Safety assessment system for hydropower station dam construction engineering project

Abstract

The invention, which relates to the engineering safety system field, discloses a hydropower station dam construction engineering project safety evaluation system comprising a plurality of monitoring modules, a fitting unit, a distance measurement unit, a calculation unit, a track acquisition unit, an analysis unit and a safety evaluation unit. According to the system, the predicted swing amplitude value of the hanging cage can be predicted and obtained, then safety prediction and evaluation are carried out according to the predicted swing amplitude value, compared with traditional real-time swing amplitude, the predicted swing amplitude of the hanging cage can be predicted and obtained in advance, then corresponding safety protection is carried out in advance, and safety is higher.

Description

Technical Field

[0001] The invention relates to the field of engineering safety systems, and in particular to a safety assessment system for a hydropower station dam construction project. Background Art

[0002] One of the important engineering projects in the construction process of large hydropower stations is dam pouring. The dam pouring project of large hydropower stations has the problems of long construction period and large engineering volume, and requires a large amount of concrete pouring.

[0003] Usually, hydropower stations are built in river valleys. When pouring the dam of a hydropower station in a river valley, a cable crane is used to lift the hanging tank, and the concrete is loaded in the hanging tank for transportation. The cable crane is an important equipment in the dam pouring process, responsible for lifting the dam concrete and equipment materials. Wind protection is a relatively important safety measure during the dam pouring process. Since hydropower stations are usually built in river valleys, which are prone to strong winds due to their narrow terrain, the hanging tank of the cable crane is usually lifted by a longer cable, which is prone to large swings in windy weather, and safety accidents are prone to occur under large swings. Therefore, it is necessary to conduct a safety assessment of the cable crane lifting in windy weather.

[0004] The safety assessment method in the prior art is to calculate the swing of the cable crane hoisting object, and then judge whether it is safe based on the swing. For example, the public patent CN111606215A has a technical solution: calculate the real-time swing of the hoisting object relative to the cable crane hook based on wind speed, wind direction, air density, wind-exposed area of ​​the hoisting object and the angle. This technical solution can calculate the real-time swing, but the solution has the following defects: this solution detects the real-time wind speed, that is, the real-time wind speed on the cable crane is detected, and then the real-time swing is calculated based on the real-time wind speed. However, the technical solution will have the following problems in actual implementation. Since the real-time swing is monitored, when the real-time swing exceeds the safe swing, a safety accident may be about to occur or has already occurred, leaving insufficient time for the safety management department or personnel to react, resulting in relatively delayed safety response measures and corresponding safety hazards. Summary of the invention

[0005] The purpose of the present invention is to predict the predicted swing amplitude value of the hanging tank, and then perform a safety prediction assessment based on the predicted swing amplitude value. Compared with the traditional real-time swing amplitude, the predicted swing amplitude of the hanging tank can be predicted in advance, and then corresponding safety protection can be performed in advance, which is safer.

[0006] To achieve the above-mentioned purpose, the present invention provides a safety assessment system for a hydropower station dam construction project, the system comprising:

[0007] Several monitoring modules, fitting units, ranging units, calculation units, trajectory acquisition units, analysis units and safety assessment units;

[0008] Several monitoring modules are evenly distributed in the upstream and downstream sections of the river valley corresponding to the location where the hydropower station dam is constructed. Each monitoring module is used to obtain the wind speed value, wind direction and river valley width value of the corresponding monitoring point;

[0009] A data transmission unit, used to transmit the data collected by the monitoring module to the fitting unit;

[0010] A fitting unit, the fitting unit is used to obtain fitting data based on the wind speed value and the river valley width value of each monitoring point, and obtain a fitting value between the wind speed and the river valley width based on the fitting data processing;

[0011] The distance measuring unit is used to measure a first width value of a river valley corresponding to the location of the hydropower station dam;

[0012] A calculation unit, for predicting a first predicted wind speed value blowing toward the location of the hydropower station dam based on the wind direction based on the fitting value and the first width value; and for predicting a predicted swing amplitude value of the hanging pot in the cable crane under wind force based on the first predicted wind speed value;

