Method and device for detecting anti-seepage effect of underground continuous wall

Abstract

The invention belongs to the technical field of underground engineering construction, and discloses a method and device for detecting the anti-seepage effect of an underground continuous wall. The detection method combines a high-density electrical method, a pumping test and core sampling, and uses the apparent resistivity value obtained by the high-density electrical method to judge the water level changes at various locations before and after pumping in a survey area. In the judgment process, a three-dimensional geological model obtained by core sampling analysis is used to eliminate the influence of stratum heterogeneity on the apparent resistivity value, and the water level data in the pumping test process is used to further match the relationship between the apparent resistivity value and the water level, so as to draw a high-precision water level line diagram of the survey area, so as to analyze and obtain the anti-seepage effect of the underground continuous wall. The process test has strong controllability and accurate detection results.

Description

Technical Field

[0001] The invention relates to the technical field of underground engineering construction, and in particular to a method and a device for detecting the anti-seepage effect of an underground continuous wall. Background Art

[0002] In order to ensure the safe development of foundation pit projects, most foundation pit projects need to lay underground continuous walls before construction. The anti-seepage effect of underground continuous walls is the most important indicator for evaluating its quality, and it is also a factor that has an important impact on the construction of subsequent foundation pit projects. Most of the existing leakage channel detection methods currently use tracer tests or pumping tests, but the limitations of drilling in tracer tests and pumping tests make the detection results mostly scattered point estimates, which makes it difficult to accurately locate the specific location of the leakage point, and does not take into account the impact of stratum heterogeneity on the test results, and the measurement accuracy is not high. Summary of the invention

[0003] One of the purposes of the present invention is to provide a method for detecting the anti-seepage effect of an underground continuous wall, which can improve the accuracy of detecting the anti-seepage effect of an underground continuous wall.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The method for detecting the anti-seepage effect of underground continuous wall comprises the following steps:

[0006] Determine the scope of the survey area, wherein the survey area includes all areas within the underground continuous wall and areas surrounding the underground continuous wall;

[0007] Conducting core sampling and analysis on the survey area to draw a three-dimensional geological model;

[0008] Drilling a pumping hole in the center of the area enclosed by the underground continuous wall, and drilling a plurality of observation hole groups on both sides of the inner and outer sides of the underground continuous wall, wherein the observation hole groups include observation holes located inside the underground continuous wall and observation holes located outside the underground continuous wall;

[0009] Pumping water from the pumping hole, recording the water level changes in the pumping hole and the observation hole before and during the pumping process in real time, and simultaneously using a high-density electrical method to monitor the geoelectrical characteristics of the measurement area in real time during the pumping process, and calculating an apparent resistivity contour map;

[0010] Combining the three-dimensional geological model, the water levels of the pumping hole and the observation hole, and the apparent resistivity contour map, obtain a water level contour map of the survey area before pumping and a water level contour map of the survey area after pumping;

[0011] The water level contour map of the measuring area before pumping water and the water level contour map of the measuring area after pumping water are compared to judge the anti-seepage effect of the underground continuous wall.

[0012] Preferably, when judging the anti-seepage effect of the underground continuous wall, the water level difference inside and outside the underground continuous wall after pumping, the water level difference inside the underground continuous wall before and after pumping, and the water level difference outside the underground continuous wall before and after pumping are compared.

[0013] Preferably, the iso-water level line diagram of the measuring area after pumping refers to the iso-water level line diagram of the measuring area at any moment during the pumping process.

[0014] Preferably, core sampling is carried out at the locations where the pumping hole and the observation hole are drilled.

[0015] Preferably, a plurality of groups of observation holes are arranged at equal intervals around the underground continuous wall.

[0016] Preferably, the shape of the measuring area is the same as the enclosed shape of the underground continuous wall.

