Mortar injection management system

Abstract

To accurately calculate the amount of mortar to be injected into an injection hole when injecting mortar with a mixing pressure pump.SOLUTION: A mortar injection management system 1 includes an operation switching unit 314 for switching between an operating state and an operation stop state of a kneading pressure pump 3, a water meter 306 installed in a water supply pipe 305, a discharge amount calculation unit 211 for extracting a corresponding calculation constant from a calculation data storage unit 222 according to an input type of mortar and calculating a calculated discharge amount corresponding to the amount of water supplied per unit time taken from the water meter 306 when the kneading pressure pump 3 is operating to pump the mortar M based on the calculation constant, and a reference injection determination unit 212 for accumulating the calculated discharge amount 211, comparing it with a set injection amount, and determining whether the accumulated calculated discharge amount is equal to or greater than the set injection amount. When the accumulated calculated discharge amount is equal to or greater than the set injection amount, information indicating that the reference amount is cleared is output.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a mortar injection management system that calculates the amount of mortar injected for each injection hole when injecting mortar into an injection hole in natural ground for natural ground reinforcement. [Background technology]

[0002] Conventionally, when injecting mortar into injection holes in the ground for ground reinforcement, systems that calculate the amount of mortar injected for each injection hole include the rock bolt method management systems described in Patent Documents 1 and 2. This rock bolt method management system measures the flow rate of mortar with a flow meter installed between the discharge port of the pressure pump and the pressure hose when injecting mortar with a pressure pump into rock bolt holes into which rock bolts formed in a tunnel are inserted, and calculates the total amount of mortar injected into each rock bolt hole based on the flow rate measured by the flow meter during the operation period from when the pressure pump starts to when it stops operating. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-21448 A [Patent Document 2] JP 2023-21449 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, while a general flow meter can accurately measure the flow rate of a fluid with low viscosity, such as a liquid or gas with low viscosity, when measuring the flow rate of a fluid with high viscosity, such as mortar, the measured flow rate usually differs significantly from the actual flow rate. Therefore, as in the systems of Patent Documents 1 and 2, when the total amount of mortar injected into the injection hole is calculated based on the measured flow rate of the flow meter during the operation period from the start of operation of the pressure pump to its stop, there is a problem that the error from the actual amount of mortar injected into the injection hole becomes large.

[0005] The present invention has been proposed in consideration of the above-mentioned problems, and aims to provide a mortar injection management system that, when injecting mortar into an injection hole in the ground using a mixing pressure pump for ground reinforcement, can accurately calculate the amount of mortar to be injected into the injection hole and reliably inject the necessary amount of mortar into the injection hole. [Means for solving the problem]

[0006] The mortar injection management system of the present invention includes a mixing section to which dry mortar is continuously supplied at a fixed amount and water is supplied through a water supply pipe after being adjusted so as to obtain a desired mortar property, a mixing and pumping pump that pumps the mortar produced by mixing the dry mortar and the water through a pumping hose in a pumping section, an operation switching section that switches between an operating state and an operation stop state of the mixing and pumping pump, a water meter installed on the water supply pipe, a calculation data storage section that stores calculation constants corresponding to the type of mortar, a set injection amount storage section that stores a set injection amount of mortar for an injection hole, and an input The present invention is characterized in that it comprises a discharge amount calculation unit that extracts the corresponding calculation constant from the calculation data storage unit according to the input mortar type, and calculates a calculated discharge amount corresponding to the amount of water supplied per unit time taken from the water meter during operation of the kneading pressure pump that pumps the mortar based on the calculation constant, and a reference injection judgment unit that accumulates the calculated discharge amount, compares it with the set injection amount, and judges whether the accumulated calculated discharge amount is equal to or greater than the set injection amount, and outputs information indicating that the reference amount is cleared when the accumulated calculated discharge amount is equal to or greater than the set injection amount. According to this, in a configuration in which water is supplied to the mixing section of the kneading and pumping pump, which continuously supplies a fixed amount of dry mortar, by adjusting the water supply pipe so that the desired mortar properties are obtained, when the amount of water supplied through the water supply pipe increases or decreases, the actual amount of mortar discharged from the kneading and pumping pump is usually different from the standard amount of mortar. However, by measuring the actual amount of water supplied with a water meter installed in the water supply pipe and calculating the calculated amount of discharge corresponding to the amount of water supplied based on the calculation constant, an accurate value can be obtained as the actual amount of mortar discharged from the kneading and pumping pump. Furthermore, by integrating the calculated amount of discharge to obtain an integrated calculated amount of discharge, an accurate value of the actual amount of mortar injected into each injection hole can be obtained as the integrated calculated amount of discharge. Then, by determining whether the integrated calculated amount of discharge is equal to or greater than the set amount of injection, it can be determined whether the necessary amount of mortar has been injected into the injection hole. Therefore, when injecting mortar into an injection hole of the natural ground by the kneading and pumping pump for natural ground reinforcement, the amount of mortar injected into the injection hole can be accurately calculated, the necessary amount of mortar can be reliably injected into the injection hole, and the construction management of the mortar injection can be performed.

