A device and method for making a riprap and silt squeezing test model suitable for soft clay

Abstract

The invention relates to a device and method for making a riprap and silt squeezing test model suitable for soft clay, comprising a transparent box body, a frame body, a silt assembly, an identification block assembly and a sand line assembly, the frame body comprising an upper frame, moving wheels, an outer sleeve, an avoidance column and a trowel plate, moving wheels are arranged on both sides of the upper frame, the outer sleeve is in a U-shaped structure with an opening toward the side, and is vertically arranged on the upper frame, limiting grooves are arranged on both sides of the outer sleeve, limiting blocks are arranged on the side of the avoidance column, the avoidance column is matched and sleeved in the outer sleeve and can be locked; the trowel plate is fixed to the side of the outer sleeve, and its side can match and lean against the side of the avoidance column; the silt assembly comprises a driving shaft, a driving wheel, a silt bucket and a material dropping roller, the sand line assembly comprises a sand dropping pipe and a sand bucket, and the identification block assembly comprises an identification block bucket body. The invention is easy to use, improves the uniformity of the sand line and the placement posture of the identification block, improves the production efficiency of the silt squeezing model, and provides convenience for test personnel.

Description

Technical Field

[0001] The invention relates to the technical field of silt squeezing test, and in particular to a device and method for making a riprap silt squeezing test model suitable for soft clay. Background Art

[0002] During the silt squeezing process, due to the low bearing capacity of the silt, the crushed stones continue to sink, the burial depth increases, and then the side loads on both sides increase, and the bearing capacity of the foundation increases. When the bearing capacity of the foundation is equal to the weight of the riprap, a balanced state is reached. In actual engineering, determining the relationship between the sinking depth of the riprap and the height of the riprap is the core issue of squeezing design.

[0003] In order to study the flow characteristics of silt and the sinking depth of riprap during the silt squeezing experiment, the existing practice is to pour the silt into a box body and set the box body as a transparent structure to facilitate the observation of the flow of silt. In order to further visualize the flow characteristics of the silt side, a sand line and a marking block structure are set on the side of the silt. The side of the marking block has a cross-shaped mark. When the silt flows, the marking block will rotate accordingly. The flow direction of the fluid can be judged by observing the position of the marking block and the change of the cross-shaped mark. At the same time, the sand line is arranged in the silt in a horizontal direction. When the silt flows, the sand line will also move with it. By judging the shape of the sand line, the flow characteristics of the silt and the sinking condition of the riprap can be obtained.

[0004] However, the existing model experiments are generally manually operated. The size of the transparent box is generally 2mx0.3mx0.1m in width. Silt needs to be added into the transparent box manually, and then smoothed with a scraper. After smoothing, sand lines are sprinkled close to the inner wall, and finally the marking blocks are arranged on the sand lines at intervals. This process is laborious, especially in the arrangement of sand lines and marking blocks. The operation is difficult, the sand lines are unevenly arranged, the depths are different, and the placement of the marking blocks is not standard. The overall production is difficult and the work efficiency is low. Based on this, it is necessary to study a stone-throwing silt squeeze test model making device suitable for soft clay. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a device and an experimental method for making a riprap test model suitable for soft clay, which effectively solves the problems of difficulty in making existing test models and non-standard settings of sand lines and marking blocks.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a device for making a riprap and silt squeezing test model suitable for soft clay, comprising a transparent box body, a frame body, a silt assembly, an identification block assembly and a sand line assembly, base plates are arranged on both sides of the upper part of the transparent box body, the frame body comprises an upper frame, moving wheels, an outer sleeve, an avoidance column and a trowel plate, moving wheels are arranged on both sides of the upper frame, the outer sleeve is a U-shaped structure with an opening to the side, and is vertically arranged on the upper frame, limiting grooves are arranged on both sides of the outer sleeve, limiting blocks are arranged on the sides of the avoidance column, the avoidance column is matched and fitted in the outer sleeve, and can be locked; the trowel plate is fixed to the side of the outer sleeve, and its side can match and lean against the side of the avoidance column; the silt assembly The components include a driving shaft, a driving wheel, a sludge bucket and a blanking roller. The driving shaft is installed on the upper frame through the shaft seat and is fixedly connected to the center of the driving wheel. The driving wheel and the moving wheel can rotate synchronously on the base plate. A blanking roller is arranged at the blanking port of the sludge bucket, and the rotating shaft of the blanking roller is detachably fixedly connected to the driving shaft; the sand line assembly includes a sand falling pipe and a sand bucket. The sand falling pipe is vertically arranged on the inner side of the outer sleeve, the upper part of the sand falling pipe is connected to the sand bucket, and the lower part of the sand falling pipe is located at the bottom of the outer sleeve. The identification block assembly includes an identification block bucket body, which is arranged on the outer side of the outer sleeve. The identification block bucket body includes an enlarged section and a guide section. The enlarged section is located at the upper part, and the guide section is located at the lower part. The lowermost end of the guide section is higher than the trowel plate.

