Integrated monitoring system for multiple physical quantities of dam surface

Abstract

The invention relates to the technical field of water conservancy monitoring, and discloses an integrated monitoring system for multiple physical quantities of a dam surface. According to the system, comprehensive understanding of the operation state of the dam body is ensured by collecting and analyzing various physical quantities such as the dam surface environment temperature, humidity, pressure, displacement, strain and vibration, key indexes such as the dam surface field average temperature, the pressure change rate and the strain change rate can be calculated in real time through Gaussian filtering preprocessing and safety data comprehensive analysis, and the safety of the dam surface is improved. In addition, an early warning mechanism of the monitoring and early warning unit can give an alarm in the first time, the potential risk is reduced to the minimum, safe operation of the dam is guaranteed, the early warning information visualization unit visually displays the monitoring result in a chart form, and the safety of the dam is improved. The ability of a manager to understand and respond to the safety condition is improved, so that the defects of the traditional technology in the aspect of comprehensive analysis of multiple physical quantities of the dam surface of the dam are effectively overcome, and the overall effect of dam safety monitoring is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy monitoring, and in particular to an integrated monitoring system for multiple physical quantities on a dam surface. Background Art

[0002] With the continuous development of water conservancy projects, especially the construction of large dams, dam safety monitoring has become increasingly important. In water conservancy projects, dams not only undertake important functions such as water storage, power generation, and flood control, but are also important facilities to protect the surrounding ecological environment and human safety. However, during the operation of the dam, it will be affected by a variety of complex factors, including ambient temperature, humidity, pressure, displacement, strain, vibration, etc. Changes in these factors may have a direct impact on the physical structure of the dam, and thus affect its safety and stability. For example, extreme climatic conditions may cause deformation and cracks in the dam, and drastic changes in water levels may also cause seepage and other problems. Therefore, establishing an integrated monitoring system of multiple physical quantities that can collect and analyze various types of dam data in real time and comprehensively has become the key to ensuring the safe operation of the dam.

[0003] Traditional monitoring systems usually only focus on the monitoring of a single physical quantity and lack comprehensive analysis of multiple physical quantities, which makes it impossible to comprehensively assess the safety status of the dam and reduces the reliability of the dam safety monitoring results. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an integrated monitoring system for multiple physical quantities on the dam surface. By collecting and analyzing multiple physical quantities such as the dam surface environmental temperature, humidity, pressure, displacement, strain and vibration, a comprehensive understanding of the dam body's operating status is ensured. Through Gaussian filter preprocessing and comprehensive analysis of safety data, the system can calculate key indicators in real time, such as the average temperature, pressure change rate and strain change rate of the dam surface, and promptly identify abnormal conditions that exceed the safety threshold. In addition, the early warning mechanism of the monitoring and early warning unit can issue an alarm in the first time, minimize potential risks, and ensure the safe operation of the dam. The early warning information visualization unit intuitively displays the monitoring results in the form of charts, which improves managers' understanding and response capabilities to safety conditions, thereby effectively solving the deficiencies of traditional technologies in the comprehensive analysis of multiple physical quantities on the dam surface, improving the overall effect of dam safety monitoring, and solving the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions: an integrated monitoring system for multiple physical quantities of a dam surface, comprising a dam surface data acquisition unit, a dam surface data preprocessing unit, a dam surface data analysis unit, a monitoring and early warning unit, and a dam surface early warning information visualization unit;

[0008] The dam surface data acquisition unit is used to collect dam surface environmental temperature data, dam surface environmental humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data and send them to the dam surface data preprocessing unit through Ethernet;

[0009] The dam surface data preprocessing unit performs Gaussian filtering on the dam surface environment temperature data, dam surface environment humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data, and then sends the data to the dam surface data analysis unit;

[0010] The dam surface data analysis unit calculates the dam surface field average temperature, dam surface field average humidity, dam surface pressure change rate, dam surface effective pressure, dam surface lateral displacement vector, dam surface longitudinal displacement vector, dam surface strain change rate, dam body stress and dam surface vibration energy value according to the dam surface ambient temperature data, dam surface ambient humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data after Gaussian filtering, and transmits them to the monitoring and early warning unit for monitoring and analysis;

