CN110388894B - Roadbed monitoring device - Google Patents
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- CN110388894B CN110388894B CN201910593537.6A CN201910593537A CN110388894B CN 110388894 B CN110388894 B CN 110388894B CN 201910593537 A CN201910593537 A CN 201910593537A CN 110388894 B CN110388894 B CN 110388894B
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 42
- 238000006073 displacement reaction Methods 0.000 claims abstract description 285
- 239000010410 layer Substances 0.000 claims abstract description 181
- 239000002344 surface layer Substances 0.000 claims abstract description 126
- 238000012545 processing Methods 0.000 claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 100
- 238000003860 storage Methods 0.000 claims description 23
- 238000009530 blood pressure measurement Methods 0.000 claims description 9
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- 238000005192 partition Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 36
- 238000010586 diagram Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
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- 239000002356 single layer Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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Abstract
The embodiment of the application provides a roadbed monitoring device, which comprises: the displacement sensors are respectively arranged at each point to be detected of the surface layer and the basal layer of the roadbed, each displacement sensor positioned on the surface layer of the roadbed is connected to form a surface layer measuring line, and each displacement sensor positioned on the basal layer of the roadbed is connected to form a basal layer measuring line; the basal layer reference satellite coordinate sensor is arranged above the first displacement sensor positioned on the basal layer of the roadbed; the basal layer checking satellite coordinate sensor is arranged above the second displacement sensor positioned on the basal layer of the roadbed; the surface layer reference satellite coordinate sensor is arranged above the third displacement sensor positioned on the surface layer of the roadbed; the surface layer checking satellite coordinate sensor is arranged above the fourth displacement sensor positioned on the surface layer of the roadbed; the processing equipment is electrically connected with each displacement sensor and each satellite coordinate sensor; and a power supply device. The roadbed monitoring device provided by the embodiment of the application can improve the accuracy of monitoring the settlement of the roadbed.
Description
Technical Field
The application relates to a roadbed monitoring technology, in particular to a roadbed monitoring device.
Background
The roadbed is the foundation of railway facilities, and the stability of the roadbed determines whether railway operation is safe or not. In the construction of railway facilities and the railway operation process, the roadbed needs to be monitored, and when the roadbed is monitored to be settled, corresponding measures need to be adopted, so that serious influence on the railway operation process is avoided.
At present, a plurality of differential pressure type hydrostatic levels are generally adopted for monitoring the roadbed and distributed at each to-be-measured point of the roadbed so as to monitor the settlement condition of the to-be-measured point. Fig. 1 is a schematic structural diagram of a roadbed monitoring device applied to roadbed monitoring in the related art. As shown in fig. 1, each measuring point and each reference point of the basal layer of the roadbed 10 are provided with a static level 11, a liquid storage tank 12 is also arranged at the reference point, and each static level 11 is communicated with the liquid storage tank 12 through an air pipe and a liquid pipe. The static leveling instrument 11 is also arranged at each measuring point on the surface layer of the roadbed 10, the liquid storage tank 12 is arranged at the measuring point at the end part, and each static leveling instrument 11 is communicated with the liquid storage tank 12 through an air pipe and a liquid pipe. A vertical relay bar 14 is provided between the measuring point at the surface layer end of the roadbed 10 and the measuring point vertically below the same for conducting the reference value of the reference point. Each static level 11 positioned on the surface layer and the basal layer of the roadbed 10 is further electrically connected with an electric box 13 arranged at the datum point through a lead, a processing device, a corresponding connecting wire and other devices are arranged in the electric box 13, the processing device can obtain whether each measuring point is settled or not according to detection signals sent by each static level 11, and the settlement of the roadbed 10 is monitored.
However, in the practical application process, the inventor finds that the monitoring result of the device is not accurate enough and the sedimentation data cannot be accurately represented.
Disclosure of Invention
The embodiment of the application provides a roadbed monitoring device which can improve the accuracy of monitoring the settlement of a roadbed.
An embodiment of a first aspect of the present application provides a roadbed monitoring apparatus, including:
The displacement sensors are respectively arranged at each point to be detected of the surface layer and the basal layer of the roadbed, each displacement sensor positioned on the surface layer of the roadbed is connected to form a surface layer measuring line, and each displacement sensor positioned on the basal layer of the roadbed is connected to form a basal layer measuring line;
the basal layer reference satellite coordinate sensor is used for acquiring the reference coordinates of the point to be detected of the basal layer and is arranged above the first displacement sensor positioned on the basal layer of the roadbed;
The base layer checking satellite coordinate sensor is used for acquiring the checking coordinates of the points to be checked of the base layer and is arranged above the second displacement sensor positioned on the roadbed base layer;
The surface layer reference satellite coordinate sensor is used for acquiring the surface layer reference coordinates of the point to be detected and is arranged above the third displacement sensor positioned on the surface layer of the roadbed;
the surface layer checking satellite coordinate sensor is used for acquiring the checking coordinates of the surface layer to-be-checked points and is arranged above the fourth displacement sensor positioned on the surface layer of the roadbed;
The processing equipment is electrically connected with each displacement sensor and each satellite coordinate sensor;
and the power supply equipment is used for supplying power to each displacement sensor, each satellite coordinate sensor and the processing equipment.
An embodiment of a second aspect of the present application provides a roadbed monitoring apparatus, including:
the displacement sensors are respectively arranged at each point to be detected of the roadbed, and are connected to form a measuring line;
the reference satellite coordinate sensor is used for acquiring reference coordinates of the point to be detected and is arranged above the first displacement sensor;
The checking satellite coordinate sensor is used for acquiring checking coordinates of the point to be detected and is arranged above the second displacement sensor;
The processing equipment is electrically connected with each displacement sensor and each satellite coordinate sensor;
and the power supply equipment is used for supplying power to each displacement sensor, each satellite coordinate sensor and the processing equipment.
