Vacuum preloading consolidation process monitoring method, device, equipment, system and medium

Abstract

The invention relates to a vacuum preloading consolidation process monitoring method, device, equipment, system and medium, in particular to the technical field of foundation monitoring, a plurality of sensors are arranged on a to-be-monitored foundation to measure the ultra-static pore pressure and the radial consolidation degree in a soil body, a data acquisition module is started, and the data acquisition module is used for acquiring data of the to-be-monitored foundation; monitoring data from the sensor are received in real time and preliminarily processed, the processed monitoring data are transmitted to a remote monitoring center, the monitoring data are analyzed through an alarm module, whether the ultra-static pore pressure or the consolidation degree is abnormal or not is judged based on a preset threshold value, and a sound-light alarm signal is sent out when the ultra-static pore pressure or the consolidation degree is abnormal. According to the invention, the plurality of sensors are arranged, so that the ultra-static pore pressure and the radial consolidation degree in a soil body of a to-be-monitored foundation can be simultaneously acquired by using the plurality of sensors during use, and real-time alarm can be carried out in the monitoring process, so that the function of feeding back a monitoring result in real time is realized, and the flexibility is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation monitoring, and particularly relates to a monitoring method, device, equipment, system and medium for the vacuum preloading consolidation process. Background Art

[0002] With the continuous improvement of the requirements for foundation treatment technology in the field of engineering construction, the vacuum preloading consolidation technology, as an efficient foundation improvement method, has gradually received wide attention. The vacuum preloading consolidation method promotes the release of pore water in the soil by applying vacuum pressure on the foundation, thereby improving the consolidation effect of the foundation.

[0003] In the prior art, when monitoring the consolidation effect of the foundation, a monitoring sensor is usually installed at a certain position to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored. Moreover, during the monitoring process, real-time alarm cannot be carried out according to the monitoring results. Summary of the Invention

[0004] The main object of the present invention is to propose a monitoring method, device, equipment, system and medium for the vacuum preloading consolidation process, aiming to solve the technical problems in the related art that when monitoring the consolidation effect of the foundation, a monitoring sensor is usually installed at a certain position to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored, and during the monitoring process, real-time alarm cannot be carried out according to the monitoring results.

[0005] To achieve the above object, a monitoring method for the vacuum preloading consolidation process proposed by the present invention includes the following steps: Deploy a plurality of sensors on the foundation to be monitored to measure the excess pore water pressure and the radial consolidation degree in the soil; Start the data acquisition module to receive the monitoring data from the sensors in real time and perform preliminary processing; Transmit the processed monitoring data to the remote monitoring center; Analyze the monitoring data through the alarm module, judge whether the excess pore water pressure or the consolidation degree is abnormal based on a preset threshold, and send out an audible and visual alarm signal when it is abnormal; wherein, the alarm module is formed in the remote monitoring center.

[0006] In an embodiment, before the step of deploying a plurality of sensors on the foundation to be monitored to measure the excess pore water pressure and the radial consolidation degree in the soil, it further includes: Set sensors on the foundation to be monitored according to preset parameters to synchronously measure different positions on the foundation to be monitored; wherein, the preset parameters include a preset spacing and a preset depth Collect initial measurement data as a reference to correct subsequent measurements; Measure the excess pore pressure and radial degree of consolidation in the soil mass by using the arranged sensors.

[0007] In one embodiment, the step of the start data acquisition module receiving the monitoring data from the sensors in real time and performing preliminary processing includes: The start data acquisition module receives the monitoring data from the sensors in real time; Perform real-time calibration on the received monitoring data and reduce data deviation to complete preliminary processing.

[0008] In one embodiment, the step of transmitting the processed monitoring data to the remote monitoring center includes: Transmit the processed monitoring data to the remote monitoring center by wireless transmission and perform two-way communication with the remote monitoring center.

[0009] In one embodiment, after the step of analyzing the monitoring data by the alarm module, judging whether the excess pore pressure or the degree of consolidation is abnormal based on a preset threshold, and sending an audible and visual alarm signal when it is abnormal, it further includes: When an alarm occurs, record the alarm data; wherein, the alarm data includes the trigger time, the sensor position, and the measurement parameters.

[0010] In one embodiment, after the step of recording the alarm data when an alarm occurs, it further includes: Obtain the environmental parameters of the area where the foundation to be monitored is located; According to the environmental parameters, adjust the alarm threshold in real time.

[0011] Based on the same technical concept, in a second aspect, the present invention also proposes a monitoring device for the vacuum preloading consolidation process, including: A measurement module for deploying a plurality of sensors on the foundation to be monitored to measure the excess pore pressure and radial degree of consolidation in the soil mass; A data acquisition module for receiving the monitoring data from the sensors in real time and performing preliminary processing; A data transmission module for transmitting the processed monitoring data to the remote monitoring center; An early warning module for analyzing the monitoring data by the alarm module, judging whether the excess pore pressure or the degree of consolidation is abnormal based on a preset threshold, and sending an audible and visual alarm signal when it is abnormal; wherein, the alarm module is formed in the remote monitoring center.

