Construction method for laying engineering construction cable

Abstract

The invention discloses a construction method for cable laying in engineering construction, and relates to the technical field of cable construction, and the construction method for cable laying in engineering construction comprises the following steps: 1, construction preparation; 2, checking before laying; step 3, cable laying; step 4, arranging and binding; step 5, manufacturing and installing a cable head; step 6, cable marking; and step 7, acceptance recording. According to the method, a cable laying three-dimensional model with the precision of + / -0.1 mm is established through Autodesk Revit software, and a path is optimized in advance; through cooperation of the intelligent laying robot with the load capacity larger than or equal to 10 kN and the laser locator with the positioning error smaller than or equal to + / -2 mm, robot and BIM path alignment is achieved, the problems that traditional manual planning is low in positioning precision and unreasonable in path are solved, and cable damage is reduced from the source.

Description

Technical Field

[0001] This invention relates to the field of cable construction technology, and specifically to a construction method for laying cables in engineering construction. Background Technology

[0002] Cable laying is a core component of power engineering, building electrical systems, and industrial facility construction. Its construction quality directly determines the safety and stability of power transmission and the overall lifecycle maintenance costs of the equipment. With accelerated urbanization and the upgrading of high-end manufacturing industries, cable laying scenarios are becoming increasingly complex—multiple professional pipelines intertwine in underground utility tunnels, high-altitude laying faces strong winds and temperature differences, and high-voltage cables require stringent laying precision. Traditional construction methods are no longer adequate for the refined and digitalized demands of modern engineering. Specific technical shortcomings are concentrated in the following aspects: Traditional cable laying methods in engineering construction have significant drawbacks. The planning phase relies on two-dimensional drawings and manual experience, lacking three-dimensional modeling and intelligent equipment collaboration. This easily leads to unreasonable path design, large positioning errors, and deviations in the laying trajectory, resulting in high rework rates. The entire process lacks standardized quantitative parameters, and manual operation causes quality control issues in cable pre-stretching, tension and speed matching, layout and binding, and cable head fabrication. Furthermore, the lack of specific measures for harsh environments easily leads to potential hazards such as insulation failure and seal damage. Acceptance relies on paper records, resulting in inaccurate or missing core parameters. Cable markings lack weather resistance and waterproofing and are not linked to key data and BIM models. The absence of a digital traceability system leads to low efficiency in troubleshooting during the operation and maintenance phase. Summary of the Invention

[0003] This invention provides a construction method for laying cables in engineering construction to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A construction method for laying engineering construction cables, comprising the following steps: Step 1: Construction Preparation; Step 2: Pre-laying inspection; Step 3: Cable laying; Step 4: Arrange and tie the fabric; Step 5: Cable termination fabrication and installation; Step Six: Cable Labeling; Step 7: Acceptance Record.

[0005] A further improvement to the technical solution of the present invention is that step one further includes the following steps: A1: A 3D model of the cable laying is established using Building Information Modeling (BIM) software. Cable parameters and laying path parameters are input. Among the laying path parameters, the turning radius R ≥ 15D (D is the outer diameter of the cable, unit: mm) and the path slope ≤ 5°. The cable is pre-stretched using a constant tension and uniform speed for a set time, with the stretch amount controlled between 0.8% and 1.0%. The pre-treatment environment temperature is 15℃-25℃ and the relative humidity is ≤ 60%. An intelligent laying robot, a tension control system, and a laser positioning device are prepared. The intelligent laying robot has a load capacity ≥ 10kN and an adjustable laying speed range of 0.8~1.2m / s. The tension control system has a control accuracy of ±0.1kN, and the laser positioning device has a positioning error ≤ ±2mm. A2: The BIM software mentioned is Autodesk Revit software, with a 3D model accuracy of ±0.1mm, and a constant tensile force of 5kN and a uniform stretching time of 2h for the pre-stretching treatment.

