An automatic monitoring device for the change of the orientation of the inclinometer pipe orifice of a shallow landslide and its detection and installation method

Abstract

The invention relates to an automatic monitoring device for the azimuth change of an inclinometer tube of a shallow landslide and a detection and installation method thereof. The device comprises a horizontal support shaft, a vertical gear, a horizontal transmission gear, an inclinometer tube and vertical support shafts respectively fixed at both ends of the horizontal support shaft, wherein the bottom of the vertical support shaft is anchored at a deep position that is not easily deformed and approximates both sides of a landslide surface; the vertical gear is provided with vertical gear transmission ridge teeth, the center of the vertical gear is provided with a vertical gear through hole, and a horizontal axis bearing is also provided, the outer ring of the horizontal axis bearing is fixed to the vertical gear through hole, and the inner ring of the horizontal axis bearing is sleeved on and fixed to the horizontal support shaft between the two vertical support shafts; the vertical gear can rotate around the horizontal axis bearing; through the invention, the rotation of the vertical axis of the inclinometer tube in the horizontal plane is converted into an inclined motion in the vertical plane, and a dual-axis gravity accelerometer is used for automatic monitoring.

Description

Technical Field

[0001] The invention relates to an automatic monitoring device for azimuth change of a shallow landslide inclinometer pipe orifice and a detection and installation method thereof, and belongs to the technical field of prefabricated pump stations. Background Art

[0002] Shallow landslides are widely distributed in reservoir dams, road slopes and natural environments, accounting for a large proportion of landslides. Inclinometer tubes are the main method for monitoring landslide deformation, but currently the torsion of the inclinometer tube itself cannot be monitored, resulting in the inability to verify the direction of deformation monitoring, which brings systematic errors to the measured values. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art and to provide an automatic monitoring device for the azimuth change of the inclinometer pipe orifice of a shallow landslide, which has a reasonable structure, is easy to manufacture and manufacture, and is convenient to use, and a detection and installation method thereof.

[0004] The object of the present invention is achieved as follows: an automatic monitoring device for the position change of the pipe opening of the shallow landslide inclinometer tube, characterized in that it comprises a horizontal support shaft, a vertical gear, a horizontal transmission gear, an inclinometer tube and vertical support shafts respectively fixed to both ends of the horizontal support shaft, and the bottom of the vertical support shaft is anchored at a deep part that is not easy to deform and close to both sides of the landslide surface;

[0005] The vertical gear is provided with vertical gear transmission ridge teeth, the center of the vertical gear is provided with a vertical gear through hole, and a horizontal axis bearing is also provided, the outer ring of the horizontal axis bearing is fixed to the vertical gear through hole, and the inner ring of the horizontal axis bearing is sleeved and fixed on the horizontal support shaft between the two vertical support shafts; the vertical gear can rotate around the horizontal axis bearing;

[0006] The horizontal gear is provided with a horizontal gear transmission ridge tooth, and the center of the horizontal gear transmission ridge tooth is provided with a vertical axis fixing hole of the inclinometer tube; the top of the inclinometer tube is fixed in the vertical axis fixing hole of the inclinometer tube, the top is above the ground, the bottom passes downward through the approximate landslide surface, and the inclinometer tube is perpendicular to the ground; the rotation of the inclinometer tube drives the horizontal gear to rotate, and the horizontal gear and the inclinometer tube rotate synchronously;

[0007] The vertical gear transmission ridge teeth on the vertical gear mesh with the horizontal gear transmission ridge teeth on the horizontal gear, and the vertical gear rotates with the rotation of the horizontal gear;

[0008] A biaxial acceleration sensor is fixedly installed on the vertical gear, and the biaxial acceleration sensor obtains the rotation angle of the vertical gear on the vertical plane by measuring the gravity acceleration component.

[0009] The vertical support shaft is sleeved with a vertical protection tube for reducing the influence of external soil deformation on the vertical support shaft.

[0010] The horizontal axis bearing is a high-precision, high-rigidity, corrosion-resistant, and non-deflection bearing.

[0011] The vertical support shaft adopts a reinforced concrete structure.

