A method for dynamically dewatering a foundation pit based on a precipitation well platform

Abstract

The present invention relates to a method for dynamically dewatering a foundation pit based on a dewatering well platform. The measuring column is connected to a lifting motor and a cable drive mechanism, and is telescopically inserted through the dewatering well pipe. The measuring column measures the liquid level inside the dewatering well pipe within the dewatering well pipe and displays the liquid level signal on an electronic display screen; the water inflow is measured based on the measuring column, and the operation mode of the automatic dewatering monitoring system is triggered based on the water inflow, so as to trigger the operation mode of the automatic dewatering monitoring system according to different water inflows, ensuring the application of the automatic dewatering monitoring system in various scenarios. Moreover, the high water level, low water level, and warning water level are input into the automatic dewatering monitoring system to trigger dynamic dewatering, so that the automatic dewatering monitoring system can adjust the precipitation amount according to the high water level, low water level, and warning water level, facilitating the completion of the dewatering target at the fastest speed and being able to timely adjust the water level elevation to prevent over-pumping, ensuring a state of dynamic balance.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit dewatering, and particularly to a method for dynamically dewatering a foundation pit based on a dewatering well platform. Background Art

[0002] With the development of the economy and the continuous expansion of project construction, the proportion of projects with good geology is increasing, and the possibility of better site selection is decreasing. More and more projects with poor geology are emerging. Dewatering works in deep foundation pit construction have always been an important part for the implementation of the project.

[0003] Generally, foundation pit dewatering is carried out under the guidance of geological exploration and on-site pumping test data. The total water inflow, single well water yield, and number of wells are calculated through numerical simulation, theoretical formula, and specification methods, and then dewatering construction is carried out according to the principle of dewatering as needed.

[0004] However, there are occasionally phenomena where the geological exploration report is not detailed enough and the actual in-situ permeability coefficient is much greater than the geological exploration data. Similarly, when selecting points for the pumping test, complex geological cross-sections are encountered, resulting in the initial designed total water inflow being less than the actual total water inflow on site. At this time, the original design scheme cannot meet the needs of on-site construction.

[0005] Among them, the dewatering of the foundation pit is statically regulated using a preset target quantity and a one-time operation is performed. However, the situation of the foundation pit in the actual scenario is relatively complex, and over-pumping is likely to occur due to the water level elevation under single dewatering, often causing great economic losses. Summary of the Invention

[0006] The purpose of the embodiments of this application is to propose a method for dynamically dewatering a foundation pit based on a dewatering well platform to solve the problem that the existing dewatering of the foundation pit is statically regulated using a preset target quantity.

[0007] To solve the above technical problems, the embodiments of this application provide a method for dynamically dewatering a foundation pit based on a dewatering well platform, and adopt the following technical solutions:

[0008] Weld the dewatering well platform to the dewatering well pipe. Among them, the dewatering well platform is provided with a lifting motor, a cable drive mechanism, and a measuring column;

[0009] Connect the measuring column to the lifting motor and the cable drive mechanism, and telescopically penetrate the dewatering well pipe;

[0010] The measuring column measures the liquid level inside the dewatering well pipe within the dewatering well pipe and displays the liquid level signal on an electronic display screen;

[0011] Measure the water inflow based on the measuring column, and trigger the operation mode of the automated precipitation monitoring system based on the water inflow. Among them, operation mode 1 of the automated precipitation monitoring system is applicable to the situation where the water inflow is relatively stable, and operation mode 2 of the automated precipitation monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large;

[0012] Obtain the hydraulic gradient of the site near the foundation pit, and determine the corresponding high water level, low water level, and warning water level to be set according to the hydraulic gradient;

[0013] Input the high water level, low water level, and warning water level into the automated precipitation monitoring system to trigger dynamic precipitation.

