Device for detecting solidification state of underwater concrete of ultra-deep diaphragm wall

Abstract

The utility model discloses a detection device for the solidification state of underwater concrete of an ultra-deep diaphragm wall, and relates to the technical field of water conservancy infrastructure construction, the detection device comprises a control unit used for sending a control signal and collecting an acquisition signal, and further comprises a first detection mechanism used for detecting the solidification state of the concrete, the first detection mechanism comprises a detection head base which is embedded in the position, close to the bottom, of the pipe joint and is flush with the outer wall of the pipe joint, and a detection head used for abutting against concrete is slidably installed in the detection head base; according to the utility model, the solidification state of the concrete at the current position can be visually and accurately detected through the first detection mechanism, so that whether the current hardness and compressive strength reach the designed pipe drawing conditions or not is judged, and the problems of failure of an anti-seepage wall or pipe abandoning caused by clamping stagnation of a pipe joint due to too early or too late pipe drawing are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy infrastructure, in particular to the technical field of a device for determining the timing of pulling out a pipe joint during the construction of an ultra-deep anti-seepage wall, and specifically to a device for detecting the solidification state of underwater concrete in an ultra-deep anti-seepage wall. Background Art

[0002] Concrete cut-off walls are structures specifically designed to prevent water infiltration and are widely used in water conservancy projects, underground engineering projects, and environmental protection projects, particularly in reservoirs, dams, underground parking lots, and landfills. They are typically made of high-strength concrete combined with waterproofing agents and other anti-seepage materials to enhance their anti-seepage properties. The wall's thickness and height are precisely designed based on specific water pressure and soil conditions to ensure effective resistance to water flow. During construction, strict control of concrete quality and pouring techniques is crucial to prevent cracks and porosity, thereby ensuring long-term anti-seepage effectiveness. Furthermore, the durability and cost-effectiveness of concrete cut-off walls make them the preferred solution for many engineering projects. However, they also require regular maintenance and inspection to ensure their reliability and effectiveness during use. In short, concrete cut-off walls play an important role in protecting water resources and environmental safety.

[0003] The construction difficulty of ultra-deep anti-seepage walls is very different from that of anti-seepage walls in ordinary conventional infrastructure projects. This is mainly because ultra-deep anti-seepage walls have extremely high bottom pressure under the bottom layer, and it is necessary to solve problems such as collapse, water gushing, and large temperature differences. For the construction of ultra-deep anti-seepage walls, a segmented construction method is generally adopted, that is, segmented grooving is carried out and segmented pouring construction is carried out using pipe joints. Since concrete has different properties in different solidification states, it is necessary to pull out the pipe joints when the concrete is just solidified and can withstand the pressure from above. If the pipe joints are pulled out too early, the solidification strength and hardness of the concrete are not enough to support the stratum pressure. After the pipe joints are pulled out, the solidified concrete will be crushed, resulting in failure of the anti-seepage structure. If the pipe joints are pulled out too late, the concrete may be completely bonded to the pipe joints, making it impossible to pull out the pipe joints. Therefore, the timing and speed of pulling out the pipe joints have a huge impact on the construction quality of ultra-deep anti-seepage walls. In order to solve the problem that the pipe joints may be pulled out too early, causing the cut-off wall to crack under pressure, or the pipe joints may be unable to be pulled out too late, the solidification state of the cut-off wall concrete needs to be tested before pulling out the pipes to determine whether the conditions for pulling out the pipes are met. Utility Model Content

[0004] In order to solve the problem in the construction of concrete cut-off wall that premature extraction of pipe joints may cause the cut-off wall to crack under pressure or that late extraction may cause the pipe joints to be unable to be extracted, the utility model provides a detection device for the solidification state of underwater concrete of ultra-deep cut-off wall, which is used to detect the solidification state of the cut-off wall concrete, so that construction personnel can accurately grasp whether the solidification state of the concrete at the bottom of the current pipe joint reaches the extraction condition, so as to extract the pipe in time, and solve the problem that premature extraction of pipes may cause the collapse of the cut-off wall, and late extraction of pipes may cause the pipe joints to be stuck and unable to be extracted.

