KR20070020163A - Apparatus for using a fiber reinforcement ground system - Google Patents

Abstract

A device for fiber-reinforced earth construction method capable of securely and efficiently performing a construction by preventing fibers from being twined even if a distance between a fiber supply device and an injection nozzle is long to eliminate a trouble in the construction due to the effects of wind, supplying a proper amount of fibers to sandy soil by accurately performing the control of the supply of fibers, and securing the strength of prepared fiber-reinforced earth by sufficiently twining the fibers with the sandy soil, comprising a sandy soil supply device carrying the sandy soil to the reinforced earth preparing place and the fiber supply device for storing, therein, a reel for the fibers twined in the sandy soil. The device for fiber-reinforced earth construction method by continuous fibers also comprises the injection nozzle jetting the fibers continuously delivered from the fiber supply device by utilizing high- pressure water or compressed air and is characterized in that feed rollers having the fibers wound therearound or holding the fibers therebetween to forcibly feed out the fibers are installed between the fiber supply device and the injection nozzle and interlocked with the fiber supply device to control the rotation of the feed rollers. ® KIPO & WIPO 2007

Description

Apparatus for the fiber reinforced soil method {APPARATUS FOR USING A FIBER REINFORCEMENT GROUND SYSTEM}

The present invention relates to an apparatus for fiber reinforcement soil construction by continuous fibers sprayed onto a construction site where fibers and sand or sand (or sand sand) are to be reinforced.

Apparatus for use in the fiber reinforcement method for spraying to the construction site to reinforce the fiber and the sandy soil, in the case of the fiber continuous fibers, the fiber supply having a guidestay to contain the failure of the fiber and to release the fiber from this failure A belt conveyor and a material hose are attached to a fiber installation device comprising a device and an ejection from the spray nozzle using the high pressure water sent from the water tank to the supply pipe via a high pressure pump from the water tank. It is known to combine the sandy soil supply apparatus which consists of a branch injector.

18 shows an outline of the fiber reinforced soil construction method using this apparatus, which is constituted by means S100 for supplying sandy soil and means T100 for supplying continuous fibers. That is, the sandy soil S is metered by the meter S102 on one side, and is conveyed by the flexible conveying tube S108 from the sandy soil conveying apparatus S104 by air pressure, and the fiber from the fiber supply apparatus T102 on the other hand. Is supplied and jetted from the injection nozzle T106 by jet water from the eject WE at a constant weight ratio to the weight of sandy soil, and the fibers are entangled in the sandy soil to form reinforcement soil H.

In the eject, the fibers are inserted into the injection nozzle, and when the high pressure water is discharged from the injection nozzle, the fibers are also injected from the injection nozzle. On the other hand, the sandy soil, belt conveyor, and material hose are conveyed to the fiber distribution, and are directly sprayed and mixed with the fibers.

In this way, about 2.0 to 5.0kg of fiber (multi-filament lead-free fiber) is sprayed with jet water and mixed three-dimensionally with sandy soil for 1 m ³ of sandy soil, and the shear strength is increased, and the stable soil structure is more stable. Can be built.

In this case, the mixing of the fiber, the sandy soil and the jet water is performed directly on the ground such as a road or a normal surface, and one worker carries the sandy soil by hand with a material hose carrying the sandy soil. It discharges on the ground, and the other worker injects the jet water and a fiber from a spray nozzle, moving on the ground of the range from which sandy soil was discharged with the ejector by hand.

In addition to the retaining walls and fills of roads, this method can be widely applied to the protection of legal surfaces, to the foundation of soft ground, moreover to earthquake- and dust-proof foundations, to the protection of structures against impacts, and to filter layers of dams.

In addition, Japanese Patent Publication No. 2879477 also discloses a device in which a material hose for conveying sandy soil and an injection nozzle for injecting fibers are integrated.

