CN210952775U

CN210952775U - Soil body internal deformation monitoring device

Info

Publication number: CN210952775U
Application number: CN201922398937.XU
Authority: CN
Inventors: 方卫华
Original assignee: Nanjing Institute Of Hydrologic Automation Ministry Of Water Resources
Current assignee: Nanjing Institute Of Hydrologic Automation Ministry Of Water Resources; Nanjing Water Conservancy and Hydrology Automatization Institute Ministry of Water Resources
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-07
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a soil body internal deformation monitoring devices, including from the top down location connecting plug, first bearing, second bearing, torsion sensor that connect gradually, take triaxial accelerometer and built-in temperature to revise the rod-type displacement meter of sensor to and anchor and the connection socket of lower extreme. The upper end of the first bearing is connected with the positioning connecting plug, and the lower end of the first bearing is connected with the second bearing. The lower end of the second bearing is connected with a torsion sensor, and the lower part of the torsion sensor is connected with a displacement meter. Through the constraint of the bidirectional bearings with mutually vertical axes, the instrument can accurately measure the torsion between the upper and lower connecting plugs and the jacks; the triaxial accelerometer is used for measuring the orientation of the rod type displacement meter. The full-element automatic monitoring instrument can measure the deformation of all elements of stretching, shearing and twisting by combining the deformation of all dimensions and temperature correction; when the multi-stage end-to-end connection is adopted, automatic monitoring of deep multipoint displacement of the soil body can be realized.

Description

Soil body internal deformation monitoring device

Technical Field

The utility model relates to a soil mass internal deformation monitoring devices belongs to underground and geotechnical engineering (including dam and side slope etc.) inside deformation monitoring technology field.

Background

The existing soil body internal deformation monitoring instruments comprise rod-type axis displacement meters, inclinometers/inclinometers, settlement monitoring, tension line type horizontal displacement meters and other monitoring instruments, the monitoring instruments can only respectively monitor one part of complex deformation in the soil body, the rod-type axis displacement meters can only measure the displacement in the rod axis direction, cannot measure the direction of the rod axis and cannot measure the rotation taking the rod axis as a rotating shaft, the inclinometers/inclinometers comprise movable inclinometers and fixed inclinometers, the included angle change between the axis of the measuring instrument and the gravity direction can only be measured, and the deformation in the axis direction and the torsion around the axis cannot be monitored. The settlement monitor mainly utilizes the principle of communicating pipes, can only monitor settlement in the vertical direction, and can not measure deformation in the horizontal direction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome among the prior art an instrument can only monitor the inside one-dimensional deformation of the soil body, and can not monitor the not enough that other dimension warp, provide a soil body internal deformation monitoring devices.

The utility model provides a soil body internal deformation monitoring devices, includes location connecting plug, first bearing, second bearing, torsion sensor and the displacement meter that from the top down connected gradually, location connecting plug is connected to the upper end of first bearing, and the lower extreme is connected with the second bearing, the second bearing lower extreme is connected with torsion sensor, the torsion sensor lower part is connected with the displacement meter, the external fixation of displacement meter has the accelerometer.

Preferably, the displacement meter includes displacement meter shell and displacement meter slide bar, displacement meter shell inboard is equipped with prevents turning round the constant head tank, the displacement meter slide bar be equipped with prevent turning round the direction arch of constant head tank adaptation.

Preferably, the bottom of the sliding rod of the displacement meter is connected with a soil anchoring device.

Preferably, the soil anchoring device is internally provided with a connecting and fixing socket.

Preferably, a rubber waterproof sealing ring is arranged at the joint of the displacement meter sliding rod and the displacement meter shell.

Preferably, the displacement meter sliding rod is made of a light corrosion-resistant composite material.

Preferably, the rotating shaft of the torsion sensor is connected with the displacement meter, and the shell of the torsion sensor is connected with the upper end of the displacement meter.

Preferably, the rotating shaft of the first bearing is connected with a connecting plug, and the outer part of the first bearing is connected with the inner part of the second bearing.

Preferably, the second bearing rotating shaft is connected with the first bearing, and the outer part of the second bearing is connected with the torsion sensor.

Preferably, the first bearing and the second bearing have rotation axes perpendicular to each other and orthogonal to the displacement meter axis, the axis of the torsion sensor is aligned with the displacement meter axis, and the rotation plane of the torsion sensor is perpendicular to the instrument axis.

Compared with the prior art, the utility model discloses the beneficial effect who reaches: the utility model can measure the deformation and torsion of each direction under the ground through the matching of the first bearing and the second bearing; the utility model can collect the displacement distance generated in the soil through the arrangement of the displacement device; the full-element automatic monitoring instrument can measure the deformation of all elements of stretching, shearing and twisting by integrating axial deformation and temperature correction, and can realize the multi-point displacement monitoring of the deep layer of the soil body when adopting multi-stage end-to-end connection.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic sectional view of the displacement meter a-a according to the present invention.

