JPH08146195A - Cement filler injecting device - Google Patents

Abstract

PURPOSE: To continuously inject a filler while automatically measuring the liquid level of the filler. CONSTITUTION: A cement filler is force-fed by a flexible hose 15 wound round a reel 13 and discharged from the tip discharge opening 15b in a buried space. A signal of a liquid level of the filler measured by a laser beam liquid level detector 10 controls the drive of a rotary motor 14 for rotating the reel 13 normally and in the reverse direction through a control means 41. The tip discharge opening 15b of the flexible hose 15 is connected to the tips of guide pipes 20, 20 inserted through a pair of vertically fixed bushes 22, 22 by a fixing band 24, and the tip discharge opening 15b of the hose 15 is moved up and down by the rotation of the reel 13 to integrally elevate the guide pipes 20. The hose 15 is elevated according to the rising of the liquid level of the filler.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device for injecting a cement-based filler such as mortar into a gap in a buried space containing various kinds of waste such as radioactive waste. .

[0002]

2. Description of the Related Art At a nuclear power plant or the like, waste liquid or fine sludge contaminated with low-level radioactive substances is mixed and solidified with a solidified material such as cement or asphalt in a drum can (referred to as a homogeneous solidified body) and buried. It is possible. These drums are completely sealed, and are stored in a rectangular parallelepiped hole made of concrete dug in the ground, for example, stacked in 8 × 5 rows × 8 stages and stored in the ground. In the near future, resin products and metal pieces that are contaminated with low-level radioactive substances will be crushed, and mixed with mortar, etc. under a well-controlled condition, and then packed in a drum can and solidified. It is also considered to be buried (called miscellaneous solid).

Drums of this type of low-level radioactive waste and the like are generally buried in a buried facility as shown in FIG. That is, a structure 1 of reinforced concrete is constructed in the ground, and a plurality of columns of waste-filled spaces (hereinafter referred to as partitions) 2 are formed in the interior thereof. In this compartment 2, drum cans 3 filled with the low-level radioactive waste as described above are stacked in a bale stack. And, in each gap of many drums stacked,
The cement-based filler 4 such as mortar is tightly packed to prevent the movement of the drum 3 and the contact with external water or the like. Furthermore, at least four circumferences of the reinforced concrete structure 1 and the upper lid are covered with the mixed soil 5 having a high property of blocking water. In this way, groundwater such as rainwater is prevented from coming into contact with the drum 3 in the ground and the low-level radioactive material is prevented from leaking into and out of the facility.

In the burying facility having such a structure, in the burying step, after the drums 3 are stacked in the compartment 2, the lid 2a covering the upper surface of the compartment 2 is passed through the opening 2b of the lid 2a. , A cement-based filler such as mortar is injected into the space between the drums 3 in the compartment 2
Need to be filled inside. When injecting this filler, it is necessary to fill without leaving any voids, with no difference in the composition of the filler, and with a certain quality, without filling a seam. Therefore, instead of arranging the discharge port at the tip of the injection pipe near the opening 2b of the lid and dropping the filler from above, the filler is inserted from the bottom while the injection pipe is inserted to the bottom of the compartment 2. There is a demand for a work of gradually injecting and gradually pulling up the injection pipe according to the height of the filling material while keeping the discharge port below the liquid surface. Moreover, the injection of the cement-based filler used for this purpose requires a large pumping pressure, and therefore the pulsation of the injection pipe is large. Therefore, the injection pipe has high strength and the injection pipe is firmly fixed. Is required.

It should be noted that due to the nature of the facility for burying radioactive waste, it is not allowed to leave foreign matter other than the drum 3 and the filler 4 in the compartment 2, and from the economical point of view, the size of the compartment 2 should be such that The space into which the injection pipe can be inserted is extremely small, because there is a demand for making the extra space that can be divided into parts other than the drum can 3 as small as possible.
Moreover, in the space, the stacked tops and bottoms of the drums are stacked in an uneven shape. A filling device capable of automatically filling a cement-based filler in such a difficult working environment has not been known so far.

