Drainage device and soft soil reinforcement construction method

Abstract

The invention relates to a drainage device and a soft soil reinforcement construction method.The drainage device comprises a vacuum pump, a drainage plate and two opposite vertical drainage pipes, the vacuum pump communicates with one drainage pipe, and the two vertical drainage pipes are connected through the drainage plate; the length of the drainage plate is larger than the distance between the two vertical drainage pipes, the drainage plate is provided with a water seepage face allowing soil pore water to enter, and drainage channels capable of being communicated with the vertical drainage pipes are further arranged in the drainage plate. According to the drainage device and the soft soil reinforcement construction method, the problem that a drainage plate in existing vacuum preloading is prone to being bent, deformed and tensioned is solved.

Description

Technical Field

[0001] The invention relates to the technical field of drainage equipment, and in particular to a drainage device and a soft soil reinforcement construction method. Background Art

[0002] In recent years, with the rapid development of my country's economy, the problem of waste mud accumulation caused by projects such as slurry shield tunnels and dredging of rivers, lakes, reservoirs and ponds has become increasingly prominent. On the one hand, the output of waste mud is huge, and on the other hand, waste mud is difficult to transport, cannot be directly used, and has polluting properties, which has a huge impact on the economy and the environment. The treatment, processing and resource utilization of waste mud have become the main bottleneck restricting my country's ecological construction and economic sustainable development. Therefore, the waste mud must be reinforced. The vacuum preloading method is a relatively mature method that is widely used in the field of silt reinforcement.

[0003] The vacuum preloading method is a method of reinforcing soft soil foundations by vacuuming. The surface of the soft soil foundation is sealed, and then vacuuming is performed to form a negative pressure under the membrane to discharge the excess pore water in the soil, reduce the pore water pressure in the soil, and increase the effective stress of the soil, thereby reinforcing the soil. However, since the compression of silt during the vacuum preloading process has obvious large deformation characteristics and the vacuum preloading reinforcement area has a relatively obvious phenomenon of high in the middle and low around, the vertical drainage board set in the existing vacuum preloading method is prone to bending, and the horizontal drainage board set will cause deformation and tensioning problems. Summary of the invention

[0004] The main purpose of the present invention is to propose a method for solving the problem that the drainage board in the existing vacuum preloading is prone to bending and deformation.

[0005] To achieve the above-mentioned purpose, the present invention proposes a drainage device, including a vacuum pump, a drainage board and two vertical drainage pipes arranged opposite to each other, the vacuum pump is connected to one of the drainage pipes, the two vertical drainage pipes are connected through the drainage board, the length of the drainage board is greater than the spacing between the two vertical drainage pipes, the drainage board has a seepage surface for soil pore water to enter, and the drainage board also has a drainage channel that can be connected to each of the vertical drainage pipes.

[0006] According to some embodiments of the present invention, a fixing mechanism for installing and fixing the drain board is further included. The drain board is spirally arranged and wound on the fixing mechanism. The drain board and the fixing mechanism are detachably installed.

[0007] According to some embodiments of the present invention, the fixing mechanism includes a support tube connected to a high-temperature liquid pump, and the drainage board is adhered to the support tube by a low-temperature hot-melt adhesive.

[0008] According to some embodiments of the present invention, there are multiple support tubes, and the fixing mechanism also includes a driving assembly, a transmission assembly and a plurality of mounting parts. Each of the support tubes is connected to the mounting parts one by one, and the plurality of mounting parts are arranged at intervals in the circumferential direction of the transmission assembly. The transmission assembly is driven by the driving assembly to retract and expand, so as to drive the support tubes connected to each of the mounting parts to move closer to or away from each other.

[0009] According to some embodiments of the present invention, the driving assembly includes an inner rod and an outer rod movably mounted on the inner rod, the extension directions of the inner rod and the outer rod are parallel to the extension direction of the support tube, the outer rod is provided with a plurality of elongated holes spaced apart in its circumference, each of the elongated holes extends along the length direction of the outer rod, the transmission assembly includes a plurality of connecting rods and a plurality of supporting foot rods, one end of the connecting rod is hinged to the outer rod, and the other end is hinged to the corresponding mounting portion, one end of the supporting foot rod passes through the elongated hole and is hinged to the inner rod, and the other end is hinged to the connecting rod.