[0014] Optionally, weld the precipitation well platform to the precipitation well pipe. The precipitation well platform is provided with a lifting motor, a cable drive mechanism, and a measuring column, including:

[0015] The precipitation well pipe is arranged vertically;

[0016] The precipitation well platform is welded to the precipitation well pipe and is located at the top of the precipitation well pipe;

[0017] The precipitation well platform is provided with a lifting motor, a cable drive mechanism, and a measuring column. Both ends of the cable drive mechanism are respectively connected to the lifting motor and the measuring column, and drive the measuring column to lift.

[0018] Optionally, the measuring column measures the liquid level in the precipitation well pipe inside the precipitation well pipe and displays the liquid level signal on an electronic display screen, including:

[0019] The measuring column is lifted and lowered in the precipitation well pipe under the drive of the cable drive mechanism;

[0020] The measuring column moves along the axis of the precipitation well pipe to the water surface in the precipitation well pipe and measures the liquid level in the precipitation well pipe. Among them, the measuring column is connected with a water pump, and the water pump sucks the water in the precipitation well pipe.

[0021] Optionally, the measuring column measures the liquid level in the precipitation well pipe inside the precipitation well pipe and displays the liquid level signal on an electronic display screen, and further includes:

[0022] Send a lifting command to the lifting motor through the automated precipitation monitoring system;

[0023] The lifting motor works according to the command and adjusts the position of the measuring column through the cable drive mechanism;

[0024] The water pump adjusts along with the position adjustment of the measuring column and changes the elevation position of the water pump;

[0025] The measuring column measures the liquid level in the precipitation well pipe inside the precipitation well pipe and displays the liquid level signal on an electronic display screen.

[0026] Optionally, measure the water inflow based on the measuring column and trigger the operation mode of the automatic precipitation monitoring system based on the water inflow. Among them, operation mode 1 of the automatic precipitation monitoring system is applicable to the situation where the water inflow is relatively stable, and operation mode 2 of the automatic precipitation monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large, including:

[0027] Measure the water inflow based on the measuring column;

[0028] Trigger the operation mode of the automatic precipitation monitoring system according to the water inflow situation;

[0029] If the water inflow is relatively stable, trigger operation mode 1 of the automatic precipitation monitoring system;

[0030] In operation mode 1 of the automatic precipitation monitoring system, set the warning water level, high water level, and low water level;

[0031] If the water level is higher than the set low water level, the water pump continues to pump water;

[0032] If the water level is lower than the set low water level, the water pump stops pumping water.

[0033] Optionally, measure the water inflow based on the measuring column and trigger the operation mode of the automatic precipitation monitoring system based on the water inflow. Among them, operation mode 1 of the automatic precipitation monitoring system is applicable to the situation where the water inflow is relatively stable, and operation mode 2 of the automatic precipitation monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large. It also includes:

[0034] If the water level is higher than the set high water level, turn on the water pump to pump water;

[0035] If the water pump is successfully turned on, continue to return to system self-check;

[0036] If the water pump is not turned on, alarm; or, if the water level exceeds the warning water level, alarm;

[0037] Optionally, measure the water inflow based on the measuring column and trigger the operation mode of the automatic precipitation monitoring system based on the water inflow. Among them, operation mode 1 of the automatic precipitation monitoring system is applicable to the situation where the water inflow is relatively stable, and operation mode 2 of the automatic precipitation monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large. It also includes:

[0038] If the water inflow is unstable and the water volume is large, trigger operation mode 2 of the automatic precipitation monitoring system;

[0039] In operation mode 2 of the automatic precipitation monitoring system, set the warning water level, high water level, and low water level;

[0040] If the water level is higher than the set low water level, lower the water pump by 0.1 m;

[0041] If the water level is lower than the set low water level, the water pump is raised by 0.2 m.