By the way, as a technique for continuously injecting a cement-based filler such as mortar, which has been conventionally used at a construction site or the like, a construction method used for so-called pre-packed concrete is known. This method is a method in which the injection pipe is buried below the liquid surface of the mortar to be injected, and as the liquid level rises with the progress of the injection, the injection pipe is raised and continuously injected without interruption. Yes, the following construction methods are adopted according to the construction requirements. That is, a pod is installed in the mortar injection area, and a double tube system in which the tub is inserted into the pod is used. A method of switching the injection pipes to be used sequentially according to the length, forming an injection pipe by adding pipes divided into appropriate lengths (generally about 3 m), and temporarily interrupting the injection depending on the progress of injection, and unnecessary There is a method in which a simple tube is separated, the tube is pulled up, and then injection is restarted.

[0007]

However, when these conventional known construction methods are to be used for the construction method for burying the waste drum 3 in the facility for burying low-level radioactive waste as described above, the following method is used. It was difficult to hire for the following reasons. That is, regarding the construction method of (2), it is not allowed to leave foreign matter other than the drum 3 and the filling 4 in the compartment 2,
Therefore, the pods cannot be built. Regarding the construction method of (1), a large number of injection pipes cannot be used because the construction space is extremely narrow and limited. Regarding the other construction methods, since the injection part is dark and located in a narrow gap, it is not possible to visually observe the height of the liquid surface of the filling material.Therefore, the injection pipe should be replaced with one with a shallow injection depth or connected. The work efficiency and efficiency are poor, such as the unnecessary disconnection and pulling up of the injection pipe configured in 1. cannot be performed in a timely manner.

[0008] In view of such circumstances, an object of the present invention is to provide a cement-based filler filling device capable of automatically and safely filling the cement-based filler in the burial facility. .

[0009]

A cement-based filler filling device according to the present invention injects a cement-based filler into an embedding space by means of an injection pipe, and raises the injection pipe as the liquid level of the filler rises. Cement-based filler filling device that injects the filling material while allowing the filling pipe to include a flexible hose, and the hose operation that holds the end outlet of this flexible hose so that it can move up and down in the buried space. A mechanism, a guide member for guiding the vertical movement of the tip end discharge port of the flexible hose in the burying space, a filling height detecting means for measuring the liquid level of the filling material in the burying space, and the filling height detecting means. And a control means for controlling the operation of the hose actuation mechanism based on the detection signal output by the device, and at least the flexible hose is raised in accordance with the liquid level of the filling material while the filling material is emptied. It is characterized in that it has to be injected continuously within.

Further, the hose operating mechanism is provided with a reel for winding the flexible hose, and the flexible hose is wound and unwound by the rotation of the reel. is there. A guide roller for guiding the movement of the flexible hose may be provided between the reel and the guide member. The flexible hose is characterized by containing reinforcing fibers. Further, the flexible hose may be composed of a wear-resistant rubber hose, the winding portion of the hose actuating mechanism may include reinforcing fibers, and the tip discharge port area thereof may include a reinforcing metal wire. . The filling height detecting means is a laser light liquid level detector for irradiating the liquid surface with a laser beam and receiving the reflected light to measure the liquid surface height. The flexible hose and the tip of the guide member are fixed to each other by a fastening member. The guide member may include a plurality of guide pipes, and each guide pipe may be replenishable and removable.

[0011]

[Function] While the flexible hose is guided to the guide member and lowered to the bottom surface of the embedding space, the cement-based filler is discharged into the embedding space through the flexible hose by, for example, a pressure pump, and the liquid level of the embedding material is increased. The height is measured by the filling height detecting means at any time, and the hose operating mechanism is operated based on the detection signal,
The tip discharge port of the flexible hose is moved upward according to the rise of the liquid level, and the movement is guided by the guide member, and thus the filler is continuously injected into the burying space.