[0010] In addition, the present invention also provides a soft soil reinforcement construction method, comprising the following steps:

[0011] S1: Clean, level and seal the reinforcement groove in the area to be reinforced;

[0012] S2: Obtaining the required number of drain boards to be installed, and determining multiple installation positions of the drain boards according to the required number of drain boards to be installed;

[0013] S3: prefabricate a fixing mechanism and spread the fixing mechanism;

[0014] S4: Assembling a vertical drain pipe, a drain plate and a fixing mechanism at one of the installation positions in the reinforcement groove;

[0015] S5: backfilling some soft soil into the reinforcement groove;

[0016] S6: After backfilling is completed, the fixing mechanism is disconnected from the drainage board;

[0017] S7: Repeat steps S4 to S6 until all vertical drain pipes and drain boards are installed;

[0018] S8: Perform sealing treatment on the surface of soft soil;

[0019] S9: Connect the vacuum pump to each of the vertical drainage pipes, and start the vacuum pump to start vacuum preloading to extract the pore water in the soft soil to achieve soft soil reinforcement.

[0020] According to some embodiments of the present invention, in step S2, the method includes:

[0021] S2.1: Obtain the three-dimensional size of the reinforcement groove and the drainage influence range of a single drainage board;

[0022] S2.2: Determine the required number of drainage boards to be installed according to the three-dimensional dimensions of the reinforcement groove and the drainage influence range;

[0023] S2.3: Use a theodolite and a steel ruler to mark lines and locate within the area to be reinforced according to the required installation quantity to determine multiple installation positions of the drainage board.

[0024] According to some embodiments of the present invention, in step S3, the method includes:

[0025] S3.1: A plurality of elongated holes are provided on the outer rod at intervals along the circumference thereof;

[0026] S3.2: Nesting the inner rod within the outer rod;

[0027] S3.3: hinge one end of one of the connecting rods to the outer rod, and hinge the other end to the corresponding mounting portion;

[0028] S3.4: hinge one end of the corresponding supporting foot rod to the connecting rod, and pass the other end through the long hole and hinge to the inner rod;

[0029] S3.5: Repeat steps S3.3 to S3.4 until all connecting rods, mounting parts and supporting foot rods are installed;

[0030] S3.6: Pushing the outer rod to open the connecting rod and the supporting foot rod, so that the mounting parts are away from each other;

[0031] S3.7: Install each of the support tubes and the mounting parts in a one-to-one correspondence to achieve the expansion of the fixing mechanism.

[0032] According to some embodiments of the present invention, in step S4, the method includes:

[0033] S4.1: inserting the vertical drain pipes at both ends of one of the installation positions in the reinforcement groove;

[0034] S4.2: spirally wrap a drain board on the support pipe of the fixing mechanism with a pitch greater than twice the width of the drain board, adhere the drain board to the support pipe by low-temperature hot melt adhesive, and connect the two ends of the drain board to two vertical drain pipes respectively;

[0035] S4.3: Wrap another drain board spirally around the support tube of the fixing mechanism with a pitch greater than twice the width of the drain board to form a double helix structure, adhere the drain board to the support tube with the low-temperature hot melt adhesive, and connect the two ends of the drain board to two vertical drain pipes respectively.

[0036] According to some embodiments of the present invention, in step S6, the method includes:

[0037] S6.1: connecting the high-temperature liquid pump to the plurality of support tubes, and introducing high-temperature liquid into the support tubes to melt the low-temperature hot melt adhesive;

[0038] S6.2: Pull the outer rod of the fixing mechanism to close the connecting rod and the supporting foot rod, so that the supporting tubes are close to each other, so as to drive the fixing mechanism to close and disconnect from the drainage board;

[0039] S6.3: Use an extraction device to extract the fixing mechanism from the soft soil.

[0040] The present invention has at least the following beneficial effects:

[0041] In the present invention, since the silt soft soil has obvious large deformation characteristics in the vertical direction during the vacuum preloading process, by setting two vertical drain pipes inserted into the area to be reinforced, the vertical drain pipes extend vertically, which can reduce the vertical force area of ​​the vertical drain pipes. At the same time, compared with the flexible drain board, the vertical drain pipe has stronger anti-bending ability, which can solve the problem that the vertical drain board is easy to bend in the existing vacuum preloading method. At the same time, there is a drain board connected between the two vertical drain pipes, which can play a role in supporting the drain board on the one hand, and can discharge the pore water that penetrates into the drain board on the other hand. Since the length of the horizontally arranged drain board is greater than the spacing between the two vertical drain pipes, that is, the drain board is bent, even if deformation occurs, most of the deformation is borne by the elastic bending structure, and the deformation of the single-section drain board is small, and it is not easy to have the deformation tension problem of the existing horizontal drain board, and the bent drain board can increase the contact area with the soft soil and increase the amount of water that penetrates into the drain board, thereby improving the drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the structure of a drainage device provided by an embodiment of the present invention;

[0044] Figure 2 for Figure 1 A schematic diagram of the structure of the fixing mechanism in FIG.

