Method and apparatus for estimating land formation information

Abstract

To provide a creation information estimation method capable of easily estimating a relationship between jet energy and an improvement diameter in a solidification improvement ground in a deep mixing treatment method.SOLUTION: The construction information estimation method acquires construction information including a flow rate jetted from a nozzle, a pressure at the nozzle, and a time required for constructing an improved column to a predetermined height. Further, the construction information estimation method acquires observation information including information on the observed jet energy and the diameter of the observed improved column observed in the construction when the nozzle is at the center of the improved column. Further, the creation information estimation method calculates, based on the construction information and the observation information, observation relation information indicating a relation between observation jet energy required for a construction method in a case where the nozzle is at the center of the improved pole and a diameter of the observed improved pole. Further, the creation information estimation method calculates estimated relationship information indicating a relationship between the estimated jet energy and the diameter of the estimated improved pole based on the information on the ratio of the jet energy and the observation relationship information.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a land development information estimation method and a land development information estimation device. [Background technology]

[0002] Conventionally, techniques have been proposed for evaluating the finished shape of solidified and improved ground in deep mixing treatment methods. Patent Document 1 discloses a method and system for evaluating the finished shape of solidified and improved ground. The method disclosed in Patent Document 1 involves spraying a reagent on the solidified and improved ground and evaluating the finished shape using a colored image of the solidified and improved ground captured by a camera. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-107219 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of solidified and improved ground using the deep mixing method, increasing the diameter of the high-pressure jet requires a large amount of jet energy. For example, by placing the high-pressure jet nozzle away from the center of the improvement pillar (for example, at the tip of the mixing blade of the deep mixing method), the diameter of the improved ground can be increased with less energy. Here, in the case of a typical high-pressure jet mixing method in which the nozzle is located near the center of the improvement pillar, it is possible to estimate the relationship between the jet energy and the diameter of the improved ground by referring to existing literature. However, when the nozzle is not located at the center, it is difficult to provide information for estimating the relationship between the jet energy and the diameter of the improved ground prior to construction, for example, using the evaluation method disclosed in Patent Document 1.

[0005] The present invention has been made in consideration of the problems inherent in the prior art. An object of the present invention is to provide a method for estimating land development information that can easily estimate the relationship between the jet energy and the improved diameter of solidified and improved ground in deep mixing treatment methods. [Means for solving the problem]

[0006] A construction information estimation method according to an embodiment of the present invention is a construction information estimation method that is executed by a computer and estimates information related to the construction of an improvement pillar in a deep mixing process, and includes: acquiring construction information including the flow rate of the jet from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height; acquiring observation information including information about the observed jet energy observed during construction when the nozzle is at the center of the improvement pillar and the diameter of the observed improvement pillar; calculating, based on the construction information and the observation information, observed relationship information indicating the relationship between the observed jet energy required for the construction method when the nozzle is at the center of the improvement pillar and the diameter of the observed improvement pillar; and calculating estimated relationship information indicating the relationship between the estimated jet energy and the diameter of the estimated improvement pillar based on the observation relationship information and information about the jet energy ratio, which is the jet energy required for the construction method when the nozzle is not at the center of the improvement pillar divided by the observed jet energy.

[0007] Another aspect of the present invention is a construction information estimation method that is executed by a computer and estimates information related to the construction of an improvement pillar in a deep mixing process.The method acquires construction information including the flow rate of the jet from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height, acquires observation information including information about the observed jet energy observed during construction when the nozzle is at a predetermined position from the center of the improvement pillar and the diameter of the observed improvement pillar, calculates observation relationship information based on the construction information and the observation information, which indicates the relationship between the observed jet energy required for the construction method when the nozzle is at a predetermined position from the center of the improvement pillar and the diameter of the observed improvement pillar, and calculates estimated relationship information based on the observation relationship information and information about the jet energy ratio, which is the jet energy required for the construction method when the nozzle is not at the center of the improvement pillar divided by the observed jet energy.

