CN113340263B - Displacement monitoring device and displacement monitoring method - Google Patents
Displacement monitoring device and displacement monitoring method Download PDFInfo
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- CN113340263B CN113340263B CN202110632340.6A CN202110632340A CN113340263B CN 113340263 B CN113340263 B CN 113340263B CN 202110632340 A CN202110632340 A CN 202110632340A CN 113340263 B CN113340263 B CN 113340263B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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Abstract
The invention belongs to the technical field of civil engineering, and particularly relates to a displacement monitoring device and a displacement monitoring method. Displacement monitoring devices wherein includes first fixed disk, second fixed disk and telescopic link, the second fixed disk sets up under first fixed disk, the upper end of telescopic link is rotationally connected at the middle part of first fixed disk, the lower extreme of telescopic link is rotationally connected at the middle part of second fixed disk, the lower extreme of telescopic link relatively is flexible, the equal fixed connection of three dead lever lower extreme is on the second fixed disk, three dead lever sets up the global outside at the telescopic link respectively, the upper end of every dead lever all corresponds and is provided with a force transducer, every force transducer all corresponds and connects on the pole body of telescopic link through an elastic component. The invention can quickly obtain the axial deformation and the dislocation deformation in the rock mass so as to comprehensively obtain the comprehensive deformation information in the rock mass, and has simple structure, convenient operation and good practicability.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a displacement monitoring device and a displacement monitoring method.
Background
Monitoring of deformation inside a rock mass is an important method for mastering rock mass response and judging rock mass stability, and is also an important basis for taking reinforcement measures on engineering rock masses. The existing monitoring of the internal deformation of the rock mass is realized by installing a monitoring device in a drill hole, and the monitoring device comprises a multipoint displacement meter, a fiber grating, an array type displacement meter, a sliding micrometer and the like.
The monitoring point quantity of multipoint displacement meter is more with 4 ~ 6 points, and when the rock mass of each anchor point of drilling produced the displacement, the reference end of drilling was passed to through the transmission pole, and the displacement volume of each point all can be measured at the reference end. The method is only used for monitoring the deformation of the bedrock at different depths along the axial direction of the drill hole, the sliding direction is difficult to accurately judge, the point distance is large, the internal deformation of the rock body cannot be finely obtained, and the influence of field conditions is large. The slide micrometer can only measure the strain and axial displacement distribution along the direction of the measuring line, and the installation and test operations are complex and cannot be monitored continuously.
The fiber grating sensing technology uses the photosensitivity of the fiber material, i.e. the interaction between the external incident photons and the fiber core causes the permanent change of the refractive index of the latter, but this method must compensate the temperature when measuring the strain, and only generates axial deformation.
The array displacement meter adopts a micro-electro-mechanical sensing mode and an array calculation principle, although a continuous deformation curve can be obtained in real time, when the displacement meter is installed, the displacement meter needs to be arranged in a PVC sleeve, and each measuring point of the displacement meter is not fixed, so that the displacement meter can only be used for measuring inclination or sedimentation deformation, and cannot measure the relative change of each point in a rock mass.
In the prior art, although the axial deformation and the dislocation deformation of the rock mass can be measured respectively, the comprehensive monitoring is not realized, and therefore, how to obtain the comprehensive deformation information inside the rock mass is a technical problem which needs to be solved urgently in the prior art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a displacement monitoring device and a displacement monitoring method, which aim to solve the technical problem that comprehensive deformation information of the interior of a rock body cannot be obtained in the prior art.
The technical scheme of the invention is as follows:
in one aspect, the present invention provides a displacement monitoring device, including:
a first fixed disk;
the second fixed disk is arranged right below the first fixed disk;
the upper end of the telescopic rod is rotatably connected to the middle part of the first fixed disk, the lower end of the telescopic rod is rotatably connected to the middle part of the second fixed disk, and the upper end of the telescopic rod can extend and retract relative to the lower end of the telescopic rod;
the fixing device comprises three fixing rods, wherein the lower ends of the fixing rods are fixedly connected to the second fixing disk, the fixing rods are arranged on the outer side of the circumferential surface of the telescopic rod respectively, each fixing rod is provided with a force sensor in a corresponding mode, and each force sensor is connected to the rod body of the telescopic rod through an elastic piece in a corresponding mode.
