A method for monitoring dynamic water level in a precipitation well

Abstract

The present invention relates to a method for monitoring the dynamic water level in a precipitation well, comprising: (1) monitoring the original geological conditions around the precipitation well before foundation pit precipitation construction; (2) dynamically monitoring the dynamic water level in the precipitation well during foundation pit precipitation construction, while continuously monitoring the stratum conditions around the precipitation well, and collecting and analyzing monitoring data in real time; (3) calculating the comprehensive impact of the dynamic water level based on the collected data; (4) appropriately adjusting the dynamic water level in the precipitation well based on the comprehensive impact of the dynamic water level to ensure construction safety; (5) writing a monitoring report. The method of the present invention can monitor the dynamic water level in the precipitation well in real time, dynamically, accurately and reliably, determine the time when the precipitation well stops working, so as to ensure the stability of the foundation pit and control the settlement of the surface around the foundation pit, and reduce the impact of the foundation pit construction on the environment.

Description

Technical Field

[0001] The invention relates to the technical field of underground engineering construction, and is a method for monitoring the dynamic water level in a precipitation well. Background Art

[0002] In recent years, underground foundation pit projects have developed towards greater depths and larger areas, and the groundwater problems they face have become increasingly serious. In particular, the pressurized water below the foundation pit excavation surface can cause problems such as pit bottom bulge and bottom plate surge, leading to foundation pit instability. The control of groundwater levels has become the key to the smooth progress of the entire foundation pit project.

[0003] In deep foundation pit dewatering projects, how to reasonably set up dewatering wells is the key to success. Foundation pit dewatering refers to the process of excavating foundation pits. When the groundwater level is higher than the bottom of the excavation, groundwater will continue to seep into the pit. In order to ensure that the foundation pit can be constructed under dry conditions and prevent slope instability, foundation sand flow, pit bottom uplift, pit bottom pipe burst and reduced foundation bearing capacity, dewatering well pipes are buried outside the foundation pit and water is pumped from the dewatering well pipes using submersible pumps to reduce the groundwater level to 1 meter below the excavation surface. This is an engineering method that allows the foundation and foundation engineering construction located below the natural groundwater to avoid the influence of groundwater, improve engineering quality and ensure construction safety.

[0004] However, in the existing foundation pit dewatering construction process, the dynamic water level control in the dewatering well is poor. Due to the lack of relevant equipment and technology, there is a lack of measurement and monitoring of the dynamic water level in the dewatering well. The dewatering cannot reach the designed elevation, affecting the construction progress. If the dewatering is too much, the ground around the foundation pit will undergo a certain degree of settlement and deformation, affecting the construction quality and the surrounding environment. In order to avoid accidents, accurate monitoring of the dynamic water level in the dewatering well is directly related to the safety of foundation pit excavation. Summary of the invention

[0005] In order to overcome the above-mentioned defects in the prior art, the present invention provides a method for monitoring the dynamic water level in a precipitation well. The method of the present invention can monitor the dynamic water level in the precipitation well in real time, dynamically, accurately and reliably, and determine the time when the precipitation well stops working, so as to ensure the stability of the foundation pit and control the settlement of the surface around the foundation pit, thereby reducing the impact of the foundation pit construction on the environment.

[0006] To achieve the above object, the present invention provides a method for monitoring the dynamic water level in a precipitation well, comprising:

[0007] (1) Monitor the original geological conditions around the dewatering well before the foundation pit dewatering construction;

[0008] Use sensor monitoring devices to continuously monitor the formation conditions and aquifer water level around the precipitation wells for a long time, analyze and study the original geological structure characteristics of the surrounding areas, and study the water level dynamic characteristics of the original aquifers around the precipitation wells;

[0009] (2) During the foundation pit dewatering construction process, the dynamic water level in the dewatering well is dynamically monitored, and the ground conditions around the dewatering well are continuously monitored, and monitoring data are collected and analyzed in real time;