[0012] A method for detecting a shallow landslide using an automatic monitoring device for changes in the orientation of an inclinometer pipe orifice, characterized by:

[0013] When the inclinometer tube itself twists, it drives the horizontal gear to twist. The twisting of the horizontal gear drives the vertical gear meshing with the horizontal gear to twist synchronously. The biaxial acceleration sensor obtains the rotation angle of the vertical gear on the vertical plane by measuring the gravity acceleration component, thereby obtaining the quantitative change of the orientation of the inclinometer tube mouth of the shallow landslide.

[0014] A method for installing an automatic monitoring device for the azimuth change of a shallow landslide inclinometer pipe opening, characterized in that it comprises the following steps:

[0015] 1) According to the deformation size and range of the upper landslide body where the inclinometer is located, assuming that its annual variation is X, then take 1 / 10 to 1 / 12 of its accuracy as its accuracy;

[0016] 2) Convert the above accuracy requirements into error limit requirements for horizontal torsion angles according to the diameter of the inclinometer tube;

[0017] 3) According to the above step 2), determine the corresponding instrument technical indicators and the stiffness requirements of the support system;

[0018] 4) According to the instrument accuracy requirements of step 3), determine the radius ratio of the vertical gear and the horizontal gear; according to the stiffness requirements, consider the load of the soil and its own creep to perform structural calculations and optimize the material and structure of the support system, which includes a horizontal support shaft and a vertical support shaft;

[0019] 5) Carry out processing, civil construction, installation and commissioning according to the above steps;

[0020] The two ends of the horizontal support shaft are respectively fixed with vertical support shafts, and the bottom of the vertical support shaft is anchored in a deep part that is not easy to deform and close to the lower part of the landslide surface;

[0021] The outer ring of the horizontal axis bearing is fixed to the vertical gear through a hole, and the inner ring of the horizontal axis bearing is sleeved and fixed on the horizontal support shaft between the two horizontal axis bearings;

[0022] The top of the inclinometer tube is fixed in the fixing hole of the vertical axis of the inclinometer tube, and the bottom thereof is extended through the ground to the approximate landslide surface;

[0023] The vertical gear transmission ridge teeth on the vertical gear are meshed with the horizontal gear transmission ridge teeth on the horizontal gear, and the vertical gear rotates with the rotation of the horizontal gear;

[0024] A biaxial acceleration sensor is fixedly installed on the vertical gear, and the biaxial acceleration sensor obtains the rotation angle of the vertical gear on the vertical plane by measuring the gravity acceleration component.

[0025] The present invention has a reasonable structure, is easy to manufacture and manufacture, and is convenient to use. In the present invention, a dual-axis acceleration sensor is used to obtain the rotation angle of the vertical gear on the vertical plane by measuring the gravity acceleration component. The vertical transmission gear has a trapezoidal high-precision transmission tooth on it, which is used to achieve high-precision transmission with the horizontal gear, and its radius is r. The vertical gear transmission ridge teeth and the horizontal axis bearing ensure that the vertical gear only rotates with small friction under the torque of the horizontal gear. The horizontal gear and the vertical gear achieve high-precision transmission, and the horizontal gear transmission ridge teeth and the vertical axis fixing hole of the inclinometer tube ensure that the horizontal gear and the inclinometer tube rotate synchronously and consistently.

[0026] The horizontal support shaft requires high precision, high rigidity, corrosion resistance, and no deflection. A vertical protection tube is sleeved on the vertical support shaft to reduce the influence of external soil deformation on the vertical support shaft. The vertical support shaft is used to anchor in deep parts where deformation can be ignored, and adopts reinforced concrete structure.

[0027] During processing, according to the deformation of the inclinometer tube, assuming that its annual variation is X, take 1 / 10 to 1 / 12 of its accuracy as its accuracy. According to the diameter of the inclinometer tube, convert the above accuracy requirements into the error limit requirements of the horizontal torsion angle. According to the corresponding instrument technical indicators and the stiffness requirements of the support system. Determine the ratio of the radius of the vertical and horizontal gears according to the instrument accuracy requirements; according to the stiffness requirements, consider the load of the soil and its own creep for structural calculations, and optimize the materials and structures of the support system. Carry out civil construction, processing, installation and commissioning according to the above steps. Complete the system trial operation assessment.

