Monitoring device for width and settlement of ground fracture

Abstract

The utility model relates to a ground fissure width and settlement monitoring device which is characterized in that an adjusting arm is arranged on a supporting table, one end of the adjusting arm is installed on the supporting table through a gallows, the end, away from the supporting table, of the adjusting arm is installed on a measuring structure through a gallows, and a vertical distance measuring rod used for fissure depth measurement is installed at the center of an installation block in a sliding mode; one end, close to the crack, of the vertical distance measuring rod is provided with a measuring head, the two adjusting arms are provided with extension heads, the extension heads are installed on a limiting frame, and the limiting frame enables the inclination angles of the two adjusting arms to be the same in the placing process of the device, so that the positioning head can be placed at the crack when the device is placed, and the positioning head is in contact with the crack; it can be guaranteed that the measuring head makes contact with the two edges of a crack in the measuring process, the situation that the measuring head inclines in the adjusting process of the device is avoided, the positioning head is preferentially placed in the installing process, the positioning head and the measuring head are the same in shape, the adjusting arm is controlled to enable the supporting table to be stably supported on the ground, and fixing of the device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of geological disaster monitoring, in particular to a monitoring device for ground fissure width and settlement. Background Art

[0002] Ground fissures have special engineering geological and hydrogeological characteristics, and ground fissure geological disasters are an important problem that affects all kinds of geological engineering. In the construction of projects related to ground fissures, obtaining key data such as the width, development and settlement of ground fissures is crucial to the safety of the project. At present, the method of obtaining the above data is generally to use relevant instruments for measurement, especially in unstable conditions. The measurement of ground fissures is measured using a simple measuring ruler, which is easy to cause secondary observation errors due to human factors, geological reasons, etc., and the measurement data is single, and because there is no horizontal calibration data that is not accurate enough, it often causes the data to deviate from the actual, causing safety hazards and failing to achieve the expected observation effect.

[0003] Therefore, in view of the above background, the utility model proposes a monitoring device for ground fissure width and settlement, which can simultaneously monitor the initial width of ground fissures and subsequent development and geological settlement data. The device is equipped with a level calibrator to improve the measurement accuracy. By selecting a suitable cone ruler, ground fissures of different sizes can be measured. Considering that the actual project is often complex in terrain and difficult to install instruments, the utility model has a simple structure and is easy to install, so as to achieve effective and accurate measurement of the actual project. Utility Model Content

[0004] The utility model provides a monitoring device for ground fissure width and settlement in order to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the utility model is a monitoring device for ground fissure width and settlement, comprising a support platform for fixing the monitoring device on site, an adjusting arm is arranged on the support platform, one end of the adjusting arm is mounted on the support platform through a gallows, and the end of the adjusting arm away from the support platform is mounted on a measuring structure through the gallows, the measuring structure comprises a mounting block for mounting the adjusting arm, a vertical ranging rod for measuring crack depth is slidably mounted at the center position of the mounting block, a measuring head is mounted on one end of the vertical ranging rod close to the crack, and extension heads are arranged on the two adjusting arms, and the extension heads are mounted on a limit frame.

[0006] Furthermore, a level calibrator and a settlement observation window are provided on the mounting block.

[0007] Furthermore, the measuring head can be replaced with different specifications, and the crack width can be calculated by the scale on the measuring head and the diameter of the cone.

[0008] Furthermore, the adjusting arm comprises a lower rod and an upper rod, the lower rod is mounted on the support platform, the upper rod is mounted on the mounting block, and the lower rod is connected to the upper rod via a threaded sleeve.

[0009] Furthermore, a limit block is provided at one end of the vertical ranging rod away from the measuring head.

[0010] Furthermore, the limiting frame is in an inverted T-shape.

[0011] Furthermore, a friction pad is provided on one side of the support platform placed on the ground.

[0012] The beneficial effects of the utility model are:

[0013] The limit frame of the device can make the inclination angles of the two adjustment arms of the device the same during the placement process. In this way, when the device is placed, the measuring head can be placed at the crack to make the measuring head contact with the crack. At this time, placing the support table can ensure that the measuring head contacts the two edges of the crack during the measurement process, avoiding the device from tilting the measuring head during the adjustment process, and moving the device as a whole. During the installation process, the positioning head is placed first. The positioning head has the same shape as the measuring head and has higher strength. The support table is stably supported on the ground by controlling the adjustment arm, thereby achieving the fixation of the device. After installation, the positioning head is replaced with the measuring head.

