Anti-floating water level value system and method considering the barrier effect of underground structures

Abstract

The present invention belongs to the field of geotechnical engineering and provides a system and method for obtaining water level values for anti-floating defenses that take into account the barrier effect of underground structures. The system and method comprise obtaining the water level heights of any two pre-set exploration holes, the distance between the two exploration holes, and groundwater flow direction parameters of a proposed underground structure site; determining the hydraulic gradient based on the water level heights of any two exploration holes and the distance between the two exploration holes, using the angle between the groundwater flow direction and the normal direction of the underground structure direction; determining the groundwater level elevation due to the barrier effect of the underground structure based on the hydraulic gradient and the influence radius of the aquifer; and determining the recommended groundwater anti-floating defense water level that takes into account the barrier effect of the underground structure based on the groundwater level elevation and the recommended anti-floating water level value obtained based on historical long-term observed water level and rainfall data.

Description

Technical Field

[0001] The present invention belongs to the technical field of geotechnical engineering, and in particular relates to a system and method for obtaining water level of an anti-floating defense device taking into account the barrier effect of an underground structure. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In recent years, with the development of the economy and society, a large number of underground space projects have been built. The existence of underground engineering structures has blocked the original runoff channels of the groundwater seepage field, causing changes in groundwater seepage conditions, leading to an increase in groundwater levels on the upstream side, which has had an adverse impact on underground engineering structures.

[0004] Environmental issues caused by changes in groundwater seepage conditions caused by underground space projects are becoming increasingly prominent. Researchers investigating the causes of rising groundwater levels and the changing characteristics of hydrogeological conditions around a residential complex in a certain area have shown that human activities have significantly altered the hydrogeological conditions surrounding the complex, transforming the area from a runoff discharge zone into a small "water storage area." This has led to a significant rise in groundwater levels around the complex and adversely affected structures.

[0005] The existing method for determining the site anti-floating defense water level based on Mann-Kendall trend analysis solves the problem that some current domestic projects directly use the historical highest water level as the site anti-floating defense water level, thereby overestimating the water pressure at the base of the building and causing waste.

[0006] In summary, while changes in groundwater seepage and groundwater levels caused by the barrier effects of underground structures are currently receiving significant attention from project builders, there remains no effective solution for determining the groundwater anti-floating protection level when considering the barrier effects of underground structures. Therefore, determining the "groundwater anti-floating protection level that takes into account the barrier effects of underground structures" during the survey phase has become a major engineering challenge that demands urgent resolution. Summary of the Invention

[0007] In order to solve the above problems, the present invention proposes a system and method for obtaining anti-floating defense water level that takes into account the barrier effect of underground structures. The present invention can quickly obtain the groundwater anti-floating defense water level that takes into account the barrier effect of underground structures through parameters such as groundwater level, hydraulic gradient, and influence radius obtained during the survey.

[0008] According to some embodiments, a first solution of the present invention provides a method for determining the water level of an anti-floating device taking into account the barrier effect of underground structures, using the following technical solutions:

[0009] The method for determining the anti-floating water level considering the barrier effect of underground structures includes:

[0010] Obtain the water level height, distance between two exploration holes and groundwater flow direction parameters of any two exploration holes preset in advance at the proposed underground structure site;

[0011] Based on the water level height of any two exploration holes and the distance between the two exploration holes, the hydraulic gradient in the normal direction of the underground structure is determined by using the angle between the groundwater flow direction and the normal direction of the underground structure;

[0012] Based on the hydraulic gradient and the aquifer influence radius, determine the groundwater level elevation caused by underground structure barriers;

[0013] According to the groundwater level rise and the recommended anti-floating water level value based on historical long-term observation water level and rainfall data, the recommended groundwater anti-floating defense water level value taking into account the barrier effect of underground structures is determined.

[0014] Furthermore, when the groundwater flow direction is perpendicular to the underground structure direction, the hydraulic gradient calculation formula is calculated according to the following formula:

[0015]

[0016] Where: h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the exploration period (m); L0 is the distance between the two exploration holes (m).