According to the technical scheme provided by the embodiment of the application, the displacement sensors are arranged at the surface layer of the roadbed and the to-be-detected point of the basal layer to respectively form the surface layer measuring line and the basal layer measuring line, and the basal layer reference satellite coordinate sensor is arranged above the first displacement sensor positioned on the basal layer of the roadbed and is used for acquiring the reference coordinate of the to-be-detected point of the basal layer so that the rest displacement sensors on the basal layer measuring line take the first displacement sensor as a detection reference; the base layer checking satellite coordinate sensor is arranged above the second displacement sensor positioned on the roadbed base layer and is used for acquiring base layer point to be checked coordinates so as to check the adjustment of the detection values of each displacement sensor on the base layer measuring line; the surface layer reference satellite coordinate sensor is arranged above a third displacement sensor positioned on the surface layer of the roadbed and used for acquiring the reference coordinates of the point to be detected on the surface layer, so that the rest displacement sensors on the surface layer measuring line all take the third displacement sensor as a detection reference; a surface layer checking satellite coordinate sensor is arranged above a fourth displacement sensor positioned on the surface layer of the roadbed and used for acquiring checking coordinates of points to be checked on the surface layer so as to check the adjustment of the detection values of each displacement sensor on the surface layer measuring line; the detection precision of each displacement sensor can be improved, the settlement position and settlement amount of the roadbed can be accurately obtained, and the monitoring precision of the settlement of the whole roadbed is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a roadbed monitoring device in the related art applied to the monitoring of roadbed;
fig. 2 is a schematic structural diagram of a roadbed monitoring device according to an embodiment of the present application applied to roadbed monitoring;
fig. 3 is a schematic diagram of a detection principle of a displacement sensor in the roadbed monitoring device according to the embodiment of the present application;
fig. 4 is a schematic diagram of a detection principle of a displacement sensor in the roadbed monitoring device according to the second embodiment of the present application;
FIG. 5 is an enlarged view of area A of FIG. 2;
FIG. 6 is an enlarged view of region B of FIG. 2;
FIG. 7 is an enlarged view of region C of FIG. 2;
FIG. 8 is an enlarged view of region D of FIG. 2;
Fig. 9 is a schematic diagram of the transmission and flow of the roadbed monitoring data.
Reference numerals:
10-roadbed; 11-a static level; 12-a liquid storage tank; 13-an electrical box; 14-vertical relay bars;
20-a displacement sensor; 21-a liquid tube; 22-trachea; 23-pressure measuring cavity; 24-separator; 25-a differential pressure sensor;
30-a base layer reference satellite coordinate sensor; 31-basal layer reservoir; 32-a basal layer profile tube; 33-a base layer datum platform; 34-equipment box; 35-a power supply device;
40-checking the satellite coordinate sensor by the basal layer; 41-a basal layer checking platform;
50-a surface layer reference satellite coordinate sensor; 51-a surface layer liquid storage tank; 52-surface profile tube; 53-a surface layer reference platform;
60-checking a satellite coordinate sensor on the surface layer; 61-a surface layer checking platform; 62-auxiliary support platform.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
Example 1
The embodiment provides a roadbed monitoring device for monitoring the settlement state of a roadbed. Compared with the traditional monitoring mode, the monitoring device provided by the embodiment has higher monitoring precision.
Roadbeds are roughly classified into two types according to the size: the first roadbed is divided into from bottom to top: the base layer is called as a roadbed base layer; the second type roadbed has lower height and is divided into from bottom to top: the bottom of the bottom layer is called as the basal layer of the roadbed.
Fig. 2 is a schematic structural diagram of a roadbed monitoring device according to an embodiment of the present application applied to roadbed monitoring. In this embodiment, the vertical direction is referred to as: the longitudinal direction of the roadbed 10 is referred to as the longitudinal direction, and the width direction of the roadbed 10 (i.e., the left-right direction in fig. 2) is referred to as the vertical direction: transverse direction.
As shown in fig. 2, the roadbed monitoring device provided in this embodiment includes: a displacement sensor 20, a base layer reference satellite coordinate sensor 30, a base layer checking satellite coordinate sensor 40, a surface layer reference satellite coordinate sensor 50, a surface layer checking satellite coordinate sensor 60, a processing device and a power supply device.
The displacement sensors 20 are plural in number and are respectively disposed at each point to be measured of the surface layer and the basal layer of the roadbed 10. Specifically, a plurality of points to be measured are preset on the surface layer and the base layer according to the soil layer characteristics and the size of the roadbed 10, and a displacement sensor 20 is arranged at each point to be measured. Each displacement sensor 20 positioned on the surface layer of the roadbed 10 is connected to form a surface layer measuring line, and each displacement sensor 20 in the surface layer measuring line is positioned at the same height. The vertical displacement change corresponding to the point to be measured can be obtained through the detection signals of each displacement sensor 20 in the surface layer measuring line, so as to obtain whether the subgrade 10 is settled or not, and specifically at which position the settlement occurs. Each displacement sensor 20 located at the base layer of the roadbed 10 is connected to form a base layer measuring line, and each displacement sensor 20 in the base layer measuring line is located at the same height. The vertical displacement change of the corresponding point to be measured can be obtained by the detection signals of each displacement sensor 20 in the base layer measuring line, so as to obtain whether the subgrade 10 is settled or not and specifically at which position. The displacement sensor 20 may be of the type and type commonly used in the art for measuring subgrade settlement.
Two displacement sensors 20, which are called a first displacement sensor and a second displacement sensor, are set in the surface layer measuring line. A basal layer reference satellite coordinate sensor 30 is arranged above the first displacement sensor, and the basal layer reference satellite coordinate sensor synchronously move; a base layer check satellite coordinate sensor 40 is provided above the second displacement sensor, both of which move in synchronization. The base layer reference satellite coordinate sensor 30 and the base layer checking satellite coordinate sensor 40 may employ sensors commonly used in the art that can communicate with satellites to learn current coordinates, including lateral, longitudinal and vertical coordinates. The coordinates obtained by the base layer reference satellite coordinate sensor 30 are used as base layer point reference coordinates to be measured, and the coordinates obtained by the base layer checking satellite coordinate sensor 40 are used as base layer point checking coordinates.