[0013] A trajectory acquisition unit, used to obtain the running trajectory data of the hanging tank from the operating system of the cable crane;

[0014] An analysis unit is used to collect image data within a preset range of the area passed by the running trajectory, analyze the shortest straight-line distance between the edge of each target in the image data and the running trajectory, obtain a shortest straight-line distance set, and take the minimum value from the elements of the shortest straight-line distance set to obtain a safety distance value;

[0015] The safety assessment unit is used to compare the predicted swing amplitude value with the safety distance value to obtain a comparison result, and obtain a safety assessment result based on the comparison result.

[0016] Among them, the traditional solution is to obtain the real-time wind speed by installing a wind speed measuring device on the cable car, and then obtain the real-time swing amplitude by calculating the real-time wind speed. The difference is that the present invention aims to obtain the predicted wind speed, and obtain the predicted swing amplitude by predicting the wind speed, and then buy corresponding time for safety measures by predicting the predicted swing amplitude in advance, which is safer.

[0017] Among them, the focus of the present invention is to predict wind speed. The applicant's research found that the hydropower station dam is built in the river valley, and the wind speed in the river valley is related to the width of the river valley. For example, in a narrow valley, the airflow speed increases due to the small area through which the airflow passes, and in a wide valley, the airflow speed slows down due to the large area. Therefore, multiple monitoring modules are designed in the present invention, and each monitoring module is used to obtain the wind speed value, wind direction and valley width value of the corresponding monitoring point; the purpose of obtaining the wind direction is to perform corresponding calculations only when the wind blows towards the area where the dam is located, avoiding unnecessary calculations that will not affect the safety of the dam when the wind blows in other directions.

[0018] In order to accurately describe the relationship between the valley width and the wind speed, the present invention designs a fitting unit, which is used to obtain fitting data based on the wind speed value and the valley width value of each monitoring point, and obtains the fitting value between the wind speed and the valley width based on the fitting data processing; the distance measuring unit is used to measure the first width value of the valley corresponding to the location of the hydropower station dam; the calculation unit is used to predict the first predicted wind speed value blowing towards the location of the hydropower station dam based on the fitting value and the first width value; and the predicted swing amplitude value of the hanging tank in the cable car under wind force is predicted based on the first predicted wind speed value. In the above manner, the predicted swing amplitude value can be obtained accurately and in advance, and then the corresponding safety measures can be arranged in advance according to the predicted swing amplitude value.

[0019] Unlike the prior art, a maximum swing amplitude limit is designed in the prior art, and safety is judged by comparing the real-time swing amplitude with the maximum swing amplitude limit. For example, if it exceeds the limit, it is unsafe, and if it is less than the limit, it is safe. However, the applicant's research found that during the pouring of the dam, the equipment and facilities on the project site change in real time with the progress of the project. For example, the construction of the steel structure, the placement of equipment, the location of the machine room, the distribution room and the cables are all changing with the progress of the project. The traditional method of setting an unchanging maximum swing amplitude limit for safety assessment is not reasonable. For example, according to the traditional technical solution, it is judged that the real-time swing amplitude is less than the maximum swing amplitude limit as a safe state, and the cable car continues to operate. At this time, if there are obstacles around the operating route and the straight-line distance between the hanging tank is less than the real-time swing amplitude, a collision safety accident will occur. There are many obstacles with uncertain positions on the project site, as described above The steel bars, scaffolding, machine room, power distribution and power supply equipment, etc. are found. Therefore, in order to avoid the above situation, the present invention has made corresponding improvements: the system obtains the operation trajectory data of the hanging tank from the operating system of the cable car by using the trajectory acquisition unit, and conveniently obtains the operation trajectory of the hanging tank through the trajectory data. The analysis unit is used to collect image data within a preset range of the area passed by the operation trajectory. The image data can be used to obtain obstacle targets that may appear in the path related to the operation trajectory of the hanging tank. The shortest straight-line distance between the edge of each target in the image data and the operation trajectory is analyzed. Whether it is safe is judged by analyzing the distance between the target and the trajectory in the image, which has higher safety. The shortest straight-line distance set is obtained, and the minimum value is taken from the elements of the shortest straight-line distance set to obtain the safe distance value. The safety assessment unit is used to compare the predicted swing amplitude value and the safe distance value to obtain a comparison result, and a safety assessment result is obtained based on the comparison result.