[0017] Furthermore, when the groundwater flow direction forms an angle α with the normal line of the underground structure, the hydraulic gradient is calculated as follows:

[0018]

[0019] Where: h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the survey (m); L0 is the distance between the two exploration holes (m); α is the angle between the groundwater flow direction and the normal direction of the underground structure.

[0020] Furthermore, the hydraulic gradient is also determined by drawing a groundwater flow field map, specifically:

[0021] Draw a groundwater flow field map based on the location coordinates, elevation difference, water level, flow velocity and direction of multiple exploration holes;

[0022] The groundwater hydraulic gradient perpendicular to the underground structure direction is determined by the groundwater flow field diagram and is determined according to the following formula:

[0023]

[0024] ΔH is the total head loss upstream and downstream; L is the streamline length; α is the angle between the groundwater flow direction and the normal direction of the underground structure.

[0025] Furthermore, the calculation formula for the groundwater level rise is:

[0026]

[0027] Where R is the influence radius of the aquifer; h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the survey period (m / s); L0 is the distance between the two exploration holes (m / s); J is the hydraulic gradient; Δh is the groundwater level elevation due to the obstruction of underground structures (m / s); and K is the safety factor for heavy rain.

[0028] Furthermore, the aquifer influence radius is determined through a pumping test.

[0029] Furthermore, the recommended groundwater anti-floating water level considering the barrier effect of underground structures is as follows:

[0030] H f =H o +Δh

[0031] Where: H f The recommended value of groundwater anti-floating water level considering the barrier effect of underground structures / m; H o is the recommended value of anti-floating water level based on long-term historical observation of water level and rainfall data (m2); Δh is the groundwater level elevation value caused by underground structure obstruction (m2).

[0032] According to some embodiments, the second solution of the present invention provides an anti-floating water level value system that takes into account the barrier effect of underground structures, using the following technical solutions:

[0033] The anti-floating water level value system considering the barrier effect of underground structures includes:

[0034] The data acquisition module is configured to obtain the water level height of any two pre-set exploration holes of the underground structure, the distance between the two exploration holes, and the groundwater flow direction parameters;

[0035] A hydraulic gradient determination module is configured to determine the hydraulic gradient in the normal direction of the underground structure based on the water level height of any two exploration holes and the distance between the two exploration holes and the angle between the groundwater flow direction and the underground structure direction;

[0036] A groundwater level elevation determination module is configured to determine groundwater level elevation due to underground structure obstruction based on hydraulic gradient and aquifer influence radius;

[0037] The anti-floating defense water level value determination module is configured to determine the recommended groundwater anti-floating defense water level value taking into account the barrier effect of underground structures based on the groundwater level rise and the recommended anti-floating water level value obtained based on historical long-term observed water level and rainfall data.

[0038] According to some embodiments, a third aspect of the present invention provides a computer-readable storage medium.

[0039] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for obtaining water level of anti-floating protection considering the barrier effect of underground structure as described in the first aspect above.

[0040] According to some embodiments, a fourth aspect of the present invention provides a computer device.

[0041] A computer device includes a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the program, the steps in the method for obtaining water level of anti-floating protection considering the barrier effect of underground structure as described in the first aspect above are implemented.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. The present invention can quickly determine the groundwater level on the water-facing surface during the survey phase based on the groundwater level and other parameters obtained from the survey, and based on this, determine the groundwater anti-floating water level taking into account the barrier effect of the underground structure.

[0044] 2. The present invention can predict the impact of the rising groundwater level caused by the groundwater barrier effect of underground engineering construction on the engineering structure before engineering construction.