Whether the displacement of the point to be measured changes or not can be determined according to the coordinates sent by the base layer reference satellite coordinate sensor 30 twice in sequence, for example: if the horizontal coordinates and the longitudinal coordinates sent by two times are the same, but the vertical coordinates differ by 10cm, the point to be measured is settled in the vertical direction, and the settlement amount is 10cm. The base layer reference satellite coordinate sensor 30 and the first displacement sensor synchronously act in the vertical direction, that is, have the same vertical displacement variation, and the vertical settlement obtained by the base layer reference satellite coordinate sensor 30, that is, the vertical settlement of the first displacement sensor, is used as the reference of the other displacement sensors 20 in the base layer measuring line.
Each displacement sensor 20 in the base layer measuring line uses the first displacement sensor as a detection reference, and due to the existence of many factors such as the manufacturing process of the displacement sensor 20, the foundation layer and the like, errors exist between the detection value and the actual value of each displacement sensor 20. In this embodiment, the base layer checking satellite coordinate sensor 40 is used to correct the detection value of each displacement sensor 20 in the base layer measuring line, so as to improve the detection accuracy of each displacement sensor 20. Specifically, the settlement amount of the point to be measured can be known as a true value by checking the vertical coordinates acquired by the satellite coordinate sensor 40 twice in sequence through the substrate layer. The second displacement sensor uses the settlement amount of the first displacement sensor as a reference and the settlement amount detected by the second displacement sensor as a relative value. Since the base layer check satellite coordinate sensor 40 and the second displacement sensor are synchronously moved, that is, have the same settlement amount, the difference between the true value acquired by the base layer check satellite coordinate sensor 40 and the relative value detected by the second displacement sensor is the measurement deviation. Since the remaining displacement sensors 20 in the base layer line are each determined based on the settlement amount of the first displacement sensor, and have the same measurement deviation as the second displacement sensor, the detection values of the displacement sensors 20 in the base layer line are checked for adjustment based on the measurement deviation between the base layer check satellite coordinate sensor 40 and the second displacement sensor, and the detection accuracy of the displacement sensors 20 can be improved.
Similarly, two displacement sensors 20, respectively referred to as a third displacement sensor and a fourth displacement sensor, are set in the surface layer measuring line. A surface layer reference satellite coordinate sensor 50 is arranged above the third displacement sensor, and the surface layer reference satellite coordinate sensor synchronously move; a surface layer check satellite coordinate sensor 60 is provided above the fourth displacement sensor, and both move synchronously. The overlay reference satellite coordinate sensor 50 and overlay verification satellite coordinate sensor 60 may employ sensors commonly used in the art that are capable of communicating with satellites to learn current coordinates, including lateral, longitudinal and vertical coordinates. The coordinates obtained by the surface layer reference satellite coordinate sensor 50 are used as surface layer point reference coordinates, and the coordinates obtained by the surface layer checking satellite coordinate sensor 60 are used as surface layer point checking coordinates.
Whether the displacement of the point to be measured changes or not can be determined according to the coordinates sequentially sent by the surface layer reference satellite coordinate sensor 50. The surface layer reference satellite coordinate sensor 50 and the third displacement sensor synchronously act in the vertical direction, that is, have the same vertical displacement variation, and the vertical settlement obtained by the surface layer reference satellite coordinate sensor 50, that is, the vertical settlement of the third displacement sensor, is used as the reference of the other displacement sensors 20 in the surface layer measuring line.
Each displacement sensor 20 in the surface layer measuring line uses the third displacement sensor as a detection reference, and due to the existence of many factors such as the manufacturing process of the displacement sensor 20, the foundation layer and the like, errors exist between the detection value and the actual value of each displacement sensor 20. In this embodiment, the surface layer checking satellite coordinate sensor 60 is used to correct the detection value of each displacement sensor 20 in the surface layer measuring line, so as to improve the detection accuracy of each displacement sensor 20. Specifically, the settlement amount of the point to be measured can be known as a true value by checking the vertical coordinates acquired by the satellite coordinate sensor 60 twice in sequence through the surface layer. The fourth displacement sensor uses the settlement amount of the third displacement sensor as a reference and the settlement amount detected by the third displacement sensor as a relative value. Since the surface layer checking satellite coordinate sensor 60 and the fourth displacement sensor are synchronously moved, that is, have the same settlement amount, the difference between the true value obtained by the surface layer checking satellite coordinate sensor 60 and the relative value detected by the fourth displacement sensor is the measurement deviation. Since the remaining displacement sensors 20 in the surface layer line are each determined based on the settlement amount of the third displacement sensor, and have the same measurement deviation as the fourth displacement sensor, the detection values of the displacement sensors 20 in the surface layer line are checked for adjustment based on the measurement deviation between the surface layer check satellite coordinate sensor 60 and the fourth displacement sensor, and the detection accuracy of the displacement sensors 20 can be improved.
The processing device is electrically connected to each displacement sensor 20 and each satellite coordinate sensor for receiving the electrical signals from each sensor. The processing device can also be used for processing and calculating the electric signals sent by the sensors so as to obtain the values of the settlement amount, the measurement deviation and the like.
The power supply device is provided at the toe of the roadbed 10 for supplying power to each displacement sensor 20, each satellite coordinate sensor, and the processing device.
According to the technical scheme provided by the embodiment, the displacement sensors are arranged at the positions of the surface layer of the roadbed and the to-be-detected points of the basal layer to form the surface layer measuring line and the basal layer measuring line respectively, and the basal layer reference satellite coordinate sensor is arranged above the first displacement sensor positioned on the basal layer of the roadbed and is used for acquiring the reference coordinates of the to-be-detected points of the basal layer so that the rest displacement sensors on the basal layer measuring line take the first displacement sensor as detection references; the base layer checking satellite coordinate sensor is arranged above the second displacement sensor positioned on the roadbed base layer and is used for acquiring base layer point to be checked coordinates so as to check the adjustment of the detection values of each displacement sensor on the base layer measuring line; the surface layer reference satellite coordinate sensor is arranged above a third displacement sensor positioned on the surface layer of the roadbed and used for acquiring the reference coordinates of the point to be detected on the surface layer, so that the rest displacement sensors on the surface layer measuring line all take the third displacement sensor as a detection reference; a surface layer checking satellite coordinate sensor is arranged above a fourth displacement sensor positioned on the surface layer of the roadbed and used for acquiring checking coordinates of points to be checked on the surface layer so as to check the adjustment of the detection values of each displacement sensor on the surface layer measuring line; the detection precision of each displacement sensor can be improved, the settlement position and settlement amount of the roadbed can be accurately obtained, and the precision of monitoring the settlement of the roadbed is improved.