[0020] Preferably, the monitoring module includes:

[0021] Anemometer, wind direction meter, distance meter, mounting base, extension support mechanism, mounting platform and power supply equipment;

[0022] The installation base is fixed on the mountain of the valley, and the monitoring module can be easily installed and fixed using the installation base; the rangefinder is installed on the installation base, and the rangefinder is used to measure the distance between the mountains on both sides of the valley to obtain the valley width value; one end of the extended support mechanism is connected to the installation base, and the other end of the extended support mechanism is extended toward the center of the valley and then connected to the installation platform, the wind speed meter and the wind direction meter are installed on the installation platform, and the power supply equipment is used to supply power to the electrical equipment in the monitoring module.

[0023] Preferably, the fitting data includes: N data pairs, each data pair includes a wind speed value and a river valley width value; the ratio of the wind speed value to the river valley width value in each data pair is calculated to obtain N ratios, and the N ratios are averaged to obtain the fitting value. The calculation method of the first predicted wind speed value is: V 预测 = first width value * fitting value, where V 预测 is the first predicted wind speed value, and * is the multiplication sign.

[0024] Preferably, the analysis unit comprises:

[0025] A first image acquisition module, used for acquiring image data in a horizontal direction;

[0026] A second image acquisition module, used for acquiring image data in a vertical direction;

[0027] The analysis module is used to identify the target in the image data, extract the contour information of the target based on the identification result, obtain the shortest straight-line distance between the edge of the target and the running trajectory based on the contour information, obtain the shortest straight-line distance set based on the shortest straight-line distance corresponding to each target, and take the minimum value from the elements of the shortest straight-line distance set to obtain a safe distance value.

[0028] Among them, the cable crane has two operating directions during its operation. One is horizontal operation, such as moving horizontally from the base position of the cable crane to the top of the dam, and transporting the hanging pot back to the base; the other is vertical operation, such as lowering the hanging pot from the top of the dam to the pouring position, and retracting the hanging pot. Therefore, in order to identify the targets corresponding to obstacles in different directions on the operating trajectory, two image acquisition modules are designed, namely the first image acquisition module and the second image acquisition module, which are used to collect image data in the horizontal and vertical directions respectively.

[0029] Preferably, the analysis unit is further used to record the location information of each target and send the location information of the target to the security assessment unit;

[0030] If the predicted swing amplitude value is less than the safety distance value, the safety assessment result is safe and the cable car continues to operate; if the predicted swing amplitude value is greater than or equal to the safety distance value, the safety assessment result is dangerous, and the target corresponding to the safety distance value is set as a dangerous target, and dangerous position information is obtained based on the position information of the dangerous target, and a control instruction to move away from the dangerous target is generated based on the dangerous position information and sent to the operating system of the cable car. The operating system of the cable car controls the hanging pot to move away from the dangerous target based on the control instruction and retract the hanging pot to the cable car base, or, the operating system of the cable car controls the hanging pot to move away from the dangerous target based on the control instruction and lower the hanging pot to a safe area.

[0031] In the prior art, the cable crane is stopped or retracted immediately without considering the location of obstacles and the running direction and state of the cable crane. A collision may occur during the retraction of the cable crane, posing a safety hazard. The difference is that when the safety assessment result is dangerous, the system can obtain dangerous position information, and based on the dangerous position information, generate control instructions to stay away from dangerous targets and send them to the operating system of the cable crane. That is, if the target is in the forward direction, the control command will retreat, and if the target is in the backward direction, the control command will move forward, thereby avoiding collision with the target and improving safety.