[0008] A construction information estimation device according to another aspect of the present invention is a construction information estimation device that estimates information related to the construction of an improvement pillar in a deep mixing process, and is equipped with: a construction information acquisition unit that acquires construction information including the flow rate of the jet from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height; an observation information acquisition unit that acquires observation information including information about the observed jet energy observed during construction when the nozzle is at the center of the improvement pillar and the diameter of the observed improvement pillar; an observation relationship information calculation unit that calculates observation relationship information indicating the relationship between the observed jet energy required for the construction method when the nozzle is at the center of the improvement pillar and the diameter of the observed improvement pillar based on the construction information and the observation information; and an estimated relationship information calculation unit that calculates estimated relationship information indicating the relationship between the estimated jet energy and the diameter of the estimated improvement pillar based on the observation relationship information and information about the jet energy ratio, which is the value obtained by dividing the jet energy required for the construction method when the nozzle is not at the center of the improvement pillar by the observed jet energy. [Effects of the Invention]

[0009] According to the present invention, a construction information estimation method can be provided that can easily estimate the relationship between jet energy and improvement diameter in solidified and improved ground using a deep mixing treatment method. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram for explaining construction to which the construction information estimation device according to this embodiment is applied. [Figure 2] 1 is a diagram showing an underground cross section resulting from construction to which the construction information estimation device according to this embodiment is applied. [Figure 3] 1 is a block diagram showing the configuration of a construction information estimation device according to an embodiment of the present invention. [Figure 4] 1 is a block diagram showing the functional configuration of a construction information estimation device according to an embodiment of the present invention; [Figure 5] This is a diagram showing the relationship between the jet energy and the diameter of the improvement pillar to which the development information estimation device of this embodiment is applied. [Figure 6] This is a diagram showing the relationship between the jet energy and the diameter of the improvement pillar to which the development information estimation device of this embodiment is applied. [Figure 7] A diagram showing the relationship between the nozzle position and the jet energy ratio in construction to which the construction information estimation device of this embodiment is applied. [Figure 8] A diagram showing the relationship between the jet energy and estimated development diameter due to construction using the development information estimation device of this embodiment. [Figure 9] A diagram showing the relationship between the jet energy and estimated development diameter due to construction using the development information estimation device of this embodiment. [Figure 10] A diagram showing the relationship between the jet energy and estimated development diameter due to construction using the development information estimation device of this embodiment. [Figure 11] 10 is a flowchart illustrating an example of processing in a construction information estimation method according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] The construction information estimation device 100 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] 1 and 2 are diagrams for explaining construction to which the construction information estimation device 100 according to this embodiment is applied. The construction information estimation device 100 according to this embodiment is applied to solidified and improved ground in a deep mixing treatment method. In the example shown in FIG. 1, an improved pillar is constructed by using a solidification material jetted from a nozzle of an agitator blade 20 installed vertically below the agitator shaft 10. In this specification, the nozzle is provided at the tip of the agitator blade 20 and corresponds to the part that ejects the solidification material.

[0013] For example, in the case of solidified and improved ground using the deep mixing method, increasing the diameter of the high-pressure jet requires a large jet of energy. Therefore, as shown in Figure 1, by installing the high-pressure jet nozzle away from the center of the improvement pillar (for example, at the tip of the agitator blade 20 of the deep mixing method), it is possible to make the improvement pillar larger with less energy.

[0014] The construction information estimation device 100 and construction information estimation method of this embodiment formulate the relationship between the improvement pillar (improvement diameter) created by the jet, the jet energy, and the nozzle position, making it possible to easily estimate it as construction information.

[0015] Next, the relationship between the improved diameter, the jet energy, and the nozzle position estimated by the development information estimation device 100 according to this embodiment will be described.

[0016] In the case of double-pipe high-pressure jetting, taking into account the nozzle position, the relationship between the improvement diameter and jet energy can be expressed by the following formula (1): where Q0 is the nozzle jet flow rate, P0 is the nozzle pump pressure, T is the time required to create an improvement pillar of height H, and E g indicates the energy required to cut a unit volume of soil. cis the length of the initial jet section, α is the angle between the nozzle and the horizontal plane, R is the radius of the improved column, x n indicates the distance from the center of the nozzle.