[0012] Based on the same inventive concept, in a third aspect, the present invention further provides a monitoring device for the vacuum preloading consolidation process. The monitoring device for the vacuum preloading consolidation process includes a processor and a memory. A vacuum preloading consolidation process monitoring program is stored on the memory. When the vacuum preloading consolidation process monitoring program is executed by the processor, the vacuum preloading consolidation process monitoring method described in the first aspect is implemented.

[0013] Based on the same inventive concept, in a fourth aspect, the present invention further provides a monitoring system for the vacuum preloading consolidation process, including: The monitoring device for the vacuum preloading consolidation process described in the third aspect; and, A plurality of sensors, all of which are communicatively connected to the monitoring device for the vacuum preloading consolidation process and measure the excess pore water pressure and the radial consolidation degree in the soil mass of the foundation to be monitored.

[0014] Based on the same inventive concept, in a fifth aspect, the present invention further provides a computer-readable storage medium. A computer program is stored on the storage medium. When the computer program is executed by one or more processors, the vacuum preloading consolidation process monitoring method described in the first aspect is implemented.

[0015] The technical solution of the present invention deploys a plurality of sensors on the foundation to be monitored to measure the excess pore water pressure and the radial consolidation degree in the soil mass, starts the data acquisition module, receives the monitoring data from the sensors in real time and performs preliminary processing, transmits the processed monitoring data to the remote monitoring center, analyzes the monitoring data through the alarm module, judges whether the excess pore water pressure or the consolidation degree is abnormal based on a preset threshold, and emits an audible and visual alarm signal when it is abnormal, so that the present invention can use the set plurality of sensors to simultaneously collect the excess pore water pressure and the radial consolidation degree in the soil mass of the foundation to be monitored during use, and can perform real-time alarm during the monitoring process, realizing the function of real-time feedback of the monitoring results and improving the flexibility. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0017] Figure 1 It is a flowchart of the monitoring method for the vacuum preloading consolidation process provided by the present invention; Figure 2 It is a flowchart of step S200 in the example of the present invention; Figure 3Flowcharts of some specific embodiments of the examples of the present invention; Figure 4 Flowcharts of some specific embodiments of the examples of the present invention; Figure 5 Flowcharts of some other embodiments of the examples of the present invention; Figure 6 Calculation model diagrams of some verification embodiments of the examples of the present invention; Figure 7 Schematic diagrams of the vacuum degree attenuation during the vacuum preloading process of the examples of the present invention; Figure 8 Influence results of the value of α on the average radial degree of consolidation under different initial PVD permeability coefficients; Figure 9 Influence results of the value of α on the variation law of the degree of consolidation along the depth under different initial PVD permeability coefficients; Figure 10 Influence results of the value of α on the variation law of the excess pore water pressure along the depth under different initial PVD permeability coefficients; Figure 11 Influence results of the value of α on the average radial degree of consolidation under different PVD radii; Figure 12 Influence results of the value of α on the variation law of the degree of consolidation along the depth under different PVD radii; Figure 13 Influence results of the value of α on the variation law of the excess pore water pressure along the depth under different PVD radii; Figure 14 Influence results of the value of α on the average radial degree of consolidation under different smear radii; Figure 15 Influence results of the value of α on the variation law of the degree of consolidation along the depth under different smear radii; Figure 16 Influence results of the value of α on the variation law of the excess pore water pressure along the depth under different smear radii; Figure 17 Influence results of the value of α on the average radial degree of consolidation under different degrees of disturbance in the smear zone; Figure 18 Influence results of the value of α on the variation law of the excess pore water pressure along the depth under different vacuum degree attenuation coefficients; Figure 19 Influence results of the value of α on the variation law of the excess pore water pressure along the depth under different degrees of disturbance in the smear zone; Figure 20 Influence results of the value of α on the variation law of the excess pore water pressure along the depth under different vacuum degree attenuation coefficients; Figure 21 Schematic diagram of the structure of the monitoring equipment for the vacuum preloading consolidation process of the examples of the present invention.

[0018] The realization, functional features and advantages of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] The present invention proposes a method for monitoring the vacuum preloading consolidation process.

[0023] Please refer to Figures 1 to 21 , in an embodiment of the present invention, the method for monitoring the vacuum preloading consolidation process includes the following steps: S100. Deploy a plurality of sensors on the foundation to be monitored to measure the excess pore water pressure and radial consolidation degree in the soil mass.

[0024] Specifically, the description process of this embodiment is carried out from the perspective of a vacuum preloading consolidation process monitoring system (hereinafter abbreviated as the system). Specifically, multiple sensors are arranged at different positions of the foundation to be monitored to form a complete monitoring network. Exemplary sensors can detect and record the excess pore pressure and radial consolidation degree in the soil mass to provide detailed monitoring data. The types of sensors can include strain gauges, pore pressure gauges, etc., which are selected and arranged according to the specific conditions of the foundation.

[0025] S200. Start the data acquisition module to receive the monitoring data from the sensors in real time and perform preliminary processing.

[0026] Specifically, the data acquisition module is communicatively connected to the sensors and can receive the monitoring data in real time. Through preliminary processing, the data acquisition module converts the monitoring data into a readable format, including removing noise and calibrating errors to ensure the accuracy of the data.

[0027] S300. Transmit the processed monitoring data to the remote monitoring center.

