Sand discharge control device, sand pile creation system, and sand discharge control method

Abstract

To provide a sand discharge control device which can properly control the amount of sand to be discharged, in a construction method of creating a sand pile underground and compacting the ground.SOLUTION: A sand discharge control device 100 includes a storage part 120 in which construction pattern information is stored. The sand discharge control device 100 also includes a construction information acquisition part 111 for acquiring construction information at least including the information regarding the depth of a casing pipe and the amount of sand inputted in the casing pipe. Also, the sand discharge control device 100 includes a pattern determination part 112 for determining to which construction pattern the construction state corresponds out of a plurality of construction patterns based on the construction pattern information, the depth and the amount of sand. Furthermore, the sand discharge control device 100 includes: a control information generation part for generating control information; and a discharge control processing part 114 for controlling the in-pipe pressure and air discharge of the casing pipe based on the control information.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a sand discharge control device, a sand pile construction system, and a sand discharge control method. [Background technology]

[0002] In a conventional method for compacting the surrounding ground by constructing sand piles underground, a casing filled with granular material such as sand or crushed stone is driven to a predetermined depth, and a technique for appropriately discharging the material inside the casing into the ground has been proposed. Patent Document 1 discloses a method for discharging sand in a drive-back type compressed sand pile construction method. The sand discharging method disclosed in Patent Document 1 not only discharges sand by applying air pressure to the sand inside the casing, but also discharges sand efficiently by ejecting an air jet from the side of the tip of the casing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-308839 Summary of the Invention [Problem to be solved by the invention]

[0004] In a method of constructing sand piles underground to compact the ground, the amount of sand discharged from the casing needs to be adjusted appropriately depending on the sand material used and the ground conditions. Traditionally, skilled operators have controlled the amount of sand discharged by adjusting the pressure of the casing and the air jet. Therefore, there is a need for a device or system that can adjust the amount of sand discharged appropriately without relying on the skills of a skilled operator.

[0005] The present invention has been made in consideration of the problems inherent in the prior art, and an object of the present invention is to provide a sand discharge control device that can appropriately control the amount of sand discharged in a construction method in which sand piles are constructed underground to compact the ground. [Means for solving the problem]

[0006] A sand discharge control device according to an aspect of the present invention is a sand discharge control device that controls the discharge of sand for creating pillars in a construction method of compacting the ground by creating pillars underground, and is equipped with: a memory unit that stores construction pattern information indicating a plurality of construction patterns determined based on the depth of the vertical tip of the lower end of the casing pipe that penetrates the ground and the sand removal amount indicating the amount of sand discharged from the casing pipe; a construction information acquisition unit that acquires construction information used in the construction method, including information regarding at least the depth and the amount of sand that has been poured into the casing pipe; a pattern determination unit that determines which of a plurality of construction patterns the construction status corresponds to based on the construction pattern information, the depth, and the amount of sand; a control information generation unit that generates control information based on the results determined by the pattern determination unit; and a discharge control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information.

[0007] Another aspect of the present invention is a sand pile construction system comprising: a compaction pile construction device that compacts the ground by constructing pillars in the ground, a management instrument that acquires construction data used by the compaction pile construction device, and a sand discharge control device that controls the discharge of sand for constructing the pillars.The sand discharge control device has a memory unit that stores construction pattern information indicating a plurality of construction patterns determined based on the depth of the vertical tip of the lower end of the casing pipe that penetrates the ground and the sand removal amount, which indicates the amount of sand discharged from the casing pipe; a construction information acquisition unit that acquires construction information used by the compaction pile construction device, which includes information regarding at least the depth and the amount of sand charged into the casing pipe; a pattern determination unit that determines which of the plurality of construction patterns the construction status corresponds to based on the construction pattern information, the depth, and the amount of sand; a control information generation unit that generates control information based on the results determined by the pattern determination unit; and a discharge control processing unit that controls the pressure inside the casing pipe and the discharge of air based on the control information.