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[0017] The above formula (1) can be derived as shown below.

[0018] First, jet energy is expressed as the product of flow rate, pressure, and time. In the case of double-pipe high-pressure jetting, the jet pressure is proportional to the ratio lc / l of the initial section length of the jet to the distance from the nozzle. In this case, the energy E injected into the soil located at a radius x from the center of the improved pillar during an infinitesimal time Δt is J is expressed as in equation (2). This equation (2) also takes into account the angle of the injection nozzle relative to the horizontal plane. Here, P x is the jet pressure at radius x, P0 is the pressure at the nozzle, x n is the distance from the center of the nozzle, and α is the angle that the nozzle makes with the horizontal plane.

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[0019] Assuming a construction method in which the nozzle is raised by a height H in a given time, the height of the soil that the jet must cut is equal to H (see Figure 1). If we assume that the jet cuts a cylindrical surface little by little, the surface cut by the jet reaching a radius x from the center is 2πxH (2πRH in Figure 2). Assuming that this soil with an area of ​​2πxH is cut by a thickness Δx in Δt, the required energy E C is expressed by the following equation (3): g indicates the energy required to cut a unit volume of soil.

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[0020] By connecting EJ and EC in the above formulas (2) and (3) with an equal sign, the following formulas (4) and (5) are derived.

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[0021] Here, assuming that a cylinder of radius R and height H is constructed for time T, integrating both sides of the above equation (5) leads to the following equations (6) and (7). In equation (7), A is expressed as (2πHE g The formula "(1) / lc" corresponds to the above formula (1).

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[0022] The above formula (7) is based on the radius R and the distance x from the center of the nozzle. n This shows how the required jet energy changes when the nozzle is centered (x n = 0), the jet energy is proportional to the cube of the radius R, as shown in the following equations (8) and (9).

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[0023] Also, x n =x n and x n When x = 0, the energy ratio is as shown in the following equation (10), n If the required energy for =0 is known, it becomes possible to estimate the required energy at any nozzle position.

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[0024] The formula for calculating the energy ratio according to this embodiment is x where the nozzle is at the center of the improved column. n = 0. For example, the formula for calculating the energy ratio can be calculated even when the nozzle is at a predetermined position from the center of the improved column. For example, x n =x n and x n The energy ratio for the case of =r is as shown in the following equation (11), and x n If the required energy for =r is known, it is possible to estimate the required energy at any nozzle position, where r is the specified length from the center of the improved column.

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[0025] (Configuration of construction information estimation device 100) Next, the configuration of the development information estimation device 100 according to this embodiment will be described. FIG. 3 is a block diagram showing the configuration of the development information estimation device 100 according to this embodiment. As shown in FIG. 3, the development information estimation device 100 may be configured as a system equipped with 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 development information estimation device 100 may be installed in the computer. By executing the computer program, the computer functions as multiple information processing circuits equipped in the development information estimation device 100.

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

[0027] Alternatively, the construction information estimation device 100 may be configured such that dedicated hardware is provided for executing each information processing function, and the information processing function is configured using a system LSI (Large Scale Integration), etc. The construction information estimation device 100 may also configure a system in which multiple information processing functions are implemented using individual hardware.

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

[0029] As shown in FIG. 4, the storage unit 120 stores information stored in a construction information DB 121 and an observation information DB 122 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 construction information estimation 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] 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 construction information estimation 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 construction information estimation 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.

[0033] Furthermore, the output IF in the input / output IF 130 can display construction information, observation information, etc., which will be described later, on a display device (not shown), such as a monitor, connected to the construction information estimation device 100. The display device is, for example, a display device, a projector device, etc.

[0034] The communication IF 140 is, for example, an interface that enables mutual communication between the construction information estimation device 100 and an external device.

