Mortar injection management system

Abstract

This allows for the accurate calculation of the amount of mortar to be injected into the injection hole, ensuring that the required amount of mortar is reliably injected into the injection hole. [Solution] A mortar injection management system 1 stores a calculation constant corresponding to the type of mortar, a discharge volume calculation formula, and an initial value of a correction coefficient. The calculation constant, the initial value of the correction coefficient, and the amount of water supplied for a predetermined time, corresponding to the mortar M to be used, are substituted into the discharge volume calculation formula to calculate the cumulative value of the calculated discharge volume. The correction coefficient is calculated by comparing the cumulative value of the calculated discharge volume with the actual discharge volume of the mortar M to be used for a predetermined time, obtained by pre-operating the mixing pump 3. The calculated discharge volume is calculated using the discharge volume calculation formula into which the amount of water supplied per unit time taken from the water meter 306 during operation, the calculation constant, and the calculated correction coefficient have been substituted. The cumulative calculated discharge volume is calculated by integrating the calculated discharge volumes.

Description

Technical Field

[0001] The present invention relates to a mortar injection management system that calculates the mortar injection amount for each injection hole when injecting mortar into the ground injection hole for ground reinforcement.

Background Art

[0002] Conventionally, as a system for calculating the mortar injection amount for each injection hole when injecting mortar into the ground injection hole for ground reinforcement, there are the rock bolt method management systems of Patent Documents 1 and 2. This rock bolt method management system measures the flow rate of mortar with a flow meter provided between the discharge port of the pressure pump and the pressure hose when injecting mortar into the rock bolt holes into which the rock bolts formed in the tunnel are inserted, and calculates the total injection amount of mortar into each rock bolt hole based on the measured flow rate of the flow meter during the operation period from the start to the stop of the operation of the pressure pump.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, although a general flow meter can accurately measure the flow rate of a fluid with low viscosity such as a low-viscosity liquid or gas, it usually deviates significantly from the actual flow rate when measuring the flow rate of a highly viscous fluid such as mortar. Therefore, when calculating the total injection amount of mortar into the injection hole based on the measured flow rate of the flow meter during the operation period from the start to the stop of the operation of the pressure pump as in the systems of Patent Documents 1 and 2, there is a problem that the error from the actual mortar injection amount into the injection hole becomes large.

[0005] In view of the above problems, the present invention is proposed to provide a mortar injection management system that can accurately calculate the amount of mortar to be injected into injection holes in the ground using a mixing and pumping pump for ground reinforcement, and can reliably inject the necessary amount of mortar into the injection holes. [Means for solving the problem]

[0006] The mortar injection management system of the present invention comprises: a mixing section to which dry mortar is continuously supplied in a fixed quantity, to which water is supplied via a water supply pipe adjusted to achieve the desired mortar properties, a mixing pump that pumps the mortar produced by mixing the dry mortar and the water via a pressure pump hose, an operation switching unit that switches the operation of the mixing pump on and off, a water flow meter installed on the water supply pipe, a calculation constant corresponding to the type of mortar, a discharge volume calculation formula that calculates the discharge volume by substituting the calculation constant, a correction coefficient, and the amount of supplied water, and an initial value of the correction coefficient, and a calculation data storage unit that stores a calculation constant corresponding to the type of mortar, a discharge volume calculation formula that calculates the discharge volume by substituting the calculation constant corresponding to the mortar to be used, the initial value of the correction coefficient, and the amount of supplied water for a predetermined time into the discharge volume calculation formula to calculate the cumulative value of the discharge volume, and the mixing pump is pre-operated to obtain the value of the mortar to be used The system is characterized by comprising: a correction coefficient calculation unit that calculates the correction coefficient by comparing the measured discharge volume of mortar over a predetermined time with the cumulative value of the calculated discharge volume; a correction coefficient storage unit that stores the correction coefficient calculated in accordance with the mortar to be used; a set injection amount storage unit that stores the set injection amount of mortar for the injection hole; a cumulative discharge volume calculation unit that extracts the calculation constant, the discharge volume calculation formula and the correction coefficient corresponding to the mortar to be used, calculates the calculated discharge volume using the discharge volume calculation formula into which the supply water per unit time taken from the water meter during the operation of the mixing pump that pumps the mortar to be used, the calculation constant and the correction coefficient are substituted, calculates the cumulative discharge volume by accumulating the calculated discharge volume; and an injection amount management unit that determines whether the cumulative discharge volume is equal to or greater than the set injection amount. According to this, in a configuration where a mixing pump continuously supplies a fixed amount of dry mortar, and water is supplied to the mixing section via a water supply pipe in an adjusted manner to achieve the desired mortar properties, the actual volume of mortar discharged from the mixing pump will usually differ from the standard discharge volume when the amount of water supplied via the water supply pipe increases or decreases. However, by calculating a correction coefficient based on the measured discharge volume of mortar over a predetermined period obtained by pre-operating the mixing pump, and then calculating the calculated discharge volume based on the correction coefficient, the calculated discharge volume can be calculated more accurately. Furthermore, by accumulating the calculated discharge volumes to obtain the cumulative discharge volume, the accurate value of the actual amount of mortar injected into each injection hole can be obtained as the cumulative discharge volume. Therefore, when injecting mortar into injection holes in the ground using a mixing pump for ground reinforcement, the amount of mortar to be injected into the injection holes can be accurately calculated, ensuring that the necessary amount of mortar is injected into the injection holes, and enabling appropriate construction management of mortar injection. Furthermore, by determining whether the calculated discharge volume is equal to or greater than the set injection volume, it is possible to accurately determine whether the necessary mortar has been injected into the injection hole and to notify the on-site workers accordingly.

[0007] The mortar injection management system of the present invention is characterized in that the calculation data storage unit stores the specific gravity of powdered dry mortar corresponding to the type of mortar, and the correction coefficient calculation unit calculates the measured discharge volume of the mortar to be used for a predetermined time from the measured discharge weight of the mortar to be used for a predetermined time obtained by pre-operating the mixing and pumping pump, using the specific gravity of the dry mortar corresponding to the mortar to be used. According to this method, for example, by pre-operating a mixing and pumping pump and measuring the actual discharge weight of the mortar to be used over a predetermined period of time on-site using a weighing scale, the actual discharge volume of the mortar to be used over a predetermined period of time can be easily calculated using the specific gravity of the dry mortar corresponding to the mortar to be used.

[0008] The mortar injection management system of the present invention is characterized by comprising: a pressure sensor installed in the pumping hose for measuring the injection pressure of mortar pumped by the mixing pumping pump; a set injection pressure storage unit for storing the set injection pressure of mortar for the injection hole; and an injection pressure management unit for determining whether the injection pressure measured by the pressure sensor is equal to or greater than the set injection pressure. According to this, for example, when performing post-injection mortar injection, in which mortar is injected to fix rock bolts into injection holes in the ground, by accurately calculating and recognizing the amount of mortar to be injected, and by determining whether the measured injection pressure of the mortar is equal to or greater than the set injection pressure, it is possible to ensure that the necessary amount of mortar is injected into the injection holes and to manage the construction of mortar injection.

