Simulation test device for dewatering effect of geotextile tube bag

Abstract

The utility model discloses a simulation test device for the dewatering effect of a geotextile tube bag, and belongs to the field of dewatering of high-water-content slurry. The technical problem that in the prior art, the dewatering effect of the high-water-content slurry is poor due to the fact that the matching performance between the high-water-content slurry and an adopted geotextile tube bag is poor is solved. The simulation test device comprises an external communication unit, a high-water-content slurry dehydration unit, a connection unit and a bearing unit, the external communication unit is arranged above the high-water-content slurry dehydration unit, and the external communication unit and the high-water-content slurry dehydration unit are detachably connected, and geotechnical cloth is arranged between the two; the connecting unit sleeves the periphery of the high-water-content slurry dewatering unit and is coaxially arranged with the high-water-content slurry dewatering unit; and the bearing unit is arranged below the connecting unit and the high-water-content slurry dewatering unit. The simulation test device can simulate the dehydration effect of the combination of different types of geotechnical cloth and various types of high-water-content mud, so that the types of geotechnical cloth matched with various types of high-water-content mud can be accurately identified.

Description

Technical Field

[0001] The utility model relates to the technical field of high-water content mud dehydration and consolidation, in particular to a simulation test device for the dehydration effect of a geotube bag. Background Art

[0002] Geotubes are large tubular inclusions made of high-strength geotextiles with good permeability, and their diameter can be changed as needed. In 1967, Aldek AS of Denmark and the Danish Institute of Water Resources cooperated in research and achieved success. They mainly filled the bag with concrete or cement mortar, and after it solidified, it formed a plate-like protective body for dam construction. With the development of geosynthetics technology, geotubes have been used in many industries or projects such as embankment cofferdams and river dredging, and have shown many advantages such as high construction efficiency, simple operation, flexible solutions and low cost. However, in actual engineering applications, when choosing geotubes for different types of high-water content muds, most of them choose the type of geotubes based on experience. In view of the fact that a certain type of geotube has shown significant advantages in dehydration effect in previous engineering projects, in subsequent projects, even in the face of high-water content muds of different properties, they still tend to use the previous type of geotubes, which is unscientific.

[0003] In actual engineering projects, high-water-content mud will produce high-water-content mud with greatly different properties due to different dredging locations, different dredging depths, and different ecological dredging ships. This is mainly manifested in different particle size gradings, different water contents, and different organic matter contents, all of which will have a great impact on the dehydration effect. Therefore, from a scientific and rigorous perspective, it is difficult to use a universal geotube type to adapt to all types of high-water-content mud and achieve the effect of rapid dehydration. The physical and chemical properties, particle distribution, water content, organic matter content and other factors of high-water-content mud have a significant impact on the dehydration effect. Therefore, when selecting geotubes, it is necessary to accurately match and scientifically evaluate the specific characteristics of high-water-content mud, and conduct specific analysis of specific projects to ensure that the geotubes can perform at their best in actual engineering applications and achieve an efficient and safe dehydration process. Utility Model Content

[0004] In view of the above analysis, the utility model aims to provide a simulation test device for the dehydration effect of geotube bags, so as to solve the technical problem in the prior art that the matching of the geotube bags selected when dehydrating high-water-content mud is not good, resulting in poor dehydration effect of high-water-content mud.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] The utility model provides a simulation test device for the dehydration effect of geotextile tube bags. The simulation test device includes an external connection unit, a high water content mud dehydration unit, a connection unit, and a bearing unit;

[0007] The external connection unit is arranged above the high water content mud dehydration unit and is detachably connected therebetween. A geotextile is provided between the external connection unit and the high water content mud dehydration unit. The high water content mud enters the high water content mud dehydration unit through the external connection unit. The connection unit is of a hollow structure and is sleeved around the high water content mud dehydration unit and is coaxially arranged therewith. The connection unit is used to support the high water content mud dehydration unit. The bearing unit is arranged below the connection unit and the high water content mud dehydration unit, and the bearing unit is used to support and fix the connection unit.

[0008] In a possible design, the external connection unit includes a cylindrical feed pipe and a first fixing flange;

[0009] The first fixing flange is arranged at the bottom end of the cylindrical feed pipe and is integrally formed therewith. The first fixing flange is used to connect with the high water content mud dehydration unit.