[0006] A further improvement to the technical solution of the present invention is that step two further includes the following steps: B1: Perform visual inspection, internal defect detection, and insulation resistance testing on the cable body. For visual inspection, the depth of scratches on the insulation layer should be ≤0.1δ (δ is the cable insulation layer thickness, unit: mm), and the diameter of bulges should be ≤2mm. For internal defect detection, use an ultrasonic flaw detector with a defect detection rate ≥99% and defect size identification accuracy ≥0.5mm. 2 Insulation resistance testing is performed using a 2500V megohmmeter. The insulation resistance value of 10kV cable is ≥1000MΩ at 20℃±5℃. The flatness of the laying path is tested and obstacles are cleared. The flatness deviation is ≤3mm / m. There are no hard debris with a diameter ≥5mm in the path and no sharp protrusions with a height ≤1mm at the bends. B2: In B1, the visual inspection uses a high-definition industrial camera with a resolution of 12 million pixels to photograph the cable surface, and the ultrasonic flaw detector for internal defect detection has a detection frequency of 2.5 to 5 MHz. B3: The laying path inspection in B1 also includes humidity detection. When the ambient humidity of the path is ≥75%, a moisture-proof mat is laid on the surface of the path. The thickness of the moisture-proof mat is ≥2mm and the water absorption rate is ≤0.5%.

[0007] A further improvement to the technical solution of the present invention is that step three further includes the following steps: C1: Align the intelligent laying robot with the BIM model path using a laser positioning device, with a positioning deviation ≤ ±3mm; Set the tension according to the cable diameter D: 1.5-2kN when D≤50mm, 2-3kN when 50mm<D≤100mm, and match the laying speed with the tension: 0.8~1.0m / s when tension is 1.5-2kN, and 1.0~1.2m / s when tension is 2-3kN; Stop the machine for 15min to cool down every 200m when the ambient temperature is ≥35℃; Activate the windproof guide device and ensure cable offset ≤ ±5mm when the outdoor wind speed is ≥5m / s; Upload data to the BIM model in real time using the robot's built-in tension sensor (accuracy ±0.05kN) and displacement sensor (accuracy ±0.1mm); The system will automatically stop and alarm when the tension exceeds the set value by 10% or the displacement deviation exceeds ±5mm. C2: The path flatness detection in C1 uses a laser flatness detector. When the windproof guide device is activated, the cable offset is monitored in real time. When the offset is close to ±5mm, the guide angle is adjusted. The intelligent laying robot is also equipped with a temperature sensor to monitor the cable surface temperature in real time. When the temperature exceeds 60℃, the machine stops to cool down. Laying can continue only when the temperature drops below 40℃.

[0008] A further improvement to the technical solution of the present invention is that step four further includes the following steps: D1: Determine the binding spacing based on the cable diameter D. When D≤50mm, the spacing is 0.8m±50mm; when 50mm<D≤100mm, the spacing is 1.2m±50mm. Use nylon cable ties with a flame retardant rating of V0 and a tensile strength ≥150N. The cable tie width should be ≥1 / 3 of the cable diameter. Use an electric cable tie gun to control the binding force at 50~80N, ensuring that the cable deformation is ≤0.5mm and the cable tie breaking force is ≥200N. Use a laser plumb line to ensure that the verticality deviation of the cable layout is ≤±1° and the parallelism deviation with the laying path is ≤±2mm / m. D2: When the electric cable tie gun in D1 is working, it provides real-time feedback on the tightening force data. When the tightening force is lower than 50N or higher than 80N, it automatically adjusts the output force. After the cable ties are pasted, the binding spacing is checked a second time by a laser rangefinder to ensure that the spacing deviation does not exceed ±50mm.