Furthermore, the upper end of the telescopic rod is rotatably connected to the middle of the first fixed disk through a spherical hinge, and the lower end of the telescopic rod is also rotatably connected to the middle of the second fixed disk through a spherical hinge.
Furthermore, the lower ends of the three fixing rods are anchored on the second fixing disc.
Further, three the dead lever is first dead lever, second dead lever and third dead lever respectively, wherein:
the lower ends of the first fixing rod and the second fixing rod are fixedly connected to the second fixing disc, the first fixing rod and the second fixing rod are symmetrically arranged on two sides of the telescopic rod, the upper ends of the two first fixing rods and the upper end of the second fixing rod are respectively and correspondingly provided with a force sensor, and each force sensor is correspondingly connected to the rod body of the telescopic rod through an elastic piece;
the lower end of the third fixing rod is fixedly connected to the second fixing disk, and the plane where the central shaft of the third fixing rod and the central shaft of the telescopic rod are located is located on the vertical plane of the connecting line of the central shaft of the first fixing rod and the central shaft of the second fixing rod; the upper end of the third fixed rod is also provided with a force sensor, and the force sensor on the third fixed rod is also connected to the rod body of the telescopic rod through an elastic piece.
Furthermore, the distances from the central axes of the three fixing rods, the second fixing rod and the third fixing rod to the central axis of the telescopic rod are consistent.
In another aspect, the present invention further provides a displacement monitoring method, where the displacement monitoring method includes:
installing the displacement monitoring device in a drill hole, wherein a first fixed disc and a second fixed disc of the displacement monitoring device are respectively fixed in the drill hole;
after the displacement monitoring device is placed in the drilling hole for a preset time, the deformation of the first fixed disc and the second fixed disc along the axial direction of the drilling hole is obtained according to the telescopic change of the telescopic rod, the telescopic deformation of each elastic piece is obtained through the monitoring value of the miniature force sensor, and the dislocation deformation of the central points of the first fixed disc and the second fixed disc is obtained through the telescopic deformation of each elastic piece, so that the comprehensive deformation information of the interior of the rock body is obtained.
The beneficial effects of the invention at least comprise:
when the displacement monitoring device provided by the invention is used for monitoring the displacement in the rock mass, the axial deformation and the dislocation deformation in the rock mass can be quickly obtained so as to comprehensively obtain the comprehensive deformation information in the rock mass, and the device has the advantages of simple structure, convenience in operation and good practicability.
Drawings
Fig. 1 is a schematic structural diagram of a displacement monitoring device according to the present embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
fig. 4 is a schematic view of displacement deformation.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
The embodiment provides a displacement monitoring device and a displacement monitoring method, which aim to solve the technical problem that comprehensive deformation information in a rock body cannot be obtained in the prior art.
First, the present embodiment discloses a displacement monitoring device. Fig. 1 is a schematic structural diagram of a displacement monitoring device of this embodiment, fig. 2 is a front view of fig. 1, fig. 3 is a side view of fig. 1, and with reference to fig. 1 to 3, the displacement monitoring device of this embodiment includes a first fixed disk 1, a second fixed disk 7, an expansion rod 2, and three fixing rods.
Referring to fig. 1 to 3, in this embodiment, the second fixed disk 7 is disposed directly below the first fixed disk 1, the upper end of the telescopic rod 2 is rotatably connected to the middle of the first fixed disk 1, the lower end of the telescopic rod 2 is rotatably connected to the middle of the second fixed disk 7, and the upper end of the telescopic rod 2 is capable of extending and retracting relative to the lower end of the telescopic rod 2.
In this embodiment, the first fixed disk 1 and the second fixed disk 7 may be selected to be spherical and consistent with the inner diameter of a drilled hole drilled in a rock body, so that the first fixed disk 1 and the second fixed disk 7 may be fixedly disposed in the drilled hole in an interference fit manner. The telescopic link of this embodiment can include two body of rods, and two body of rods are down the body of rod and go up the body of rod respectively, and the lower extreme of the body of rod is connected at the middle part of first fixed disk 1 down, and the lower extreme slidable ground of going up the body of rod sets up in the upper end of the body of rod down, and the upper end of going up the body of rod is connected at the middle part of second fixed disk 7.