[0017] Another object of the present invention is to provide an underground continuous wall anti-seepage effect detection device, which is used in any of the above-mentioned underground continuous wall anti-seepage detection methods, including a communication-connected main control system, a high-density electrical measurement system and a pumping system, the high-density electrical measurement system is configured to obtain the conductivity of the measurement area before and during pumping, and the pumping system includes multiple water level probes and water pumps.

[0018] Preferably, the high-density electrical measurement system comprises a measurement host, an electrode system and an electrode converter, wherein the electrode converter controls the power supply and measurement state of each electrode in the electrode system, and the measurement host sends a working instruction to the electrode converter and receives and stores electrical signals.

[0019] Preferably, it further comprises a data transmitter, which is communicatively connected with the water level probe and can send the water level data collected by the water level probe to a terminal.

[0020] Preferably, it also includes a power supply, which adopts a 12V battery or a battery combination.

[0021] Beneficial effects of the present invention: The underground continuous wall anti-seepage effect detection method and device of the present invention combine high-density electrical method, pumping test and core sampling. High-density electrical method is used to judge the water level changes at various locations in the survey area before and after pumping. In the judgment process, the three-dimensional geological model obtained by core sampling analysis is used to eliminate the influence of stratum heterogeneity on the apparent resistivity value, and the water level changes during the pumping test are used to further match the relationship between the apparent resistivity value and the water level change, so as to draw a high-precision survey area equal water level line map, which can be used to analyze the anti-seepage effect of the underground continuous wall. The process test has strong controllability and accurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a flow chart of the anti-seepage effect detection of underground continuous wall in an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of high-density electrical method test in an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of a pumping test in an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Underground continuous wall; 2. Pumping hole; 3. Observation hole; 4. Electrode system; 5. Electrode converter; 6. Main control system; 7. Power supply; 8. Data transmitter; 9. Water level probe. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] refer to Figure 1-Figure 3 As shown, in an embodiment of the present invention, a method for detecting the anti-seepage effect of an underground continuous wall is provided, which mainly includes the following steps:

[0032] S1. Determine the scope of the measurement area, the measurement area is larger than the area enclosed by the underground continuous wall 1, and includes all areas within the underground continuous wall 1 and the area surrounding the underground continuous wall 1. Preferably, the shape of the measurement area is the same as the shape of the area enclosed by the underground continuous wall 1, except that the size of the measurement area is larger than the size of the area enclosed by the underground continuous wall 1. For example, when the underground continuous wall 1 is a square, the measurement area can be selected as a square area that is concentric with the underground continuous wall 1 and has a side length that is twice the side length of the square enclosed by the underground continuous wall 1.

[0033] S2. Conduct core sampling and analysis in the survey area to obtain information such as stratum lithology, stratum structure and geological structure in the survey area, and use this to draw a three-dimensional geological model.

[0034] S3. Drill a pumping hole 2 in the center of the area enclosed by the underground continuous wall 1, and drill observation holes on both the inside and outside of the underground continuous wall 1. There are multiple observation hole groups, and each observation hole group includes at least one observation hole 3 located inside the underground continuous wall 1 and one observation hole 3 located outside the underground continuous wall 1. The two observation holes 3 are respectively arranged close to the inside and outside of the underground continuous wall 1. Preferably, multiple observation hole groups are arranged around the underground continuous wall 1 at equal intervals. For example, Figure 2 As shown, when the underground continuous wall 1 is set to a rectangle, 4 observation hole groups are provided, and the 4 observation hole groups correspond to the four corners of the underground continuous wall 1 respectively. Each observation hole group includes two holes, an observation hole 3 located inside the underground continuous wall 1 and an observation hole 3 located outside the underground continuous wall 1, and a total of 9 holes are drilled together with the pumping hole 2.

[0035] S4. Pump water from the pumping hole 2, and record the changes in water level data in the pumping hole 2 and the observation hole 3 in real time during the pumping process; at the same time, use the high-density electrical method to monitor the conductivity of each part of the measuring area before and during the pumping process in real time, and calculate the apparent resistivity contour map.