[0028] Specifically, the processed monitoring data is transmitted to the remote monitoring center through a secure communication protocol for further analysis. The transmission of data needs to consider factors such as signal strength and transmission environment to ensure the real-time and integrity of the data.

[0029] S400. Analyze the monitoring data through the alarm module, judge whether the excess pore pressure or consolidation degree is abnormal based on a preset threshold, and send out an audible and visual alarm signal when it is abnormal; wherein, the alarm module is formed in the remote monitoring center.

[0030] Specifically, in the remote monitoring center, the monitoring and alarm module will analyze the real-time data and judge whether the excess pore pressure or consolidation degree is abnormal according to the preset threshold. The exemplary preset threshold is set according to historical data and the properties of the foundation to ensure sensitive detection of possible abnormal situations.

[0031] In this embodiment, by deploying multiple sensors on the foundation to be monitored to measure the excess pore pressure and radial consolidation degree in the soil mass, starting the data acquisition module to receive the monitoring data from the sensors in real time and perform preliminary processing, transmitting the processed monitoring data to the remote monitoring center, analyzing the monitoring data through the alarm module, judging whether the excess pore pressure or consolidation degree is abnormal based on a preset threshold, and sending out an audible and visual alarm signal when it is abnormal, the present invention can utilize the multiple sensors provided to simultaneously collect the excess pore pressure and radial consolidation degree in the soil mass of the foundation to be monitored during use, and during the monitoring process, real-time alarm can be carried out, realizing the function of real-time feedback of the monitoring results and improving the flexibility.

[0032] In one embodiment, before step S100, the following steps are further included: S500. Set sensors on the foundation to be monitored according to preset parameters to synchronously measure different positions on the foundation to be monitored; wherein the preset parameters include a preset spacing and a preset depth.

[0033] Specifically, the preset parameters include a preset spacing and a preset depth. The arrangement of the sensors needs to consider the geological characteristics of the foundation and engineering requirements to ensure the representativeness and reliability of the monitoring data.

[0034] S600. Collect initial measurement data as a benchmark to correct subsequent measurements.

[0035] After the sensors are arranged, initial measurements are carried out to collect the original state data of the foundation. The data is used as a reference value for subsequent monitoring to evaluate the consolidation effect and analyze dynamic changes.

[0036] S700. Use the arranged sensors to measure the excess pore pressure and radial consolidation degree in the soil mass.

[0037] Based on the data after initial correction, the excess pore pressure and radial consolidation degree are monitored in real time. To ensure the accuracy of the data, an automatic sampling control device can be configured, and the preset sampling interval is once per hour.

[0038] In one embodiment, step S200 includes: S210. Start the data acquisition module to receive the monitoring data from the sensors in real time.

[0039] Specifically, the data acquisition module can receive the monitoring data in real time through communication with each sensor. The data includes the change information of the excess pore pressure and radial consolidation degree in the soil mass. The data acquisition module is usually equipped with advanced hardware and software systems to ensure that a large amount of data can be obtained more accurately.

[0040] S220. Perform real-time calibration on the received monitoring data and reduce data deviation to complete preliminary processing.

[0041] Specifically, through real-time calibration, the system can identify and correct any potential errors, including sensor drift caused by environmental changes, etc. Reducing data deviation can be achieved through algorithm optimization and data filtering, and reducing data deviation can also ensure that the processed data reflects the foundation conditions in real time.

[0042] In one embodiment, step S300 includes: Transmit the processed monitoring data to the remote monitoring center by wireless transmission and perform two-way communication with the remote monitoring center.

[0043] Specifically, to achieve remote data monitoring and management, the processed monitoring data is sent to the remote monitoring center via wireless transmission. The wireless transmission method can include various technologies such as Wi-Fi, cellular networks, or satellite communication, etc. The specific selection depends on the geographical location and communication environment of the ground base. Through two-way communication, the remote monitoring center can not only receive the monitoring data of the ground base in real time but also send instructions to the ground base monitoring equipment to adjust the monitoring parameters or conduct fault troubleshooting.

[0044] In one embodiment, after step S400, it further includes: S800. When an alarm occurs, record the alarm data; wherein, the alarm data includes the trigger time, sensor location, and measurement parameters.

[0045] Specifically, the system automatically records the relevant alarm data when detecting an abnormal alarm. Example alarm data includes the specific time when the alarm is triggered, the location of the problematic sensor, and the key measurement parameters that cause the alarm. At the same time, obtaining the alarm data can also contribute to timely risk assessment and intervention.

[0046] In one embodiment, after step S800, it further includes: S900. Obtain the environmental parameters of the area where the ground base to be monitored is located.

[0047] Specifically, the system obtains the environmental parameters of the area where the ground base is located through a sensor network or other data sources. The environmental parameters include temperature, humidity, air pressure, precipitation, etc.

[0048] S10. According to the environmental parameters, adjust the alarm threshold in real time.

[0049] Specifically, according to the obtained environmental parameters, the system can dynamically adjust the alarm threshold to adapt to changes in environmental conditions. The purpose of real-time adjustment is to improve the flexibility and pertinence of the monitoring system and avoid false alarms caused by abnormal environmental changes.