[0007] The mortar injection management system of the present invention is characterized in that the calculation data storage unit stores a discharge amount calculation formula into which the calculation constant is substituted to calculate a calculated discharge amount, and the discharge amount calculation unit calculates the calculated discharge amount by substituting the extracted calculation constant into the discharge amount calculation formula. According to this, the calculated discharge amount corresponding to the amount of water supplied per unit time taken from the water meter can be calculated simply and accurately by substituting the calculation constant into the discharge amount calculation formula.

[0008] The mortar injection management system of the present invention is characterized in that the calculation data storage unit stores a calculation constant corresponding to the mortar type and the amount of water supplied per unit time taken from the water meter, and the discharge amount calculation unit calculates the calculated discharge amount by correcting the standard discharge amount of the kneading pressure pump with the calculation constant. According to this, the calculated discharge volume corresponding to the amount of water supplied per unit time taken from the water meter can be calculated simply and accurately by correcting the standard discharge volume of the kneading pressure pump with a calculation constant corresponding to the mortar type and the amount of water supplied per unit time taken from the water meter.

[0009] The mortar injection management system of the present invention comprises a pressure sensor installed in the pressure transfer hose, a set injection pressure storage unit that stores a set injection pressure of mortar for the injection hole, and a standard injection judgment unit that judges whether the measured injection pressure of the pressure sensor is greater than or equal to the set injection pressure, and is characterized in that it outputs information that the standard amount is cleared when the accumulated calculated discharge amount is greater than or equal to the set injection amount and the measured injection pressure is greater than or equal to the set injection pressure. With this, in addition to the accurately calculated amount of mortar injected, it is possible to confirm that the necessary mortar has been injected into the injection hole using the injection pressure, thereby more reliably injecting the necessary mortar into the injection hole and managing the mortar injection work.

[0010] The mortar injection management system of the present invention is characterized in that the information on the standard amount being cleared is output to the mobile terminal so that the information on the standard amount being cleared is displayed on the mobile terminal. This allows workers with mobile devices to recognize in real time that the necessary mortar injection has been carried out, thereby improving the work efficiency of the entire mortar injection work.

[0011] The mortar injection management system of the present invention is characterized in that the mortar type is input from the mobile terminal, and the operation operation switching unit that switches the kneading pressure pump between an operating state and an operation stop state is provided on the mobile terminal. This allows workers with mobile terminals to input mortar types and operate the mixing pressure pump without being tied down to a specific location, thereby improving the work efficiency of the entire mortar injection operation.

[0012] The mortar injection management system of the present invention is characterized by comprising a construction record storage unit that stores identification information of an injection hole into which mortar is injected and a calculated cumulative discharge amount for the injection hole corresponding to the identification information. According to this, the integrated corrected discharge amount for the injection hole of the identification information, in other words, the amount of mortar injected into the injection hole of the identification information, can be recorded and stored, and used as a quality control record for the mortar injection work. Effect of the Invention

[0013] According to the mortar injection management system of the present invention, when mortar is injected into an injection hole in the ground using a mixing pressure pump to reinforce the ground, the amount of mortar to be injected into the injection hole can be accurately calculated, and the necessary amount of mortar can be reliably injected into the injection hole. [Brief description of the drawings]

[0014] [Figure 1] 1 is a block diagram showing the overall configuration of a mortar injection management system according to a first embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional explanatory view of a kneading pressure-feed pump according to the first embodiment. [Diagram 3] 3A is a block diagram of a mobile terminal in the mortar injection management system of the first embodiment, and FIG. 3B is a block diagram of a management recording device in the mortar injection management system of the first embodiment. [Figure 4] 4A and 4B are cross-sectional explanatory views illustrating mortar injection in an example of an injection hole and a pressure feed hose through which mortar injection management is performed by the mortar injection management system of the first embodiment. FIG. [Diagram 5] 4 is a flowchart showing a mortar injection management process in the mortar injection management system of the first embodiment. [Figure 6] FIG. 4 is an explanatory diagram showing a first example of a calculation constant table in the mortar injection management system of the first embodiment. [Figure 7] FIG. 11 is an explanatory diagram showing a second example of a calculation constant table in the mortar injection management system of the first embodiment. [Figure 8]FIG. 4 is a block diagram showing the overall configuration of a mortar injection management system according to a second embodiment of the present invention. [Figure 9] 13A and 13B are cross-sectional explanatory views illustrating mortar injection in an example of an injection hole and a pressure feed hose through which mortar injection management is performed in the mortar injection management system of the second embodiment. [Figure 10] 10 is a flowchart showing a mortar injection management process in the mortar injection management system of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] [Mortar injection management system of the first embodiment] As shown in FIG. 1, the mortar injection management system 1 of the first embodiment of the present invention comprises an injection management device 2 consisting of a server, a personal computer, or a group of computers connected by a communication line, a mixing and pressure delivery pump 3, a mobile terminal 4 such as a smartphone, a mobile dedicated terminal, or a mobile personal computer, and a management record device 5 consisting of a server, a personal computer, or a group of computers connected by a communication line, and the injection management device 2, the mixing and pressure delivery pump 3, the mobile terminal 4, and the management record device 5 are communicatively connected via an IoT gateway 6.

