A node monitoring device and method for active protection network

Abstract

The present invention discloses a node monitoring device and method for an active protection net, comprising a dynamometer, a displacement meter, a joint, a clamp and a bolt. The dynamometer is located on the left and right sides of the active protection net node and is symmetrically arranged on the horizontal support rope. The displacement meter is located on the upper side of the active protection net node and is arranged on the longitudinal support rope. The present invention adopts a system monitoring device composed of sensors such as a dynamometer and a displacement meter, which can monitor the nodes of the active protection net in real time, has high monitoring accuracy and good reliability, and is conducive to realizing early warning and forecasting of landslides and risk control.

Description

Technical Field

[0001] The invention relates to a node monitoring device and method for an active protection network. Background Art

[0002] As a common slope protection structure, active protection nets are widely used in engineering construction fields such as slopes. Their working principle is mainly to connect and pre-tension the criss-crossing horizontal support ropes and longitudinal support ropes with steel rope anchors arranged in a square pattern. A noose net is laid in each hanging net unit composed of support ropes. Each net is sewn and connected to the surrounding support ropes with suture ropes and tightened. At the same time, the pre-tensioning process can enable the active protection net system to apply a certain normal pre-tensioning pressure to the slope, thereby improving the stability of the surface rock and soil, preventing the occurrence of collapse and rockfall as much as possible, or limiting the damage to local rock and soil, so as to achieve the purpose of operational safety protection of the highway. However, in the actual operation of the expressway, the high slopes are significantly weathered and eroded under a series of adverse effects such as plum rains and typhoons. The weathering of the slope rock mass is aggravated, which is prone to disasters such as collapse and collapse. When collapse and collapse occur, it will cause certain damage to the active protection network, and then cause certain hidden dangers to the safe operation of the expressway. After the collapse and collapse occur, there are no monitoring measures and the hidden dangers are not discovered in time, resulting in great losses.

[0003] In order to solve the above problems, it is necessary to monitor the nodes composed of the longitudinal and transverse support ropes and steel rope anchors of the active protection net in real time, so as to timely understand the displacement and stress changes of the slope at the nodes of the active protection net, so as to achieve real-time monitoring of slope collapse and collapse disasters and ensure the safe operation of the highway. Therefore, it is of great significance to propose a monitoring method and device for active protection net nodes with simple equipment, convenient installation, low cost and easy maintenance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a node monitoring device and method for an active protection network which has a simple structure, quick operation, low cost, strong reliability, good stability, is convenient for stress and displacement monitoring of the nodes of the active protection network, is easy to install, and has all-round, high precision and strong practicality.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A node monitoring device for an active protection net consists of a dynamometer 1, a dynamometer 2, and a displacement meter. One end of the dynamometer 1, the dynamometer 2, and the displacement meter is connected to an anchor steel rope. The dynamometer 1, the dynamometer 2, and the displacement meter all include a tensioning part and a fixing part. The tensioning part includes a clamp 1 and a joint 1, and the fixing part includes a clamp 2 and a joint 2. The fixing parts of the dynamometer 1, the dynamometer 2, and the displacement meter are fixedly connected to the anchor steel rope, the tensioning parts of the dynamometer 1 and the dynamometer 2 are fixedly connected to a transverse support rope, and the tensioning part of the displacement meter is fixedly connected to a longitudinal support rope.

[0007] Preferably, the dynamometer 1 and dynamometer 2 are both composed of vibrating string sensors and / or digital sensors, and collect and transmit signals in a wired or wireless manner. Both ends of the dynamometer 1 and dynamometer 2 are provided with screw holes and internal threads.

[0008] Preferably, the displacement meter is composed of a vibrating string sensor and / or a digital sensor, and collects and transmits signals in a wired or wireless manner. Telescopic measuring rods and spherical connecting holes are provided at both ends of the displacement meter.

[0009] Preferably, during operation, the tensioning parts of the dynamometer 1 and the dynamometer 2 tension the transverse support rope toward the middle with the anchor steel rope as the center, and the transverse support rope between the tensioning parts of the dynamometer 1 and the dynamometer 2 is not subjected to stress.

[0010] Preferably, the tensioning parts of dynamometer 1 and dynamometer 2 generate a pre-tensioning force when tensioning the transverse support rope, thereby realizing stress monitoring of the transverse support rope, anchor steel rope and rock mass at the nodes of the active protection net.

