Goaf power transmission line tower settlement attitude monitoring system and method

Abstract

The invention discloses a goaf power transmission line tower settlement attitude monitoring system and method, and the system comprises a tilt angle sensor which is disposed at the top of a goaf power transmission tower; the tilt angle sensor is used for measuring the tilt angle of the goaf power transmission tower; the static force level gauge is mounted at the tower foot of the goaf power transmission tower; the static leveling instrument is used for monitoring settlement data of a goaf power transmission tower body; the output ends of the tilt angle sensor and the static force level gauge are connected with a control device, and the control device is used for monitoring collected data of the tilt angle sensor and the static force level gauge. On-line monitoring of settlement faults of the power transmission tower is achieved, follow-up tower leveling processing is carried out according to obtained data, the defects of traditional manual inspection are overcome, and accidents caused by settlement of the power transmission tower are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission line tower monitoring, and in particular relates to a system and method for monitoring the settlement posture of a transmission line tower in a goaf area. Background Art

[0002] Most coal mining is done in underground mines. Artificial mining creates huge "holes" under the surface, which are called "goafs". This mining method will inevitably cause natural disasters such as surface collapse, cracking, landslides and mudslides in mountainous areas. With the vigorous development of UHV transmission technology, many high-voltage transmission towers are inevitably built above goafs, which will inevitably have a great impact on the safety of high-voltage transmission towers and tower bases. Such as twisting, subsidence, and translation of tower bases, tilting and lodging of transmission towers, changes in tension and sag of transmission lines, etc. After a period of time, coal goafs will collapse. Comprehensive management of coal mining subsidence areas is generally considered to be a world problem. The large-scale reinforcement of goafs on power supply lines is too large. In order to eliminate the safety hazards of high-voltage transmission lines in designated coal mining areas and ensure the normal transportation of coal, it is necessary to transform and monitor the relevant lines and tower foundations affected by coal mining while taking into account economic efficiency.

[0003] The buildings above the goaf are mainly affected by the goaf as follows: Coal mining causes uneven settlement of the upper surface. The upper buildings usually only have certain technical treatment measures for uniform settlement, but the resistance is insufficient for this uneven geological settlement. In order to balance the displacement difference, it is necessary to redistribute the force. When the redistribution of force exceeds the design bearing capacity of the component, it will cause structural failure to varying degrees, causing immeasurable harm to the functional realization of the building. Due to the uneven settlement of the surface, there are uneven collapsed areas and cracks everywhere. Some iron towers have bent and deformed components such as tower legs due to foundation collapse, and some even have tilted the entire tower body.

[0004] In general, the goaf will cause the ground surface to deform and form a settlement basin. The central part of the settlement basin is mainly vertically subsided, supplemented by horizontal displacement and tilt displacement; while the edge of the basin and the outer edge of the fracture stretching zone are mainly tilt displacement and horizontal displacement deformation. With the acceleration of the coal seam mining process, the goaf range will become larger and larger, and the resulting ground deformation in the mining area will become more and more serious. Large areas of subsidence basins, irregular collapse pits and ground fissures will appear on the surface, which may affect the safe operation of ground buildings. In addition to taking certain treatment measures in the design of the transmission line in the goaf, it is very necessary to monitor the transmission tower in the goaf of coal mines. In the existing technology, only manual inspections are used to inspect the settlement posture of the transmission line tower in the goaf, but manual inspections cannot be monitored in real time, and after the inspection of the tower body tilting, it cannot provide effective data for subsequent leveling guidance. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a system and method for monitoring the settlement posture of transmission line towers in goaf areas, which can realize online monitoring of transmission tower settlement faults and perform subsequent tower leveling processing based on the obtained data, thereby solving the defects of traditional manual inspections and reducing accidents caused by transmission tower settlement.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A transmission line tower settlement posture monitoring system in goaf area, comprising:

[0008] A tilt sensor, which is installed on the top of the transmission tower in the goaf area; the tilt sensor is used to measure the tilt angle of the transmission tower in the goaf area;

[0009] A static level, which is installed at the foot of the transmission tower in the goaf area; the static level is used to monitor the settlement data of the tower body of the transmission tower in the goaf area;

[0010] The output ends of the inclination sensor and the static level are connected to a control device, and the control device is used to monitor the collected data of the inclination sensor and the static level.

[0011] Preferably, the inclination sensor is installed above the top of the transmission tower in the goaf.

[0012] Preferably, the number of the static levels is four, and the four static levels are correspondingly installed at the four tower feet of the transmission tower in the goaf area.

[0013] Preferably, the control device is an ARM single chip microcomputer.