[0007] Furthermore, a docking groove is provided on the driving shaft, a pin hole is provided on the side of the docking groove, the rotating shaft of the blanking roller is matched and seated in the docking groove, and a fixing hole corresponding to the pin hole is provided, the fixing pin is sleeved in the fixing hole and is threadedly connected and locked with the pin hole.

[0008] Furthermore, a conical feed port is provided on the upper portion of the sand falling pipe, and the sand hopper is located on the feed port and is connected to the sand falling pipe.

[0009] Furthermore, the moving wheel and the driving wheel are staggered, the driving wheel is provided with a gear sleeve, a track and a rack are correspondingly provided on the base plate, the moving wheel is seated on the track, and the gear sleeve is adapted to mesh with the rack.

[0010] Furthermore, a marking pin is provided on the upper frame, and scale lines are provided on the substrate.

[0011] Furthermore, the outer sleeve is slidably mounted on the upper frame, and a top screw capable of locking the outer sleeve is arranged on the upper frame.

[0012] Furthermore, the blanking roller includes a central axis and partitions, the central axis is evenly distributed along the radial direction, a blanking port is provided at the bottom of the sludge bucket, the central axis is rotatably provided at the blanking port, and is transmission-connected to the outer driving shaft, an arc-shaped material plate is provided at the blanking port, and the partitions are matched and nested in the material plate.

[0013] Furthermore, the lower portion of the guide section is flush with the bottom of the outer sleeve.

[0014] A riprap silt squeezing test method suitable for soft clay, comprising the following steps;

[0015] Step 1: Measure an appropriate amount of sludge according to the capacity of the transparent box, and then add the sludge into the sludge bucket so that the upper edge of the sludge reaches the preset height of the transparent box;

[0016] Step 2: Apply lubricant on both sides of the transparent box body, and adjust the position of the outer sleeve on the upper frame so that the trowel plate is at the preset height;

[0017] Step three, connect the blanking roller shaft of the sludge bucket with the drive shaft combination, and then place the entire device on the base plate; at this time, the outer sleeve and the avoidance column are tightly attached to the two sides of the transparent box body.

[0018] Step 4: operate the upper frame to move the combined structure of the sludge bucket and the frame on the base plate, and when the driving wheel rotates, the blanking roller is driven to rotate, and the sludge is evenly discharged from the blanking port of the sludge bucket;

[0019] Step 5: When the sludge is completely discharged and reaches the preset height, remove the sludge bucket, and then pull the avoidance column upwards to make the avoidance column and the sludge surface have a corresponding avoidance height, and stabilize the avoidance column;

[0020] Step 6: Place the sand bucket on the sand drop tube, and then move the frame at a constant speed. During the movement, the sand is evenly distributed on the edge of the transparent box, thereby forming a sand line that can be clearly seen on the outside;

[0021] Step 7: After the sand line is arranged, remove the sand bucket and move the frame to a specific position;

[0022] Step eight, place the marking block on the expanded section of the marking block bucket, and use a thin rod to press the marking block into the guide section and drop it above the silt, then move the frame to the next location to place the next marking block.

[0023] Furthermore, the avoidance height is greater than or equal to the height of the identification block.

[0024] The beneficial effects of the present invention are as follows: in order to solve the problems that the model for squeezing silt test is laborious to make, and the thickness of sand lines and the position of marking blocks are not standard, the present invention provides a device for making a silt squeezing test model. Structurally, the present invention uses a frame as the main structure, and an outer sleeve that can be raised and lowered is arranged on the frame. An avoidance column that can be raised and lowered is arranged inside the outer sleeve. The height of the outer sleeve is adjusted for silt of the same depth so that the trowel plate on its side is at a corresponding height. The blanking roller is synchronously driven to rotate during rolling to achieve uniform material discharge. At the same time, the silt on the upper part is smoothed by the trowel plate. During operation, it is only necessary to add a certain amount of silt into the silt bucket or remove the silt according to actual conditions. There is no need for people to go deep into the box body for manual smoothing, which is convenient for the arrangement of silt.