[0008] Another aspect of the present invention is a sand discharge control method that is executed by a computer and controls the discharge of sand for creating pillars in a construction method of compacting the ground by creating pillars underground. The method acquires construction information used in the construction method, which includes at least information regarding the depth of the lower end tip of the casing pipe that penetrates the ground in the vertical direction and the amount of sand that has been poured into the casing pipe, and determines which of the multiple construction patterns the construction status corresponds to based on construction pattern information indicating a multiple construction pattern defined based on the depth of the casing pipe and the sand removal amount indicating the amount of sand discharged from the casing pipe, and based on the depth and the amount of sand, generates control information based on the determined result, and controls the internal pressure of the casing pipe and the discharge of air based on the control information. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a sand discharge control device that can appropriately control the amount of sand discharged in a construction method in which sand piles are constructed underground to compact the ground. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing the configuration of a compaction pile construction device to which a sand discharge control device according to this embodiment is applied. [Figure 2] FIG. 1 is a diagram for explaining a compaction method using a compaction pile construction device to drive sand piles. [Figure 3A] This is a diagram to explain the timing of extracting and compacting the casing pipe when driving sand piles using a compaction pile construction device. [Figure 3B] This is a diagram to explain the changes in each data when driving a sand pile using a compaction pile construction device. [Figure 4] 1 is a block diagram showing the configuration of a sand discharge control device according to an embodiment of the present invention; [Figure 5] 2 is a block diagram showing the functional configuration of the sand discharge control device according to the present embodiment. FIG. [Figure 6] 10A and 10B are diagrams for explaining each pattern in the sand pile construction system according to this embodiment. [Figure 7A] FIG. 2 is a diagram showing an example of a display screen in the sand pile construction system according to the present embodiment. [Figure 7B] FIG. 2 is a diagram showing an example of a display screen in the sand pile construction system according to the present embodiment. [Figure 8] 4 is a flowchart showing an example of processing of the sand discharge control device according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] The sand discharge control device 100 and the sand pile construction system 10 according to this embodiment will be described in detail below with reference to the drawings. Note that the dimensional proportions in the drawings are exaggerated for the sake of explanation and may differ from the actual proportions.

[0012] (Configuration of sand pile construction system 10) 1 is a diagram for explaining a construction method to which the sand pile construction system 10 according to this embodiment is applied. The construction method to which the sand pile construction system 10 according to this embodiment is applied is a construction method in which the ground is compacted by constructing pillar-shaped objects in the ground using a compaction pile construction device 20.

[0013] The method of compacting the ground by constructing pillars underground corresponds to, for example, a sand compaction method or a static compaction method, in which granular material discharged into the ground using a casing is driven back to expand the diameter of the pile and compact the surrounding ground. The method may also be a press-in static compaction method or a compaction grouting method, in which a mixture of granular material with a superplasticizer and cement is pressed into the ground.

[0014] The compaction pile construction device 20 according to this embodiment is a construction machine including a hopper 30, a lifting device 31, a rotary drive device 32, and a casing pipe 33. The compaction pile construction device 20 also includes a sand discharge control device 100. Details of the sand discharge control device 100 will be described later.

[0015] The hopper 30 is provided at the upper end of the casing pipe 33 and is a portion for feeding granular material into the casing pipe 33. In this embodiment, the granular material is, for example, sand. The lifting device 31 has a lifting motor and a power transmission means for transmitting the rotational force of the lifting motor to the casing pipe 33, and raises and lowers the casing pipe 33 into the ground. The rotation drive device 32 has a rotation motor and is a mechanism for rotating the casing pipe 33 in a fixed direction.

[0016] The compaction pile construction device 20 penetrates a casing pipe 33 into the ground to a predetermined depth using a lifting device 31 and a rotary drive device 32. The compaction pile construction device 20 also discharges granular material from the lower end of the casing pipe 33, and compacts the discharged granular material by repeating the process of pulling out the casing pipe 33 and re-penetrating it.

[0017] The compaction pile construction device 20 is also equipped with a control instrument that collects construction data. The data collected by the control instrument is the depth (GL), the amount of sand (SL), and the internal pressure of the casing pipe 33. The depth is data that indicates the position of the lower end tip of the casing pipe 33 in the vertical direction. The depth is obtained by a depth meter (depth sensor) provided at the lower end tip of the casing pipe 33. The amount of sand indicates the amount of sand that has been poured into the casing pipe 33, and is indicated by the length from the lower end tip of the casing pipe 33. For example, the amount of sand is obtained by a sand level gauge.

[0018] The data collected by the control instruments also includes data showing the status (whether or not) of the jet, air supply, and exhaust. The jet is air sprayed by a device that sprays air into the inside of the tip of the casing pipe 33, and is used to loosen the sand at the tip and make it easier to remove.