In Japanese Patent Publication No. 2879477, the ground improvement material main body (sand sandy soil) is transported in one hollow conveying road and ejected from the discharging nozzle provided at the distal end or the distal end thereof, and the inside of the other hollow conveying road is formed therein. A continuous fiber yarn is mounted on the flow of air by compressed air blown into the air, and is discharged from the injection nozzle provided at the tip or the tip thereof, and the discharge direction is intersected with the flow of the improved material main body. It is characterized in that yarns are loaded on the flow of the improved material and sprayed on the surface to be improved as an integral material.

As shown in FIG. 19, the injection material main body is pumped in the hose 112 by a pressure feed pump, and is injected into the target surface, for example, a normal surface from the injection nozzle 111 of the front end.

On the other hand, a continuous fiber yarn 113 such as polypropylene is introduced into the fiber nozzle 114, and is blown out from its tip by compressed air by a compressor. The fiber nozzle 114 is integrated with the spray nozzle 111 by the fixing tool 115, and the ejection direction of the fiber nozzle 114 intersects with the ejection direction of the ejection material from the ejection nozzle 111 It is.

By the way, in the reinforced earth construction method by the fiber shown in FIG. 18, the fiber between the guide stay of the fiber supply apparatus T102 and the injection nozzle T106 is easy to be influenced by wind, and the fibers may become entangled. Therefore, mobility is impaired unless the fiber supply device T102 is always arranged near the injection nozzle T106.

In addition, in order to maintain the strength as reinforcement soils, it is necessary to mix a considerable amount of fibers intertwined with the spray material, but on the other hand, if the ratio of the continuous fibers is too large, a large amount of the continuous fibers required for the composition of the reinforcement soils is required. We lose and construction cost becomes high.

Furthermore, if the strength of the reinforcement soil is maintained by adding a large amount of bonding material such as cement to the spraying material, when the vegetation work is performed on the reinforcement soil, the growth of the roots of the plant may be hindered and the plant may grow healthy. none.

Therefore, it is necessary to manage the amount of fiber to be appropriate for the amount of sandy soil to maintain the strength as reinforcement soil while having a thickness that allows plants to grow healthy.

In the example shown in FIG. 18, as for the supply of sandy soil, the operator monitors the decrease in the sandy soil in the tank of the sandy soil conveying device S104 and replenish the sandy soil measured by batch measurement. Although supplied at a constant weight ratio with respect to, the management of the injection pressure and speed of jet water only did not manage high viscosity. As a result, a gap arises in the quantity of fiber with respect to the injected sandy soil, and there existed a problem that precision was low in order to obtain homogeneous mixing property.

The object of the present invention is to prevent entanglement of fibers even at a long distance between the fiber supply device and the spray nozzle, to prevent the construction of the fiber under the influence of wind, etc., and to ensure reliable and efficient construction. Providing a fiber reinforcement soil construction apparatus capable of securing the strength of the fiber reinforcement soil to be formed by supplying an appropriate amount of fibers to the sandy soil by more precisely managing the supply of fibers, and entangles the fibers with the sandy soil Is in.

In order to achieve the said object, this invention of Claim 1 is equipped with the sand-supply apparatus which conveys sandy soil to the composition part of reinforcement soil, and the fiber-supply apparatus which stores the failure of the fiber intertwined with sandy soil, This fiber supply apparatus is provided. A device for fiber reinforcement method using a continuous fiber having a spray nozzle using the high pressure water or compressed air to continuously release the fiber from the fiber, wherein the fiber is wound between the fiber feed device and the spray nozzle or by forcibly It is a main point to provide a feed roller which is sent out, and to control the rotation of a feed roller by interlocking with a fiber supply apparatus.

According to the present invention of claim 1, the fibers are drawn out by the feed rollers and are also conveyed, so that the fibers can be kept in a tension-free state, can be transported for a long distance, and the entanglement between the fibers can be prevented. In addition, the wind does not seem to interfere with construction. In addition, since the control of the supply amount of the fiber is performed by controlling the rotation of the feed roller without using water pressure or air, the supply amount of the fiber can be controlled more accurately, and the supply management of the fiber can be performed more accurately. Become.