[0032] Preferably, the first image acquisition module and the second image acquisition module are both installed on the load-carrying trolley of the cable crane.

[0033] Preferably, if the predicted swing amplitude value is less than the safety distance value, the safety assessment result is safe and the cable car continues to operate; if the predicted swing amplitude value is greater than or equal to the safety distance value, the safety assessment result is dangerous, and the safety assessment unit obtains the real-time position of the hanging pot from the cable car's operating system, and based on the real-time position, calculates the time T1 required to retract the hanging pot to the cable car base and the time T2 required to lower the hanging pot to the safe area, and compares T1 and T2. If T1 is greater than T2, the hanging pot is lowered to the safe area; if T1 is less than or equal to T2, the hanging pot is retracted to the cable car base.

[0034] In the prior art, the cable crane is shut down or retracted. When the cable crane is near the pouring position, it needs to lift the hanging pot, retract the cable, and then move the load-carrying trolley to the base, which takes a long time and increases the exposure time in windy weather, posing a safety hazard. The difference is that the present invention compares the time T1 required to retract the hanging pot to the cable crane base and the time T2 required to lower the hanging pot to a safe area, and selects a shorter time to perform the corresponding operation, thereby reducing the exposure time of the hanging pot in windy weather and improving safety.

[0035] Preferably, the system further comprises: an alarm unit, which is used to give an alarm when the first predicted wind speed value is greater than a threshold value. In windy weather, safety accidents are prone to occur, and the alarm unit can be used to give an alarm and a corresponding safety warning.

[0036] Preferably, the system further includes: a statistical unit and a prediction unit; the statistical unit is used to count the wind speed value and the corresponding time data of each monitoring module to obtain statistical data, obtain training data based on the statistical data, and train the prediction model based on the training data to obtain a wind speed prediction model; the prediction unit is used to predict the wind speed value at a preset time based on the wind speed prediction model. The system uses the statistical unit and the prediction unit to predict the wind speed value of the future time period by machine learning, and can perform wind speed prediction longer in advance, so that the safety processing time is more sufficient.

[0037] Preferably, the applicant has found that the wind speed in the valley is related to the size of the cross-sectional area in the valley. In addition to being related to the width of the valley, it is also related to the water level. For example, the water level during the flood season and the drought period can differ by several meters or even more than ten meters, which has a corresponding impact on the wind speed in the valley. Therefore, in order to further accurately judge, the monitoring module in the system is also used to monitor the river surface water level to obtain water level data, and adjust the threshold based on the water level data, such as reducing the threshold when the water level is high and increasing the threshold when the water level is low.

[0038] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0039] (1) This system can predict the swing amplitude of the hanging tank, and then perform safety prediction assessment based on the predicted swing amplitude. Compared with the traditional real-time swing amplitude, it can predict the swing amplitude of the hanging tank in advance, and then perform corresponding safety protection in advance, which is safer.

[0040] (2) The system can obtain dangerous position information, generate control instructions to stay away from dangerous targets based on the dangerous position information, and send them to the cable crane's operating system to avoid collision with the target and improve safety.

[0041] (3) The present invention compares the time T1 required to retract the hanging pot to the cable crane base and the time T2 required to lower the hanging pot to a safe area, and selects a shorter time to perform the corresponding operation, thereby reducing the exposure time of the hanging pot in windy weather and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation on the embodiments of the present invention;

[0043] Figure 1 It is a schematic diagram of the composition of a safety assessment system for a hydropower station dam construction project in the present invention. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those within the scope of this description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0046] Embodiment 1;

[0047] Please refer to Figure 1 , Figure 1 The present invention provides a safety assessment system for a hydropower station dam construction project, and the system includes:

[0048] Several monitoring modules, fitting units, ranging units, calculation units, trajectory acquisition units, analysis units and safety assessment units;