[0035] (Functional configuration of the construction information estimation device 100) Fig. 4 is a block diagram showing the functional configuration of the construction information estimation device 100 according to this embodiment. As shown in Fig. 4, the control unit 110 of the construction information estimation device 100 includes, as functions, a construction information acquisition unit 111, an observation information acquisition unit 112, an observation relationship information calculation unit 113, and an estimated relationship information calculation unit 114.

[0036] The construction information acquisition unit 111 acquires construction information including the flow rate Q0 jetted from the nozzle used in construction, the pressure P0 at the nozzle, and the time T required to build an improved pillar to a specified height. The construction information may also include the length lc of the initial jet section and the angle α that the nozzle makes with the horizontal plane. The construction information acquisition unit 111 stores the acquired construction information in the construction information DB 121.

[0037] The observation information acquisition unit 112 acquires observation information observed on the solidified improved ground during actual deep mixing treatment. Specifically, the observation information acquisition unit 112 acquires observation information including information regarding the observed jet energy observed during construction when the nozzle is at the center of the improvement pillar and the diameter of the observed improvement pillar. In this specification, the information observed during actual construction when the nozzle is at the center of the improvement pillar is referred to as the observed jet energy. Furthermore, the information observed during actual construction when the nozzle is at the center of the improvement pillar is referred to as the diameter of the observed improvement pillar.

[0038] The observation information may be, for example, information stored in advance in the observation information DB 122 by a user. FIG. 5 is a diagram showing the relationship between the observed jet energy per meter of height observed during construction and the diameter 2R of the observation improvement pillar. FIG. 6 shows detailed data used in the diagram shown in FIG. 5. In FIG. 5, the observation information includes information on sandy soil indicated by black circles and information on clayey soil indicated by white circles. In this embodiment, the observation information acquisition unit 112 acquires, for example, the data indicated by black circles and white circles shown in FIG. 5 stored in the observation information DB 122 as observation information.

[0039] The observation relationship information calculation unit 113 calculates observation relationship information indicating the relationship between the observation jet energy required for the construction method when the nozzle is at the center of the improvement pillar and the diameter of the observation improvement pillar based on the construction information and the observation information.

[0040] In the example shown in Figure 5, the relationship between the observed jet energy of sandy soil and clayey soil and the diameter of the observation improvement pillar can be expressed by the following equations (12) and (13), respectively, based on the observation information shown in Figure 5 and the above equations (8) and (9). That is, the observed relationship information is expressed by the following equation (12) when the soil to be worked on is sandy soil, and by the following equation (13) when it is clayey soil.

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[0041] That is, in the example shown in FIG. 5, observation-related information is shown for clayey soil indicated by a broken line and sandy soil indicated by a solid line.

[0042] The estimated relationship information calculation unit 114 calculates estimated relationship information indicating the relationship between the estimated jet energy and the estimated diameter of the improved pillar based on the observed relationship information and information related to the jet energy ratio. In this embodiment, the jet energy ratio is the value obtained by dividing the jet energy required in a construction method when the nozzle is not at the center of the improved pillar by the observed jet energy.

[0043] The information about the jet energy ratio is given by the above formula (10). Figure 7 shows the relationship between the distance x of the nozzle from the center of the improved column and the radius of the improved column for formula (10) when the radius is 0.8 m, 0.9 m, 1.0 m, and 1.1 m. n FIG. 10 is a graph showing the relationship between the ratio of the jet energy and the temperature.

[0044] For example, the distance x from the center of the nozzle improvement column shown in Equation (10) and Figure 7 n and the jet energy ratio may be information that is stored in advance in the storage unit 120. Alternatively, the information may be information that is calculated based on the observation information acquired by the observation information acquisition unit 112 and stored in the observation information DB 122.

[0045] Figure 8 shows the nozzle position x n This figure shows the relationship between the estimated jet energy and the estimated diameter of the improved pillar (2R) when the depth is 0.6m and 0.8m. Figure 9 shows data from an experiment conducted to confirm whether the estimated line in Figure 8 is correct. Figure 10 is an enlarged graph of the graph in Figure 8, showing the jet energy range from 0 to 30,000 for sandy soil.