[0010] After the foundation pit dewatering construction begins, the dynamic water level in the dewatering well is dynamically monitored by a sensor monitoring device set at a preset position in the dewatering well, including the real-time water level height and the water pressure at the water level height, and data collection and analysis are performed in real time to obtain the average water level height and the corresponding average water pressure within the Δt time period;

[0011] (3) Calculate the comprehensive impact of dynamic water level based on the collected data;

[0012] According to the characteristics obtained in step (1) and the data in step (2), the water level change amplitude and the water pressure change amplitude are calculated to obtain the comprehensive impact of the dynamic water level;

[0013] (4) According to the comprehensive impact of the dynamic water level, the dynamic water level in the precipitation well shall be appropriately adjusted to ensure construction safety;

[0014] (5) After the monitoring work of a time interval is completed, the data of various sensor monitoring devices shall be processed in a timely manner to eliminate the monitoring noise data; various data result tables and curve graphs shall be compiled for reliable data, the monitoring results shall be comprehensively analyzed, and a monitoring report shall be written.

[0015] Preferably, in step (1), analyzing and studying the original geological structure characteristics of the surrounding area includes: analyzing the influence of water level and water pressure changes on the stability of the formation through mechanical tests, and conducting uniaxial and triaxial compression tests under different saturation-dehydration cycle conditions; using finite element analysis to analyze the changes in the stability of the formation when the water level and water pressure change by establishing a numerical model, and determining the critical value of formation instability.

[0016] In any of the above schemes, preferably, in step (1), studying the water level dynamic characteristics of the original aquifer around the precipitation well includes:

[0017] a. Collect and collate the existing geological and hydrogeological data around the precipitation wells, conduct preliminary analysis and research on the stratigraphic structure characteristics and main groundwater aquifers around the precipitation wells, and determine the water level of the main aquifers that need to be dynamically monitored;

[0018] b) continuously recording the water level height of the main aquifer around the monitored precipitation well and the water pressure data at the corresponding water level height at time intervals of specific length Δt during the long-term period, and obtaining the average water level height and average water pressure data during the long-term period.

[0019] In any of the above schemes, it is preferred that in step (2), the specific operation is: when the foundation pit dewatering construction starts, when the water level in the dewatering well is stable, the time t is set to the initial value 0, and this is set as the initial height of the monitored water level and the corresponding initial water pressure; pumping continues, the water level drops, and the water level and the corresponding water pressure monitored by each sensor monitoring device at time t are collected; data is collected in real time and transmitted to the monitoring system center for analysis, and the water level and the corresponding water pressure monitored at time t are subtracted from the initial height of the water level and the corresponding initial water pressure, respectively, to obtain the average water level and the corresponding average water pressure within the Δt time period.

[0020] In any of the above schemes, it is preferred that in step (3), after calculating the water level change amplitude and the water pressure change amplitude, the change in the stability state of the formation around the precipitation well is analyzed to determine whether the formation is in a stable state during this period, thereby obtaining the comprehensive impact of the dynamic water level.

[0021] In any of the above schemes, it is preferred that the numerical model in step (1) is a conventional numerical model in the art.

[0022] In any of the above schemes, it is preferred that in step (4), appropriate adjustment of the dynamic water level in the precipitation well can be carried out by setting up an automatic pumping device, and the automatic pumping device is controlled by a controller, and the controller receives corresponding instructions derived from the comprehensive influence of the dynamic water level to control the opening and closing of the automatic pumping device.

[0023] In any of the above solutions, it is preferred that the automatic water pumping device is an induction water pump.

[0024] The beneficial effects of the present invention are:

[0025] 1. The method of the present invention can monitor the dynamic water level in the precipitation well in real time, dynamically, accurately and reliably, and determine the time when the precipitation well stops working, so as to ensure the stability of the foundation pit and control the settlement of the surface around the foundation pit, thereby reducing the impact of the foundation pit construction on the environment.

[0026] 2. The method of the present invention has both real-time point value monitoring of the dynamic water level and time interval monitoring within a duration range, thus realizing multi-directional dynamic water level monitoring and making the monitoring results more accurate and comprehensive.