[0016] The injection management device 2 comprises a control unit 21 such as an MPU or CPU, a memory unit 22 consisting of an HDD, SSD, ROM, RAM, etc., an input unit 23 such as a mouse, keyboard, touch panel, etc., a display unit 24 such as a display, a timer 25 for measuring time, and a communication interface 26 for connecting the injection management device 2 to a communication line.

[0017] The memory unit 22 is provided with a control program storage unit 221 for storing a control program for controlling the injection management device 2 in cooperation with the control unit 21, a calculation data storage unit 222 for storing calculation constants and the like corresponding to the mortar type for calculating the discharge amount of mortar M, and a set injection amount storage unit 223 for storing a set injection amount of mortar M into the injection hole 703. The mortar type corresponding to the calculation constants in the calculation data storage unit 222 can be the type of dry mortar DM or the type of mortar M obtained by mixing dry mortar DM with water, as necessary (see Figs. 1, 2 and 4).

[0018] The calculation data storage unit 222 stores, as a first example, a discharge rate calculation formula for calculating a calculated discharge rate by substituting a calculation constant such as calculated discharge rate=a×supplied water rate+b, and calculation constants a and b corresponding to a mortar type, which are set in consideration of characteristics such as the standard discharge rate of the kneading pressure pump 3 (see FIG. 6). Also, as a second example different from the first example, the calculation data storage unit 222 stores calculation constants such as the standard discharge rate of the kneading pressure pump 3, and a correction coefficient for correcting the standard discharge rate, which corresponds to the mortar type and the supplied water rate per unit time taken from a water meter 306 described later (see FIG. 7).

[0019] The control unit 21 cooperates with a control program of the control program storage unit 221, and functions as a discharge amount calculation unit 211 and a reference injection determination unit 212. The discharge amount calculation unit 211 recognizes the amount of water supplied per unit time taken from the water meter 306 during operation of the kneading and pumping pump 3 that pumps the mortar M, and extracts a corresponding calculation constant from the calculation data storage unit 222 according to the type of mortar inputted by inputting from the mobile terminal 4 via a communication line or inputting from the input unit 23, and calculates the calculated discharge amount corresponding to the amount of water supplied per unit time taken from the water meter 306 during operation of the kneading and pumping pump 3 that pumps the mortar M, based on the extracted calculation constant.

[0020] In the case of the first example described above, for example, the discharge rate calculation unit 211 recognizes the amount of water supplied per unit time taken from the water meter 306 during operation of the kneading pressure pump 3 that pumps the mortar M, extracts the discharge rate calculation formula: calculated discharge rate = a × supply water rate + b and the calculation constants a and b corresponding to the input mortar type, and calculates the calculated discharge rate per unit time by substituting the calculation constants a and b and the recognized supply water rate into the discharge rate calculation formula: calculated discharge rate = a × supply water rate + b. In addition, in the case of the second example described above, for example, the discharge rate calculation unit 211 recognizes the amount of water supplied per unit time taken in from the water meter 306 during operation of the mixing and pumping pump 3 that pumps the mortar M, and extracts the standard discharge rate of the mixing and pumping pump 3 and a calculation constant which is a correction coefficient for correcting the standard discharge rate corresponding to the supply water rate recognized as the mortar type, and calculates the calculated discharge rate by correcting the standard discharge rate, for example, by multiplying the standard discharge rate of the mixing and pumping pump 3 by the calculation constant which is the correction coefficient.