[0009] A further improvement to the technical solution of the present invention is that step five further includes the following steps: E1: Cut the cable with a cable cutter, with a cutting accuracy of ±0.5mm and a perpendicularity deviation between the cut surface and the cable axis of ≤±0.5°; use wire strippers to peel off the insulation layer, with the peeling length determined according to the cable head model, and the length of the burr on the edge of the insulation layer after peeling ≤0.2mm; select a prefabricated cable head with an insulation layer thickness of 5-8mm and a sealing ring compression rate of 30%-40%, and use a constant temperature heating gun with a temperature control accuracy of ±5℃ to heat and cure it, with a heating temperature of 120-150℃ and a heating time adjusted according to the diameter of the cable head (increase the heating time by 2min for every 10mm increase in diameter); use the air pressure test method to test the sealing performance, introduce 0.3MPa compressed air and hold the pressure for 30min, with a pressure drop of ≤0.02MPa; E2: The insulation stripping length of the 10kV cable in D1 is 150mm ± 5mm. The temperature is recorded every 5 minutes during the heating process of the constant temperature heating gun to ensure that the temperature fluctuation does not exceed ± 5℃.

[0010] A further improvement to the technical solution of the present invention is that step six further includes the following steps: F1: Employ RFID electronic tags with a temperature resistance range of -40℃ to 85℃, an IP67 waterproof rating, and a reading distance of ≥3m, in conjunction with QR code physical tags with a scratch resistance rating of ≥4H; affix one tag to each end of every cable segment (150mm ±10mm from the cable head), and one tag every 50m in the middle segment; the parallelism deviation between the tag and the cable axis should be ≤±1°; the tag should contain cable type, laying date, tension data, insulation resistance value information, and be linked to the BIM model data. A further improvement to the technical solution of the present invention is that step seven further includes the following steps: G1: The laying parameters (tension ±0.05kN, speed ±0.1m / s, displacement deviation ±0.1mm) and quality parameters (cable damage rate ≤0.5%, binding spacing ±50mm, cable head sealing pressure drop ≤0.02MPa, 10kV cable insulation resistance ≥1000MΩ) are collected through a digital acceptance system; an electronic acceptance report containing parameter curves and inspection photos is automatically generated, and the report number is associated with the cable tag RFID code; the acceptance is deemed qualified when all parameters meet the set standards and no single parameter exceeds the tolerance. G2: The parameter curves in G1 include tension-length curves and speed-time curves. The inspection photos include cable appearance photos, ultrasonic flaw detection images, and cable head sealing inspection photos. The electronic acceptance report is also associated with the construction team number and equipment number.

[0011] A further improvement to the technical solution of this invention is as follows:

[0012] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows: 1. This invention provides a construction method for cable laying in engineering construction. It uses Autodesk Revit software to create a three-dimensional cable laying model with an accuracy of ±0.1mm to optimize the path in advance. Combined with an intelligent laying robot with a load capacity of ≥10kN and a laser positioning instrument with a positioning error of ≤±2mm, the robot and the BIM model are aligned, which solves the problems of low positioning accuracy and unreasonable path in traditional manual planning and reduces cable damage from the source. 2. This invention provides a construction method for laying cables in engineering construction. During the construction preparation stage, the cable pre-tension is controlled at 0.8%–1.0%, and the ambient temperature and humidity are maintained at 15℃–25℃ / ≤60%. Before laying, multi-dimensional cable inspection is performed using a 12-megapixel camera, a 2.5-5MHz ultrasonic flaw detector, and a 2500V megohmmeter. During laying, tension and speed are matched according to cable diameter, and measures for shutdown for cooling and wind protection are developed for harsh environments. In the binding and cable head fabrication stages, the binding force, cutting accuracy, and sealing test air pressure are precisely controlled. Parameterized management throughout the process avoids random errors from manual operation, ensuring stable construction quality. 3. This invention provides a construction method for cable laying in engineering construction. By using RFID electronic tags with a temperature resistance of -40℃ to 85℃ and a waterproof IP67 rating, and QR code tags with a scratch resistance of ≥4H, key cable information is recorded and linked to the BIM model to achieve full life cycle traceability. During the acceptance phase, parameters are collected through a digital system, and an electronic report containing parameter curves and test photos is automatically generated. The report number is linked to the RFID code and the construction / equipment number, solving the problems of chaotic and difficult traceability in traditional acceptance records, and providing accurate data support for later operation and maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the steps of the present invention. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to embodiments: Example 1 like Figure 1 As shown, the present invention provides a construction method for laying engineering construction cables, which includes the following steps: Step 1: Construction Preparation; Step 2: Pre-laying inspection; Step 3: Cable laying; Step 4: Arrange and tie the fabric; Step 5: Cable termination fabrication and installation; Step Six: Cable Labeling; Step 7: Acceptance Record.