[0045] Figure 3 for Figure 2 A is a partial enlarged schematic diagram;

[0046] Figure 4 -a to Figure 4 -c is Figure 1 Cross-sectional views of three embodiments of the drain board;

[0047] Figure 5 It is a schematic diagram of the process of the first embodiment of the soft soil reinforcement construction method of the present invention;

[0048] Figure 6 It is a schematic diagram of the process of the second embodiment of the soft soil reinforcement construction method of the present invention;

[0049] Figure 7 It is a schematic diagram of the process of the third embodiment of the soft soil reinforcement construction method of the present invention;

[0050] Figure 8 It is a schematic diagram of the process of the fourth embodiment of the soft soil reinforcement construction method of the present invention;

[0051] Fig. 9 It is a schematic flow chart of the fifth embodiment of the soft soil reinforcement construction method of the present invention.

[0052] Description of reference numerals:

[0053] 100-drainage device; 1-vacuum pump; 2-drainage board; 21-core board; 22-filter membrane; 3-vertical drainage pipe; 4-fixing mechanism; 41-support pipe; 42-drive assembly; 421-inner rod; 422-outer rod; 4221-long hole; 43-transmission assembly; 431-connecting rod; 432-support foot rod; 44-installation part; 200-high temperature liquid pump. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] The present invention provides a drainage device and a soft soil reinforcement construction method. Figures 1 to 9 A specific embodiment of a drainage device and a soft soil reinforcement construction method provided by the present invention.

[0058] like Figure 1 As shown, an embodiment of the present invention provides a drainage device 100, including a vacuum pump 1, a drainage board 2 and two vertical drainage pipes 3 arranged opposite to each other, the vacuum pump 1 is connected to one of the drainage pipes, the two vertical drainage pipes 3 are connected through the drainage board 2, the length of the drainage board 2 is greater than the spacing between the two vertical drainage pipes 3, the drainage board 2 has a seepage surface for soil pore water to enter, and the drainage board 2 also has a drainage channel that can be connected to each of the vertical drainage pipes 3.

[0059] In the present invention, since the silt soft soil has obvious large deformation characteristics in the vertical direction during the vacuum preloading process, by setting two vertical drain pipes 3 to be inserted into the area to be reinforced, the vertical drain pipes 3 extend vertically, which can reduce the vertical force area of ​​the vertical drain pipes 3. At the same time, compared with the flexible drain board 2, the vertical drain pipe 3 has stronger anti-bending ability, which can solve the problem that the vertical drain board 2 is easy to bend in the existing vacuum preloading method. At the same time, the drain board 2 is connected between the two vertical drain pipes 3, which can play a role in supporting the drain board 2 on the one hand, and can discharge the pore water infiltrated into the drain board 2 on the other hand. Since the length of the horizontally arranged drain board 2 is greater than the spacing between the two vertical drain pipes 3, that is, the drain board 2 is bent, even if deformation occurs, most of the deformation is borne by the elastic bending structure, the deformation of the single-section drain board 2 is small, and the deformation tension problem of the existing horizontal drain board 2 is not easy to occur, and the bent drain board 2 can increase the contact area with the soft soil and increase the amount of infiltration into the drain board 2, thereby improving the drainage efficiency.

[0060] Specifically, the drainage board 2 is a plastic drainage belt, and its cross-sectional dimensions are generally 100 mm wide and 3.5 to 8 mm thick. The drainage board 2 includes a core board 21 and a filter membrane 22 coated on the core board 21. The core board 21 is made of a mixture of polypropylene and polyethylene, which has the rigidity of polypropylene and the flexibility and weather resistance of polyethylene. Figure 4 -a to Figure 4 -c, the cross-section of the core plate 21 has battlement type, harmonica type and nipple type, and the core plate 21 plays a supporting role and discharges the pore water infiltrated from the filter membrane 22. The filter membrane 22 is made of long-fiber hot-bonded non-woven fabric, which has excellent water immersion resistance and water permeability. The filter membrane 22 can be wrapped with the core plate 21 by ultrasonic vibration method, so that the filter membrane 22 and the core plate 21 are firmly integrated.