[0005] In order to achieve the above objectives, the technical solutions adopted in this application are:

[0006] A device for detecting the solidification state of underwater concrete in ultra-deep anti-seepage walls, comprising a control unit for issuing control signals and collecting acquisition signals, and a first detection mechanism for detecting the solidification state of the concrete. The first detection mechanism comprises a detection head base embedded in a pipe joint near the bottom and flush with the outer wall of the pipe joint, and a detection head slidably mounted within the detection head base for abutting against the concrete.

[0007] It also includes a first servo motor and a telescopic driver that are driven and connected, the output shaft of the telescopic driver is rotationally connected to the detection head and drives the detection head to reciprocate; the detection head is also drive-connected to the second servo motor through the rotation driver, the first servo motor and the second servo motor are electrically connected to the control unit, and a temperature sensor electrically connected to the control unit for collecting the real-time temperature of the pipe joint.

[0008] In order to prevent the detection head from being bonded to the concrete, preferably, the detection head and the output shaft are connected via a bearing or a universal ball joint. The bearing or universal ball joint can effectively transmit the rigid axial force while satisfying the mutual rotation between the detection head and the output shaft.

[0009] Preferably, a pressure sensor for collecting the axial pressure exerted on the detection head is further provided between the detection head and the output shaft, and the pressure sensor is electrically connected to the control unit.

[0010] In order to better solve the problem of anti-adhesion of the detection head, preferably, a large gear is fixed or coaxially connected to the detection head, and the second servo motor is directly or indirectly connected to the large gear through a small gear to form a reduction drive connection.

[0011] In order to check whether the solidification state of the concrete meets the requirements of pipe pulling after pipe pulling, preferably, a second detection mechanism is also included, which is installed at the bottom of the pipe joint to detect the surface shape of the concrete anti-seepage wall formed after pipe pulling.

[0012] To facilitate detection, the second detection mechanism includes a lifting drive fixedly arranged in the pipe joint, the output end of the lifting drive is connected to the lifting rod and drives the lifting rod to move up and down, the input end of the lifting drive is connected to the third servo motor, and the lower end of the lifting rod is provided with an ultrasonic probe for detecting the surface shape of the anti-seepage wall concrete.

[0013] In order to solve the problem of tube sticking during extraction, preferably, a vibration mechanism is further included, wherein the vibration mechanism includes a vibrator fixedly mounted on the pipe joint, and the vibrator is driven and connected to a drive motor.

[0014] Beneficial effects:

[0015] 1. The present invention can intuitively and accurately detect the solidification state of the concrete at the current location through the first detection mechanism, thereby judging whether the current hardness and compressive strength have reached the designed pipe pulling conditions, avoiding the situation where the pipe is pulled out too early, that is, the solidification hardness and compressive strength of the concrete are too low at the time of pipe pulling, resulting in cracking or collapse of the concrete anti-seepage wall body after pipe pulling; or the situation where the pipe is pulled out too late, that is, the solidification hardness and compressive strength of the concrete are too high at the time of pipe pulling, resulting in the joint pipe and concrete being firmly bonded together, and the pipe cannot be successfully pulled out within the calibrated tensile force or the maximum design tensile force range of the joint pipe, resulting in the joint pipe being unable to be pulled out and the pipe being abandoned. The real-time detection of the concrete solidification state by the first detection mechanism enables construction personnel to accurately control it, which is more accurate and objective than the existing empirical estimation method and time estimation method.

[0016] 2. The vibration mechanism of the utility model can provide strong, continuous, high-frequency vibration to the pipe joint in a targeted manner, which can effectively separate the pipe joint from the concrete. Even if the pipe joint is stuck, the problem of being unable to pull out the pipe can be avoided to a great extent.

[0017] 3. The present invention also provides a second detection mechanism below the pipe joint, which can detect in real time the shape of the side wall of the anti-seepage wall exposed after the pipe is pulled out. By repeated detection and comparison, it is determined whether the side wall of the anti-seepage wall has collapsed or broken, thereby further verifying whether the concrete solidification strength at the time of pipe pulling is up to standard, which serves as a reference standard for subsequent pipe pulling, so as to facilitate further verification or adjustment of the hardness value of the concrete at the time of pipe pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1It is the structural axonometric drawing of the vibration mechanism.

[0020] Figure 2 It is the structural axonometric drawing of the first detection mechanism.

[0021] Figure 3 It is a top view of the structure of the first detection mechanism.

[0022] Figure 4 It is the structural axonometric drawing of the second detection mechanism.