Referring to fig. 1 to 3, the upper end of the telescopic rod 2 of the present embodiment may be rotatably connected to the middle of the first fixing plate 1 by a ball hinge 6, and the lower end of the telescopic rod 2 may also be rotatably connected to the middle of the second fixing plate 7 by a ball hinge. The ball joint is a common rotatable connecting mechanism, and the embodiment does not limit the specific structure thereof.
With reference to fig. 1-3, in this embodiment, the lower ends of three fixing rods are all fixedly connected to the second fixing plate 7, the three fixing rods are respectively disposed outside the circumferential surface of the telescopic rod 2, the upper end of each fixing rod is correspondingly provided with a force sensor 4, and each force sensor 4 is correspondingly connected to the rod body of the telescopic rod 2 through an elastic member 3. When the device is installed in the drilling, because the dislocation of rock mass warp, can drive two fixed disks and remove, and then can drive the slope of telescopic link 2, can drive elastic component 3 flexible then, and the deformation force that elastic component 3 produced can be acquireed to the force sensor 4 that corresponds with elastic component 3, and then can deduce the flexible deflection of corresponding elastic component 3.
The lower ends of the three fixing rods of this embodiment are all anchored on the second fixing disk 7, so that the three fixing rods of this embodiment are all vertically connected on the second fixing disk 7.
Further, referring to fig. 1 to 3, the three fixing bars of the present embodiment are a first fixing bar 5, a second fixing bar 9 and a third fixing bar 8, respectively, wherein: the lower ends of the first fixing rod 5 and the second fixing rod 9 are fixedly connected to the second fixing disc 7, the first fixing rod 5 and the second fixing rod 9 are symmetrically arranged on two sides of the telescopic rod 2, the upper ends of the two first fixing rods 5 and the upper end of the second fixing rod 9 are respectively and correspondingly provided with a force sensor 4, and each force sensor 4 is correspondingly connected to the rod body of the telescopic rod 2 through an elastic piece 3; the lower end of the third fixing rod 8 is fixedly connected to the second fixing disk 7, a plane where a central shaft of the third fixing rod 8 and a central shaft of the telescopic rod 2 are located is located on a vertical plane between a central shaft of the first fixing rod 5 and a central shaft connecting line of the second fixing rod 9, the upper end of the third fixing rod 8 is also provided with a force sensor 4, and the force sensor 4 on the third fixing rod 8 is also connected to a rod body of the telescopic rod 2 through an elastic part 3.
Because the plane that the center pin of third dead lever 8 and the center pin of telescopic link 2 place of this embodiment is located the central axis of first dead lever 5 and the middle vertical plane of the center pin line of second dead lever 9, make three dead lever can be the isosceles triangle and set up on second fixed disk 7, in order to make things convenient for the follow-up calculation.
Further, with reference to fig. 1 to 3, in this embodiment, distances from the central axes of the first fixing rod 5, the second fixing rod 9 and the third fixing rod 8 to the central axis of the telescopic rod 2 are the same, which is also convenient for subsequent calculation.
Based on the displacement monitoring device, the present embodiment further provides a displacement monitoring method, where the displacement monitoring method includes:
s1: installing the displacement monitoring device in a drill hole, wherein a first fixed disc 1 and a second fixed disc 7 of the displacement monitoring device are respectively fixed in the drill hole;
s2: after the displacement monitoring device is placed in a drill hole for a preset time, a displacement deformation schematic diagram shown in fig. 4 is obtained, deformation of the first fixed disk 1 and the second fixed disk 7 along the axial direction of the drill hole is obtained according to the telescopic change of the telescopic rod 2, the telescopic deformation amount of each elastic piece 3 is obtained through the monitoring value of the micro force sensor, the dislocation deformation of the central points of the first fixed disk 1 and the second fixed disk 7 is obtained through the telescopic deformation amount of each elastic piece 3, and therefore comprehensive deformation information inside the rock body is obtained.