[0011] Preferably, during operation, the displacement monitoring of the transverse support ropes, anchor steel ropes and rock mass at the nodes of the active protection net is achieved through the telescopic measuring rod on the upper part of the displacement meter.

[0012] Preferably, the contact surfaces of the clamp 1, the joint 1 and the transverse support rope and the longitudinal support rope are provided with a groove 1, and the contact surfaces of the clamp 2, the joint 2 and the anchor steel rope are provided with a groove 2.

[0013] A node monitoring method for an active protection network comprises the following steps:

[0014] 1) According to the actual conditions of the slope site, select the corresponding active protection network nodes to install the dynamometer and displacement meter;

[0015] 2) Install the dynamometer 1 on the left side, fasten the connector 2 and the clamp 2 of the dynamometer 1 to the left part of the anchor steel rope exposed near the slope surface by bolts, then determine the fixed position of the left side of the transverse support rope, fasten the connector 1 and the clamp 1 of the dynamometer 1 to the transverse support rope by bolts, and finally connect the connector 1 of the dynamometer 1 to the dynamometer 1 by bolts to complete the installation of the dynamometer 1 on the left side;

[0016] 3) Repeat step 2) to complete the installation of the second dynamometer on the right side;

[0017] 4) Install the displacement meter, fasten the clamp 2 and the joint 2 of the displacement meter to the upper side of the exposed part of the anchor steel rope by bolts, then pull the joint 1 of the displacement meter out for a distance, and fasten the clamp 1 and the joint 1 of the displacement meter to the longitudinal support rope by bolts again, thereby completing the installation of the displacement meter;

[0018] 5) Rotate the bolts, and through the adjustment of the bolts, the tensioning parts of the dynamometers 1 and 2 tension the transverse support rope with the anchor steel rope as the center, and the transverse support rope between the tensioning parts changes from a tensioned state to a relaxed state until it meets the use requirements;

[0019] 6) Adjust the length of the telescopic rod of the displacement meter by means of bolts until the use requirements are met;

[0020] 7) When the dynamometer 1, dynamometer 2, and displacement meter detect stress changes or displacement changes, the collected data are sent to the monitoring device via wired or wireless means.

[0021] The beneficial effects of the present invention are:

[0022] 1) The equipment has a simple structure, is easy to install and operate, has low cost and is easy to replace and repair;

[0023] 2) No damage was caused to the original structure of the longitudinal and transverse support ropes and anchor steel ropes at the nodes of the active protection net;

[0024] 3) At the same time, the sensor monitoring data has high accuracy and good reliability, realizing the synchronous monitoring of stress and displacement of the active protection network nodes, without being interfered by other factors, and has the advantages of all-round, high precision and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below, but this does not limit the protection scope of the present invention.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is the installation schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the AA section arrangement of the present invention;

[0029] Figure 4 It is a schematic diagram of the BB section arrangement of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure connection of the dynamometer of the present invention;

[0031] Figure 6 It is a schematic diagram of the connection structure of the displacement meter of the present invention;

[0032] Among them, 1. Anchor steel rope, 2. Dynamometer 1, 3. Dynamometer 2, 4. Displacement meter, 5. Noose net, 6. Longitudinal support rope, 7. Transverse support rope, 8. Clamp 1, 9. Connector 1, 10. Connector 2, 11. Clamp 2. DETAILED DESCRIPTION

[0033] See also Figures 1 to 6 A node monitoring device for an active protection net shown in the figure is composed of a dynamometer 2, a dynamometer 3, and a displacement meter 4. One end of the dynamometer 2, the dynamometer 3, and the displacement meter 4 is connected to the anchor steel rope. The dynamometer 2, the dynamometer 3, and the displacement meter 4 all include a tensioning part and a fixing part. The tensioning part includes a clamp 8 and a joint 9, and the fixing part includes a clamp 11 and a joint 10. The fixing parts of the dynamometer 2, the dynamometer 3, and the displacement meter 4 are fixedly connected to the anchor steel rope 1, the tensioning parts of the dynamometer 2, the dynamometer 3, and the displacement meter 4 are fixedly connected to the horizontal support rope, and the tensioning part of the displacement meter 4 is fixedly connected to the longitudinal support rope.