[0015] Step one also includes the following steps: A1: Use Building Information Modeling (BIM) software to create a 3D model of the cable laying, input cable parameters and laying path parameters. In the laying path parameters, the turning radius R ≥ 15D (D is the cable outer diameter, unit: mm) and the path slope ≤ 5°; perform pre-stretching treatment on the cable, using constant tension and uniform speed for a set time, with the stretch amount controlled between 0.8% and 1.0%. The pre-treatment environment temperature is 15℃-25℃ and the relative humidity is ≤ 60%; prepare an intelligent laying robot, a tension control system, and a laser positioning device. The intelligent laying robot has a load capacity ≥ 10kN and an adjustable laying speed range of 0.8~1.2m / s. The tension control system has a control accuracy of ±0.1kN, and the laser positioning device has a positioning error ≤ ±2mm. A2: The BIM software is Autodesk Revit, the accuracy of the 3D model is ±0.1mm, the constant tension of the pre-stretching treatment is 5kN, and the uniform stretching time is 2h; Step four also includes the following steps: D1: Determine the binding spacing based on the cable diameter D. When D≤50mm, the spacing is 0.8m±50mm; when 50mm<D≤100mm, the spacing is 1.2m±50mm. Use nylon cable ties with a flame retardant rating of V0 and a tensile strength ≥150N. The cable tie width should be ≥1 / 3 of the cable diameter. Use an electric cable tie gun to control the binding force at 50~80N, ensuring that the cable deformation is ≤0.5mm and the cable tie breaking force is ≥200N. Use a laser plumb line to ensure that the verticality deviation of the cable layout is ≤±1° and the parallelism deviation with the laying path is ≤±2mm / m. D2: When the electric cable tie gun in D1 is working, it provides real-time feedback on the tightening force. It automatically adjusts the output force when the tightening force is below 50N or above 80N. Furthermore, after the cable ties are applied, a laser rangefinder is used for secondary verification of the binding spacing to ensure that the spacing deviation does not exceed ±50mm. Step five also includes the following steps: E1: Cut the cable with a cable cutter, with a cutting accuracy of ±0.5mm and a perpendicularity deviation between the cut surface and the cable axis of ≤±0.5°; use wire strippers to peel off the insulation layer, with the peeling length determined according to the cable head model, and the length of the burr on the edge of the insulation layer after peeling ≤0.2mm; select a prefabricated cable head with an insulation layer thickness of 5-8mm and a sealing ring compression rate of 30%-40%, and use a constant temperature heating gun with a temperature control accuracy of ±5℃ to heat and cure it, with a heating temperature of 120-150℃ and a heating time adjusted according to the diameter of the cable head (increase the heating time by 2min for every 10mm increase in diameter); use the air pressure test method to test the sealing performance, introduce 0.3MPa compressed air and hold the pressure for 30min, with a pressure drop of ≤0.02MPa; E2: The insulation stripping length of the 10kV cable in D1 is 150mm ± 5mm. The temperature is recorded every 5 minutes during the heating process of the constant temperature heating gun to ensure that the temperature fluctuation does not exceed ± 5℃.