On the basis of the above technical solution, this embodiment provides a specific implementation manner of a roadbed monitoring device:
As shown in fig. 2, fig. 2 shows a cross section of the roadbed 10, and the left-right direction in fig. 2 is a lateral direction. The base layer of the roadbed 10 is provided with a plurality of displacement sensors 20, and the plurality of displacement sensors 20 are located at the same height and are sequentially arranged along the transverse direction to form base layer measuring lines. The displacement sensor 20 located at the rightmost end of the base layer line is used as a first displacement sensor, and the displacement sensor 20 located at the leftmost end of the base layer line is used as a second displacement sensor. Each displacement sensor 20 in the base layer line is symmetrically arranged with the vertical center line (dotted line in fig. 2) of the roadbed 10 as a symmetry axis.
The surface layer of the roadbed 10 is provided with a plurality of displacement sensors 20, and the displacement sensors 20 are positioned at the same height and are sequentially distributed along the transverse direction to form surface layer measuring lines. The displacement sensor 20 located at the rightmost end of the surface layer measuring line is used as a third displacement sensor, and the displacement sensor 20 located at the leftmost end of the surface layer measuring line is a fourth displacement sensor. Each displacement sensor 20 in the surface layer measuring line is symmetrically arranged with the vertical center line of the roadbed as a symmetry axis. Further, each displacement sensor 20 in the surface layer line corresponds to one displacement sensor 20 in the base layer line in position in the vertical direction.
The displacement sensors may be sensors commonly used in the art for detecting subgrade settlement, and this embodiment provides a specific implementation manner:
Fig. 3 is a schematic diagram of a detection principle of a displacement sensor in a roadbed monitoring device according to an embodiment of the present application, and fig. 4 is a schematic diagram of a detection principle of a displacement sensor in a roadbed monitoring device according to an embodiment of the present application. As shown in fig. 3 and 4, the displacement sensor 20 may be a differential pressure type vertical displacement sensor, and specifically, the displacement sensor 20 includes: a pressure measuring cavity 23, a baffle 24 and a differential pressure sensor 25. Wherein, baffle 24 level sets up in pressure measurement cavity 23, separates the interior space of pressure measurement cavity 23 into upper and lower two parts, and upper portion is as gas chamber and atmosphere intercommunication, and lower part is airtight as the liquid chamber and its inside is full of the pressure measurement liquid.
Specifically, a gas tube 22 may be connected at the vent of each gas chamber, with the gas tube 22 extending outwardly to atmosphere. Or the gas chambers in each displacement sensor in a line may also be in communication with each other via a gas line 22, wherein one or both displacement sensors 20 are in communication with the atmosphere via gas line 22.
The pressure measuring liquid is filled in the sealed liquid chamber, the liquid chambers of the displacement sensors in one measuring line are communicated through the liquid pipe 21, and the pressure measuring liquid can be communicated with the liquid storage tank through the liquid pipe, the liquid level in the liquid storage tank is higher than the liquid level in any one of the displacement sensors, and the liquid level in the liquid storage tank is always kept at a constant height. After the test line is installed, each displacement sensor in the test line is in a measurement initial state, and the measured value is an initial value without sedimentation. The level of the measured liquid in each displacement sensor in one measuring line is the same in the initial state.
The center of the partition plate 24 is provided with a pressure measuring hole in which the differential pressure sensor 25 is disposed. The differential pressure sensor 25 has an upper surface exposed to the gas chamber and a lower surface exposed to the liquid chamber and in contact with the pressurized liquid. The differential pressure sensor 25 senses the pressure difference received from the upper and lower surfaces thereof and outputs a corresponding current signal according to the change of the pressure difference.
Fig. 3 and 4 each illustrate the detection principle of the sensor in detail by taking three displacement sensors 20 as an example. In fig. 3, the three displacement sensors 20 are at the same level, and the liquid chambers are in communication with each other and with the liquid reservoir; the gas chambers are also in communication with each other and with the atmosphere. The height difference between the liquid level of the pressure measuring liquid and the constant liquid level line of the liquid storage tank is H1. In fig. 4, the displacement sensor 20 in the middle is settled, and the height difference between the level of the measured liquid in the middle and the constant level line is: h1+Δh. Due to the communication between the liquid chambers of the three displacement sensors 20, the pressure of the middle liquid chamber increases, the pressure difference between the two ends of the differential pressure sensor 25 increases, and the settlement amount at the measuring point position can be obtained by calculating the increase of the pressure difference.
With the roadbed monitoring device, the liquid chambers of the displacement sensors 20 in the basal layer survey line are communicated through the liquid pipe, and the gas chambers are communicated with the atmosphere through the gas pipe, so that the settlement condition of the roadbed can be monitored. Further, a base layer liquid storage tank is further provided on the base layer of the roadbed 10 and above the first displacement sensor. The basal layer liquid storage tank is communicated with the liquid chamber of each displacement sensor 20 in the basal layer survey line through a liquid pipe.
The liquid chambers of each displacement sensor 20 in the surface layer survey line are communicated through liquid pipes, and each gas chamber is communicated with the atmosphere through air pipes, so that the settlement condition of the roadbed surface layer can be monitored. Further, a surface layer liquid storage tank is further arranged on the surface layer of the roadbed 10 and above the third displacement sensor. The surface reservoir communicates with the liquid chambers of each displacement sensor 20 in the surface survey line via liquid lines.
In addition to the above implementation, the displacement sensor 20 may be implemented in other ways, for example, may be implemented by using the same principle as a static level gauge in the prior art, and the differential pressure sensor inside the displacement sensor may also be a liquid level sensor corresponding to other measurement principles, for example, an ultrasonic sensor, a capacitance sensor, etc., and may be installed according to the specific type selected.
On the basis of the technical scheme, the section pipe can be buried in the roadbed 10, and each displacement sensor 20 is arranged in the section pipe to protect the displacement sensor 20, so that the problem that the displacement sensor 20 is damaged and is not easy to replace due to settlement and deformation of the roadbed is avoided.