[0036] S5. Combine the three-dimensional geological model, the water level data of the boreholes (including the pumping hole 2 and the observation hole 3) and the apparent resistivity contour map to comprehensively analyze the water level of the survey area, and draw the iso-water level map of the survey area. The iso-water level map of the survey area includes the iso-water level map of the survey area before pumping and the iso-water level map of the survey area after pumping. The specific steps are: first, according to the three-dimensional geological model, eliminate the influence of the formation heterogeneity on the apparent resistivity value (the factors affecting the apparent resistivity value include the formation lithology, formation structure, geological structure and water content of the survey area), obtain the mapping relationship between the apparent resistivity value and the water level of the survey area, and then obtain the iso-water level map of the survey area before pumping and the iso-water level map of the survey area after pumping according to the apparent resistivity contour map before and after pumping. In the process of obtaining the iso-water level map of the survey area, since the mapping relationship between apparent resistivity and water level in the survey area may be multi-solution, it is necessary to calibrate and verify the obtained water level in the survey area with the help of the accurate water levels at the locations of pumping hole 2 and observation hole 3, so as to obtain a highly accurate iso-water level map of the survey area.

[0037] Therefore, in step S2, sampling and analysis can be carried out directly at the positions of the pumping holes 2 and observation holes 3 predetermined in step S3, that is, the drilling sampling and the drilling of the pumping holes 2 and the observation holes 3 can be carried out simultaneously, which can not only improve the detection efficiency, but also improve the accuracy of the stratigraphic information corresponding to the pumping holes 2 and the observation holes 3 in the three-dimensional geological model.

[0038] S6. Compare the iso-water level line diagram of the measurement area before pumping and the iso-water level line diagram of the measurement area after pumping to determine whether there is a leakage point in the underground continuous wall 1 and determine the location of the leakage point according to the water level difference when there is a leakage point. The judgment logic is to replace the apparent resistivity with the water level for judgment. The judgment standard is that when the water level outside the underground continuous wall 1 does not change significantly before and after pumping, it means that the anti-seepage effect of the underground continuous wall 1 is good. However, when the anti-seepage effect of the underground continuous wall 1 is not good, the water level outside the underground continuous wall 1 may not change. For example, there is a strong permeable layer under the borehole, and the depth of the strong permeable layer is greater than the depth of the underground continuous wall 1, and pumping cannot affect the water level of the upper aquifer. Or if there is a water level difference inside and outside the underground continuous wall 1, even if the anti-seepage effect of the underground continuous wall 1 is good, the apparent resistivity value displayed by the outer part close to the underground continuous wall 1 will be affected by the change of the water level inside the underground continuous wall 1, that is, the change of the apparent resistivity outside the underground continuous wall 1 does not necessarily mean that the penetration effect of the underground continuous wall 1 is not good. Therefore, the above influence must be eliminated in combination with the iso-water level map of the survey area in the underground continuous wall 1. For example, after continuous pumping, although the water level outside the underground continuous wall 1 does not change much before and after pumping, the water level inside the underground continuous wall 1 does not change much either. This indicates that there is a strong permeable layer under the borehole, rather than the underground continuous wall 1 having a good anti-seepage effect; or the iso-water level map of the survey area after pumping shows that the water level of the outer part close to the underground continuous wall 1 has dropped (because the iso-water level map of the survey area is converted through the apparent resistivity contour map, it is essentially a change in the apparent resistivity value, which does not necessarily mean that the water level has changed). At this time, it is also necessary to refer to the change in the water level inside the underground continuous wall 1 to determine whether the change in the water level of the underground continuous wall 1 shown in the iso-water level map of the survey area after pumping is caused by the change in the apparent resistivity value of the outer part close to the underground continuous wall 1 caused by the change in the water level inside the underground continuous wall 1, rather than the change in the apparent resistivity value caused by the water level change caused by leakage.