[0050] In some verification embodiments, the method exemplified by the present invention can also be implemented in the following manner: The calculation model is as Figure 6 shown. The length of the PVD (i.e., the thickness of the soft soil layer) is H , and the radius is . Since the well resistance increases with time during the vacuum preloading consolidation process, the permeability coefficient of the PVD gradually decreases with time, denoted by kw(t). Due to the disturbance during the PVD installation process, a smeared zone with a radius of r s is formed around it. The radial permeability coefficient of the soil in the smeared zone gradually decreases inward along the radial direction, denoted by k s(r) . The outer periphery of the smeared zone is the undisturbed zone, and the radial permeability coefficient isk h , the radius of the PVD affected area is r h .

[0051] Figure 7 is a schematic diagram of the vacuum degree attenuation during the vacuum preloading process. The vacuum pressure applied at the top of the soil layer is - , the vacuum degree decays both vertically and radially, and the decay coefficients are and , respectively. Then the vacuum pressure at any position can be expressed as:

[0052] The main assumptions in the analysis process are as follows: (1) The soil is completely saturated, and both soil particles and pore water are incompressible; (2) Only radial seepage is considered, and the seepage under negative pressure conditions obeys Darcy's law; (3) The equal strain condition holds, and there is no lateral deformation; (4) The change of pore pressure in the PVD along the radial direction is neglected; (5) The area below the calculation depth and the outer boundary of the PVD affected area are impermeable; (6) The amount of water seeping into the PVD from the soil is equal to the increment of upward water flow in the PVD; (7) The vacuum degree decays linearly both vertically and radially; (8) The permeability coefficient of the PVD decays exponentially with time.

[0053] According to assumption (8), the permeability coefficient at any time in the PVD can be expressed as

[0054] In the formula: is the initial permeability coefficient of the PVD; is the test constant; t is the time.

[0055] The radial seepage velocity in the soil can be expressed as:

[0056] In the formula: is the radial seepage flow in the soil; k is the permeability coefficient. When , k = k s (r) When , k = k h .

[0057] The volume change rate of the soil mass in the vertical direction can be expressed as:

[0058] Where: V is the volume change of the soil mass in the vertical direction.

[0059] From the radial flow velocity being equal to the volume change rate of the soil mass in the vertical direction and combining with the vacuum pressure equation at any position, we can obtain: When at that time,

[0060] When at that time,

[0061] Where: and are the excess pore water pressures in the smeared zone and the undisturbed outer zone respectively.

[0062] Regarding the change in the radial permeability coefficient of the smeared zone, some scholars have proposed a linear change form and an exponential change form. For the convenience of calculation, the linear change form is adopted here, then the radial permeability coefficient of the smeared zone can be expressed as:

[0063] Where: is the minimum value of the permeability coefficient in the smeared zone;

[0064] From the definition, we know that reflects the disturbance degree of the soil mass in the smeared zone.

[0065] According to the radial seepage velocity equation in the soil mass, we can obtain:

[0066] Where: is the vertical strain; is the soil mass volume compression coefficient; is the average excess pore water pressure at a certain depth in the soil mass within the PVD influence zone considering only radial seepage, and can be expressed as:

[0067] According to

[0068] we can obtain =0 The boundary conditions at the top and bottom of the PVD are respectively:

[0069]

[0070] At the outer boundary of the PVD affected zone, there is:

[0071] The boundary condition of equal excess pore pressure is satisfied on both the contact surface between the PVD and the smeared zone and the contact surface between the smeared zone and the undisturbed zone, that is,

[0072]

[0073] Solve = 0, and combine with the equations and , we can get: +

[0074] In the formula: , is the well diameter ratio; .

[0075] Integrate both sides of the equation with respect to r , and combine with the boundary condition equation and the equation + we can get:

[0076] Solve the equation using a similar method, we can get:

[0077] Substitute the equations and into the equation , we can get:

[0078] In the formula: ; when the well diameter ratio is large, ignore the high-order terms, .

[0079] Substitute the equation into the equation

[0080] for solution, and combine with the initial conditions, we can get:

[0081] In the formula: ; ; ; The average radial degree of consolidation at any depth can be expressed as:

[0082] Where: 、 and are respectively the t = 0, t, values at .

[0083] Furthermore, the overall average radial degree of consolidation within the treatment depth can be expressed as:

[0084] Where: is the overall average radial degree of consolidation within the treatment range.

[0085] In this section, first, the rationality of the solution in this paper is verified by comparing with the existing theoretical solutions; then, a series of parametric analyses are carried out to study the influence law of the change of well resistance with time on the vacuum preloading consolidation characteristics under different working conditions. During the analysis process, unless otherwise specified, the parameter values are as follows: the soil layer thickness H = 15m, the applied vacuum negative pressure is 80kPa, and the attenuation coefficients of the vacuum degree in the vertical and radial directions k 1 =k 2 = 0.7; the radius of the PVD r w = 0.03m, the radius of the smeared zone r s = 0.15m, the influence radius r h = 0.5m; the initial permeability coefficient of the PVD k w0 = 10-3m / s, the soil permeability coefficient k h = 10-8m / s, the volume compressibility m v = 0.2MPa -1 , and the minimum value of the permeability coefficient in the smeared zone k 0 = 10 -9 m / s. For the convenience of analysis, the well resistance change coefficient α is introduced to reflect the change characteristics of the well resistance with time, and the specific definition is as follows:

[0086] Where: , .