[0023] Figure 5 yes Figure 2 main view.

[0024] Figure 6 yes Figure 5 Section view with the centerline cut symbol AA.

[0025] Figure 7 The utility model is a schematic diagram of the detection state of underwater concrete solidification state of the anti-seepage wall and the installation structure.

[0026] In the figure: 1- pipe pulling machine; 2- pipe joint; 3- ground layer; 4- mud layer; 5- unset concrete layer; 6- set concrete layer; 7- filling chamber; 8- equipment chamber; 9- detection device;

[0027] 91-vibration mechanism; 911-drive motor; 912-vibrator; 92-first detection mechanism; 921-first servo motor; 922-telescopic drive; 923-output shaft; 924-pressure sensor; 925-universal joint; 926-detection head base; 9261-outer shell; 9262-sleeve; 9263-first sealed chamber; 9264-second sealed chamber; 927-rotation drive; 928-detection head; 9281-large gear; 929-second servo motor; 9291-small gear; 93-second detection mechanism; 931-lifting rod; 932-lifting drive; 933-third servo motor; 934-ultrasonic probe. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not necessarily imply that a component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0033] It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] Example 1:

[0035] This embodiment provides a device for detecting the solidification state of underwater concrete for ultra-deep anti-seepage walls. Figure 1-Figure 7As shown, it includes a control unit for sending control signals and collecting acquisition signals, and also includes a first detection mechanism 92 for detecting the solidification state of concrete. The first detection mechanism 92 includes a detection head base 926 embedded in the pipe joint 2 near the bottom and flush with the outer wall of the pipe joint 2. A detection head 928 for abutting against concrete is slidably installed in the detection head base 926;

[0036] It also includes a first servo motor 921 and a telescopic driver 922 that are drive-connected, and the output shaft 923 of the telescopic driver 922 is rotationally connected to the detection head 928 and drives the detection head 928 to reciprocate; the detection head 928 is also drive-connected to the second servo motor 929 through the rotation driver 927, and the first servo motor 921 and the second servo motor 929 are electrically connected to the control unit, as well as a temperature sensor electrically connected to the control unit for collecting the real-time temperature of the pipe joint 2.

[0037] Working principle:

[0038] Before introducing the detection device 9 provided in this embodiment, first, a brief introduction to the actual application scenario of the detection device 9 provided in this embodiment is given, so as to enable a clearer and deeper understanding of the technical problems solved by this embodiment and the differences from the prior art. Figure 7 As shown, during the construction of the ultra-deep anti-seepage wall, the pipe joints 2 are installed at both ends of the anti-seepage wall to be poured. Between the two pipe joints 2 is the anti-seepage wall trough filled with mud. During construction, concrete of a specified grade designed in advance by the design unit will be poured into the anti-seepage wall trough. When a certain amount of concrete is poured, a certain height of concrete will be deposited at the bottom of the anti-seepage wall trough and begin to solidify. Figure 7 As shown, the anti-seepage wall trough body comprises a solidified concrete layer 6, an unsolidified concrete layer 5 and a mud layer 4 from bottom to top. As the volume of concrete poured increases, the concrete deposited at the bottom of the anti-seepage wall trough body will become higher and higher. When the thickness of the solidified concrete layer 6 increases, it is necessary to promptly pull the pipe joint 2 upwards for a distance to avoid the problem that the pipe pulling machine 1 on the ground cannot effectively pull out the pipe joint 2 due to the excessive bonding area between the concrete and the pipe joint. Before pulling out the pipe, the solidified concrete layer 6 and the pipe joint 2 are bonded to each other. If the pipe is pulled out before the solidified concrete layer 6 reaches the calibrated solidification state, the concrete will not be sufficiently solidified after pulling out, causing the side wall of the anti-seepage wall to collapse or be fractured as a whole, thereby causing the anti-seepage wall to fail. On the contrary, if the pipe is pulled out after the solidified concrete layer 6 is excessively solidified, the pipe joint 2 will be completely bonded to the solidified concrete layer 6. If the pipe is pulled out at this time, the concrete bonding force on the bottom of the pipe joint 2 is too large and the pipe cannot be pulled out, resulting in the problem of having to abandon the pipe. In order to solve this industry problem in the prior art, this embodiment provides Figure 2-Figure 3 , Figure 5-Figure 6The detection device 9 shown includes a first detection mechanism 92, and the principle and process of detecting the setting state of concrete are as follows:

[0039] The time starts from the beginning of pouring concrete, and the initial setting time T is determined. The temperature t at the current depth of the stratum is collected by the temperature sensor. n The initial setting time T of the concrete is obtained by combining the grade of the concrete currently poured into the cut-off wall and the ground temperature. In the prior art, the initial setting time and the pipe pulling time are estimated based on the concrete grade. However, this method is prone to pipe pulling too early or too late. This is because the temperature environment of the concrete after pouring into the bottom layer, especially the ultra-deep bottom layer, is significantly different from the test environment at room temperature. Therefore, the traditional estimation of the initial setting time is not accurate. This embodiment uses a temperature sensor to collect the actual temperature of the current bottom layer of concrete in real time, thereby more accurately predicting the initial setting time T of the current concrete layer.

[0040] Note: The initial setting time T refers to the setting time of a certain grade of concrete, such as the setting time of concrete actually used for pouring anti-seepage walls under the design temperature environment. The design temperature is generally room temperature or 25°C. Although the grade of the poured concrete is determined by the design unit, its design initial setting time T0 is also determined. During actual testing and estimation, the actual initial setting time T needs to be determined based on the difference between the actual stratum temperature and the design setting temperature. For example, if the current bottom layer temperature is only 15°C, then it is necessary to extend the initial setting time T0 based on the design. The specific extension time is determined by the characteristics of the concrete currently used and the temperature difference. For example, if it is 50 minutes, then the current initial setting time T = T0 + 50min;

[0041] Then, the pressure value corresponding to the actual hardness H is detected. When the concrete reaches the initial setting time T, the pressure value corresponding to the current actual hardness H of the concrete is detected by the first detection mechanism 92 installed on the pipe joint 2, in units of MPa;

[0042] If the pressure value corresponding to the actual hardness H is less than or equal to the pressure value corresponding to the standard pull-out hardness H0, the test is repeated every 15 minutes until the pressure value corresponding to the actual hardness H is greater than or equal to the pressure value corresponding to the standard pull-out hardness H0. Of course, if there are multiple first testing mechanisms 92, the first testing mechanism 92 that has not been tested is used first for testing.

[0043] If the pressure value corresponding to the actual hardness H is greater than or equal to the pressure value corresponding to the standard pull-out hardness H0, the pull-out is performed. The pressure value corresponding to the standard pull-out hardness H0 is a standard pull-out hardness range calibrated by the design unit for different models of the pipe joint 2. Since different substrates have different environmental conditions, pulling out within the standard pull-out hardness range can ensure that the pipe joint 2 can be pulled out smoothly. At the same time, the solidification strength of the concrete can also withstand the pressure of the substrate, avoiding collapse, fracturing, etc.

[0044] The detection process of the first detection mechanism 92 is as follows:

[0045] See attached Figure 2-Figure 3 and Figure 6 As shown, when the initial setting time T is reached, a detection instruction is sent to the first servo motor 921 through the control unit. The first servo motor 921 drives the telescopic driver 922 to use the output shaft 923 to push out the detection head 928, and collects the current and voltage changes of the first servo motor 921 in real time during the ejection of the detection head 928, and records the number of rotations of the first servo motor 921. The torque change of the first servo motor 921 can be obtained through the change of current and voltage, thereby obtaining the resistance exerted on the detection head 928, that is, the actual axial pressure exerted on the detection head 928. The extension stroke of the detection head 928 can be calculated by comparing the number of rotations of the first servo motor 921 and the reduction ratio between the telescopic driver 922. By comparing with the designed extraction pressure value and the standard stroke, the hardness and compressive strength of the current concrete solidification state can be judged. Finally, through actual detection, it is determined whether the extraction conditions are met, thereby avoiding premature or late extraction. When the pressure value corresponding to the actual hardness H actually detected reaches the pressure value corresponding to the standard pull-out hardness H0, the pipe joint 2 can be pulled out. It is worth noting that the pressure value corresponding to the standard pull-out hardness H0 is determined by the engineering design unit. The standard stroke and pull-out pressure values are obtained by testing on a concrete sample using the first detection mechanism 92. The concrete sample is manufactured in accordance with the provisions of the design standard.