[0028] Through the present invention, the rotation of the vertical axis of the inclinometer tube in the horizontal plane is converted into the tilting movement in the vertical plane, and the dual-axis gravity accelerometer is used for automatic monitoring. The gravity accelerometer used in the present invention is not affected by geomagnetic fluctuations, and is located outside the pipe mouth, using an isolation structure or outside the influence area. At the same time, it is constructed with stable anchoring and reinforced concrete with high rigidity. It is not affected by the deformation area where the inclinometer tube is located, and it is convenient for inspection and calibration. After the inclinometer tube torsion is monitored, it can be directly used for inclinometer deformation correction, and can also determine the deformation state of deep underground, which is of great significance to improving the deformation monitoring of slopes and earth-rock dams.

[0029] At the same time, the monitoring accuracy can be improved by the ratio of the two gear diameters. The two transmission gears can be made of titanium alloy structure to ensure a small thermal deformation coefficient and corrosion resistance, light weight, safety and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the meshing structure of the vertical gear and the horizontal transmission gear in the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the vertical gear in the present invention in a side view;

[0033] Figure 4 It is a schematic diagram of the structure of the horizontal transmission gear in the present invention in a top view;

[0034] Among them: 1 dual-axis acceleration sensor, 2 vertical gear, 2-1 vertical gear transmission ridge, 2-2 horizontal axis bearing, 3 horizontal transmission gear, 3-1 horizontal gear transmission ridge, 3-2 inclinometer tube vertical axis fixing hole, 4 horizontal support shaft, 5 vertical protection tube, 6 vertical support shaft, 7 inclinometer tube, 8 ground, 9 approximate landslide surface. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and the accompanying descriptions.

[0036] An automatic monitoring device for the azimuth change of the inclinometer tube mouth of a shallow landslide is characterized in that it includes a horizontal support shaft 4, a vertical gear 2, a horizontal transmission gear 3, an inclinometer tube 7, and a vertical support shaft 6 respectively fixed to the two ends of the horizontal support shaft 4, and the bottom of the vertical support shaft 6 is anchored in a deep part that is not easy to deform and is close to both sides of the landslide surface 9.

[0037] A vertical gear transmission tooth 2-1 is arranged on the vertical gear 2, a vertical gear through hole is arranged in the center of the vertical gear 2, and a horizontal axis bearing 2-2 is also arranged. The outer ring of the horizontal axis bearing 2-2 is fixed to the vertical gear through hole, and the inner ring of the horizontal axis bearing 2-2 is sleeved and fixed on the horizontal support shaft 4 between the two vertical support shafts 6; the vertical gear 2 can rotate around the horizontal axis bearing 2-2.

[0038] A horizontal gear transmission ridge 3-1 is arranged on the horizontal gear 3, and a vertical axis fixing hole 3-2 of the inclinometer tube is arranged at the center of the horizontal gear transmission ridge 3-1; the top of the inclinometer tube 7 is fixed in the vertical axis fixing hole 3-2 of the inclinometer tube, the top is above the ground 8, the bottom passes downward through the approximate landslide surface 9, and the inclinometer tube 7 is perpendicular to the ground 8; the rotation of the inclinometer tube 7 drives the horizontal gear 3 to rotate, and the horizontal gear 3 and the inclinometer tube 7 rotate synchronously.

[0039] The vertical gear transmission ridge teeth 2-1 on the vertical gear 2 mesh with the horizontal gear transmission ridge teeth 3-1 on the horizontal gear 3. A biaxial acceleration sensor 1 is fixedly installed on the vertical gear 2. The biaxial acceleration sensor 1 obtains the rotation angle of the vertical gear 2 on the vertical plane by measuring the gravity acceleration component.

[0040] Furthermore, a vertical protection tube 5 is sleeved on the vertical support shaft 6 to reduce the influence of external soil deformation on the vertical support shaft 6. The horizontal axis bearing 2-2 is a high-precision, high-rigidity, corrosion-resistant, and non-deflection bearing. The vertical support shaft 6 adopts a reinforced concrete structure.