[0011] The monitoring and early warning unit has a built-in dam surface safety data comprehensive analyzer, which is used to perform safety analysis on the dam surface average temperature, dam surface average humidity, dam surface pressure change rate, dam surface effective pressure, dam surface lateral displacement vector, dam surface longitudinal displacement vector, dam surface strain change rate, dam body stress and dam surface vibration energy value calculated by the dam surface data analysis unit, and to issue an early warning for dam surface physical quantity safety thresholds that exceed those set by the dam surface safety data comprehensive analyzer, and to generate early warning information and send it to the dam surface early warning information visualization unit;

[0012] The dam surface physical quantity safety thresholds include dam surface temperature threshold, dam surface humidity threshold, dam surface pressure threshold, dam surface displacement threshold, dam surface strain threshold, dam body stress threshold and dam surface vibration energy threshold;

[0013] The dam surface warning information visualization unit displays the dam surface warning information in the form of graphs on the dam surface multi-physical quantity data monitoring screen.

[0014] Preferably, the calculation formula for the average dam surface temperature is as follows:

[0015]

[0016] In the formula, Cjwd represents the average temperature of the dam surface, Bhwd i represents the dam surface ambient temperature data monitored at the i-th moment, i represents the count subscript, and n represents the total number of temperature data. It means that the temperature data monitored at all times are added up and then divided by the total number of temperature data to obtain the average temperature of the dam surface.

[0017] Preferably, the calculation formula for the average humidity of the dam surface is as follows:

[0018]

[0019] In the formula, Bcsd represents the average humidity of the dam surface, Dsdb j represents the dam surface environmental humidity data monitored at the jth moment, j represents the time series count subscript, m represents the total number of humidity data, It means that the humidity data monitored at all times are added up and then divided by the total number of humidity data m to obtain the average humidity of the dam surface.

[0020] Preferably, the calculation formula for the dam surface pressure change rate is as follows:

[0021] ΔPd=P t+1 -P t

[0022] In the formula, ΔPd represents the rate of change of dam surface pressure, P t+1 represents the dam surface pressure data monitored at time t+1, P t Represents the dam surface pressure data monitored at time t, which is obtained through pressure sensor monitoring.

[0023] Preferably, the calculation formula for the effective pressure on the dam surface is as follows:

[0024] σ=Spta-Kxsy

[0025] In the formula, σ represents the effective pressure on the dam surface, Spta represents the overall pressure of the dam body, and the total pressure inside the dam body is measured by a pressure sensor. Kxsy represents the pore water pressure, which is measured by a pore water pressure sensor installed inside the soil.

[0026] Preferably, the calculation formula of the dam surface lateral displacement vector is as follows:

[0027] D x =D x,t -D x,0

[0028] In the formula, D x Denotes the lateral displacement vector of the dam surface, D x,0 Represents the lateral displacement data at the initial moment, D x,t It represents the lateral displacement data at time t, which is obtained by real-time monitoring of the lateral displacement of the dam body by a laser displacement meter.

[0029] Preferably, the calculation formula of the dam surface longitudinal displacement vector is as follows:

[0030] D y =D y,t -Dy,0

[0031] In the formula, D y Denotes the longitudinal displacement vector of the dam surface, D y,0 Represents the longitudinal displacement data at the initial moment, D y,t It represents the longitudinal displacement data at time t, which is obtained by real-time monitoring of the longitudinal displacement of the dam body by a laser displacement meter.

[0032] Preferably, the calculation formula of the dam surface strain change rate is as follows:

[0033] Δ∈=∈ t+1 -∈ t

[0034] In the formula, Δ∈ represents the strain change rate of the dam surface, ∈ t+1 represents the dam surface strain data monitored at time t+1, ∈ t It represents the dam surface strain data recorded at time t, which is obtained by real-time monitoring of the strain of the dam body through the resistance strain gauge.

[0035] Preferably, the calculation formula of the dam body stress is as follows:

[0036] Btyl=Bcml*∈

[0037] In the formula, Btyl represents the stress of the dam body, Bcml represents the elastic modulus of the dam body material, which is obtained by looking up in the dam body material manual, and ∈ represents the strain of the dam body, which is obtained by measuring with a strain gauge.