The ground section pipe 32 is buried in the ground of the roadbed 10 for the ground section line, and each displacement sensor 20 in the ground section line is provided in the ground section pipe 32. Also located within the base layer profile tube 32 are fluid lines, air lines, electrical leads connected to fluid level sensing devices, and the like connected between each displacement sensor 20 in the base layer profile line. In addition, the liquid pipe, the gas pipe and the electric wires connected with the liquid level detection device which are connected between the displacement sensors 20 can be further protected by adopting a wire pipe, namely: a fluid line, a gas line, and electrical leads connected to the fluid level sensing means, connected between the displacement sensors 20, pass through the line. The tubes in the basal layer measuring line are connected together, which is equivalent to connecting the displacement sensors 20 together in series, so that the displacement sensors 20 can be pulled into the basal layer section tube 32 from one end of the basal layer section tube 32, and the assembly is convenient. And when the displacement sensor 20 in the device fails, the displacement sensors 20 on a plurality of measuring lines can be pulled out of the section tube and pulled into the section tube after replacement, so that the later maintenance, replacement and recovery are facilitated.
For the surface survey line, the surface section pipe 52 is buried in the surface of the roadbed 10, and the surface section pipe 52 may be located entirely in the surface layer, or may be located partly in the surface layer and partly in the bottom layer, specifically, may be determined according to the boundary between the surface layer and the bottom layer. Each displacement sensor 20 in the surface profile line is disposed within a surface profile tube 52. Also located within the surface profile tube 52 are fluid lines, air lines, electrical leads connected between the displacement sensors 20 in the surface profile line, and fluid level sensing devices. In addition, a conduit may be further used to protect the fluid line, air line, and electrical leads connected to the fluid level sensing device that are connected between the displacement sensors 20. The tubes in the surface layer measuring line are connected together, which is equivalent to connecting the displacement sensors 20 together in series, so that the displacement sensors 20 can be pulled into the surface layer section tube 52 from one end of the surface layer section tube 52, and the assembly is convenient.
The base layer profile tube 32 and the surface layer profile tube 52 may be made of a material having a certain strength, for example: polyvinyl chloride (PVC) tubing, and the like. The conduit may be a steel wire bellows, for example.
The two ends of the base layer section pipe 32 penetrate the roadbed 10, and the first displacement sensor and the second displacement sensor are respectively positioned at the two ends of the base layer section pipe 32. Fig. 5 is an enlarged view of area a in fig. 2. As shown in fig. 5, a base layer reference platform 33 is provided below the base layer cross-section pipe 32, and the base layer reference platform 33 may be formed by concrete casting.
The basal layer liquid storage tank 31 is fixed on the basal layer reference platform 33 and is communicated with the liquid chamber in the first displacement sensor through a liquid pipe. The liquid pipe may be connected to the basal layer liquid tank 31 after passing out from the end of the basal layer cross-section pipe 32, or may be formed by punching a hole in the peripheral surface of the basal layer cross-section pipe 32, and the liquid pipe may pass through the hole. The ends of the base layer profile tube 32 are sealed with silicone adhesive.
The base layer reference satellite coordinate sensor 30 is fixed to a base layer liquid tank 31. An equipment box 34 is provided on one side of the base layer reference platform 33, devices such as processing equipment and related connection terminals can be provided in the equipment box 34, and electric wires connected to the liquid level detection device in each displacement sensor 20 provided in the base layer section tube 32 are connected to corresponding connection terminals in the equipment box 34 after passing out from the end of the base layer section tube 32, so that detection data is transmitted to the processing equipment.
A power supply device 35 is provided on one side of the device box 34, and the power supply device 35 may be a solar power generation device, and may supply power to each sensor and each processing device.
Fig. 6 is an enlarged view of region B in fig. 2. As shown in fig. 6, at the left end of the base layer profile tube 32 is a second displacement sensor. A base layer check platform 41 is provided on the outer periphery of the base layer cross-section tube 32, and the base layer check platform 41 may be cast from concrete. The base layer checking satellite coordinate sensor 40 is fixed on the base layer checking platform 41.
Fig. 7 is an enlarged view of region C in fig. 2. As shown in fig. 7, a surface reference platform 53 is provided below the surface profile tube 52 corresponding to the third displacement sensor, and the surface reference platform 53 may be cast of concrete. The surface tank 51 is fixed to the surface reference platform 53 and communicates with the liquid chamber in the third displacement sensor through the liquid pipe 21. The surface reference satellite coordinate sensor 50 is fixed to a surface tank 51.
Fig. 8 is an enlarged view of the region D in fig. 2. As shown in fig. 8, a surface check platform 61 is provided at the periphery of the surface profile tube 52 corresponding to the fourth displacement sensor, and the surface check platform 61 may be cast of concrete. An auxiliary support platform 62 is provided on the surface layer checking platform 61, and the surface layer checking satellite coordinate sensor 60 is fixed on the auxiliary support platform 62. The auxiliary support platform 62 is used to raise the level of the surface check satellite coordinate sensor 60 to expose the subgrade 10 for communication with the satellites. The auxiliary supporting platform 62 and the surface layer checking platform 61 can be formed by integrally casting concrete.
The electrical leads connected to each level detection device in the surface level test line are also connected to the equipment box 34, and data acquisition and processing are performed uniformly by the processing equipment. The processing equipment can send the collected monitoring data to the data processing platform for analysis through a wireless network, and roadbed settlement results are generated. When the sedimentation result is serious, the data processing platform sends early warning information to the client held by the user through the wireless network.
The satellite coordinate sensor is adopted in the embodiment, so that the settlement value of the roadbed along the vertical direction can be obtained, and the horizontal movement of the roadbed can be monitored.
Fig. 9 is a schematic diagram of the transmission and flow of the roadbed monitoring data. As shown in fig. 9, each satellite coordinate sensor communicates with a satellite positioning system, which may be a Global Positioning System (GPS), a beidou satellite positioning system, or other satellite positioning system. The satellite positioning system sends the encrypted control network data to the corresponding satellite coordinate sensor through the encrypted control network, and the satellite coordinate sensor analyzes the encrypted control network data to obtain corresponding datum point data and check point data. And the datum point data and the check point data are sent to an Internet platform through a wireless network for background processing analysis. In addition, sedimentation data and check data detected by each displacement sensor are also sent to an internet platform through a wireless network for background processing analysis, and the internet platform distributes monitoring data and early warning information to the client.