[0061] After the vertical drain pipe 3 and the drain board 2 are installed in the area to be reinforced, it is necessary to backfill the area to be reinforced with soft soil. During the backfilling process, the soft soil will exert a large impact force on the drain board 2. In order to avoid the drain board 2 from being greatly deformed before vacuum preloading, in some embodiments, such as Figure 1 As shown, the drainage device 100 further includes a fixing mechanism 4 for installing and fixing the drainage board 2. The drainage board 2 is spirally arranged and wound on the fixing mechanism 4. The drainage board 2 and the fixing mechanism 4 are detachably installed. In this arrangement, the drainage board 2 is supported by the fixing mechanism 4 to prevent the drainage board 2 from being subjected to impact force during backfilling of soft soil, resulting in a large deformation before vacuum preloading. Since the drainage board 2 and the fixing mechanism 4 are detachably installed, the fixing mechanism 4 can be taken out after the backfilling of soft soil is completed. On the one hand, the fixing mechanism 4 can be reused, and on the other hand, the fixing mechanism 4 can be prevented from affecting the deformation of the spiral structure of the drainage board 2 during the vacuum preloading process.

[0062] It should be noted that, in order to further improve the drainage efficiency of the drainage device 100, in some embodiments, Figure 1 As shown, two drain plates 2 are provided, one end of each drain plate 2 is connected to one of the vertical drain pipes 3, and the other end is connected to the other vertical drain pipe 3, and the two drain plates 2 are both spirally arranged and wound on the fixing mechanism 4 to form a double spiral structure. By increasing the number of drain plates 2, the contact area between the drain plates 2 and the soft soil is increased, thereby improving the drainage efficiency of the drainage device 100.

[0063] The specific installation method of the drain plate 2 and the fixing mechanism 4 is not limited, as long as the drain plate 2 and the fixing mechanism 4 can be detachably installed. For example, in some embodiments, Figure 1 and Figure 2As shown, the fixing mechanism 4 includes a support tube 41 connected to the high-temperature liquid pump 200, and the drain board 2 is adhered to the support tube 41 by a low-temperature hot melt adhesive. In this way, the drain board 2 is adhered to the support tube 41 of the fixing mechanism 4 by the low-temperature hot melt adhesive. When the connection between the drain board 2 and the fixing mechanism 4 needs to be released, high-temperature liquid is injected into the support tube 41 by the high-temperature liquid pump 200 to melt the low-temperature hot melt adhesive, thereby realizing the detachable installation of the drain board 2 and the fixing mechanism 4. Specifically, the material of the support tube 41 is PVC material or metal material to achieve a better support effect, and at the same time, the heat of the high-temperature liquid in the support tube 41 can be conducted to the low-temperature hot melt adhesive on the outer wall of the support tube 41.

[0064] Furthermore, the specific structure of the fixing mechanism 4 is not limited, as long as the fixing mechanism 4 can support the drain board 2 and can be removed after being disconnected from the drain board 2. In some embodiments, Figure 2 and Figure 3 As shown, the support tubes 41 are provided with a plurality of tubes, and the fixing mechanism 4 further includes a driving assembly 42, a transmission assembly 43 and a plurality of mounting parts 44, each of the support tubes 41 is connected to the mounting parts 44 in a one-to-one correspondence, and the plurality of mounting parts 44 are arranged at intervals in the circumferential direction of the transmission assembly 43, and the transmission assembly 43 is driven by the driving assembly 42 to be retracted and expanded, so as to drive the support tubes 41 connected to the mounting parts 44 to move closer to or away from each other. In this arrangement, when the fixing mechanism 4 is required to connect and support the drain board 2, the driving assembly 42 drives the transmission assembly 43 to be opened, so as to drive the support tubes 41 to move away from each other, so that the fixing mechanism 4 is stretched open, so as to support and connect the drain board 2 later; when the fixing mechanism 4 needs to be removed, the driving assembly 42 drives the transmission assembly 43 to be retracted, so as to drive the support tubes 41 to move closer to each other, so that the fixing mechanism 4 is retracted, and it is convenient to remove the fixing mechanism 4.