[0034] Furthermore, the dynamometer 1 2 and the dynamometer 2 3 are both composed of vibrating string sensors and / or digital sensors, and collect and send signals in a wired or wireless manner. Both ends of the dynamometer 1 and the dynamometer 2 are provided with screw holes and internal threads.

[0035] Furthermore, the displacement meter 4 is composed of a vibrating string sensor and / or a digital sensor, and collects and transmits signals in a wired or wireless manner. Telescopic measuring rods and spherical connecting holes are provided at both ends of the displacement meter 4.

[0036] Furthermore, during operation, the tensioning parts of the dynamometer 1 2 and the dynamometer 2 3 tension the transverse support rope toward the middle with the anchor steel rope as the center, and the transverse support rope between the tensioning parts of the dynamometer 1 2 and the dynamometer 2 3 is not subjected to stress.

[0037] Furthermore, when the tensioning parts of the dynamometer 1 2 and the dynamometer 2 3 tension the transverse support rope, a pre-tensioning force is generated, thereby realizing stress monitoring of the transverse support rope, anchor steel rope and rock mass at the nodes of the active protection net.

[0038] Furthermore, during operation, the displacement monitoring of the transverse support ropes, anchor steel ropes and rock mass at the nodes of the active protection net is realized through the telescopic measuring rod on the upper part of the displacement meter 4.

[0039] Furthermore, the contact surfaces of the clamp 1 8 , the joint 1 9 and the transverse support rope 7 and the longitudinal support rope 6 are provided with a groove 1 , and the contact surfaces of the clamp 2 11 , the joint 2 10 and the anchor steel rope 1 are provided with a groove 2 .

[0040] A node monitoring method for an active protection network comprises the following steps:

[0041] 1) According to the actual conditions of the slope site, select the corresponding active protection network nodes to install the dynamometer and displacement meter;

[0042] 2) Install the dynamometer 1 on the left side, fasten the connector 2 and the clamp 2 of the dynamometer 1 to the left part of the anchor steel rope exposed near the slope surface by bolts, then determine the fixed position of the left side of the transverse support rope, fasten the connector 1 and the clamp 1 of the dynamometer 1 to the transverse support rope by bolts, and finally connect the connector 1 of the dynamometer 1 to the dynamometer 1 by bolts to complete the installation of the dynamometer 1 on the left side;

[0043] 3) Repeat step 2) to complete the installation of the second dynamometer on the right side;

[0044] 4) Install the displacement meter, fasten the clamp 2 and joint 2 of the displacement meter to the upper side of the exposed part of the anchor steel rope 8 by bolts (the displacement meter has been installed with the joint 1 and joint 2 at this time), then pull the joint 1 of the displacement meter out for a distance, and fasten the clamp 1 and joint 1 of the displacement meter to the longitudinal support rope by bolts again, thereby completing the installation of the displacement meter;

[0045] 5) Rotate the bolts, and through the adjustment of the bolts, the tensioning parts of the dynamometers 1 and 2 tension the transverse support rope with the anchor steel rope as the center, and the transverse support rope between the tensioning parts changes from a tensioned state to a relaxed state until it meets the use requirements;

[0046] 6) Adjust the length of the telescopic rod of the displacement meter by means of bolts until the use requirements are met;

[0047] 7) When the dynamometer 1, dynamometer 2, and displacement meter detect stress changes or displacement changes, the collected data are sent to the monitoring device via wired or wireless means.

[0048] During this process, monitoring personnel can determine the conditions of the mountain where the active protection net is located through the transmitted data information, thereby facilitating early warning and evacuation of personnel from dangerous areas. At the same time, they can prevent or deal with dangerous areas in advance to reduce the occurrence of safety accidents.

[0049] The nodes of the active protection net of the present invention are anchor rod steel ropes at the intersections of the transverse support ropes and the longitudinal support ropes.

[0050] The active protection net of the present invention is connected to the steel rope anchor rods 1 arranged in a square pattern by criss-crossing transverse support ropes 7 and longitudinal support ropes 6 and pre-tensioned, and a noose net 5 is laid in each hanging net unit formed by the support ropes, and each net is sewn and connected to the surrounding support ropes with suture ropes and tightened.