[0025] When arranging the sand line, the present invention first lifts the avoidance column upward to form a gap on the edge side of the trowel plate and the transparent box body to avoid contact with the formed sand line when the frame moves back and forth. In the present invention, it is only necessary to install the sand bucket above the sand falling pipe, which falls naturally like an hourglass, and then use the moving frame to form a sand line structure. The whole process is simple to operate, and the sand line thickness is consistent and evenly arranged. Compared with the manual sand spreading method, it not only improves the construction efficiency, but also improves the uniformity of the sand line.

[0026] When arranging the marking blocks, the present invention utilizes the avoidance gap formed between the bottom of the avoidance column and the sludge. The bottom of the marking block bucket corresponds to the avoidance gap. Through the guidance of the marking block bucket, the marking block can be dropped on the upper part of the sludge in a specific posture. The placement position of the marking block is changed by moving the frame to ensure that the marking block is distributed in a specific position with a specific posture.

[0027] Therefore, the present invention has a novel structure. It utilizes the movement of the frame to drive the blanking rollers to evenly distribute the sludge, so that the sludge is evenly distributed in the transparent box, and is smoothed by a trowel. At the same time, the movement function of the frame is utilized to arrange the sand lines and marking blocks. It is easy to use, improves the uniformity of the sand lines and the placement of the marking blocks, improves the production efficiency of the sludge squeezing model, and provides convenience for the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of the invention;

[0029] Figure 2 for Figure 1 A front view of

[0030] Figure 3 It is a top view of another implementation state of the present invention;

[0031] Figure 4 A schematic diagram of adding sludge to the present invention;

[0032] Figure 5 It is a structural schematic diagram of the sludge bucket;

[0033] Figure 6 It is a schematic diagram of the structure of the blanking roller;

[0034] Figure 7 This is the completed construction picture of the transparent box;

[0035] Figure 8 It is a schematic diagram of the structure of the outer casing, avoidance column, marking block bucket and sand falling pipe;

[0036] Fig. 9 for Figure 8 A front view of

[0037] Fig.10 A three-dimensional image of a screed plate;

[0038] Fig.11 for Fig.10 Top view of the .

[0039] Figure numerals: 1 is a transparent box body, 2 is a base plate, 3 is an upper frame, 4 is an axle seat, 5 is a driving wheel, 51 is a rack, 6 is a moving wheel, 61 is a track, 7 is an outer sleeve, 8 is a avoidance column, 9 is a limit block, 10 is a scale line, 11 is an identification needle, 12 is a sludge bucket, 121 is a bucket body, 122 is a rotating shaft, 123 is a docking block, 124 is a fixing pin, 125 is a partition, 13 is a sand bucket, 14 is a sand line, 15 is an identification block, 16 is a grid line, 17 is a sludge layer, 18 is an identification block bucket body, 19 is a sand drop pipe, 20 is a top screw, and 21 is a screed plate. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0041] Embodiment 1, this embodiment aims to provide a device for making a riprap silt squeezing test model suitable for soft clay, which is mainly used for making a silt squeezing model. With regard to the existing production method, there are problems such as great difficulty in making the squeezing test model, and non-standard sand line thickness and identification block position. Based on this, this embodiment provides a device for making a silt squeezing test model.

[0042] like Figure 1-2 In the figure, a device for making a riprap silt squeezing test model suitable for soft clay is shown, comprising a transparent box body 1, a frame body, a silt assembly, a marking block assembly and a sand line assembly, such as Figure 7As shown in the figure, the transparent box body 1 is a transparent structure, which can be specifically made of transparent glass material, and grid lines 16 are distributed on the outside thereof to facilitate observation of the flow characteristics of the sludge. During implementation, the transparent box body is a square structure of 2mx0.3mx0.1m, and substrates 2 are arranged on both sides of the upper part of the transparent box body 1. In this embodiment, the substrate 1 is a flat plate structure, which is used to support the frame and support the riprap box during the test.

[0043] like Figure 1 As shown in FIG. 1 , the frame includes an upper frame 3, a moving wheel 6, an outer sleeve 7, an avoidance column 8 and a trowel plate 21, wherein the upper frame 3 is a square structure, and moving wheels 6 are arranged on both sides thereof, such as Figure 1 As shown in the figure, there are four moving wheels 6, which are respectively distributed at the four corners of the upper frame, so that the upper frame can move smoothly on the substrate 2.

