A long anchor cable anchoring quality detection method and monitoring system

Abstract

The present invention relates to the field of monitoring, and discloses a long anchor cable anchoring quality detection method and monitoring system, wherein the anchoring mesh of the area to be tested is obtained, and the long anchor cable sequence corresponding to the anchoring mesh is obtained, and the cloud data server generates a detection management container according to the long anchor cable anchoring quality detection task; the long anchor cable anchoring detection device obtains the long anchor cable detection index data corresponding to the anchoring mesh according to the detection index in the long anchor cable anchoring quality detection task; according to the set detection cycle, the long anchor cable anchoring detection device collects the detection index data of the long anchor cable according to the detection index, and obtains the long anchor cable detection index data within the detection cycle, if there is no abnormal long anchor cable, then the detection index change amount corresponding to the anchoring mesh is obtained, and the attenuation consistency of the attenuation degree of each long anchor cable corresponding to the anchoring mesh is obtained, and the long anchor cable anchoring quality detection is completed. Compared with traditional manual detection and simple physical testing methods, the present invention has higher detection accuracy and reliability.

Description

Technical Field

[0001] The invention relates to the field of monitoring, and in particular to a long anchor cable anchoring quality detection method and a monitoring system. Background Art

[0002] In the field of modern civil engineering, long anchor cables are widely used as important structural support and fixing elements in bridges, tunnels, slope stabilization, foundation reinforcement of large buildings and other projects. Long anchor cables penetrate into underground stable layers or rock formations and use the friction or bonding force between the anchor body and the surrounding rock and soil to provide stable tension to support and fix the engineering structure. However, the anchoring quality of long anchor cables directly affects their bearing capacity and engineering safety. Therefore, it is very important to accurately and efficiently detect the anchoring quality of long anchor cables.

[0003] Traditional methods for testing the anchoring quality of long anchor cables mostly rely on manual experience and simple physical tests, such as pull-out tests and stress wave tests. Although these methods can reflect the anchoring quality to a certain extent, they have many limitations. For example, pull-out tests may damage the anchor cables and cannot fully reflect the performance changes of the anchor cables during long-term use; stress wave tests are limited by the properties of the anchor cable materials and the surrounding rock and soil, and the test results are easily interfered with. In addition, traditional methods often have low detection efficiency and are difficult to meet the needs of large-scale engineering testing.

[0004] With the advancement of science and technology, especially the rapid development of technologies such as the Internet of Things, big data and artificial intelligence, new ideas and methods have been provided for the detection of the anchoring quality of long anchor cables. By real-time monitoring of the stress, strain, displacement and other parameters of the anchor cable, combined with data analysis algorithms, dynamic and accurate evaluation of the anchoring quality of long anchor cables can be achieved. However, the existing detection methods based on new technologies still have some problems, such as incomplete data collection, insufficient intelligence of analysis algorithms, and insufficient intuitiveness of detection results. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for detecting the anchoring quality of a long anchor cable, comprising the following steps:

[0006] Step 1: Obtain the anchoring grid of the area to be tested, obtain the long anchor cable sequence corresponding to the anchoring grid, and the cloud data server generates a detection management container according to the long anchor cable anchoring quality detection task;

[0007] Step 2: The long anchor cable anchorage detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchorage quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data of the corresponding anchoring grid according to the initial detection index data of each long anchor cable;

[0008] Step three, according to the set detection cycle, the long anchor cable anchoring detection device collects detection index data of the long anchor cable according to the detection index, obtains the long anchor cable detection index data within the detection cycle, compares the long anchor cable detection index data within the detection cycle with the long anchor cable detection index data of the corresponding anchoring mesh, obtains the detection index change of the long anchor cable, and according to the detection index change of each long anchor cable, if there is no abnormal long anchor cable, obtains the detection index change of the corresponding anchoring mesh, and enters step four; otherwise, locates the abnormal long anchor cable and issues an alarm message;

[0009] Step 4, obtaining the change amount of the detection index of each corresponding anchor mesh, and respectively obtaining the attenuation degree of the long anchor cable of the corresponding anchor mesh with the detection index data of the long anchor cable of the corresponding anchor mesh, and obtaining the consistency of the attenuation degree of the long anchor cable of each corresponding anchor mesh. If they are consistent, proceed to step 6, otherwise proceed to step 5;

[0010] Step 5, adjusting the anchoring mesh corresponding to the long anchor cable with inconsistent attenuation, and returning to step 3;

[0011] Step six: complete the long anchor cable anchoring quality inspection.