[0042] Optionally, the water inflow is measured based on the measuring column, and the operation mode of the automatic precipitation monitoring system is triggered based on the water inflow. Among them, operation mode one of the automatic precipitation monitoring system is applicable to the situation where the water inflow is relatively stable, and operation mode two of the automatic precipitation monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large. It also includes:

[0043] If the water level is higher than the set high water level, the water pump is lowered by 1 m;

[0044] If the water level is lower than the set low water level, the water pump continues to pump water.

[0045] Optionally, inputting the high water level, low water level, and warning water level into the automatic precipitation monitoring system to trigger dynamic precipitation includes:

[0046] The hydraulic gradient i = △h / L, where △h is the difference in water level between the inside of the precipitation well and the water level at the inner side of the foundation pit's water-stop curtain, and L is the vertical distance from the center of the precipitation well to the water-stop curtain of the foundation pit;

[0047] The hydraulic gradient of the site near the foundation pit can be calculated based on the pumping test;

[0048] Based on the positions of the on-site precipitation wells and the designed water level of the precipitation elevation, calculate the high water level, low water level, and warning water level that need to be set in the automatic precipitation monitoring system;

[0049] Input the high water level, low water level, and warning water level into the automatic precipitation monitoring system to trigger dynamic precipitation.

[0050] This application provides a method for dynamically precipitating a foundation pit based on a precipitation well platform. The measuring column is connected to a lifting motor and a cable drive mechanism, and is telescopically inserted through the precipitation well pipe. The measuring column measures the liquid level inside the precipitation well pipe within the precipitation well pipe and displays the liquid level signal on an electronic display screen; the water inflow is measured based on the measuring column, and the operation mode of the automatic precipitation monitoring system is triggered based on the water inflow, so as to trigger the operation mode of the automatic precipitation monitoring system according to different water inflows, ensuring the application of the automatic precipitation monitoring system in multiple scenarios, and inputting the high water level, low water level, and warning water level into the automatic precipitation monitoring system to trigger dynamic precipitation, so that the automatic precipitation monitoring system can adjust the precipitation amount according to the high water level, low water level, and warning water level, so as to complete the precipitation target at the fastest speed and be able to adjust the water level elevation in time to prevent over-pumping, ensuring a state of dynamic balance. Description of the Drawings

[0051] To more clearly illustrate the solutions in this application, the following will briefly introduce the attached drawings required for the description of the embodiments of this application. Obviously, the attached drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0052] Figure 1 It is a flowchart of the implementation of the method for dynamically dewatering a foundation pit based on a dewatering well platform provided in Embodiment 1 of this application;

[0053] Figure 2 is Figure 1 a flowchart of a specific implementation manner of step S110 in

[0054] Figure 3 is Figure 1 a flowchart of another specific implementation manner of step S130 in

[0055] Figure 4 is Figure 1 a flowchart of another specific implementation manner of step S140 in

[0056] Figure 5 is Figure 1 an actual flowchart of operation mode 1 in step S140 in

[0057] Figure 6 is Figure 1 an actual flowchart of operation mode 2 in step S140 in

[0058] Figure 7 It is a schematic diagram of dynamic dewatering of the method for dynamically dewatering a foundation pit based on a dewatering well platform provided in the embodiments of this application.

[0059] Figure 8 A schematic diagram of the dewatering well platform of the method for dynamically dewatering a foundation pit based on a dewatering well platform provided in the embodiments of this application. Specific implementation manner

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of the embodiments of this application in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above attached drawing descriptions are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above attached drawings are used to distinguish different objects and are not used to describe a specific order.

[0061] References herein to "embodiments" mean that particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments.

[0062] To enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0063] Embodiment 1

[0064] Continuing to refer to Figures 1 to 8 , which shows the implementation flowchart of the method for dynamically dewatering a foundation pit based on a dewatering well platform provided in Embodiment 1 of the present application. The method for dynamically dewatering a foundation pit based on a dewatering well platform includes steps S110 to S160.

[0065] Step S110: Weld the dewatering well platform to the dewatering well pipe. The dewatering well platform is provided with a lifting motor, a cable drive mechanism, and a measuring column.