[0049] Several monitoring modules are evenly distributed in the upstream and downstream sections of the river valley corresponding to the location where the hydropower station dam is constructed, and each monitoring module is used to obtain the wind speed value, wind direction and river valley width value of the corresponding monitoring point; wherein the number of monitoring modules can be adjusted according to the length of the river valley and actual needs, and the embodiment of the present invention does not make corresponding limitations;

[0050] A data transmission unit, used to transmit the data collected by the monitoring module to the fitting unit; the data transmission unit can adopt a wired transmission mode or a wireless transmission mode, which is not limited accordingly in the embodiment of the present invention;

[0051] A fitting unit, the fitting unit is used to obtain fitting data based on the wind speed value and the river valley width value of each monitoring point, and obtain a fitting value between the wind speed and the river valley width based on the fitting data processing;

[0052] The distance measuring unit is used to measure a first width value of a river valley corresponding to the location of the hydropower station dam; the distance measuring unit may be a distance meter or a distance meter, which is not limited accordingly in the embodiment of the present invention;

[0053] A calculation unit, for predicting a first predicted wind speed value blowing toward the location of the hydropower station dam based on the wind direction based on the fitting value and the first width value; and for predicting a predicted swing amplitude value of the hanging pot in the cable crane under wind force based on the first predicted wind speed value;

[0054] The trajectory acquisition unit is used to obtain the running trajectory data of the hanging tank from the operating system of the cable crane. In practical applications, the trajectory acquisition unit is first connected with the operating system of the cable crane to realize data transmission and obtain the running trajectory data of the hanging tank in real time.

[0055] An analysis unit is used to collect image data within a preset range of the area passed by the running track, analyze the shortest straight-line distance between the edge of each target in the image data and the running track, obtain a shortest straight-line distance set, and take the minimum value from the elements of the shortest straight-line distance set to obtain a safe distance value; wherein the analysis unit can adopt existing image analysis means including target recognition and target contour extraction, which are commonly used means in image processing means, and the present invention will not repeat them accordingly;

[0056] The safety assessment unit is used to compare the predicted swing amplitude value with the safety distance value to obtain a comparison result, and obtain a safety assessment result based on the comparison result.

[0057] Among them, in the embodiment of the present invention, the monitoring module includes:

[0058] Anemometer, wind direction meter, distance meter, mounting base, extension support mechanism, mounting platform and power supply equipment;

[0059] The mounting base is fixed on the mountain of the valley; the rangefinder is mounted on the mounting base, and the rangefinder is used to measure the distance between the mountains on both sides of the valley to obtain the width of the valley; one end of the extension support mechanism is connected to the mounting base, and the other end of the extension support mechanism is extended toward the center of the valley and then connected to the mounting platform, a wind speed meter and a wind direction meter are mounted on the mounting platform, and the power supply equipment is used to supply power to the electrical equipment in the monitoring module.

[0060] The installation fixing base can be pre-buried in the mountain, or fixed on the mountain by corresponding fixing ropes or fixing nails.

[0061] The extension support mechanism may be a long pole or an electric telescopic pole or a wooden board, and the power supply device may be a battery or a solar power supply device.

[0062] Wherein, in the embodiment of the present invention, the fitting data includes: N data pairs, each data pair includes a wind speed value and a river valley width value; the ratio of the wind speed value to the river valley width value in each data pair is calculated to obtain N ratios, and the N ratios are averaged to obtain the fitting value. The calculation method of the first predicted wind speed value is: V 预测 = first width value * fitting value, where V 预测 is the first predicted wind speed value, and * is the multiplication sign.

[0063] In this embodiment of the present invention, the analysis unit includes:

[0064] A first image acquisition module, used for acquiring image data in a horizontal direction;

[0065] A second image acquisition module, used for acquiring image data in a vertical direction; wherein the first image acquisition module and the second image acquisition module may be a camera or a video camera, and the embodiment of the present invention does not specifically limit this;

[0066] The analysis module is used to identify the targets in the image data, such as steel bars, scaffolding, cables, machine rooms, equipment, etc., and extract the contour information of the target based on the identification result, such as the outer frame contour of the distribution room, and obtain the shortest straight-line distance between the edge of the target and the running trajectory based on the contour information. For example, the shortest distance between the edge of the outer frame and the running trajectory is 5m. Based on the shortest straight-line distance corresponding to each target, a shortest straight-line distance set is obtained, such as the shortest straight-line distance set is (5m, 6.5m, 7m, 7.3m, 6.2m, 10m), and the minimum value is taken from the elements of the shortest straight-line distance set to obtain a safety distance value of 5m.