[0045] 3. The present invention has clear principles, convenient operation, and a high degree of informatization. It does not require complex means such as numerical simulation, making it convenient for engineering construction personnel to quickly evaluate the anti-floating water level. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0047] Figure 1 This is a flow chart of a method for obtaining water level of anti-floating protection considering the barrier effect of underground structures according to an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram of diving motion between two exploration points according to an embodiment of the present invention;

[0049] Figure 3 This is a position relationship diagram when the groundwater flow direction is perpendicular to the direction of the underground structure according to an embodiment of the present invention;

[0050] Figure 4 This is a position relationship diagram when the groundwater flow direction and the normal line of the underground structure direction form an angle α according to an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0052] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] In the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0055] Example 1

[0056] like Figure 1 As shown, this embodiment provides a method for taking anti-floating water level values taking into account the barrier effect of underground structures. This embodiment uses the method applied to a server as an example. It can be understood that the method can also be applied to terminals, and can also be applied to systems including terminals, servers, and implemented through the interaction between terminals and servers. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network servers, cloud communications, middleware services, domain name services, security services CDN, and big data and artificial intelligence platforms. The terminal can be a smart phone, tablet computer, laptop computer, desktop computer, smart speaker, smart watch, etc., but is not limited to this. The terminal and the server can be directly or indirectly connected by wired or wireless communication, which is not limited in this application. In this embodiment, the method includes the following steps:

[0057] The method for determining the anti-floating water level considering the barrier effect of underground structures includes:

[0058] Obtain the water level height, distance between two exploration holes and groundwater flow direction parameters of any two exploration holes preset in advance at the proposed underground structure site;

[0059] Based on the water level height of any two exploration holes and the distance between the two exploration holes, the hydraulic gradient in the normal direction of the underground structure is determined by using the angle between the groundwater flow direction and the normal direction of the underground structure;

[0060] Based on the hydraulic gradient and the aquifer influence radius, determine the groundwater level elevation caused by underground structure barriers;

[0061] According to the groundwater level rise and the recommended anti-floating water level value based on historical long-term observation water level and rainfall data, the recommended groundwater anti-floating defense water level value taking into account the barrier effect of underground structures is determined.

[0062] Specifically, if Figure 2 As shown, stratum conditions and survey results are simulated, and several exploration holes are pre-arranged, including at least two exploration holes, exploration hole A and exploration hole B. The distance between exploration holes A and B is L0. The groundwater flow between the two holes meets the condition of flowing from observation hole A to observation hole B, and is phreatic flow. The aquiclude is homogeneous and unidirectional, the bottom aquiclude is horizontal, and the groundwater flow characteristics conform to the Qiubuyi hypothesis.

[0063] In actual work, the probability that the exploration hole is located exactly in the direction of groundwater flow is low. Therefore, multiple exploration holes can be set up, and the coordinate position, elevation, water level and other information of each exploration hole can be recorded. The groundwater flow network map can be drawn based on the data of each exploration hole.

[0064] Specifically, the method for determining the anti-floating water level considering the barrier effect of underground structures includes two methods when implementing it, as follows:

[0065] Method 1:

[0066] 1. Assume that two exploration holes are arranged along the direction of groundwater flow - exploration hole A and exploration hole B. The water level height measured in exploration hole A is h1, and the water level height measured in exploration hole B is h2. The distance L0 between the two holes is calculated based on the coordinates of exploration holes A and B.

[0067] 2. Measure groundwater flow velocity, direction and other parameters.

[0068] 3. If Figure 3 As shown, when the groundwater flow direction is perpendicular to the underground structure, the hydraulic gradient is calculated according to the following formula:

[0069]

[0070] like Figure 4 As shown, when the groundwater flow direction forms an angle α with the normal line of the underground structure, the hydraulic gradient can be calculated as follows:

[0071]

[0072] 4. Determine the aquifer influence radius R based on pumping tests or experience.

[0073] 5. Determine the recommended anti-floating water level value H based on historical long-term observation water level and rainfall data o .

[0074] 6. To determine the height of the groundwater level, if there is no relevant experience, the following formula can be used for calculation:

[0075]

[0076] 7. Determine the groundwater anti-floating water level considering the barrier effect of underground structures according to the following formula:

[0077] H f =H o +Δh (4)

[0078] Where: H f The recommended value of groundwater anti-floating defense level considering the barrier effect of underground structures / m;

[0079] H o is the recommended value of anti-floating water level based on historical long-term observed water level and rainfall data (m);

[0080] Δh is the groundwater level increase due to the obstruction of underground structures (m).