[0038] Preferably, the calculation formula of the dam surface vibration energy value is as follows:

[0039]

[0040] In the formula, E v represents the vibration energy value of the dam surface, mt represents the effective mass of the dam body, which is obtained through dam body monitoring experiment measurement, V represents the vibration velocity of the dam body, which is obtained through accelerometer monitoring, The proportional coefficient that represents the energy required for an object to accelerate, V 2 Represents the square of the dam body vibration velocity V.

[0041] Compared with the prior art, the present invention provides an integrated monitoring system for multiple physical quantities on the dam surface, which has the following beneficial effects:

[0042] The present invention ensures a comprehensive understanding of the operating status of the dam body by collecting and analyzing multiple physical quantities such as dam surface environmental temperature, humidity, pressure, displacement, strain and vibration. Through Gaussian filter preprocessing and comprehensive analysis of safety data, the system can calculate key indicators in real time, such as the average temperature, pressure change rate and strain change rate of the dam surface, and promptly identify abnormal situations exceeding the safety threshold. In addition, the early warning mechanism of the monitoring and early warning unit can issue an alarm in the first time, minimize potential risks, and ensure the safe operation of the dam. The early warning information visualization unit intuitively displays the monitoring results in the form of charts, which improves managers' understanding and response capabilities to safety conditions, thereby effectively solving the shortcomings of traditional technologies in the comprehensive analysis of multiple physical quantities on the dam surface and improving the overall effect of dam safety monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the system flow of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Traditional monitoring systems usually only focus on monitoring a single physical quantity and lack comprehensive analysis of multiple physical quantities, which makes it impossible to comprehensively evaluate the safety status of the dam body and reduces the reliability of the dam body safety monitoring results. Therefore, an integrated monitoring system for multiple physical quantities on the dam surface is proposed. Figure 1 ,The system includes a dam surface data acquisition unit, a dam surface data preprocessing unit, a dam surface data analysis unit, a monitoring and early warning unit, and a dam surface early warning information visualization unit;

[0046] The dam surface data acquisition unit is equipped with a multi-channel data acquisition system that can monitor multiple physical quantities in real time to ensure the comprehensiveness and timeliness of the data. The collected temperature and humidity data are detected using temperature and humidity sensors, pressure data is obtained through pressure sensors, and displacement and strain data rely on displacement sensors and strain gauges. The collection of vibration data uses high-sensitivity acceleration sensors. In addition, the data acquisition unit transmits real-time monitoring data to the dam surface data preprocessing unit quickly and securely via Ethernet, ensuring that the subsequent data processing and analysis links can receive the latest information in a timely manner, thereby providing a solid data foundation for the safety monitoring of the dam;

[0047] The dam surface data preprocessing unit uses Gaussian filtering algorithm to finely process the collected dam surface environmental temperature, humidity, pressure, displacement, strain and vibration data to reduce the impact of noise and random interference and ensure data quality. The unit first preprocesses the original sensor data, including outlier detection and data interpolation, to improve the integrity and consistency of the data. On this basis, the Gaussian filtering algorithm is used to smooth the data using weighted averaging, thereby effectively removing high-frequency noise and retaining the main features of the data. The parameter selection of Gaussian filtering is not only based on the characteristics of the data and the noise level, but can also be adjusted according to the set customized requirements to optimize the filtering effect;

[0048] The dam surface data analysis unit calculates the dam surface average temperature, dam surface average humidity, dam surface pressure change rate, dam surface effective pressure, dam surface transverse displacement vector, dam surface longitudinal displacement vector, dam surface strain change rate, dam body stress and dam surface vibration energy value according to the dam surface ambient temperature data, dam surface ambient humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data after Gaussian filtering, where:

[0049] The calculation formula of the average temperature of the dam surface is as follows:

[0050]

[0051] The average temperature of the dam surface is an important parameter for evaluating the thermal expansion and contraction of the dam body. Temperature changes will cause the expansion or contraction of the dam body material, thus affecting the overall stability of the dam body. In the formula, Cjwd represents the average temperature of the dam surface, and Bhwd represents the average temperature of the dam surface. i represents the dam surface ambient temperature data monitored at the i-th moment, i represents the count subscript, and n represents the total number of temperature data. It means that the temperature data monitored at all times are added and then divided by the total number of temperature data to obtain the average temperature of the dam surface. By monitoring the average temperature, abnormal deformation caused by temperature can be discovered in time;