According to the present invention described in claim 2, the fiber supply apparatus includes: a detector for detecting the input amount of the fiber from a failure or the remaining amount of the failed fiber; a fiber metering device for measuring the supply amount of the fiber by an input from the detector; A display unit for displaying the supply amount of one fiber in correspondence with the supply amount of sandy soil, and a fiber supply control device for controlling the supply amount of the fiber, and controlling the rotation of the feed roller according to the supply amount of the fiber to be weighed in the fiber metering device. The point is to do.

According to the present invention described in claim 2, the supply amount of the fiber is displayed in correspondence with the supply amount of the sandy soil, and the supply amount of the fiber to the sandy soil is controlled and controlled by controlling the supply amount of the fiber to be suitable for the sandy soil. Since it is possible to supply an appropriate amount of fibers to the sandy soil, the sandy soil and the fibers can be sufficiently entangled.

According to the present invention of claim 3, the detector is provided by attaching an encoder that detects the input amount of the fiber by rotation to a measuring wheel that rotates by the movement of the fiber, and outputs the output of the encoder to the fiber measuring device. The point is to introduce.

According to this invention of Claim 3, since the quantity of fiber input is measured by connecting the encoder attached to the roller to a fiber metering device, the amount of fiber supplied is measured as the amount of length, and each batch (200 kg of sandy soil) Can also be used to measure a relatively small amount of fiber, and to more accurately grasp and manage the fiber supply amount.

This invention of Claim 4 is a load cell provided in a detector and the fiber supply apparatus which stores a failure of a fiber, and makes it a summary to introduce the output of this load cell into a fiber metering apparatus.

According to this invention of Claim 4, a load cell detects the load of a fiber, and is introduce | transduced into a fiber metering apparatus. Here, since the load of failure decreases when the fiber is released from the fiber supply device, the change in the load value detected by the load cell is measured as the supply amount of the fiber and the amount is displayed. This display is displayed for each fiber (for each bobbin case) and as a total value, and the discharge amount of the sandy soil is displayed on the sandy soil batch counter as the number of batches.

This invention of Claim 5 makes it a summary for the fiber which comes out of a feed roller to detect the tension of a fiber, and to install the safety switch which stops operation when the tension of a fiber is lost.

According to this invention of Claim 5, when the fiber which comes out of a feed roller and reaches an ejection is cut | disconnected, a safety switch detects this, ie, operation | movement of a feed roller can be stopped. As a result, entanglement of a fiber etc. is prevented and the spraying operation of a fiber becomes smooth.

This invention of Claim 6 makes it easy for an eject to provide several injection nozzle.

According to the present invention described in claim 6, by spraying the fibers from the plurality of spray nozzles, the sandy soil and the fibers can be uniformly dispersed and mixed, whereby the sandy soil and the fibers can be entangled without staining.

This invention of Claim 7 makes it a summary that an eject is comprised by the combination of the header which provided the some injection nozzle, and the swinging means of this header.

According to the present invention described in claim 7, since the header of the ejector is rocked by the rocking means, it is possible to install the fiber in a uniformly tensioned state, to increase the tension of the fiber, and to increase the tension of the fiber in the reinforcement soil. ) Adhesion can be secured without missing.

In addition, the header of the ejection automatically swings by the rocking means, and the tip of the spray nozzle automatically moves within the range in which the sandy soil is discharged. As a result, the operator only needs to have an eject, and since it is not necessary to use it frequently, workability is good, and if the ejection is caused to be manually shaken, it is difficult to install the unit uniformly. Replenish, workability is good.

This invention of Claim 8 is a capstan which winds up a some fiber, and makes the summary that the non-torque roller which a plurality joins is connected in the periphery.

According to this invention of Claim 8, a plurality of fibers can be bundled and exported to a capstan as one feed roller, and as a device becomes compact, the fibers are smoothly discharged even for an ejection provided with a plurality of injection nozzles in one header. Lose. The non-torque roller can smoothly guide the feed roller to or from the feed roller without tensioning the fibers. As a result, the spraying operation of the fibers can be performed smoothly, and the fibers can be entangled in the sandy soil efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the outline | summary of the fiber reinforced soil construction method using the apparatus for fiber reinforced soil construction methods of this invention.