[0027] 3. The method of the present invention does not simply monitor the unidirectional change of the dynamic water level, but comprehensively realizes the monitoring of the dynamic water level by monitoring the groundwater pressure and the changes in the stability of the formation and judging them, so that the monitoring results are more scientific, and the credibility and accuracy of the results are higher.

[0028] 4. The monitoring results of the present invention are accurate and reliable, with a wide range of applications. It can monitor the dynamic water level changes in real time and dynamically, providing a reliable basis for ensuring the safety and quality of foundation pit construction. DETAILED DESCRIPTION

[0029] The technical solution of the present application will be described in detail below in conjunction with the specific implementation methods of the present application, but the following examples are only for understanding the present invention. The embodiments in the present application and the features in the embodiments can be combined with each other, and the present application can be implemented in a variety of different ways as defined and covered by the claims.

[0030] Example 1

[0031] A method for monitoring the dynamic water level in a precipitation well, comprising:

[0032] (1) Monitor the original geological conditions around the dewatering well before the foundation pit dewatering construction;

[0033] Use sensor monitoring devices to continuously monitor the formation conditions and aquifer water level around the precipitation wells for a long time, analyze and study the original geological structure characteristics of the surrounding areas, and study the water level dynamic characteristics of the original aquifers around the precipitation wells;

[0034] (2) During the foundation pit dewatering construction process, the dynamic water level in the dewatering well is dynamically monitored, and the ground conditions around the dewatering well are continuously monitored, and monitoring data are collected and analyzed in real time;

[0035] After the foundation pit dewatering construction begins, the dynamic water level in the dewatering well is dynamically monitored by a sensor monitoring device set at a preset position in the dewatering well, including the real-time water level height and the water pressure at the water level height, and data collection and analysis are performed in real time to obtain the average water level height and the corresponding average water pressure within the Δt time period;

[0036] (3) Calculate the comprehensive impact of dynamic water level based on the collected data;

[0037] According to the characteristics obtained in step (1) and the data in step (2), the water level change amplitude and the water pressure change amplitude are calculated to obtain the comprehensive impact of the dynamic water level;

[0038] (4) According to the comprehensive impact of the dynamic water level, the dynamic water level in the precipitation well shall be appropriately adjusted to ensure construction safety;

[0039] (5) After the monitoring work of a time interval is completed, the data of various sensor monitoring devices shall be processed in a timely manner to eliminate the monitoring noise data; various data result tables and curve graphs shall be compiled for reliable data, the monitoring results shall be comprehensively analyzed, and a monitoring report shall be written.

[0040] In the step (1), the analysis and study of the original geological structure characteristics of the surrounding area includes: analyzing the influence of water level and water pressure changes on the stability of the formation through mechanical tests, and conducting uniaxial and triaxial compression tests under different saturation-dehydration cycle conditions; using finite element analysis to analyze the changes in the stability of the formation when the water level and water pressure change by establishing a numerical model, and determining the critical value of formation instability.

[0041] In the step (1), studying the water level dynamic characteristics of the original aquifer around the dewatering well includes:

[0042] a. Collect and collate the existing geological and hydrogeological data around the precipitation wells, conduct preliminary analysis and research on the stratigraphic structure characteristics and main groundwater aquifers around the precipitation wells, and determine the water level of the main aquifers that need to be dynamically monitored;

[0043] b) continuously recording the water level height of the main aquifer around the monitored precipitation well and the water pressure data at the corresponding water level height at time intervals of specific length Δt during the long-term period, and obtaining the average water level height and average water pressure data during the long-term period.

[0044] In the step (2), the specific operation is as follows: when the foundation pit dewatering construction starts, the water level in the dewatering well is stable, the time t is set to the initial value 0, and this is set as the initial height of the monitored water level and the corresponding initial water pressure; the water is pumped continuously, the water level drops, and the water level and the corresponding water pressure monitored by each sensor monitoring device at time t are collected; data is collected in real time and transmitted to the monitoring system center for analysis, and the water level and the corresponding water pressure monitored at time t are respectively subtracted from the initial height of the water level and the corresponding initial water pressure, so as to obtain the average water level and the corresponding average water pressure within the time period Δt.