[0065] Furthermore, the specific structures of the driving assembly 42 and the transmission assembly 43 are not limited, as long as the transmission assembly 43 is driven by the driving assembly 42 to retract. For example, in some embodiments, Figure 3As shown, the driving assembly 42 includes an inner rod 421 and an outer rod 422 movably mounted on the inner rod 421, the extension directions of the inner rod 421 and the outer rod 422 are parallel to the extension direction of the support tube 41, the outer rod 422 is provided with a plurality of elongated holes 4221 spaced apart in its circumference, each of the elongated holes 4221 extends along the length direction of the outer rod 422, the transmission assembly 43 includes a plurality of connecting rods 431 and a plurality of supporting foot rods 432, one end of the connecting rod 431 is hinged to the outer rod 422, and the other end is hinged to the corresponding mounting portion 44, one end of the supporting foot rod 432 passes through the elongated hole 4221 and is hinged to the inner rod 421, and the other end is hinged to the connecting rod 431. With such arrangement, the outer rod 422 can be driven to move on the inner rod 421 to drive the connecting rod 431 to rotate relative to the outer rod 422, and the supporting foot rod 432 can rotate relative to the inner rod 421, so that the supporting foot rod 432 can rotate relative to the connecting rod 431, and the mounting portion 44 can rotate relative to the connecting rod 431, thereby causing the mounting portion 44 to move toward or away from the outer rod 422, and the supporting tubes 41 can move toward or away from each other. The specific opening and closing process of the fixing mechanism 4 is similar to that of a long-handled umbrella.

[0066] In addition, if Figure 5 As shown, based on the drainage device 100, the present invention also provides a soft soil reinforcement construction method, comprising the following steps:

[0067] S1: Clean, level and seal the reinforcement groove in the area to be reinforced.

[0068] It should be noted that since the vacuum preloading method reduces the air pressure in the drainage board 2 and the area to be reinforced so that the pore water in the soft soil enters the drainage board 2 for drainage, it is necessary to seal the reinforcement groove to prevent external gas from entering the reinforcement groove and affecting the drainage effect.

[0069] S2: Obtain the required installation quantity of the drain board 2, and determine multiple installation positions of the drain board 2 according to the required installation quantity.

[0070] S3: Prefabricate the fixing mechanism 4 and expand the fixing mechanism 4.

[0071] It should be noted that steps S1 to S3 can be executed simultaneously without strict sequence restrictions, and can be executed in other sequences.

[0072] S4: Assemble the vertical drain pipe 3, the drain plate 2 and the fixing mechanism 4 at one of the installation positions in the reinforcement groove.

[0073] S5: backfilling some soft soil into the reinforcement trench.

[0074] It should be noted that, in the actual construction process, the soft soil is generally silt.

[0075] S6: After the backfilling is completed, the fixing mechanism 4 is disconnected from the drainage board 2.

[0076] S7: Repeat steps S4 to S6 until all vertical drain pipes 3 and drain boards 2 are installed.

[0077] S8: Perform sealing treatment on the surface of soft soil.

[0078] It should be noted that a vacuum sealing film is laid on the surface of the soft soil to achieve sealing of the soft soil, thereby improving the drainage effect of the drainage device 100.

[0079] S9: Connect the vacuum pump 1 to each of the vertical drainage pipes 3, and start the vacuum pump 1 to start vacuum preloading to extract the pore water in the soft soil to achieve soft soil reinforcement.

[0080] The present invention applies the drainage device 100 to the area to be reinforced to drain the pore water in the area to be reinforced, so as to realize the reinforcement of the soft soil in the area to be reinforced. The soft soil reinforcement construction method includes S1: cleaning, leveling and sealing the reinforcement groove in the area to be reinforced; S2: obtaining the required number of drainage boards 2 to be installed, and determining multiple installation positions of the drainage boards 2 according to the required number of installations; S3: prefabricating a fixing mechanism 4 and spreading the fixing mechanism 4; S4: installing one of the fixing mechanisms in the reinforcement groove; Assemble the vertical drain pipe 3, drain board 2 and fixing mechanism 4 in position; S5: backfill part of the soft soil into the reinforcement groove; S6: disconnect the fixing mechanism 4 from the drain board 2 after backfilling; S7: repeat steps S4 to S6 until all vertical drain pipes 3 and drain boards 2 are installed; S8: perform sealing treatment on the surface of the soft soil; S9: connect the vacuum pump 1 to each of the vertical drain pipes 3, and start the vacuum pump 1 to start vacuum preloading to extract the pore water in the soft soil to achieve soft soil reinforcement.