[0021] The reference injection determination unit 212 accumulates the calculated discharge amount calculated by the discharge amount calculation unit 211 from the start of injection of mortar M into a specific injection hole 703, compares the accumulated calculated discharge amount with the set injection amount, determines whether the accumulated calculated discharge amount is equal to or greater than the set injection amount, and outputs information on the reference amount clear when the accumulated calculated discharge amount is equal to or greater than the set injection amount. The output of the reference amount clear information can be, for example, transmitted and output to the mobile terminal 4 via the communication line via the communication interface 26 so that the information on the reference amount clear is displayed on the mobile terminal 4, or transmitted and output to the record management device 5 and the mobile terminal 4 via the communication line via the communication interface 26 so that the information on the reference amount clear is displayed on the record management device 5 and the mobile terminal 4, or displayed and output on the display unit 24, or output by appropriately combining both the transmitted output and the displayed output.

[0022] 2, the kneading pressure pump 3 has a funnel-shaped hopper 301, an internal portion of which communicates with a discharge port 302 of the hopper 301 and a cylindrical portion 304 which is formed so as to extend linearly and is inclined so that the distal end side is lower. A water supply pipe 305 which supplies water W is connected to the water supply port 303, and a water meter 306 is installed in the water supply pipe 305.

[0023] Inside the tubular part 304, there are provided an agitator blade 307 for dry mixing of the dry mortar DM, and an agitator rod 308 connected to the agitator blade 307 in the axial direction, and the agitator blade 307 and the agitator rod 308 can be rotated by a motor 309 provided at the rear side of the tubular part 304. The dry mortar DM fed into the inside of the tubular part 304 from the discharge port 302 of the hopper 301 is transported to the tip side of the tubular part 304 by the rotation of the agitator blade 307, and mixed with water W supplied through a water supply pipe 305 and poured from a water inlet 303 by the rotation of the agitator rod 308. The part where the agitator rod 308 rotates corresponds to a kneading part 310 where the dry mortar DM is continuously supplied at a fixed amount, and water W is supplied to the kneading part 310 through the water supply pipe 305 after being adjusted to obtain the desired mortar properties.

[0024] Mortar M produced by kneading dry mortar DM and water W is further agitated in a pressure-feed pump section 311, which pressurizes and discharges the mortar M while kneading it as it is pushed and mixed by the rotation of a metal screw rotor inside a rubber inner spiral stator, and the mortar M produced by kneading dry mortar DM and water W is pressure-fed by the pressure-feed pump section 311 through a pressure-feed hose 312. In the case of a second embodiment described later, a pressure sensor 313 is provided in the pressure-feed hose 312 of the kneading pressure-feed pump 3.

[0025] The mixing and pumping pump 3 is provided with an operation switching unit 314 for switching between an operation state for pumping the mortar M of the mixing and pumping pump 3 and an operation stop, and a drive control unit 315 for controlling the drive of the mixing and pumping pump 3 in response to an input from the operation switching unit 314 (see Figs. 1 and 2). The water meter 306 and the drive control unit 315 of the mixing and pumping pump 3 are connected to a communication line via a communication interface 316, the water meter 306 is communicatively connected to the injection management device 2 via the IoT gateway 6, and the drive control unit 315 is communicatively connected to the mobile terminal 4 via the IoT gateway 6. The injection management device 2 receives a signal of starting and stopping the mortar injection operation in the drive control unit 315 of the mixing and pumping pump 3 via the communication line. When a pressure sensor 313 is installed in the pressure hose 312 of the mixing and pumping pump 3 as in a second embodiment described later, the pressure sensor 313 is connected to a communication line via the communication interface 316 and communicatively connected to the injection management device 2a via the IoT gateway 6 (see Fig. 8).

[0026] 3(a), the mobile terminal 4 includes a control unit 41 such as a CPU, a storage unit 42 including a ROM, a RAM, a flash memory, etc., an input unit 43 such as a touch panel, a mouse, a keyboard, etc., a display unit 44 such as a touch panel or a display that also serves as the input unit 33, and a communication interface 45 that connects the mobile terminal 4 to a communication line. The storage unit 42 includes a control program storage unit 421 that stores a control program that cooperates with the control unit 41 to control the mobile terminal 4.

[0027] The mobile terminal 4 is communicatively connected to the injection management device 2 and the kneading pressure delivery pump 3 via the communication interface 45 and the IoT gateway 6. When the injection management device 2 transmits and outputs information on the reference amount clear to the mobile terminal 4 so that the information on the reference amount clear is displayed on the mobile terminal 4, the control unit 41 of the mobile terminal 4 displays the information on the reference amount clear in a predetermined format on the display unit 44 in accordance with the information on the reference amount clear. When the type of mortar is transmitted and input from the mobile terminal 4 to the injection management device 2, the injection management device 2 receives the type of mortar transmitted to the injection management device 2 by the input unit 43 of the mobile terminal 4, and the control unit 21 of the injection management device 2 executes a predetermined process of the discharge amount calculation unit 211 using the received and input type of mortar.