[0052] The calculation formula for the average humidity of the dam surface is as follows:

[0053]

[0054] The humidity state of the dam body directly affects its permeability and anti-seepage ability. By monitoring the average humidity, we can identify the possible water intrusion and leakage risks in the dam body and effectively monitor the long-term safety of the dam body. In the formula, Bcsd represents the average humidity of the dam surface, and Dsdb represents the average humidity of the dam surface. j represents the dam surface environmental humidity data monitored at the jth moment, j represents the time series count subscript, m represents the total number of humidity data, It means that the humidity data monitored at all times are added and then divided by the total number of humidity data m to obtain the average humidity of the dam surface. The increase in humidity often accelerates the corrosion process of the dam structure. Continuous monitoring of humidity changes can provide a basis for regular inspection and maintenance, and reduce corrosion damage during long-term use;

[0055] The calculation formula of dam surface pressure change rate is as follows:

[0056] ΔPd=P t+1 -P t

[0057] The dam surface pressure change rate can reflect the dynamic performance of the dam under different working conditions, timely grasp the response of the dam under extreme conditions (such as floods, earthquakes, etc.), and provide a basis for safety assessment. In the formula, ΔPd represents the dam surface pressure change rate, P t+1 represents the dam surface pressure data monitored at time t+1, P t It represents the dam surface pressure data monitored at time t, which is obtained through pressure sensor monitoring. If the pressure change exceeds the normal range, a threshold can be set for real-time warning to ensure that necessary safety measures are taken before potential accidents occur, thereby reducing safety risks;

[0058] The calculation formula of effective pressure on dam surface is as follows:

[0059] σ=Spta-Kxsy

[0060] Effective pressure is an important indicator for understanding the stability of soil and dam bodies. Effective pressure reflects the interaction between the gravity and hydraulic force of the dam body, and can effectively evaluate the safety factor of the dam body and prevent disasters such as landslides. In the formula, σ represents the effective pressure on the dam surface, Spta represents the overall pressure of the dam body, and the total pressure inside the dam body is measured by a pressure sensor. Kxsy represents the pore water pressure, which is measured and obtained by a pore water pressure sensor installed inside the soil body. Understanding the changes in the effective pressure of the dam body under different load conditions is helpful to optimize the dam body design and ensure its stability under the expected working conditions.

[0061] The calculation formula of the lateral displacement vector of the dam surface is as follows:

[0062] D x =D x,t -D x,0

[0063] The lateral displacement vector provides the real-time deformation of the dam under the action of lateral force, which helps to evaluate the safety and stability of the dam and detect instability early. In the formula, D x Denotes the lateral displacement vector of the dam surface, D x,0 Represents the lateral displacement data at the initial moment, D x,tIt represents the lateral displacement data at time t, which is obtained by real-time monitoring of the lateral displacement of the dam body by a laser displacement meter. The data of lateral displacement monitoring can be used to formulate intuitive and reasonable maintenance and reinforcement plans, making project management more scientific and effective;

[0064] The calculation formula of the dam surface longitudinal displacement vector is as follows:

[0065] D y =D y,t -D y,0

[0066] The longitudinal displacement vector helps to monitor the settlement of the dam in real time, ensuring that compaction and foundation treatment are effectively implemented during construction and avoiding potential risks such as liquefaction. In the formula, D y Denotes the longitudinal displacement vector of the dam surface, D y,0 Represents the longitudinal displacement data at the initial moment, D y,t It represents the longitudinal displacement data at time t, which is obtained by real-time monitoring of the longitudinal displacement of the dam body by a laser displacement meter. The analysis of the longitudinal displacement can help engineers determine the overall stability and safety of the dam body and take timely countermeasures to potential structural problems;

[0067] The calculation formula of dam surface strain change rate is as follows:

[0068] Δ∈=∈ t+1 -∈ t

[0069] The strain change rate can directly reveal the stress state of the dam material and understand the deformation process of the material under actual load, thus providing data support for material reliability assessment. In the formula, Δ∈ represents the strain change rate of the dam surface, ∈ t+1 represents the dam surface strain data monitored at time t+1, ∈ t It represents the dam surface strain data recorded at time t, which is obtained by real-time monitoring of the strain of the dam body through the resistance strain gauge. Strain monitoring can identify structural problems of the dam body in advance, form a timely early warning mechanism, and reduce the probability of sudden accidents;

[0070] The calculation formula of dam body stress is as follows:

[0071] Btyl=Bcml*∈

[0072] Dam stress calculation is the key to assessing its bearing capacity. By analyzing stress data, it is possible to determine whether the dam is within a safe range and take timely maintenance measures to ensure the safety of the dam. In the formula, Btyl represents the dam stress, Bcml represents the elastic modulus of the dam material, which can be obtained by searching in the dam material manual, and ∈ represents the strain of the dam, which can be obtained by measuring with a strain gauge. Stress data can provide a reliable basis for dam reinforcement and maintenance, and provide data support for long-term safety assurance.

[0073] The calculation formula of the dam surface vibration energy value is as follows:

[0074]

[0075] The vibration energy value reflects the response of the dam body under earthquakes, waves and other dynamic loads, and helps evaluate the toughness and earthquake resistance of the dam body under extreme conditions. In the formula, E v represents the vibration energy value of the dam surface, mt represents the effective mass of the dam body, which is obtained through dam body monitoring experiment measurement, V represents the vibration velocity of the dam body, which is obtained through accelerometer monitoring, The proportional coefficient represents the energy required by an object during acceleration. V2 represents the square of the vibration velocity V of the dam body. By monitoring the vibration energy, dynamic factors that may lead to structural damage can be discovered in advance, helping engineers develop effective disaster prevention and risk management strategies.

[0076] The built-in comprehensive analyzer of dam surface safety data in the monitoring and early warning unit is equipped with advanced data processing algorithms, which can conduct comprehensive safety analysis on multiple key indicators calculated by the dam surface data analysis unit. These indicators include the average temperature of the dam surface, the average humidity, the pressure change rate, the effective pressure, the lateral and longitudinal displacement vectors, the strain change rate, the dam body stress and the vibration energy value. The average temperature of the dam surface should be maintained between 0 degrees Celsius and 50 degrees Celsius, the average humidity should be controlled between 30% and 90%, the threshold of the dam surface pressure change rate should not exceed 5 kPa per hour, the effective pressure should not be less than 20 kPa, the threshold of the lateral displacement vector and the longitudinal displacement vector should not exceed 5 mm, the allowable fluctuation range of the strain change rate is 0.005% to 0.1%, the dam body stress should be maintained within the design safety level, usually not exceeding 60% of its compressive strength, and the threshold of the vibration energy value is 1000J to avoid potential structural damage. If any physical quantity is detected to exceed the above set safety threshold, the system will immediately generate a warning message and transmit it to the dam surface warning information visualization unit through a data link to facilitate timely response by engineers and decision makers;

[0077] The dam surface warning information visualization unit dynamically displays different warning information through various chart types (such as line charts, bar charts and pie charts, etc.). The changing trends of the average temperature and humidity on the dam surface are displayed through time series line charts, which is convenient for observing their fluctuations over time. The dam surface pressure change rate and effective pressure are displayed through bar charts to reflect the amplitude and frequency of pressure changes in different time periods. Dynamic indicators such as displacement, strain and vibration energy value can be reflected through real-time dynamic graphics to reflect their precise values ​​and changing states.

[0078] In addition, the visualization unit also integrates early warning threshold identification. By adding color codes or warning marks to key data points in the chart, when the data is blown or exceeds the set safety threshold, the corresponding indicator is immediately highlighted in red to ensure that staff can quickly identify potential risks. Users can zoom, drag and other operations through the interactive interface to view detailed data and historical trends for a specific time period, thereby assisting decision-making, optimizing management processes, and improving emergency response capabilities. Such a visualization solution not only improves the readability of the data, but also enhances the practicality and efficiency of the dam safety monitoring system, providing strong support for ensuring the safe operation of the dam body.

[0079] Through the comprehensive application of the above-mentioned systems, the shortcomings of traditional technologies in the comprehensive analysis of multiple physical quantities on the dam surface have been effectively solved, and the overall effect of dam safety monitoring has been improved.