[0081] Method 2:

[0082] 1. Construct several exploration holes and collect parameters such as coordinates, elevation, water level, flow velocity, and flow direction;

[0083] 2. Draw a groundwater flow network map;

[0084] 3. Determine the groundwater hydraulic gradient perpendicular to the underground structure through the groundwater flow field diagram. Specifically, it can be determined according to the following formula:

[0085]

[0086] ΔH is the total head loss upstream and downstream;

[0087] L is the streamline length;

[0088] α is the angle between the groundwater flow direction and the normal direction of the underground structure.

[0089] 4. Determine the aquifer influence radius R based on pumping tests or experience.

[0090] 5. Determine the recommended anti-floating water level value H based on historical long-term observation water level and rainfall data o .

[0091] 6. To determine the height of the groundwater level, if there is no relevant experience, the following formula can be used for calculation:

[0092]

[0093] 7. Determine the groundwater anti-floating water level considering the barrier effect of underground structures according to the following formula:

[0094] H f =H o +Δh

[0095] Where: H f The recommended value of groundwater anti-floating defense level considering the barrier effect of underground structures / m;

[0096] H o is the recommended value of anti-floating water level based on historical long-term observed water level and rainfall data (m);

[0097] Δh is the groundwater level increase due to the obstruction of underground structures (m).

[0098] Example 2

[0099] This embodiment provides a water level determination system for anti-floating protection that takes into account the barrier effect of underground structures, including:

[0100] The data acquisition module is configured to obtain the water level height of any two pre-set exploration holes of the underground structure, the distance between the two exploration holes, and the groundwater flow direction parameters;

[0101] A hydraulic gradient determination module is configured to determine the hydraulic gradient in the normal direction of the underground structure based on the water level height of any two exploration holes and the distance between the two exploration holes and the angle between the groundwater flow direction and the underground structure direction;

[0102] A groundwater level elevation determination module is configured to determine groundwater level elevation due to underground structure obstruction based on hydraulic gradient and aquifer influence radius;

[0103] The anti-floating defense water level value determination module is configured to determine the recommended groundwater anti-floating defense water level value taking into account the barrier effect of underground structures based on the groundwater level rise and the recommended anti-floating water level value obtained based on historical long-term observed water level and rainfall data.

[0104] The examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the contents disclosed in the above embodiment 1. It should be noted that the above modules as part of the system can be executed in a computer system such as a set of computer executable instructions.

[0105] The descriptions of the various embodiments in the above embodiments have different focuses. For parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] The proposed system can be implemented in other ways. For example, the system embodiment described above is merely illustrative. For example, the above module division is only a logical function division. In actual implementation, other division methods may be used. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not implemented.

[0107] Example 3

[0108] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of the method for determining the water level of anti-floating protection considering the barrier effect of underground structures as described in the first embodiment above are implemented.

[0109] Example 4

[0110] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the method for obtaining water level values for anti-floating devices taking into account the barrier effect of underground structures as described in the first embodiment above are implemented.

[0111] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage) containing computer-usable program code.

[0112] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0113] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0114] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0115] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium, and when executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0116] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. The method for determining the water level of anti-floating defense considering the barrier effect of underground structures is characterized by: include: Obtain the water level height, distance between two exploration holes and groundwater flow direction parameters of any two exploration holes preset in advance at the proposed underground structure site; Based on the water level height of any two exploration holes and the distance between the two exploration holes, the hydraulic gradient in the normal direction of the underground structure is determined by using the angle between the groundwater flow direction and the normal direction of the underground structure; Based on the hydraulic gradient and the aquifer influence radius, determine the groundwater level elevation caused by underground structure barriers; Based on the groundwater level rise and the recommended anti-floating water level value obtained based on historical long-term observation water level and rainfall data, determine the recommended groundwater anti-floating defense water level value taking into account the barrier effect of underground structures; The calculation formula for the groundwater level rise is: Where R is the influence radius of the aquifer; h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the survey, in meters; L0 is the distance between the two exploration holes, in meters; J is the hydraulic gradient; Δh is the groundwater level elevation caused by the obstruction of underground structures, in meters; K is the safety factor for the impact of heavy rain; and α is the angle between the groundwater flow direction and the normal direction of the underground structure.