The following describes the assembly process of the roadbed monitoring device in detail:
And after the foundation treatment engineering is finished, the base layer measuring line is installed. Specifically, the original ground is flattened and grooved, and the grooved is communicated with the bottom width of the whole roadbed bed. The multi-section tubes are connected by a sleeve as the base layer section tube 32. The base layer profile tube 32 is then placed into the groove, backfilled with raw earth and compacted. The distance between the adjacent displacement sensors 20 is set according to the position of the to-be-measured point, the liquid pipe 21, the air pipe 22 and the electric wires between the displacement sensors 20 are correspondingly connected, and then the displacement sensors 20 are pulled into the pipe one by one from one end of the basal layer profile pipe 32 until reaching the target position. Finally, both ends of the base layer profile tube 32 are sealed with silicone adhesive.
A basal layer reference platform 33 is formed by casting concrete on one end of the basal layer section tube 32, and a basal layer liquid storage tank 31 and a basal layer reference satellite coordinate sensor 30 are sequentially mounted on the basal layer reference platform 33. The equipment box 34 and the power supply equipment 35 are provided in the vicinity, and the power supply lines and the data lines of the electric wires corresponding to the displacement sensors 20 and the base layer reference satellite coordinate sensor 30 are connected to the equipment box 34 and the power supply equipment 35.
A base layer check platform 41 is formed by casting concrete on the other end of the base layer section tube 32, and then a base layer check satellite coordinate sensor 40 is mounted on the base layer check platform 41.
During the subgrade filling process, the stability of the subgrade 10 is monitored by the base layer survey line. When the settlement value or the horizontal displacement of the basal layer reference platform 33 or the basal layer check platform 41 exceeds the limiting threshold value, the platform sends early warning information to the client so as to remind relevant personnel of stopping construction immediately, analyze and process reasons and avoid instability caused by overlarge deformation of the roadbed 10.
When the roadbed is filled to the surface layer, the surface layer profile tube 52 and the displacement sensor 20 inside the tube are assembled in the same manner as the base layer profile tube 32. Then, a surface reference platform 53 is formed by casting clay at one end of the surface profile tube 52, and then a surface liquid storage tank 51 and a surface reference satellite coordinate sensor 50 are sequentially arranged on the surface reference platform 53. A surface layer check platform 61 and an auxiliary support platform 62 are formed at the other end of the surface layer profile tube 52 by concrete casting, and then a surface layer check satellite coordinate sensor 60 is installed on the auxiliary support platform 62. The electric wires passing through the surface profile tube 52 and the electric wires of the satellite coordinate sensors are laid along the slope of the roadbed 10, and are connected to the equipment box 34 and the power supply equipment 35.
The roadbed monitoring device provided by the embodiment provides settlement reference and data check of the surface layer measuring line and the base layer measuring line and slope horizontal displacement monitoring data through the satellite coordinate sensor, and the data is updated in real time, so that the roadbed monitoring device has higher precision; the displacement sensors distributed at different to-be-measured points are used for monitoring the sedimentation changes of the to-be-measured points, the monitoring precision is high, the automatic checking and early warning functions can be realized, errors and interference existing in artificial retesting are avoided, the method can be widely applied to newly built roadbeds such as railways and highways and existing roadbeds, sedimentation conditions and side slope horizontal displacement can be monitored in the construction period and the operation period of the roadbeds, and reliable guarantee is provided for the stability and the safety of the roadbeds.
In addition, each displacement sensor is arranged in the section pipe in a penetrating way, so that the problem that each displacement sensor is damaged and invalid due to roadbed settlement is avoided, the service life of the displacement sensor is prolonged, and the reliability of monitoring the roadbed is improved. The section pipe is totally closed, so that infiltration and corrosion of rainwater and underground water to internal equipment can be avoided. Under the condition that a certain displacement sensor is damaged, the corresponding measuring line can be pulled out of the profile tube for maintenance or replacement, and the process is more convenient.
The embodiment also provides another implementation mode of the roadbed monitoring device:
For roadbeds of lower heights or affected by other factors, a single layer of survey lines may be used, namely: and monitoring the roadbed by only adopting the base layer survey line in the implementation mode.
Specifically, the roadbed monitoring device includes: the system comprises a plurality of displacement sensors, a reference satellite coordinate sensor, a checking satellite coordinate sensor, processing equipment and power supply equipment. The displacement sensors are respectively arranged at each point to be detected of the roadbed, and the displacement sensors are connected to form a measuring line. One of the sensors in the line is set as a first displacement sensor and the other sensor is set as a second displacement sensor. The reference satellite coordinate sensor is disposed above the first displacement sensor for acquiring current coordinates as reference coordinates by communicating with satellites. The checking satellite coordinate sensor is arranged above the second displacement sensor and is used for acquiring current coordinates as checking coordinates by communicating with satellites.
The processing device is connected with each displacement sensor and each satellite coordinate sensor and is used for processing detection data sent by each displacement sensor, reference coordinates sent by the reference satellite coordinate sensor and check coordinates sent by the check satellite coordinate sensor.
The power supply device is used for supplying power to each displacement sensor, each satellite coordinate sensor and the processing equipment.
Further, each displacement sensor is sequentially arranged along the transverse direction to form a measuring line, and the displacement sensors at two ends of the measuring line are respectively a first displacement sensor and a second displacement sensor. Each displacement sensor is symmetrically distributed by taking the vertical central line of the roadbed as a symmetrical axis.
The displacement sensor is a differential pressure type vertical displacement sensor, and comprises: pressure measurement cavity, baffle and pressure differential inductor. The baffle level sets up in the pressure measurement cavity, separates the inner space of pressure measurement cavity into upper and lower two parts, and the liquid chamber of airtight liquid is filled with pressure measurement liquid in its inside to the lower part, and upper portion is as gas chamber and atmosphere intercommunication. The center of the baffle is provided with a pressure measuring hole, and the differential pressure sensor is arranged in the pressure measuring hole. The upper surface of the differential pressure sensor is exposed in the gas chamber, the lower surface of the differential pressure sensor is contacted with the pressure measuring liquid, and the pressure difference between the upper surface and the lower surface of the differential pressure sensor has a certain corresponding relation with the current signal output by the differential pressure sensor. The differential pressure sensor is electrically connected to the processing device by an electrical lead.