[0012] Furthermore, the method of obtaining the anchoring mesh of the area to be measured and obtaining the long anchor cable sequence corresponding to the anchoring mesh includes:

[0013] If the area to be detected contains only one anchoring mesh, the long anchor cable sequence corresponding to the anchoring mesh is obtained according to the set order;

[0014] If the area to be detected contains multiple anchoring grids, the long anchor cable sequences corresponding to the anchoring grids are obtained respectively according to the set order.

[0015] Furthermore, the long anchor cable anchoring detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchoring quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data corresponding to the anchoring grid according to the initial detection index data of each long anchor cable, including:

[0016] The detection indicators include the elongation of the anchor cable. The initial length of the long anchor cable after the long anchor cable is installed is obtained to obtain the initial detection indicator data of the long anchor cable. According to the average value of the initial detection indicator data of each long anchor cable, the long anchor cable detection indicator data of the corresponding anchoring grid is obtained.

[0017] Furthermore, the long anchor cable anchoring detection device collects detection index data of the long anchor cable according to the detection index to obtain the long anchor cable detection index data within the detection period, including:

[0018] The elongation of the long anchor cable is obtained, and the detection index data of the long anchor cable within the detection period is obtained.

[0019] Furthermore, the detection index data of the long anchor cable within the detection period is compared with the detection index data of the long anchor cable of the corresponding anchoring mesh to obtain the detection index change of the long anchor cable, including:

[0020] According to the difference between the elongation of the long anchor cable within the detection period and the initial length of the long anchor cable, the detection index change of the long anchor cable is obtained.

[0021] Furthermore, according to the change in the detection index of each long anchor cable, if there is no abnormally long anchor cable, the change in the detection index of the corresponding anchoring mesh is obtained, including:

[0022] According to the change in the detection index of each long anchor cable, the average value of the detection index change is obtained. If the difference between the change in the detection index of the long anchor cable and the average value of the detection index change is greater than the preset difference threshold, there is no abnormally long anchor cable. Otherwise, the long anchor cable with the difference greater than the preset difference threshold is replaced.

[0023] Furthermore, the acquisition of the change in the detection index of each corresponding anchor mesh is respectively combined with the detection index data of the long anchor cable of the corresponding anchor mesh to obtain the attenuation of the long anchor cable of the corresponding anchor mesh, and the attenuation consistency of the long anchor cable of each corresponding anchor mesh is obtained, including:

[0024] According to the ratio of the change in the detection index of the corresponding anchoring mesh degree and the detection index data of the long anchor cable of the corresponding anchoring mesh degree, the attenuation degree of the long anchor cable of the corresponding anchoring mesh degree is obtained, and the attenuation average value is obtained according to the attenuation degree of the long anchor cables of each corresponding anchoring mesh degree. If the difference between the attenuation degree of the long anchor cable of the corresponding anchoring mesh degree and the attenuation average value is not greater than the set difference threshold, the attenuation degree is consistent; otherwise, for the long anchor cable of the corresponding anchoring mesh degree whose difference is greater than the set difference threshold, the anchoring mesh degree is adjusted.

[0025] A long anchor cable anchoring quality monitoring system, which applies the long anchor cable anchoring quality detection method, includes a cloud data server, a long anchor cable anchoring detection device, a communication device, a data processing device and a data storage device; the long anchor cable anchoring detection device, the communication device and the data storage device are respectively connected to the data processing device; the cloud data server is communicatively connected to the communication device.