[0028] The mobile terminal 4 is preferably provided with an operation switching unit 411 that switches between the operation state and the operation stop of the kneading pressure pump 3 by control processing and communication operation in response to an input from the input unit 43, and in this case, the drive control unit 315 of the kneading pressure pump 3 starts and stops the mortar injection operation in response to an operation start signal and an operation stop signal transmitted by the control processing of the operation switching unit 411. It is possible to provide both the operation switching unit 411 of the mobile terminal 4 that switches between the operation state and the operation stop of the kneading pressure pump 3 and the operation switching unit 314 of the kneading pressure pump 3, or to provide only one of them.

[0029] 3(b), the management record device 5 includes a control unit 51 such as a CPU, a memory unit 52 configured with a ROM, RAM, etc., an input unit 53 such as a mouse and a keyboard, an output unit 54 such as a display and a printer, and a communication interface 55 that connects the management record device 5 to a communication line. The memory unit 52 includes a control program storage unit 521 that stores a control program that cooperates with the control unit 51 to control the management record device 5, a construction record storage unit 522, and an output format storage unit 523 that stores output formats such as form formats.

[0030] The construction record storage unit 522 stores, in correspondence with each other, identification information such as the identification number of the injection hole 703 into which mortar M is injected, which is input from the input unit 53 of the management record device 5, the input unit 23 of the injection management device 2, or the input unit 43 of the mobile terminal 4, and the accumulated calculated discharge volume calculated by the injection management device 2 for the injection hole 703 of the identification information and transmitted to the management record device 5 via a communication line.

[0031] The processing of the mortar injection management system 1 of the first embodiment is performed, for example, when mortar is injected into an injection hole 703 shown in Fig. 4 using a pressure hose 312. In the example of Fig. 4, shotcrete 702 is sprayed onto the inner periphery of the natural ground 701 of a tunnel, and an injection hole 703 is formed by drilling from the inner periphery of the tunnel. Then, the pressure hose 312 is inserted deep into the injection hole 703, and while injecting mortar M with the pressure hose 312, the pressure hose 312 is gradually pulled out from the injection hole 703, and after injecting mortar M into the injection hole 703 up to a specified injection amount, a rock bolt is inserted and cast.

[0032] In the mortar injection management process of the mortar injection management system 1 of the first embodiment, dry mortar DM is charged into the mixing and pumping pump 3, the pumping hose 312 of the mixing and pumping pump 3 is inserted into a specific injection hole 703, and the identification information of the injection hole 703 through which mortar is injected and the type of mortar are stored in a predetermined memory area of ​​the memory unit 22 of the injection management device 2 by transmission input from the mobile terminal 4, and in response to an input to start mortar injection from the operation switching unit 314 of the mixing and pumping pump 3 or the operation switching unit 411 of the mobile terminal 4, the drive control unit 315 of the mixing and pumping pump 3 starts the operation of mortar injection from the mixing and pumping pump 3 and sends an operation start signal to the injection management device 2, as shown in Figure 5 (S1).

[0033] The injection management device 2 continuously receives the measured value of the amount of water supplied from the water meter 306 during operation of the kneading and pumping pump 3 that pumps the mortar M via the communication line, and the discharge amount calculation unit 211 extracts a corresponding calculation constant from the calculation data storage unit 222 depending on the input mortar type, and continuously calculates the calculated discharge amount corresponding to the amount of water supplied per unit time received from the water meter 306 during operation of the kneading and pumping pump 3 that pumps the mortar M based on the calculation constant (S2).

[0034] The reference injection determination unit 212 of the injection management device 2 continuously calculates the accumulated calculated discharge amount by accumulating the calculated discharge amount continuously calculated by the discharge amount calculation unit 211 (S3), continuously compares the accumulated calculated discharge amount with the set injection amount extracted from the set injection amount storage unit 223, and continuously determines whether the accumulated calculated discharge amount is greater than or equal to the set injection amount (S4).

[0035] For example, when the accumulated calculated discharge amount becomes equal to or exceeds the set injection amount, the reference injection determination unit 212 of the injection management device 2 transmits and outputs information on the reference amount clear to the mobile terminal 4 so that the information on the reference amount clear is displayed on the mobile terminal 4 (S5). In response to the display of the information on the reference amount clear on the mobile terminal 4, the operator inputs an operation stop of the mortar injection with the operation switching unit 314 of the kneading pressure pump 3 or the operation switching unit 411 of the mobile terminal 4, and in response to the operation stop input of the mortar injection from the operation switching unit 314 of the kneading pressure pump 3 or the operation switching unit 411 of the mobile terminal 4, the drive control unit 315 of the kneading pressure pump 3 stops the operation of the mortar injection of the kneading pressure pump 3 and transmits an operation stop signal to the injection management device 2 (S6).

