Measuring line installation structure, device and system for landslide monitoring

Abstract

The present invention discloses a measuring line installation structure, device and system for landslide monitoring, including a measuring line, wherein a plurality of protective tubes arranged in sequence along the measuring line are disposed on the outer cover of the measuring line, a sealing structure for preventing soil from entering the protective tube is disposed at the end of the protective tube, and a perforation having a larger aperture than the measuring line diameter is disposed on the sealing structure. The technology of the present invention can avoid false alarms when disturbed and can realize data monitoring when a landslide is misaligned.

Description

Technical Field

[0001] The invention relates to the technical field of landslide monitoring, and in particular to a measuring line installation structure, a device and a system for landslide monitoring. Background Art

[0002] Landslide refers to the natural phenomenon that the soil or rock on the slope slides down the slope as a whole or dispersedly under the action of gravity along a certain weak surface or weak zone, affected by factors such as river scouring, groundwater activity, rainwater soaking, earthquakes and artificial slope cutting. The surface crack meter monitoring method is to set the benchmark point and monitoring point with concrete piers on both sides of the tension crack at the rear edge of the landslide, fix the rope sensor to the benchmark point, and set one end of the measuring line at the monitoring point. The measuring line is suspended or installed on the ground surface with plastic. This method is easily disturbed and damaged by human, livestock and animal activities, and there are many false alarms. When the landslide is dislocated and deformed, it cannot provide accurate monitoring data, and there may be a risk of disaster omission. Summary of the invention

[0003] In order to solve the problem that the existing landslide monitoring device can only monitor landslide data and is easily disturbed, the present invention provides a landslide monitoring line installation structure, device and system, which can avoid false alarms when disturbed and realize data monitoring when the landslide is misaligned.

[0004] The present invention is achieved through the following technical solutions:

[0005] A first aspect of the present invention provides a measuring line installation structure for landslide monitoring, wherein the measuring line is passed through multiple sections of protective tubes, and the ends of the protective tubes are provided with sealing structures to prevent soil from entering. The sealing structure is provided with perforations with an aperture larger than the diameter of the measuring line. The protective tube adopts a three-layer plastic steel hose structure, and does not affect the sliding of the measuring line in the hose when bent.

[0006] The present invention arranges multiple sections of protective tubes outside the measuring line, and the measuring line can be directly installed under the ground to avoid false alarms caused by interference and damage caused by human, livestock and animal activities; a sealing structure is arranged at the end of the protective tube to prevent soil from pouring into the protective tube and affecting the sliding of the measuring line. Furthermore, perforations are arranged on the sealing structure to avoid the setting of the sealing structure from affecting the normal movement of the measuring line; the protective tube has multiple sections, and there is no connection between adjacent protective tubes. When the crack is misaligned, the protective tube close to the crack is separated from the segmentation, and the rest changes along the misaligned surface. The measuring line will not be suspended, and it can be ensured that the protective tubes on both sides of the crack move vertically relative to each other with the crack, that is, deform along the misaligned edge, thereby improving the accuracy of the measuring data of the measuring line and the monitoring accuracy when the crack is misaligned.

[0007] In a possible design, the length of the protection tube is 0.5 meters to 1.5 meters.

[0008] The protection tube provides protection for the measuring line to prevent soil and other factors from affecting the normal stretching and movement of the measuring line. The longer the protection tube is, the more inconvenient it is to install the measuring line and it is not conducive to setting the protection tube according to the crack position; the shorter the protection tube is, the more sealing structure needs to be set at the end, and the more time-consuming the installation is. Considering the above, it is best to set the protection tube at 0.5 to 1.5 meters.

[0009] In a possible design, the protective tube is a plastic-steel structural hose.

[0010] A second aspect of the present invention provides a landslide monitoring device, comprising a pull-rope sensor, wherein the pull-rope sensor comprises a sensor body and a landslide monitoring measuring line installation structure as described in the first aspect and any possible design thereof, wherein one end of the measuring line is connected to the sensor body.