[0046] Due to this one-time detection, the detection head 928 may form a certain bonding force with the concrete. In order to accurately measure, as a preferred solution, before conducting the first detection, the detection head 928 is first driven to rotate by the second servo motor 929 and the rotation driver 927, so that the detection head 928 and the concrete are in a completely non-bonded state, thereby ensuring the accuracy of the detection results.

[0047] Example 2:

[0048] This embodiment is a further optimization and improvement based on the first embodiment, and simultaneously performs detection before extraction and verification after extraction, achieving a double insurance effect, as follows:

[0049] To prevent the detection head 928 from becoming integrally bonded to the concrete, the detection head 928 is connected to the output shaft 923 via a bearing or a universal ball joint 925. The bearing or universal ball joint 925 can effectively transmit rigid axial force while allowing for the mutual rotation between the detection head 928 and the output shaft 923. A pressure sensor 924 for collecting axial pressure applied to the detection head 928 is also provided between the detection head 928 and the output shaft 923. The pressure sensor 924 is electrically connected to the control unit. The addition of the pressure sensor 924 replaces the detection of current and voltage during the detection process of the first servo motor 921. The pressure can be directly collected through the pressure sensor 924 to obtain the hardness and compressive strength of the current concrete solidification state, thereby determining whether the conditions for extraction have been met.

[0050] To better address the problem of preventing the detection head 928 from sticking, in this embodiment, a large gear 9281 is fixed or coaxially connected to the detection head 928, and the second servo motor 929 is directly or indirectly connected to the large gear 9281 via a small gear 9291 to form a reduction drive connection. The reduction ratio can be set based on the contact area between the detection head 928 and the concrete. The larger the contact area, the stronger the adhesion, and the greater the torque required to drive the detection head 928. Therefore, under this premise, those skilled in the art should maximize the reduction ratio to achieve the purpose of increasing torque while ensuring that the second servo motor 929 meets the power requirements.

[0051] In existing cut-off wall construction, it is not possible to guarantee that the concrete of the cut-off wall will not collapse after the pipe joint 2 is pulled out. This is one of the reasons why collapse occurs in actual construction. For example, when the actual stratum humidity, water inflow is high, and the temperature is low, it may also affect the concrete curing process and cause unevenness inside and outside.

[0052] In order to check whether the solidification state of the concrete meets the requirements after the pipe is pulled out, this embodiment further includes a second detection mechanism 93 installed at the bottom of the pipe joint 2 for detecting the surface shape of the concrete anti-seepage wall formed after the pipe is pulled out.

[0053] To facilitate detection, the second detection mechanism 93 includes a lifting driver 932 fixedly arranged in the pipe joint 2, the output end of the lifting driver 932 is connected to the lifting rod 931 and drives the lifting rod 931 to move up and down, the input end of the lifting driver 932 is connected to the third servo motor 933, and the lower end of the lifting rod 931 is provided with an ultrasonic probe 934 for detecting the surface shape of the anti-seepage wall concrete.

[0054] In order to solve the problem of tube sticking during extraction, preferably, a vibration mechanism 91 is further included. The vibration mechanism 91 includes a vibrator 912 fixedly mounted on the pipe joint 2 , and the vibrator 912 is driven by a drive motor 911 .

[0055] Here's how it works:

[0056] In the prior art, after the pipe joint 2 is pulled out, it is unknown whether the solidified concrete anti-seepage wall is qualified, whether collapse and cracking occur, and it is impossible to understand the state of the anti-seepage wall after pulling out. In order to solve the hidden danger of whether there are defects in the anti-seepage wall after pulling out, this embodiment specially adds a second detection mechanism 93.

[0057] The pipe joint 2 is pulled out by the pipe pulling machine 1, with a pulling force F ≤ 70% Fmax. If the pipe can be pulled out normally, the initial pulling height h = 20cm-30cm; if the pipe cannot be pulled out normally, the vibration mechanism 91 installed inside the pipe joint 2 is activated and the pulling is repeated for 5 minutes until the pipe joint 2 is pulled out to a height of h = 20cm-30cm. The height of the initial pulling has a significant impact on the waterproof performance of the entire anti-seepage wall, because the conditions of the first initial pulling are not subsequently verified and may be uncertain. Excessive pulling height may cause the edge of the anti-seepage wall to collapse, and in extreme cases may even cause the entire anti-seepage wall to crack, resulting in anti-seepage failure.