[0041] The detection method is that when the inclinometer tube 7 itself is twisted, it drives the horizontal gear 3 to twist, and the twisting of the horizontal gear 3 drives the vertical gear 2 meshing with the horizontal gear 3 to twist synchronously, and the biaxial acceleration sensor 1 obtains the rotation angle of the vertical gear 2 on the vertical plane by measuring the gravity acceleration component, thereby obtaining the quantitative change of the orientation of the inclinometer tube mouth of the shallow landslide.

[0042] When installing an automatic monitoring device for the azimuth change of a shallow landslide inclinometer pipe, the device comprises the following steps:

[0043] 1) According to the deformation of the part of the landslide surface 9 where the inclinometer tube 7 is located, assuming that its annual variation is X, then take 1 / 10 to 1 / 12 of its accuracy as its accuracy;

[0044] 2) Convert the above accuracy requirements into error limit requirements of horizontal torsion angle according to the diameter of the inclinometer tube 7;

[0045] 3) According to the above step 2), determine the corresponding instrument technical indicators and the stiffness requirements of the support system;

[0046] 4) According to the instrument accuracy requirements of step 3), the radius ratio of the vertical gear 2 and the horizontal gear 3 is determined; according to the stiffness requirements, the load of the soil and its own creep are considered to perform structural calculations, and the materials and structures of the support system are optimized. The support system includes a horizontal support shaft 4 and a vertical support shaft 6;

[0047] 5) Perform combined installation; fix the vertical support shaft 6 at both ends of the horizontal support shaft 4 respectively, and anchor the bottom of the vertical support shaft 6 to the deep part that is not easy to deform on both sides of the approximate landslide surface 9; fix the outer ring of the horizontal axis bearing 2-2 and the vertical gear through the hole, and the inner ring of the horizontal axis bearing 2-2 is sleeved and fixed on the horizontal support shaft 4 between the two horizontal axis bearings 2-2; fix the top of the inclinometer tube 7 in the vertical axis fixing hole 3-2 of the inclinometer tube, and the bottom passes through the ground 8 and extends to the approximate landslide surface 9; mesh the vertical gear transmission ridge teeth 2-1 on the vertical gear 2 with the horizontal gear transmission ridge teeth 3-1 on the horizontal gear 3, and the vertical gear 2 rotates with the rotation of the horizontal gear 3; fix the biaxial acceleration sensor 1 on the vertical gear 2, and the biaxial acceleration sensor 1 obtains the rotation angle of the vertical gear 2 on the vertical plane by measuring the gravity acceleration component.

Claims

1. An automatic monitoring device for the change in the orientation of a shallow landslide inclinometer pipe, characterized in that: It comprises a horizontal support shaft (4), a vertical gear (2), a horizontal transmission gear (3), an inclinometer tube (7), and vertical support shafts (6) respectively fixed to both ends of the horizontal support shaft (4), wherein the bottom of the vertical support shaft (6) is anchored at a deep part that is not easily deformed and is close to both sides of the landslide surface (9); The vertical gear (2) is provided with a vertical gear transmission ridge tooth (2-1), the center of the vertical gear (2) is provided with a vertical gear through hole, and a horizontal axis bearing (2-2) is also provided, the outer ring of the horizontal axis bearing (2-2) is fixed to the vertical gear through hole, and the inner ring of the horizontal axis bearing (2-2) is sleeved and fixed on the horizontal support shaft (4) between the two vertical support shafts (6); the vertical gear (2) can rotate around the horizontal axis bearing (2-2); The horizontal gear (3) is provided with a horizontal gear transmission ridge (3-1), and the center of the horizontal gear transmission ridge (3-1) is provided with an inclinometer tube vertical axis fixing hole (3-2); the top of the inclinometer tube (7) is fixed in the inclinometer tube vertical axis fixing hole (3-2), the top is above the ground (8), the bottom passes downward through the approximate landslide surface (9), and the inclinometer tube (7) is perpendicular to the ground (8); the rotation of the inclinometer tube (7) drives the horizontal gear (3) to rotate, and the horizontal gear (3) and the inclinometer tube (7) rotate synchronously; The vertical gear transmission ridge teeth (2-1) on the vertical gear (2) mesh with the horizontal gear transmission ridge teeth (3-1) on the horizontal gear (3), and the vertical gear (2) rotates along with the rotation of the horizontal gear (3); A biaxial acceleration sensor (1) is fixedly mounted on the vertical gear (2), and the biaxial acceleration sensor (1) obtains the rotation angle of the vertical gear (2) on the vertical plane by measuring the gravity acceleration component.