[0087] Through the above process, the present invention can draw the following conclusions: 1) Comparison with the existing solutions: If we set α = 0, then kw = kw0, and the solution in this paper can be degenerated into the analytical solution of vacuum preloading consolidation without considering the change of well resistance.

[0088] If we set k1 = k2 = 1 and neglect the variation of the permeability coefficient in the smeared zone along the radial direction, the solution in this paper can be degenerated into the analytical solution of vacuum preloading consolidation of variable well resistance foundation without considering the vacuum degree attenuation and the variation of the permeability coefficient in the smeared zone.

[0089] From the above comparison, it can be seen that the solution established in this paper is reliable and can consider the attenuation of the vacuum degree along the vertical and radial directions, the variation of the permeability coefficient in the smeared zone along the radial direction, the variation of the well resistance with time during the vacuum preloading process, etc. Therefore, the solution in this paper is more rigorous and more in line with the actual working conditions.

[0090] 2) Parameter analysis: Based on the established theoretical solution, the influence of the variation of the well resistance with time on the radial average degree of consolidation of the soil, the distribution law of the degree of consolidation and the excess pore water pressure along the depth at different times is studied through parameter analysis, and the relationship between the influence of the variation of the well resistance and the initial permeability coefficient of the PVD, the radius of the PVD, the radius of the smeared zone and the degree of disturbance in the smeared zone is discussed.

[0091] 3) Influence of the variation of the well resistance under different initial permeability coefficients of the PVD: The influence of the value of α on the average radial degree of consolidation under different initial permeability coefficients of the PVD is as Figure 8 shown. From Figure 8 it can be seen that when Th is small (Th < 0.3), the influence of the well resistance variation coefficient α on the average radial degree of consolidation of the soil is very small; when Th > 0.3, with the increase of α, the average radial degree of consolidation of the soil gradually decreases, and the degree of decrease becomes more obvious with the increase of Th and tends to be stable in the later stage of consolidation. This indicates that the previously adopted constant well resistance model will overestimate the consolidation rate of the soil. Compared with the case of kw0 = 10−3 m / s, when kw0 = 2×10−3 m / s, the average radial degree of consolidation of the soil is larger, and the degree of decrease of the average radial degree of consolidation of the soil under the same α increment is weakened when Th > 0.3, indicating that when the initial permeability coefficient of the PVD increases, the influence degree of the increase of the well resistance on the consolidation rate of the soil will decrease. In addition, when α is large, the average radial degree of consolidation of the soil will eventually tend to be stable, indicating that when the well resistance is large enough, the radial consolidation of the soil will stop, and the time of consolidation stop advances with the increase of α and delays with the increase of kw0.

[0092] The influence of the value of α on the variation law of the degree of consolidation along the depth under different initial permeability coefficients of the PVD is as Figure 9 shown. From Figure 9It can be seen that at any moment, the radial degree of consolidation of the soil gradually decreases with depth and the rate of decrease gradually slows down. At the position near the bottom of the soil layer, the radial degree of consolidation of the soil basically remains unchanged. When Th is very small, the influence of α on the change of the radial degree of consolidation of the soil with depth is not obvious; when Th is relatively large, at the same depth, the degree of consolidation of the soil gradually decreases with the increase of α, and the degree of decrease increases with the increase of Th and gradually increases and tends to be stable with the increase of depth. By comparing the curves corresponding to kw0 = 10-3 m / s and kw0 = 2×10-3 m / s respectively, it can be seen that when the initial permeability coefficient of the PVD is relatively large, the degree of consolidation of the soil at the same depth at the same moment increases, and the degree of increase becomes more obvious with the increase of Th; the degree of decrease of the soil consolidation degree caused by the increase of α will decrease with the increase of kw0, and this phenomenon becomes more obvious with the increase of Th, indicating that the influence of α on the soil consolidation degree at any depth weakens with the increase of kw0.

[0093] The influence of the value of α under different initial permeability coefficients of PVD on the variation law of excess pore water pressure with depth is as Figure 10 shown. During the vacuum preloading process, with the progress of vacuum pumping, negative excess pore water pressure gradually generates in the soil. Under the same conditions, with the increase of depth, the excess pore water pressure gradually decreases and the rate of decrease gradually slows down, and the above phenomenon becomes more obvious with the increase of Th. With the increase of α, the excess pore water pressure at the same depth gradually decreases, and the degree of decrease increases with the increase of depth and finally tends to be stable; the above influence of α is not obvious when Th = 0.25, but it strengthens with the increase of Th. When the initial permeability coefficient of the PVD is relatively large, under the same other conditions, the water permeability capacity of the PVD is stronger, so the negative excess pore water pressure generated in the soil is greater; in addition, under the same α increment, the degree of decrease of the soil excess pore water pressure decreases with the increase of k w0 and indicates that the influence of α weakens during this process, and the larger Th is, the more obvious this phenomenon is.