[0036] In response to receiving an operation stop signal, the injection management device 2 stops the calculation process of the calculated discharge amount by the discharge amount calculation unit 211 and the calculation process of the integrated calculated discharge amount and the comparison process with the set injection amount by the reference injection judgment unit 212 (S7), and transmits the integrated calculated discharge amount from the start of operation to the end of operation to the management record device 5 in association with the identification information of the injection hole 703 into which the mortar was injected (S8). The management record device 5 stores the received and input identification information of the injection hole 703 into which the mortar M was injected and the integrated calculated discharge amount for the injection hole 703 of the identification information in association with each other in the construction record storage unit 522 (S9). In the management record device 5, the identification information of the injection hole 703 and the corresponding integrated calculated discharge amount are displayed or printed on the output unit 54 in a predetermined output format in response to an output request input from the input unit 53 when necessary.

[0037] According to the mortar injection management system 1 of the first embodiment, the actual amount of water supplied is measured by the water meter 306 installed in the water supply pipe 305, and the calculated discharge amount corresponding to the amount of water supplied is calculated based on the calculation constant, so that an accurate value can be obtained as the actual discharge amount of mortar M from the mixing and pumping pump 3. Furthermore, by integrating the calculated discharge amount to obtain the integrated calculated discharge amount, an accurate value of the actual amount of mortar injected into each injection hole 703 can be obtained as the integrated calculated discharge amount. Then, by determining whether the integrated calculated discharge amount is equal to or greater than the set injection amount, it can be determined whether the necessary amount of mortar M has been injected into the injection hole 703. Therefore, when the mixing and pumping pump 3 injects mortar M into the injection hole 703 of the natural ground 701 for natural ground reinforcement, the injection amount of mortar M into the injection hole 703 can be accurately calculated, and the necessary amount of mortar M can be reliably injected into the injection hole 703, so that the construction management of the mortar injection can be performed.

[0038] Furthermore, in the above first example, the calculated discharge rate corresponding to the amount of water supplied per unit time taken from the water meter 306 can be calculated simply and accurately by substituting a calculation constant into the discharge rate calculation formula. Also, in the above second example, the calculated discharge rate corresponding to the amount of water supplied per unit time taken from the water meter 306 can be calculated simply and accurately by correcting the standard discharge rate of the kneading pressure pump 3 with a calculation constant corresponding to the mortar type and the amount of water supplied per unit time taken from the water meter 306.

[0039] Furthermore, by having the injection management device 2 output information indicating that the standard amount has been cleared to the mobile terminal 4 so that the information is displayed on the mobile terminal 4, the worker holding the mobile terminal 4 can recognize in real time that the necessary mortar injection has been performed, thereby improving the work efficiency of the entire mortar injection work.

[0040] In addition, if the mortar type is input to the injection management device 2 by transmission from the mobile terminal 4 and an operation operation switching unit 411 that switches the mixing and pumping pump 3 between operating and stopped is provided on the mobile terminal 4, a worker carrying the mobile terminal 4 can input the mortar type and operate the mixing and pumping pump 3 without being restricted to a specific location, thereby improving the work efficiency of the entire mortar injection work.

[0041] In addition, by configuring the management record device 5 to have a construction record storage unit 522 that stores the identification information of the injection hole 703 into which mortar M is injected and the accumulated calculated discharge amount for the injection hole 703 of the identification information, the accumulated corrected discharge amount for the injection hole 703 of the identification information, in other words, the mortar injection amount for the injection hole 703 of the identification information, can be recorded and retained and used as a quality control record of the mortar injection work.

[0042] [Second embodiment of mortar injection management system] 8, in the mortar injection control system 1a of the second embodiment according to the present invention, a pressure sensor 313 is installed in the pressure hose 312 of the kneading pressure pump 3a, a set injection pressure storage unit 224 is provided in the injection control device 2a for storing the set injection pressure of the mortar M for the injection hole 703, and a reference injection determination unit 221a of the injection control device 2a determines whether the measured injection pressure of the pressure sensor 313 is equal to or greater than the set injection pressure extracted from the set injection pressure storage unit 224, and outputs information indicating that the reference amount is cleared when the integrated calculated discharge amount is equal to or greater than the set injection amount and the measured injection pressure is equal to or greater than the set injection pressure. The other basic configurations are the same as those of the mortar injection control system 1 of the first embodiment.

[0043] The processing of the mortar injection management system 1a of the second embodiment is performed, for example, when injecting mortar into an injection hole 703 shown in Fig. 9 using a pressure hose 312 and a packer 705. In the example of Fig. 9, as in the example of Fig. 4, shotcrete 702 is sprayed onto the inner periphery of the natural ground 701 of the tunnel, and an injection hole 703 is formed by drilling from the inner periphery of the tunnel.