2 is a front view of the fiber supply device.

3 is a side view of the fiber supply device.

4 is a plan view of the fiber supply apparatus.

5 is a front view of a rotary encoder part.

Fig. 6 is a control block diagram showing one embodiment of the apparatus for fiber reinforced soil method of the present invention.

7 is a front view of the feed roller.

8 is a rear view of the feed roller.

9 is a plan view of the feed roller mounting table.

10 is a side view of the feed roller mounting table.

11 is a plan view of the eject.

12 is a front view of the timing display panel.

13 is a side view of the timing display panel.

14 is a front view illustrating one screen on the display.

It is explanatory drawing which shows the whole of 2nd Embodiment of the apparatus for fiber reinforced soil method of this invention.

16 is an explanatory diagram of a load cell part.

It is a control block diagram which shows 2nd Embodiment of the apparatus for fiber reinforced soil method of this invention.

It is explanatory drawing which shows the outline | summary of the fiber reinforced soil method.

19 is an explanatory diagram showing a conventional example.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail according to drawing. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view showing an outline of a fiber reinforced earth process using the apparatus for fiber reinforced earth process of the present invention. The apparatus as a whole is as described in FIG. 18, and the fiber is distributed by a belt conveyor and a material hose. Naturally, the supply apparatus of sandy soil which conveys sandy soil until is used together naturally. Sandy soil here, sand or something similar to sand, for example mountain sand, river sand, sea sand, masato, shiras, sedimentary layers of volcanic ash or sand, etc. It refers to soil, crosslinking, etc.

The fiber placement device includes a fiber supply device 1 that stores a failure 19 (shown in FIGS. 2 to 4) of a continuous fiber 2 and a fiber 2 released from the fiber supply device 1. ) Is the same as that of the conventional example, and the fiber 2 released from the fiber supply device 1 is discharged from the water tank 3. The high pressure water sent to the supply pipe 5 via the high pressure pump 4 is used to inject from the injection nozzle 6.

As is well known in the art, the feed device 8 for sandy soil is a meter 11 connected to the hopper 10 by a belt conveyor 9a, and an injector for connecting the meter 11 to the meter 11 via a belt conveyor 9a. It consists of 12 pieces. In the figure, reference numeral 13 denotes a tractor shovel for conveying sandy soil from sand, and 15 denotes a compressor for supplying compressed air to the injector 12. Moreover, 16 shows the generator used as a power supply of the meter 11, etc. In FIG.

As shown in FIGS. 2-4, the said fiber supply apparatus 1 set 28 fibers 2 as a fiber management room, and wound the fiber by the side of the management room, and transversed the failure 19. Four rows and seven rows are arranged, and the fibers 2 from the four rows of four rows 19 are wound around the rollers 40, respectively, and then the direction is changed by the dock tail guides 41 to form a spiral tube 42. Leads out. Reference numeral 54 is a non-torque roller, 55 is a balloon guide, and 56 is a tensor.

In addition, as shown in FIG. 5, between the said failure 19 and the roller 40, the safety switch 43 by a limit switch can be installed in the fiber 2, and fiber cutting etc. can be detected. It was made.

The safety switch 43 detects the tension of the fiber and stops the operation of the feed roller, which will be described later when the tension of the fiber is lost, by using a limit switch in combination with a relay, Not shown).

A rotary encoder 44 is connected to the roller 40. As shown in FIG. 6, the output of the rotary encoder 44 is introduced into the PLC 45 as a control device, and the PLC 45 has an indicator ( 46) was connected. In addition, the metering output of the sandy soil 11 from the meter 11 and the output from the safety switch 43 are also introduced into the PLC 45.

The output of the PLC 45 is introduced into a drive motor 48 (AC servo motor) of the feed roller 47 described later.

The PLC 45 is logically programmed as a computer as follows.