[0026] The beneficial effects of the present invention are: improving detection accuracy: the present invention can accurately evaluate the anchoring quality of long anchor cables by real-time monitoring of key indicators such as the elongation of long anchor cables, combined with cloud data analysis and intelligent algorithms. Compared with traditional manual detection and simple physical testing methods, the present invention has higher detection accuracy and reliability.

[0027] Realize dynamic monitoring: The present invention realizes dynamic monitoring of the anchoring quality of long anchor cables by setting a detection cycle and regularly collecting and analyzing the detection index data of long anchor cables. This helps to timely discover potential safety hazards, take effective measures to prevent and deal with them, and ensure project safety.

[0028] Improve detection efficiency: The present invention uses cloud data servers and intelligent detection devices to realize automatic data collection, transmission and processing, greatly improving detection efficiency. At the same time, through the optimization of data analysis algorithms, it can realize rapid processing and analysis of large amounts of data to meet the needs of large-scale engineering detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a flow chart of a method for detecting the anchoring quality of a long anchor cable;

[0030] Figure 2 It is a principle schematic diagram of a long anchor cable anchoring quality monitoring system;

[0031] Figure 3 Schematic diagram of the principle of the long anchor cable anchoring detection device. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0033] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0034] like Figure 1 As shown, a method for detecting the anchoring quality of a long anchor cable comprises the following steps:

[0035] Step 1: Obtain the anchoring grid of the area to be tested, obtain the long anchor cable sequence corresponding to the anchoring grid, and the cloud data server generates a detection management container according to the long anchor cable anchoring quality detection task;

[0036] Step 2: The long anchor cable anchorage detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchorage quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data of the corresponding anchoring grid according to the initial detection index data of each long anchor cable;

[0037] Step three, according to the set detection cycle, the long anchor cable anchoring detection device collects detection index data of the long anchor cable according to the detection index, obtains the long anchor cable detection index data within the detection cycle, compares the long anchor cable detection index data within the detection cycle with the long anchor cable detection index data of the corresponding anchoring mesh, obtains the detection index change of the long anchor cable, and according to the detection index change of each long anchor cable, if there is no abnormal long anchor cable, obtains the detection index change of the corresponding anchoring mesh, and enters step four; otherwise, locates the abnormal long anchor cable and issues an alarm message;

[0038] Step 4, obtaining the change amount of the detection index of each corresponding anchor mesh, and respectively obtaining the attenuation degree of the long anchor cable of the corresponding anchor mesh with the detection index data of the long anchor cable of the corresponding anchor mesh, and obtaining the consistency of the attenuation degree of the long anchor cable of each corresponding anchor mesh. If they are consistent, proceed to step 6, otherwise proceed to step 5;

[0039] Step 5, adjusting the anchoring mesh corresponding to the long anchor cable with inconsistent attenuation, and returning to step 3;

[0040] Step six: complete the long anchor cable anchoring quality inspection.

[0041] The method of obtaining the anchoring mesh of the area to be measured and obtaining the long anchor cable sequence corresponding to the anchoring mesh comprises:

[0042] If the area to be detected contains only one anchoring mesh, the long anchor cable sequence corresponding to the anchoring mesh is obtained according to the set order;

[0043] If the area to be detected contains multiple anchoring grids, the long anchor cable sequences corresponding to the anchoring grids are obtained respectively according to the set order.

[0044] The long anchor cable anchoring detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchoring quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data corresponding to the anchoring grid according to the initial detection index data of each long anchor cable, including:

[0045] The detection indicators include the elongation of the anchor cable. The initial length of the long anchor cable after the long anchor cable is installed is obtained to obtain the initial detection indicator data of the long anchor cable. According to the average value of the initial detection indicator data of each long anchor cable, the long anchor cable detection indicator data of the corresponding anchoring grid is obtained.

[0046] The long anchor cable anchoring detection device collects detection index data of the long anchor cable according to the detection index, and obtains the long anchor cable detection index data within the detection period, including:

[0047] The elongation of the long anchor cable is obtained, and the detection index data of the long anchor cable within the detection period is obtained.