[0051] The above-mentioned monitoring method and device can conveniently and efficiently complete the displacement and stress monitoring of the active protection network nodes. Through continuous real-time monitoring of the active protection network nodes, the internal stress and deformation of the rock mass at the nodes can be timely controlled, the safety risk level of the slope can be determined, and a basis can be provided for subsequent slope maintenance and reinforcement treatment.

[0052] The shapes of the dynamometers, displacement meters, joints, clamps, bolts, etc. in the node monitoring method and device of the present invention can be changed according to different application scenarios of the longitudinal and transverse support ropes and anchor steel ropes at the nodes of the active protection net, but any changes in shape and structure are within the protection scope of the present invention.

[0053] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A node monitoring method for an active protection network, which uses a node monitoring device for an active protection network, characterized in that: The node monitoring device is composed of a dynamometer 1, a dynamometer 2, and a displacement meter. One end of the dynamometer 1, the dynamometer 2, and the displacement meter is connected to the anchor steel rope. The dynamometer 1, the dynamometer 2, and the displacement meter all include a tensioning part and a fixing part. The tensioning part includes a clamp 1 and a joint 1, and the fixing part includes a clamp 2 and a joint 2. The fixing parts of the dynamometer 1, the dynamometer 2, and the displacement meter are fixedly connected to the anchor steel rope, the tensioning parts of the dynamometer 1 and the dynamometer 2 are fixedly connected to the transverse support rope, and the tensioning part of the displacement meter is fixedly connected to the longitudinal support rope; The dynamometer 1 and dynamometer 2 are both composed of vibrating-wire sensors and / or digital sensors, and use wired or wireless methods to collect and send signals. Both ends of the dynamometer 1 and dynamometer 2 are provided with screw holes and internal threads. The displacement meter is composed of a vibrating string sensor and / or a digital sensor, and uses a wired or wireless method to collect and send signals. Telescopic measuring rods and spherical connecting holes are provided at both ends of the displacement meter; When working, the tensioning parts of the dynamometer 1 and the dynamometer 2 tension the transverse support rope toward the middle with the anchor steel rope as the center, and the transverse support rope between the tensioning parts of the dynamometer 1 and the dynamometer 2 is not subjected to force; The tensioning parts of the dynamometers 1 and 2 generate pre-tightening force when tensioning the transverse support rope, so as to realize stress monitoring of the transverse support rope, anchor steel rope and rock mass at the nodes of the active protection net; During operation, the telescopic measuring rod on the upper part of the displacement meter is used to monitor the displacement of the transverse support rope, anchor steel rope and rock mass at the nodes of the active protection net. The contact surfaces of the clamp 1, the joint 1 and the transverse support rope and the longitudinal support rope are provided with a groove 1, and the contact surfaces of the clamp 2, the joint 2 and the anchor steel rope are provided with a groove 2; The node monitoring method adopts the following steps: 1) According to the erosion and weathering conditions of the slope rock mass, select the active protection network nodes at locations with poor geological conditions to install dynamometers and displacement meters; 2) Install the left dynamometer 1, fasten the connector 2 and the clamp 2 of the dynamometer 1 to the left part of the anchor steel rope exposed near the slope surface by bolts, then determine the fixed position of the left side of the transverse support rope, fasten the connector 1 and the clamp 1 of the dynamometer 1 to the transverse support rope by bolts, and finally connect the connector 1 of the dynamometer 1 to the dynamometer 1 by bolts to complete the installation of the left dynamometer 1; 3) Repeat step 2) to complete the installation of the second dynamometer on the right side; 4) Install the displacement meter, fasten the clamp 2 and joint 2 of the displacement meter to the upper side of the exposed part of the anchor steel rope by bolts, then pull the joint 1 of the displacement meter out for a distance, and fasten the clamp 1 and joint 1 of the displacement meter to the longitudinal support rope by bolts again, thereby completing the installation of the displacement meter; 5) Rotate the bolts. Through the adjustment of the bolts, the tensioning parts of the dynamometers 1 and 2 tension the transverse support rope with the anchor steel rope as the center. The transverse support rope between the tensioning parts changes from a tensioned state to a relaxed state until it meets the use requirements. 6) Adjust the length of the telescopic rod of the displacement meter by means of bolts until it meets the use requirements; 7) When the dynamometer 1, dynamometer 2, and displacement meter detect stress changes or displacement changes, the collected data is sent to the monitoring device via wired or wireless means.

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