[0016] In this embodiment, meticulous management during the construction preparation phase optimizes the laying path and eliminates internal cable stress in advance. This is achieved by employing an intelligent laying robot with a load capacity ≥10kN and an adjustable laying speed of 0.8~1.2m / s, a tension control system with a control accuracy of ±0.1kN, and a laser positioning device with a positioning error ≤±2mm, laying a high-precision equipment and path foundation for subsequent construction. During the cable arrangement and binding stage, binding spacing is set according to cable diameter D. Nylon cable ties with a flame-retardant rating of V0, tensile strength ≥150N, and width ≥D / 3 are used. An electric cable tie gun precisely controls the binding force to 50~80N, and secondary verification with a laser plumb line and laser rangefinder ensures that the cable arrangement verticality deviation is ≤±1° and the parallelism deviation is ≤±2mm / m, avoiding cable damage caused by loose or overly tight binding. In cable head fabrication, a cable cutter with a cutting accuracy of ±0.5mm and a verticality deviation of ≤±0.5° is used to process the cable. For 10kV cables, the insulation stripping length is precisely controlled at 150mm±5mm. This is combined with prefabricated cable heads with an insulation thickness of 5-8mm and a sealing ring compression rate of 30%-40%. A constant-temperature heating gun with a temperature control accuracy of ±5℃ is used to adjust the heating time according to the cable head diameter, and the temperature is recorded in real time. A sealing test is then conducted by holding the cable head under 0.3MPa compressed air for 30 minutes. This significantly improves the insulation reliability and waterproof performance of the cable head. Overall, this embodiment, through parameterized control of key processes, establishes a basic quality assurance system from construction preparation and layout to cable head fabrication, effectively reducing potential risks such as stress damage and insulation failure during subsequent laying and operation.

[0017] Example 2 like Figure 1 As shown, based on Embodiment 1, the present invention provides a technical solution: Step three also includes the following steps: C1: Align the intelligent laying robot with the BIM model path using a laser positioning device, with a positioning deviation ≤ ±3mm; Set the tension according to the cable diameter D: 1.5-2kN when D≤50mm, 2-3kN when 50mm<D≤100mm, and match the laying speed with the tension: 0.8~1.0m / s when tension is 1.5-2kN, and 1.0~1.2m / s when tension is 2-3kN; Stop the machine for 15min to cool down every 200m when the ambient temperature is ≥35℃; Activate the windproof guide device and ensure cable offset ≤ ±5mm when the outdoor wind speed is ≥5m / s; Upload data to the BIM model in real time using the robot's built-in tension sensor (accuracy ±0.05kN) and displacement sensor (accuracy ±0.1mm); The system will automatically stop and alarm when the tension exceeds the set value by 10% or the displacement deviation exceeds ±5mm. C2: C1 uses a laser flatness detector to detect the flatness of the path. When the windproof guide device is activated, it monitors the cable offset in real time. When the offset is close to ±5mm, the guide angle is adjusted. The intelligent laying robot is also equipped with a temperature sensor to monitor the cable surface temperature in real time. When the temperature exceeds 60℃, it stops to cool down. Laying can continue only when the temperature drops below 40℃. Step six also includes the following steps: F1: Use RFID electronic tags with a temperature range of -40℃ to 85℃, a waterproof rating of IP67, and a reading distance of ≥3m, in conjunction with QR code physical tags with a scratch resistance rating of ≥4H; affix one tag to each end of each cable segment (150mm±10mm from the cable head), and affix one tag every 50m in the middle segment, with the tag's parallelism deviation from the cable axis ≤±1°; the tag contains information such as cable type, laying date, tension data, and insulation resistance value, and is associated with the BIM model data.

[0018] In this embodiment, by precisely upgrading the cable laying process, a laser positioning device is used to align the intelligent laying robot with the BIM model path. Tension and laying speed are matched according to cable diameter D, avoiding cable stretching deformation caused by tension overload or speed imbalance. Simultaneously, specific measures are developed for harsh environments such as high temperatures and strong winds. Combined with the robot's built-in high-precision sensors that upload data to the BIM model in real time, automatic shutdown alarms are triggered when tension exceeds the set value by 10% or displacement deviation is ±5mm, dynamically mitigating cable damage caused by environmental and parameter anomalies. In the cable marking process, RFID electronic tags with a temperature resistance of -40℃ to 85℃, an IP67 waterproof rating, and a reading distance of ≥3m are used, along with QR code physical tags with a scratch resistance rating of ≥4H. These tags are affixed in the specified positions, ensuring parallelism deviation ≤±1°. Cable model, laying date, tension data, and other information are entered into the tags and linked to the BIM model. This achieves both weather resistance and durability of the markings and establishes a digital traceability channel for the entire cable lifecycle, facilitating rapid retrieval of key parameters during subsequent maintenance. Based on Example 1, this embodiment adds the ability to dynamically control and digitally identify the laying process, further improving the safety, stability and traceability of cable laying, and reducing sudden failures during construction and blind spots in later operation and maintenance.