[0046] In Figure 8, the observed relationship information for sandy soil and clayey soil is shown by a solid line, and the estimated relationship information is shown by a dashed line. Based on the estimated relationship information calculated by the estimated relationship information calculation unit 114 as shown in Figures 8 to 10, the user (construction manager) can easily estimate the relationship between the jet energy and the improvement diameter as construction information for the solidified and improved ground in the deep mixing treatment method.

[0047] For example, in the example shown in FIG. 10, the nozzle position is x n = 0.8m and the diameter 2R of the improved column is 2.0m, the estimated jet energy is approximately 3000 (kJ / m). In this case, if the improved diameter is insufficient and the desired diameter 2R of the improved column is desired to be 2.5m, it can be seen that the desired diameter can be secured by increasing the jet energy to approximately 8000 (kJ / m). Similarly, if it is found in the actual construction that the improved diameter is too large, it can be seen how much the jet energy needs to be reduced to secure the desired diameter.

[0048] (Outline of processing flow of construction information estimation device 100) Next, the flow of processing in the construction information estimation device 100 is shown using the flowchart shown in Figure 11. The series of operations of the construction information estimation device 100 shown in the flowchart in Figure 11 begins when the construction information estimation device 100 is started, and ends when work is completed. The processing in the flowchart shown in Figure 11 also ends when the power is turned off or an interrupt occurs to end the processing. In addition, in the following explanation of the flowchart, content that is the same as that described in the explanation of the construction information estimation device 100 above will be omitted or simplified.

[0049] In step S1101, the construction information acquisition unit 111 acquires construction information including the flow rate Q0 jetted from the nozzle used for construction, the pressure P0 at the nozzle, and the time T required to build an improved pillar to a specified height. The construction information may also include the length lc of the initial jet section and the angle α that the nozzle makes with the horizontal plane. The construction information acquisition unit 111 stores the acquired construction information in the construction information DB 121. Then, the process proceeds to step S1102.

[0050] In step S1102, the observation information acquisition unit 112 acquires observation information observed on the solidified and improved ground during actual deep mixing treatment. Specifically, the observation information acquisition unit 112 acquires observation information including information regarding the observed jet energy observed during construction when the nozzle is located at the center of the improvement pillar and the diameter of the observation improvement pillar. In this specification, the observed jet energy refers to the information observed during actual construction when the nozzle is located at the center of the improvement pillar. Furthermore, the diameter of the improvement pillar observed during actual construction when the nozzle is located at the center of the improvement pillar refers to the diameter of the observation improvement pillar. Furthermore, the observation information may be stored in advance in the observation information DB 122 by a user, for example. In this embodiment, the observation information acquisition unit 112 acquires, for example, the data indicated by the black and white circles shown in FIG. 5 stored in the observation information DB 122 as observation information. Then, the process proceeds to step S1103.

[0051] In step S1103, the observation-related information calculation unit 113 calculates observation-related information indicating the relationship between the observation jet energy required for the construction method when the nozzle is located at the center of the improvement pillar and the diameter of the observation improvement pillar, based on the construction information and the observation information. Then, the process proceeds to step S1104.

[0052] In step S1104, the estimated relationship information calculation unit 114 calculates estimated relationship information indicating the relationship between the estimated jet energy and the estimated diameter of the improved pillar based on the observed relationship information and information related to the jet energy ratio. In this embodiment, the jet energy ratio is the value obtained by dividing the jet energy required in a construction method when the nozzle is not at the center of the improved pillar by the observed jet energy. Information related to the jet energy ratio is shown in the above formula (10) and in Figure 7. Furthermore, the estimated relationship information is, for example, the information shown by the dashed line in Figure 8. The processing then ends.