[0044] like Figure 8-11 As shown in the figure, the outer sleeve 7 is in a U-shaped structure with its opening facing the side, and is vertically arranged on the upper frame 3. In this embodiment, the outer sleeve 7 is slidably mounted on the upper frame 3, and a top screw capable of locking the outer sleeve is arranged on the upper frame 3. In this structure, the outer sleeve 7 is in a U-shaped structure, and its purpose is to fit closely to the transparent box body 1. When the avoidance column 8 is mounted on the outer sleeve 7, the avoidance column can fit closely to the transparent box body, and the avoidance column can move up and down, thereby avoiding the gap on the side, providing space for applying sand lines and marking blocks, and at the same time, when moving, the avoidance column can fit closely to the transparent box body, and when the silt is leveled, the silt on the side can be fully leveled.

[0045] In order to achieve the lifting and lowering adjustment of the avoidance column, the present embodiment provides limit grooves on both sides of the outer sleeve 7, and limit blocks 9 on the sides of the avoidance column 8. The avoidance column 8 is matched and fitted in the outer sleeve 7 and can be locked by the top screw 20. The limit grooves and the limit blocks are used to create a limiting relationship between the avoidance column and the outer sleeve, while allowing the avoidance column to be lifted and lowered.

[0046] like Fig.10 As shown in the figure, the trowel plate 21 is fixed on the side of the outer sleeve 7, and its side can match and lean against the side of the avoidance column 8. In this embodiment, the avoidance column 8 is fixed to the lower part of the outer sleeve 7, and the trowel plate 21 extends inward to the lower end surface of the outer sleeve 7, and matches and leans against the side of the avoidance column. In this embodiment, when the avoidance column is used, it is flush with the trowel plate and acts as a trowel plate together.

[0047] The sludge assembly includes a drive shaft 52, a drive wheel 5, a sludge bucket 12 and a blanking roller. The drive shaft is installed on the upper frame 3 via the shaft seat 4 and is fixedly connected to the center of the drive wheel 5. The drive wheel 5 and the moving wheel 6 can rotate synchronously on the base plate 2. A blanking roller is provided at the blanking port of the sludge bucket 12. The rotating shaft 122 of the blanking roller is detachably fixedly connected to the drive shaft. Figure 4-5As shown in the figure, a docking groove is provided on the driving shaft, and a pin hole (threaded hole) is provided on the side of the docking groove. The rotating shaft 122 of the blanking roller is matched and seated in the docking groove through a docking block 123, and a fixing hole corresponding to the pin hole is provided. The fixing pin 124 is inserted into the fixing hole and is threadedly connected and locked with the pin hole.

[0048] In a further structure, the blanking roller includes a central shaft and a partition, and the partitions 125 are evenly distributed radially on the central shaft. A blanking port is arranged at the bottom of the sludge hopper, and the central shaft is rotatably arranged at the blanking port and is transmission-connected to the outer driving shaft. An arc-shaped material plate is arranged at the blanking port, and the partition is matched and nested in the material plate. When the central shaft rotates, the blanking area formed between the partitions 125 carries the sludge and is discharged from the blanking port.

[0049] The sand line assembly includes a sand falling pipe 19, which is vertically fixed on the inner side of the outer sleeve 7 (the corresponding identification block bucket is arranged on the outside for easy operation). The upper part of the sand falling pipe 19 is connected with the sand bucket 13, and the lower part is located at the bottom of the outer sleeve 7. A conical feed port is arranged on the upper part of the sand falling pipe 19, and the sand bucket 13 is located on the feed port and is connected with the sand falling pipe.

[0050] When arranging the sand line, the present invention first lifts the avoidance column upward to form a gap on the edge side of the trowel plate and the transparent box body to avoid contact with the formed sand line when the frame moves back and forth. In the present invention, it is only necessary to install the sand bucket above the sand falling pipe, which falls naturally like an hourglass, and then use the moving frame to form a sand line structure. The whole process is simple to operate, and the sand line thickness is consistent and evenly arranged. Compared with the manual sand spreading method, it not only improves the construction efficiency, but also improves the uniformity of the sand line.

[0051] The identification block assembly includes an identification block bucket 18, which is arranged on the outer side of the outer sleeve 7. The identification block bucket includes an enlarged section and a guide section, the enlarged section is located at the upper part, and the guide section is located at the lower part. The lower end of the guide section is higher than the trowel plate, and the lower part of the guide section is flush with the bottom of the outer sleeve.