 (1) Measurement of sandy soil

Sandy soil supply = pulse × m ³ / BH

 (2) measurement of fiber

Fiber supply = pulse X m / pulse X failure number X weight / m (den)

 (3) mixing amount of fiber

Fiber supply amount (2) ÷ sandy soil supply amount (1) = fiber mixing amount

 (4) Feed Roller Control

Mixing quantity (3) (→ fast) <mixing quantity set point <mixing quantity (3) (→ late)

As shown in FIG. 1, the ejection which injects the fiber supply apparatus 1 and the fiber 2 which contain the failure 19 of the said continuous fiber 2 from the injection nozzle 6 using high pressure water ( Between 7), the feed roller 47 which forcibly pulled out by winding the fiber 2 was provided.

Moreover, in addition to using such a feed roller 47, between the fiber supply apparatus 1 and the said ejection 7, the support | pillar 58 provided in parallel with the guide ring in which the fiber 2 is inserted is provided in multiple numbers. You may also do it.

Although an example of this feed roller 47 is shown in FIG. 7, FIG. 8, the feed roller 47 is provided in the outer side of the box 49 in which the drive motor 48 (AC servo motor) was built, and the rice paddles are arrange | positioned around it. The torque rollers 50 were disposed in an appropriate number, and the fibers 2 were wound around the feed rollers 47. In the example shown in figure, the non-torque roller 50 is four times according to the number of fibers 2, and the three non-torque rollers 50 are inserted into the feed roller 47 of the fiber 2, and the feed roller ( 47) is provided on the input side and further on the extension side. In the figure, reference numeral 51 denotes a stopper detection plate by a limit switch, so that the fiber can be detected immediately when fibers are entangled in the feed roller 47.

The box 49 provided with the feed roller 47 is provided with a timer 59, an earth leakage breaker 60, a variable resistor 61, and a toggle switch 62 which is an operation switch. As described later, the variable resistor 61 is an adjustment switch capable of changing the discharge amount of the fiber when the discharge amount of the sandy soil does not match the discharge amount.

In addition, reference numeral 52 denotes a divisor attached to the upper surface of the box 49, and 53 denotes a cube by an enpra leveling pad provided on the lower surface.

In addition, as shown in Figs. 9 and 10, the feed roller 47 is provided on the pedestal 57, and the safety switch which detects the tension of the fiber and stops operation when the tension of the fiber is lost ( 43 may be provided on the same pedestal 57. In the figure, reference numeral 59 denotes a push switch for operation using a limit switch combined with a relay.

As shown in Fig. 11, the eject 7 is constituted by a combination of the header 22 and the swinging means 23, and the header 22 attracts the fibers 2 from the fiber supply device 1. It has four fiber guides 24 and four injection nozzles 6 for injecting the fibers 2 together with high pressure water or compressed air.

The swinging means 23 extracts the cylinder 27 to the other end of the arm 29 having one end attached to the base 30 toward the inclined upper side, and the tip of the piston 28 of the cylinder 27. The upper end of the swinging arm 26 is rotatably rotatably fixed, the lower end of the swinging arm 26 is fixed to the rotary moving tube 25, and the rotary moving tube 25 is attached to the header 22. It was connected coaxially. And this rotational movement pipe | tube 25 is connected to supply pipes 5, such as high pressure water, via rotational movement joint. In the figure, reference numeral 32 denotes an operation unit.

Next, the operation will be mainly described with reference to FIG. 1. The fiber 2 as a continuous fiber is provided in the vicinity of a construction site such as a facade and the fiber 2 is released from the failure 19 (FIGS. 2 to 4) in the fiber supply 1. The four fibers 2 as continuous fibers (lead-free fibers) guided outside to 42 and released are sent by the feed rollers 47 and via the fiber guides 24 (FIG. 11) of the eject 7. It is inserted into the injection nozzle 6. The fiber 2 is drawn by the eject 7 and sequentially released from the fiber supply device 1, but the feed of the feed roller 47 is added to this.