[0014] Preferably, the inclination sensor, the static level and the control device are connected to a solar battery.

[0015] Preferably, the inclination sensor and the static level output RS485 signals to the control device, and the control device performs leveling according to the monitored values.

[0016] Preferably, leveling is performed when the settlement value detected by the static level is greater than 10 cm.

[0017] Preferably, leveling is performed when the inclination detected by the inclination sensor is greater than 0.1%.

[0018] A method for monitoring the settlement posture of a transmission line tower in a goaf area, based on a system for monitoring the settlement posture of a transmission line tower in a goaf area as described in any one of the above, comprising:

[0019] The tilt sensor installed on the top of the transmission tower in the goaf measures the tilt angle of the transmission tower in the goaf;

[0020] The static level installed at the foot of the transmission tower in the goaf area monitors the settlement data of the transmission tower body in the goaf area;

[0021] The inclination sensor and the static level output monitoring data to the control device, and the control device monitors the collected data of the inclination sensor and the static level.

[0022] Preferably, after the inclination sensor and the static level collect data, they output RS485 signals to the control device, and the control device performs leveling according to the monitored values.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] The present invention provides a system for monitoring the settlement posture of a transmission line tower in a goaf area. The system of the present invention integrates a static level and an inclination sensor to achieve accurate monitoring of the posture of a transmission tower. By installing an inclination sensor above the top of the tower, the change of the tower posture can be monitored in real time; four static levels are installed at the four tower feet to monitor the settlement of the tower. The inclination sensor is installed to monitor when the transmission tower is tilted due to strong winds and the like when there is no settlement. The static level is installed to monitor the settlement value at the foot of the tower, so as to facilitate the subsequent lifting and leveling of the transmission tower according to the settlement value. In terms of monitoring the transmission tower, only the inclination of the tower body is monitored, and the settlement at the foot of the tower is not monitored. Whether the transmission tower is tilted due to settlement is not considered, and the subsequent leveling of the transmission tower cannot be guided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the settlement posture monitoring system for transmission line towers in goaf areas;

[0026] Figure 2 This is a schematic diagram of the settlement posture monitoring process of transmission line towers in goaf areas;

[0027] In the attached figure: 1 is the transmission tower in the goaf; 2 is the inclination sensor; 3 is the static level. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0034] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0035] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0036] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] Example 1

[0039] The present invention provides a transmission line tower settlement posture monitoring system for goaf areas, comprising: a tilt sensor 2 and a static level 3.

[0040] The inclination sensor 2 is installed on the top of the transmission tower 1 in the goaf area; the inclination sensor 2 is used to measure the inclination angle of the transmission tower 1 in the goaf area.

[0041] The static level 3 is installed at the foot of the transmission tower 1 in the goaf area; the static level 3 is used to monitor the settlement data of the tower body of the transmission tower 1 in the goaf area.

[0042] The output ends of the inclination sensor 2 and the static level 3 are connected to a control device, and the control device is used to monitor the collected data of the inclination sensor 2 and the static level 3.

[0043] Since the surface of the transmission tower in the goaf area subsides and there may be strong winds, the present invention provides a high-precision real-time monitoring system, which integrates a static level and an inclination sensor to achieve accurate monitoring of the posture of the transmission tower.

[0044] The present invention can monitor the change of the tower body posture in real time by installing a tilt sensor above the tower top; and four static levels are installed at four tower feet to monitor the settlement of the tower body.

[0045] The purpose of installing the inclination sensor in the present invention is to monitor the tilt of the transmission tower due to strong winds when the transmission tower has not settled. The purpose of installing the static level is to monitor the settlement value at the foot of the tower, so as to facilitate the subsequent lifting and leveling of the transmission tower according to the settlement value.

[0046] The present invention avoids the problem that, in monitoring the transmission tower, only the inclination of the tower body is monitored, but the settlement at the tower foot is not monitored, and whether the transmission tower is tilted due to the settlement is not considered, and subsequent leveling work of the transmission tower cannot be guided.

[0047] Example 2

[0048] like Figure 1 As shown, a system for monitoring the settlement posture of a transmission line tower in a goaf area of ​​the present invention comprises a transmission tower in a goaf area 1, a tilt sensor 2 and a static level 3.

[0049] The inclination sensor 2 is installed above the top of the transmission tower 1 in the goaf area. By installing the inclination sensor above the top of the tower, the change of the tower posture can be monitored in real time; four static levels are installed at the four tower feet to monitor the settlement of the tower.

[0050] There are four static levels 3 , which are correspondingly installed at four tower feet of the transmission tower 1 in the goaf area.