[0048] The long anchor cable detection index data within the detection period is compared with the long anchor cable detection index data of the corresponding anchoring mesh to obtain the detection index change of the long anchor cable, including:

[0049] According to the difference between the elongation of the long anchor cable within the detection period and the initial length of the long anchor cable, the detection index change of the long anchor cable is obtained.

[0050] The above-mentioned detection index change amount according to each long anchor cable, if there is no abnormally long anchor cable, then the detection index change amount corresponding to the anchoring mesh is obtained, including:

[0051] According to the change in the detection index of each long anchor cable, the average value of the detection index change is obtained. If the difference between the change in the detection index of the long anchor cable and the average value of the detection index change is greater than the preset difference threshold, there is no abnormally long anchor cable. Otherwise, the long anchor cable with the difference greater than the preset difference threshold is replaced.

[0052] The method of obtaining the change in the detection index of each corresponding anchoring mesh degree and respectively obtaining the attenuation of the long anchor cable of the corresponding anchoring mesh degree with the detection index data of the long anchor cable of the corresponding anchoring mesh degree, and obtaining the attenuation consistency of the long anchor cable of each corresponding anchoring mesh degree includes:

[0053] According to the ratio of the change in the detection index of the corresponding anchoring mesh degree and the detection index data of the long anchor cable of the corresponding anchoring mesh degree, the attenuation degree of the long anchor cable of the corresponding anchoring mesh degree is obtained, and the attenuation average value is obtained according to the attenuation degree of the long anchor cables of each corresponding anchoring mesh degree. If the difference between the attenuation degree of the long anchor cable of the corresponding anchoring mesh degree and the attenuation average value is not greater than the set difference threshold, the attenuation degree is consistent; otherwise, for the long anchor cable of the corresponding anchoring mesh degree whose difference is greater than the set difference threshold, the anchoring mesh degree is adjusted.

[0054] like Figure 2 As shown, a long anchor cable anchoring quality monitoring system applies the long anchor cable anchoring quality detection method, including a cloud data server, a long anchor cable anchoring detection device, a communication device, a data processing device and a data storage device; the long anchor cable anchoring detection device, the communication device and the data storage device are respectively connected to the data processing device; the cloud data server is communicatively connected to the communication device.

[0055] like Figure 3 As shown, the long anchor cable anchoring detection device includes a plurality of long anchor cable anchoring detectors; the plurality of long anchor cable anchoring detectors are respectively connected to the data processing device.

[0056] Specifically, a method for detecting the anchoring quality of a long anchor cable comprises the following steps:

[0057] Step 1: Get the anchoring grid of the area to be tested, and get the long anchor cable sequence corresponding to the anchoring grid. The cloud data server generates a detection management container according to the long anchor cable anchoring quality detection task. There are two specific cases:

[0058] (1) If the area to be inspected contains only one anchoring grid, the long anchor cable sequence corresponding to the anchoring grid is obtained according to the set order. When the area to be inspected contains only one anchoring grid, the arrangement and numbering of the long anchor cables are usually simpler. They can be directly numbered and sorted according to the set order (such as from left to right, from top to bottom, etc.) to obtain the long anchor cable sequence corresponding to the anchoring grid.

[0059] (2) If the area to be inspected contains multiple anchoring grids, the long anchor cable sequences corresponding to the anchoring grids are obtained according to the set order. In the case where the area to be inspected contains multiple anchoring grids, in order to better distinguish and manage long anchor cables with different anchoring grids, it is necessary to obtain the long anchor cable sequences corresponding to each anchoring grid according to the set rules (such as first classifying according to the type of anchoring grid, and then numbering and sorting in a specific order within each type).

[0060] Step 2: The long anchor cable anchorage detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchorage quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data of the corresponding anchoring mesh according to the initial detection index data of each long anchor cable. Among them, the detection index includes the elongation of the anchor cable, which specifically includes the following steps:

[0061] Get the initial length of the long anchor cable after installation and obtain the initial detection index data of the long anchor cable. After the long anchor cable is installed, its initial length needs to be measured and recorded as the basic data for subsequent detection. This step can be completed by using professional measuring tools or equipment to ensure the accuracy and reliability of the measurement results.