[0052] When arranging the marking blocks, the present invention utilizes the avoidance gap formed between the bottom of the avoidance column and the sludge. The bottom of the marking block bucket corresponds to the avoidance gap. Through the guidance of the marking block bucket, the marking block can be dropped on the upper part of the sludge in a specific posture. The placement position of the marking block is changed by moving the frame to ensure that the marking block is distributed in a specific position with a specific posture.

[0053] In this embodiment, the test device is used to simulate the riprap silt squeezing experiment. Due to the foundation characteristics of soft clay, it is relatively soft and easily deformed. Horizontal sand lines are arranged in the silt to capture displacement, and marker blocks are used to capture angle changes. A transparent box is used to visualize the geological slip mode, and sand lines and marker blocks are arranged in the visualized field of view to simulate plane strain.

[0054] In the specific use of this embodiment, a riprap silt squeezing test method suitable for soft clay includes the following steps:

[0055] Step 1: measure an appropriate amount of sludge according to the capacity of the transparent box, and then add the sludge into the sludge bucket so that the sludge can fill the transparent box and its upper edge reaches a preset height;

[0056] Step 2: Apply lubricant in the transparent box to reduce the resistance of sludge sinking, and then adjust the position of the outer sleeve on the upper frame so that the trowel plate is at the preset height;

[0057] Step three, connect the blanking roller shaft of the sludge bucket with the drive shaft combination, and then place the entire device on the base plate; at this time, the outer sleeve and the avoidance column are tightly attached to the two sides of the transparent box body.

[0058] Step 4: operate the upper frame to move the combined structure of the sludge bucket and the frame on the base plate, and when the driving wheel rotates, the blanking roller is driven to rotate, and the sludge is evenly discharged from the blanking port of the sludge bucket;

[0059] Step 5: When the sludge is completely discharged and reaches the preset height, remove the sludge bucket, and then pull the avoidance column upwards so that the avoidance column and the sludge surface have a corresponding avoidance height, and stabilize the avoidance column, and the avoidance height is greater than or equal to the height of the marking block. The beneficial effects of the above technical solution are:

[0060] Step 6: Place the sand bucket on the sand drop tube, and then move the frame at a constant speed. During the movement, the sand is evenly distributed on the edge of the transparent box, thereby forming a sand line that can be clearly seen on the outside;

[0061] Step 7: After the sand line is arranged, remove the sand bucket and move the frame to a specific position;

[0062] Step eight, place the marking block on the expanded section of the marking block bucket, and use a thin rod to press the marking block into the guide section and drop it above the silt, then move the frame to the next location to place the next marking block.

[0063] Embodiment 2: This embodiment further illustrates the structure of the moving wheel.

[0064] In this embodiment, the moving wheel 6 and the driving wheel 5 are staggered, and the staggered arrangement can be as follows: Figure 3 As shown in the figure, the driving wheel 5 is inside and the moving wheel 6 is outside. A gear sleeve is arranged on the driving wheel 5. A track 61 and a rack 51 are arranged correspondingly on the base plate 2. The moving wheel 6 is seated on the track 61. The gear sleeve is adapted to mesh with the rack 51. At the same time, an identification needle 11 is arranged on the upper frame and a scale line 10 is arranged on the base plate.

[0065] This embodiment is provided with a marking needle and a scale line, which can facilitate setting the moving position of the frame, provide a reference for the placement construction of the marking block 15, and at the same time use the track and the rack to more efficiently rotate the driving wheel.

Claims

1. A device for making a riprap and silt squeezing test model suitable for soft clay, characterized in that: It includes a transparent box body, a frame body, a sludge assembly, a marking block assembly and a sand line assembly. Base plates are arranged on both sides of the upper part of the transparent box body. The frame body includes an upper frame, moving wheels, an outer sleeve, an avoidance column and a trowel. Moving wheels are arranged on both sides of the upper frame. The outer sleeve is a U-shaped structure with an opening to the side and is vertically arranged on the upper frame. Limiting grooves are arranged on both sides of the outer sleeve. Limiting blocks are arranged on the sides of the avoidance column. The avoidance column is matched and fitted in the outer sleeve and can be locked. The trowel is fixed to the side of the outer sleeve, and its side can match and lean against the side of the avoidance column. The sludge assembly includes a driving shaft, a driving wheel, a sludge bucket and a blanking roller. The driving shaft is installed on the upper frame through the shaft seat and is fixedly connected to the center of the driving wheel. The driving wheel and the moving wheel can rotate synchronously on the base plate. A blanking roller is provided at the blanking port of the sludge bucket, and the rotating shaft of the blanking roller is detachably fixedly connected to the driving shaft; the sand line assembly includes a sand falling pipe and a sand bucket. The sand falling pipe is vertically arranged on the inner side of the outer sleeve, the upper part of the sand falling pipe is connected to the sand bucket, and the lower part of the sand falling pipe is located at the bottom of the outer sleeve. The identification block assembly includes an identification block bucket body, and the identification block bucket body is arranged on the outer side of the outer sleeve. The identification block bucket body includes an enlarged section and a guide section. The enlarged section is located at the upper part, and the guide section is located at the lower part. The lowermost end of the guide section is higher than the trowel plate.