In the eject 7, when the high pressure water sent from the water tank 3 to the supply hose 5 via the high pressure pump 4 is injected from the injection nozzle 6, the fiber 2 is also discharged, and the injector ( It is directly sprayed and mixed on the sandy soil and the ground which are ejected from the tip of the material hose 33 of 12) onto the ground of the normal surface.

At this time, by operating the operation part 32 (FIG. 11) of the eject 7, the piston 28 of the cylinder 27 reciprocates, and accompanying this, the rocking arm attached to the front-end | tip of the piston 28 The upper end of 26) moves while drawing an arc-shaped trajectory, and the lower end rotates at a fixed part of the rotary moving tube 25. As a result, the rotary motion tube 25 is integrated with the lower end of the swinging arm 26 and rotates. This rotational motion is transmitted to the coaxial header 22, and the header 22 also rotates. Thereby, the injection nozzle 6 provided in the header 22 moves, drawing the arc-shaped trace.

Therefore, when the operator holds the ejector 7 by hand, the spray nozzle 6 automatically swings without moving the hand, the injection destination of the fiber 2 and the jet water automatically reciprocates, and the sand is uniformly sanded. Mix with In addition, the eject 7 may be injected from the injection nozzle using compressed air, not high pressure water.

The supply amount of the fiber 2 from the fiber supply device 1 is detected by the rotary encoder 44 (FIG. 5), the output of which is introduced into the PLC 45 (FIG. 6), measured here, and the indicator 46 6, the amount is indicated. The display is displayed for each fiber (for each bobbin case) and as a total value, and the discharge amount of sandy soil is displayed on the sandy soil batch counter as the number of batches.

In addition, a timing display panel 63 as shown in FIG. 12 is used for stable supply of sandy soil and continuous fibers. This obtains a signal from the meter 11 connected to the hopper 10 of the sandy soil supply device 8 and informs the operator of the timing to be metered by the buzzer 64 and the indicator 65 per batch. In the human sense, the cycle time is determined by the timer 66, and the interval is determined by the timer 66, and the interval is measured.

As shown in FIG. 13, start (upward) stop reset (downward) operation is performed by the toggle switch 67 of the timing display panel 63, and the timer 66 is simultaneously operated at the start of weighing. As a result, the buzzer 64 and the indicator 65 are repeatedly displayed for one second every cycle. Stable supply can be performed simultaneously with the display. In the figure, reference numeral 68 is a power indicator, 69 is a push button switch.

In this way, in order to ensure the design mixing amount of 3.3 kg / m ³ of continuous fibers, the amount of injection from the fiber supply device 1 (thread feeder) is estimated to be 5.0% in a loss ratio (amount of fibers covering the surface of the reinforced soil), which is 3.3 kg. / m ³ x 1.05 = 3.465 kg / m ³ as a management target value, and the fiber injection amount is measured by the measuring apparatus of the fiber supply apparatus 1 every time one batch of sandy soil is discharged.

In addition, as shown in FIG. 14, the management of the fibers can also set the upper limit value, the management target value, and the lower limit value, and display the graph screen on the display unit 46.

When the amount of fiber supplied does not match the discharge amount of sandy soil, the rotation speed of the feed roller 47 is changed by adjusting the drive motor 48 (AC servo motor) by the command of the PLC 45. do. In addition to or instead of this, it is also possible to adjust the discharge amount of the fiber in the part of the eject 7 through the high pressure pump 4 by the amount of water.

In that case, the measurement by the rotary encoder 44 is displayed on the display 46 as a fiber speed, and the rotation speed of the feed roller 47 can be controlled based on this value.

Moreover, the fiber 2 is unwound from the feed roller 47, it unfolds in the direction of the eject 7, and the safety switch 43 contacts the fiber 2 and detects tension in the state. In addition, when the feeding state is bad and the fiber 2 is loosened or the fiber 2 is cut, the tension is lost. Therefore, the safety switch 43 detects this and feeds the feed roller 47 through the relay. ) Stop the rotation.