[0019] FIG. 2 is a diagram illustrating the construction method. In step A in FIG. 2, the compaction pile construction device 20 places the casing pipe 33 in a predetermined position and pours a certain amount of sand into it via the hopper 30. In step B, the compaction pile construction device 20 drives the casing pipe 33 into the ground while rotating it using the rotary drive device 32. In step C, the compaction pile construction device 20 drives the casing pipe 33 to a predetermined depth. In step D, the compaction pile construction device 20 discharges the sand inside the casing pipe 33 while raising it to a specified height. In step E, the compaction pile construction device 20 drives the casing pipe 33 back and compacts the discharged sand and the surrounding ground. In step F, the compaction pile construction device 20 constructs a compaction pile using wave construction, which involves frequently repeating steps D and E to expand the diameter.

[0020] Figure 3A is a diagram for explaining the timing of extraction and compaction of the casing pipe 33 during sand pile driving using the compaction pile construction device 20. As shown in Figure 3A, the compaction pile construction device 20 extracts the casing pipe 33 vertically by 50 cm at a predetermined set pressure during the first "extraction" phase of one cycle of "extraction" and "compaction." During this "extraction" phase, the jet is turned on and off as shown in Figure 3A.

[0021] In the "compaction" phase, the sand is compacted vertically by 30 cm using the casing pipe 33. In the wave construction described above, this one cycle of "pulling" and "compaction" is repeated.

[0022] FIG. 3B is a diagram for explaining changes in each data during sand pile installation using the compaction pile construction device 20. In the example shown in FIG. 3B, after construction begins at time T1, the casing pipe 33 is inserted into the ground. Then, from time T2 onwards, the casing pipe 33 is "pulled out" and "compacted" (driven back), and the amount of sand (SL) decreases accordingly. Furthermore, around time T3 shown in FIG. 3B, sand is added, and the construction of "pulled out" and "compacted" the casing pipe 33 is repeated. Furthermore, jetting, air supply, and exhaust are performed as shown in FIG. 3B, and the pressure inside the pipe changes.

[0023] The sand discharge control device 100 provided in the sand pile construction system 10 according to this embodiment is a device that acquires construction data and controls the amount of sand discharged to an appropriate amount in the above-mentioned ground compaction method. Next, the details of this sand discharge control device 100 will be described.

[0024] (Configuration of sand discharge control device 100) Fig. 4 is a block diagram showing the configuration of the sand discharge control device 100 according to this embodiment. As shown in Fig. 4, the sand discharge control device 100 may be configured as a system including a general-purpose computer including a control unit 110 (CPU), a storage unit 120 (memory), an input / output IF 130 (Interface), and a communication IF 140. In this case, a computer program for causing the computer to function as the sand discharge control device 100 may be installed in the computer. By executing the computer program, the computer functions as multiple information processing circuits provided in the sand discharge control device 100.

[0025] The sand discharge control device 100 is provided at a predetermined location that can communicate with the compaction pile construction device 20. For example, the sand discharge control device 100 may be provided near the driver's seat of the compaction pile construction device 20.

[0026] In this embodiment, an example is shown in which software is used to realize the multiple information processing functions of the sand discharge control device 100. The sand discharge control device 100 functions as multiple information processing circuits provided in the sand discharge control device 100 by executing a computer program.

[0027] As another configuration, the sand discharge control device 100 can be configured with dedicated hardware for executing each information processing function, and the information processing function can be configured using a system LSI (Large Scale Integration) or the like. Also, the sand discharge control device 100 may configure a system with multiple information processing functions using individual hardware.

[0028] The control unit 110 operates based on a program (not shown) stored in the storage unit 120, and executes each function of the sand discharge control device 100. The program is not limited to being stored in the storage unit 120, and may be stored in, for example, a ROM (not shown) within the sand discharge control device 100.

[0029] As shown in FIG. 5, the storage unit 120 stores information stored in a construction information DB 121 (Data Base), a construction result information DB 122, and a construction pattern information DB 123 in the storage unit 120 as data.

[0030] Furthermore, as described above, the storage unit 120 may store programs for each function executed by the control unit 110. The information and programs stored in the storage unit 120 may be configured as physically or logically separated areas within a single storage device. Alternatively, the storage units 120 for each data may be configured to be provided in multiple physically different storage devices.

[0031] The input / output IF 130 is an interface for transmitting and receiving data between the sand discharge control device 100 and the outside. The input / output IF 130 may also be an interface for transmitting and receiving information to and from a user (construction manager). The input / output IF 130 includes, for example, an input IF and an output IF (not shown).

[0032] For example, the input / output IF130 is connected to the above-mentioned management instrument, and acquires information regarding depth, amount of sand, pressure inside the pipe, jet, air supply, and exhaust as construction data, and the acquired data is sent to the control unit 110.