[0010] In a possible design, the high water content mud dehydration unit includes a second fixing flange and a filtrate conveying pipe;

[0011] The second fixing flange is arranged at the top end of the filtrate conveying pipe. The second fixing flange is correspondingly arranged with the first fixing flange. The external connection unit and the high water content mud dehydration unit are detachably connected through the first fixing flange and the second fixing flange.

[0012] In a possible design, the filtrate conveying pipe includes a first cylindrical section conveying pipe, a conical funnel section conveying pipe, and a second cylindrical section conveying pipe with gradually decreasing inner diameters;

[0013] The top end of the first cylindrical section conveying pipe is fixedly connected with the second fixing flange, and its bottom end is fixedly connected with the conical funnel section conveying pipe. The bottom of the conical funnel section conveying pipe is connected with the second cylindrical section conveying pipe.

[0014] In a possible design, the connection unit includes, from top to bottom, a first cylindrical section, a hollow frustum section, a second cylindrical section, and a third fixing flange that are sequentially connected;

[0015] The inner diameter of the first cylindrical section is smaller than that of the second cylindrical section. The top end of the first cylindrical section abuts against the bottom surface of the second fixing flange. The inner diameter of the top end of the hollow frustum section is equal to that of the first cylindrical section and they are fixedly connected. The inner diameter of the bottom end of the hollow frustum is equal to that of the second cylindrical section and they are fixedly connected. The third fixing flange is detachably connected with the bearing unit.

[0016] In a possible design, the bearing unit includes a fourth fixing flange and a cylindrical barrel with an open top;

[0017] The fourth fixed flange is provided at the top of the cylindrical tube; the fourth fixed flange corresponds to the third fixed flange in position and is fixedly connected.

[0018] In a possible design, a beaker for containing filtrate is provided inside the cylindrical tube, and the beaker is located directly below the nozzle of the conical funnel section infusion tube.

[0019] In a possible design, a sensor is also provided inside the cylindrical tube;

[0020] The sensor is provided at the bottom of the beaker, and the sensor can measure the weight of the filtrate.

[0021] In a possible design, a control unit is further included;

[0022] The control unit is electrically connected to the sensor.

[0023] In a possible design, the simulation test device for the dehydration effect of the geotextile tube bag of the present utility model further includes an iron backing plate;

[0024] The iron backing plate is provided at the bottom of the bearing unit, and the iron backing plate is used to support and fix the bearing unit, the connecting unit, the high water content mud dehydration unit and the external communication unit.

[0025] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0026] (1) The simulation test device for the dehydration effect of the geotextile tube bag provided by the present utility model can simulate the dehydration effects of high water content mud using different geotextile tubes, find the optimal solution according to the experimental data, so as to quickly find the geotextile tube suitable for the high water content mud, and ultimately achieve the purpose of rapid dehydration.

[0027] (2) The external communication unit and the high water content mud dehydration unit of the present utility model are detachably connected through the first fixed flange and the second fixed flange; the connecting unit and the bearing unit are detachably connected through the third fixed flange and the fourth fixed flange. This setting method takes into account the overall safety and structural stability of the simulation test device when replacing different geotextiles, ensures that the simulation test device will not be damaged or pose a safety hazard during the disassembly process, and moreover, the disassembly process is simple and fast.

[0028] (3) Most of the structures of the simulation test device for the dehydration effect of the geotextile tube bag of the present utility model are made of glass material, which can effectively resist the adhesion of dirt and residues, and moreover, when replacing different geotextiles, it is easy to clean, can shorten the cleaning time, and improve work efficiency.

[0029] (4) The simulation test device of the present utility model can directly conduct experiments on-site and obtain and process experimental data in real time. This immediate feedback not only accelerates the experimental process but also helps researchers promptly identify problems and make adjustments, further improving the experimental efficiency.

[0030] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the subsequent description, and some advantages can be made obvious from the description or understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained from the content specifically pointed out in the description embodiments and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings are only for the purpose of showing specific embodiments and are not considered to be a limitation of the present utility model. Throughout the drawings, the same reference signs represent the same components.

[0032] Figure 1 is a schematic structural diagram of the simulation test device of the present utility model;

[0033] Figure 2 is a front view of the simulation test device of the present utility model;

[0034] Figure 3 is a schematic structural diagram of the external connection unit;

[0035] Figure 4 is a schematic structural diagram of the high water content mud dewatering unit;

[0036] Figure 5 is a top view of the high water content mud dewatering unit.