By rotating the reel on the basis of the detection signal, the flexible hose is wound on the reel, and its tip discharge port is raised according to the liquid level of the filling material while being guided by the guide member. When the flexible hose is wound and unwound by the reel, the flexible hose smoothly moves between the reel and the guide member via the guide roller. Since the flexible hose contains reinforcing fibers, it has flexibility and high rigidity and wear resistance,
The hose is repeatedly advanced and retracted during filling, and even if it pulsates during the pumping of the filling material, it is highly durable.
In addition, the flexible hose has both flexibility and durability because the wound portion contains the reinforcing fiber, and further, since the reinforcing metal wire is included in the tip discharge port area, it sways due to pulsation or the like. Even if it moves, its strength and rigidity are high. With the laser light liquid level detector, even if the buried space is a dark and narrow space, the laser light can surely reach the liquid surface of the filling material and its height can be automatically measured. Since the distal end portions of the flexible hose and the guide member are fixed to each other by the fastening member, even if the guide member is not provided with a moving mechanism, the flexible hose and the guide member move up and down together with the hose to control the operation.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view and a side view of the cement-based filler filling device according to the present embodiment provided in one of a plurality of arranged sections, and FIG. 2 is a perspective view of a main part of the filling device and the laser light level detector. Fig. 3, Fig. 3 is a front view of the vicinity of the reel of the filling device, Fig. 4 is a plan view of Fig. 3, Fig. 5 is a side view of Fig. 3, Fig. 6 is a front view of a main portion of the guide pipe, and Fig. 7 is a side view of Fig. 6. Figure, Figure 8
Is a horizontal sectional view showing a connecting structure between a flexible hose distal end portion and a guide pipe distal end portion, and FIG. 9 is a partial sectional view of the flexible hose. In FIG. 1, this embodiment is provided on each lid 2a of a plurality of compartments 2 (four compartments in the vertical direction and four compartments in the horizontal direction in FIG. 1) arranged in the central recess of the reinforced concrete structure 1. The cement-based filling material filling device 8 in step 1 is sequentially moved to fill the filling material. The cement-based filling material filling device 8 includes a pair of filling devices 9 and 9 arranged to be rotated, and a liquid level height of the cement-based filling material arranged near the center of rotation and supplied into the compartment 2. Laser light level detector 10 for measuring
And is constituted by.

In the filling device 9 shown in FIG. 2, for example, a rectangular frame 12 is formed in the horizontal direction, and a cylindrical reel 13 is rotatably supported on the frame 12 with its axis oriented horizontally. . The reel 13 can be rotated normally and reversely by a rotation motor 14 mounted on the frame 12. As shown in FIGS. 2 to 5, a flexible hose 15 made of, for example, a wear-resistant rubber hose is wound around the reel 13, and the hose 15 can be freely wound and unwound by a rotary motor 14. It is supposed to be. The reel 13 and the rotation motor 14 form a hose winding mechanism (hose operating mechanism). The rear end (filler supply port side) 15a of the flexible hose 15 is curved from the outer peripheral surface of the reel 13 in the direction of the internal rotation axis and extends radially inward. And
The pipe 16 in which the cement-based filler sent under pressure from a pressure-feed pump (not shown) is transferred is arranged so as to extend in the direction of the rotation axis of the reel 13, and the tip end thereof is bent at a substantially right angle in the reel 13. And extends radially outward and is connected to the rear end 15a of the flexible hose 15 (see FIG. 5).
reference). Further, a valve for opening a pipe line in the pipe 16 so as not to dissipate the filler remaining in the pipe such as the flexible hose 15 wound around the reel 13 when the device is cleaned after the filling is completed. 17 is attached. Incidentally, for example, a rotary joint (not shown) is arranged in the pipe 16, and a portion of the flexible hose 15 side from the rotary joint is adapted to rotate integrally with the reel 13 in a liquid-tight manner when the reel 13 rotates.

