A test device for deep grouting of a concealed roadbed near a river

Abstract

The application provides a kind of test device for river bank concealed subgrade deep grouting, belongs to the technical field of subgrade grouting, including model component and detection component.Model component includes subgrade model, river model and mounting bracket, river model is fixed to subgrade model, mounting bracket is set to subgrade model and river model, and subgrade model is provided with grouting pipe, detection component includes fixing frame, pulp barrel, grout inlet pipe, grouting pump, grout outlet pipe, container, side plate and detector, fixing frame is fixed to mounting bracket, pulp barrel is detachably installed in fixing frame, one end of grout inlet pipe is communicated with pulp barrel, the other end of grout inlet pipe is communicated with grouting pump, grouting pump is fixed to mounting bracket, one end of grout outlet pipe is communicated with grouting pump, the other end of grout outlet pipe is communicated with container, container is fixed to mounting bracket, container is detachably installed in grouting pipe, side plate is sealed to subgrade model, and detector is fixed to side plate.The device can monitor the diffusion and distribution of slurry in time.

Description

Technical Field

[0001] This invention relates to the field of roadbed grouting technology, and more specifically, to a test device for deep grouting of concealed roadbeds near rivers. Background Technology

[0002] Grouting is a complex system engineering project. Its seepage process and grouting effect are the result of the combined effects of the grouting body, the grout, and the grouting technology. Current research on grouting seepage theory cannot fully reflect the physical characteristics of the grouting subgrade. Most studies are based on single fractures and Newtonian fluids, making it difficult to realistically reflect the grouting process in fractured rock masses. Therefore, simulated grouting laboratories are an essential tool for studying subgrade grouting.

[0003] However, due to the concealed nature of grouting projects, it is impossible to monitor the diffusion and distribution of grout, making it difficult to directly and effectively evaluate the grouting effect. As a result, existing grouting theories lag behind engineering applications. In particular, there is a lack of systematic research conclusions on the mechanism and application of grouting technology in road subgrade and base reinforcement, which makes it difficult to effectively guide construction. Summary of the Invention

[0004] To overcome the above shortcomings, the present invention provides a test device for deep grouting of concealed roadbeds along rivers, which aims to improve the problem of not being able to monitor the diffusion and distribution of grout.

[0005] The present invention is implemented as follows: The present invention provides a test device for deep grouting of concealed roadbeds along rivers, including a model component and a detection component.

[0006] The model components include a roadbed model, a river channel model, and a mounting frame. The river channel model is fixedly connected to the roadbed model, and the mounting frame is disposed between the roadbed model and the river channel model. The roadbed model is equipped with grouting pipes.

[0007] The detection assembly includes a mounting frame, a slurry tank, a slurry inlet pipe, a grouting pump, a slurry outlet pipe, a container, a side plate, and a detector. The mounting frame is fixedly connected to the side of the mounting frame away from the roadbed model and the riverbed model. The slurry tank is detachably mounted on the mounting frame. One end of the slurry inlet pipe is connected to the slurry tank, and the other end is connected to the grouting pump. The grouting pump is fixedly connected to the mounting frame. One end of the slurry outlet pipe is connected to the grouting pump, and the other end is connected to the container. The container is fixedly connected to the side of the mounting frame away from the mounting frame. The end of the container away from the slurry outlet pipe is detachably mounted to the grouting pipe. The side plate is sealed to the side of the roadbed model near the riverbed model, and the detector is fixedly connected to the side plate near the roadbed model.

[0008] In one embodiment of the present invention, a test assembly is further included. The test assembly includes a drive block, a drive rod, a positioning post, a first guide plate, a second guide plate, an elastic element, a telescopic rod, and a piston. The drive block is rotatably connected to the mounting frame. The drive rod passes through the mounting frame and is throttle-connected to the drive block. The positioning post is fixedly connected to the mounting frame. The first guide plate is fixedly connected to the drive rod and slidably connected to the positioning post. The second guide plate is slidably connected to the positioning post. The elastic element is sleeved on the positioning post, and both ends of the elastic element are fixedly connected to the first guide plate and the second guide plate, respectively. The telescopic rod is fixedly connected to the second guide plate. The piston is fixedly connected to the end of the telescopic rod away from the second guide plate. The piston is disposed inside the container.

[0009] In one embodiment of the present invention, a pressure gauge is provided at one end of the grouting pump near the grouting pipe.

[0010] In one embodiment of the present invention, the detector is a non-metallic ultrasonic detector.

[0011] In one embodiment of the present invention, the mounting frame is fixedly connected with a self-locking universal wheel, and both the roadbed model and the river model are provided with slides, and the self-locking universal wheel is rotatably connected to the slide.