[0037] Reference Signs:

[0038] 1 - External connection unit; 2 - Geotextile; 3 - Fixed funnel unit; 4 - Connection unit; 5 - Bearing unit; 6 - Sensor; 7 - Computer; 8 - Cylindrical feed pipe; 9 - First fixed flange; 10 - Second fixed flange; 11 - Filtrate delivery pipe; 12 - First cylindrical section; 13 - Hollow frustum section; 14 - Second cylindrical section; 15 - Third fixed flange; 16 - Fourth fixed flange; 17 - Cylindrical barrel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following will specifically describe the preferred embodiments of the present utility model in conjunction with the drawings, where the drawings form a part of the present utility model and are used together with the embodiments of the present utility model to illustrate the principles of the present utility model, and are not used to limit the scope of the present utility model.

[0040] The utility model provides a simulation test device for the dehydration effect of geotextile tube bags. As Figures 1 to 5 shown, the simulation test device includes an external connection unit, a high water content mud dehydration unit, a connection unit and a bearing unit; the external connection unit is arranged above the high water content mud dehydration unit and the two are detachably connected. A geotextile is arranged between the external connection unit and the high water content mud dehydration unit. The high water content mud enters the high water content mud dehydration unit through the external connection unit; the connection unit is of a hollow structure, and the connection unit is sleeved around the high water content mud dehydration unit and is coaxially arranged with it; the top of the connection unit contacts the top of the high water content mud dehydration unit, and the connection unit is used to support the high water content mud dehydration unit; the bearing unit is arranged below the connection unit and the high water content mud dehydration unit, and the bearing unit is used to support and fix the connection unit.

[0041] Specifically, the above-mentioned external connection unit is a channel for connecting the simulation test device to the outside world. The high water content mud enters the high water content mud dehydration unit through the external connection unit; the external connection unit is arranged directly above the high water content mud dehydration unit and the two are detachably connected. Moreover, a geotextile is arranged at the connection between the two, and the geotextile is used to dehydrate the high water content mud to evaluate the dehydration performance (such as dehydration rate, final water content) of different geotextile tube bags. The filtrate formed after the dehydration of the high water content mud is discharged into the bearing unit; in addition, the top end of the connection unit of the utility model abuts against the high water content mud dehydration unit, and the bottom end is detachably connected to the bearing unit. The connection unit is used to connect the high water content mud dehydration unit and the bearing unit, so that each component of the simulation test device is tightly connected together to form a complete device structure, ensuring the stability and smoothness during the dehydration experiment of the high water content mud; the bearing unit is located at the bottom of the simulation test device and is used to support other units and ensure their stability.

[0042] Compared with the prior art, by setting different geotextiles between the external connection unit and the high water content mud dehydration unit, the utility model can simulate the dehydration effect of the high water content mud after using different geotextiles, find the geotextile tube bags suitable for the high water content mud, and achieve the effect of rapid dehydration.

[0043] For the convenience of feeding the high water content mud, as Figure 3 shown, the external connection unit of the utility model includes a cylindrical feed pipe and a first fixing flange; the first fixing flange is arranged at the bottom end of the cylindrical feed pipe and the two are integrally formed; the first fixing flange is used to connect with the high water content mud dehydration unit.

[0044] Specifically, the external communication unit is a channel for the experimental system to connect with the outside world. High-water-content mud can be poured into the experimental system through the cylindrical feed pipe of the external communication unit. At the same time, a first fixed flange is provided at the bottom of the external communication unit, and the first fixed flange can realize a detachable connection with the high-water-content mud dehydration unit.

[0045] Compared with the prior art, the utility model can ensure the smooth flow of high-water-content mud when feeding by providing a cylindrical feed pipe, and can achieve a detachable connection with a high-water-content mud dehydration unit by providing a first fixed flange.

[0046] It should be noted that the material of the cylindrical feed pipe of the utility model is organic glass, and the use of organic glass can reduce the cost of the experimental system compared to other materials. In the actual engineering test, the height of the cylindrical feed pipe is determined according to the amount of high-water content mud to be poured. In order to ensure the stability of the entire experiment and avoid the tilt of the experimental system, the height of the cylindrical feed pipe of the utility model is less than or equal to 260mm.