[0009] The mortar injection management system of the present invention is characterized in that, when the cumulative calculated discharge amount of mortar to be used is equal to or greater than the set injection amount, it outputs information indicating that the standard amount has been met to the mobile terminal so that it can be displayed on the mobile terminal, and also displays this information on the display unit of the injection management device. According to this, workers with mobile devices can recognize in real time that the necessary mortar injection has been performed, and workers looking at the display of the injection management device can also recognize in real time that the necessary mortar injection has been performed, thereby improving the overall work efficiency of the mortar injection work.

[0010] The mortar injection management system of the present invention is characterized in that the type of mortar is input from the mobile terminal, and the mobile terminal is provided with an operation switching unit that switches between starting and stopping the operation of the mixing and pumping pump. According to this, workers with mobile devices can input mortar types and operate mixing and pumping pumps without being tied to a specific location, thereby improving the overall efficiency of mortar injection work.

[0011] The mortar injection management system of the present invention is characterized by comprising a construction record storage unit that stores identification information of injection holes into which mortar is injected, and the cumulative calculated discharge volume amount for the injection holes corresponding to the identification information. According to this method, the cumulative corrected discharge volume to the injection hole of the identification information, in other words, the amount of mortar injected to the injection hole of the identification information, can be recorded and retained, and used as a quality control record for the mortar injection work.

[0012] The mortar injection management system of the present invention includes a calculation data storage unit that stores a calculation constant corresponding to the type of mortar, a discharge volume calculation formula that calculates the discharge volume by substituting the calculation constant, a correction coefficient, and the amount of supplied water, and an initial value of the correction coefficient, and a calculation data storage unit that stores a calculation constant corresponding to the type of mortar to be used, the initial value of the correction coefficient, and the amount of supplied water for a predetermined time into the discharge volume calculation formula to calculate the cumulative value of the discharge volume, and the actual discharge volume of the mortar to be used obtained by pre-operating the mixing pump for a predetermined time and the cumulative value of the calculated discharge volume, and the correction coefficient The system is characterized by comprising: a correction coefficient calculation unit that calculates a correction coefficient; a correction coefficient storage unit that stores the correction coefficient calculated in accordance with the mortar to be used; and an integrated discharge volume calculation unit that extracts the calculation constant, the discharge volume calculation formula and the correction coefficient corresponding to the mortar to be used, calculates the calculated discharge volume using the discharge volume calculation formula into which the supply water per unit time taken from the water meter during the operation of the mixing pump that pumps the mortar to be used, the calculation constant and the correction coefficient have been substituted, and calculates the integrated discharge volume by accumulating the calculated discharge volume. According to this method, a correction coefficient is calculated based on the measured discharge volume of mortar obtained over a predetermined time by pre-operating the mixing and pumping pump. By calculating the calculated discharge volume based on the correction coefficient, the calculated discharge volume can be calculated more accurately. Furthermore, by integrating the calculated discharge volumes to obtain the integrated discharge volume, the accurate value of the actual amount of mortar injected into each injection hole can be obtained as the integrated discharge volume. Therefore, when injecting mortar into injection holes in the ground using a mixing and pumping pump for ground reinforcement, the amount of mortar injected into each injection hole can be accurately calculated, ensuring that the necessary amount of mortar is injected into each injection hole, and enabling proper construction management of mortar injection. [Effects of the Invention]

[0013] According to the mortar injection management system of the present invention, when injecting mortar into the injection holes of the ground for ground reinforcement using a kneading and pumping pump, the injection amount of mortar into the injection holes can be accurately calculated, and the necessary mortar injection into the injection holes can be surely performed.

Brief Description of the Drawings

[0014] [Figure 1] Block diagram showing the overall configuration of the mortar injection management system according to an embodiment of the present invention. [Figure 2] Cross-sectional explanatory view of the kneading and pumping pump in the embodiment. [Figure 3] (a) is a block diagram of a mobile terminal in the mortar injection management system of the embodiment, and (b) is a block diagram of a management recording device in the mortar injection management system of the embodiment. [Figure 4] (a) is a diagram showing an example of a measurement operation switching unit in the embodiment, and (b) is a diagram showing an example of a notification unit in the embodiment. [Figure 5] (a) to (d) are cross-sectional explanatory views for explaining examples of mortar injection into injection holes where mortar injection management is performed in the mortar injection management system of the embodiment. [Figure 6] Flowchart showing the mortar injection pressure management process in the mortar injection management system of the embodiment. [Figure 7] Flowchart showing the mortar injection amount management process in the mortar injection management system of the embodiment. [Figure 8] Explanatory diagram showing an example of data corresponding to the mortar type stored in the calculation data storage unit in the mortar injection management system of the embodiment.

Modes for Carrying Out the Invention

[0015] [Mortar Injection Management System of the Embodiment] As shown in FIG. 1, the mortar injection management system 1 according to an embodiment of the present invention includes an injection management device 2 composed of a server, a personal computer, or a group of computers connected by a communication line, a kneading and pumping pump 3, a mobile terminal 4 such as a smartphone, a dedicated portable terminal, or a portable personal computer, and a management recording device 5 composed of a server, a personal computer, or a group of computers connected by a communication line. The injection management device 2, the kneading and pumping pump 3, the mobile terminal 4, and the management recording device 5 are communicatively connected via an IoT gateway 6.

[0016] The injection management device 2 includes a control unit 2 such as an MPU or a CPU, a storage unit 22 composed of an HDD, an SSD, a ROM, a RAM, etc., an input unit 23 such as a mouse, a keyboard, or a touch panel responsible for inputting predetermined data such as the mortar type of the mortar M to be used, 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] In the storage unit 22, there are provided a control program storage unit 221 for storing a control program responsible for controlling the injection management device 2 in cooperation with the control unit 21, a calculation data storage unit 222 for storing calculation constants corresponding to the mortar type for calculating the discharge amount of the mortar M to be used, etc., a set injection amount storage unit 223 for storing the set injection amount of the mortar M for the injection hole 703, and a correction coefficient storage unit 224 for storing the correction coefficient calculated corresponding to the mortar M to be used. The mortar type corresponding to the calculation constant in the calculation data storage unit 222 is the type of the dry mortar DM corresponding to the mortar M to be used (see FIGS. 1 and 2).