The liquid chambers of the displacement sensors in one measuring line are communicated through liquid pipes, and the gas chambers of the displacement sensors are communicated through air pipes and are communicated with the atmosphere; the liquid storage tank is arranged above the first displacement sensor and is communicated with the liquid chambers of the displacement sensors through liquid pipes, and is used for providing a constant liquid level line.
The section pipe is buried in the roadbed, and each displacement sensor is arranged in the section pipe. The air pipe, the liquid pipe and the electric lead connected with the liquid level detection device which are connected among the displacement sensors pass through the spool, and the spool among the displacement sensors is connected together. The profile tube is buried in the roadbed, so that each displacement sensor can be protected, and convenience in later maintenance is improved.
The two ends of the section pipe penetrate out of the roadbed respectively, and the first displacement sensor and the second displacement sensor are located at the two ends of the section pipe respectively. And a reference platform is arranged below the end part of the section tube corresponding to the first displacement sensor, and a reference satellite coordinate sensor is arranged on the reference platform. The equipment box is arranged on one side of the reference platform, and the processing equipment is arranged in the equipment box. The check platform is arranged below the end part of the section tube corresponding to the second displacement sensor, and the check satellite coordinate sensor is arranged on the check platform.
The implementation of each displacement sensor can refer to the aforementioned base layer measurement line in this embodiment, the implementation of the reference satellite coordinate sensor can refer to the aforementioned base layer reference satellite coordinate sensor 30, and the implementation of the checking satellite coordinate sensor can refer to the aforementioned base layer checking satellite coordinate sensor 40. The monitoring of the roadbed is equivalent to the use of only the aforementioned components located on the roadbed base layer. The profile tube may be referred to the aforementioned base layer profile tube, and the reference platform and the checking platform are respectively referred to the aforementioned base layer reference platform and base layer checking platform, which are not described herein again.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "table", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
While 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (17)
1. A subgrade monitoring device, comprising:
The displacement sensors are respectively arranged at each point to be detected of the surface layer and the basal layer of the roadbed, are connected and are sequentially distributed in the transverse direction to form a surface layer measuring line, and the displacement sensors at the two ends of the surface layer measuring line are respectively a third displacement sensor and a fourth displacement sensor; the displacement sensors positioned at the two ends of the base layer are respectively a first displacement sensor and a second displacement sensor;
A base layer profile pipe embedded in a base layer of the roadbed; each displacement sensor in the basal layer survey line is arranged in the basal layer section tube;
the surface section pipe is buried in the surface of the roadbed; each displacement sensor in the surface layer measuring line is arranged in the surface layer profile tube;
the basal layer reference satellite coordinate sensor is used for acquiring the reference coordinates of the point to be detected of the basal layer and is arranged above the first displacement sensor positioned on the basal layer of the roadbed;
The base layer checking satellite coordinate sensor is used for acquiring the checking coordinates of the points to be checked of the base layer and is arranged above the second displacement sensor positioned on the roadbed base layer;
The surface layer reference satellite coordinate sensor is used for acquiring the surface layer reference coordinates of the point to be detected and is arranged above the third displacement sensor positioned on the surface layer of the roadbed;
the surface layer checking satellite coordinate sensor is used for acquiring the checking coordinates of the surface layer to-be-checked points and is arranged above the fourth displacement sensor positioned on the surface layer of the roadbed;
The processing equipment is electrically connected with each displacement sensor and each satellite coordinate sensor;
and the power supply equipment is used for supplying power to each displacement sensor, each satellite coordinate sensor and the processing equipment.
2. The subgrade monitoring device of claim 1, wherein each displacement sensor in the base layer line is symmetrically arranged with a vertical center line of the subgrade as a symmetry axis, and each displacement sensor in the surface layer line is symmetrically arranged with the vertical center line of the subgrade as a symmetry axis;
each displacement sensor in the surface layer measuring line corresponds to one displacement sensor in the base layer measuring line in position in the vertical direction.
3. The subgrade monitoring device of claim 1, wherein said displacement sensor is a differential pressure type vertical displacement sensor; the displacement sensor includes:
A pressure measurement cavity;
the partition plate is horizontally arranged in the pressure measuring cavity and divides the internal space of the pressure measuring cavity into an upper part and a lower part, the lower part is used as a closed liquid cavity, the inside of the lower part is filled with pressure measuring liquid, and the upper part is used as a gas cavity and communicated with the atmosphere; the center of the partition board is provided with a pressure measuring hole;
The differential pressure sensor is arranged in the pressure measuring hole; the upper surface of the differential pressure sensor is exposed in the gas chamber, and the lower surface of the differential pressure sensor is contacted with the pressure measuring liquid; the differential pressure sensor is electrically connected with the processing device through an electrical lead.
4. A roadbed monitoring device according to claim 3, wherein the liquid chambers of the displacement sensors in the surface line are communicated through a liquid pipe; the liquid chambers of the displacement sensors in the basal layer survey line are communicated through a liquid pipe;
the gas chambers of the displacement sensors in the surface layer survey line are communicated through a gas pipe; the gas chambers of the displacement sensors in the basal layer survey line are communicated through a gas pipe.
5. The subgrade monitoring device of claim 4, further comprising:
A conduit; the air pipe, the liquid pipe and the electric lead connected with the differential pressure sensor which are connected among the displacement sensors pass through the inside of the spool; the conduits in the surface layer line are connected together and the conduits in the base layer line are connected together.
6. The subgrade monitoring device of claim 4, further comprising:
The basal layer liquid storage tank is arranged above the first displacement sensor; the basal layer liquid storage tank is communicated with liquid chambers of each displacement sensor in the basal layer measuring line through a liquid pipe;
the surface layer liquid storage tank is arranged above the third displacement sensor; the surface layer liquid storage tank is communicated with liquid chambers of the displacement sensors in the surface layer measuring line through liquid pipes.