In addition to the manual construction by a small machine as described above, when a large machine can be introduced into a construction site, and when the construction range is extensive, the construction by a large machine can be performed. In addition, instead of operating the injection nozzle of sandy soil and the injection nozzle of fiber independently from each other, the fiber supplied may be joined with the injection nozzle of sandy soil, and the jet nozzle of fiber may be fixed with respect to the injection nozzle of sandy soil.

15 and 16 show another embodiment of the present invention, in place of the rotary encoder 44 which measures the input amount of the fiber from the failure 19, or the input amount or the failure of the fiber from the failure 19 ( The load cell 34 is used as a detector for detecting the remaining amount of the fibers of 19).

As shown in Fig. 15, the present embodiment is constituted by the fiber supply device 1 as a means for supplying fibers and the supply device 8 of sandy soil as means for supplying sandy soil, as in the first embodiment. In addition, the same code | symbol is attached | subjected about the component same as the said 1st Example. In Fig. 15, reference numeral 14 denotes a sand mountain, 31 denotes a method of forming reinforcement soil, 17 denotes a distribution panel of the generator 16, and 18 denotes an amount of the yarn released from the supply device 1 of the yarn. The fiber management apparatus which is a metering apparatus is shown.

The fiber supply apparatus 1 is a portable bobbin case having one guide stay 20 which entangles and feeds the fibers 2 from a plurality of (four in the illustrated example) failures 19. (21) was made into one unit, and these were installed individually in plurality (four in the example shown).

In addition, as shown in the first embodiment, as shown in Figs. 2 to 4, the fiber supply device 1 and the fiber 2 which store the failure 19 of the continuous fiber 2 are subjected to high pressure water. The feed roller 47 which forcibly sent out the fiber 2 was mutually interposed between the ejector 7 which injects from the injection nozzle 6, and is used. In addition, this feed roller 47 may wind and return the fiber 2 like the said 1st Embodiment, and like the said 1st Embodiment, the safety switch which stops operation when the tension | tensile_strength of a fiber disappears. 43 is provided.

As shown in FIG. 15 again, the bobbin case 21 combines the support frame 21b with the base 21a, and the support frame has a lower portion of the four frame bodies whose upper portions are curved in an arc shape. Raise from four corners of base to form the whole case into cage shape and cover with cover.

A load cell (shown in Fig. 16) is fixed to the bottom of the case in the lower pin, and a weighing stand made up of a cross-shaped bar is attached to the upper part through the upper pin. The lower bobbin pedestal and the upper bobbin pedestal are arranged in a total of four squares on the rod of.

The load cell 34 provided in each bobbin case 21 of the fiber supply apparatus 1 comprised as mentioned above is connected to the fiber meter 18. As shown in FIG.

As shown in FIG. 16, the fiber measurement apparatus 18 provided with the PLC 45 mentioned later has the fiber weight indicator 36, the fiber weight total indicator 37, and the sandy soil arrangement for each fiber supply apparatus 1, respectively. The counter 38 is provided. In addition, as shown in FIG. 17, the output of the load cell 34 is introduced into the PLC 45 as a control device of the fiber weighing device 18, and the weighing output from the weighing soil 11 of sandy soil is measured. The output from the switch 43 is also introduced into the PLC 45.

The output of the PLC 45 is introduced into the drive motor 48 (AC servo motor) of the feed roller 47 as in the first embodiment.

Next, the operation will be mainly described with reference to FIG. 15. Four bobbin cases 21 are brought into the construction site such as the surface 31 and transferred to an appropriate place. In each bobbin case 21 of the fiber supply device 1, the fibers 2 as continuous fibers released from the four failures 19 are twisted and twisted into one, and the inlet 35 and the guide stay 20 ) Is inserted into the spray nozzle 6 via the fiber guide 24 of the eject 7.

The load cells 34, 16 and 17 detect the load of the bobbin case 21 and the output thereof is introduced into the PLC 45. Here, since the load of failure decreases when the fiber 2 is released from the fiber supply device 1, the change in the value of the load detected by the load cell 34 causes the PLC 45 to supply the fiber 2 as the supply amount. It is measured and the quantity is displayed on the display 46. This display is displayed for each fiber (for each bobbin case) and as a total value, and the discharge amount of the sandy soil is displayed on the sandy soil batch counter as the number of batches.