[0012] In one embodiment of the present invention, multiple grouting pipes are provided and evenly distributed in the roadbed model.

[0013] In one embodiment of the present invention, a clearance groove is provided in the side plate, and the detector is fixedly connected in the clearance groove.

[0014] In one embodiment of the present invention, multiple detectors are provided and evenly distributed within the clearance slot.

[0015] In one embodiment of the invention, a protective plate is fixedly connected to the side of the side plate near the roadbed model, and the protective plate is configured to protect the detector.

[0016] In one embodiment of the present invention, the side plate is fixedly connected with a snap-fit ​​block, the roadbed model is provided with a snap-fit ​​groove, and the snap-fit ​​block snaps into the snap-fit ​​groove.

[0017] In one embodiment of the present invention, a sealing gasket is provided at the connection between the side plate and the roadbed model, and the sealing gasket is a rubber sealing gasket.

[0018] In one embodiment of the present invention, the driving block is fixedly connected to a rotating block, the mounting bracket is provided with a rotating groove, the rotating block is rotatably connected to the rotating groove, the elastic element can be any one of a helical spring, a gas spring and a rubber spring, the driving block is provided with an internal thread portion, the driving rod is provided with an external thread portion, the internal thread portion is adapted to the external thread portion, and a limit plate is fixedly connected to one end of the driving rod away from the first guide plate.

[0019] The beneficial effects of this invention are as follows: The experimental device for deep grouting of concealed roadbeds along rivers, obtained by the above design, involves fixing the roadbed model, the river model, and the mounting frame in place. Then, seawater or tap water is injected into the river model. The grouting pipe is then inserted into the roadbed model, and the side plate is installed on the roadbed model. Grout is then injected into the grouting tank, and the grouting pump is started. The grouting pump then begins operation, and the grout in the grouting tank is injected directly into the container through the inlet and outlet pipes. The grout is then injected into the grouting pipe through the container, allowing the grout to penetrate into the roadbed model and thus achieving the grouting operation. The flow, penetration, and compaction effect of the grout under the surface can be effectively monitored in real time by a detector.

[0020] This device can monitor the diffusion and distribution of grout in a timely manner, thereby enabling a direct and intuitive evaluation of the grouting effect, and thus allowing for effective guidance of construction through sound theoretical research. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall device structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the overall exploded structure provided for an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a portion of the detection component provided for an embodiment of the present invention;

[0025] Figure 4 A cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0026] Figure 5 A partial exploded structure diagram provided for an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the combined structure of the detection component and the test component provided in the embodiments of the present invention;

[0028] Figure 7 A schematic diagram of the exploded structure of the test component provided for an embodiment of the present invention.

[0029] In the diagram: 100-Model component; 110-Roadbed model; 111-Grouting pipe; 112-Snap-fit ​​groove; 120-River channel model; 121-Slide track; 130-Mounting frame; 131-Self-locking caster wheel; 132-Rotating groove; 200-Detection component; 210-Fixing frame; 220-Grouting tank; 230-Grouting inlet pipe; 240-Grouting pump; 241-Pressure gauge; 250-Grouting outlet pipe; 260-Container; 270-Side plate; 271-Avoidance groove; 272-Protective plate; 273-Snap-fit ​​block; 274-Sealing gasket; 280-Detector; 300-Test assembly; 310-Drive block; 311-Rotating block; 312-Internal thread part; 320-Drive rod; 321-External thread part; 342-Limiting plate; 330-Positioning post; 340-First guide plate; 350-Second guide plate; 360-Elastic element; 370-Telescopic rod; 380-Piston. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Example

[0038] Grouting is a complex system engineering project. Its seepage process and grouting effect are the result of the combined effects of the grouting body, the grout, and the grouting technology. Current research on grouting seepage theory cannot fully reflect the physical characteristics of the grouting subgrade. Most studies are based on single fractures and Newtonian fluids, making it difficult to realistically reflect the grouting process in fractured rock masses. Therefore, simulated grouting laboratories are an essential tool for studying subgrade grouting.

[0039] However, due to the concealed nature of grouting projects, it is impossible to monitor the diffusion and distribution of grout, making it difficult to directly and effectively evaluate the grouting effect. As a result, existing grouting theories lag behind engineering applications. In particular, there is a lack of systematic research conclusions on the mechanism and application of grouting technology in road subgrade and base reinforcement, which makes it difficult to effectively guide construction.

[0040] Please see Figure 1 The present invention provides a technical solution: a test device for deep grouting of concealed roadbeds along rivers, comprising a model component 100 and a detection component 200.