[0047] For example, the cylindrical feed tube of the utility model has a height of 80 mm, an outer diameter of 82 mm, an inner diameter of 80 mm, and a volume of 401.920 cm 3 (about 400ml); when high-water content mud is fed, the designed injection volume of high-water content mud is 300ml, ensuring that 100ml of space is reserved in the cylindrical feed pipe to prevent the high-water content mud from overflowing from the mouth of the cylindrical feed pipe.

[0048] It should be noted that, according to the design requirements, when the height of the cylindrical feed pipe exceeds 260 mm, for example, the height of the cylindrical feed pipe is 260+X mm (X≤740 mm), the height of the connecting unit and the bearing unit needs to be increased. This ensures that the center of gravity of the simulation test device as a whole does not shift too much, thereby ensuring its stability.

[0049] It should be pointed out that the material of the first fixing flange of the utility model is also organic glass, the diameter of the first fixing flange is 80 mm, the outer diameter is 120 mm, the center diameter is 110 mm, the thickness is 10 mm, and the number of holes is 8.

[0050] In order to achieve a detachable connection with the external communication unit, such as Figure 4 and Figure 5 As shown, the high-water content mud dehydration unit of the utility model includes a second fixed flange and a filtrate delivery pipe; the second fixed flange is arranged at the top end of the filtrate delivery pipe, the second fixed flange is arranged corresponding to the first fixed flange, and the external communication unit and the high-water content mud dehydration unit are detachably connected through the first fixed flange and the second fixed flange.

[0051] Specifically, the structure of the second fixed flange is the same as that of the first fixed flange in terms of material, structure, and specifications. That is, the material of the second fixed flange is also plexiglass. The nominal diameter of the second fixed flange is 80 mm, the outer diameter is 120 mm, the center diameter is 110 mm, the thickness is 10 mm, and the number of holes is 8. When connecting the external connection unit to the high moisture content mud dewatering unit, first place the geotextile between the first fixed flange and the second fixed flange, then align the first fixed flange and the second fixed flange, that is, align the holes on both of them. Finally, detachably connect the two with bolts. After the geotextile is fixed, the filtrate filtered out from the high moisture content mud through the geotextile is transported to the bearing unit through the filtrate delivery pipe.

[0052] Compared with the prior art, the utility model fixes the geotextile through the first fixed flange and the second fixed flange. When it is necessary to replace different geotextiles, simply disassemble the first fixed flange and the second fixed flange for replacement, and the operation is simple.

[0053] In order to transport the filtrate to the bearing unit, the filtrate delivery pipe of the utility model includes a first cylindrical section delivery pipe, a conical funnel section infusion pipe, and a second cylindrical section delivery pipe with gradually decreasing inner diameters. The top end of the first cylindrical section delivery pipe is fixedly connected to the second fixed flange, and its bottom end is fixedly connected to the conical funnel section infusion pipe. The bottom of the conical funnel section infusion pipe is communicated with the second cylindrical section delivery pipe.

[0054] Specifically, the material of the filtrate delivery pipe is selected as plexiglass. The height of the first cylindrical section delivery pipe is 30 mm, the upper diameter of the conical funnel section infusion pipe is 80 mm, the lower diameter is 10 mm, the pipe length of the conical funnel section infusion pipe is 40 mm, the height of the second cylindrical section is 50 mm, and the total height of the filtrate delivery section is 120 mm.

[0055] In order to connect each unit into a whole, the connection unit of the utility model includes, from top to bottom, a first cylindrical section, a hollow frustum section, a second cylindrical section, and a third fixed flange that are connected in sequence. The inner diameter of the first cylindrical section is smaller than that of the second cylindrical section, and the top end of the first cylindrical section abuts against the bottom surface of the second fixed flange. The inner diameter of the top end of the hollow frustum section is equal to that of the first cylindrical section and the two are fixedly connected. The inner diameter of the bottom end of the hollow frustum section is equal to that of the second cylindrical section and the two are fixedly connected. The third fixed flange is detachably connected to the bearing unit.

[0056] The utility model uses the connection unit to connect the high moisture content mud dewatering unit and the bearing unit, so that the simulation test device forms a complete simulation system, thereby ensuring the stability and smoothness during the experiment.

[0057] To provide stable support for other units, the bearing unit of the present utility model includes a fourth fixed flange and a cylindrical barrel with an open upper end and a closed lower end; the fourth fixed flange is provided at the top of the cylindrical barrel; the fourth fixed flange corresponds to the third fixed flange in position and is fixedly connected.