[0044] In this example, a bag-shaped cloth packer 705 is provided around the base of the rock bolt 704 that is driven into the injection hole 703, a part of the pressure hose 312 is provided along the longitudinal direction of the rock bolt 704, and most of the exhaust return pipe 706 is provided along the longitudinal direction of the rock bolt 704. The packer 705 is provided at a position near the base of the rock bolt 704 so as to wrap the rock bolt 704, the pressure hose 312, and the exhaust return pipe 706 together, and is attached by fastening both ends of the rock bolt 704 in the longitudinal direction with a fastening band. The pressure hose 312 is provided so that mortar can be injected into the packer 705 and the injection hole 703, and a discharge port for mortar M is provided protruding from the packer 705 to the tip side of the rock bolt 704, and a cut-shaped opening is formed in the packer 705 with an opening area larger than the discharge port.

[0045] In this example, when mortar is injected into the injection hole 703, the rock bolt 704 to which the bag-shaped packer 705, the pressure hose 312, and the exhaust return pipe 706 are attached is inserted from the tip side into the injection hole 703, and the mortar is injected using the mixing pressure pump 3 and the pressure hose 312. Mortar M is discharged from the notched opening of the pressure hose 312 in the packer 705 to expand the packer 705, and the vicinity of the injection hole 703 is first blocked by the expanded packer 705. Thereafter, mortar M is injected into the injection hole 703 whose vicinity of the hole mouth is blocked by the expanded packer 705, and air in the injection hole 703 is discharged from the exhaust return pipe 706. Mortar injection is continued until exhaust from the exhaust return pipe 706 is completed and mortar M is returned from the exhaust return pipe 706 to the space on the inner circumference side of the tunnel.

[0046] In the mortar injection management process of the mortar injection management system 1a of the second embodiment, the same processes as those from S1 to S4 in the first embodiment are executed. Then, when the integrated calculated discharge amount becomes equal to or exceeds the set injection amount, for example, the reference injection determination unit 212a of the injection management device 2a determines whether the measured injection pressure of the pressure sensor 313 is equal to or exceeds the set injection pressure extracted from the set injection pressure storage unit 224 (S41), and when the integrated calculated discharge amount is equal to or exceeds the set injection amount and the measured injection pressure is equal to or exceeds the set injection pressure, transmits and outputs information on the reference amount clear to the mobile terminal 4 so that the information on the reference amount clear is displayed on the mobile terminal 4 (S51). After that, the same processes as those from S6 to S9 in the first embodiment are executed.

[0047] According to the mortar injection management system 1a of the second embodiment, it is possible to confirm that the necessary mortar has been injected into the injection hole 703 not only based on the accurately calculated injection amount of mortar M but also based on the injection pressure, so that the necessary mortar can be more reliably injected into the injection hole 703 and the mortar injection work can be managed. In addition, the configuration corresponding to the first embodiment can provide the corresponding effects.

[0048] [Scope of the invention disclosed herein] The inventions disclosed in this specification include, in addition to the inventions and embodiments listed as inventions, those specified by changing partial contents of these to other contents disclosed in this specification, those specified by adding other contents disclosed in this specification to these contents, or those specified by deleting partial contents of these to the extent that partial effects are obtained, and forming a higher-level concept. The inventions disclosed in this specification also include the following contents and modifications.

[0049] For example, in the mortar injection management system of the present invention, the calculation data for calculating the calculated discharge amount of mortar M may be other than the calculation data of the first example or the calculation data of the second example in the above embodiment, as long as it can accurately calculate the injection amount of mortar M into the injection hole. Furthermore, when a discharge calculation formula and a calculation constant corresponding to the mortar type, which is set taking into account characteristics such as the standard discharge amount of the kneading pressure pump, are used as the calculation data, it is also suitable to use data other than the discharge amount calculation formula in the above example: calculated discharge amount = a × supply water amount + b and the calculation constants a and b corresponding to the mortar type, as long as it can accurately calculate the injection amount of mortar M into the injection hole.

[0050] In addition, the calculation constants a and b corresponding to the mortar type in the first example are calculated in advance as experimental data according to the characteristics of each type of mortar M, and stored in the calculation data storage unit 222. A discharge amount calculation formula using the calculation constants a and b for each injection is set according to the mortar type input from the mobile terminal 4. The mortar type used in this case is treated as a mortar type that differs not only according to the product characteristics of the dry mortar, but also according to the table flow value that indicates the fluidity of the mortar required at the time of injection. The same applies to the correction coefficients corresponding to the mortar type in the second example.