[0019] Example 3 like Figure 1 As shown, based on Embodiment 2, the present invention provides a technical solution: Step two also includes the following steps: B1: Perform visual inspection, internal defect detection, and insulation resistance testing on the cable body. For visual inspection, the depth of scratches on the insulation layer should be ≤0.1δ (δ is the cable insulation layer thickness, unit: mm), and the diameter of bulges should be ≤2mm. For internal defect detection, use an ultrasonic flaw detector with a defect detection rate ≥99% and defect size identification accuracy ≥0.5mm. 2 Insulation resistance testing is performed using a 2500V megohmmeter. The insulation resistance value of 10kV cable is ≥1000MΩ at 20℃±5℃. The flatness of the laying path is tested and obstacles are cleared. The flatness deviation is ≤3mm / m. There are no hard debris with a diameter ≥5mm in the path and no sharp protrusions with a height ≤1mm at the bends. B2: In B1, the visual inspection uses a high-definition industrial camera with a resolution of 12 megapixels to photograph the cable surface, and the ultrasonic flaw detector for internal defect detection has a detection frequency of 2.5-5MHz. B3: The installation path inspection in B1 also includes humidity testing. When the ambient humidity of the path is ≥75%, a moisture-proof mat layer shall be laid on the path surface. The moisture-proof mat layer shall be ≥2mm thick and have a water absorption rate ≤0.5%. Step seven also includes the following steps: G1: Collect laying parameters (tension ±0.05 kN, speed ±0.1 m / s, displacement deviation ±0.1 mm) and quality parameters (cable damage rate ≤0.5%, lashing spacing ±50 mm, air pressure drop of cable head sealing ≤0.02 MPa, insulation resistance of 10 kV cable ≥1000 MΩ) through the digital acceptance system; automatically generate an electronic acceptance report containing parameter curves and inspection photos, with the report number associated with the cable label RFID code; determine it as qualified for acceptance when all parameters meet the set standards and there is no single parameter exceeding the tolerance. G2: The parameter curves in G1 include tension-length curve and speed-time curve, and the inspection photos include cable appearance photos, ultrasonic flaw detection images, and cable head sealing inspection photos. The electronic acceptance report is also associated with the construction team number and equipment number.

[0020] In this embodiment, through the comprehensive inspection in the pre-laying inspection link, multi-dimensional quality control is implemented for the cable body: use a 12-million-pixel high-definition industrial camera to check the appearance, a 2.5 - 5 MHz ultrasonic flaw detector to detect internal defects, and a 2500 V megohmmeter to test the insulation resistance, eliminating potential quality hazards of the cable from the inside to the outside; at the same time, conduct flatness detection and obstacle cleaning on the laying path, and lay a moisture-proof cushion with a thickness ≥2 mm and water absorption rate ≤0.5% for scenarios with humidity ≥75%, eliminating the influence of the path environment on the laying quality from the source. In the acceptance record link, accurately collect laying parameters and quality parameters through the digital acceptance system, automatically generate an electronic acceptance report containing tension-length / speed-time curves and inspection photos, and associate the report number with the cable RFID tag, construction team number, and equipment number, realizing the standardization, digitization, and traceability of responsibilities in the acceptance process, ensuring that it is determined as qualified when all parameters meet the set standards. Based on Embodiment 2, this embodiment constructs a complete quality control closed-loop of "comprehensive pre-event inspection - dynamic in-process control - digital post-event acceptance", effectively avoiding potential early-stage hazards and acceptance omissions, comprehensively ensuring the overall reliability and compliance of cable laying in engineering construction, and providing full-process technical support for the long-term safe and stable operation of the cable.