[0018] In the calculation data storage unit 222, for example, calculation constants A and B corresponding to the mortar type, a discharge volume calculation formula for calculating the discharge volume by substituting the calculation constants A, B, the correction coefficient C, and the supply water volume into, for example, the calculated discharge volume Y = C(A × supply water volume X + B), an initial value of the correction coefficient C such as the numerical value "1", and the specific gravity of the dry mortar DM of the powder corresponding to the mortar type are stored (see FIG. 8).

[0019] Furthermore, the memory unit 22 is provided with a set injection pressure storage unit 226 in which the set injection pressure of mortar M for the injection hole 703 is stored, and a maximum injection pressure storage unit 226 in which the maximum injection pressure measured by the pressure sensor 313 from the start of operation of the mixing pump 3 is stored in a manner that is sequentially updated. The maximum injection pressure storage unit 226 stores the maximum injection pressure from the start of operation of the mixing pump 3 in a manner that is sequentially updated when injecting mortar M into a specific injection hole 703, and the maximum injection pressure stored in the maximum injection pressure storage unit 226 is reset when the mixing pump 3 starts up again after the mixing pump 3 has stopped running, and the maximum injection pressure stored in the maximum injection pressure storage unit 226 is stored as the final injection pressure when the measurement of the injection pressure of mortar M stops.

[0020] The control unit 21 works in cooperation with the control program in the control program storage unit 221 and functions as the cumulative discharge volume calculation unit 211, the injection volume management unit 212, the correction coefficient calculation unit 213, and the injection pressure management unit 214. The cumulative discharge volume calculation unit 211 continuously recognizes the amount of water supplied per unit time taken from the water meter 306 when the mixing pump 3 that pumps mortar M is in operation, and extracts calculation constants A, B, etc. and the discharge volume calculation formula from the calculation data storage unit 222 according to the type of mortar M to be used, which is input via the communication line from the mobile terminal 4 or input from the input unit 23, and extracts the stored correction coefficient C from the correction coefficient storage unit 224 and pre-operates the mixing pump 3. Based on the measured discharge volume of the mortar M to be used (the state after mixing dry mortar DM with water), a correction coefficient C is extracted from the correction coefficient storage unit 224. For example, the discharge volume is calculated using the discharge volume calculation formula: Y=C(A × supply water amount X + B), which is obtained by substituting the supply water amount per unit time taken from the water meter 306 during the operation of the mixing pump 3 that pumps the mortar M to be used, the calculated constants A and B, and the correction coefficient C. The calculated discharge volume is then accumulated to calculate the cumulative discharge volume.

[0021] The injection volume management unit 212 compares the cumulative discharge volume calculated by the cumulative discharge volume calculation unit 211 from the start of injection of mortar M into a specific injection hole 703 with the set injection volume and determines whether the cumulative discharge volume is equal to or greater than the set injection volume. Furthermore, if the injection volume management unit 212 determines that the cumulative discharge volume is equal to or greater than the set injection volume, it causes the injection volume notification unit 320q to notify. In this embodiment, if the injection volume management unit 212 determines that the cumulative discharge volume is equal to or greater than the set injection volume, it transmits a determination signal for clearing the set injection volume to the operation control unit 315 so that it is notified by the notification unit 320 provided on the mixing and pumping pump 3. The operation control unit 315, upon receiving the predetermined determination signal, controls the injection volume notification unit 320q to notify that the cumulative discharge volume has reached equal to or greater than the set injection volume (see Figure 4(b)).

[0022] In this example, the notification unit 320 receives a determination signal for clearing the set injection pressure from the injection pressure management unit 215 of the injection management device 2 when it is determined that the measured injection pressure of the mortar M to be used is equal to or greater than the set injection pressure. The operation control unit 315 controls the notification unit 320p to notify that the measured injection pressure of the mortar M to be used has reached when it is determined that the cumulative calculated discharge volume of the mortar M to be used is equal to or greater than the set injection volume. The system includes an injection volume notification unit 320q, which, when received from the quasi-injection volume determination unit 212, notifies the system under the control of the operation control unit 315 that the cumulative calculated discharge volume has reached or exceeded the set injection volume, and an operation operation notification unit 320r, which receives an operation start notification signal and an operation stop notification signal for the kneading pump 3 from the control unit 21 of the injection management device 2, and, under the control of the operation control unit 315, notifies that the pump is in operation when an operation start notification signal is received, and stops notifying that the pump is in operation when an operation stop notification signal is received (see Figures 4 and 1).

[0023] An example of the notification unit 320 shown in Figure 4(b) consists of an injection pressure notification unit 320p, which is a notification lamp that lights up in a predetermined color such as red to notify when the measured injection pressure of the injected mortar M reaches or exceeds a set injection pressure; an injection volume notification unit 320q, which is a notification lamp that lights up in a predetermined color such as yellow to notify when the cumulative calculated discharge volume of the injected mortar M reaches or exceeds a set injection volume; and an operation notification unit 320r, which is a notification lamp that lights up in a predetermined color such as green to indicate that the unit is in operation and turns off when the unit is stopped. The method of notification to the field worker by the notification unit 320, or by the injection pressure notification unit 320p, the injection volume notification unit 320q, and the operation notification unit 320r, is appropriate. For example, notification can be given by using lamps with appropriate differences in light color or by turning them on and off, or by using a speaker to give sound, or by combining lamps and sound.

[0024] The correction coefficient calculation unit 213 calculates the cumulative value of the calculated discharge volume by substituting, for example, the calculation constants A and B corresponding to the mortar M to be used, the initial value of the correction coefficient C "1", and the amount of water supplied for a predetermined time into the discharge volume calculation formula: Y=C(A × amount of water supplied X + B), and then compares the measured discharge volume of the mortar M to be used for a predetermined time, obtained by pre-operating the mixing and pumping pump 3, with the cumulative value of the calculated discharge volume to calculate the correction coefficient C.

[0025] Furthermore, the correction coefficient calculation unit 213 calculates the measured discharge volume of the mortar M to be used for a predetermined time, using the specific gravity of the dry mortar DM corresponding to the mortar M to be used, which is stored in the calculation data storage unit 222, from the measured discharge weight of the mortar M to be used for a predetermined time obtained by pre-operating the mixing and pumping pump 3. This measured discharge volume is used in comparison with the cumulative value of the calculated discharge volume to calculate the correction coefficient C.

[0026] When obtaining the measured discharge amount of mortar M to be used over a predetermined time, for example, input from the input unit 23 allows selection of the mortar type of dry mortar DM corresponding to the mortar M to be used and the calibration mode. The mixing and pumping pump 3 is operated for a predetermined time, such as 30 seconds, to mix the dry mortar DM and water W under the same conditions as when the mortar M is pumped in, thereby producing the mortar M. The produced mortar M is then collected in a container 321. The weight of the mortar M collected in the container 321 is measured by a weighing scale 322, and the measured value of the measured discharge weight over the predetermined time is obtained. The obtained measured discharge weight is input to the injection management device 2 from the input unit 23, and by inputting calibration execution from the input unit 23, the correction coefficient calculation unit 213 performs processing such as calculating the correction coefficient C (see Figures 1 and 2).