[0058] Specifically, the fourth fixed flange and the third fixed flange have the same structure, material, and specifications. The connection unit and the bearing unit are detachably connected through the third fixed flange and the fourth fixed flange. The bearing unit can provide stable and firm support for the connection unit, the high-moisture-content mud dehydration unit on the connection unit, and the external communication unit.

[0059] To hold the filtrate, a beaker for holding the filtrate is provided inside the cylindrical barrel of the present utility model, and the beaker is located directly below the nozzle of the conical funnel section infusion tube. In addition, a sensor is also provided inside the cylindrical barrel; the sensor is provided at the bottom of the beaker, and the sensor can output data on the weight change of the filtrate.

[0060] It should be noted that the beaker for holding the filtrate is made of ordinary glass, with a height of 114 mm, a diameter of 90 mm, and a capacity of 500 ml to ensure that the filtered filtrate will not overflow. In addition, the above-mentioned sensor is a strain gauge sensor, with a range of 0 - 3 kg, an accuracy of 10 g, a model number of DYHW - 116, and a quantity of 4, which are evenly placed at the bottom of the beaker.

[0061] The above-mentioned strain gauge sensor is a device that uses the resistance strain effect to measure the deformation and strain of an object, and the weight change of the filtrate can be measured through the strain gauge sensor.

[0062] It should be noted that the simulation test device for the dehydration effect of the geotextile tube bag of the present utility model further includes a control unit; the control unit is connected to the sensor in a controlled manner.

[0063] Specifically, the above-mentioned control unit includes a computer, which is equipped with a high-precision sensor and a data acquisition module. The high-precision sensor and the data acquisition module can monitor and record the dehydration test data during the experiment in real time, process the experimental data, and evaluate the dehydration effect of the high-moisture-content mud through the dehydration test data.

[0064] When conducting an experiment on the dehydration effect of high-moisture-content mud at the engineering site, to ensure the stability of other units, the experimental system of the present utility model further includes an iron backing plate; the iron backing plate is provided at the bottom of the bearing unit, and the iron backing plate is used to support and fix the bearing unit, the connection unit, the high-moisture-content mud dehydration unit, and the external communication unit.

[0065] The above-mentioned iron backing plate is a circular iron backing plate, with a diameter of 18 cm, a height of 0.5 cm, and a weight of 1 kg.

[0066] When the simulation test device is applied to the actual scenario, due to the uneven ground, by setting iron gaskets at the bottom of the bearing unit, its stability can be maintained; in addition, the iron gaskets and the bearing unit are designed separately, which is convenient to carry.

[0067] It should be emphasized that since most of the materials of the external connection unit, high water content mud dewatering unit, connection unit and bearing unit of the present utility model are plexiglass, and each unit is connected by a flange, it is easy to disassemble and clean.

[0068] In summary, according to the physical and chemical properties of the high water content mud (including particle size, water content, organic matter content), the present utility model can select a geotextile tube bag that matches it, and then achieve the best dewatering effect.

[0069] Embodiment 1

[0070] The process of simulating the dewatering effect by using the above-mentioned simulation test device for the dewatering effect of the geotextile tube bag specifically includes the following processes:

[0071] Step 1. Install the simulation test device for the dewatering effect of the geotextile tube bag;

[0072] Step 11. Place the beaker for holding the filtrate in the cylindrical tube of the bearing unit, set a sensor at the bottom of the beaker, and connect the sensor to the computer;

[0073] Step 12. Set the connection unit on the bearing unit, and the fourth fixed flange of the bearing unit and the third fixed flange of the connection unit are detachably connected;

[0074] Step 13. Place the high water content mud dewatering unit on the connection unit, and extend the filtrate delivery pipe of the high water content mud dewatering unit into the connection unit, that is, the first cylindrical section delivery pipe, the conical funnel section delivery pipe and the second cylindrical section delivery pipe of the filtrate delivery pipe are all located in the connection unit, and the second cylindrical section delivery pipe is directly above the beaker for holding the filtrate; at this time, the second fixed flange is outside the connection unit and at the top of the connection unit;

[0075] Step 14. Lay the selected geotextile on the top surface of the second fixed flange, then place the external connection unit on the top of the high water content mud dewatering unit, align the first fixed flange and the second fixed flange and then perform detachable connection to fix the geotextile;

[0076] Step 2. Treat the high water content mud with a flocculant;

[0077] Step 3. Pour the high water content mud treated with the flocculant into the simulation test device;

[0078] Step 4: Use the simulation test device for the dehydration effect of the geotextile tube bags installed in Step 1 to dehydrate the high water content slurry treated with the flocculant, and record the dehydration data during the dehydration process.