[0033] Furthermore, the input IF in the input / output IF 130 has an interface function for inputting various information by the user (construction manager), and information may be input from outside the sand discharge control device 100. Information is input to the input IF by the user via, for example, a keyboard, mouse, touch panel, trackball, or voice recognition device connected to the sand discharge control device 100. Furthermore, the input IF can input information as a data input terminal for inputting data from an external storage device (not shown) or the like.

[0034] Furthermore, the output IF in the input / output IF 130 can display construction information, construction result information, etc. (see FIGS. 7A and 7B) described below on a display device (not shown) such as a monitor connected to the sand discharge control device 100. The display device is, for example, a display device, a projector device, etc.

[0035] The communication IF 140 is, for example, an interface that enables mutual communication between the sand discharge control device 100 and an external device.

[0036] (Functional configuration of sand discharge control device 100) Fig. 5 is a block diagram showing the functional configuration of the sand discharge control device 100 according to this embodiment. As shown in Fig. 5, the control unit 110 of the sand discharge control device 100 includes a construction information acquisition unit 111, a pattern determination unit 112, a control information generation unit 113, a discharge control processing unit 114, and a construction result acquisition unit 115 as functions.

[0037] The construction information acquisition unit 111 acquires construction information that is used in the method of compacting the ground using the compaction pile construction device 20, and that includes at least information regarding the depth (GL) of the tip of the lower end of the casing pipe 33 and the amount of sand (SL). Specifically, the construction information acquisition unit 111 acquires, via a management instrument, the depth of the tip of the casing pipe 33 and the amount of sand indicated by the height from the tip of the casing pipe 33. The construction information acquisition unit 111 also stores the acquired construction information in the construction information DB 121.

[0038] The pattern determination unit 112 determines which of a plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. The construction pattern information is information indicating a plurality of construction patterns determined based on the depth in the vertical direction of the lower end tip of the casing pipe 33 penetrating into the ground and the sand removal amount (ΔSL) indicating the amount of sand discharged from the casing pipe 33. The construction pattern information is also stored in advance in the construction pattern information DB 123 of the storage unit 120.

[0039] The pattern determination unit 112 determines the construction pattern based on the depth and sand volume acquired by the control instrument. The sand removal volume (ΔSL) is calculated as the difference between the previous sand volume and the current sand volume. A predetermined initial value (default value) is used as the sand removal volume (ΔSL) at the start of construction. For example, the initial value of the sand removal volume (ΔSL) may be 70 cm. The initial value of the sand removal volume (ΔSL) is not limited to 70 cm, and a predetermined value greater than or equal to 60 cm and less than 90 cm may be used.

[0040] FIG. 6 is a diagram for explaining each construction pattern of the construction pattern information in the sand pile construction system 10 according to this embodiment. In the example shown in FIG. 6, three divisions are defined for the depth, with thresholds of −5 m and −10 m. Four divisions are defined for the amount of sand removal, with first, second, and third thresholds. For example, the first, second, and third thresholds may be 90 cm, 60 cm, and 30 cm, respectively. The first, second, and third thresholds are not limited to 90 cm, 60 cm, and 30 cm, and values ​​greater than or less than 90 cm, 60 cm, and 30 cm may be applied.

[0041] In the example of Figure 6, "Pattern No. 1" indicates a pattern when the amount of sand removed is equal to or greater than the first threshold. "Pattern No. 2" indicates a pattern when the amount of sand removed is equal to or greater than the second threshold but less than the first threshold. "Pattern No. 3" indicates a pattern when the amount of sand removed is equal to or greater than the third threshold but less than the second threshold. "Pattern No. 4" indicates a pattern when the amount of sand removed is less than the third threshold. In this embodiment, "Pattern No. 2," shown in hatching in Figure 6, corresponds to a pattern appropriate for the amount of sand removed. The pattern appropriate for the amount of sand removed corresponds to the target construction pattern. The range of the predetermined threshold corresponds to a sand removal amount equal to or greater than the second threshold but less than the first threshold.

[0042] The depth and sand removal amount thresholds in the construction pattern information can be set to any value by the user (administrator).

[0043] The control information generator 113 generates control information based on the result of the determination made by the pattern determiner 112. Specifically, the control information generator 113 generates control information so that the amount of sand removal becomes an appropriate value at the corresponding depth. In this embodiment, the appropriate amount of sand removal corresponds to "Pattern No. 2" shown in Fig. 6. The construction pattern for this appropriate amount of sand removal corresponds to the target construction pattern.