[0053] As described above, the construction information estimation method according to this embodiment is a computer-implemented method for estimating information related to the construction of an improvement pillar during deep mixing. The construction information estimation method acquires construction information, including the flow rate of water jetted from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height. The construction information estimation method also acquires observation information, including information about the observed jet energy observed during construction when the nozzle is located at the center of the improvement pillar and the diameter of the observed improvement pillar. Based on the construction information and the observation information, the construction information estimation method also calculates observed relationship information indicating the relationship between the observed jet energy required for the construction method when the nozzle is located at the center of the improvement pillar and the diameter of the observed improvement pillar. Furthermore, based on information about the jet energy ratio and the observation relationship information, the construction information estimation method also calculates estimated relationship information indicating the relationship between the estimated jet energy and the diameter of the estimated improvement pillar. The information about the jet energy ratio is the value obtained by dividing the jet energy required for the construction method when the nozzle is not located at the center of the improvement pillar by the observed jet energy.

[0054] As a result, the construction information estimation method makes it possible to easily estimate the relationship between jet energy and improvement diameter in solidified and improved ground using the deep mixing treatment method.

[0055] In addition, the information on the jet energy ratio is obtained by setting the diameter of the observation improvement column to 2R and the distance from the center of the improvement column to the nozzle to x n In this case, the above formula (10) may be used. This makes it possible for the construction information estimation method to more accurately calculate the relationship between the diameter of the improvement pillar and the distance of the nozzle from the center of the improvement pillar.

[0056] Furthermore, the observation-related information may be expressed by the above formula (12) when the soil to be constructed is sandy soil, and by the above formula (13) when it is clayey soil. In the above formulas (12) and (13), the diameter of the observation improvement pillar is 2R, the flow rate sprayed from the nozzle is Q0, the pressure at the nozzle is P0, and the time required to construct the improvement pillar to a specified height is T. This enables the construction information estimation method to estimate appropriate construction information according to the properties of the soil to be constructed.

[0057] (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.

[0058] Furthermore, a computer program (land development information estimation program) that causes a computer to execute the processing (land development information estimation method) in the above-described land development information estimation device 100, and a computer-readable recording medium on which the program is recorded, are included within the scope of this embodiment. Here, any type of computer-readable recording medium may be used. Furthermore, the computer program is not limited to being recorded on the recording medium, but may be transmitted via a telecommunications line, a wireless or wired communication line, a network such as the Internet, or the like.

[0059] (Actions, effects, etc.) The effects of this embodiment will be described below.

[0060] (1) A construction information estimation method according to a first aspect of this embodiment is a construction information estimation method executed by a computer to estimate information related to the construction of an improvement pillar in a deep mixing process. The construction information estimation method acquires construction information including the flow rate of the jet from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height. The construction information estimation method also acquires observation information including information related to the observed jet energy observed during construction when the nozzle is located at the center of the improvement pillar and the diameter of the observed improvement pillar. The construction information estimation method also calculates observation relationship information indicating the relationship between the observed jet energy required for a construction method when the nozzle is located at the center of the improvement pillar and the diameter of the observed improvement pillar based on the construction information and the observation information. The construction information estimation method also calculates estimated relationship information indicating the relationship between the estimated jet energy and the diameter of the estimated improvement pillar based on information related to the jet energy ratio and the observation relationship information. The information related to the jet energy ratio is the jet energy required for a construction method when the nozzle is not located at the center of the improvement pillar divided by the observed jet energy.

[0061] With this configuration, the construction information estimation method makes it possible to easily estimate the relationship between jet energy and improvement diameter in solidified and improved ground using the deep mixing treatment method.

[0062] (2) The information about the ratio of the jet energy in the construction information estimation method according to the second aspect of this embodiment is calculated by taking the diameter of the observation improvement pillar as 2R and the distance from the center of the improvement pillar to the nozzle as x n In this case, it may be expressed by the above formula (10).

[0063] With this configuration, the construction information estimation method can more accurately calculate the relationship between the diameter of the improvement pillar and the distance of the nozzle from the center of the improvement pillar.