[0067] Wherein, in the embodiment of the present invention, the analysis unit is further used to record the location information of each target and send the location information of the target to the security assessment unit;

[0068] If the predicted swing amplitude value is less than the safety distance value, the safety assessment result is safe, and the cable car continues to operate; if the predicted swing amplitude value is greater than or equal to the safety distance value, the safety assessment result is dangerous, and the target corresponding to the safety distance value is set as a dangerous target, and the dangerous position information is obtained based on the position information of the dangerous target, and a control instruction to move away from the dangerous target is generated based on the dangerous position information and sent to the operating system of the cable car. The operating system of the cable car controls the hanging pot to move away from the dangerous target and retract the hanging pot to the cable car base based on the control instruction, or the operating system of the cable car controls the hanging pot to move away from the dangerous target and lower the hanging pot to a safe area based on the control instruction. For example, when the cable car is hoisting the hanging pot to the dam, if a dangerous target is found in the process of moving forward or below, the hanging pot is hoisted back to the cable car base. For example, when the cable car is hoisting the hanging pot back to the cable car base, if a dangerous target is found in the process of moving forward or above, the hanging pot is lowered to a safe area, such as the ground.

[0069] The swing amplitude may be calculated by referring to CN111606215A, or other existing calculation methods may be used, and the embodiment of the present invention does not specifically limit this.

[0070] Among them, in the embodiment of the present invention, the first image acquisition module and the second image acquisition module are both installed on the load-carrying trolley of the cable car. They can be fixedly installed or flexibly installed. For example, the first image acquisition module and the second image acquisition module can be cameras, which are installed on corresponding shooting platforms, and then the shooting platforms or brackets are fixed on the load-carrying trolley, and the shooting angles can be adjusted conveniently by using the shooting platforms or brackets.

[0071] Among them, in an embodiment of the present invention, if the predicted swing amplitude value is less than the safety distance value, the safety assessment result is safe and the cable car continues to operate; if the predicted swing amplitude value is greater than or equal to the safety distance value, the safety assessment result is dangerous, and the safety assessment unit obtains the real-time position of the hanging pot from the operating system of the cable car, such as the coordinates of the hanging pot in the preset operating trajectory, and calculates the time T1 required to retract the hanging pot to the cable car base and the time T2 required to lower the hanging pot to the safe area based on the real-time position. The calculation method can obtain the distance information according to the trajectory, obtain the remaining distance information based on the distance information and the current coordinate information, and then calculate the required time based on the moving speed and the remaining distance information, and compare the size between T1 and T2. If T1 is greater than T2, the hanging pot is lowered to the safe area. If T1 is less than or equal to T2, the hanging pot is retracted to the cable car base. By selecting an operation with a shorter time, the exposure time in strong winds can be reduced, thereby reducing safety hazards.

[0072] In the embodiment of the present invention, the system further comprises: an alarm unit, which is used to give an alarm when the first predicted wind speed value is greater than a threshold value. The alarm method can be to send an alarm message to a preset terminal through a communication module, or to give an alarm through an audible and visual alarm.

[0073] Among them, in the embodiment of the present invention, the system further includes: a statistical unit and a prediction unit; the statistical unit is used to count the wind speed value and the corresponding time data of each monitoring module, obtain statistical data, obtain training data based on the statistical data, and train the prediction model based on the training data to obtain a wind speed prediction model; the prediction unit is used to predict the wind speed value at a preset time based on the wind speed prediction model. The prediction model can adopt a prediction model commonly used in machine learning, and the embodiment of the present invention does not make specific limitations, and the model parameters and types can be selected and adjusted according to actual needs.