[0011] The third aspect of the present invention provides a landslide monitoring system, comprising the landslide monitoring device described in the second aspect, a telemetry terminal connected to the pull-rope sensor for realizing landslide detection according to the output signal of the pull-rope sensor and generating an alarm signal according to the landslide monitoring, and an alarm device for realizing an alarm according to the alarm signal of the telemetry terminal.

[0012] In a possible design, the measuring range of the draw wire sensor is greater than 10 meters.

[0013] In a possible design, the measuring line is connected to the sensor body at one end thereof and is arranged at a reference point, and the other end thereof is fixed at a monitoring point, and also includes a cushion layer, which is used to be installed at the crack to be monitored and is respectively placed above and / or below the measuring line.

[0014] The survey line of this scheme is installed underground, and the cushion layer is also set underground. The cushion layer is set above and below the survey line. When misalignment occurs, the cushion layer breaks at the crack due to the downward movement of the soil. Under the action of the cushion layer and the soil on the cushion layer, the protective pipe corresponding to the misalignment below moves downward effectively, avoiding the protective pipe from being suspended in the air, thereby improving the reliability of monitoring.

[0015] In a possible design, the cushion layer is a concrete layer.

[0016] In a possible design, it also includes a power supply for supplying power to the landslide monitoring device, the telemetry terminal and the alarm device.

[0017] In one possible design, the power source includes a battery, a solar panel, and a charging control circuit connected between the battery and the solar panel.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] 1. The protective tube is arranged outside the measuring line of the present invention, so that the measuring line can be directly installed under the ground to avoid false alarms caused by interference and damage caused by human, livestock and animal activities.

[0020] 2. The present invention has multiple protective tubes which are sleeved outside the side line. There is no connection between adjacent protective tubes. After installation, when the crack is misaligned, the protective tubes close to the crack are separated from the segmented part, and the measuring line will not be suspended in the air. This ensures that the protective tubes on both sides of the crack move vertically relative to each other with the crack, that is, deform along the misaligned edge, thereby improving the accuracy of the measuring data and the monitoring precision of the measuring line when the crack is misaligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention.

[0022] Figure 1 This is a schematic diagram of the installation structure of the measuring line installation structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the landslide monitoring system of the present invention when the cracks are not dislocated;

[0024] Figure 3 It is a structural schematic diagram of the landslide monitoring system of the present invention when the crack produces tensile deformation;

[0025] Figure 4 It is a schematic diagram of the structure of the landslide monitoring system of the present invention when the crack is misaligned. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that although the description of these embodiments is used to help understand the present invention, it does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0027] It should be understood that the term "and / or" that may appear in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" that may appear in this article describes another type of association object relationship, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0028] It should be understood that certain details are provided in the following description to facilitate a complete understanding of the example embodiments. However, one of ordinary skill in the art should understand that the example embodiments can be implemented without these specific details. For example, the system can be shown in a block diagram to avoid obscuring the example with unnecessary details. In other examples, well-known processes, structures, and techniques may not be shown in unnecessary details to avoid obscuring the example.

[0029] The first aspect of the present invention provides a landslide monitoring line installation structure, such as Figure 1 As shown, it includes a measuring line 11 and a protective tube 12, the protective tube 12 has multiple sections, the protective tube 12 is sleeved outside the measuring line 11, and the multiple sections of the protective tube 12 are arranged in sequence along the measuring line 11. The end of the protective tube 12 is provided with a sealing structure for preventing soil from entering the protective tube 12, and the sealing structure is provided with a perforation with a hole diameter larger than the diameter of the measuring line 11.

[0030] The measuring line 11 can be made of 304 multi-core stainless steel wire rope or other ropes to ensure the tensile strength and service life of the measuring line.