[0062] According to the average value of the initial detection index data of each long anchor cable, the detection index data of the long anchor cable corresponding to the anchor mesh is obtained. Since the long anchor cables under the same anchor mesh may be affected by similar geological conditions and external environment, their initial detection index data may have certain similarities. By averaging these data, the detection index data of the long anchor cable corresponding to the anchor mesh can be obtained as a reference for subsequent detection.

[0063] Step three, according to the set detection cycle, the long anchor cable anchor detection device collects detection index data of the long anchor cable according to the detection index, obtains the detection index data of the long anchor cable within the detection cycle, compares the detection index data of the long anchor cable within the detection cycle with the detection index data of the long anchor cable of the corresponding anchoring mesh, obtains the detection index change of the long anchor cable, and according to the detection index change of each long anchor cable, if there is no abnormal long anchor cable, obtains the detection index change of the corresponding anchoring mesh, and enters step four; otherwise, locates the abnormal long anchor cable and issues an alarm message. Specifically including the following steps:

[0064] Obtain the elongation of the long anchor cable and obtain the long anchor cable detection index data within the detection cycle. In each detection cycle, the long anchor cable anchoring detection device will measure and record the elongation of each long anchor cable to obtain the long anchor cable detection index data within the detection cycle. This step is the basis for the subsequent calculation of the change in the detection index.

[0065] According to the difference between the elongation of the long anchor cable in the detection period and the initial length of the long anchor cable, the change in the detection index of the long anchor cable is obtained. By comparing the elongation of the long anchor cable in the detection period with the initial length, the elongation change of the long anchor cable in the detection period, that is, the change in the detection index, can be calculated. This data reflects the performance changes of the long anchor cable during long-term use.

[0066] According to the change of the detection index of each long anchor cable, the average value of the change of the detection index is obtained. If the difference between the change of the detection index of the long anchor cable and the average value of the change of the detection index is greater than the preset difference threshold, there is no abnormal long anchor cable. Otherwise, the long anchor cable with the difference greater than the preset difference threshold is replaced. By averaging the change of the detection index of each long anchor cable under the same anchoring mesh, the average value of the change of the detection index of the anchoring mesh can be obtained. Then, the change of the detection index of each long anchor cable is compared with the average value. If the difference does not exceed the preset difference threshold, it is considered that the anchoring quality of the long anchor cable is normal; if the difference exceeds the preset difference threshold, it is considered that the long anchor cable may be abnormal and further inspection and processing are required, such as replacing the abnormal long anchor cable.

[0067] Step 4: Obtain the change in the detection index of each corresponding anchor mesh, and obtain the attenuation of the long anchor cable of the corresponding anchor mesh with the detection index data of the long anchor cable of the corresponding anchor mesh, and obtain the attenuation consistency of the attenuation of the long anchor cable of each corresponding anchor mesh. If they are consistent, proceed to step 6, otherwise proceed to step 5. Specifically including the following steps:

[0068] According to the ratio of the change in the detection index of the corresponding anchor mesh and the detection index data of the long anchor cable of the corresponding anchor mesh, the attenuation of the long anchor cable of the corresponding anchor mesh is obtained. The attenuation reflects the degree of performance degradation of the long anchor cable during long-term use. By calculating the ratio of the change in the detection index and the initial detection index data, the attenuation of the long anchor cable of the corresponding anchor mesh can be obtained.

[0069] According to the attenuation of the long anchor cables of each corresponding anchoring mesh, the attenuation average value is obtained. If the difference between the attenuation of the long anchor cables of the corresponding anchoring mesh and the attenuation average value is not greater than the set difference threshold, the attenuation is consistent. Otherwise, the anchoring mesh is adjusted for the long anchor cables of the corresponding anchoring mesh whose difference is greater than the set difference threshold. The attenuation average value can be obtained by averaging the attenuation of the long anchor cables of each corresponding anchoring mesh. Then, the attenuation of the long anchor cables of each corresponding anchoring mesh is compared with the average value. If the difference is not greater than the set difference threshold, it is considered that the attenuation of the long anchor cables of each corresponding anchoring mesh is consistent; if the difference is greater than the set difference threshold, it is considered that the anchoring quality of the long anchor cables of the corresponding anchoring mesh may be abnormal, and it is necessary to take measures such as adjusting the anchoring mesh.