[0045] In step (3), after calculating the water level change amplitude and the water pressure change amplitude, the change in the stability state of the formation around the precipitation well is analyzed to determine whether the formation is in a stable state during this period, thereby obtaining the comprehensive impact of the dynamic water level.

[0046] The numerical model in step (1) is a conventional numerical model in the art.

[0047] In step (4), the dynamic water level in the precipitation well can be appropriately adjusted by setting up an automatic pumping device, which is controlled by a controller. The controller receives corresponding instructions based on the comprehensive influence of the dynamic water level to control the opening and closing of the automatic pumping device.

[0048] The automatic water pumping device is an induction type water pump.

[0049] Example 2

[0050] A method for monitoring the dynamic water level in a precipitation well, comprising:

[0051] (1) Monitor the original geological conditions around the dewatering well before the foundation pit dewatering construction;

[0052] Use sensor monitoring devices to continuously monitor the formation conditions and aquifer water level around the precipitation wells for a long time, analyze and study the original geological structure characteristics of the surrounding areas, and study the water level dynamic characteristics of the original aquifers around the precipitation wells;

[0053] (2) During the foundation pit dewatering construction process, the dynamic water level in the dewatering well is dynamically monitored, and the ground conditions around the dewatering well are continuously monitored, and monitoring data are collected and analyzed in real time;

[0054] After the foundation pit dewatering construction begins, the dynamic water level in the dewatering well is dynamically monitored by a sensor monitoring device set at a preset position in the dewatering well, including the real-time water level height and the water pressure at the water level height, and data collection and analysis are performed in real time to obtain the average water level height and the corresponding average water pressure within the Δt time period;

[0055] (3) Calculate the comprehensive impact of dynamic water level based on the collected data;

[0056] According to the characteristics obtained in step (1) and the data in step (2), the water level change amplitude and the water pressure change amplitude are calculated to obtain the comprehensive impact of the dynamic water level;

[0057] (4) According to the comprehensive impact of the dynamic water level, the dynamic water level in the precipitation well shall be appropriately adjusted to ensure construction safety;

[0058] (5) After the monitoring work of a time interval is completed, the data of various sensor monitoring devices shall be processed in a timely manner to eliminate the monitoring noise data; various data result tables and curve graphs shall be compiled for reliable data, the monitoring results shall be comprehensively analyzed, and a monitoring report shall be written.

[0059] In the step (1), the analysis and study of the original geological structure characteristics of the surrounding area includes: analyzing the influence of water level and water pressure changes on the stability of the formation through mechanical tests, and conducting uniaxial and triaxial compression tests under different saturation-dehydration cycle conditions; using finite element analysis to analyze the changes in the stability of the formation when the water level and water pressure change by establishing a numerical model, and determining the critical value of formation instability.

[0060] In the step (1), studying the water level dynamic characteristics of the original aquifer around the dewatering well includes:

[0061] a. Collect and collate the existing geological and hydrogeological data around the precipitation wells, conduct preliminary analysis and research on the stratigraphic structure characteristics and main groundwater aquifers around the precipitation wells, and determine the water level of the main aquifers that need to be dynamically monitored;

[0062] b) continuously recording the water level height of the main aquifer around the monitored precipitation well and the water pressure data at the corresponding water level height at time intervals of specific length Δt during the long-term period, and obtaining the average water level height and average water pressure data during the long-term period.

[0063] In the step (2), the specific operation is as follows: when the foundation pit dewatering construction starts, the water level in the dewatering well is stable, the time t is set to the initial value 0, and this is set as the initial height of the monitored water level and the corresponding initial water pressure; the water is pumped continuously, the water level drops, and the water level and the corresponding water pressure monitored by each sensor monitoring device at time t are collected; data is collected in real time and transmitted to the monitoring system center for analysis, and the water level and the corresponding water pressure monitored at time t are respectively subtracted from the initial height of the water level and the corresponding initial water pressure, so as to obtain the average water level and the corresponding average water pressure within the time period Δt.