[0081] refer to Figure 6 , Figure 6 It is a schematic diagram of the process of the second embodiment of the soft soil reinforcement construction method of the present invention.

[0082] Based on the above first embodiment, the soft soil reinforcement construction method of this embodiment includes, in step S2:

[0083] S2.1: Obtain the three-dimensional size of the reinforcement groove and the drainage influence range of a single drainage board 2.

[0084] It should be noted that the three-dimensional dimensions of the reinforcement groove are the length, width and depth of the reinforcement groove, and the drainage influence range is the length, width and height of the soft soil range that can be affected after the vacuum is drawn in the drainage board 2.

[0085] S2.2: Determine the required number of drainage boards 2 to be installed according to the three-dimensional size of the reinforcement groove and the drainage influence range.

[0086] It should be noted that by dividing the measured length, width and depth of the reinforcement groove and the length, width and height of the soft soil affected by the drainage board 2 obtained through experiments, the number of drainage boards 2 installed in three directions can be obtained, and the sum of the three installation quantities is the required installation quantity.

[0087] S2.3: Use a theodolite and a steel ruler to mark lines and locate within the area to be reinforced according to the required installation quantity, and determine multiple installation positions of the drainage board 2.

[0088] In the present invention, the length, width and depth of the reinforcement groove are first obtained by measurement, and the length, width and height of the soft soil affected by the drain board 2 are obtained by experiment. Then, the two sets of data are divided one by one to obtain the number of drainage boards 2 installed in three directions. The sum of the three installation numbers is the required installation number. Finally, according to the required installation number, a theodolite and a steel ruler are used to mark and locate within the area to be reinforced to determine multiple installation positions of the drain board 2.

[0089] refer to Figure 7 , Figure 7 It is a schematic diagram of the process of the third embodiment of the soft soil reinforcement construction method of the present invention.

[0090] Based on the first embodiment described above, the soft soil reinforcement construction method of this embodiment includes, in step S3:

[0091] S3.1: A plurality of elongated holes 4221 are provided on the outer rod 422 at intervals along its circumference.

[0092] S3.2: Nest the inner rod 421 inside the outer rod 422 .

[0093] S3.3: One end of one of the connecting rods 431 is hinged to the outer rod 422 , and the other end is hinged to the corresponding mounting portion 44 .

[0094] S3.4: One end of the corresponding supporting foot rod 432 is hinged to the connecting rod 431 , and the other end passes through the long hole 4221 and is hinged to the inner rod 421 .

[0095] S3.5: Repeat steps S3.3 to S3.4 until all the connecting rods 431, the mounting parts 44 and the supporting foot rods 432 are installed.

[0096] S3.6: Push the outer rod 422 to open the connecting rod 431 and the supporting foot rod 432 so that the mounting parts 44 are away from each other.

[0097] S3.7: Install each of the support tubes 41 and the mounting portions 44 in a one-to-one correspondence to achieve the expansion of the fixing mechanism 4 .

[0098] It should be noted that the principle of the process of opening and closing the fixing mechanism 4 is similar to that of a long-handled umbrella.

[0099] In the present invention, a plurality of long holes 4221 are firstly provided on the outer rod 422 along its circumferential direction, the inner rod 421 is nested in the outer rod 422, and then one end of one of the connecting rods 431 is hinged to the outer rod 422, and the other end is hinged to the corresponding mounting portion 44, one end of the corresponding supporting foot rod 432 is hinged to the connecting rod 431, and the other end passes through the long hole 4221 and is hinged to the inner rod 421, and steps S3.3 to S3.4 are repeated until all the connecting rods 431, the mounting portions 44 and the supporting foot rods 432 are installed to complete the assembly of the drive assembly 42 and the transmission assembly 43, and then the outer rod 422 is pushed to open the connecting rod 431 and the supporting foot rod 432 so that the mounting portions 44 are away from each other, and finally the supporting tubes 41 are installed one by one with the mounting portions 44 to realize the expansion of the fixing mechanism 4.

[0100] refer to Figure 8 , Figure 8 It is a schematic flow chart of the fourth embodiment of the soft soil reinforcement construction method of the present invention.