[0041] Please refer to Figure 1 The detection component 200 is installed on the model component 100. The model component 100 is mainly used to realistically simulate the field parameters of the roadbed grouting project and for installation purposes. The detection component 200 is mainly used to monitor the grout diffusion and distribution in real time, and to directly evaluate the grouting effect effectively and intuitively.

[0042] Please see Figure 1 and Figure 2 The model component 100 includes a roadbed model 110, a river channel model 120, and a mounting frame 130. The river channel model 120 is fixedly connected to the roadbed model 110. The mounting frame 130 is disposed between the roadbed model 110 and the river channel model 120. The roadbed model 110 is provided with grouting pipes 111, and multiple grouting pipes 111 are provided and evenly distributed on the roadbed model 110. The grouting pipes 111 can stably and quickly grout deep into the roadbed. The mounting frame 130 is fixedly connected with self-locking casters 131. Both the roadbed model 110 and the river channel model 120 are provided with slide rails 121. The self-locking casters 131 are rotatably connected to the slide rails 121. Through the cooperation of the self-locking casters 131 and the slide rails 121, after grouting of one grouting pipe 111, it can be quickly moved to allow grouting of the next grouting pipe 111.

[0043] Please see Figure 1 , Figure 2 and Figure 3The detection component 200 includes a fixed frame 210, a slurry tank 220, a slurry inlet pipe 230, a grouting pump 240, a slurry outlet pipe 250, a container 260, a side plate 270, and a detector 280. The fixed frame 210 is fixedly connected to the side of the mounting frame 130 away from the roadbed model 110 and the river model 120. The slurry tank 220 is detachably installed on the fixed frame 210. One end of the slurry inlet pipe 230 is connected to the slurry tank 220, and the other end of the slurry inlet pipe 230 is connected to the grouting pump 240. The grouting pump 240 is fixedly connected to the mounting frame 130. One end of the slurry outlet pipe 250 is connected to the grouting pump 240. A pressure gauge 241 is installed at the end of the grouting pump 240 near the grouting pipe 111. The pressure data during grouting can be clearly and intuitively observed through the pressure gauge 241. The pressure can be adjusted in a timely manner through the grouting pump 240, thereby controlling the grouting pressure so that the slurry can flow stably and evenly on the roadbed surface. 250mm discharge pipe (e.g.) Figure 4 The other end of the container (shown) is connected to the container 260. The container 260 is fixedly connected to the side of the mounting frame 130 away from the fixed frame 210. The end of the container 260 away from the grout outlet pipe 250 is detachably installed on the grouting pipe 111. The side plate 270 is sealed and connected to the side of the roadbed model 110 near the river channel model 120. The detector 280 is fixedly connected to the side plate 270 near the side of the roadbed model 110. The detector 280 is a non-metallic ultrasonic detector. The detector 280 is a non-metallic ultrasonic detection instrument that can perform non-destructive testing on the test model and can draw the grout distribution according to different time nodes.

[0044] Please see Figure 2 , Figure 3 and Figure 5 In some specific implementation schemes, a clearance groove 271 is provided in the side plate 270, and a detector 280 is fixedly connected in the clearance groove 271. Multiple detectors 280 are provided and evenly distributed within the clearance groove 271. By increasing the number of detectors 280, a measurement point structure diagram can be drawn, allowing for a direct visual assessment of the slurry's penetration deep into the roadbed. A protective plate 272 is fixedly connected to the side of the side plate 270 near the roadbed model 110. The protective plate 272 is designed to protect the detectors 280, preventing damage from the slurry flow. A snap-fit ​​block 273 is fixedly connected to the side plate 270. The roadbed model 110 has a snap-fit ​​groove 112, and the snap-fit ​​block 273 snaps into the snap-fit ​​groove 112. The snap-fit ​​groove 112 and snap-fit ​​block 273 allow the side plate 270 to be quickly installed on the roadbed model 110, thereby increasing testing efficiency. A sealing gasket 274 is provided at the connection between the side plate 270 and the roadbed model 110. The sealing gasket 274 is a rubber sealing gasket. The sealing gasket 274 can increase the sealing between the side plate 270 and the roadbed model 110 and prevent grout from seeping out from the side plate 270.

[0045] It should be noted that in order to accurately design the various parameters of pressure grouting, control the grouting quality, and effectively evaluate the grouting effect, indoor model tests are often required. However, existing indoor model tests make it difficult to precisely control the grouting volume and pressure, reproduce the on-site construction process of pressure grouting, and accurately obtain the influence of different grouting control parameters on the treatment effect of roadbed pressure grouting.