[0021] [[ID=

Claims

1. A construction method for laying cables in engineering construction, characterized in that: The construction method for laying cables in engineering construction includes the following steps: Step 1: Construction Preparation; Step 2: Pre-laying inspection; Step 3: Cable laying; Step 4: Arrange and tie the fabric; Step 5: Cable termination fabrication and installation; Step Six: Cable Labeling; Step 7: Acceptance Record.

2. The construction method for laying engineering construction cables according to claim 1, characterized in that: Step one also includes the following steps: A1: A 3D model of the cable laying is established using Building Information Modeling (BIM) software. Cable parameters and laying path parameters are input. Among the laying path parameters, the turning radius R ≥ 15D (D is the outer diameter of the cable, unit: mm) and the path slope ≤ 5°. The cable is pre-stretched using a constant tension and uniform speed for a set time. The stretching amount is controlled between 0.8% and 1.0%. The pre-treatment environment temperature is 15℃ to 25℃ and the relative humidity is ≤ 60%. An intelligent laying robot, a tension control system, and a laser positioning device are prepared. The intelligent laying robot has a load capacity ≥ 10kN and an adjustable laying speed range of 0.8 to 1.2m / s. The tension control system has a control accuracy of ±0.1kN, and the laser positioning device has a positioning error ≤ ±2mm. A2: The BIM software mentioned is Autodesk Revit software, with a 3D model accuracy of ±0.1mm, and a constant tensile force of 5kN and a uniform stretching time of 2h for the pre-stretching treatment.

3. The construction method for laying engineering construction cables according to claim 1, characterized in that: Step two also includes the following steps: B1: Perform visual inspection, internal defect detection, and insulation resistance testing on the cable body. For visual inspection, the depth of scratches on the insulation layer should be ≤0.1δ (δ is the cable insulation layer thickness, unit: mm), and the diameter of bulges should be ≤2mm. For internal defect detection, use an ultrasonic flaw detector with a defect detection rate ≥99% and defect size identification accuracy ≥0.5mm. 2 Insulation resistance testing is performed using a 2500V megohmmeter. The insulation resistance value of 10kV cable is ≥1000MΩ at 20℃±5℃. The flatness of the laying path is tested and obstacles are cleared. The flatness deviation is ≤3mm / m. There are no hard debris with a diameter ≥5mm in the path and no sharp protrusions with a height ≤1mm at the bends. B2: In B1, the visual inspection uses a high-definition industrial camera with a resolution of 12 million pixels to photograph the cable surface, and the ultrasonic flaw detector for internal defect detection has a detection frequency of 2.5 to 5 MHz. B3: The laying path inspection in B1 also includes humidity detection. When the ambient humidity of the path is ≥75%, a moisture-proof mat is laid on the surface of the path. The thickness of the moisture-proof mat is ≥2mm and the water absorption rate is ≤0.5%.

4. The construction method for laying engineering construction cables according to claim 1, characterized in that: The third step also Includes the following steps: C1: Align the intelligent laying robot with the BIM model path using a laser positioning device, with a positioning deviation ≤ ±3mm; Set the tension according to the cable diameter D: 1.5-2kN when D≤50mm, 2-3kN when 50mm<D≤100mm, and match the laying speed with the tension: 0.8~1.0m / s when tension is 1.5-2kN, and 1.0~1.2m / s when tension is 2-3kN; Stop the machine for 15min to cool down every 200m when the ambient temperature is ≥35℃; Activate the windproof guide device and ensure cable offset ≤ ±5mm when the outdoor wind speed is ≥5m / s; Upload data to the BIM model in real time using the robot's built-in tension sensor (accuracy ±0.05kN) and displacement sensor (accuracy ±0.1mm); The system will automatically stop and alarm when the tension exceeds the set value by 10% or the displacement deviation exceeds 5mm. C2: The path flatness detection in C1 uses a laser flatness detector. When the windproof guide device is activated, the cable offset is monitored in real time. When the offset is close to 5mm, the guide angle is adjusted. The intelligent laying robot is also equipped with a temperature sensor to monitor the cable surface temperature in real time. When the temperature exceeds 60℃, the machine stops to cool down. Laying can continue only when the temperature drops below 40℃.