[0039] In summary, when judging the anti-seepage effect of the underground continuous wall 1, it is necessary to consider the water level difference inside and outside the underground continuous wall 1 after pumping, as well as the water level difference inside the underground continuous wall 1 before and after pumping and the water level difference outside the underground continuous wall 1 before and after pumping. If the water level difference inside and outside the underground continuous wall 1 is large after pumping, and the water level inside the underground continuous wall 1 drops significantly, while the water level outside the underground continuous wall 1 hardly drops or drops less, it means that the anti-seepage effect of the underground continuous wall 1 is good. If the water level inside and outside a part of the underground continuous wall 1 drops significantly before and after pumping, it means that there is a leakage point in the area. If the water level inside and outside the entire area of ​​the underground continuous wall 1 drops significantly before and after pumping, it means that the anti-seepage effect of the entire underground continuous wall 1 is poor.

[0040] The underground continuous wall anti-seepage effect detection method of the present invention combines high-density electrical method, pumping test and core sampling analysis, which can eliminate the influence of stratum heterogeneity on the detection results, comprehensively observe and record the change of apparent resistivity of the measurement area during the pumping process, and draw a high-precision iso-water level map of the measurement area, and comprehensively analyze and derive the anti-seepage effect of the underground continuous wall 1. The process test is highly controllable and the detection results are accurate. It should be emphasized that the pumping hole 2 and the observation hole 3 can be used as a pumping well and an observation well during foundation pit dewatering, and the detection cost is low.

[0041] In the process of detecting the anti-seepage effect, it is necessary not only to detect the anti-seepage effect of the underground continuous wall 1 in different directions, but also to detect the anti-seepage effect of the underground continuous wall 1 in the depth direction. Therefore, the iso-water level map of the measuring area after pumping can be the iso-water level map of the measuring area converted from the apparent resistivity value at any time during the pumping process, and the iso-water level map of the measuring area at that time is compared with the iso-water level map of the measuring area before pumping, so as to judge the anti-seepage effect of the underground continuous wall 1 in the corresponding depth direction.

[0042] During the pumping process, attention should also be paid to the pumping intensity to avoid the water level from falling too fast or too slow. The pumping intensity should be adjusted in real time according to the speed of water level drop. The pumping intensity refers to the flow rate of water drawn out from the pumping hole 2 and the duration of the water level drop. Different pumping flow rates and pumping times will cause the water level in the measurement area to drop to different degrees, and the size of the drop funnel formed will also be different. Simply put, different pumping intensities will result in different water level drops.

[0043] refer to Figure 2 and Figure 3As shown, based on the above-mentioned underground continuous wall anti-seepage effect detection method, another embodiment of the present invention further proposes an underground continuous wall anti-seepage effect detection device, which is used in conjunction with a core sampling and analysis device. The core sampling and analysis device belongs to the prior art, including but not limited to core sampling drill tools and various analyzers for analyzing formation properties, such as a porosity detector. The detection device includes a main control system 6, a high-density electrical measurement system and a pumping system connected in communication, wherein the main control system 6 includes a computer with a data processing module, and the high-density electrical measurement system is used to monitor the conductivity of each part of the measurement area before and during the pumping process of the measurement area, including an electrode system 4, an electrode converter 5 and a measurement host. The electrode converter 5 controls the power supply and measurement state of each electrode in the electrode system 4 through a cable. The electrode converter 5 includes four terminals ABMN, wherein A and B are connected to the power supply electrode, M and N are connected to the measurement electrode, the electrodes connected to A and M move on the measurement line, and the electrodes connected to B and N are arranged at infinity. The measurement host sends a working instruction to the electrode converter 5, receives and stores the electrical signal generated by the electrode system, and the electrical signal is transmitted to the main control system 6. The data processing module in the main control system 6 processes the electrical signal to obtain an apparent resistivity value contour map. The pumping system includes a plurality of water level probes 9 and a water pump, and the water pump is used to extract water in the pumping hole 2. The pumping intensity can be adjusted by controlling the power of the water pump. The water level probe 9 can monitor the water level changes in the observation hole 3 and the pumping hole 2 in real time and transmit them to the main control system 6. The data processing module in the main control system 6 can also obtain the isowater level line map by combining the water level, apparent resistivity contour map and the three-dimensional geological model obtained by core sampling analysis.