[0044] That is, when the determination result is "Pattern No. 1" shown in Fig. 6, the control information generator 113 generates control information to reduce the sand removal amount (ΔSL) at the corresponding depth. For example, control information that reduces the sand removal amount (ΔSL) is to turn off the jet, stop the exhaust, stop the air supply, etc.

[0045] Furthermore, if the determination result is "Pattern No. 3" or "Pattern No. 4" shown in Fig. 6, the control information generator 113 generates control information to increase the sand removal amount (ΔSL) at the corresponding depth. For example, control information that increases the sand removal amount (ΔSL) may be turning on the jet, exhaust, or air supply.

[0046] Furthermore, if the determined result is "Pattern No. 2," which is an appropriate pattern shown in Figure 6, the control information generation unit 113 generates control information so that the current sand removal amount (ΔSL) can be maintained at the corresponding depth. For example, the control information generation unit 113 generates control information to maintain the current control information for jet, exhaust, and air supply as control information for maintaining the sand removal amount (ΔSL). Figure 7A is a diagram showing an example of control information for extraction and compaction.

[0047] The control information generated by the control information generator 113 may be configured such that, for example, control information corresponding to the depth and sand removal amount is stored in advance in the storage unit 120, and control information determined by the depth and sand removal amount is output. For example, in the example shown in Fig. 6, as shown in a table of three patterns for depth and four patterns for sand removal amount, control information corresponding to each of 3 x 4 = 12 construction patterns may be stored in advance in the storage unit 120. In other words, the control information generator 113 may generate control information by selecting and outputting control information corresponding to a construction pattern determined by the depth and sand removal amount.

[0048] The control information generating unit 113 may also generate control information based on information statistically determined from past construction data. This allows the sand discharge control device 100 to control the appropriate amount of sand discharge by using past data. For example, a total of 12 patterns (3 patterns of depth x 4 patterns of sand removal amount) may be stored in the storage unit 120 in advance based on information statistically determined from past construction data, and the control information may be output (generated) according to the depth and sand removal amount.

[0049] The control information generator 113 may also generate control information based on information obtained by machine learning using past construction data. This allows the sand discharge control device 100 to reflect more precise control that cannot be recognized from information obtained from data alone, making it possible to more appropriately control the amount of sand discharged.

[0050] Based on the control information, the discharge control processing unit 114 controls the pressure inside the casing pipe 33 and the discharge of air. More specifically, based on the control information generated by the control information generating unit 113, the discharge control processing unit 114 controls the jet, the air supply, and / or the exhaust.

[0051] The construction result acquisition unit 115 acquires the construction result. Specifically, the construction result acquisition unit 115 acquires information on how much sand has been removed during construction. In addition, the construction result acquisition unit 115 stores the acquired construction result in the construction result information DB 122.

[0052] The sand discharge control device 100 controls the next construction based on the construction results, thereby enabling the appropriate amount of sand to be removed. Also, the user (manager) of the sand pile construction system 10 can determine whether the construction is being carried out appropriately by checking the construction results.

[0053] 7B is a diagram showing the construction status based on the construction result acquired by the construction result acquisition unit 115. For example, by checking the construction status shown in this FIG. 7B, the user can determine whether or not the construction is being carried out appropriately.

[0054] (Outline of processing flow of sand discharge control device 100) Next, the processing flow in the sand discharge control device 100 will be shown using the flowchart shown in Figure 8. The series of operations of the sand discharge control device 100 shown in the flowchart of Figure 8 begins when the sand discharge control device 100 is started, and ends when work is completed. The processing in the flowchart shown in Figure 8 also ends when the power is turned off or an interrupt occurs to end the processing. In addition, in the explanation of the flowchart below, the same content as that described in the explanation of the sand pile construction system 10 and the sand discharge control device 100 above will be omitted or simplified.

[0055] In step S801, the construction information acquisition unit 111 acquires construction information used in the method of compacting the ground using the compaction pile construction device 20, including at least information regarding the depth (GL) of the tip of the casing pipe 33 and the amount of sand. The construction information acquisition unit 111 acquires the depth of the tip of the casing pipe 33 and the amount of sand via the management instrument. The construction information acquisition unit 111 also stores the acquired construction information in the construction information DB 121. Thereafter, the process proceeds to step S802.

[0056] In step S802, the pattern determination unit 112 determines which of a plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. The construction pattern information indicates a plurality of construction patterns determined by the depth and the amount of sand removal, and is information stored in advance in the storage unit 120. Then, the process proceeds to step S803.