[0027] The injection pressure management unit 214, when injecting mortar M into a specific injection hole 703, sequentially updates the maximum injection pressure measured by the pressure sensor 313 from the start of operation of the mixing pump 3 and stores it in the maximum injection pressure storage unit 226. When the mixing pump 3 is stopped and the next mixing pump 3 is started, the unit resets the maximum injection pressure stored in the maximum injection pressure storage unit 313, and when the measurement of the injection pressure of mortar M stops, it stores the maximum injection pressure stored in the maximum injection pressure storage unit 226 as the final injection pressure.

[0028] In this embodiment, the injection pressure management unit 214, in the measurement state, stores the maximum injection pressure measured by the pressure sensor 313 in order to sequentially update it in response to the reception of an operation start signal from the operation control unit 315 of the mixing and pumping pump 3. After the mixing and pumping pump 3 has stopped operating, the unit resets the maximum injection pressure stored in the maximum injection pressure storage unit 226 in response to the reception of the next operation start signal from the operation control unit 315 of the mixing and pumping pump 3, and stores the maximum injection pressure measured by the pressure sensor 313 in order to sequentially update it in response to the reception of a measurement stop signal from the operation control unit 315 that turns off the measurement operation, and stores the maximum injection pressure stored in the maximum injection pressure storage unit 226 as the final injection pressure.

[0029] Furthermore, the injection pressure management unit 214 determines whether the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure, and when the measured injection pressure of the pressure sensor 313 reaches equal to or greater than the set injection pressure, it causes the injection pressure notification unit 320p to notify.In this embodiment, the injection pressure management unit 214 determines whether the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure, and when it determines that the measured injection pressure of the pressure sensor 313 is equal to or greater than the set injection pressure, it transmits a determination signal for clearing the set injection pressure to the injection pressure notification unit 320p, and the operation control unit 315 controls the injection pressure notification unit 320p to notify when the measured injection pressure of the mortar M to be used has reached equal to or greater than the set injection pressure.

[0030] Furthermore, if there is a risk that the high injection pressure measured in the initial stages of the pump operation will reach the set injection pressure, the injection pressure management unit 214 may, in the injection of mortar M into a specific injection hole 703, after a predetermined set time has elapsed from the start of injection pressure measurement or the start of operation of the first mixing pump 3, determine whether the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure, and execute a process to notify the injection pressure notification unit 320p if the injection pressure measured by the pressure sensor 313 reaches equal to or greater than the set injection pressure.

[0031] As shown in Figure 2, the mixing and pumping pump 3 has a funnel-shaped hopper 301 and a cylindrical section 304 that is formed to extend in a straight line and is connected internally to the discharge port 302 of the hopper 301 and to the water inlet 303 located closer to the tip than the discharge port 302. The cylindrical section 304 is inclined so that the tip is lower. A water supply pipe 305 is connected to the water inlet 303 to supply water W, and a water flow meter 306 is installed on the water supply pipe 305.

[0032] Inside the cylindrical section 304, there is a stirring blade 307 for dry mixing of dry mortar DM, and a stirring rod 308 connected axially to the stirring blade 307. A motor 309 located at the rear of the cylindrical section 304 allows the stirring blade 307 and the stirring rod 308 to rotate. Dry mortar DM, introduced into the cylindrical section 304 from the discharge port 302 of the hopper 301, is carried to the front end of the cylindrical section 304 by the rotation of the stirring blade 307, and mixed with water W supplied through the water supply pipe 305 and injected from the water inlet 303 by the rotation of the stirring rod 308. The part where the stirring rod 308 rotates corresponds to the mixing section 310, where dry mortar DM is continuously supplied in a fixed quantity. Water W is supplied to the mixing section 310 via the water supply pipe 305, adjusted to achieve the desired mortar properties.

[0033] The mortar M, produced by mixing dry mortar DM and water W, is further agitated in a pressurized pump unit 311, where it is mixed by the rotation of a metal screw rotor within a rubber inner spiral stator, and then pumped through a pressurized hose 312. A pressure sensor 313 is installed on the pressurized hose 312.

[0034] The mixing and pumping pump 3 is equipped with an operation switching unit 314 that switches the operating state of the mixing and pumping pump 3 between operation and stop, and causes the operation control unit 315 to send operation start signals and operation stop signals to the injection management device 2, and an operation control unit 315 that controls the drive of the mixing and pumping pump 3 according to the input of the operation switching unit 314 (see Figure 1). The water volume meter 306, pressure sensor 313, and operation control unit 315 installed on the mixing and pumping pump 3 are connected to a communication line via a communication interface 316 and communicate with the injection management device 2 via an IoT gateway 6. In addition, the operation control unit 315 is communicated with a mobile terminal 4 via the IoT gateway 6. The injection management device 2 receives the operation start and operation stop signals for mortar injection output from the operation control unit 315 of the mixing and pumping pump 3 via the communication line.

[0035] Furthermore, the mixing and pumping pump 3 is equipped with a measurement operation switching unit 330 that switches the start and stop of measurement of the injection pressure of mortar M measured by the pressure sensor 313, and the start and stop of measurement of the supply water amount measured by the water volume meter 306 to calculate the cumulative discharge volume, thereby switching the ON state and OFF state of a predetermined measurement operation (see Figures 1 and 4). When the measurement operation switching unit 330 is set to the ON state, a measurement start signal is transmitted from the operation control unit 315 to the injection management device 2, and the cumulative discharge volume calculation unit 211 and the injection volume management unit 212 perform predetermined processing on the mortar injection amount, while in parallel, the injection pressure management unit 214 performs predetermined processing on the mortar injection pressure.

[0036] The measurement operation switching unit 330 in Figure 4(a) switches between a pre-injection mode in which mortar M is injected into the injection hole 703 before the lock bolt 704 is inserted, and a post-injection mode in which mortar M is injected into the injection hole 703 after the lock bolt 704 has been inserted and the vicinity of the hole opening has been closed by, for example, an expanded packer 705. The unit includes a mode switching switch 330p which transmits a selection signal for the pre-injection mode and a selection signal for the post-injection mode from the operation control unit 315 to the injection management device 2, a measurement start switch 330q which transmits a measurement start signal from the operation control unit 315 to the injection management device 2 to turn on the measurement operation in response to the input, and a measurement stop switch 330r which transmits a measurement stop signal from the operation control unit 315 to the injection management device 2 to turn off the measurement operation in response to the input.