Next, on the frame 12 shown in FIG. 2, a support frame 21 that supports a pair of guide pipes 20 is provided adjacent to the reel 13. Each guide pipe 20 is configured by, for example, three pipes having an appropriate length (about 3 m) connected linearly. As shown in FIGS. 6 and 7, the guide pipes 20, 2 are provided on the support frame 21.
A pair of bushes 22, 2 for slidably inserting 0
2 are fixed vertically. The plate 23 mounted on the frame 12 immediately below the bushes 22, 22 has a long hole 23a through which the guide pipes 20, 20 and the flexible hose 15 are inserted. Therefore, the distance between the pair of guide pipes 20, 20 is set to be slightly larger than the outer diameter of the flexible hose 15. In the normal state, each guide pipe 2
0, 20 is designed to descend due to its own weight.

The pair of guide pipes 20, 20 have a pair of fixing bands 24, 24 at their tips (lower ends).
The flexible hose 15 is configured to be clamped and fixed by the. That is, each fixed band 24
As shown in FIG. 8, is composed of a substantially semi-arcuate portion 24a and planar ears 24b connected to both ends thereof, and is inserted into a pair of insert holes or hooks (not shown) provided at the distal end portion of the flexible hose 15 in a pair. The semi-arcuate portions 24a of the fixing band 24 of FIG.
The tip end of the flexible hose 15 can be firmly fixed to the tip of the guide pipe 20, 20 by sandwiching the locking piece 20a of each guide pipe 20 with 4b and screwing. Flexible hose 15 and guide pipes 20, 2
A plurality of pairs (6 pairs in FIG. 2) of such fixing bands 24 are provided at the front end portion of 0. In this state, the guide pipes 20, 20 are locked by the flexible hose 15 wound around the reel 13, and the lowering thereof is suppressed. In FIG. 6, the guide pipe 20
The hydraulic cylinder 26 is provided in the frame 12 adjacent to the hydraulic cylinder 26, and the hydraulic cylinder 26 is driven to assemble the bush 22 before the guide pipe 20 is inserted through the swing arm 27 when the filling device 9 is assembled. It is possible to control the guide pipe 20 to be easily assembled by connecting the above-mentioned three pipes easily by rotating and holding the guide pipe 20 in the horizontal direction. These pipes can be replenished and removed according to needs such as the depth of the burying space, so that the total length of the guide pipe 20 can be adjusted.

Further, in FIGS. 3 and 7, between the reel 13 and the pair of guide pipes 20, 20, there is a fan-shaped side view for guiding the winding and unwinding of the flexible hose 15 with respect to the reel 13. Guide rollers 29 are provided. A fulcrum 29a of the guide roller 29 is rotatably supported by a support arm 30 so as to be rotatable over a predetermined angle range, and may be urged in one direction by an elastic member (not shown). . The support arm 30 is held by two arms 31 and 32 extending downward from the support frame 21.

Further, as shown in FIG. 9, inside the flexible hose 15 made of a wear resistant rubber hose, a tip region 15c near the discharge hole 15b for discharging the filler (approximately 1 m from the discharge hole 15b) is provided. Includes a reinforcing steel wire 34 wound in a spiral shape (may be a ring shape), and a plurality of layers (8 layers in the figure) of reinforcing fibers (for example, carcass) 35 having a predetermined width in the other region 15d. It is included in a spirally wound configuration. In this case, the flexible hose 15
Since the flexible hose 15 easily moves with respect to the fixed band 24 due to pulsation or the like, the region 15c at the tip of the region 15c containing the reinforcing steel wire 34 is easily detached, so that its strength and rigidity are increased. On the other hand, the other long region 15d containing the reinforcing fiber 35 is repeatedly used for the reel 1
Since the hose 15 is wound and unwound, the wear and fatigue due to the repeated expansion and contraction of the hose 15 can be suppressed.