[0074] Among them, in the embodiment of the present invention, the monitoring module is also used to monitor the river water level to obtain water level data, and adjust the threshold value based on the water level data. The water level data can be obtained by a water level sensor or a water level meter. The adjustment method and adjustment range of the threshold value can be selected and adjusted according to actual needs, and the embodiment of the present invention does not specifically limit it.

[0075] Among them, in the embodiment of the present invention, the system further includes: a windproof and diversion unit, and the windproof and diversion unit is used to perform windproof and diversion protection on the hanging tank when the safety assessment result is dangerous.

[0076] The windproof and diversion protection for the hanging tank is specifically: start the spare cable crane, the spare cable crane lifts the windproof and diversion unit to both sides of the hanging tank, and controls the windproof and diversion unit to run synchronously with the hanging tank until the hanging tank returns to the cable crane base or is lowered to a safe area.

[0077] Among them, the windproof and diversion protection of the hanging tank includes:

[0078] Check whether the cable crane is hoisting a tank. If not, shut down the cable crane to avoid operation in windy weather and wait until the strong wind ends before operating again. If a standby cable crane is turned on, the standby cable crane will hoist the windproof and diversion units to both sides of the tank, and control the windproof and diversion units to run synchronously with the tank until the tank returns to the cable crane hoisting base. Use the standby cable crane to hoist the windproof and diversion units to both sides of the tank, block and divert the airflow blowing to the tank on both sides, reduce the speed of the airflow and change the direction of the airflow, thereby reducing the swing amplitude of the tank and enhancing its safety. The windproof and diversion units run synchronously with the tank to protect the tank from wind on the one hand, and on the other hand, ensure that the tank can operate normally and complete the hoisting task until the tank returns to the cable crane hoisting unit base, and then retract the tank, and start the hoisting task again after the strong wind ends.

[0079] Among them, corresponding wind-proof and diversion units are provided on both sides of the hanging tank, which can block and protect the airflow blowing towards the hanging tank from both sides of the valley.

[0080] Among them, the windproof and deflection unit can be composed of existing windproof and deflection plates by splicing or other connection methods. The specific splicing method and number are adjusted according to the size of the hanging tank. The embodiment of the present invention does not make specific limitations. Windproof and deflection are prior art and the present invention does not make specific introductions. In actual applications, corresponding windproof and deflection parts can be directly used.

[0081] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0082] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hydropower station dam construction project safety assessment system, characterized in that: The system comprises: Several monitoring modules, fitting units, ranging units, calculation units, trajectory acquisition units, analysis units and safety assessment units; Several monitoring modules are evenly distributed in the upstream and downstream sections of the river valley corresponding to the location where the hydropower station dam is constructed. Each monitoring module is used to obtain the wind speed value, wind direction and river valley width value of the corresponding monitoring point; A data transmission unit, used to transmit the data collected by the monitoring module to the fitting unit; A fitting unit, the fitting unit is used to obtain fitting data based on the wind speed value and the river valley width value of each monitoring point, and obtain a fitting value between the wind speed and the river valley width based on the fitting data processing; The distance measuring unit is used to measure a first width value of a river valley corresponding to the location of the hydropower station dam; A calculation unit, for predicting a first predicted wind speed value blowing toward the location of the hydropower station dam based on the wind direction based on the fitting value and the first width value; and for predicting a predicted swing amplitude value of the hanging pot in the cable crane under wind force based on the first predicted wind speed value; A trajectory acquisition unit, used to obtain the running trajectory data of the hanging tank from the operating system of the cable crane; An analysis unit is used to collect image data within a preset range of the area passed by the running trajectory, analyze the shortest straight-line distance between the edge of each target in the image data and the running trajectory, obtain a shortest straight-line distance distance set, and take the minimum value from the elements of the shortest straight-line distance distance set to obtain a safety distance value; The safety assessment unit is used to compare the predicted swing amplitude value with the safety distance value to obtain a comparison result, and obtain a safety assessment result based on the comparison result.

2. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: The monitoring module comprises: Anemometer, wind direction meter, distance meter, mounting base, extension support mechanism, mounting platform and power supply equipment; The mounting base is fixed on the mountain of the valley; the rangefinder is mounted on the mounting base, and the rangefinder is used to measure the distance between the mountains on both sides of the valley to obtain the width of the valley; one end of the extension support mechanism is connected to the mounting base, and the other end of the extension support mechanism is extended toward the center of the valley and then connected to the mounting platform, a wind speed meter and a wind direction meter are mounted on the mounting platform, and the power supply equipment is used to supply power to the electrical equipment in the monitoring module.

3. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: The fitting data includes: N data pairs, each data pair includes a wind speed value and a river valley width value; the ratio of the wind speed value to the river valley width value in each data pair is calculated to obtain N ratios, and the N ratios are averaged to obtain the fitting value. The calculation method of the first predicted wind speed value is: V 预测 = first width value * fitting value, where V 预测 is the first predicted wind speed value, and * is the multiplication sign.

4. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: The analysis unit comprises: A first image acquisition module, used for acquiring image data in a horizontal direction; A second image acquisition module, used for acquiring image data in a vertical direction; The analysis module is used to identify the target in the image data, extract the contour information of the target based on the identification result, obtain the shortest straight-line distance between the edge of the target and the running trajectory based on the contour information, obtain the shortest straight-line distance set based on the shortest straight-line distance corresponding to each target, and take the minimum value from the elements of the shortest straight-line distance set to obtain a safe distance value.

5. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: The analysis unit is also used to record the location information of each target and send the location information of the target to the security assessment unit; If the predicted swing amplitude value is less than the safety distance value, the safety assessment result is safe and the cable car continues to operate; if the predicted swing amplitude value is greater than or equal to the safety distance value, the safety assessment result is dangerous, and the target corresponding to the safety distance value is set as a dangerous target, and dangerous position information is obtained based on the position information of the dangerous target, and a control instruction to move away from the dangerous target is generated based on the dangerous position information and sent to the operating system of the cable car. The operating system of the cable car controls the hanging pot to move away from the dangerous target based on the control instruction and retract the hanging pot to the cable car base, or, the operating system of the cable car controls the hanging pot to move away from the dangerous target based on the control instruction and lower the hanging pot to a safe area.

6. A hydropower station dam construction project safety assessment system according to claim 4, characterized in that: The first image acquisition module and the second image acquisition module are both installed on the load-carrying trolley of the cable crane.

7. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: If the predicted swing amplitude value is less than the safety distance value, the safety assessment result is safe and the cable car continues to operate; if the predicted swing amplitude value is greater than or equal to the safety distance value, the safety assessment result is dangerous, and the safety assessment unit obtains the real-time position of the hanging pot from the cable car's operating system, and based on the real-time position, calculates the time T1 required to retract the hanging pot to the cable car base and the time T2 required to lower the hanging pot to the safe area, and compares T1 and T2. If T1 is greater than T2, the hanging pot is lowered to the safe area; if T1 is less than or equal to T2, the hanging pot is retracted to the cable car base.

8. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: The system further comprises: an alarm unit, which is used to issue an alarm when the first predicted wind speed value is greater than a threshold value.

9. A hydropower station dam construction project safety assessment system according to claim 1, characterized in that: The system also includes: a statistical unit and a prediction unit; the statistical unit is used to count the wind speed value and corresponding time data of each monitoring module to obtain statistical data, obtain training data based on the statistical data, and train a prediction model based on the training data to obtain a wind speed prediction model; the prediction unit is used to predict the wind speed value at a preset time based on the wind speed prediction model.

10. A hydropower station dam construction project safety assessment system according to claim 8, characterized in that: The monitoring module is also used to monitor the river water level to obtain water level data, and adjust the threshold based on the water level data.

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