[0051] The purpose of installing the inclination sensor is to monitor the tilt of the transmission tower due to strong winds when the tower has not settled. The purpose of installing the static level is to monitor the settlement value at the foot of the tower, so as to facilitate the subsequent lifting and leveling of the transmission tower according to the settlement value.

[0052] The inclinometer uses the earth's gravity to convert the attitude angle of the sensor's sensitive device to the earth into an analog signal or pulse signal. The inclinometer usually contains a three-axis accelerometer that can sense the gravity acceleration components in three directions. When an object tilts, the sensing element will sense the gravity acceleration components in different directions and output corresponding electrical signals. These electrical signals are processed and converted, and finally output as the inclination angle of the object relative to the horizontal plane.

[0053] The static level uses the Pascal principle to calculate the displacement by the pressure difference between the measuring point and the reference point. The static level 3 mainly uses gravity to achieve measurement. It is equipped with a high-precision gravity sensor to sense the changes in the earth's gravity and convert it into an electrical signal. During the measurement process, it is necessary to select a reference point with a known elevation, and then place the static level at the point to be measured so that it is on the same horizontal plane as the reference point. The gravity sensor will sense the changes in the earth's gravity and convert the measured electrical signal into the value of the elevation difference. Finally, the specific elevation difference value is obtained through data processing.

[0054] like Figure 2 As shown, the inclination sensor 2 and the static level 3 will output RS485 signals after data collection, and transmit the signals to the ARM microcontroller, and its external solar energy and battery can ensure uninterrupted power supply.

[0055] When the settlement value detected by the static level 3 in the embodiment of the present invention is greater than 10 cm, leveling work is performed.

[0056] When the inclination detected by the inclination sensor 2 in the embodiment of the present invention is greater than 0.1%, the leveling operation is performed.

[0057] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0058] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A transmission line tower settlement posture monitoring system in goaf area, characterized in that: include: A tilt sensor (2), the tilt sensor (2) being installed on the top of the goaf area transmission tower (1); the tilt sensor (2) being used to measure the tilt angle of the goaf area transmission tower (1); A static level (3), the static level (3) being installed at the foot of a transmission tower (1) in a goaf area; the static level (3) being used to monitor the settlement data of the tower body of the transmission tower (1) in the goaf area; The output ends of the inclination sensor (2) and the static level (3) are connected to a control device, and the control device is used to monitor the collected data of the inclination sensor (2) and the static level (3).

2. A transmission line tower settlement posture monitoring system for goaf areas according to claim 1, characterized in that: The inclination sensor (2) is installed above the top of the transmission tower (1) in the goaf area.

3. The system for monitoring the settlement posture of transmission line towers in goaf areas according to claim 1 is characterized in that: The number of the static levels (3) is four, and the four static levels (3) are correspondingly installed at the four tower feet of the transmission tower (1) in the goaf area.

4. The system for monitoring the settlement posture of transmission line towers in goaf areas according to claim 1 is characterized in that: The control device is an ARM single chip microcomputer.

5. The system for monitoring the settlement posture of transmission line towers in goaf areas according to claim 1 is characterized in that: The inclination sensor (2), the static level (3) and the control device are connected to a solar battery.

6. The system for monitoring the settlement posture of transmission line towers in goaf areas according to claim 1 is characterized in that: The inclination sensor (2) and the static level (3) output RS485 signals to the control device, and the control device performs leveling according to the monitored values.

7. The system for monitoring the settlement posture of transmission line towers in goaf areas according to claim 1, characterized in that: When the settlement value detected by the static level (3) is greater than 10 cm, leveling is performed.

8. The system for monitoring the settlement posture of transmission line towers in goaf areas according to claim 1 is characterized in that: When the inclination detected by the inclination sensor (2) is greater than 0.1%, leveling is performed.

9. A method for monitoring the settlement posture of transmission line towers in goaf areas, characterized in that: A transmission line tower settlement posture monitoring system for goaf areas according to any one of claims 1 to 8, comprising: The inclination sensor (2) installed on the top of the transmission tower (1) in the goaf measures the inclination angle of the transmission tower (1) in the goaf; A static level (3) installed at the foot of the transmission tower (1) in the goaf area monitors the settlement data of the tower body of the transmission tower (1) in the goaf area; The inclination sensor (2) and the static level (3) output monitoring data to the control device, and the control device monitors the collected data of the inclination sensor (2) and the static level (3).

10. A method for monitoring the settlement posture of transmission line towers in goaf areas according to claim 9, characterized in that: After the inclination sensor (2) and the static level (3) collect data, they output RS485 signals to the control device, and the control device performs leveling according to the monitored values.

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