As the filling height detecting means, a laser light level detector 10 as shown in FIG. 2 is used. In this laser light liquid level detector 10, an oscillating and light receiving device 39 including an oscillating unit 37 that oscillates a laser beam and a light receiving unit 38 that receives the laser beam reflected by the liquid surface of the filler, and the oscillating unit 3
7, a reflection mirror 40 for bending the laser light horizontally oscillated downward is provided, and the displacement of the receiving position of the laser beam received by the light receiving section 39 is detected to measure the liquid level height of the filling material. Made of In addition, on the light receiving surface of the light receiving unit 38,
You may make it interpose the polarizing plate which passes only the laser beam of a predetermined wavelength. Further, the detection signal of the liquid surface height measured by the laser light liquid level detector 10 is output to the rotary motor 14 via the control means 41 arranged at an appropriate position, and the liquid of the filling material in the compartment 2 is discharged. As the surface height increases, the discharge port 15b
The rotary motor 14 is rotated by a predetermined amount in order to raise the flexible hose 15 in a state where is located below the liquid surface.

This embodiment is constructed as described above,
Next, the operation of the cement-based filler filling device 8 according to this embodiment will be described. First, as shown in FIG. 10, a predetermined number of the drums 3 filled with low-level radioactive waste are vertically and horizontally arranged in each of the compartments 2 in the reinforced concrete structure 1 and stacked, and the openings 2b are formed. It is assumed that the lid 2a that the user has is attached to the top of each section 2. In this case, the mixed soil 5 and cover soil 6 shown in the figure
Has not yet been constructed. In this state, the laser light liquid level detector 10 is located at the center of the opening 2b, and the pair of guide pipes 20, 20 of the pair of filling devices 9, 9 are provided.
Cement-based filler filling device 8 so that the
To arrange. In this case, each pair of guide pipes 20, 2
0 and the laser beam of the laser light level detector 10 in the narrow space between the drum cans 3 which are arranged next to each other in the inside, so as to reach the bottom surface of the section 2 without being disturbed, The device 8 is positioned.

Then, when the bottom surface of the section 2 is measured by the laser light liquid level detection device 10, a control signal is output to the rotary motor 14 via the control means 41, and the reel 13 is rotated by a predetermined number of rotations. As a result, the reel 13
The flexible hose 15 wound around is smoothly unwound through the guide roller 29, and the weight of the flexible hose 15 guides the flexible hose 15 to the pair of guide pipes 20, 20 whose ends are connected by the fixing band 24. While descending linearly together, it is stopped when it reaches the bottom surface of the compartment 2. In this state, a cement-based filler such as mortar is pressure-fed by a pressure-fed pump from, for example, a concrete mixer truck (not shown), and is discharged from the pipe 16 through the flexible hose 15 to the bottom surface of the section 2 from the tip discharge port 15b. It The discharged filling material flows through the gaps between the drums 3 and 3 and the side walls of the compartment 2 and the drums 3 and is filled in every corner, and the liquid level of the filling material gradually increases.

The liquid surface height is continuously measured by the laser light liquid level detector 10 and input to the control means 41, and a control signal is sent to the rotary motor 14 at preset time intervals or height intervals. Output. The rotary motor 14 is driven in response to an input signal to rotate the reel 13 by a necessary amount in a direction in which the flexible hose 15 is wound, and as the liquid level rises, the tip of the hose 15 is buried below the liquid level of the filling material. It is lifted from the bottom surface of the section 2 in the state of being kept. At this time, the pair of guide pipes 20, 20 are lifted together with the hose 15 against the weight thereof and guided by the bush 22. In this way, the filling material is continuously discharged from the hose 15, the liquid level height of the filling material is measured by the laser light liquid level detection means 10, and the liquid level of the filling material rises based on this measurement information. The hose 15 is guided by the ascending guide pipes 20 and 20 and is wound up.