[0101] Based on the third embodiment, the soft soil reinforcement construction method of this embodiment includes, in step S4:

[0102] S4.1: Insert the vertical drain pipe 3 into both ends of one of the installation positions in the reinforcement groove.

[0103] S4.2: Spirally wind a drain board 2 on the support tube 41 of the fixing mechanism 4 with a pitch greater than twice the width of the drain board 2, adhere the drain board 2 to the support tube 41 by low-temperature hot melt adhesive, and connect the two ends of the drain board 2 to two vertical drain pipes 3 respectively.

[0104] S4.3: Wrap another drain board 2 spirally around the support tube 41 of the fixing mechanism 4 with a pitch greater than twice the width of the drain board 2 to form a double helix structure, adhere the drain board 2 to the support tube 41 by the low-temperature hot melt adhesive, and connect the two ends of the drain board 2 to two vertical drain pipes 3 respectively.

[0105] In the present invention, the vertical drain pipes 3 are first inserted into the two ends of one of the installation positions in the reinforcement groove, and then a drain board 2 is spirally wound on the support tube 41 of the fixing mechanism 4 with a pitch greater than twice the width of the drain board 2, the drain board 2 is adhered to the support tube 41 by low-temperature hot melt adhesive, and the two ends of the drain board 2 are respectively connected to the two vertical drain pipes 3, and finally another drain board 2 is spirally wound on the support tube 41 of the fixing mechanism 4 with a pitch greater than twice the width of the drain board 2 to form a double helix structure, the drain board 2 is adhered to the support tube 41 by the low-temperature hot melt adhesive, and the two ends of the drain board 2 are respectively connected to the two vertical drain pipes 3 to complete the assembly between the vertical drain pipes 3, the drain board 2 and the fixing mechanism 4.

[0106] refer to Fig. 9 , Fig. 9 It is a schematic flow chart of the fifth embodiment of the soft soil reinforcement construction method of the present invention.

[0107] Based on the fourth embodiment, the soft soil reinforcement construction method of this embodiment includes, in step S6:

[0108] S6.1: Connect the high-temperature liquid pump 200 to the plurality of support tubes 41 , and introduce high-temperature liquid into the support tubes 41 to melt the low-temperature hot melt adhesive.

[0109] S6.2: Pull the outer rod 422 of the fixing mechanism 4 to close the connecting rod 431 and the supporting foot rod 432, so that the supporting tubes 41 are close to each other, thereby driving the fixing mechanism 4 to close and disconnect from the drainage board 2.

[0110] S6.3: Use a pulling device to pull the fixing mechanism 4 out of the soft soil.

[0111] In the present invention, the high-temperature liquid pump 200 is first connected to the multiple support tubes 41, and high-temperature liquid is introduced into the support tubes 41 to melt the low-temperature hot melt adhesive. Then, the outer rod 422 of the fixing mechanism 4 is pulled to retract the connecting rod 431 and the supporting foot rod 432, so that the support tubes 41 are close to each other, so as to drive the fixing mechanism 4 to retract and disconnect from the drainage board 2. Finally, the extraction device is used to extract the fixing mechanism 4 from the soft soil so that the fixing mechanism 4 can be reused.

[0112] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0113] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0114] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0115] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0116] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0117] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainage device, characterized in that: It includes a vacuum pump, a drain board and two vertical drain pipes arranged opposite to each other, the vacuum pump is connected to one of the drain pipes, the two vertical drain pipes are connected through the drain board, the length of the drain board is greater than the distance between the two vertical drain pipes, the drain board has a seepage surface for soil pore water to enter, and the drain board also has a drainage channel that can be connected to each of the vertical drain pipes.

2. The drainage device according to claim 1, characterized in that: It also includes a fixing mechanism for installing and fixing the drain plate. The drain plate is spirally arranged and wound on the fixing mechanism. The drain plate and the fixing mechanism are detachably installed.

3. The drainage device according to claim 2, characterized in that: The fixing mechanism comprises a supporting pipe connected to a high-temperature liquid pump, and the drain plate is adhered to the supporting pipe by a low-temperature hot-melt adhesive.

4. The drainage device according to claim 3, characterized in that: There are multiple support tubes, and the fixing mechanism also includes a driving assembly, a transmission assembly and multiple mounting parts. Each of the support tubes is connected to the mounting parts in a one-to-one manner. The multiple mounting parts are arranged at intervals in the circumferential direction of the transmission assembly. The transmission assembly is driven by the driving assembly to retract and expand, so as to drive the support tubes connected to each of the mounting parts to move closer to or away from each other.

