the inner wall of the mounting groove (7). The end of the anti-detachment tube (703) is set to be tapered.

6. The geotechnical engineering slope deformation monitoring device according to claim 5, characterized in that, A drive rod (8) is rotatably disposed inside the anchor body (13). A main bevel gear (9) is disposed on the drive rod (8). A secondary bevel gear (901) that meshes with the main bevel gear (9) is disposed at the end of the first screw (701). The drive rod (8) includes a threaded rod (801) that is threadedly connected to the anchor body (13), a rotating rod (803) that is rotatably connected inside the threaded rod (801), and a telescopic rod (802) that is fixedly disposed between the rotating rod (803) and the threaded rod (801).

7. A geotechnical engineering slope deformation monitoring device according to claim 5, characterized in that, The first sleeve (702) is rotatably connected to a threaded tube (10) sleeved on the outside of the first screw (701). The threaded tube (10) is threadedly connected to a second sleeve (1001). A push plate (1002) is inclinedly provided on the outer wall of the second sleeve (1001). An auxiliary fastening component is provided on the anti-detachment tube (703) to move against the push plate (1002).

8. The geotechnical engineering slope deformation monitoring device according to claim 7, characterized in that, The auxiliary fastening assembly includes a groove (11) opened on the anti-detachment tube (703), a pressing plate (111) rotatably connected in the groove (11) by a pin, and a force-bearing plate (112) fixed on the pressing plate (111) and moving against the push plate (1002). A torsion spring for driving the pressing plate (111) to reset rotation is provided on the pin.

9. A geotechnical engineering slope deformation monitoring device according to claim 8, characterized in that, The solenoid (10) is slidably disposed with the first screw (701). A guide strip (12) is fixedly disposed on the inner side wall of the solenoid (10). A guide groove (121) is disposed on the first screw (701) that is slidably engaged with the guide strip (12).

10. A method for monitoring slope deformation in geotechnical engineering, comprising monitoring using a slope deformation monitoring device as described in claim 9, characterized in that... It also includes the following steps: S1: Staff members set up several monitoring units along the slope (1) of the slope body; When each monitoring unit is set up, firstly, the upper anchor rod (2) or the lower anchor rod (3) is vertically inserted into the slope of the slope body (1), and then the lower anchor rod (3) or the upper anchor rod (2) is vertically inserted into the slope of the slope body (1) to make the rope (604) taut. At this time, the lower pressure sensor (602) is in contact with the inner wall of the lower sleeve (6). The staff observes the pressure on the lower pressure sensor (602) through the communication station. The upper pressure sensor (502) is pushed by the first elastic element (501) against the upper sleeve (5), and the inner wall of the upper sleeve (5) is not in contact with the upper pressure sensor (502). S2: When inserting the upper anchor rod (2) or the lower anchor rod (3), the anchor body (13) is inserted into the slope body (1) through the conical soil breaking part (131) at the bottom; Then rotate the threaded rod (801) of the drive rod (8) to rotate the threaded rod (801) relative to the anchor body (13). The threaded rod (801) transmits torque through the telescopic rod (802) and drives the rotating rod (803) to rotate inside the anchor body (13). When the rotating rod (803) rotates, the main bevel gear (9) meshes with the secondary bevel gear (901) on the first screw (701) of each anti-detachment component. The first screw (701) rotates, and the first sleeve (702) drives the anti-detachment tube (703) to slide out along the installation groove (7). The anti-detachment tube (703) is inserted into the soil of the slope body (1) to restrict the displacement of the anchor body (13). When the first screw (701) rotates, it drives the screw tube (10) to rotate synchronously through the guide bar (12). The second sleeve (1001) moves along the axial direction of the screw tube (10). As the anti-detachment tube (703) moves out of the anchor body (13) and is inserted into the soil, the second sleeve (1001) drives the push plate (1002) to abut against the force plate (112) on the inner side of the extrusion plate (111). After the force plate (112) is subjected to force, it pushes the extrusion plate (111) to flip to the outside of the anti-detachment tube (703). The extrusion plate (111) expands and compresses the soil outside the anchor body (13) and the anti-detachment tube (703), making the soil around the anchor body (13) compact and further restricting the loosening of the anchor body (13). S3: After the upper anchor bolt (2) and lower anchor bolt (3) are installed, the pressure monitoring component begins to monitor the pressure. When a landslide occurs on the slope (1), the distance between the monitoring points where the upper anchor (2) and the lower anchor (3) are located increases. The rope (604) will pull the upper sleeve (5) and cause the inner wall of the upper sleeve (5) to compress the first elastic element (501). The inner wall of the upper sleeve (5) comes into contact with the upper pressure sensor (502). The upper pressure sensor (502) outputs the monitored pressure value as an analog signal to the communication station. The communication station converts the analog signal into a digital signal and uploads it to the cloud. At this time, the lower pressure sensor (602) still maintains the initial maximum value monitoring pressure. When the slope body (1) experiences local depression or compression deformation, the distance between the monitoring points where the upper anchor rod (2) and the lower anchor rod (3) are located decreases, the rope (604) does not apply tension to the upper sleeve (5), the sliding rod (601) and the lower pressure sensor (602) are reset under the elastic action of the stretched second elastic element (603), the lower pressure sensor (602) gradually moves away from the inner wall of the lower sleeve (6), and the pressure value monitored by the lower pressure sensor (602) gradually decreases; S4: The monitoring personnel can check the pressure situation of the pressure sensor by checking the cloud and thus determine the deformation of the slope (1) near the monitoring unit of the pressure sensor.

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