[0094] 4) Influence of the change of well resistance under different PVD radii: The influence of the value of α under different PVD radii on the average radial degree of consolidation is as Figure 11 shown. It can be seen from Figure 11 that with the increase of the PVD radius, its water permeability capacity increases, the average radial consolidation rate of the soil increases, and this phenomenon is more obvious when α is relatively large. In addition, the degree of decrease of the average radial degree of consolidation of the soil caused by the increase of α weakens with the increase of the PVD radius, meaning that the influence of α weakens accordingly.

[0095] The influence of the value of α under different PVD radii on the variation law of the degree of consolidation with depth is as Figure 12 shown. It can be seen from Figure 12It can be seen that as the PVD radius increases, the average radial degree of consolidation of the soil mass at the same depth increases, and the degree of increase becomes more obvious with the increase of depth. In addition, the degree of decrease in the average degree of consolidation at any depth of the soil mass caused by the increase of α decreases with the increase of the PVD radius.

[0096] The influence of the value of α under different PVD radii on the variation law of excess pore water pressure with depth is as Figure 13 shown. From Figure 13 it can be seen that when the PVD radius increases, the consolidation rate of the soil mass accelerates, so the excess pore water pressure increases; when Th is small, this phenomenon is more obvious in the shallow part, and when Th is large, the shallow soil mass gradually consolidates, so the difference in excess pore water pressure gradually decreases, while the difference in excess pore water pressure in the deep part increases significantly. In addition, when the PVD radius is large, the degree of decrease in excess pore water pressure caused by the increase of α weakens.

[0097] 5) Influence of well resistance variation under different smear radii: The influence of the value of α under different smear radii on the average radial degree of consolidation is as Figure 14 shown. From Figure 14 it can be seen that when the smear radius is large, the average radial degree of consolidation of the soil mass under the same conditions decreases, and the degree of decrease in the average radial degree of consolidation of the soil mass caused by the increase of α increases accordingly.

[0098] The influence of the value of α under different smear radii on the variation law of the degree of consolidation with depth is as Figure 15 shown. From Figure 15 it can be seen that as the smear radius increases, the average radial degree of consolidation at any depth of the soil mass under the same conditions decreases. At the corresponding times of Th = 0.25 and Th = 1, the degree of decrease in the average degree of consolidation at any depth of the soil mass caused by the increase of α decreases slightly with the increase of the smear radius; while at the corresponding time of Th = 2.5, it increases slightly with the increase of the smear radius.

[0099] The influence of the value of α under different smear radii on the variation law of excess pore water pressure with depth is as Figure 16 shown. From Figure 16 it can be seen that when the smear radius increases, the excess pore water pressure at the same depth will decrease, and the consolidation rate of the soil mass will slow down. The degree of decrease in excess pore water pressure caused by the increase of α will decrease with the increase of the smear radius at Th = 0.25 and Th = 1, and will increase slightly with the increase of the smear radius at Th = 2.5.

[0100] 6) Influence of well resistance variation under different degrees of disturbance in the smear zone: The influence of the value of α under different degrees of disturbance in the smear zone on the average radial degree of consolidation is as Figure 17 shown. In the figure, the degree of disturbance in the smear zone is represented by k hIt is reflected by the ratio to k0, and the larger the ratio is, the greater the degree of disturbance. From Figure 17 it can be seen that as the degree of disturbance in the smeared zone increases (i.e., the increase of kh / k0), the radial water permeability of the smeared zone weakens, and the soil consolidation speed slows down; in addition, the degree of decrease in the average radial consolidation degree of the soil caused by the increase of α will increase as the degree of disturbance in the smeared zone increases.

[0101] The influence of the value of α under different degrees of disturbance in the smeared zone on the variation law of the consolidation degree along the depth is as Figure 18 shown. From Figure 18 it can be seen that under the same well resistance change coefficient, the average consolidation degree of the soil at a certain depth decreases as the degree of disturbance in the smeared zone increases, and the degree of decrease decreases as the depth increases at the corresponding moments of Th = 0.25 and Th = 1, and increases as the depth increases at the corresponding moment of Th = 2.5. At the corresponding moments of Th = 0.25 and Th = 1, the degree of decrease in the average consolidation degree of the soil at any depth caused by the increase of α will slightly decrease as the degree of disturbance in the smeared zone increases; while at Th = 2.5, the result is opposite.

[0102] The influence of the value of α under different degrees of disturbance in the smeared zone on the variation law of the excess pore pressure along the depth is as Figure 19 shown. From Figure 19 it can be seen that when other conditions are the same, the greater the degree of disturbance in the smeared zone, the smaller the excess pore pressure at the same depth, that is, the slower the consolidation speed of the soil under the vacuum pressure. As α increases, the excess pore pressure at the same depth gradually decreases, and the degree of decrease weakens as the degree of disturbance in the smeared zone increases at Th = 0.25 and Th = 1, and slightly increases as the degree of disturbance in the smeared zone increases at Th = 2.5.

[0103] 7) Influence of the decay of vacuum degree on the excess pore pressure: The influence of the value of α under different vacuum degree decay coefficients on the variation law of the excess pore pressure along the depth is as Figure 20 shown. From Figure 20 it can be seen that as the vacuum degree decay coefficient decreases, the vacuum degree loss increases, the excess pore pressure at the same depth decreases, and the degree of decrease increases as the depth increases, and the above phenomenon is more obvious when Th is larger. The smaller the vacuum degree decay coefficient (that is, the greater the vacuum degree loss), the smaller the degree of decrease in the excess pore pressure caused by the increase of α, which means the influence of α weakens, and the larger Th is, the more obvious the above phenomenon is.