[0051] In addition, the mortar injection management system of the present invention is suitable for use when injecting mortar M into an injection hole into which a rock bolt is to be driven, but it may also be used when injecting mortar M into an injection hole into which a rock bolt is not to be driven. [Industrial Applicability]

[0052] The present invention can be used, for example, when injecting mortar into an injection hole formed in the natural ground of a tunnel. [Explanation of symbols]

[0053] 1, 1a... Mortar injection management system 2, 2a... Injection management device 21... Control unit 211... Discharge amount calculation unit 212, 212a... Reference injection judgment unit 22... Memory unit 221... Control program storage unit 222... Calculated data storage unit 223... Set injection amount storage unit 224... Set injection pressure storage unit 23... Input unit 24... Display unit 25... Timer 26... Communication interface 3, 3a... Mixing pressure pump 301... Hopper 302... Discharge port 303... Water inlet 304... Cylinder unit 305... Water supply pipe 306... Water meter 307... Mixing blade 308... Mixing rod 309... Motor 310... Mixing unit 311... Pressure pump unit 312... Pressure hose 313... Pressure sensor 314... Operation switching unit 315... Drive control unit 316... Communication interface 4...Mobile terminal 41...Control unit 411...Operation switching unit 42...Memory unit 421...Control program storage unit 43...Input unit 44...Display unit 45...Communication interface 5...Management record device 51...Control unit 52...Memory unit 521...Control program storage unit 522...Construction record storage unit 523...Output format storage unit 53...Input unit 54...Output unit 55...Communication interface 6...IoT gateway 701...Natural ground 702...Sprayed concrete 703...Injection hole 704...Rock bolt 705...Packer 706...Exhaust return pipe DM...Dry mortar M...Mortar W...Water

Claims

1. a mixing and pumping pump which supplies water to a mixing section to which a fixed amount of dry mortar is continuously supplied through a water supply pipe after adjusting the water so as to obtain a desired mortar property, and pumps the mortar produced by mixing the dry mortar and the water through a pumping hose in a pumping section; an operation switching unit for switching between an operating state and an operation stop state of the kneading pump; A water meter installed in the water supply pipe; A calculation data storage unit for storing calculation constants corresponding to mortar types; a set injection amount storage unit for storing a set injection amount of mortar for the injection hole; a discharge amount calculation unit that extracts the corresponding calculation constant from the calculation data storage unit according to the input mortar type, and calculates a calculated discharge amount corresponding to the supply water amount per unit time taken from the water meter during operation of the kneading pressure pump that pressure-feeds the mortar based on the calculation constant; a reference injection determination unit that integrates the calculated discharge amount and compares it with the set injection amount to determine whether the integrated calculated discharge amount is equal to or greater than the set injection amount; A mortar injection management system characterized in that it outputs information indicating that the standard amount has been cleared when the accumulated calculated discharge amount is equal to or greater than the set injection amount.

2. the calculation data storage unit stores a discharge amount calculation formula into which the calculation constants are substituted to calculate a calculated discharge amount; 2. The mortar injection management system according to claim 1, wherein the discharge amount calculation unit calculates the calculated discharge amount by substituting the extracted calculation constant into the discharge amount calculation formula.

3. The calculation data storage unit stores a calculation constant corresponding to a mortar type and a water supply amount per unit time taken from the water meter, 2. The mortar injection management system according to claim 1, wherein the discharge rate calculation unit calculates the calculated discharge rate by correcting a standard discharge rate of the kneading pressure pump by the calculation constant.

4. A pressure sensor installed in the pressure feed hose; a set injection pressure storage unit for storing a set injection pressure of mortar for the injection hole; The reference injection determination unit determines whether the injection pressure measured by the pressure sensor is equal to or greater than the set injection pressure, A mortar injection management system as described in any one of claims 1 to 3, characterized in that when the accumulated calculated discharge volume is equal to or greater than the set injection volume and the measured injection pressure is equal to or greater than the set injection pressure, information indicating that the standard volume has been cleared is output.

5. A mortar injection management system according to any one of claims 1 to 3, characterized in that the information indicating that the standard amount has been cleared is output to the mobile terminal so that the information indicating that the standard amount has been cleared is displayed on the mobile terminal.

6. The mortar type is input from the mobile terminal, The mortar injection management system according to claim 5, wherein the operation switching unit for switching between an operating state and an operation stop state of the kneading pressure pump is provided in the mobile terminal.

7. A mortar injection management system as described in any one of claims 1 to 3, characterized in that it is provided with a construction record storage unit that stores identification information of an injection hole through which mortar is injected and a cumulative calculated discharge amount for the injection hole corresponding to the identification information.

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