[0080] Embodiment 1:

[0081] In this experiment, the dam surface strain, dam body stress and dam surface vibration of the dam body are analyzed. The dam surface strain ∈ t =0.002, the dam surface strain at time t+1∈ t+1 =0.0025, elastic modulus of dam material Bcml = 200*10 3 kPa, the vibration velocity of the dam body V = 0.5m / s, the effective mass mt = 2000kg, according to the calculation formula of the dam surface strain change rate Δ∈ = ∈ t+1 -∈ t =0.0025-0.002=0.0005, according to the calculation formula of dam body stress Btyl=Bcml*∈=200*10 3 kPa*0.0025=500kPa, according to the calculation formula of dam surface vibration energy value From the comparison between the above threshold range and the experimental calculation results, it can be concluded that the dam surface strain change rate Δ∈=0.0005 is less than the safety threshold range of 0.005, the dam body stress Btyl=500kPa does not exceed 60% of the dam body compressive strength of 1000kPa, and the dam surface vibration energy value E v =250J does not exceed the threshold value of vibration energy value 1000J. At this time, it means that the obtained dam surface strain change rate, dam body stress and dam surface vibration energy value are all within the set safety threshold range, indicating that the dam body is in good operating condition and there is no abnormality. Monitoring and regular verification of these parameters are crucial to ensure the safety of the dam;

[0082] Embodiment 2:

[0083] In this experiment, the dam surface strain, dam body stress and dam surface vibration of the dam body are analyzed. The dam surface strain ∈ t =0.002, the dam surface strain at time t+1∈ t+1 =0.005, elastic modulus of dam material Bcml = 200*10 3 kPa, the vibration velocity of the dam body V = 2m / s, the effective mass mt = 2000kg, according to the calculation formula of the dam surface strain change rate Δ∈ = ∈ t+1 -∈ t =0.005-0.002=0.003, according to the calculation formula of dam body stress Btyl=Bcml*∈=200*10 3 kPa*0.005=1000kPa, according to the calculation formula of dam surface vibration energy value From the comparison between the above threshold range and the experimental calculation results, it can be concluded that the dam surface strain change rate Δ∈=0.003 is greater than the safety threshold range of 0.005, the dam body stress Btyl=1000kPa exceeds 60% of the dam body compressive strength of 1000kPa, and the dam surface vibration energy value E v =4000J does not exceed the threshold value of vibration energy value 1000J. Through the above calculation, it is found that when the strain change rate, dam body stress and dam surface vibration energy value exceed the set safety threshold, there may be potential risks to the dam. In this case, immediate action must be taken to conduct in-depth investigation and evaluation to ensure the safety and stability of the dam.

[0084] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated monitoring system for multiple physical quantities on a dam surface, characterized by: It includes a dam surface data acquisition unit, a dam surface data preprocessing unit, a dam surface data analysis unit, a monitoring and early warning unit, and a dam surface early warning information visualization unit; The dam surface data acquisition unit is used to collect dam surface environmental temperature data, dam surface environmental humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data and send them to the dam surface data preprocessing unit through Ethernet; The dam surface data preprocessing unit performs Gaussian filtering on the dam surface environment temperature data, dam surface environment humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data, and then sends the data to the dam surface data analysis unit; The dam surface data analysis unit calculates the dam surface field average temperature, dam surface field average humidity, dam surface pressure change rate, dam surface effective pressure, dam surface lateral displacement vector, dam surface longitudinal displacement vector, dam surface strain change rate, dam body stress and dam surface vibration energy value according to the dam surface ambient temperature data, dam surface ambient humidity data, dam surface pressure data, dam surface displacement data, dam surface strain data and dam surface vibration data after Gaussian filtering, and transmits them to the monitoring and early warning unit for monitoring and analysis; The monitoring and early warning unit has a built-in dam surface safety data comprehensive analyzer, which is used to perform safety analysis on the dam surface average temperature, dam surface average humidity, dam surface pressure change rate, dam surface effective pressure, dam surface lateral displacement vector, dam surface longitudinal displacement vector, dam surface strain change rate, dam body stress and dam surface vibration energy value calculated by the dam surface data analysis unit, and to issue an early warning for dam surface physical quantity safety thresholds that exceed those set by the dam surface safety data comprehensive analyzer, and to generate early warning information and send it to the dam surface early warning information visualization unit; The dam surface physical quantity safety thresholds include dam surface temperature threshold, dam surface humidity threshold, dam surface pressure threshold, dam surface displacement threshold, dam surface strain threshold, dam body stress threshold and dam surface vibration energy threshold; The dam surface warning information visualization unit displays the dam surface warning information in the form of graphs on the dam surface multi-physical quantity data monitoring screen.

2. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 1 is characterized by: The calculation formula of the average temperature of the dam surface is as follows: In the formula, Cjwd represents the average temperature of the dam surface, Bhwd i represents the dam surface ambient temperature data monitored at the i-th moment, i represents the count subscript, and n represents the total number of temperature data. It means that the temperature data monitored at all times are added up and then divided by the total number of temperature data to obtain the average temperature of the dam surface.

3. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 2 is characterized by: The calculation formula for the average humidity of the dam surface is as follows: In the formula, Bcsd represents the average humidity of the dam surface, Dsdb j represents the dam surface environmental humidity data monitored at the jth moment, j represents the time series count subscript, m represents the total number of humidity data, It means that the humidity data monitored at all times are added up and then divided by the total number of humidity data m to obtain the average humidity of the dam surface.

4. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 3 is characterized by: The calculation formula of the dam surface pressure change rate is as follows: ΔPd=P t+1 -P t In the formula, ΔPd represents the rate of change of dam surface pressure, P t+1 represents the dam surface pressure data monitored at time t+1, P t Represents the dam surface pressure data monitored at time t, which is obtained through pressure sensor monitoring.

5. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 4 is characterized by: The calculation formula of the effective pressure on the dam surface is as follows: σ=Spta-Kxsy In the formula, σ represents the effective pressure on the dam surface, Spta represents the overall pressure of the dam body, and the total pressure inside the dam body is measured by a pressure sensor. Kxsy represents the pore water pressure, which is measured by a pore water pressure sensor installed inside the soil.

6. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 5 is characterized by: The calculation formula of the dam surface lateral displacement vector is as follows: D x =D x，t -D x，0 In the formula, D x Denotes the lateral displacement vector of the dam surface, D x，0 Represents the lateral displacement data at the initial moment, D x，t It represents the lateral displacement data at time t, which is obtained by real-time monitoring of the lateral displacement of the dam body by a laser displacement meter.

7. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 6 is characterized by: The calculation formula of the dam surface longitudinal displacement vector is as follows: D y =D y，t -D y，0 In the formula, D y Denotes the longitudinal displacement vector of the dam surface, D y，0 Represents the longitudinal displacement data at the initial moment, D y，t It represents the longitudinal displacement data at time t, which is obtained by real-time monitoring of the longitudinal displacement of the dam body by a laser displacement meter.

8. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 7 is characterized by: The calculation formula of the dam surface strain change rate is as follows: Δ∈=∈ t+1 -∈ t In the formula, Δ∈ represents the strain change rate of the dam surface, ∈ t+1 represents the dam surface strain data monitored at time t+1, ∈ t It represents the dam surface strain data recorded at time t, which is obtained by real-time monitoring of the strain of the dam body through the resistance strain gauge.

9. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 8 is characterized by: The calculation formula of the dam body stress is as follows: Btyl=Bcml*∈ In the formula, Btyl represents the stress of the dam body, Bcml represents the elastic modulus of the dam body material, which is obtained by looking up in the dam body material manual, and ∈ represents the strain of the dam body, which is obtained by measuring with a strain gauge.

10. The integrated monitoring system for multiple physical quantities of a dam surface according to claim 9, characterized in that: The calculation formula of the dam surface vibration energy value is as follows: In the formula, E v represents the vibration energy value of the dam surface, mt represents the effective mass of the dam body, which is obtained through dam body monitoring experiment measurement, V represents the vibration velocity of the dam body, which is obtained through accelerometer monitoring, The proportional coefficient that represents the energy required for an object to accelerate, V 2 Represents the square of the dam body vibration velocity V.

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