[0066] Specifically, it includes:

[0067] Step S111: Arrange the dewatering well pipe in the vertical direction;

[0068] Step S112: Weld the dewatering well platform to the dewatering well pipe and be at the top of the dewatering well pipe;

[0069] Step S113: The dewatering well platform is provided with a lifting motor, a cable drive mechanism, and a measuring column. Both ends of the cable drive mechanism are respectively connected to the lifting motor and the measuring column, and drive the measuring column to lift.

[0070] Step S120: Connect the measuring column to the lifting motor and the cable drive mechanism, and telescopically penetrate the dewatering well pipe.

[0071] Step S130: The measuring column measures the liquid level in the dewatering well pipe within the dewatering well pipe and displays the liquid level signal on an electronic display screen.

[0072] Specifically, it includes:

[0073] Step S131: The measuring column is lifted and lowered within the dewatering well pipe driven by the cable drive mechanism;

[0074] Among them, the measuring column is lifted and lowered driven by the cable drive mechanism and the motor, and the position is adjusted within the dewatering well pipe to facilitate measuring the water level in the dewatering well pipe.

[0075] Step S132: The measuring column moves along the axis of the precipitation well pipe to the water surface inside the precipitation well pipe, and the liquid level inside the precipitation well pipe is measured. A water pump is connected to the measuring column, and the water pump sucks the water inside the precipitation well pipe.

[0076] In addition, the measuring column measures the liquid level inside the precipitation well pipe and displays the liquid level signal on an electronic display screen. It also includes: sending a lifting instruction to the lifting motor through an automated precipitation monitoring system; the lifting motor operates according to the instruction and adjusts the position of the measuring column through a cable drive mechanism; the water pump adjusts along with the position adjustment of the measuring column and changes the elevation position of the water pump; the measuring column measures the liquid level inside the precipitation well pipe and displays the liquid level signal on an electronic display screen.

[0077] Step S140: Measure the water inflow based on the measuring column and trigger the operation mode of the automated precipitation monitoring system based on the water inflow. Among them, operation mode one of the automated precipitation monitoring system is applicable to the situation where the water inflow is relatively stable, and operation mode two of the automated precipitation monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large.

[0078] Specifically, it includes:

[0079] Step S141: Measure the water inflow based on the measuring column;

[0080] Step S142: Trigger the operation mode of the automated precipitation monitoring system according to the water inflow situation of the water inflow;

[0081] Step S143: If the water inflow is relatively stable, then trigger operation mode one of the automated precipitation monitoring system.

[0082] Step S144: If the water inflow is unstable and the water volume is large, then trigger operation mode two of the automated precipitation monitoring system.

[0083] Among them, in operation mode one of the automated precipitation monitoring system, a warning water level, a high water level, and a low water level are set; if the water level is higher than the set low water level, the water pump continues to pump water; if the water level is lower than the set low water level, the water pump stops pumping water.

[0084] If the water level is higher than the set high water level, turn on the water pump to pump water; if the water pump is successfully turned on, then continue to return to system self-check; if the water pump is not turned on, then alarm; or, if the water level exceeds the warning water level, then alarm.

[0085] If the water inflow is unstable and the water volume is large, then trigger operation mode two of the automated precipitation monitoring system; in operation mode two of the automated precipitation monitoring system, a warning water level, a high water level, and a low water level are set; if the water level is higher than the set low water level, the water pump is lowered by 0.1 m; if the water level is lower than the set low water level, the water pump is raised by 0.2 m.

[0086] If the water level is higher than the set high water level, the water pump is lowered by 1 m; if the water level is lower than the set low water level, the water pump continues to pump water.

[0087] Step S150: Obtain the hydraulic gradient of the site near the foundation pit, and determine the corresponding high water level, low water level, and warning water level to be set according to the hydraulic gradient.

[0088] Specifically, it includes:

[0089] Step S160: Input the high water level, low water level, and warning water level into the automatic precipitation monitoring system to trigger dynamic precipitation.