[0014] During the measurement process, the device can obtain the initial ground crack width by reading the data on the measuring head, and the device can be left stationary to obtain the crack development. The continuous crack development width can be obtained by reading the data again. The mounting block is provided with a level calibrator and a settlement observation window. During the placement of the measuring head, the level calibrator is observed to determine whether the measuring head is perpendicular to the ground, so as to achieve a more accurate measurement.

[0015] The device adjusts the adjustment arms on both sides clockwise or counterclockwise, and observes the bubble in the level calibrator and the cross in the settlement observation window at the same time, until the bubble is placed in the middle of the level calibrator to achieve horizontal calibration, and the cross is aligned with the settlement observation ruler in the distance to achieve the initial calibration reading of the settlement observation to obtain the initial position H 1 After the above calibration, install a suitable measuring head on a vertical ranging rod, place it in the ground crack, and take readings to obtain the initial crack width b 1 After one observation period, a second reading is taken to read the position H after the settlement. 2 , crack width after development b 2 Through the above data monitoring, we can obtain: the initial width of the ground fissure is b 1 The width of the ground fissure after development is b 2 , the ground fissure settlement value for one cycle is H 2 -H 1The width of the ground fissure is b 2 -b 1 . BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a ground fissure width and settlement monitoring device according to the utility model;

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of a ground fissure width and settlement monitoring device according to the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of an adjusting arm of a ground fissure width and settlement monitoring device according to the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of a mounting block of a ground fissure width and settlement monitoring device according to the utility model;

[0020] In the figure: adjusting arm 1; lower rod 11; threaded sleeve 12; upper rod 13; mounting block 2; vertical distance measuring rod 3; measuring head 4; limit frame 5; support platform 6; extension head 7. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] This embodiment discloses a monitoring device for ground fissure width and settlement, combined with Figure 1-Figure 4As shown, a monitoring device for ground fissure width and settlement includes a support platform 6 for fixing the monitoring device on site, two support platforms 6 are provided, and the two support platforms 6 are placed on both sides of the crack, and an adjustment arm 1 is provided on the support platform 6, one end of the adjustment arm 1 is installed on the support platform 6 through a gallows, and the two adjustment arms 1 are set up in an eight-shaped inclination, and the end of the adjustment arm 1 away from the support platform 6 is installed on the measuring structure through the gallows, and the measuring structure includes a mounting block 2 for mounting the adjustment arm 1, and a clamp for adjusting the crack is slidably installed at the center of the mounting block 2. A vertical ranging rod 3 for measuring the crack depth is provided, and a measuring head 4 is installed at one end of the vertical ranging rod 3 close to the crack. The measuring head 4 is a conical structure, and the measuring head 4 is installed on the vertical ranging rod 3 by means of a thread. The vertical ranging rod 3 and the measuring head 4 are both provided with scales. An extension head 7 is provided on the two adjustment arms 1, and the extension head 7 is installed on a limit frame 5. The limit frame 5 can be used to make the inclination angles of the two adjustment arms 1 of the device the same during the placement process. In this way, when the device is placed, the positioning head can be placed at the crack so that the positioning head contacts the crack. At this time, a support table 6 is placed. It can ensure that the measuring head 4 contacts the two edges of the crack during the measurement process, and avoids the measuring head 4 from tilting during the adjustment process. The device needs to be moved as a whole. During the installation process, the positioning head is placed preferentially. The positioning head has the same shape as the measuring head 4 and has higher strength. The support platform 6 is stably supported on the ground by controlling the adjusting arm 1, so as to achieve the fixation of the device. After the installation, the positioning head is replaced with the measuring head 4. During the measurement process, the initial ground crack width can be obtained by reading the data on the measuring head 4, and the device is left stationary to obtain the crack development. The continuous development width of the crack can be obtained by reading the data again. The mounting block 2 is provided with a horizontal calibration instrument and a settlement observation window. During the placement of the measuring head 4, the measuring head is determined to be perpendicular to the ground by observing the horizontal calibration instrument to achieve a more accurate measurement. The adjusting arms 1 on the left and right sides are continuously adjusted clockwise or counterclockwise, and the bubbles in the horizontal calibration instrument and the cross in the settlement observation window are observed at the same time, until the bubbles are placed in the middle position of the horizontal calibration instrument to achieve horizontal calibration, and the cross is aligned with the settlement observation ruler in the distance to achieve the initial calibration reading of the settlement observation to obtain the initial position H. 1 After the above calibration, a suitable measuring head 4 is mounted on a vertical ranging rod, placed in the ground crack, and read to obtain the initial crack width b. 1 After one observation period, a second reading is taken to read the position H after the settlement. 2 , crack width after development b 2 Through the above data monitoring, we can obtain: the initial width of the ground fissure is b 1 The width of the ground fissure after development is b 2 , the ground fissure settlement value for one cycle is H 2 -H 1 The width of the ground fissure is b2 -b 1 .