[0064] In step (3), after calculating the water level change amplitude and the water pressure change amplitude, the change in the stability state of the formation around the precipitation well is analyzed to determine whether the formation is in a stable state during this period, thereby obtaining the comprehensive impact of the dynamic water level.

[0065] The numerical model in step (1) is a conventional numerical model in the art.

[0066] In step (4), the dynamic water level in the precipitation well can be appropriately adjusted by setting up an automatic pumping device, which is controlled by a controller. The controller receives corresponding instructions based on the comprehensive influence of the dynamic water level to control the opening and closing of the automatic pumping device.

[0067] The automatic water pumping device is an induction type water pump.

[0068] In this embodiment, in order to ensure that the monitoring data is more accurate, the monitoring data after the monitoring noise data is removed is subjected to continuity improvement processing:

[0069] For the cumulative water level changes L1, L2, L3…Ld…Ln, n is the sequential time, n is an integer greater than 10, and d is the number of elimination points;

[0070] The corresponding time series is t1, t2, t3…td…tn. If d data are removed between t1…tn, the continuity value after removal is calculated using the following formula:

[0071] Ld=L1+((Ln-L1) / (tn-t1)).

[0072] In addition, in order to intuitively describe the deformation characteristics of the stable state of the formation, the monitoring data is mainly organized and analyzed by various charts, such as: formation displacement-water level-water pressure-time relationship curve, formation fracture displacement-water level-water pressure relationship curve, formation instability displacement rate curve, formation instability displacement vector, etc.

[0073] Using multiple variable parameter indicators, emphasizing water level monitoring, and selecting reasonable monitoring frequencies and early warning values ​​is a more comprehensive and reasonable monitoring method.

[0074] Example 3

[0075] A method for monitoring the dynamic water level in a precipitation well, comprising:

[0076] (1) Monitor the original geological conditions around the dewatering well before the foundation pit dewatering construction;

[0077] Use sensor monitoring devices to continuously monitor the formation conditions and aquifer water level around the precipitation wells for a long time, analyze and study the original geological structure characteristics of the surrounding areas, and study the water level dynamic characteristics of the original aquifers around the precipitation wells;

[0078] (2) During the foundation pit dewatering construction process, the dynamic water level in the dewatering well is dynamically monitored, and the ground conditions around the dewatering well are continuously monitored, and monitoring data are collected and analyzed in real time;

[0079] After the foundation pit dewatering construction begins, the dynamic water level in the dewatering well is dynamically monitored by a sensor monitoring device set at a preset position in the dewatering well, including the real-time water level height and the water pressure at the water level height, and data collection and analysis are performed in real time to obtain the average water level height and the corresponding average water pressure within the Δt time period;

[0080] (3) Calculate the comprehensive impact of dynamic water level based on the collected data;

[0081] According to the characteristics obtained in step (1) and the data in step (2), the water level change amplitude and the water pressure change amplitude are calculated to obtain the comprehensive impact of the dynamic water level;

[0082] (4) According to the comprehensive impact of the dynamic water level, the dynamic water level in the precipitation well shall be appropriately adjusted to ensure construction safety;

[0083] (5) After the monitoring work of a time interval is completed, the data of various sensor monitoring devices shall be processed in a timely manner to eliminate the monitoring noise data; various data result tables and curve graphs shall be compiled for reliable data, the monitoring results shall be comprehensively analyzed, and a monitoring report shall be written.

[0084] In the step (1), the analysis and study of the original geological structure characteristics of the surrounding area includes: analyzing the influence of water level and water pressure changes on the stability of the formation through mechanical tests, and conducting uniaxial and triaxial compression tests under different saturation-dehydration cycle conditions; using finite element analysis to analyze the changes in the stability of the formation when the water level and water pressure change by establishing a numerical model, and determining the critical value of formation instability.