[0090] Among them, the hydraulic gradient i = △h / L, where △h is the difference in water level between the inside of the precipitation well and the water stop curtain on the inner side of the foundation pit, and L is the vertical distance from the center of the precipitation well to the water stop curtain of the foundation pit; the hydraulic gradient of the site near the foundation pit can be calculated based on the pumping test; according to the position of the on-site precipitation well and the designed water level of the precipitation elevation, calculate the high water level, low water level, and warning water level to be set in the automatic precipitation monitoring system; input the high water level, low water level, and warning water level into the automatic precipitation monitoring system to trigger dynamic precipitation.

[0091] This application provides a method for dynamically dewatering a foundation pit based on a precipitation well platform. The measuring column is connected to a lifting motor and a cable drive mechanism, and is telescopically inserted through the precipitation well pipe. The measuring column measures the liquid level inside the precipitation well pipe inside the precipitation well pipe and displays the liquid level signal on an electronic display screen; based on the measuring column, the water inflow is measured, and based on the water inflow, the operation mode of the automatic precipitation monitoring system is triggered, so as to trigger the operation mode of the automatic precipitation monitoring system according to different water inflows, ensuring the application of the automatic precipitation monitoring system in multiple scenarios, and inputting the high water level, low water level, and warning water level into the automatic precipitation monitoring system to trigger dynamic precipitation, so that the automatic precipitation monitoring system can adjust the precipitation amount according to the high water level, low water level, and warning water level, so as to complete the precipitation target at the fastest speed and timely adjust the water level elevation to prevent over-pumping, ensuring a state of dynamic balance.

[0092] Obviously, the embodiments described above are only a part of the embodiments of this application, rather than all of them. The preferred embodiments of this application are shown in the accompanying drawings, but they do not limit the patent scope of this application. This application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of this application more thorough and comprehensive. Although this application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure that makes use of the content of the specification and drawings of this application, directly or indirectly applied in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A method for dynamically dewatering a foundation pit based on a dewatering well platform, characterized in that, it includes: Welding the dewatering well platform to the dewatering well pipe. Among them, the dewatering well platform is provided with a lifting motor, a cable drive mechanism and a measuring column; Connecting the measuring column to the lifting motor and the cable drive mechanism, and telescopically passing through the dewatering well pipe; The measuring column measures the liquid level in the dewatering well pipe inside the dewatering well pipe, and displays the liquid level signal on an electronic display screen; Measuring the water inflow based on the measuring column, and triggering the operation mode of the automatic dewatering monitoring system based on the water inflow. Among them, the operation mode one of the automatic dewatering monitoring system is applicable to the situation where the water inflow is relatively stable, and the operation mode two of the automatic dewatering monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large; The operation mode two of the automatic dewatering monitoring system includes: If the water inflow is unstable and the water volume is large, then trigger the operation mode two of the automatic dewatering monitoring system; In the operation mode two of the automatic dewatering monitoring system, set the warning water level, high water level, and low water level; If the water level is higher than the set low water level, the water pump is lowered by 0.1 m; If the water level is lower than the set low water level, the water pump is raised by 0.2 m; If the water level is higher than the set high water level, the water pump is lowered by 1 m; If the water level is lower than the set high water level, the water pump continues to pump water; Obtaining the hydraulic gradient of the site near the foundation pit, and determining the corresponding high water level, low water level, and warning water level to be set according to the hydraulic gradient; Inputting the high water level, low water level, and warning water level into the automatic dewatering monitoring system to trigger dynamic dewatering.

2. The method for dynamically dewatering a foundation pit based on a dewatering well platform according to claim 1, characterized in that, The welding of the dewatering well platform to the dewatering well pipe, among which the dewatering well platform is provided with a lifting motor, a cable drive mechanism and a measuring column, includes: The dewatering well pipe is arranged vertically; The dewatering well platform is welded to the dewatering well pipe and is at the top of the dewatering well pipe; The dewatering well platform is provided with a lifting motor, a cable drive mechanism and a measuring column. The two ends of the cable drive mechanism are respectively connected to the lifting motor and the measuring column, and drive the measuring column to lift.