[0046] Please see Figure 1 , Figure 2 and Figure 4 To address the aforementioned problems, in one embodiment of the present invention, a test assembly 300 is further included. The test assembly 300 includes a drive block 310, a drive rod 320, a positioning post 330, a first guide plate 340, a second guide plate 350, an elastic element 360, a telescopic rod 370, and a piston 380. The drive block 310 is rotatably connected to the mounting frame 130. The drive rod 320 passes through the mounting frame 130 and is throttle-connected to the drive block 310. The positioning post 330 is fixedly connected to the mounting frame 130. The first guide plate 340 is fixedly connected to the drive rod 320 and slidably connected to the positioning post 330. The second guide plate 350... The slidable connection is to the positioning column 330. The elastic element 360 is sleeved on the positioning column 330, and the two ends of the elastic element 360 are respectively fixedly connected to the first guide plate 340 and the second guide plate 350. The telescopic rod 370 is fixedly connected to the second guide plate 350. The piston 380 is fixedly connected to the end of the telescopic rod 370 away from the second guide plate 350. The piston 380 is set inside the container 260. When the grouting pressure increases sharply during operation, the grout compresses the telescopic rod 370 through the piston 380, thereby compressing the elastic element 360, realizing the energy storage of the energy storage device and the energy dissipation and pressure reduction of the grout. When the grouting pressure decreases sharply, the compression spring releases the elastic potential energy, realizing the energy increase and pressure increase of the grout.

[0047] Please see Figure 6 and Figure 7In some specific implementations, the drive block 310 is fixedly connected to a rotating block 311, and the mounting frame 130 has a rotating groove 132. The rotating block 311 is rotatably connected to the rotating groove 132, which facilitates the movement of the drive block 310 and the drive rod 320 when the mounting frame 130 rotates. The elastic element 360 can be any of a helical spring, a gas spring, and a rubber spring, and a suitable spring is selected for installation and use based on the actual situation. The drive block 310 is provided with an internal thread portion 312, and the drive rod 320 is provided with an external thread portion 321. The internal thread portion 312 is adapted to the external thread portion 321, which facilitates the drive block 310 to drive the drive rod 320 to move, thereby adjusting the pressure of the spring on the grout during injection. A limit plate 342 is fixedly connected to the end of the drive rod 320 away from the first guide plate 340 to prevent the drive rod 320 from falling off the drive block 310 and thus avoid damage.

[0048] Specifically, the working principle of this test device for deep grouting of concealed roadbeds along the river is as follows: During use, the roadbed model 110, the riverbed model 120, and the mounting frame 130 are fixedly installed. Then, seawater or tap water is injected into the riverbed model 120. The water volume clearly shows the change in the surrounding water level during grouting of the roadbed in the riverside section. Next, a drilling rig is used to drill holes in the roadbed model 110. Then, the grouting pipe 111 is inserted into the deep hole of the roadbed model 110. Finally, the side plate 270 is installed on the roadbed model 110, and then... Grout is injected into the slurry tank 220, and then the grouting pump 240 is started. The grouting pump 240 then starts working, and the grout in the slurry tank 220 is directly injected into the container 260 through the grout inlet pipe 230 and the grout outlet pipe 250. Then, the grout is injected into the grouting pipe 111 through the container 260, so that the grout can penetrate into the roadbed model 110, thereby realizing the grouting project. Then, the flow, penetration and compaction effect of the grout under the surface of the roadbed model 110 can be effectively monitored in real time by the detector 280.

[0049] The pressure data during grouting can be clearly and intuitively observed through the pressure gauge 241. The pressure can then be adjusted in a timely manner through the grouting pump 240, thereby controlling the grouting pressure so that the grout can flow stably and evenly on the roadbed surface. The snap-fit ​​groove 112 and snap-fit ​​block 273 allow the side plate 270 to be quickly installed on the roadbed model 110, thereby increasing the test efficiency. With the cooperation of the self-locking caster wheel 131 and the slide rail 121, the grouting pipe 111 can be quickly moved after grouting to the next grouting pipe 111. The sealing gasket 274 can increase the sealing between the side plate 270 and the roadbed model 110, preventing the grout from seeping out from the side plate 270. The protective plate 272 can prevent the detector 280 from being damaged by the flow of grout.

[0050] To ensure precise control of grouting volume and pressure, and to obtain effective test data through the test assembly 300, during the grouting process, when the grouting pressure increases sharply, the grout in container 260 compresses the telescopic rod 370 through piston 380. The telescopic rod 370 then presses against the second guide plate 350, causing the second guide plate 350 to compress the elastic element 360, thus achieving energy storage and grout decompression. When the grouting pressure decreases sharply, the elastic element 360 is compressed to release elastic potential energy, achieving grout energy increase and pressure increase. Reference data is then obtained by using pressure gauge 241 and observing the grout volume in grouting tank 220. This structure can significantly suppress fluctuations in grouting pressure and grout flow, significantly reduce the dynamic destructive effect of pulse grouting pump 240 on the roadbed, and prevent excessive deformation of the roadbed during grouting, thus preventing instability and damage.