In this way, in order to secure the design mixing amount of the fiber 3.3 kg / m ³ , the injection amount from the fiber supply device 1 (thread feeder) is expected to be 5.0% of the loss rate (fiber amount covering the surface of the reinforced soil) at 3.3 kg / m. ^{With 3} x 1.05 = 3.465 kg / m ³ as the management target value, the fiber injection amount is measured by the measuring device of the fiber supply device 1 each time the one batch of sandy soil is discharged.

When the amount of fiber supplied does not match the discharge amount of sandy soil, the rotation speed of the feed roller 47 is changed by controlling the drive motor 48 (AC servo motor) by the output command of the PLC 45, and this is adjusted. do. In addition to or instead of this, the discharge amount of the fibers in the part of the eject 7 can be adjusted by the amount of water (water pressure) through the high pressure pump 4 (FIG. 15).

In that case, the measurement by the rotary encoder 44 is displayed on the display 46 as a fiber speed, and the rotation speed of the feed roller 47 can be controlled based on this value.

When the input state is bad and the fiber 2 is loosened or the fiber 2 is cut off, the safety switch 43 (FIGS. 2 and 5) detects this similarly to the first embodiment, and the relay The rotation of the feed roller 47 is stopped via.

As described above, the apparatus for fiber reinforcement method of the present invention prevents entanglement of fibers even at a long distance between the fiber supply device and the spray nozzle, and ensures no disturbance in construction due to the influence of wind. The construction can be efficiently carried out, and by supplying fibers, the appropriate amount of fibers can be supplied to the sandy soil, and the fiber reinforced soil to be formed can be secured by sufficiently intertwining the sandy soil with the fibers.

Claims (8)

Equipped with a sandy soil supply device for conveying sandy soil to the composition of the reinforcement soil, and a fiber feeding apparatus for storing the failure of the fibers intertwined with sandy soil, the fibers continuously released from the fiber supply apparatus are sprayed using high pressure water or compressed air. In the apparatus for reinforcing fiber construction method using a continuous fiber having a nozzle, a feed roller is wound between a fiber supply device and a spray nozzle, and a fiber is forcibly fed between the fiber supply device and the spray nozzle, and interlocked with the fiber supply device to provide a feed roller. Apparatus for reinforcing fiber method, characterized in that for controlling the rotation. The method of claim 1, The fiber supply apparatus includes a detector that detects the amount of fibers that have failed or the amount of fibers that have failed, a fiber meter that measures the amount of fiber supplied by the detector, and a value of the quantity of fibers measured. An apparatus for fiber reinforcement method, comprising: a display unit for displaying a value corresponding to a supply amount value, and a fiber supply control device for controlling the supply amount of the fiber, and controlling rotation of the feed roller according to the supply amount value of the fiber to be weighed in the fiber metering device. The method of claim 2, The detector is formed by attaching an encoder that detects the input amount of the fiber by rotation to a roller that rotates as the fiber moves, and introduces the output of the encoder into the fiber metering device. The method of claim 2, A detector is a load cell provided in the fiber supply apparatus which stores a failure of a fiber, and the apparatus for fiber reinforced soil construction methods which introduces the output of this load cell into a fiber metering apparatus. The method of claim 1, An apparatus for fiber reinforced soil method, wherein the fiber coming from the feed roller is provided with a safety switch that detects the tension of the fiber and stops the operation when the tension of the fiber is lost. The method of claim 1, The ejector is an apparatus for fiber reinforced soil method in which a plurality of spray nozzles are provided. The method of claim 6, The ejector is an apparatus for fiber reinforcement soil construction comprising a combination of a header provided with a plurality of spray nozzles and a swinging means of the header. The method of claim 1, A feed roller is a capstan for winding a plurality of fibers, and a device for fiber reinforcement soil method in which a plurality of non-torque rollers are connected to the periphery thereof.

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