[0037] As shown in Figure 3(a), the mobile terminal 4 comprises a control unit 41 such as a CPU, a storage unit 42 composed of ROM, RAM, flash memory, etc., an input unit 43 such as a touch panel, mouse, keyboard, etc., a display unit 44 such as a touch panel, display, etc., which also serves as the input unit 33, and a communication interface 45 for connecting the mobile terminal 4 to a communication line. The storage unit 42 is provided with a control program storage unit 421 that stores a control program that works in cooperation with the control unit 41 to control the mobile terminal 4.

[0038] The mobile terminal 4 is connected to the injection management device 2 and the mixing and pumping pump 3 via the communication interface 45 and the IoT gateway 6. When the injection pressure management unit 215 of the injection management device 2 determines that the set injection pressure has been cleared and sends a determination signal to the mobile terminal 4, or when it determines that the set injection amount has been cleared and sends a determination signal to the mobile terminal 4, the control unit 41 of the mobile terminal 4 displays the information that the set injection pressure has been cleared or the information that the set injection amount has been cleared in a predetermined format upon receiving the determination signal. Furthermore, when the mobile terminal 4 transmits the mortar type to the injection management device 2, the injection management device 2 receives the mortar type transmitted to the injection management device 2 via the input unit 43 of the mobile terminal 4, and the control unit 21 of the injection management device 2 uses the received mortar type to execute a predetermined process of the cumulative discharge volume calculation unit 211.

[0039] The mobile terminal 4 may also be equipped with an operation operation switching unit 411 that performs the same function as the operation operation switching unit 314 that switches the operating state and operation stop of the mixing pump 3. In addition to a configuration in which both the operation operation switching unit 314 of the mixing pump 3 and the operation operation switching unit 411 of the mobile terminal 4 are provided, a configuration in which only the operation operation switching unit 411 of the mobile terminal 4 is provided is also suitable. For example, the operation operation switching unit 411 of the mobile terminal 4 transmits an operation start signal and an operation stop signal to the mixing pump 3 in response to input from the input unit 43. The operation control unit 315 of the mixing pump 3 starts operation of the mixing pump 3 and transmits an operation start signal to the injection management device 2 in response to receiving an operation start signal from the mobile terminal 4, and stops operation of the mixing pump 3 and transmits an operation stop signal to the injection management device 2 in response to receiving an operation stop signal from the mobile terminal 4.

[0040] As shown in Figure 3(b), the management record device 5 comprises a control unit 51 such as a CPU, a storage unit 52 composed of ROM, RAM, etc., an input unit 53 such as a mouse or keyboard, an output unit 54 such as a display or printer, and a communication interface 55 that connects the management record device 5 to a communication line. The storage unit 52 is provided with a control program storage unit 521 that stores a control program that works in cooperation 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 report formats.

[0041] The construction record storage unit 522 stores, in correspondence, 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 final injection pressure and cumulative discharge volume for the injection hole 703 of the identification information, which are acquired by the injection management device 2 for the injection hole 703 of the identification information and transmitted to the management record device 5 via the communication line. In addition, the identification information such as the identification number of the injection hole 703 into which the mortar M to be used is injected may be automatically assigned by increasing the number, for example, in response to the measurement start input from the input unit 23 of the injection management device 2, and the identification information such as the identification number of the injection hole 703 assigned by the injection management device 2 may be transmitted to the management record device 5. Alternatively, in response to the input of the measurement start switch 330q of the measurement operation switching unit 330, a measurement start signal may be transmitted from the operation control unit 315 of the kneading pump 3 to the injection management device 2. Upon receiving the measurement start signal, the injection management device 2 may automatically assign identification information, such as by increasing the number, and transmit the identification information, such as the identification number of the injection hole 703, assigned by the injection management device 2 to the management recording device 5.

[0042] The mortar injection management system 1 of this embodiment is performed on post-injection type constructions in which rock bolts 704 are inserted into injection holes 703 in the ground 701 and then mortar M is injected and fixed. For example, it is performed on post-injection type constructions in which mortar is injected into the injection holes 703 shown in Figure 5 using a pressure hose 312 and a packer 705. In the example in Figure 5, sprayed concrete 702 is sprayed onto the inner circumference of the ground 701 of the tunnel, and injection holes 703 are formed by drilling from the inner circumference of the tunnel.

[0043] A cloth, bag-shaped packer 705 is fitted around the base of the rock bolt 704, which is driven into the injection hole 703. A portion of the pressure hose 312 is routed along the longitudinal direction of the rock bolt 704, and most of the exhaust return pipe 706 is routed along the longitudinal direction of the rock bolt 704. The packer 705 is positioned near the base of the rock bolt 704, so as to enclose the rock bolt 704, the pressure hose 312, and the exhaust return pipe 706 together, and is attached by fastening both longitudinal ends of the rock bolt 704 with fastening bands. The pressure hose 312 is provided so as to be able to inject the mortar M to be used into the packer 705 and the injection hole 703. A discharge port for the mortar M is provided protruding from the packer 705 toward the tip of the rock bolt 704, and a notched opening is formed inside the packer 705 that has a larger opening area than the discharge port.

[0044] In this example, when injecting mortar into the injection hole 703, a lock bolt 704 to which a bag-shaped packer 705, a pressure hose 312, and an exhaust return pipe 706 are attached is inserted into the injection hole 703 from the tip side. Mortar is injected using the mixing and pumping pump 3 and the pressure hose 312, and mortar M is released from the notched opening of the pressure hose 312 inside the packer 705, causing the packer 705 to expand and the expanded packer 705 to first close the vicinity of the injection hole 703. After that, mortar M is injected into the injection hole 703 whose vicinity is closed by the expanded packer 705, and air inside 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 finished and the mortar M returns from the exhaust return pipe 706 to the space on the inner circumference side of the tunnel. Ultimately, the pressure-injected mortar M penetrates into the gaps surrounding the injection holes 703 (see Figures 5(a) to (d)).

[0045] Then, in the injection management process of the mortar injection management system 1, as shown in Figure 6, when the post-injection mode is selected by input to the mode switching switch 330p of the measurement operation switching unit 330, a post-injection mode selection signal is transmitted from the operation control unit 315 of the mixing and pumping pump 3 to the injection management device 2, and the control unit 21 of the injection management device 2 enters a state in which it executes processing in post-injection mode in response to the reception of the post-injection mode selection signal (S101). Furthermore, in response to input to the measurement start switch 330q of the measurement operation switching unit 330, the operation control unit 315 of the mixing and pumping pump 3 transmits a measurement start signal to the injection management device 2 to turn on the measurement operation, and the control unit 21 of the injection management device 2 enters a state in which it executes predetermined processing to calculate the cumulative discharge volume by measuring the injection pressure of the mortar M using the pressure sensor 313 and the supply water volume using the water volume meter 306 (S102).