5. The construction method for laying engineering construction cables according to claim 1, characterized in that: Step four also includes the following steps: D1: Determine the binding spacing based on the cable diameter D. When D≤50mm, the spacing is 0.8m±0.05m; when 50mm<D≤100mm, the spacing is 1.2m±0.05m. Use nylon cable ties with a flame retardant rating of V0 and a tensile strength ≥150N. The cable tie width should be ≥1 / 3 of the cable diameter. Use an electric cable tie gun to control the binding force at 50~80N, ensuring that the cable deformation is ≤0.5mm and the cable tie breaking force is ≥200N. Use a laser plumb line to ensure that the verticality deviation of the cable layout is ≤±1° and the parallelism deviation with the laying path is ≤±2mm / m. D2: When the electric cable tie gun in D1 is working, it provides real-time feedback on the tightening force data. When the tightening force is lower than 50N or higher than 80N, it automatically adjusts the output force. After the cable tie is pasted, the binding spacing is checked a second time by a laser rangefinder to ensure that the spacing deviation does not exceed 0.05m.

6. The construction method for laying engineering construction cables according to claim 1, characterized in that: Step five also includes the following steps: E1: Cut the cable with a cable cutter, with a cutting accuracy of ±0.5mm and a perpendicularity deviation between the cut surface and the cable axis of ≤±0.5°; use wire strippers to peel off the insulation layer, with the peeling length determined according to the cable head model, and the length of the burr on the edge of the insulation layer after peeling ≤0.2mm; select a prefabricated cable head with an insulation layer thickness of 5-8mm and a sealing ring compression rate of 30%-40%, and use a constant temperature heating gun with a temperature control accuracy of ±5℃ to heat and cure it, with a heating temperature of 120-150℃ and a heating time adjusted according to the diameter of the cable head (increase the heating time by 2min for every 10mm increase in diameter); use the air pressure test method to test the sealing performance, introduce 0.3MPa compressed air and hold the pressure for 30min, with a pressure drop of ≤0.02MPa; E2: In D1, the insulation stripping length of the 10kV cable is 150mm ± 5mm; the temperature is recorded every 5 minutes during the heating process of the constant temperature heating gun to ensure that the temperature fluctuation does not exceed ± 5℃.

7. The construction method for laying engineering construction cables according to claim 1, characterized in that: The sixth step also Includes the following steps: F1: Use RFID electronic tags with a temperature range of -40℃ to 85℃, a waterproof rating of IP67, and a reading distance of ≥3m, in conjunction with QR code physical tags with a scratch resistance rating of ≥4H; affix one tag to each end of each cable segment (150mm±10mm from the cable head), and affix one tag every 50m in the middle segment, with the tag's parallelism deviation from the cable axis ≤±1°; the tag contains information such as cable type, laying date, tension data, and insulation resistance value, and is associated with the BIM model data.

8. The construction method for laying engineering construction cables according to claim 1, characterized in that: Step seven also includes the following steps: G1: The laying parameters (tension ±0.05kN, speed ±0.1m / s, displacement deviation ±0.1mm) and quality parameters (cable damage rate ≤0.5%, binding spacing ±50mm, cable head sealing pressure drop ≤0.02MPa, 10kV cable insulation resistance ≥1000MΩ) are collected through a digital acceptance system; an electronic acceptance report containing parameter curves and inspection photos is automatically generated, and the report number is associated with the cable tag RFID code; the acceptance is deemed qualified when all parameters meet the set standards and no single parameter exceeds the tolerance. G2: The parameter curves in G1 include tension-length curves and speed-time curves. The inspection photos include cable appearance photos, ultrasonic flaw detection images, and cable head sealing inspection photos. The electronic acceptance report is also associated with the construction team number and equipment number.

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