[0031] The protective tube is a hose. In order to increase the service life, a plastic steel hose can be used. The inner and outer layers of the plastic steel hose are anti-corrosion plastics, and the middle is galvanized steel wire. Of course, the protective tube can also be made of other materials. In the actual installation process, the length of the protective tube 12 is controlled to be 0.5 meters to 1.5 meters, preferably, it is set to 1 meter.

[0032] The sealing structure can also be implemented in a variety of structures, for example, an end cover structure similar to a bottle cap, with a perforation set on the cover body; or tape is wrapped around the two ends of the protective tube, the tape does not completely seal the ends of the protective tube, and a perforation is left to facilitate the measurement line to pass through the two ends of the protective tube.

[0033] The survey line installation structure can be installed underground to avoid interference from humans or animals. There is no connection between the protection pipes. When the crack is misaligned, the survey line will not be suspended. The protection pipes on both sides of the crack can be ensured to move vertically relative to each other with the crack, that is, deform along the misaligned edge, thereby improving the accuracy of the survey line measurement data and the monitoring accuracy when the crack is misaligned.

[0034] The second aspect of the present invention provides a landslide monitoring device, including a pull-rope sensor, the pull-rope sensor including a sensor body 31 and a measuring line installation structure for landslide monitoring as described in the first aspect and any possible embodiment thereof, one end of the measuring line 11 is connected to the sensor body 31. The sensor body 31 includes a pull rope, a winding wheel for winding the pull rope, and a sensor for detecting the length of the pull rope being pulled out, and one end of the measuring line is fixed to the pull rope.

[0035] The third aspect of the present invention provides a landslide monitoring system, comprising the landslide monitoring device described in the second aspect, a telemetry terminal 32 and an alarm device 33, wherein the telemetry terminal 32 is connected to the pull rope sensor for realizing landslide detection according to the output signal of the pull rope sensor and generating an alarm signal according to the landslide monitoring, specifically, the telemetry terminal 32 is connected to a sensor for detecting the length of the pull rope being pulled out; the alarm device 33 realizes an alarm according to the alarm signal of the telemetry terminal 32. The telemetry terminal 32 processes, analyzes and judges the output signal of the sensor, and generates an alarm signal when the pull rope length of the sensor exceeds a threshold value, and at this time, the alarm device realizes an alarm according to the alarm signal.

[0036] One end of the measuring line 11 connected to the sensor body 31 is set on the reference point 41, and the other end is fixed on the monitoring point 42, and also includes a cushion layer 43, which is used to be installed at the crack to be monitored and is respectively placed above and / or below the measuring line 11. The cushion layer can be set only above the measuring line or only below the measuring line, or simultaneously above and below the measuring line. Preferably, the cushion layer is set above and below the measuring line at the same time, so that the cushion layer breaks when the crack is misaligned. Under the action of the cushion layer and the soil above the cushion layer, the protective pipe moves down with the cushion layer and soil, avoiding the measuring line from being suspended, realizing effective measurement of the misalignment distance, and improving the accuracy of the measuring line measurement data and monitoring accuracy when the crack is misaligned. In order to ensure that the cushion layer can be effectively broken under the action of soil and the like when the crack is misaligned, the cushion layer can be made of a concrete layer. Specifically, C15 concrete can be used as the cushion layer. Of course, the cushion layer can also adopt other structures, such as a plastic plate with a certain degree of brittleness, and the cushion layer can be broken under the force of soil, etc. when the platform is misaligned. When the cushion layer is installed, the width of the cushion layer must be greater than the width of the crack.

[0037] The system is generally used in the field, and its power supply is preferably solar power supply, that is, it also includes a power supply for powering the landslide monitoring device, the telemetry terminal 32 and the alarm device 33. The power supply includes a battery, a solar panel 5 and a charging control circuit connected between the battery and the solar panel 5.

[0038] During installation, if Figure 2 As shown, the reference point 41 is formed by digging a 0.6*0.6m foundation pit with a depth of about 0.6m at a distance of about 1 to 3m from the crack in the crack stability area at the rear edge of the landslide, and pouring concrete to expose about 0.2m above the ground.