[0104] Based on the same technical concept, on the second aspect, the present invention also proposes a vacuum preloading consolidation process monitoring device, including: A measurement module, configured to deploy a plurality of sensors on the foundation to be monitored to measure the excess pore pressure and the radial consolidation degree in the soil; A data acquisition module, configured to receive in real time the monitoring data from the sensor and perform preliminary processing; A data transmission module, configured to transmit the processed monitoring data to a remote monitoring center; An early warning module, configured to analyze the monitoring data through an alarm module, judge whether the excess pore pressure or the degree of consolidation is abnormal based on a preset threshold, and send out an audible and visual alarm signal when it is abnormal; wherein, the alarm module is formed in the remote monitoring center.

[0105] The vacuum preloading consolidation process monitoring device provided by the embodiment of the present application adopts the vacuum preloading consolidation process monitoring method in the above embodiment, and can solve the technical problems that when monitoring the consolidation effect of the foundation, monitoring sensors are usually installed at a certain position, and the monitoring sensors are used to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored, and during the monitoring process, it is also impossible to perform real-time alarm according to the monitoring results. Compared with the prior art, the beneficial effects of the vacuum preloading consolidation process monitoring device provided by the embodiment of the present application are the same as those of the vacuum preloading consolidation process monitoring method provided by the above embodiment, and other technical features in the vacuum preloading consolidation process monitoring device are the same as the features disclosed in the above embodiment method, and will not be elaborated here.

[0106] Based on the same technical concept, in a third aspect, the present invention further provides a vacuum preloading consolidation process monitoring device, the vacuum preloading consolidation process monitoring device includes a processor and a memory, and a vacuum preloading consolidation process monitoring program is stored on the memory. When the vacuum preloading consolidation process monitoring program is executed by the processor, the vacuum preloading consolidation process monitoring method described in the first aspect is realized.

[0107] The vacuum preloading consolidation process monitoring device in the embodiment of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), vehicle-mounted terminals (such as vehicle-mounted control terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc.

[0108] The vacuum preloading consolidation process monitoring device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 into the random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the vacuum preloading consolidation process monitoring device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the vacuum preloading consolidation process monitoring device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a vacuum preloading consolidation process monitoring device having various systems, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems can be alternatively implemented or had.

[0109] Specifically, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for performing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0110] The vacuum preloading consolidation process monitoring device provided by this application adopts the vacuum preloading consolidation process monitoring method in the above-mentioned embodiment, which can solve the technical problems that when monitoring the consolidation effect of the foundation, monitoring sensors are usually installed at a certain position, and the monitoring sensors are used to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored, and during the monitoring process, real-time alarm cannot be carried out according to the monitoring results. Compared with the prior art, the beneficial effects of the vacuum preloading consolidation process monitoring device provided by this application are the same as those of the vacuum preloading consolidation process monitoring method provided by the above-mentioned embodiment, and other technical features in the vacuum preloading consolidation process monitoring device are the same as those disclosed in the method of the previous embodiment, which will not be elaborated here.

[0111] It should be understood that each part disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0112] In addition, the vacuum preloading consolidation process monitoring device provided by the embodiments of this application can solve the technical problems that when monitoring the consolidation effect of the foundation, monitoring sensors are usually installed at a certain position, and the monitoring sensors are used to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored, and during the monitoring process, real-time alarm cannot be carried out according to the monitoring results. Compared with the prior art, the beneficial effects of the vacuum preloading consolidation process monitoring device provided by the embodiments of this application are the same as those of the vacuum preloading consolidation process monitoring method provided by the above-mentioned embodiment, and other technical features in the vacuum preloading consolidation process monitoring device are the same as those disclosed in the method of the above-mentioned embodiment, which will not be elaborated here.

[0113] Based on the same technical concept, in the fourth aspect, the present invention also proposes a vacuum preloading consolidation process monitoring system, including: The vacuum preloading consolidation process monitoring device described in the third aspect; and, A plurality of sensors, all of which are communicatively connected to the vacuum preloading consolidation process monitoring device and measure the excess pore pressure and radial consolidation degree in the soil body of the foundation to be monitored.

[0114] In addition, the vacuum preloading consolidation process monitoring system provided by the embodiments of the present application can solve the technical problems that when monitoring the consolidation effect of the foundation, monitoring sensors are usually installed at a certain position to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored, and during the monitoring process, real-time alarm cannot be performed according to the monitoring results. Compared with the prior art, the beneficial effects of the vacuum preloading consolidation process monitoring system provided by the embodiments of the present application are the same as those of the vacuum preloading consolidation process monitoring method provided by the above embodiments, and other technical features in the vacuum preloading consolidation process monitoring system are the same as the features disclosed in the above embodiment method, which will not be elaborated here.

[0115] Based on the same technical concept, in a fifth aspect, the present invention also proposes a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by one or more processors, the vacuum preloading consolidation process monitoring method described in the first aspect is implemented.