5. The drainage device according to claim 4, characterized in that: The driving assembly includes an inner rod and an outer rod movably mounted on the inner rod, the extension directions of the inner rod and the outer rod are parallel to the extension direction of the support tube, the outer rod is provided with a plurality of elongated holes spaced apart in the circumference thereof, each of the elongated holes extending along the length direction of the outer rod, the transmission assembly includes a plurality of connecting rods and a plurality of supporting foot rods, one end of the connecting rod is hinged to the outer rod, and the other end is hinged to the corresponding mounting portion, one end of the supporting foot rod passes through the elongated hole and is hinged to the inner rod, and the other end is hinged to the connecting rod.

6. A soft soil reinforcement construction method, characterized in that: The following steps are involved: S1: Clean, level and seal the reinforcement groove in the area to be reinforced; S2: Obtaining the required number of drain boards to be installed, and determining multiple installation positions of the drain boards according to the required number of drain boards to be installed; S3: prefabricate a fixing mechanism and spread the fixing mechanism; S4: Assembling a vertical drain pipe, a drain plate and a fixing mechanism at one of the installation positions in the reinforcement groove; S5: backfilling some soft soil into the reinforcement groove; S6: After backfilling is completed, the fixing mechanism is disconnected from the drainage board; S7: Repeat steps S4 to S6 until all vertical drain pipes and drain boards are installed; S8: Perform sealing treatment on the surface of soft soil; S9: Connect the vacuum pump to each of the vertical drainage pipes, and start the vacuum pump to start vacuum preloading to extract the pore water in the soft soil to achieve soft soil reinforcement.

7. The soft soil reinforcement construction method according to claim 6, characterized in that: In step S2, it includes: S2.1: Obtain the three-dimensional size of the reinforcement groove and the drainage influence range of a single drainage board; S2.2: Determine the required number of drainage boards to be installed according to the three-dimensional dimensions of the reinforcement groove and the drainage influence range; S2.3: Use a theodolite and a steel ruler to mark lines and locate within the area to be reinforced according to the required installation quantity to determine multiple installation positions of the drainage board.

8. The soft soil reinforcement construction method according to claim 6, characterized in that: In step S3, it includes: S3.1: A plurality of elongated holes are provided on the outer rod at intervals along the circumference thereof; S3.2: Nesting the inner rod within the outer rod; S3.3: hinge one end of one of the connecting rods to the outer rod, and hinge the other end to the corresponding mounting portion; S3.4: hinge one end of the corresponding supporting foot rod to the connecting rod, and pass the other end through the long hole and hinge to the inner rod; S3.5: Repeat steps S3.3 to S3.4 until all connecting rods, mounting parts and supporting foot rods are installed; S3.6: Pushing the outer rod to open the connecting rod and the supporting foot rod, so that the mounting parts are away from each other; S3.7: Install each of the support tubes and the mounting parts in a one-to-one correspondence to achieve the expansion of the fixing mechanism.

9. The soft soil reinforcement construction method according to claim 8, characterized in that: In step S4, it includes: S4.1: inserting the vertical drain pipes at both ends of one of the installation positions in the reinforcement groove; S4.2: spirally wrap a drain board on the support pipe of the fixing mechanism with a pitch greater than twice the width of the drain board, adhere the drain board to the support pipe by low-temperature hot melt adhesive, and connect the two ends of the drain board to two vertical drain pipes respectively; S4.3: Wrap another drain board spirally around the support tube of the fixing mechanism with a pitch greater than twice the width of the drain board to form a double helix structure, adhere the drain board to the support tube with the low-temperature hot melt adhesive, and connect the two ends of the drain board to two vertical drain pipes respectively.

10. The soft soil reinforcement construction method according to claim 9, characterized in that: In step S6, it includes: S6.1: connecting the high-temperature liquid pump to the plurality of support tubes, and introducing high-temperature liquid into the support tubes to melt the low-temperature hot melt adhesive; S6.2: Pull the outer rod of the fixing mechanism to close the connecting rod and the supporting foot rod, so that the supporting tubes are close to each other, so as to drive the fixing mechanism to close and disconnect from the drainage board; S6.3: Use an extraction device to extract the fixing mechanism from the soft soil.

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