2. The device for making a model for riprap and silt squeezing test suitable for soft clay according to claim 1, characterized in that: The driving shaft is provided with a docking groove, and a pin hole is provided on the side of the docking groove. The rotating shaft of the blanking roller is matched and seated in the docking groove and is provided with a fixing hole corresponding to the pin hole. A fixing pin is sleeved in the fixing hole and the pin hole.

3. The device for making a model for riprap and silt squeezing test suitable for soft clay according to claim 1, characterized in that: A conical feed port is arranged on the upper part of the sand falling pipe, and the sand bucket is located on the feed port and is communicated with the sand falling pipe.

4. The device for making a riprap and silt squeezing test model suitable for soft clay according to claim 1, characterized in that: The moving wheel and the driving wheel are staggered, a gear sleeve is arranged on the driving wheel, a track and a rack are correspondingly arranged on the base plate, the moving wheel is seated on the track, and the gear sleeve is adapted to mesh with the rack.

5. The device for making a model for riprap and silt squeezing test suitable for soft clay according to claim 4, characterized in that: The upper frame is provided with a marking needle, and the base plate is provided with a scale line.

6. The device for making a model for riprap and silt squeezing test suitable for soft clay according to claim 1, characterized in that: The outer sleeve is slidably sleeved on the upper frame, and a top screw capable of locking the outer sleeve is arranged on the upper frame.

7. The device for making a model for riprap and silt squeezing test suitable for soft clay according to claim 1, characterized in that: The blanking roller includes a central axis and a partition, the central axis is evenly distributed with partitions along the radial direction, a blanking port is arranged at the bottom of the sludge bucket, the central axis is rotatably arranged at the blanking port and is transmission-connected to the outer driving shaft, an arc-shaped material plate is arranged at the blanking port, and the partition is matched and nested in the material plate.

8. The device for making a model for a riprap and silt-squeezing test suitable for soft clay according to any one of claims 1 to 7, characterized in that: The lower portion of the guide section is flush with the bottom of the outer sleeve.

9. A method for making a riprap and silt-squeezing test model suitable for soft clay, using the riprap and silt-squeezing test model making device suitable for soft clay as claimed in claim 2, characterized in that: The method comprises the following steps: Step 1: Measure an appropriate amount of sludge according to the capacity of the transparent box, and then add the sludge into the sludge bucket so that the upper edge of the sludge reaches the preset height of the transparent box; Step 2: Apply lubricant on both sides of the transparent box body, and adjust the position of the outer sleeve on the upper frame so that the trowel plate is at the preset height; Step 3: Connect the rotating shaft of the blanking roller of the sludge bucket to the driving shaft, and then place the entire device on the base plate; at this time, the outer sleeve and the avoidance column are closely attached to the two sides of the transparent box body; Step 4: operate the upper frame to move the combined structure of the sludge bucket and the frame on the base plate, and when the driving wheel rotates, the blanking roller is driven to rotate, and the sludge is evenly discharged from the blanking port of the sludge bucket; Step 5: When the sludge is completely discharged and reaches the preset height, remove the sludge bucket, and then pull the avoidance column upwards to make the avoidance column and the sludge surface have a corresponding avoidance height, and stabilize the avoidance column; Step 6: Place the sand bucket on the sand drop tube, and then move the frame at a constant speed. During the movement, the sand is evenly distributed on the edge of the transparent box, thereby forming a sand line that can be clearly seen on the outside; Step 7: After the sand line is arranged, remove the sand bucket and move the frame to a specific position; Step eight, place the marking block on the expanded section of the marking block bucket, and use a thin rod to press the marking block into the guide section and drop it above the silt, then move the frame to the next location to place the next marking block.

10. The device for making a model for riprap and silt squeezing test suitable for soft clay according to claim 9, characterized in that: The avoidance height is greater than or equal to the height of the marking block.

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