[0046] Next, when the operation switching unit 314 receives input to start operation of the mixing and pumping pump 3, the mixing and pumping pump 3 starts operating and injecting mortar M into the injection hole 703 corresponding to specific identification information. Simultaneously, the operation control unit 315 transmits an operation start signal to the injection management device 2. The injection pressure management unit 215 of the injection management device 2, upon receiving the operation start signal from the operation control unit 315 of the mixing and pumping pump 3, resets the maximum injection pressure if the maximum injection pressure is stored in the maximum injection pressure storage unit 228. Furthermore, the injection pressure management unit 215 or the control unit 21 transmits an operation start notification signal to the operation control unit 315 of the mixing and pumping pump 3. The operation control unit 315, upon receiving the operation start notification signal, notifies the operation is in progress using the operation notification unit 320r (S103). In this case, identification information such as the identification number of the injection hole 703 where mortar is injected may be stored in advance by the injection management device 2, or it may be automatically assigned by the injection pressure management unit 215 of the injection management device 2 in response to the receipt of the measurement start signal.

[0047] The injection pressure management unit 215 continuously receives and recognizes the injection pressure measured by the pressure sensor 313 of the mortar M being pumped through the pressure hose 312, records it sequentially in a predetermined storage area of ​​the storage unit 22, and acquires the maximum injection pressure measured by the pressure sensor 313 since the start of operation of the mixing and pumping pump 3, updating it sequentially, and stores it in the maximum injection pressure storage unit 228 (S104).

[0048] Subsequently, when the operation switching unit 314 receives input to stop the operation of the mixing and pumping pump 3, the operation of the mixing and pumping pump 3 is stopped for the injection hole 703 corresponding to the specific identification information, and the injection of mortar M is stopped. At the same time, the operation control unit 315 transmits an operation stop signal to the injection management device 2, and the injection pressure management unit 215 or control unit 21 transmits an operation stop notification signal to the operation control unit 315 of the mixing and pumping pump 3. In response to receiving the operation stop notification signal, the operation control unit 315 notifies that the operation has stopped by turning off the operation notification unit 320r (S105).

[0049] Furthermore, when the operation switching unit 314 receives input for the next start of operation of the mixing and pumping pump 3, the operation of the mixing and pumping pump 3 is started for the injection hole 703 corresponding to specific identification information, and the injection of mortar M begins. At the same time, the operation control unit 315 transmits an operation start signal to the injection management device 2, and the injection pressure management unit 215 of the injection management device 2 resets the maximum injection pressure stored in the maximum injection pressure storage unit 228 in response to receiving the operation start signal from the operation control unit 315 of the mixing and pumping pump 3. Furthermore, the injection pressure management unit 215 or the control unit 21 transmits an operation start notification signal to the operation control unit 315 of the mixing and pumping pump 3, and the operation control unit 315 notifies that the pump is in operation using the operation notification unit 320r in response to receiving the operation start notification signal (S106).

[0050] The injection pressure management unit 214 determines whether the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure, and if it determines that the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure, it transmits a determination signal that the set injection pressure has been cleared to the injection pressure notification unit 320p (S107). In response to receiving the determination signal that the set injection pressure has been cleared, the operation control unit 315 of the mixing pump 3 notifies the injection pressure notification unit 320p that the injection pressure measured by the pressure sensor 313 has reached equal to or greater than the set injection pressure.

[0051] Furthermore, when the operation switching unit 314 receives input to stop the operation of the mixing and pumping pump 3, the operation of the mixing and pumping pump 3 is stopped for the injection hole 703 corresponding to specific identification information, and the injection of mortar M is stopped. At the same time, the operation control unit 315 transmits an operation stop signal to the injection management device 2, and the injection pressure management unit 215 or control unit 21 transmits an operation stop notification signal to the operation control unit 315 of the mixing and pumping pump 3. In response to receiving the operation stop notification signal, the operation control unit 315 notifies that the operation is stopped by turning off the operation notification unit 320r (S108).

[0052] Here, when the on-site worker determines that the injection of mortar M into a specific injection hole 703 is sufficient, the measurement stop switch 330r of the measurement operation switching unit 330 is activated. In response to the input of the measurement stop switch 330r of the measurement operation switching unit 330, the operation control unit 315 of the mixing and pumping pump 3 transmits a measurement stop signal to the injection management device 2 to turn off the measurement operation. In response to the receipt of the measurement stop signal, the injection pressure management unit 214 of the injection management device 2 stops the execution of predetermined processes that measure the injection pressure of mortar M using the pressure sensor 313 and the amount of water supplied using the water meter 306 to calculate the cumulative discharge volume, and stores the maximum injection pressure stored in the maximum injection pressure storage unit 226 as the final injection pressure (S109).

[0053] Furthermore, in the injection management process of the mortar injection management system 1 of this embodiment, a management process for the amount of mortar injected is performed independently in parallel with the management process for the mortar injection pressure. That is, as shown in Figure 7, as a pre-processing step, the correction coefficient calculation unit 213 of the injection management device 2 calculates the measured discharge volume of the mortar M to be used for a predetermined time from the measured discharge weight of the mortar M to be used at a predetermined time, which is obtained by pre-operating the mixing and pumping pump 3 and measuring it with the weighing scale 322, and the specific gravity of the dry mortar DM corresponding to the type of mortar to be used, which is stored in the calculation data storage unit 222 (S201).

[0054] Furthermore, the correction coefficient calculation unit 213 calculates the integrated value of the calculated discharge volume by substituting, for example, the calculation constants A and B corresponding to the mortar M to be used, the initial value "1" of the correction coefficient C, and the amount of water supplied for a predetermined time into the discharge volume calculation formula, compares the actual discharge volume of the mortar M to be used for a predetermined time with the integrated value of the calculated discharge volume, calculates the correction coefficient C, and stores the calculated correction coefficient C in the correction coefficient storage unit 224 (S202).

[0055] Next, after the processing described in S101 to S102 above, the cumulative discharge volume calculation unit 211 of the injection management device 2 receives an operation start signal from the operation control unit 315 of the mixing pump 3, and continuously receives and takes in the measured value of the supply water amount from the water meter 306 when the mixing pump 3 that pumps the mortar M is in operation. For example, it extracts the calculation constants A and B corresponding to the mortar M to be used, the discharge volume calculation formula: Y=C(A × supply water amount X + B), and the calculated correction coefficient C. Using the discharge volume calculation formula into which the supply water amount per unit time taken from the water meter 306 when the mixing pump 3 that pumps the mortar M to be used is substituted, the calculated discharge volume is calculated, and the calculated discharge volume is accumulated to calculate the cumulative calculated discharge volume (S203).