[0058] In this embodiment, a lifting actuator 932 installed at the bottom of the pipe joint 2 drives a lifting rod 931 to move an ultrasonic probe 934 up and down. The ultrasonic probe 934 uses ultrasonic waves to detect whether the concrete side wall formed after the pipe is removed has collapsed.

[0059] If collapse does not occur, the concrete is pulled out at a constant speed (m / s) according to the pressure value corresponding to the actual pull-out hardness H and the pull-out speed v is determined according to the concrete pouring speed. The pull-out speed v is 90%-100% of the designed pouring speed.

[0060] If collapse occurs, the pressure value corresponding to the pull-out hardness H is dynamically adjusted. The specific adjustments are as follows:

[0061] If the maximum collapsed thickness L of the concrete side wall after pulling out is less than 1 cm, the pressure value corresponding to the pulling out hardness H is increased by 0.1 MPa;

[0062] If the maximum collapse thickness of the concrete side wall after extraction is 1cm<L<2cm, the pressure value corresponding to the extraction hardness H is increased by 0.2MPa;

[0063] If the maximum collapse thickness of the concrete side wall after extraction is 2cm<L, the pressure value corresponding to the extraction hardness H is increased by 0.3MPa;

[0064] Repeat the above operation until there is no collapse of the concrete side wall after pulling out.

[0065] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A device for detecting the solidification state of underwater concrete in ultra-deep anti-seepage walls, comprising a control unit for issuing control signals and collecting acquisition signals, characterized in that: The invention also includes a first detection mechanism (92) for detecting the solidification state of concrete, wherein the first detection mechanism (92) includes a detection head base (926) embedded in the pipe joint (2) near the bottom and flush with the outer wall of the pipe joint (2), and a detection head (928) for abutting against concrete is slidably mounted in the detection head base (926); The invention also includes a first servo motor (921) and a telescopic driver (922) connected in a driving manner, wherein an output shaft (923) of the telescopic driver (922) is rotationally connected to a detection head (928) and drives the detection head (928) to reciprocate; the detection head (928) is also drive-connected to a second servo motor (929) via a rotation driver (927); the first servo motor (921) and the second servo motor (929) are electrically connected to a control unit, and a temperature sensor electrically connected to the control unit for collecting the real-time temperature of the pipe joint (2).

2. The device for detecting the solidification state of underwater concrete of an ultra-deep cut-off wall according to claim 1, characterized in that: The detection head (928) is connected to the output shaft (923) via a bearing or a universal ball joint (925).

3. A device for detecting the solidification state of underwater concrete of an ultra-deep cut-off wall according to claim 1 or 2, characterized in that: A pressure sensor (924) for collecting axial pressure applied to the detection head (928) is also provided between the detection head (928) and the output shaft (923), and the pressure sensor (924) is electrically connected to the control unit.

4. The device for detecting the solidification state of underwater concrete of an ultra-deep anti-seepage wall according to claim 3, characterized in that: A large gear (9281) is fixed or coaxially connected to the detection head (928), and the second servo motor (929) is directly or indirectly connected to the large gear (9281) through a small gear (9291). A reduction drive connection is formed.

5. The device for detecting the solidification state of underwater concrete of an ultra-deep anti-seepage wall according to claim 1, characterized in that: It also includes a second detection mechanism (93) installed at the bottom of the pipe joint (2) for detecting the surface shape of the concrete anti-seepage wall formed after the pipe is removed.

6. The device for detecting the solidification state of underwater concrete of an ultra-deep cut-off wall according to claim 5, characterized in that: The second detection mechanism (93) includes a lifting driver (932) fixedly arranged in the pipe joint (2); the output end of the lifting driver (932) is drivingly connected to the lifting rod (931) and drives the lifting rod (931) to move up and down; the input end of the lifting driver (932) is drivingly connected to the third servo motor (933); and the lower end of the lifting rod (931) is provided with an ultrasonic probe (934) for detecting the surface shape of the anti-seepage wall concrete.

7. The device for detecting the solidification state of underwater concrete of an ultra-deep cut-off wall according to claim 1, characterized in that: It also includes a vibration mechanism (91), wherein the vibration mechanism (91) includes a vibrator (912) fixedly mounted on the pipe joint (2), and the vibrator (912) is driven by a drive motor (911).

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