[0064] (3) The construction information estimation method according to a third aspect of this embodiment is a construction information estimation method according to the first aspect of this embodiment, which is executed by a computer and estimates information related to the construction of an improvement pillar in a deep mixing process. The construction information estimation method acquires construction information including the flow rate of the jet from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height. The construction information estimation method also acquires observation information including information about the observed jet energy observed during construction when the nozzle is located at a predetermined position from the center of the improvement pillar and the diameter of the observed improvement pillar. The construction information estimation method also calculates observation relationship information indicating the relationship between the observed jet energy required for the construction method when the nozzle is located at a predetermined position from the center of the improvement pillar and the diameter of the observed improvement pillar based on the construction information and the observation relationship information. Furthermore, the construction information estimation method also calculates estimated relationship information indicating the relationship between the estimated jet energy and the diameter of the estimated improvement pillar based on information about the jet energy ratio and the observation relationship information. The information regarding the jet energy ratio is the jet energy required for the construction method when the nozzle is not at the center of the improved pillar divided by the observed jet energy.

[0065] With this configuration, the construction information estimation method makes it possible to easily estimate the relationship between jet energy and improvement diameter in solidified and improved ground using the deep mixing treatment method.

[0066] (4) The information about the ratio of the jet energy in the construction information estimation method according to the fourth aspect of this embodiment is calculated by setting the diameter of the observation improvement pillar to 2R and the distance from the center of the improvement pillar to the nozzle to x n and the predetermined length is r, it may be expressed by the above formula (11).

[0067] With this configuration, the construction information estimation method can more accurately calculate the relationship between the diameter of the improvement pillar and the distance of the nozzle from the center of the improvement pillar.

[0068] (5) In the construction information estimation method according to the fifth aspect of this embodiment, the observation-related information when the nozzle is at the center of the improvement pillar may be expressed by the above formula (12) if the soil to be constructed is sandy soil, or by the above formula (13) if it is clayey soil. In the above formulas (12) and (13), the diameter of the observation improvement pillar is 2R, the flow rate jetted from the nozzle is Q0, the pressure at the nozzle is P0, and the time required to construct the improvement pillar to a specified height is T.

[0069] With this configuration, the construction information estimation method can estimate appropriate construction information according to the properties of the soil to be constructed.

[0070] (6) The construction information estimation device 100 according to a sixth aspect of this embodiment is a construction information estimation device that estimates information related to the construction of an improvement pillar during deep mixing. The construction information estimation device 100 includes a construction information acquisition unit 111 that acquires construction information, including the flow rate of the jet from the nozzle used in construction, the pressure at the nozzle, and the time required to construct the improvement pillar to a predetermined height. The construction information estimation device 100 also includes an observation information acquisition unit 112 that acquires observation information, including information related to the observed jet energy observed during construction when the nozzle is located at the center of the improvement pillar and the diameter of the observed improvement pillar. The construction information estimation device 100 also includes an observation relationship information calculation unit 113 that calculates, based on the construction information and observation information, observation relationship information indicating the relationship between the observed jet energy required for the construction method when the nozzle is located at the center of the improvement pillar and the diameter of the observed improvement pillar. Furthermore, the construction information estimation device 100 includes an estimated relationship information calculation unit 114 that calculates estimated relationship information indicating the relationship between the estimated jet energy and the estimated diameter of the improvement pillar based on the information on the jet energy ratio and the observed relationship information. Note that the information on the jet energy ratio is the value obtained by dividing the jet energy required for a construction method when the nozzle is not at the center of the improvement pillar by the observed jet energy.