To sum up, carry out displacement monitoring time measuring through the displacement monitoring device that this embodiment provided to the rock mass is inside, can obtain the inside axial deformation of rock mass and the dislocation deformation fast to obtain the inside comprehensive deformation information of rock mass comprehensively, and simple structure, convenient operation has fine practicality.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A displacement monitoring device, comprising:
a first fixed disk (1);
the second fixed disk (7), the second fixed disk (7) is arranged under the first fixed disk (1);
the upper end of the telescopic rod (2) is rotatably connected to the middle of the first fixed disk (1), the lower end of the telescopic rod is rotatably connected to the middle of the second fixed disk (7), and the upper end of the telescopic rod (2) can stretch relative to the lower end of the telescopic rod (2);
the lower ends of the three fixing rods are fixedly connected to the second fixing disc (7), the three fixing rods are respectively arranged on the outer side of the peripheral surface of the telescopic rod (2), the upper end of each fixing rod is correspondingly provided with a force sensor (4), and each force sensor (4) is correspondingly connected to the rod body of the telescopic rod (2) through an elastic piece (3);
three the dead lever is first dead lever (5), second dead lever (9) and third dead lever (8) respectively, wherein:
the lower ends of the first fixing rod (5) and the second fixing rod (9) are fixedly connected to the second fixing disc (7), the first fixing rod (5) and the second fixing rod (9) are symmetrically arranged on two sides of the telescopic rod (2), the upper ends of the two first fixing rods (5) and the upper end of the second fixing rod (9) are respectively and correspondingly provided with a force sensor (4), and each force sensor (4) is correspondingly connected to the rod body of the telescopic rod (2) through an elastic piece (3);
the lower end of the third fixing rod (8) is fixedly connected to the second fixing disk (7), and the plane where the central shaft of the third fixing rod (8) and the central shaft of the telescopic rod (2) are located is located on the middle vertical plane of the connecting line of the central shaft of the first fixing rod (5) and the central shaft of the second fixing rod (9); the upper end of the third fixing rod (8) is also provided with a force sensor (4), and the force sensor (4) on the third fixing rod (8) is also connected to the rod body of the telescopic rod (2) through an elastic part (3).
2. The displacement monitoring device according to claim 1, characterized in that the upper end of the telescopic rod (2) is rotatably connected to the middle of the first stationary disk (1) by means of a spherical hinge (6), and the lower end of the telescopic rod is also rotatably connected to the middle of the second stationary disk (7) by means of a spherical hinge.
3. Displacement monitoring device according to claim 1, characterised in that the lower ends of the three fixing rods are each anchored on the second fixing disc (7).
4. The displacement monitoring device according to claim 1, characterized in that the central axes of the first, second and third fixing bars (5, 9, 8) are at a uniform distance from the central axis of the telescopic rod (2).
5. A displacement monitoring method, characterized in that the displacement monitoring method comprises:
installing the displacement monitoring device of any one of claims 1-4 in a borehole, wherein the first stationary disc (1) and the second stationary disc (7) of the displacement monitoring device are fixed in the borehole, respectively;
the displacement monitoring device is in place the reservation time after in the drilling, according to the flexible change of telescopic link (2) obtains first fixed disk (1) and second fixed disk (7) and follows drilling axial deformation, obtains each through miniature force transducer's monitoring value the flexible deflection of elastic component (3), through each the flexible deflection of elastic component (3) obtains the diastrophism deformation of the central point of first fixed disk (1) and second fixed disk (7) to this obtains the inside comprehensive deformation information of rock mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110632340.6A CN113340263B (en) | 2021-06-07 | 2021-06-07 | Displacement monitoring device and displacement monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632340.6A CN113340263B (en) | 2021-06-07 | 2021-06-07 | Displacement monitoring device and displacement monitoring method |
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| Publication Number | Publication Date |
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| CN113340263A CN113340263A (en) | 2021-09-03 |
| CN113340263B true CN113340263B (en) | 2022-09-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105910908A (en) * | 2016-07-06 | 2016-08-31 | 河南理工大学 | Device and measuring method for measuring direct stretching mechanical parameter of rock |
| DE102017216420A1 (en) * | 2017-09-15 | 2019-03-21 | Robert Bosch Gmbh | Device for determining a deflection of a movably arranged measuring object |
| CN107727063B (en) * | 2017-11-08 | 2019-08-23 | 中国科学院广州能源研究所 | The real time monitoring apparatus of seabed deformation in a kind of hydrate recovery process |
| CN208619140U (en) * | 2018-07-17 | 2019-03-19 | 天地科技股份有限公司 | Nut and anchor pole |
| CN109163985B (en) * | 2018-08-15 | 2020-09-08 | 三峡大学 | In-situ testing device and method for testing shear strength and long-term creep deformation of rock sample |
| CN112066867A (en) * | 2020-09-04 | 2020-12-11 | 中国科学院武汉岩土力学研究所 | Comprehensive dislocation and opening monitoring device and method |
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