[0051] It should be noted that the specific models and specifications of the grouting pump 240, pressure gauge 241 and detector 280 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0052] The power supply and operating principle of the grouting pump 240, pressure gauge 241 and detector 280 are clear to those skilled in the art and will not be described in detail here.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A test device for deep grouting of concealed roadbeds along rivers, characterized in that, include Model component (100) includes a roadbed model (110), a river channel model (120) and a mounting frame (130). The river channel model (120) is fixedly connected to the roadbed model (110). The mounting frame (130) is disposed between the roadbed model (110) and the river channel model (120). The roadbed model (110) is provided with a grouting pipe (111). The detection assembly (200) includes a mounting frame (210), a slurry mixing tank (220), a slurry inlet pipe (230), a grouting pump (240), a slurry outlet pipe (250), a container (260), a side plate (270), and a detector (280). The mounting frame (210) is fixedly connected to the mounting frame (130) on the side away from the roadbed model (110) and the river channel model (120). The slurry mixing tank (220) is detachably installed on the mounting frame (210). One end of the slurry inlet pipe (230) is connected to the slurry mixing tank (220), and the other end of the slurry inlet pipe (230) is connected to the grouting pump (240). 240) is fixedly connected to the mounting frame (130), one end of the grout outlet pipe (250) is connected to the grouting pump (240), the other end of the grout outlet pipe (250) is connected to the container (260), the container (260) is fixedly connected to the side of the mounting frame (130) away from the fixed frame (210), the end of the container (260) away from the grout outlet pipe (250) is detachably installed on the grouting pipe (111), the side plate (270) is sealed and connected to the side of the roadbed model (110) near the river channel model (120), and the detector (280) is fixedly connected to the side plate (270) near the side of the roadbed model (110); The test assembly (300) includes a drive block (310), a drive rod (320), a positioning post (330), a first guide plate (340), a second guide plate (350), an elastic element (360), a telescopic rod (370), and a piston (380). The drive block (310) is rotatably connected to the mounting frame (130). The drive rod (320) passes through the mounting frame (130) and is throttle-connected to the drive block (310). The positioning post (330) is fixedly connected to the mounting frame (130). The first guide plate (340) is fixedly connected to the drive rod (380). 20), and the first guide plate (340) is slidably connected to the positioning post (330), the second guide plate (350) is slidably connected to the positioning post (330), the elastic element (360) is sleeved on the positioning post (330), and the two ends of the elastic element (360) are respectively fixedly connected to the first guide plate (340) and the second guide plate (350), the telescopic rod (370) is fixedly connected to the second guide plate (350), the piston (380) is fixedly connected to the end of the telescopic rod (370) away from the second guide plate (350), and the piston (380) is disposed inside the container (260).

2. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, A pressure gauge (241) is provided at one end of the grouting pump (240) near the grouting pipe (111).

3. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, The detector (280) is a non-metallic ultrasonic detector.

4. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, The mounting frame (130) is fixedly connected with a self-locking universal wheel (131). Both the roadbed model (110) and the river model (120) are provided with slides (121), and the self-locking universal wheel (131) is rotatably connected to the slide (121).

5. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, Multiple grouting pipes (111) are provided and evenly distributed in the roadbed model (110).

6. The test device for deep grouting of concealed roadbeds along rivers according to claim 1, characterized in that, The side plate (270) has an clearance groove (271) and the detector (280) is fixedly connected to the clearance groove (271).

7. The test device for deep grouting of concealed roadbed along a river as described in claim 6, characterized in that, The detectors (280) are provided in multiple and evenly distributed within the clearance slots (271).

8. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, A protective plate (272) is fixedly connected to the side of the side plate (270) near the roadbed model (110), and the protective plate (272) is configured to protect the detector (280).

9. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, The side plate (270) is fixedly connected to a snap-fit ​​block (273), and the roadbed model (110) has a snap-fit ​​groove (112), and the snap-fit ​​block (273) snaps into the snap-fit ​​groove (112).

10. The test device for deep grouting of concealed roadbed along a river as described in claim 1, characterized in that, A sealing gasket (274) is provided at the connection between the side plate (270) and the roadbed model (110), and the sealing gasket (274) is a rubber sealing gasket.

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