[0070] Step 5: Adjust the anchoring mesh corresponding to the long anchor cable with inconsistent attenuation, and return to step 3. After adjusting the anchoring mesh of the long anchor cable with inconsistent attenuation, it is necessary to re-collect and compare the test index data to verify whether the adjustment effect meets the requirements. Therefore, it is necessary to return to step 3 and re-perform the relevant operations.

[0071] Step 6: Complete the long anchor cable anchorage quality inspection. After confirming that the attenuation of each long anchor cable of the corresponding anchoring mesh is consistent, it can be considered that the anchorage quality of the long anchor cable meets the requirements, and the long anchor cable anchorage quality inspection task is completed.

[0072] Example 1: Anchorage quality inspection of long anchor cables on mountain highways

[0073] In a mountain highway construction project, due to the complex terrain, a large number of long anchor cables are needed to ensure the stability of the roadbed and slopes. In order to ensure the quality of the project, the project team decided to adopt a long anchor cable anchoring quality detection method to conduct a comprehensive inspection and evaluation of all long anchor cables.

[0074] Implementation steps

[0075] Step 1: Obtain the anchoring grid of the area to be measured

[0076] The project team first conducted a detailed survey of the area to be tested and determined that there were two main anchoring grids in the area: one was a dense anchoring grid for slope reinforcement, and the other was a sparse anchoring grid for roadbed stabilization. According to the set order, the project team obtained the long anchor cable sequences corresponding to the two anchoring grids.

[0077] Step 2: Basic data collection

[0078] The long anchor cable anchoring detection device was deployed on site, and basic data of each long anchor cable was collected according to the detection indicators (mainly the elongation of the anchor cable) in the long anchor cable anchoring quality detection task. By measuring the initial length of the long anchor cable after installation, the initial detection indicator data of each long anchor cable was obtained. Then, the project team calculated the average value of the initial detection indicator data of each long anchor cable as the long anchor cable detection indicator data corresponding to the anchoring grid.

[0079] Step 3: Data collection and comparison of test indicators

[0080] According to the set inspection cycle (once a month), the long anchor cable anchoring inspection device once again collected the inspection index data of the long anchor cable, mainly measuring the elongation of the long anchor cable. The collected data was compared with the inspection index data of the long anchor cable of the corresponding anchoring mesh, and the change in the inspection index of the long anchor cable was obtained. After comparison and analysis, the project team found that the change in the inspection index of most long anchor cables was within the normal range, but the elongation of one long anchor cable increased abnormally.

[0081] Step 4: Exception handling and alarm

[0082] Based on the abnormally long anchor cable with abnormally increased elongation, the project team immediately located the anchor cable and issued an alarm message. At the same time, a detailed inspection of the abnormally long anchor cable was carried out and it was found that it was caused by the loosening of the anchor end. The project team repaired it in time and strengthened the monitoring of the area.

[0083] Step 5: Attenuation consistency check and adjustment

[0084] After eliminating abnormally long anchor cables, the project team continued to check the consistency of attenuation. By calculating the attenuation of the long anchor cables of each corresponding anchor mesh and comparing it with the average attenuation value, it was found that the attenuation consistency of the long anchor cables of most anchor meshes was good. However, the attenuation of the long anchor cables of one anchor mesh was significantly different from the average value, so the project team decided to adjust the anchor mesh and retest it.

[0085] Step 6: Complete the test

[0086] After many tests and adjustments, the project team finally completed the anchorage quality test of all long anchor cables. The test results show that the anchorage quality of all long anchor cables has met the design requirements, providing a strong guarantee for the safe operation of mountain highways.