[0044] Detecting the anti-seepage effect of the underground continuous wall 1 using the above-mentioned underground continuous wall anti-seepage effect detection device includes the following steps:

[0045] A1. Place multiple water level probes in the pumping hole 2 and observation hole 3 drilled in advance, and place the water pump in the pumping hole 2;

[0046] A2. The electrode system 4 is evenly arranged in the measuring area according to a certain arrangement mode. The electrodes of the electrode system 4 are connected by cables. Then the measuring host is turned on, and the A and M terminals of the electrode converter 5 are connected to the cables to control the operation of the electrodes.

[0047] In this step, the specific layout of the electrodes in the measurement area can be selected according to the shape of the measurement area. For example, when the underground continuous wall 1 is rectangular, the electrodes are arranged in a rectangular mesh or in a rectangular ring around the inside and outside of the underground continuous wall 1. When the foundation pit is circular, the electrodes are arranged in a circular mesh or in a circular ring around the inside and outside of the underground continuous wall 1. That is to say, the electrode array formed by the electrodes forms the same shape as the enclosure of the underground continuous wall 1. The total number of electrodes is adjusted according to the size of the measurement area, for example, the spacing between adjacent electrodes is between 3-5m. The depth of the electrode insertion into the rock and soil body in the measurement area is 2-3cm. It can be understood that the layout of the electrodes can be carried out before drilling, after drilling, or simultaneously with drilling.

[0048] The measurement host can customize the running mode. Taking full data collection as an example, assuming that there are electrodes 1-81, during the measurement process, electrodes 1-81 can be used as power supply electrodes in turn, and the remaining electrodes can be used as measurement electrodes for measurement. When electrode 1 completes the measurement as the power supply electrode, electrode 2 is switched to the power supply electrode until the last electrode 81 completes the measurement as the power supply electrode.

[0049] A3. Turn on the water pump to pump water, adjust the pumping intensity by controlling the power of the water pump, and during the pumping process, record the electrical signals (potential difference, measured current, etc.) and water level data in real time, and calculate the apparent resistivity value through the main control system 6.

[0050] The calculation formula of apparent resistivity is as follows:

[0051]

[0052] Among them, ρ s is the apparent resistivity, K is the electrode device coefficient, which is related to the arrangement of the electrodes, ΔV is the potential difference, and I is the measured current.

[0053] A4. The main control system 6 draws an apparent resistivity contour map based on the apparent resistivity values. Specifically, the apparent resistivity contour map can be a three-dimensional apparent resistivity contour map or a two-dimensional cross-sectional apparent resistivity contour map;

[0054] A5. The main control system 6 draws a water level contour map of the survey area by combining the apparent resistivity contour map and the three-dimensional geological model obtained by the previous core sampling analysis with the water level data.