[0039] The monitoring point is formed by digging a foundation pit with a diameter of 0.4m and a depth of about 0.6m at a position about 1 to 3m perpendicular to the extension line of the crack, and pouring a concrete pier in the foundation pit. Angle steel is inserted in the middle, and the surface of the concrete pier is about 0.2m from the ground surface. A 1m long plastic pipe is buried in the concrete, and about 0.5m is exposed from the ground surface.

[0040] A survey trench is dug between the benchmark 41 and the monitoring point. The depth of the survey trench is about 0.2m. When the land is cultivated, the depth of the survey trench is >0.5m and the width is 0.1m. A C15 concrete cushion layer with a thickness of about 0.05m is set at the cracks at the bottom of the survey trench. The length of the cushion layer is about 0.5m.

[0041] Put the protective tube on the outside of the measuring line and wrap the two ends with tape to prevent the movement of the measuring line. Figure 2 As shown, it is placed in the measuring line trench, and the other end is fixed on the monitoring point. A C15 concrete cushion layer with a thickness of about 0.05m is set above the measuring line at the crack of the measuring line trench.

[0042] like Figure 3 As shown, when the crack produces tensile deformation, the protection pipe is separated from the segment and the data is collected, processed and uploaded by the telemetry terminal;

[0043] like Figure 4 As shown in the figure, when the crack produces misalignment deformation, the cushion layer breaks under the action of soil and other forces, and the protection pipe is separated from the segment. Under the action of the cushion layer and soil, the protection pipe on the downward side of the crack moves downward with the cushion layer and soil, and the measurement line changes along the edge of the misalignment, which is also collected, processed and uploaded by the telemetry terminal; when the change exceeds the warning threshold, the telemetry terminal immediately activates the wireless alarm to remind personnel to evacuate.

[0044] The above structure can not only measure the tension deformation, but also measure the displacement deformation.

[0045] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A measuring line installation structure for landslide monitoring, comprising a measuring line (11), characterized in that: The outer jacket of the measuring line (11) is provided with a plurality of protective tubes (12) arranged in sequence along the measuring line (11); the ends of the protective tubes (12) are provided with sealing structures for preventing soil from entering the protective tubes (12); the sealing structures are provided with holes having a hole diameter larger than the diameter of the measuring line (11); and adjacent protective tubes (12) are not connected; The length of the protection tube (12) is 0.5 m to 1.5 m.

2. The measuring line installation structure for landslide monitoring according to claim 1, characterized in that: The protective tube (12) is a hose.

3. A landslide monitoring device, comprising a pull-wire sensor, characterized in that: The pull-wire sensor comprises a sensor body (31) and a measuring line installation structure for landslide monitoring according to any one of claims 1 to 2, and one end of the measuring line (11) is connected to the sensor body (31).

4. The landslide monitoring system is characterized by: The invention comprises the landslide monitoring device according to claim 3, a telemetry terminal (32) connected to the pull-wire sensor for realizing landslide detection according to the output signal of the pull-wire sensor and generating an alarm signal according to the landslide monitoring, and an alarm device (33) for realizing an alarm according to the alarm signal of the telemetry terminal (32).

5. The landslide monitoring system according to claim 4, characterized in that: One end of the measuring line (11) connected to the sensor body (31) is arranged on a reference point (41), and the other end is fixed on a monitoring point (42). The measuring line (11) also includes a cushion layer (43) which is used to be installed at the crack to be monitored and is respectively placed above and / or below the measuring line (11).

6. The landslide monitoring system according to claim 5, characterized in that: The cushion layer (43) is a concrete layer.

7. The landslide monitoring system according to claim 4, characterized in that: It also includes a power supply for supplying power to the landslide monitoring device, the telemetry terminal (32) and the alarm device (33).

8. The landslide monitoring system according to claim 7, characterized in that: The power source comprises a storage battery, a solar panel (5), and a charging control circuit connected between the storage battery and the solar panel (5).

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