2. The automatic monitoring device for the change in the orientation of the inclinometer tube orifice of a shallow landslide according to claim 1 is characterized in that: The vertical support shaft (6) is sleeved with a vertical protection tube (5) for reducing the influence of external soil deformation on the vertical support shaft (6).

3. The automatic monitoring device for the change in the orientation of the inclinometer tube orifice of a shallow landslide according to claim 1 is characterized in that: The horizontal axis bearing (2-2) is a high-precision, high-rigidity, corrosion-resistant, and non-deflection bearing.

4. The automatic monitoring device for the change in the orientation of the inclinometer tube orifice of a shallow landslide according to claim 1 is characterized in that: The vertical support shaft (6) adopts a reinforced concrete structure.

5. The method for detecting a shallow landslide by an automatic monitoring device for changes in the orientation of an inclinometer pipe orifice according to any one of claims 1 to 4, characterized in that: When the inclinometer tube (7) itself is twisted, the horizontal gear (3) is driven to be twisted, and the twisting of the horizontal gear (3) drives the vertical gear (2) meshing with the horizontal gear (3) to be twisted synchronously. The biaxial acceleration sensor (1) obtains the rotation angle of the vertical gear (2) on the vertical plane by measuring the gravity acceleration component, thereby obtaining the quantitative change of the orientation of the inclinometer tube mouth of the shallow landslide.

6. The method for installing the automatic monitoring device for the position change of the inclinometer pipe orifice of a shallow landslide according to any one of claims 1 to 4, characterized in that: The following steps are involved: 1) Based on the deformation size and range of the upper landslide body of the approximate landslide surface (9) where the inclinometer tube (7) is located, assuming that its annual variation is X, then take 1 / 10 to 1 / 12 of its accuracy as its accuracy; 2) Convert the above accuracy requirements into error limit requirements for horizontal torsion angles according to the diameter of the inclinometer tube (7); 3) According to the above step 2), determine the corresponding instrument technical indicators and the stiffness requirements of the support system; 4) According to the instrument accuracy requirements of step 3), the radius ratio of the vertical gear (2) and the horizontal gear (3) is determined; according to the stiffness requirements, the load of the soil and its own creep are considered to perform structural calculations, and the materials and structures of the support system are optimized. The support system includes a horizontal support shaft (4) and a vertical support shaft (6); 5) Carry out processing, civil construction, installation and commissioning according to the above steps; The two ends of the horizontal support shaft (4) are respectively fixed with vertical support shafts (6), and the bottom of the vertical support shaft (6) is anchored at a deep part that is not easily deformed and close to the lower part of the landslide surface (9); The outer ring of the horizontal axis bearing (2-2) is fixed to the vertical gear through a hole, and the inner ring of the horizontal axis bearing (2-2) is sleeved and fixed on the horizontal support shaft (4) between the two horizontal axis bearings (2-2); The top of the inclinometer tube (7) is fixed in the vertical axis fixing hole (3-2) of the inclinometer tube, and the bottom thereof passes through the ground (8) and extends to the approximate landslide surface (9); The vertical gear transmission ridge teeth (2-1) on the vertical gear (2) are meshed with the horizontal gear transmission ridge teeth (3-1) on the horizontal gear (3), so that the vertical gear (2) rotates along with the rotation of the horizontal gear (3); A biaxial acceleration sensor (1) is fixedly mounted on the vertical gear (2), and the biaxial acceleration sensor (1) obtains the rotation angle of the vertical gear (2) on the vertical plane by measuring the gravity acceleration component.

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