[0023] The measuring head 4 can be replaced with different specifications. The crack width can be calculated by the scale on the measuring head 4 and the diameter of the cone. The adjusting arm 1 includes a lower rod 11 and an upper rod 13. The lower rod 11 is installed on the support platform 6, and the upper rod 13 is installed on the mounting block 2. The lower rod 11 and the upper rod 13 are connected by a threaded sleeve 12. The threaded sleeve 12 can be used to rotate the threaded sleeve 12 to make the upper rod 13 and the lower rod 11 move relative to each other, thereby adjusting the overall length of the adjusting arm 1. A limit block is set at one end of the vertical ranging rod 3 away from the measuring head 4. The limit block can prevent the vertical ranging rod 3 from falling off the mounting block 2. The limit frame 5 is an inverted T-shape. The horizontal end is provided with a long groove, in which an extension head 7 is slidably installed, and the vertical end is slidably installed on the mounting seat 2. The limit frame 5 is slidably installed on the mounting seat 2, which can ensure that the horizontal end of the limit frame 2 is always in a horizontal state, thereby ensuring that the two adjustment arms 1 move at the same angle and speed, thereby ensuring that the position of the measuring head 4 is fixed. The support platform 6 is placed on the ground with a friction pad. The material of the friction pad is preferably rubber. Since the rubber material is soft, when there are stones on the ground, the influence of the stones on the placement of the device can be avoided. At the same time, the friction pad can increase the friction between the device and the ground, making the placement of the device more stable.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A monitoring device for ground fissure width and settlement, comprising a support platform (6) for fixing the monitoring device on site, an adjusting arm (1) being arranged on the support platform (6), one end of the adjusting arm (1) being mounted on the support platform (6) via a gallows, and an end of the adjusting arm (1) away from the support platform (6) being mounted on a measuring structure via a gallows, Features: The measuring structure comprises a mounting block (2) for mounting an adjusting arm (1); a vertical distance measuring rod (3) for measuring crack depth is slidably mounted at the center of the mounting block (2); a measuring head (4) is mounted at one end of the vertical distance measuring rod (3) close to the crack; and an extension head (7) is provided on the two adjusting arms (1); the extension head (7) is mounted on a limiting frame (5).

2. A ground fissure width and settlement monitoring device according to claim 1, Features: The mounting block (2) is provided with a level calibrator and a settlement observation window.

3. A ground fissure width and settlement monitoring device according to claim 1, Features: The measuring head (4) can be replaced with different specifications, and the crack width can be calculated by the scale on the measuring head (4) and the diameter of the cone.

4. A ground fissure width and settlement monitoring device according to claim 1, Features: The regulating arm (1) comprises a lower rod (11) and an upper rod (13); the lower rod (11) is mounted on a support platform (6); the upper rod (13) is mounted on a mounting block (2); the lower rod (11) and the upper rod (13) are connected via a threaded sleeve (12).

5. A ground fissure width and settlement monitoring device according to claim 1, Features: A limit block is provided at one end of the vertical distance measuring rod (3) away from the measuring head (4).

6. A ground fissure width and settlement monitoring device according to claim 1, Features: The limiting frame (5) is in an inverted T-shape.

7. A ground fissure width and settlement monitoring device according to claim 1, Features: The side of the support platform (6) placed on the ground is provided with a friction pad.

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