In this case, even if the pulsation of pressure feeding by the pressure feeding pump is transmitted to the flexible hose 15, the tip region 15c thereof is fixed to the pair of guide pipes 20, 20 at both ends thereof by the fixing band 24. When
Not only can the tip discharge port 15b of the flexible hose 15 be reliably prevented from coming off the guide pipes 20, 20, but it can also be prevented from swinging in the up-down direction and the front-rear, left-right direction, and can be filled gently and reliably in a narrow space. The material can be filled. In this way, when the filling of the filling material in one section 2 is completed, the cement-based filling material filling device 8 is moved to the lid 2a of the other section 2 and similarly the filling of the filling material is sequentially performed from the bottom surface. Will be done.

As described above, according to this embodiment, the compartment 2
To leave residue other than the drums 3 and fillers in the compartments in the narrow and dark gaps that form the unevenness of each row of the drums 3 filled with low-level radioactive waste stacked inside. Without filling, the filling material can be filled, and at the time of filling, while the liquid level height of the filling material is automatically measured, the tip discharge port 15b of the flexible hose 15 is buried under the filling material liquid level. There is an advantage that the hose 15 can be raised automatically following the rising liquid level and the filling material can be continuously filled up to a predetermined height. Therefore, it is possible to bury low-level radioactive waste safely and reliably. Moreover, since the tip end discharge port 15b of the flexible hose 15 is sandwiched and fixed by the pair of guide pipes 20, 20, the tip end of the hose 15 is disengaged or swung due to pulsation when the filling material is pressure fed by the pressure feed pump. Can be suppressed. Moreover, since the hose 15 is wound up by the reel 13 when rising, the hose 15 can be reliably advanced and retracted in the vertical direction while being guided by the guide pipes 20, 20, and the hose 15 does not bend or stretch. Furthermore, the flexible hose 15
The reinforcing steel wire 3 is provided in the tip region 15c near the discharge port 15b.
4 is included to strengthen the rigidity and strength of this portion, and the hose 15 is prevented from falling off, expanding or contracting. In addition, the reinforcing fiber 35 is included in the other region 15d to increase the strength of the hose 15 while having flexibility, and even when the hose 15 is repeatedly wound up and unwound on the reel 13, the hose 15 is expanded or contracted. Fatigue and wear can be suppressed.

In the above embodiment, the guide pipe 20 is used.
Although the two guide pipes 20 are arranged in parallel and the tip of the flexible hose 15 is fixed between the tip portions of the pipes 20, 20, the guide pipe 20 does not necessarily have to be two, and the hose 15 is sandwiched, for example. As described above, three or four or more may be arranged at a predetermined interval. Alternatively, a configuration in which only one is provided and the hose 15 is fixed thereto may be adopted. Alternatively, the guide pipe 20 may be formed into various cylinders having an inner diameter slightly larger than that of the hose 15, and the tip of the hose 15 may be fixed to the cylinder and moved vertically to guide the hose 15. Alternatively, the flexible hose 15 may be slidably connected to the guide pipe 20, and in this case, the guide pipe 20 does not have to move up and down integrally with the hose 15. In short, any guide member may be used as long as it guides the up-down movement of the distal end discharge port 15b of the flexible hose 15.
In the embodiment, the guide pipe 20 is moved up and down by the flexible hose 15. However, a moving mechanism including a driving source and a transmission mechanism is separately provided, and the guide pipe 20 is actuated separately by receiving a signal from the control means 41. You may do it.