[0087] Example 2: Anchorage quality inspection of long anchor cables in urban subway tunnels

[0088] In a certain city subway construction project, due to the complex strata through which the tunnel passes, long anchor cables are needed to reinforce the soil around the tunnel. In order to ensure the safety of tunnel construction and operation, the project team decided to adopt a long anchor cable anchoring quality inspection method to conduct a comprehensive inspection and evaluation of all long anchor cables.

[0089] Implementation steps

[0090] Step 1: Obtain the anchoring grid of the area to be measured

[0091] The project team conducted a detailed survey and analysis of the soil around the tunnel and determined that there was mainly one anchoring grid in the area. According to the set order, the project team obtained the long anchor cable sequence corresponding to this anchoring grid.

[0092] Step 2: Basic data collection

[0093] The long anchor cable anchoring detection device was installed at the tunnel construction site. According to the detection indicators in the long anchor cable anchoring quality detection task (mainly the anchor cable elongation and tension), basic data of each long anchor cable was collected. By measuring the initial length and tension value of the long anchor cable after installation, the initial detection index data of each long anchor cable was obtained. Then, the project team calculated the average value of the initial detection index data of each long anchor cable as the long anchor cable detection index data corresponding to the anchoring grid.

[0094] Step 3: Data collection and comparison of test indicators

[0095] According to the set inspection cycle (once a week), the long anchor cable anchoring inspection device collected the inspection index data of the long anchor cable, mainly measuring the elongation and tension value of the long anchor cable. The collected data was compared with the inspection index data of the long anchor cable of the corresponding anchoring mesh, and the change of the inspection index of the long anchor cable was obtained. After comparison and analysis, the project team found that the change of the inspection index of most long anchor cables was within the normal range.

[0096] Step 4: Attenuation consistency check

[0097] The project team then conducted a consistency check on the attenuation. By calculating the attenuation of the long anchor cables of each corresponding anchoring grid and comparing it with the average attenuation value, it was found that the attenuation consistency of the long anchor cables of all anchoring grids was good. This shows that the anchoring quality of the long anchor cables is stable overall.

[0098] Step 5: No need to adjust, go directly to step 6

[0099] Since the anchoring quality of all long anchor cables met the requirements and the attenuation was consistent, the project team did not need to make any adjustments and went directly to step six.

[0100] Step 6: Complete the test

[0101] The project team finally completed the anchorage quality test of all long anchor cables. The test results show that the anchorage quality of all long anchor cables has met the design requirements, providing a strong guarantee for the safe construction and operation of urban subway tunnels. At the same time, the project team also established a long anchor cable anchorage quality monitoring system to achieve real-time monitoring and early warning of the anchorage quality of long anchor cables.

Claims

1. A method for detecting the anchoring quality of a long anchor cable, characterized in that: The following steps are involved: Step 1: Obtain the anchoring grid of the area to be tested, obtain the long anchor cable sequence corresponding to the anchoring grid, and the cloud data server generates a detection management container according to the long anchor cable anchoring quality detection task; Step 2: The long anchor cable anchorage detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchorage quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data of the corresponding anchoring grid according to the initial detection index data of each long anchor cable; Step three, according to the set detection cycle, the long anchor cable anchoring detection device collects detection index data of the long anchor cable according to the detection index, obtains the long anchor cable detection index data within the detection cycle, compares the long anchor cable detection index data within the detection cycle with the long anchor cable detection index data of the corresponding anchoring mesh, obtains the detection index change of the long anchor cable, and according to the detection index change of each long anchor cable, if there is no abnormal long anchor cable, obtains the detection index change of the corresponding anchoring mesh, and enters step four; Otherwise, the abnormally long anchor cable is located and an alarm message is issued; Step 4, obtaining the change amount of the detection index of each corresponding anchor mesh, and respectively obtaining the attenuation degree of the long anchor cable of the corresponding anchor mesh with the detection index data of the long anchor cable of the corresponding anchor mesh, and obtaining the consistency of the attenuation degree of the long anchor cable of each corresponding anchor mesh. If they are consistent, proceed to step 6, otherwise proceed to step 5; Step 5, adjusting the anchoring mesh corresponding to the long anchor cable with inconsistent attenuation, and returning to step 3; Step 6: Complete the long anchor cable anchoring quality inspection; The method of obtaining the anchoring mesh of the area to be measured and obtaining the long anchor cable sequence corresponding to the anchoring mesh comprises: If the area to be detected contains only one anchoring mesh, the long anchor cable sequence corresponding to the anchoring mesh is obtained according to the set order; If the area to be detected contains multiple anchoring grids, the long anchor cable sequences corresponding to the anchoring grids are obtained according to the set order; The long anchor cable anchoring detection device collects basic data of each long anchor cable according to the detection index in the long anchor cable anchoring quality detection task, obtains the initial detection index data of each long anchor cable, and obtains the long anchor cable detection index data corresponding to the anchoring grid according to the initial detection index data of each long anchor cable, including: The detection indicators include the elongation of the anchor cable. The initial length of the long anchor cable after the long anchor cable is installed is obtained to obtain the initial detection indicator data of the long anchor cable. According to the average value of the initial detection indicator data of each long anchor cable, the long anchor cable detection indicator data of the corresponding anchoring grid is obtained.