[0057] In step S803, the control information generation unit 113 generates control information based on the result of the determination made by the pattern determination unit 112. Specifically, the control information generation unit 113 generates control information so that the amount of sand removal becomes an appropriate value. For example, the control information generation unit 113 may generate control information by a process of selecting and outputting control information corresponding to an operation pattern determined by the depth and amount of sand removal. In this embodiment, the appropriate amount of sand removal corresponds to "Pattern No. 2" shown in Figure 6. The operation pattern for this appropriate amount of sand removal corresponds to the target operation pattern. Then, the process proceeds to step S804.

[0058] In step S804, the discharge control processing unit 114 controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information. More specifically, the discharge control processing unit 114 controls the jet, the air supply, and / or the exhaust based on the control information generated by the control information generating unit 113. Thereafter, the process proceeds to step S805.

[0059] In step S805, the construction result acquisition unit 115 acquires the construction result. Specifically, the construction result acquisition unit 115 acquires information on how much sand has been removed during construction. The construction result acquisition unit 115 also stores the acquired construction result in the construction result information DB 122. Thereafter, the process proceeds to step S806.

[0060] In step S806, the control unit 110 determines whether the application processing has ended. If the control unit 110 determines in step S806 that the application processing has ended (step S806: YES), the processing ends. On the other hand, if the control unit 110 determines in step S806 that the application processing has not ended (step S806: NO), the processing returns to step S802, and the processing from step S802 is repeated.

[0061] As described above, the sand discharge control device 100 controls the discharge of sand to create pillars in a construction method for compacting the ground by creating pillars underground. The sand discharge control device 100 includes a memory unit 120 that stores construction pattern information. The construction pattern information indicates multiple construction patterns determined based on the vertical depth of the lower end of the casing pipe 33 that penetrates the ground and the sand removal volume, which indicates the amount of sand discharged from the casing pipe 33. The sand discharge control device 100 also includes a construction information acquisition unit 111 that acquires construction information used in the construction method, including at least information regarding the depth and the amount of sand charged into the casing pipe 33. The sand discharge control device 100 also includes a pattern determination unit 112 that determines which of multiple construction patterns the construction status corresponds to based on the construction pattern information, the depth, and the amount of sand. The sand discharge control device 100 also includes a control information generation unit 113 that generates control information based on the results determined by the pattern determination unit 112. The sand discharge control device 100 also includes a discharge control processing unit 114 that controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0062] As a result, the sand discharge control device 100 according to this embodiment can appropriately control the amount of sand discharged in a construction method in which sand piles are constructed underground to compact the ground.

[0063] Furthermore, among the multiple construction patterns of the sand discharge control device 100 according to this embodiment, a construction pattern in which the amount of sand removed is within a predetermined threshold range may be determined as a target construction pattern. Furthermore, the control information generating unit 113 may generate control information that makes the construction pattern the target construction pattern. This enables the sand discharge control device 100 to appropriately control the amount of sand discharged.

[0064] Furthermore, the control information generating unit 113 of the sand discharge control device 100 according to this embodiment may generate control information based on information statistically determined from past construction data. This allows the sand discharge control device 100 to use past data to more appropriately control the amount of sand discharged.

[0065] Furthermore, the control information generating unit 113 of the sand discharge control device 100 according to this embodiment may generate control information based on information obtained by machine learning using past construction data. By using the information obtained by machine learning, the sand discharge control device 100 can thereby reflect more precise control that cannot be recognized by information obtained from data alone, making it possible to control the amount of sand discharged more appropriately.

[0066] Furthermore, the control information of the sand discharge control device 100 according to this embodiment may include information regarding the internal pressure, jet, air supply, and / or exhaust of the casing pipe 33. This allows the sand discharge control device 100 to more precisely control the amount of sand discharged, thereby enabling it to appropriately control the amount of sand discharged.

[0067] (Other embodiments) Although the embodiments have been described in detail with reference to the drawings, the present embodiments are not limited to the contents described in the above embodiments. Furthermore, the components described above include those that can be easily imagined by a person skilled in the art and those that are substantially the same. Furthermore, the configurations described above can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the configurations can be made without departing from the spirit of the embodiments.

[0068] Although the sand discharge control device 100 according to the above embodiment has been described for control when performing wave construction, the sand discharge control device 100 is not limited to this configuration. For example, the sand discharge control device 100 may be applied to processes such as pre-construction preparation, preparation for adding sand, and / or drainage. Note that drainage is a construction process performed on shallow underground sections, and corresponds to a process of discharging sand without performing backfilling. For example, even in the case of pre-construction and drainage, control information may be generated based on construction information acquired by the construction information acquisition unit 111. Note that in the pre-construction and drainage processes, the construction information acquired by the construction information acquisition unit 111 is not limited to depth and sand volume, but may also include information on the internal pressure of the casing pipe 33 and whether or not air has been discharged. This allows the sand discharge control device 100 to appropriately control the amount of sand discharged for pre-construction and drainage processes other than wave construction, thereby enabling appropriate sand discharge throughout the construction process.