In the figure: 1. positioning the connecting plug; 2. a first bearing; 3. a displacement meter; 4. an anti-twist positioning slot; 5. a displacement meter slide bar; 6. a soil anchoring device; 8. an accelerometer; 9. a torsion sensor; 10. a second bearing; 11. a ground surface; 12. a displacement meter housing; 13. and a guide projection.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1-2, a soil internal deformation monitoring device is disclosed, which comprises a positioning connection plug 1, a first bearing 2, a second bearing 10, a torsion sensor 9 and a displacement meter 3 from top to bottom, wherein one end of the first bearing 2 is connected with the positioning connection plug 1, the positioning connection plug 1 is used for fixing the ground 11, the rotating shaft of the first bearing 2 is connected with the connection plug 1, the outer part of the first bearing 2 is connected with the inner part of the second bearing 10 for realizing the left-right swing of the lower device on a plane vertical to the X direction, the second bearing 10 is connected with the top of the torsion sensor 9, the rotating shaft of the second bearing 10 is connected with the outer part of the first bearing 2, the outer part of the second bearing 10 is connected with the torsion sensor 9, referring to fig. 1, the lower device is realized to swing back and forth on the plane vertical to the Y direction, the rotating shaft of the torsion sensor 9 is connected with the second bearing 10, the shell of the torsion sensor 9 is connected with the upper end of the displacement meter 3, so that the torsion measurement of the lower part of the torsion sensor 9 relative to the upper connecting device around the central line axis of the device is realized. An accelerometer 8 is fixed outside the displacement meter 3, the accelerometer 8 is a three-axis accelerometer and is used for measuring the orientation of a rod-type displacement meter, the displacement meter 3 is used for detecting the displacement distance between the upper part and the lower part inside a soil body, in addition, the rotating shafts of the first bearing 2 and the second bearing 10 are mutually perpendicular and are orthogonal to the axis of the displacement device, the axis of the torsion sensor 9 and the axis of the displacement meter 3 are on the same straight line, and the rotating plane of the torsion sensor is perpendicular to the axis of the instrument.

In this embodiment, displacement meter 3 includes displacement meter shell 12 and displacement meter slide bar 5, displacement meter shell 12 inboard is equipped with prevents turning round constant head tank 4, and displacement meter shell 12's internally mounted has the temperature to revise the sensor, through the distance that displacement meter slide bar 5 removed of temperature correction sensor monitoring, displacement meter slide bar 5 is equipped with and prevents turning round the direction arch 13 of constant head tank 4 adaptation. The matching of the anti-torsion positioning groove 4 and the guide bulge 13 ensures that the displacement meter sliding rod 5 cannot be twisted, the displacement meter sliding rod 5 can only translate up and down along the axis, and the accurate measurement of the movement of the instrument in the central axis direction between the two points of the positioning connecting plug 1 and the soil body anchoring device 6 is realized by adopting the non-deformation light corrosion-resistant composite material.

In this embodiment, displacement meter slide bar 5 bottom is connected with soil body anchor 6, and soil body anchor 6 is equipped with built-in connection fixed socket, conveniently is connected with location connecting plug 1 and utilizes being connected between the device, realizes the measurement of the different degree of depth, through the connection of location connecting plug 1 with soil body anchor 6, has increased the commonality of device.

In this embodiment, a rubber waterproof sealing ring is arranged at the joint of the displacement meter sliding rod 5 and the displacement meter shell 12, so that the tightness and the waterproofness of the device are improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a soil body internal deformation monitoring devices, its characterized in that includes location connecting plug (1), first bearing (2), second bearing (10), torsion sensor (9) and displacement meter (3) that from the top down connected gradually, location connecting plug (1) is connected to the upper end of first bearing (2), and the lower extreme is connected with second bearing (10), second bearing (10) lower extreme is connected with torsion sensor (9), torsion sensor (9) lower part is connected with displacement meter (3), the external fixation of displacement meter (3) has accelerometer (8).

2. The soil internal deformation monitoring device according to claim 1, wherein the displacement meter (3) comprises a displacement meter housing (12) and a displacement meter sliding rod (5), wherein the displacement meter housing (12) is provided with an anti-torsion positioning groove (4) on the inner side, and the displacement meter sliding rod (5) is provided with a guide projection (13) matched with the anti-torsion positioning groove (4).

3. The soil internal deformation monitoring device according to claim 2, wherein the bottom of the displacement meter sliding rod (5) is connected with a soil anchoring device (6).

4. A soil mass internal deformation monitoring device according to claim 3, wherein the soil mass anchoring device (6) is internally provided with a connection fixing socket.

5. The soil internal deformation monitoring device according to claim 2, wherein a rubber waterproof sealing ring is arranged at the joint of the displacement meter sliding rod (5) and the displacement meter shell (12).

6. The soil internal deformation monitoring device according to claim 2, wherein the displacement meter sliding rod (5) is made of light corrosion-resistant composite material.

7. A soil internal deformation monitoring device according to claim 2, characterized in that the rotation shaft of the torsion sensor (9) is connected with the second bearing (10), and the housing of the torsion sensor (9) is connected with the upper end of the displacement meter (3).

8. A soil internal deformation monitoring device according to claim 1, wherein the rotating shaft of the first bearing (2) is connected with a connecting plug (1), and the outer part of the first bearing (2) is connected with the inner part of the second bearing (10).

9. A soil internal deformation monitoring device according to claim 1, wherein the second bearing (10) is connected to the first bearing (2) via an internal rotation shaft, and the second bearing (10) is connected to the torsion sensor (9) via an external rotation shaft.

10. A soil internal deformation monitoring device according to claim 1, wherein the first bearing (2) and the second bearing (10) are rotating shafts perpendicular to each other and to the axis of the displacement meter (3), the axis of the torsion sensor (9) is in line with the axis of the displacement meter (3), and the rotating plane is perpendicular to the axis of the apparatus.