2. A method for detecting the anchoring quality of a long anchor cable according to claim 1, characterized in that: The long anchor cable anchoring detection device collects detection index data of the long anchor cable according to the detection index, and obtains the long anchor cable detection index data within the detection period, including: The elongation of the long anchor cable is obtained, and the detection index data of the long anchor cable within the detection period is obtained.

3. A method for detecting the anchoring quality of a long anchor cable according to claim 2, characterized in that: The long anchor cable detection index data within the detection period is compared with the long anchor cable detection index data of the corresponding anchoring mesh to obtain the detection index change of the long anchor cable, including: According to the difference between the elongation of the long anchor cable within the detection period and the initial length of the long anchor cable, the detection index change of the long anchor cable is obtained.

4. A method for detecting the anchoring quality of a long anchor cable according to claim 3, characterized in that: The above-mentioned detection index change amount according to each long anchor cable, if there is no abnormally long anchor cable, then the detection index change amount corresponding to the anchoring mesh is obtained, including: According to the change in the detection index of each long anchor cable, the average value of the detection index change is obtained. If the difference between the change in the detection index of the long anchor cable and the average value of the detection index change is greater than the preset difference threshold, there is no abnormally long anchor cable. Otherwise, the long anchor cable with the difference greater than the preset difference threshold is replaced.

5. A method for detecting the anchoring quality of a long anchor cable according to claim 4, characterized in that: The method of obtaining the change in the detection index of each corresponding anchoring mesh degree and respectively obtaining the attenuation of the long anchor cable of the corresponding anchoring mesh degree with the detection index data of the long anchor cable of the corresponding anchoring mesh degree, and obtaining the attenuation consistency of the long anchor cable of each corresponding anchoring mesh degree includes: According to the ratio of the change in the detection index of the corresponding anchoring mesh degree and the detection index data of the long anchor cable of the corresponding anchoring mesh degree, the attenuation degree of the long anchor cable of the corresponding anchoring mesh degree is obtained, and the attenuation average value is obtained according to the attenuation degree of the long anchor cables of each corresponding anchoring mesh degree. If the difference between the attenuation degree of the long anchor cable of the corresponding anchoring mesh degree and the attenuation average value is not greater than the set difference threshold, the attenuation degree is consistent; otherwise, for the long anchor cable of the corresponding anchoring mesh degree whose difference is greater than the set difference threshold, the anchoring mesh degree is adjusted.

6. A long anchor cable anchoring quality monitoring system, characterized in that: A long anchor cable anchoring quality detection method according to any one of claims 1 to 5 is applied, comprising a cloud data server, a long anchor cable anchoring detection device, a communication device, a data processing device and a data storage device; the long anchor cable anchoring detection device, the communication device and the data storage device are respectively connected to the data processing device; the cloud data server is communicatively connected to the communication device.

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