[0069] Furthermore, the scope of this embodiment includes a computer program (sand discharge control program) that causes a computer to execute the processing (sand discharge control method) in the sand discharge control device 100 described above, and a computer-readable recording medium on which the program is recorded. Any type of computer-readable recording medium may be used. Furthermore, the computer program is not limited to being recorded on the recording medium described above, but may be transmitted via a telecommunications line, a wireless or wired communication line, a network such as the Internet, or the like.

[0070] (Actions, effects, etc.) The effects of this embodiment will be described below.

[0071] (1) The sand discharge control device 100 according to the first aspect of this embodiment controls the discharge of sand used to create pillars in a construction method for compacting the ground by creating pillars underground. The sand discharge control device 100 includes a memory unit 120 that stores construction pattern information. The construction pattern information indicates a plurality of construction patterns determined based on the vertical depth of the lower end of the casing pipe 33 penetrating the ground and the sand removal volume, which indicates the amount of sand discharged from the casing pipe 33. The sand discharge control device 100 also includes a construction information acquisition unit 111 that acquires construction information used in the construction method, including at least information about the depth and the amount of sand charged into the casing pipe 33. The sand discharge control device 100 also includes a pattern determination unit 112 that determines which of a plurality of construction patterns the construction status corresponds to based on the construction pattern information, the depth, and the amount of sand. The sand discharge control device 100 also includes a control information generation unit 113 that generates control information based on the results determined by the pattern determination unit 112. The sand discharge control device 100 also includes a discharge control processing unit 114 that controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0072] With this configuration, the sand discharge control device 100 can appropriately control the amount of sand discharged in a construction method in which sand piles are constructed underground to compact the ground.

[0073] (2) Of the multiple construction patterns of the sand discharge control device 100 according to the second aspect of this embodiment, a construction pattern in which the amount of sand removal is within a predetermined threshold range may be determined as a target construction pattern. Also, the control information generating unit 113 may generate control information such that the construction pattern becomes the target construction pattern.

[0074] With this configuration, the sand discharge control device 100 can appropriately control the amount of sand to be discharged.

[0075] (3) The control information generating unit 113 of the sand discharge control device 100 according to the third aspect of this embodiment may generate the control information based on information statistically determined from past construction data.

[0076] With this configuration, the sand discharge control device 100 can control the amount of sand discharged more appropriately by using past data.

[0077] (4) The control information generation unit 113 of the sand discharge control device 100 relating to the fourth aspect of this embodiment may generate control information based on information obtained by machine learning using past construction data.

[0078] With this configuration, the sand discharge control device 100 can use information obtained through machine learning to reflect more precise control that cannot be recognized from information obtained from data alone, making it possible to control the amount of sand discharged more appropriately.

[0079] (5) The control information of the sand discharge control device 100 according to the fifth aspect of this embodiment may include information about the internal pressure, jet, air supply, and / or exhaust of the casing pipe 33.

[0080] With this configuration, the sand discharge control device 100 can more precisely control the amount of sand discharged, and can appropriately control the amount of sand to be discharged.

[0081] (6) A sand pile construction system 10 according to a sixth aspect of this embodiment includes a compaction pile construction device 20 that compacts the ground by constructing pillars in the ground. The sand pile construction system 10 also includes a management instrument that acquires construction data used by the compaction pile construction device 20. The sand pile construction system 10 also includes a sand discharge control device 100 that controls the discharge of sand used to construct the pillars. The sand discharge control device 100 has a memory unit 120 that stores construction pattern information. The construction pattern information indicates a plurality of construction patterns determined based on the vertical depth of the lower end of the casing pipe 33 that penetrates the ground and the sand removal volume, which indicates the amount of sand discharged from the casing pipe 33. The sand discharge control device 100 also has a construction information acquisition unit 111 that acquires construction information used by the compaction pile construction device 20, including at least information regarding the depth and the amount of sand introduced into the casing pipe 33. The sand discharge control device 100 also has a pattern determination unit 112 that determines which of a plurality of construction patterns the construction status corresponds to based on the construction pattern information, depth, and amount of sand. The sand discharge control device 100 also has a control information generation unit 113 that generates control information based on the result determined by the pattern determination unit 112. The sand discharge control device 100 also has a discharge control processing unit 114 that controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0082] With this configuration, the sand pile construction system 10 can appropriately control the amount of sand discharged in a construction method in which sand piles are constructed underground and the ground is compacted.