[0056] Furthermore, the method by which the cumulative discharge volume calculation unit 211 extracts the calculation constants A and B corresponding to the mortar M to be used, the discharge volume calculation formula: Y=C(A × supply water amount X + B), and the calculated correction coefficient C can be either by extracting the calculation constants A and B, the discharge volume calculation formula: Y=C(A × supply water amount X + B), and the calculated correction coefficient C from the storage unit 22, or by extracting the discharge volume calculation formula: Y=C(A × supply water amount X + B), in which the calculation constants A and B and the calculated correction coefficient C have already been substituted, from a predetermined storage area of ​​the storage unit 22.

[0057] The injection volume management unit 212 of the injection management device 2 continuously determines whether the cumulative calculated discharge volume is equal to or greater than the set injection volume (S204). If the cumulative calculated discharge volume is equal to or greater than the set injection volume, it transmits a determination signal indicating that the set injection volume has been cleared to the operation control unit 315, which controls the injection volume notification unit 320q provided on the mixing and pumping pump 3, thereby causing the injection volume notification unit 320q to notify (S205).

[0058] On-site workers can check the notification status from the injection pressure notification unit 320p and the injection volume notification unit 320q, and then make appropriate decisions to take, for example, to finish injecting mortar or to inject mortar one more time. The injection management device 2 also transmits the identification information of the injection hole 703 and the corresponding data such as the final injection pressure and the cumulative discharge volume, stored in the memory unit 22, to the management recording device 5 via the communication line, and the management recording device 5 stores this data in the construction record storage unit 522. When necessary, the management recording device 5 displays or prints the identification information of the injection hole 703 and the corresponding data in a predetermined output format in the output unit 54 in response to an output request input from the input unit 53.

[0059] According to the mortar injection management system 1 of this embodiment, a correction coefficient is calculated based on the measured discharge volume of mortar M obtained over a predetermined time by pre-operating the mixing and pumping pump 3, and the calculated discharge volume is calculated based on the correction coefficient, thereby enabling a more accurate calculation of the discharge volume. Furthermore, by accumulating the calculated discharge volumes to obtain the cumulative discharge volume, the accurate value of the actual amount of mortar M injected into each injection hole 703 can be obtained as the cumulative discharge volume. Therefore, when injecting mortar M into injection holes 703 in the ground 701 using the mixing and pumping pump 3 for ground reinforcement, the amount of mortar M to be injected into the injection holes 703 can be accurately calculated, ensuring that the necessary amount of mortar M is injected into the injection holes 703, and enabling appropriate construction management of mortar injection. In addition, by determining whether the cumulative discharge volume is equal to or greater than the set injection amount, it is possible to accurately determine whether the necessary amount of mortar M has been injected into the injection holes 703 and notify the on-site workers.

[0060] Furthermore, by pre-operating the mixing and pumping pump 3 and measuring the actual discharge weight of the mortar M to be used over a predetermined period of time on-site using a weighing scale 322, the actual discharge volume of the mortar M to be used over a predetermined period of time can be easily calculated using the specific gravity of the dry mortar DM corresponding to the mortar M to be used.

[0061] Furthermore, for example, when performing post-injection mortar injection, which involves inserting rock bolts 704 into injection holes 703 in the ground 701 and then injecting mortar M to fix it in place, by accurately calculating and recognizing the amount of mortar M to be injected, as well as determining whether the measured injection pressure of the mortar M is equal to or greater than the set injection pressure, the necessary amount of mortar M can be reliably injected into the injection holes 703, and the construction management of the mortar injection can be performed.

[0062] Furthermore, when the cumulative calculated discharge amount of mortar M used is equal to or greater than the set injection amount, information indicating that the standard amount has been cleared is output to the mobile terminal 4 so that it is displayed on the mobile terminal 4, and also displayed on the display unit 24 of the injection management device 2. This allows the worker holding the mobile terminal 4 to recognize in real time that the necessary mortar injection has been performed, and also allows the worker looking at the display unit 24 of the injection management device 2 to recognize in real time that the necessary mortar injection has been performed, thereby improving the overall work efficiency of the mortar injection work.

[0063] Furthermore, if the mortar type can be input from the mobile terminal 4, and if the mobile terminal 4 is equipped with an operation switching unit 411 for switching the start and stop operation of the mixing and pumping pump 3, then the worker holding the mobile terminal 4 can input the mortar type and operate the mixing and pumping pump 3 without being tied to a specific location, thereby improving the overall work efficiency of the mortar injection work.

[0064] Furthermore, by storing identification information for the injection holes 703 into which mortar M is injected, and the calculated cumulative discharge volume for these injection holes 703 in the construction record storage unit 522, the calculated cumulative discharge volume for these injection holes 703 can be recorded and retained, and used as a quality control record for the mortar injection work.

[0065] [Scope of the invention disclosed herein] The inventions disclosed herein include, in addition to the inventions and embodiments listed herein, the inventions disclosed herein also include, to the extent applicable, those that modify the partial content of these inventions to include other content disclosed herein, or those that add other content disclosed herein to these inventions, or those that delete the partial content to the extent that partial effects are obtained and define them as broader concepts. Furthermore, the inventions disclosed herein also include the following and modifications.

[0066] For example, in the mortar injection management system of the present invention, the calculation constant corresponding to the mortar type of dry mortar DM, the correction coefficient based on the measured discharge volume of mortar M, and the discharge volume calculation formula can be any other than those shown in the above embodiment, as long as they can accurately calculate the cumulative discharge volume of mortar M. Furthermore, the mortar injection management system of the present invention also includes systems that perform only one of either the mortar injection pressure management process or the mortar injection volume management process.

[0067] Furthermore, in the mortar injection management system 1 of the above embodiment, the control unit 21 of the injection management device 2 may output information indicating that the standard has been met when it determines that the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure, or when it determines that the cumulative calculated discharge volume is equal to or greater than the set injection volume, or when it determines that the injection pressure measured by the pressure sensor 313 is equal to or greater than the set injection pressure and the cumulative calculated discharge volume is equal to or greater than the set injection volume. This information indicating that the standard has been met can be output by, for example, transmitting the information to the mobile terminal 4 so that the information indicating that the standard has been met is displayed on the mobile terminal 4, or transmitting the information indicating that the standard has been met is displayed on the recording management device 5 and the mobile terminal 4, or displaying it on the display unit 24 of the injection management device 2, or appropriately combining both of these transmission outputs and display outputs.

[0068] Furthermore, if the construction management condition is that the final injection pressure of the mortar injection is equal to or greater than the initial pressure plus a predetermined additional pressure, the control unit 21 of the injection management device 2 may determine whether the final injection pressure is equal to or greater than the initial pressure plus a predetermined additional pressure stored in the storage unit 22, and depending on the determination result, store in the storage unit 22 information indicating that the condition injection pressure has been met and information indicating that the condition injection pressure has not been met, or transmit output to the management recording device 5 for storage in the construction record storage unit 522.