[0071] With this configuration, the construction information estimation device 100 can easily estimate the relationship between the jet energy and the improvement diameter in solidified and improved ground using the deep mixing treatment method. [Explanation of symbols]

[0072] 10 Stirring shaft 20 Stirring blade 100 Creation information estimation device 110 control section 111 Construction Information Acquisition Department 112 Observation Information Acquisition Unit 113 Observation-related information calculation unit 114 Estimated relationship information calculation unit 120 Storage section 121 Construction information DB 122 Observation Information DB 130 Input / Output Interface 140 Communication Interface

Claims

1. A construction information estimation method executed by a computer to estimate information about the construction of an improvement column in a deep mixing process, Acquire construction information including the flow rate of the water jetted from the nozzle used in construction, the pressure at the nozzle, and the time required to build the improved pillar to a predetermined height; Obtaining observation information including information about the observed jet energy and the diameter of the observed improvement pillar observed during construction when the nozzle is at the center of the improvement pillar; Based on the construction information and the observation information, calculation is made of observation relationship information indicating the relationship between the observation jet energy required for the construction method when the nozzle is located at the center of the improvement pillar and the diameter of the observation improvement pillar; A construction information estimation method that calculates estimated relationship information showing the relationship between the estimated jet energy and the diameter of the estimated improvement pillar based on information regarding the jet energy ratio, which is the jet energy required in the construction method when the nozzle is not at the center of the improvement pillar divided by the observed jet energy, and the observed relationship information.

2. The information about the jet energy ratio is obtained by setting the diameter of the observation improvement column to 2R and the distance from the center of the improvement column to the nozzle to x ｎ The construction information estimation method according to claim 1, wherein: [Equation 1]

3. A construction information estimation method executed by a computer to estimate information about the construction of an improvement column in a deep mixing process, Acquire construction information including the flow rate of the water jetted from the nozzle used in construction, the pressure at the nozzle, and the time required to build the improved pillar to a predetermined height; Obtaining observation information including information about the observed jet energy and the diameter of the observed improvement pillar observed during construction when the nozzle is at a predetermined position from the center of the improvement pillar; Based on the construction information and the observation information, calculation is made of observation relationship information indicating the relationship between the observation jet energy required for the construction method when the nozzle is located at a predetermined position from the center of the improvement pillar and the diameter of the observation improvement pillar; A construction information estimation method that calculates estimated relationship information showing the relationship between the estimated jet energy and the diameter of the estimated improvement pillar based on information regarding the jet energy ratio, which is the jet energy required in the construction method when the nozzle is not at the center of the improvement pillar divided by the observed jet energy, and the observed relationship information.

4. The information about the jet energy ratio is obtained by setting the diameter of the observation improvement column to 2R and the distance from the center of the improvement column to the nozzle to x ｎ The construction information estimation method according to claim 3, wherein, where r is the predetermined length, the construction information estimation method is expressed by the following equation (2): [Equation 2]

5. The observation-related information when the nozzle is at the center of the improvement pillar is expressed as follows: the diameter of the observation improvement pillar is 2R, the flow rate jetted from the nozzle is Q ０ , the pressure at the nozzle is P ０ and the time required to build the improvement pillar to a predetermined height is T, the method for estimating construction information described in claim 1 or 2 is expressed by the following formula (3) if the soil to be constructed is sandy soil, and by the following formula (4) if the soil to be constructed is clayey soil. [Equation 3] [Equation 4]

6. A construction information estimation device that estimates information regarding the construction of an improvement pillar in a deep mixing process, a construction information acquisition unit that acquires construction information including the flow rate of the water jetted from the nozzle used in construction, the pressure at the nozzle, and the time required to build the improvement column to a predetermined height; an observation information acquisition unit that acquires observation information including information about the observed jet energy and the diameter of the observation improvement pillar observed during construction when the nozzle is located at the center of the improvement pillar; an observation relationship information calculation unit that calculates observation relationship information indicating the relationship between the observation jet energy required for the construction method when the nozzle is located at the center of the improvement pillar and the diameter of the observation improvement pillar based on the construction information and the observation information; an estimated relationship information calculation unit that calculates estimated relationship information that indicates the relationship between the estimated jet energy and the diameter of the estimated improved column based on information on the jet energy ratio, which is the value obtained by dividing the jet energy required in the construction method when the nozzle is not at the center of the improved column by the observed jet energy, and the observed relationship information; A development information estimation device comprising:

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