7. The subgrade monitoring device of claim 1 or 5, wherein two ends of the base layer profile tube respectively penetrate out of the subgrade, and a first displacement sensor and a second displacement sensor are respectively positioned at two ends of the base layer profile tube.
8. The roadbed monitoring apparatus according to claim 7, the roadbed monitoring device is characterized by further comprising:
the basal layer reference platform is arranged below the end part of the basal layer section tube corresponding to the first displacement sensor, and the basal layer reference satellite coordinate sensor is arranged on the basal layer reference platform;
The equipment box is arranged on one side of the basal layer reference platform; the processing equipment is arranged in the equipment box;
the base layer checking platform is arranged below the end part of the base layer section tube corresponding to the second displacement sensor, and the base layer checking satellite coordinate sensor is arranged on the base layer checking platform.
9. The subgrade monitoring device of claim 7, further comprising:
The surface layer reference platform is arranged below the position, corresponding to the third displacement sensor, of the surface layer section tube, and the surface layer reference satellite coordinate sensor is arranged on the surface layer reference platform;
The surface layer checking platform is arranged below the position, corresponding to the fourth displacement sensor, of the surface layer section tube, and the surface layer checking satellite coordinate sensor is arranged on the surface layer checking platform.
10. A subgrade monitoring device, comprising:
The displacement sensors are respectively arranged at each point to be detected of the roadbed, are connected and are sequentially distributed along the transverse direction to form a measuring line; the displacement sensors positioned at the two ends of the measuring line are a first displacement sensor and a second displacement sensor respectively;
the section pipe is buried in the roadbed; each displacement sensor is arranged in the section tube;
the reference satellite coordinate sensor is used for acquiring reference coordinates of the point to be detected and is arranged above the first displacement sensor;
The checking satellite coordinate sensor is used for acquiring checking coordinates of the point to be detected and is arranged above the second displacement sensor;
The processing equipment is electrically connected with each displacement sensor and each satellite coordinate sensor;
and the power supply equipment is used for supplying power to each displacement sensor, each satellite coordinate sensor and the processing equipment.
11. The subgrade monitoring device of claim 10, wherein each displacement sensor is symmetrically arranged about a vertical centerline of the subgrade.
12. The subgrade monitoring device of claim 10, wherein said displacement sensor is a differential pressure type vertical displacement sensor; the displacement sensor includes:
A pressure measurement cavity;
the partition plate is horizontally arranged in the pressure measuring cavity and divides the internal space of the pressure measuring cavity into an upper part and a lower part, the lower part is used as a closed liquid cavity, the inside of the lower part is filled with pressure measuring liquid, and the upper part is used as a gas cavity and communicated with the atmosphere; the center of the partition board is provided with a pressure measuring hole;
The differential pressure sensor is arranged in the pressure measuring hole; the upper surface of the differential pressure sensor is exposed in the gas chamber, and the lower surface of the differential pressure sensor is contacted with the pressure measuring liquid; the differential pressure sensor is electrically connected with the processing device through an electrical lead.
13. The subgrade monitoring device of claim 12, wherein the liquid chambers of each displacement sensor in the survey line are in communication via a liquid pipe; the gas chambers of the displacement sensors in the measuring line are communicated through a gas pipe.
14. The subgrade monitoring device of claim 12, further comprising:
a conduit; the air pipe, the liquid pipe and the electric wires connected with the differential pressure sensor which are connected among the displacement sensors pass through the spool, and the spool among the displacement sensors is connected together.
15. The subgrade monitoring device of claim 12, further comprising:
the liquid storage tank is arranged above the first displacement sensor; the liquid storage tank is communicated with the liquid chambers of the displacement sensors through liquid pipes.
16. The subgrade monitoring device of claim 10 or 14, wherein the two ends of the profile tube extend out of the subgrade, respectively, and the first displacement sensor and the second displacement sensor are located at the two ends of the profile tube, respectively.
17. The subgrade monitoring device as set forth in claim 16, the roadbed monitoring device is characterized by further comprising:
The reference platform is arranged below the end part of the section tube corresponding to the first displacement sensor, and the reference satellite coordinate sensor is arranged on the reference platform;
The equipment box is arranged on one side of the reference platform; the processing equipment is arranged in the equipment box;
And the checking platform is arranged below the end part of the section tube corresponding to the second displacement sensor, and the checking satellite coordinate sensor is arranged on the checking platform.
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| CN114855741B (en) * | 2022-04-18 | 2022-12-30 | 中南大学 | Intelligent monitoring method for long-term deformation of railway and station yard subgrade space on complex accumulation body |
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| CN109029349A (en) * | 2018-07-27 | 2018-12-18 | 厦门大学嘉庚学院 | Settlement monitoring device and monitoring method based on GPS positioning |
| CN208805191U (en) * | 2018-09-05 | 2019-04-30 | 中铁第五勘察设计院集团有限公司 | A kind of subgrade settlement automatic monitoring system with benchmark capacity checking device |
| CN209310792U (en) * | 2019-07-03 | 2019-08-27 | 中铁第五勘察设计院集团有限公司 | Roadbed monitoring device |
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| JP5512873B1 (en) * | 2012-11-27 | 2014-06-04 | 一貴 奥田 | Surveying auxiliary device and roadbed inspection method using the device |
| CN202956103U (en) * | 2012-11-28 | 2013-05-29 | 南京润盛建设集团有限公司 | Digital measurement system for roadbed construction and control system |
| CN108680138A (en) * | 2018-05-09 | 2018-10-19 | 中交第公路勘察设计研究院有限公司 | Soft soil foundation roadbed large deformation settlement automatic monitoring system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109029349A (en) * | 2018-07-27 | 2018-12-18 | 厦门大学嘉庚学院 | Settlement monitoring device and monitoring method based on GPS positioning |
| CN208805191U (en) * | 2018-09-05 | 2019-04-30 | 中铁第五勘察设计院集团有限公司 | A kind of subgrade settlement automatic monitoring system with benchmark capacity checking device |
| CN209310792U (en) * | 2019-07-03 | 2019-08-27 | 中铁第五勘察设计院集团有限公司 | Roadbed monitoring device |
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