[0079] It should be noted that by repeating the dehydration process of Example 1, replacing different types of geotextiles, and analyzing and comparing the dehydration data corresponding to different types of geotextiles, the geotextile that matches the high water content slurry can be found.

[0080] In summary, through the simulation test device of the present utility model, the theoretical optimal dehydration parameters can be found between the high water content slurry and the geotextile, and on-site verification can be carried out, which not only provides a scientific basis for on-site construction, but also greatly saves time and money costs.

[0081] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A simulation test device for the dehydration effect of geotextile tube bags, characterized in that, It includes an external connection unit, a high water content mud dewatering unit, a connection unit and a bearing unit; The external connection unit is arranged above the high water content mud dewatering unit and is detachably connected therebetween. A geotextile is provided between the external connection unit and the high water content mud dewatering unit. The high water content mud enters the high water content mud dewatering unit through the external connection unit. The connection unit is of a hollow structure and is sleeved around the high water content mud dewatering unit and coaxially arranged therewith. The connection unit is used to support the high water content mud dewatering unit; The bearing unit is arranged below the connection unit and the high water content mud dewatering unit, and the bearing unit is used to support and fix the connection unit.

2. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 1, wherein, The external connection unit includes a cylindrical feed pipe and a first fixing flange; The first fixing flange is arranged at the bottom end of the cylindrical feed pipe and is integrally formed therewith. The first fixing flange is used to connect with the high water content mud dewatering unit.

3. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 2, wherein The high water content mud dewatering unit includes a second fixing flange and a filtrate conveying pipe; The second fixing flange is arranged at the top end of the filtrate conveying pipe. The second fixing flange is correspondingly arranged with the first fixing flange. The external connection unit and the high water content mud dewatering unit are detachably connected through the first fixing flange and the second fixing flange.

4. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 3, characterized in that, The filtrate conveying pipe includes a first cylindrical section conveying pipe, a conical funnel section conveying pipe and a second cylindrical section conveying pipe with sequentially decreasing inner diameters; The top end of the first cylindrical section conveying pipe is fixedly connected with the second fixing flange, and its bottom end is fixedly connected with the conical funnel section conveying pipe. The bottom of the conical funnel section conveying pipe is connected with the second cylindrical section conveying pipe.

5. The simulation test device for the dehydration effect of geotextile tube bags according to claim 4, characterized in that, The connection unit includes, from top to bottom, a first cylindrical section, a hollow frustum section, a second cylindrical section and a third fixing flange which are sequentially connected; The inner diameter of the first cylindrical section is smaller than that of the second cylindrical section. The top end of the first cylindrical section abuts against the bottom surface of the second fixing flange. The inner diameter of the top end of the hollow frustum section is equal to that of the first cylindrical section and they are fixedly connected. The inner diameter of the bottom end of the hollow frustum is equal to that of the second cylindrical section and they are fixedly connected. The third fixing flange is detachably connected with the bearing unit.

6. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 5, characterized in that, The bearing unit includes a fourth fixing flange and a cylindrical barrel with an open top end; The fourth fixing flange is arranged at the top end of the cylindrical barrel. The fourth fixing flange is correspondingly positioned and fixedly connected with the third fixing flange.

7. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 6, characterized in that, A beaker for containing filtrate is arranged in the cylindrical barrel and is directly below the pipe orifice of the conical funnel section conveying pipe.

8. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 7, characterized in that, A sensor is also arranged in the cylindrical barrel; The sensor is arranged at the bottom of the beaker, and the sensor can measure the weight of the filtrate.

9. The simulation test device for the dehydration effect of the geotextile tube bag according to claim 8, wherein, It further includes a control unit; The control unit is electrically connected with the sensor.

10. The simulation test device for the dehydration effect of the geotextile tube bag according to any one of claims 1 to 9, characterized in that, It further includes an iron pad; The iron pad is arranged at the bottom of the bearing unit, and the iron pad is used to support and fix the bearing unit, the connection unit, the high water content mud dewatering unit and the external connection unit.

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