2. The method for determining the water level of anti-floating protection considering the barrier effect of underground structures according to claim 1, characterized in that: When the groundwater flow direction is perpendicular to the underground structure, the hydraulic gradient is calculated according to the following formula: Where: h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the exploration period, in meters; L0 is the distance between the two exploration holes, in meters.

3. The method for obtaining water level of anti-floating protection considering the barrier effect of underground structure according to claim 1 is characterized in that: When the groundwater flow direction forms an angle α with the normal line of the underground structure, the hydraulic gradient is calculated as follows: Where: h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the survey, in meters; L0 is the distance between the two exploration holes, in meters; α is the angle between the groundwater flow direction and the normal direction of the underground structure.

4. The method for obtaining water level of anti-floating protection considering the barrier effect of underground structure according to claim 1, characterized in that: The hydraulic gradient is also determined by mapping the groundwater flow field, specifically: Draw a groundwater flow field map based on the location coordinates, elevation difference, water level, flow velocity and direction of multiple exploration holes; The groundwater hydraulic gradient perpendicular to the underground structure direction is determined by the groundwater flow field diagram and is determined according to the following formula: ΔH is the total head loss upstream and downstream; L is the streamline length; α is the angle between the groundwater flow direction and the normal direction of the underground structure.

5. The method for obtaining water level of anti-floating protection considering the barrier effect of underground structure according to claim 1 is characterized in that: The aquifer influence radius is determined by pumping tests.

6. The method for determining water level of anti-floating protection considering the barrier effect of underground structures according to claim 1, characterized in that: The recommended groundwater anti-floating water level considering the barrier effect of underground structures is as follows: H f =H o +Δh Where: H f The recommended value of groundwater anti-floating water level considering the barrier effect of underground structures, m; H o is the recommended value of anti-floating water level based on historical long-term observed water level and rainfall data, m; Δh is the groundwater level elevation value caused by underground structure obstruction, m. 7.Anti-floating water level value system considering the barrier effect of underground structure, characterized by: include: The data acquisition module is configured to obtain the water level height of any two pre-set exploration holes of the underground structure, the distance between the two exploration holes, and the groundwater flow direction parameters; A hydraulic gradient determination module is configured to determine the hydraulic gradient in the normal direction of the underground structure based on the water level height of any two exploration holes and the distance between the two exploration holes and the angle between the groundwater flow direction and the underground structure direction; A groundwater level elevation determination module is configured to determine groundwater level elevation due to underground structure obstruction based on hydraulic gradient and aquifer influence radius; an anti-floating defense level value determination module configured to determine a recommended groundwater anti-floating defense level value taking into account the barrier effect of underground structures based on the groundwater level rise and the recommended anti-floating water level value obtained based on historical long-term observed water level and rainfall data; The calculation formula for the groundwater level rise is: Where R is the influence radius of the aquifer; h1 and h2 are the groundwater levels in any two exploration holes in the direction of water flow during the survey, in meters; L0 is the distance between the two exploration holes, in meters; J is the hydraulic gradient; Δh is the groundwater level elevation caused by the obstruction of underground structures, in meters; K is the safety factor for the impact of heavy rain; and α is the angle between the groundwater flow direction and the normal direction of the underground structure.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method for obtaining water level of anti-floating protection considering the barrier effect of underground structure as described in any one of claims 1 to 6 are implemented.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps in the method for obtaining water level of anti-floating protection considering the barrier effect of underground structure as described in any one of claims 1 to 6 are implemented.

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