[0116] The computer-readable storage medium provided by the present application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM: Random Access Memory), read-only memory (ROM: Read Only Memory), erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0117] The above computer-readable storage medium can be included in the vacuum preloading consolidation process monitoring device; or it can exist separately without being assembled into the vacuum preloading consolidation process monitoring device.

[0118] The above computer-readable storage medium carries one or more programs, which, when executed by the vacuum preloading consolidation process monitoring device, enable the vacuum preloading consolidation process monitoring device to implement the vacuum preloading consolidation process monitoring method described above.

[0119] Computer program code for performing the operations of the present application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0120] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0121] The modules involved in the embodiments described in the present application may be implemented in software or in hardware. In some cases, the name of the module does not constitute a limitation on the unit itself.

[0122] The readable storage medium provided by this application is a computer-readable storage medium. The computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned vacuum preloading consolidation process monitoring method, which can solve the technical problems that when monitoring the consolidation effect of the foundation, usually a monitoring sensor is installed at a certain position to monitor the monitoring position, lacking the monitoring of the entire foundation to be monitored, and during the monitoring process, it is also impossible to give a real-time alarm according to the monitoring results. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the vacuum preloading consolidation process monitoring method provided by the above embodiment, and will not be elaborated here.

[0123] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A method for monitoring the vacuum preloading consolidation process, characterized in that, It includes the following steps: Deploy a plurality of sensors on the foundation to be monitored to obtain the monitoring data of the foundation to be monitored; wherein, the monitoring data includes the excess pore water pressure and the radial degree of consolidation in the soil mass; Start the data acquisition module, and receive the monitoring data from the sensors in real time and perform preliminary processing; Transmit the processed monitoring data to the remote monitoring center; Analyze the monitoring data through the alarm module, judge whether the monitoring data is abnormal based on a preset threshold, and send out an audible and visual alarm signal when it is abnormal; wherein, the alarm module is formed in the remote monitoring center.

2. The vacuum preloading consolidation process monitoring method according to claim 1, wherein, Before the step of deploying a plurality of sensors on the foundation to be monitored to obtain the monitoring data of the foundation to be monitored, it further includes: Set sensors on the foundation to be monitored according to preset parameters to synchronously measure different positions on the foundation to be monitored; wherein, the preset parameters include a preset spacing and a preset depth Collect initial measurement data as a benchmark to correct subsequent measurements; Use the arranged sensors to measure the excess pore water pressure and the radial degree of consolidation in the soil mass.

3. The vacuum preloading consolidation process monitoring method according to claim 2, wherein The step of starting the data acquisition module, receiving the monitoring data from the sensors in real time and performing preliminary processing includes: Start the data acquisition module and receive the monitoring data from the sensors in real time; Perform real-time calibration on the received monitoring data and reduce the data deviation to complete the preliminary processing.

4. The vacuum preloading consolidation process monitoring method according to claim 3, characterized in that, The step of transmitting the processed monitoring data to the remote monitoring center includes: Transmit the processed monitoring data to the remote monitoring center by means of wireless transmission and perform two-way communication with the remote monitoring center.

5. The vacuum preloading consolidation process monitoring method according to claim 3, characterized in that After the step of analyzing the monitoring data through the alarm module, judging whether the excess pore water pressure or the degree of consolidation is abnormal based on a preset threshold, and sending out an audible and visual alarm signal when it is abnormal, it further includes: When an alarm occurs, record the alarm data; wherein, the alarm data includes the trigger time, the sensor position and the measurement parameters.

6. The vacuum preloading consolidation process monitoring method according to claim 5, characterized in that, After the step of recording the alarm data when an alarm occurs, it further includes: Obtain the environmental parameters of the area where the foundation to be monitored is located; According to the environmental parameters, adjust the alarm threshold in real time.

7. A monitoring device for the vacuum preloading consolidation process, characterized in that, It includes: A measurement module for deploying a plurality of sensors on the foundation to be monitored to measure the excess pore water pressure and the radial degree of consolidation in the soil mass; A data acquisition module for receiving the monitoring data from the sensors in real time and performing preliminary processing; A data transmission module for transmitting the processed monitoring data to the remote monitoring center; An early warning module for analyzing the monitoring data through the alarm module, judging whether the excess pore water pressure or the degree of consolidation is abnormal based on a preset threshold, and sending out an audible and visual alarm signal when it is abnormal; wherein, the alarm module is formed in the remote monitoring center.

8. A monitoring device for the vacuum preloading consolidation process, characterized in that, The vacuum preloading consolidation process monitoring device includes a processor and a memory, and a vacuum preloading consolidation process monitoring program is stored on the memory. When the vacuum preloading consolidation process monitoring program is executed by the processor, the vacuum preloading consolidation process monitoring method according to any one of claims 1 to 6 is implemented.

9. A monitoring system for the vacuum preloading consolidation process, characterized in that, It includes: The vacuum preloading consolidation process monitoring device according to claim 8; And, a plurality of sensors, all of the sensors are communicatively connected to the vacuum preloading consolidation process monitoring device and measure the excess pore water pressure and radial consolidation degree in the soil mass of the foundation to be monitored.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the storage medium, and when the computer program is executed by one or more processors, the vacuum preloading consolidation process monitoring method according to any one of claims 1 to 6 is implemented.

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