[0069] Furthermore, while the mortar injection management system of the present invention is preferably used when injecting mortar M into injection holes in which rock bolts are installed, it may also be used when injecting mortar M into injection holes in which rock bolts are not installed.

[0070] Furthermore, in the mortar injection management system of the present invention, when management processing for the amount of mortar injected and management processing for the mortar injection pressure are performed in parallel, the management processing for the mortar injection pressure is appropriate as long as it can determine whether the injection pressure measured by the pressure sensor is equal to or greater than the set injection pressure that serves as the judgment criterion, and is not limited to the processing of the above embodiment. [Industrial applicability]

[0071] This invention can be used, for example, when injecting mortar into injection holes formed in the ground of a tunnel. [Explanation of symbols]

[0072] 1…Mortar Injection Management System 2…Injection Management Device 21…Control Unit 211…Cumulative Discharge Volume Calculation Unit 212…Injection Volume Management Unit 213…Correction Coefficient Calculation Unit 214…Injection Pressure Management Unit 22…Storage Unit 221…Control Program Storage Unit 222…Calculation Data Storage Unit 223…Set Injection Volume Storage Unit 224…Correction Coefficient Storage Unit 225…Set Injection Pressure Storage Unit 226…Maximum Injection Pressure Storage Unit 23…Input Unit 24…Display Unit 25…Timer 26…Communication Interface 3…Mixing and Pumping Pump 301…Hopper 302…Discharge Port 303…Water Inlet 304…Cylinder Section 305…Water Supply Pipe 306…Water Volume Meter 307…Agitator Blade 308…Agitator Rod 309…Motor 310…Mixing Section 311…Pumping Pump Section 312…Pumping Hose 313…Pressure sensor 314…Operation switching unit 315…Operation control unit 316…Communication interface 320…Notification unit 320p…Injection pressure notification unit 320q…Injection volume notification unit 320r…Operation notification unit 321…Container 322…Weighing scale 330…Measurement operation switching unit 330p…Mode switching switch 330q…Measurement start switch 330r…Measurement stop switch 4…Mobile terminal 41…Control unit 411…Operation switching unit 42…Storage unit 421…Control program storage unit 43…Input unit 44…Display unit 45…Communication interface 5…Management recording device 51…Control unit 52…Storage 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…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 pump is used to continuously supply dry mortar in a fixed quantity to a mixing section, to which water is supplied via a water supply pipe and adjusted to achieve the desired mortar properties, and to pump the mortar produced by mixing the dry mortar and water through a pressure pump section via a pressure hose. The aforementioned mixing and pumping pump includes an operation switching unit that switches between starting and stopping operation, A water meter installed in the aforementioned water supply pipe, A calculation data storage unit stores a calculation constant corresponding to the type of mortar, a discharge volume calculation formula in which the calculation constant, a correction coefficient, and the supply water volume are substituted to calculate the discharge volume, and an initial value of the correction coefficient. A correction coefficient calculation unit calculates the cumulative value of the calculated discharge volume by substituting the calculation constant corresponding to the mortar to be used, the initial value of the correction coefficient, and the amount of water supplied for a predetermined time into the discharge volume calculation formula, and compares the cumulative value of the calculated discharge volume with the actual discharge volume of the mortar to be used for a predetermined time obtained by pre-operating the mixing pump, A correction coefficient storage unit stores the correction coefficient calculated in accordance with the mortar to be used, A set injection amount storage unit stores the set amount of mortar to be injected into the injection hole, A cumulative discharge volume calculation unit extracts the calculation constant, the discharge volume calculation formula, and the correction coefficient corresponding to the mortar to be used, calculates the calculated discharge volume using the discharge volume calculation formula into which the supply water per unit time taken from the water meter during the operation of the mixing pump that pumps the mortar to be used, the calculation constant, and the correction coefficient have been substituted, and calculates the cumulative discharge volume by accumulating the calculated discharge volume, A mortar injection management system characterized by comprising an injection volume management unit that determines whether the cumulative calculated discharge volume is equal to or greater than the set injection volume.

2. The calculation data storage unit stores the specific gravity of the powdered dry mortar corresponding to the type of mortar, The mortar injection management system according to claim 1, characterized in that the correction coefficient calculation unit calculates the measured discharge volume of the mortar to be used for a predetermined time from the measured discharge weight of the mortar to be used for a predetermined time obtained by pre-operating the mixing and pumping pump, using the specific gravity of the dry mortar corresponding to the mortar to be used.

3. A pressure sensor installed in the aforementioned pumping hose measures the injection pressure of the mortar being pumped by the aforementioned mixing pumping pump, A setting injection pressure storage unit for storing the set injection pressure of mortar into the injection hole, The mortar injection management system according to claim 1, further comprising an injection pressure management unit that determines whether the injection pressure measured by the pressure sensor is equal to or greater than the set injection pressure.

4. A mortar injection management system according to any one of claims 1 to 3, characterized in that, when the cumulative calculated discharge amount of mortar to be used is equal to or greater than the set injection amount, information indicating that the standard amount has been cleared is output to the mobile terminal so that it can be displayed on the mobile terminal, and is also displayed on the display unit of the injection management device.

5. The aforementioned mortar type is entered from the mobile terminal, The mortar injection management system according to claim 4, characterized in that the operating operation switching unit for switching the start and stop operation of the mixing and pumping pump is provided in the portable terminal.

6. A mortar injection management system according to any one of claims 1 to 3, characterized by comprising a construction record storage unit that stores identification information of injection holes into which mortar is injected, and the cumulative calculated discharge volume amount for the injection holes corresponding to the identification information.

7. A calculation data storage unit stores a calculation constant corresponding to the type of mortar, a discharge volume calculation formula in which the calculation constant, a correction coefficient, and the supply water volume are substituted to calculate the discharge volume, and an initial value of the correction coefficient. A correction coefficient calculation unit calculates the cumulative value of the calculated discharge volume by substituting the calculation constant corresponding to the mortar to be used, the initial value of the correction coefficient, and the amount of water supplied for a predetermined time into the discharge volume calculation formula, and compares the cumulative value of the calculated discharge volume with the actual discharge volume of the mortar to be used for a predetermined time obtained by pre-operating the mixing pump, A correction coefficient storage unit stores the correction coefficient calculated in accordance with the mortar to be used, A mortar injection management system comprising: an integrated discharge volume calculation unit that extracts the calculation constant, the discharge volume calculation formula, and the correction coefficient corresponding to the mortar to be used; calculates the calculated discharge volume using the discharge volume calculation formula into which the supply water per unit time taken from the water meter, the calculation constant, and the correction coefficient are substituted during the operation of the mixing pump that pumps the mortar to be used; and calculates the integrated discharge volume by accumulating the calculated discharge volume.

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