[0085] In the step (1), studying the water level dynamic characteristics of the original aquifer around the dewatering well includes:

[0086] a. Collect and collate the existing geological and hydrogeological data around the precipitation wells, conduct preliminary analysis and research on the stratigraphic structure characteristics and main groundwater aquifers around the precipitation wells, and determine the water level of the main aquifers that need to be dynamically monitored;

[0087] b) continuously recording the water level height of the main aquifer around the monitored precipitation well and the water pressure data at the corresponding water level height at time intervals of specific length Δt during the long-term period, and obtaining the average water level height and average water pressure data during the long-term period.

[0088] In the step (2), the specific operation is as follows: when the foundation pit dewatering construction starts, the water level in the dewatering well is stable, the time t is set to the initial value 0, and this is set as the initial height of the monitored water level and the corresponding initial water pressure; the water is pumped continuously, the water level drops, and the water level and the corresponding water pressure monitored by each sensor monitoring device at time t are collected; data is collected in real time and transmitted to the monitoring system center for analysis, and the water level and the corresponding water pressure monitored at time t are respectively subtracted from the initial height of the water level and the corresponding initial water pressure, so as to obtain the average water level and the corresponding average water pressure within the time period Δt.

[0089] In step (3), after calculating the water level change amplitude and the water pressure change amplitude, the change in the stability state of the formation around the precipitation well is analyzed to determine whether the formation is in a stable state during this period, thereby obtaining the comprehensive impact of the dynamic water level.

[0090] The numerical model in step (1) is a conventional numerical model in the art.

[0091] In step (4), the dynamic water level in the precipitation well can be appropriately adjusted by setting up an automatic pumping device, which is controlled by a controller. The controller receives corresponding instructions based on the comprehensive influence of the dynamic water level to control the opening and closing of the automatic pumping device.

[0092] The automatic water pumping device is an induction type water pump.

[0093] In order to further improve the technical effect of the present invention, in this embodiment, the calculation of the water level change amplitude and the water pressure change amplitude in step (3) is performed by a calculation and analysis module.

[0094] The induction pump includes an intelligent control module, a water head pressure sensing module, a water pump, and a motor. The intelligent control module is connected to the water head pressure sensing module via Bluetooth. The motor controls the operation of the water pump. The intelligent control module is electrically connected to the motor to control the operation of the motor. The intelligent control module learns the surrounding water pressure through the water head pressure sensing module to perform intelligent control. The induction pump also includes a remote sensing server and a remote control terminal. The intelligent control module, remote sensing server, and remote control terminal are connected in sequence via Bluetooth.

[0095] The remote sensing server includes an alarm and a monitor; the alarm issues an abnormal alarm based on the fault code uploaded by the intelligent control module and pops up a window to remind the user. The monitor monitors the voltage, current, working mode and operation mode in real time.

[0096] The induction water pump of the present invention has a simple structure, high anti-interference ability, can adapt to a variety of harsh environments, has strong moisture and humidity resistance, long service life and low failure rate.

[0097] It can be seen from the above embodiments that the method of the present invention can monitor the dynamic water level in the precipitation well in real time, dynamically, accurately and reliably, and determine the time when the precipitation well stops working, so as to ensure the stability of the foundation pit and control the settlement of the surface around the foundation pit, thereby reducing the impact of foundation pit construction on the environment.

[0098] The method of the present invention has both real-time point value monitoring of the dynamic water level and time interval monitoring within a duration range, thus realizing multi-directional dynamic water level monitoring and making the monitoring results more accurate and comprehensive.

[0099] The method of the present invention does not simply monitor the unidirectional change of the dynamic water level, but comprehensively realizes the monitoring of the dynamic water level by monitoring the groundwater pressure and the change monitoring and judgment of the stability state of the formation, so that the monitoring result is more scientific, and the credibility and accuracy of the result are higher.

[0100] The monitoring result of the present invention is accurate and reliable, has a wide range of applications, can monitor the dynamic water level changes in real time and dynamically, and provides a reliable basis for ensuring the safety and quality of foundation pit construction.