[0083] (7) A seventh aspect of the present embodiment provides a sand discharge control method executed by a computer, which controls the discharge of sand used to create underground pillars in a construction method for compacting the ground by creating underground pillars. The sand discharge control method acquires construction information used in the construction method, including at least information regarding the vertical depth of the lower end of the casing pipe 33 penetrating the ground and the amount of sand charged into the casing pipe 33. The sand discharge control method also determines which of multiple construction patterns the construction status corresponds to based on construction pattern information, the depth, and the amount of sand. The construction pattern information indicates multiple construction patterns determined based on the depth of the casing pipe 33 and the sand removal volume, which indicates the amount of sand discharged from the casing pipe 33. The sand discharge control method also generates control information based on the determination result. The sand discharge control method also controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0084] With this configuration, the sand discharge control method can appropriately control the amount of sand discharged in a construction method in which sand piles are constructed underground to compact the ground. [Explanation of symbols]

[0085] 10 Sand pile construction system 20 Compaction pile construction equipment 30 Hopper 31 Lifting device 32 Rotational drive unit 33 Casing pipe 100 Sand discharge control device 110 control section 111 Construction Information Acquisition Department 112 Pattern determination unit 113 Control information generation unit 114 Emission control processing unit 115 Construction result acquisition department 120 Storage section 121 Construction information DB 122 Construction result information DB 123 Construction pattern information DB 130 Input / Output Interface 140 Communication Interface

Claims

1. A sand discharge control device for controlling the discharge of sand for constructing pillars in a method of compacting the ground by constructing pillars underground, A storage unit that stores construction pattern information indicating a plurality of construction patterns determined based on the depth of the lower end of the casing pipe in the vertical direction that penetrates the ground and the sand removal amount that indicates the amount of sand discharged from the casing pipe; A construction information acquisition unit that acquires construction information used in the construction method, the construction information including at least information regarding the depth and the amount of sand poured into the casing pipe; A pattern determination unit that determines which of the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand; a control information generating unit that generates control information based on the result of the determination made by the pattern determining unit; a discharge control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information; A sand discharge control device equipped with:

2. Among the plurality of construction patterns, the construction pattern in which the amount of sand removal is within a predetermined threshold range is determined as a target construction pattern, The sand discharge control device according to claim 1 , wherein the control information generating unit generates the control information such that the construction pattern becomes the target construction pattern.

3. The sand discharge control device according to claim 2 , wherein the control information generating unit generates the control information based on information statistically determined from past construction data.

4. The sand discharge control device according to claim 2 , wherein the control information generating unit generates the control information based on information obtained by machine learning using past construction data.

5. The sand discharge control device according to any one of claims 1 to 4, wherein the control information includes information regarding the internal pressure, jet, air supply, and / or exhaust related to the casing pipe.

6. a compaction pile construction device that compacts the ground by constructing pillar-shaped objects in the ground; a management instrument for acquiring construction data used in the compaction pile construction device; A sand pile construction system comprising: a sand discharge control device that controls the discharge of sand for constructing the pillars; The sand discharge control device includes: A storage unit that stores construction pattern information indicating a plurality of construction patterns determined based on the depth of the lower end of the casing pipe in the vertical direction that penetrates the ground and the sand removal amount that indicates the amount of sand discharged from the casing pipe; A construction information acquisition unit that acquires construction information used in the compaction pile construction device, the construction information including at least information regarding the depth and the amount of sand poured into the casing pipe; A pattern determination unit that determines which of the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand; a control information generating unit that generates control information based on the result of the determination made by the pattern determining unit; a discharge control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information; A sand pile construction system with

7. A sand discharge control method executed by a computer in a construction method for compacting ground by constructing pillars in the ground, the method controlling the discharge of sand for constructing the pillars, Acquire construction information used in the construction method, the construction information including at least information regarding the depth of the lower end tip of the casing pipe penetrating into the ground in the vertical direction and the amount of sand charged into the casing pipe; determining which of the plurality of construction patterns the construction state corresponds to based on construction pattern information indicating a plurality of construction patterns determined based on the depth of the casing pipe and the sand removal amount indicating the amount of sand discharged from the casing pipe, and based on the depth and the amount of sand; generating control information based on the determined result; A sand discharge control method for controlling the internal pressure of the casing pipe and the discharge of air based on the control information.

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