3. The method for dynamically dewatering a foundation pit based on a dewatering well platform according to claim 2, characterized in that, The measuring column measures the liquid level in the dewatering well pipe inside the dewatering well pipe, and displays the liquid level signal on an electronic display screen, including: The measuring column is lifted and lowered inside the dewatering well pipe driven by the cable drive mechanism; The measuring column moves along the axis of the dewatering well pipe to the water surface inside the dewatering well pipe, and measures the liquid level in the dewatering well pipe. Among them, the measuring column is connected with a water pump, and the water pump sucks the water in the dewatering well pipe.

4. The method for dynamically dewatering a foundation pit based on a dewatering well platform according to claim 3, characterized in that, The measuring column measures the liquid level in the dewatering well pipe inside the dewatering well pipe, and displays the liquid level signal on an electronic display screen, and further includes: Sending a lifting command to the lifting motor through the automatic dewatering monitoring system; The lifting motor works according to the command, and adjusts the position of the measuring column through the cable drive mechanism; The water pump adjusts along with the adjustment of the position of the measuring column, and changes the elevation position of the water pump. The measuring column measures the liquid level in the precipitation well pipe and displays the liquid level signal on the electronic display screen.

5. The method for dynamically dewatering a foundation pit based on a precipitation well platform according to claim 4, characterized in that the measuring column measures the water inflow, and triggers the operation mode of the automatic dewatering monitoring system based on the water inflow. Among them, the operation mode 1 of the automatic dewatering monitoring system is applicable to the situation where the water inflow is relatively stable, and the operation mode 2 of the automatic dewatering monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large, including: measuring the water inflow based on the measuring column; triggering the operation mode of the automatic dewatering monitoring system according to the water inflow situation of the water inflow; if the water inflow is relatively stable, then trigger the operation mode 1 of the automatic dewatering monitoring system; in the operation mode 1 of the automatic dewatering monitoring system, set the warning water level, high water level, and low water level; if the water level is higher than the set low water level, the water pump continues to pump water; if the water level is lower than the set low water level, the water pump stops pumping water.

6. The method for dynamically dewatering a foundation pit based on a precipitation well platform according to claim 5, characterized in that the measuring column measures the water inflow, and triggers the operation mode of the automatic dewatering monitoring system based on the water inflow. Among them, the operation mode 1 of the automatic dewatering monitoring system is applicable to the situation where the water inflow is relatively stable, and the operation mode 2 of the automatic dewatering monitoring system is applicable to the situation where the water inflow is unstable and the water volume is large. The operation mode 1 of the automatic dewatering monitoring system further includes: if the water level is higher than the set high water level, turn on the water pump to pump water; continue to return to system self-check after the water pump is successfully turned on; if the water pump is not turned on, then alarm; or, if the water level exceeds the warning water level, then alarm.

7. The method for dynamically dewatering a foundation pit based on a precipitation well platform according to claim 1, characterized in that inputting the high water level, low water level, and warning water level into the automatic dewatering monitoring system to trigger dynamic dewatering, including: hydraulic gradient i = △h / L, where △h is the difference in water level between the precipitation well and the water level at the inner side of the cut-off wall of the foundation pit, and L is the vertical distance from the center of the precipitation well to the cut-off wall of the foundation pit; the hydraulic gradient of the site near the foundation pit can be calculated according to the pumping test; calculate the high water level, low water level, and warning water level that need to be set in the automatic dewatering monitoring system according to the position of the on-site precipitation well and the designed water level of the precipitation elevation; input the high water level, low water level, and warning water level into the automatic dewatering monitoring system to trigger dynamic dewatering.

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