[0055] Optionally, the underground continuous wall anti-seepage effect detection device in this embodiment also includes a power supply 7 and a data transmitter 8. The power supply 7 is connected to the main control system 6 through a power line, and can provide an adjustable DC voltage for the entire detection device. For example, a 12V battery or dry battery combination can be selected, or a 200V high-voltage battery combination used in conjunction with a step-down device can be selected. The data transmitter 8 can regularly send the water level data collected by the water level probe 9 to the terminal to achieve real-time continuous observation of the water level, so as to facilitate the operator to adjust the water pump power according to the speed of water level change. The terminal includes but is not limited to mobile terminals such as tablet computers and mobile phones.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for detecting the anti-seepage effect of underground continuous walls, characterized in that: The following steps are involved: Determining the scope of the survey area, the survey area including the entire area within the underground continuous wall (1) and the area surrounding the underground continuous wall (1); Conducting core sampling and analysis on the survey area to draw a three-dimensional geological model; Drilling a pumping hole (2) in the center of the area enclosed by the underground continuous wall (1), and drilling a plurality of observation hole groups on both the inner and outer sides of the underground continuous wall (1), the observation hole groups comprising an observation hole (3) located inside the underground continuous wall (1) and an observation hole (3) located outside the underground continuous wall (1); Pumping water from the pumping hole (2), recording in real time the changes in water levels in the pumping hole (2) and the observation hole (3) during the pumping process, and simultaneously using a high-density electrical method to monitor in real time the conductivity of each location in the measurement area before and during the pumping process, and calculating and obtaining an apparent resistivity contour map; Eliminating the influence of stratum heterogeneity on the apparent resistivity value according to the three-dimensional geological model, obtaining a mapping relationship between the apparent resistivity value and the water level in the survey area, and then obtaining a water level line map of the survey area before pumping and a water level line map of the survey area after pumping according to the apparent resistivity contour map before and after pumping, respectively; in the process of obtaining the water level line map of the survey area before pumping and the water level line map of the survey area after pumping, the obtained water level in the survey area is verified by using the accurate water levels at the positions of the pumping hole (2) and the observation hole (3); The water level contour diagram of the measured area before pumping and the water level contour diagram of the measured area after pumping are compared to judge the anti-seepage effect of the underground continuous wall (1).

2. The method for detecting the anti-seepage effect of underground continuous wall according to claim 1, characterized in that: When judging the anti-seepage effect of the underground continuous wall (1), the water level difference inside and outside the underground continuous wall (1) after pumping, the water level difference inside the underground continuous wall (1) before and after pumping, and the water level difference outside the underground continuous wall (1) before and after pumping are compared.

3. The method for detecting the anti-seepage effect of underground continuous wall according to claim 1, characterized in that: The water level contour diagram of the measuring area after pumping refers to the water level contour diagram of the measuring area at any time during the pumping process.

4. The method for detecting the anti-seepage effect of underground continuous wall according to claim 1, characterized in that: Core sampling is carried out at the locations where the pumping hole (2) and the observation hole (3) are drilled.

5. The method for detecting the anti-seepage effect of underground continuous wall according to claim 1, characterized in that: A plurality of groups of observation holes are arranged at equal intervals around the underground continuous wall (1).

6. The method for detecting the anti-seepage effect of underground continuous wall according to claim 1, characterized in that: The shape of the measuring area is the same as the enclosed shape of the underground continuous wall (1).

7. An underground continuous wall anti-seepage effect detection device, applied to the underground continuous wall anti-seepage detection method according to any one of claims 1 to 6, characterized in that: It comprises a main control system (6) connected in communication, a high-density electrical measurement system and a water pumping system, wherein the high-density electrical measurement system is configured to obtain the conductivity of each location in the measurement area before and during water pumping, and the water pumping system comprises a plurality of water level probes (9) and a water pump.

8. The underground continuous wall anti-seepage effect detection device according to claim 7, characterized in that: The high-density electrical measurement system comprises a measurement host, an electrode system (4) and an electrode converter (5); the electrode converter (5) controls the power supply and measurement state of each electrode in the electrode system (4); the measurement host sends a working instruction to the electrode converter (5) and receives and stores the electrical signal of the electrode system (4).

9. The underground continuous wall anti-seepage effect detection device according to claim 7, characterized in that: It also comprises a data transmitter (8), wherein the data transmitter (8) is communicatively connected to the water level probe (9) and is capable of sending water level data collected by the water level probe (9) to a terminal.

10. The underground continuous wall anti-seepage effect detection device according to claim 7, characterized in that: It also includes a power source (7), wherein the power source (7) adopts a 12V battery combination.

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