[0101] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A method for monitoring the dynamic water level in a precipitation well, characterized in that: include: (1) Monitor the original geological conditions around the dewatering well before the foundation pit dewatering construction; Use sensor monitoring devices to continuously monitor the formation conditions and aquifer water level around the precipitation wells for a long time, analyze and study the original geological structure characteristics of the surrounding areas, and study the water level dynamic characteristics of the original aquifers around the precipitation wells; (2) During the foundation pit dewatering construction process, the dynamic water level in the dewatering well is dynamically monitored, and the ground conditions around the dewatering well are continuously monitored, and monitoring data are collected and analyzed in real time; After the foundation pit dewatering construction begins, the dynamic water level in the dewatering well is dynamically monitored by a sensor monitoring device set at a preset position in the dewatering well, including the real-time water level height and the water pressure at the water level height, and data collection and analysis are performed in real time to obtain the average water level height and the corresponding average water pressure within the Δt time period; (3) Calculate the comprehensive impact of dynamic water level based on the collected data; According to the characteristics obtained in step (1) and the data in step (2), the water level change amplitude and the water pressure change amplitude are calculated to obtain the comprehensive impact of the dynamic water level; (4) According to the comprehensive impact of the dynamic water level, the dynamic water level in the precipitation well shall be appropriately adjusted to ensure construction safety; (5) After the monitoring work of a time interval is completed, the data of various sensor monitoring devices shall be processed in a timely manner to eliminate the monitoring noise data; various data result tables and curve graphs shall be compiled for reliable data, the monitoring results shall be comprehensively analyzed, and a monitoring report shall be written; In the step (1), the analysis and study of the original geological structure characteristics of the surrounding area includes: analyzing the influence of water level and water pressure changes on the stability of the formation through mechanical tests, and conducting uniaxial and triaxial compression tests under different saturation-dehydration cycle conditions; using finite element method analysis, by establishing a numerical model to analyze the changes in the stability of the formation when the water level and water pressure change, and determining the critical value of formation instability; In the step (1), studying the water level dynamic characteristics of the original aquifer around the dewatering well includes: a. Collect and collate the existing geological and hydrogeological data around the precipitation wells, conduct preliminary analysis and research on the stratigraphic structure characteristics and main groundwater aquifers around the precipitation wells, and determine the water level of the main aquifers that need to be dynamically monitored; b. continuously record the water level height of the main aquifer around the monitored precipitation well and the water pressure data at the corresponding water level height at time intervals of specific length Δt during the long-term period, and obtain the average water level height and average water pressure data during the long-term period.

2. The method for monitoring the dynamic water level in a precipitation well according to claim 1, characterized in that: In the step (2), the specific operation is as follows: when the foundation pit dewatering construction starts, the water level in the dewatering well is stabilized, the time t is set to the initial value 0, and the initial height of the monitored water level and the corresponding initial water pressure are set to this value; the water is pumped continuously, the water level drops, and the water level and the corresponding water pressure monitored by each sensor monitoring device at time t are collected; data is collected in real time and transmitted to the monitoring system center for analysis, and the water level and the corresponding water pressure monitored at time t are respectively subtracted from the initial height of the water level and the corresponding initial water pressure, so as to obtain the average water level and the corresponding average water pressure within the time period Δt.

3. The method for monitoring the dynamic water level in a precipitation well according to any one of claims 1-2, characterized in that: In step (3), after calculating the water level change amplitude and the water pressure change amplitude, the change in the stability state of the formation around the precipitation well is analyzed to determine whether the formation is in a stable state during this period, thereby obtaining the comprehensive impact of the dynamic water level.

4. The method for monitoring the dynamic water level in a precipitation well according to claim 3, characterized in that: In step (4), the dynamic water level in the precipitation well can be appropriately adjusted by providing an automatic pumping device, wherein the automatic pumping device is controlled by a controller, and the controller receives corresponding instructions based on the comprehensive influence of the dynamic water level to control the opening and closing of the automatic pumping device.

5. The method for monitoring the dynamic water level in a precipitation well according to claim 4, characterized in that: The automatic water pumping device is an induction type water pump.