Further, in the embodiment, as the injection pipe for feeding the filling material, the flexible hose 15 is constituted by a wear-resistant rubber hose, but it is not necessarily limited to the rubber hose, and various other flexible elasticity is used. You may adopt the body. Moreover, the steel wire 34 does not necessarily have to be built in as a reinforcing material of the flexible hose 15, and the fiber 35 may be included over the entire length. Alternatively, in the tip region 15c, the steel wire 34 is superposed on the reinforcing fiber 35.
May be wound to form the hose 15. Moreover, the number of the reinforcing fibers 35 to be laminated is not limited to eight, but can be appropriately laminated. Needless to say, the reinforcing material is not limited to the fiber 35 and the steel wire 34, and an appropriate material such as a wire mesh can be adopted. The laser light liquid level detector 10 may have a structure in which the measuring optical path is shielded by a shielding member such as a dark curtain, and the control is stabilized by shielding natural light. Also, as a fastening means, a fixed band 2
Although 4 is used, other fixing members may be used, or the hose 15 may be directly connected to the guide pipe 20 by using a screw or the like.

[0027]

As described above, the cement-based filler filling device according to the present invention has a hose actuating mechanism for holding the tip discharge port of the flexible hose constituting the injection pipe so as to be vertically movable, and the tip discharge of the flexible hose. A guide member for guiding the vertical movement of the outlet, a filling height detecting means for measuring the liquid level of the filling material, and a control for controlling the operation of the hose operating mechanism based on the detection signal output from the filling height detecting means. Means is provided, and the flexible hose is raised according to the liquid level of the filling material so that the filling material is continuously injected into the burying space, so that the filling material is kept in a narrow and dark space in the burying space. Even if there is, it is possible to fill the filling material without leaving any residue other than the buried material and the filling material, and at the time of filling, while measuring the liquid level of the filling material automatically, tip So as to automatically follow the liquid level to rise, there is an advantage in that it is filled the filling material continuously. Therefore, it is possible to bury low-level radioactive waste safely and reliably.

Further, since the reel for winding the flexible hose is provided in the hose operating mechanism, and the flexible hose is wound and unwound by the rotation of the reel, the flexible hose tip discharge port is provided. The vertical movement of the can be controlled easily and reliably. or,
Since a guide roller for guiding the movement of the flexible hose is provided between the reel and the guide member, the flexible hose smoothly moves between the reel and the guide member via the guide roller. Since the flexible hose contains reinforcing fibers, it has flexibility and high rigidity and abrasion resistance, and the hose is repeatedly advanced and retracted during filling, and pulsates when the filling material is pumped. However, its durability is great. The flexible hose is made of wear-resistant rubber hose, and the part wound by the hose actuating mechanism contains the reinforcing fiber, and the tip discharge port area contains the reinforcing metal wire. The wound portion has both flexibility and strength capable of suppressing fatigue and wear due to its expansion and contraction, and its tip discharge port region has high strength and rigidity even if it oscillates due to pulsation or the like. Since the filling height detecting means is a laser light level detector that irradiates a laser beam on the liquid surface and receives the reflected light to measure the liquid level, the filling level automatically Can be measured and the tip of the flexible hose can be tracked. Since the flexible hose and the tip of the guide member are fixed by the fastening member, the guide member can be moved integrally by simply moving the hose up and down, and the hose can be prevented from swinging or falling due to pulsation.

[Brief description of drawings]

FIG. 1 is a plan view and a side view in which a cement-based filler filling device according to an embodiment of the present invention is provided in one of the sections constructed of a reinforced concrete structure.

[Fig. 2] Part of a cement-based filler filling device,
It is a principal part perspective view of a filling device and a laser beam liquid level detector.

FIG. 3 is a front view of the vicinity of the reel of the filling device shown in FIG.

FIG. 4 is a plan view of the filling device shown in FIG.

5 is a side view of the filling device shown in FIG. 3. FIG.

6 is a front view of a main portion of a guide pipe of the filling device shown in FIG.

FIG. 7 is a side view of a main part of the guide pipe shown in FIG.

FIG. 8 is a horizontal cross-sectional view showing a connection structure between a flexible hose tip and a guide pipe tip.

FIG. 9 is a partial cross-sectional view of a flexible hose.

FIG. 10 is a perspective view showing a vertical cross section in a state where the drums are housed and filled with a filler in each of the sections constructed of the reinforced concrete structure.

[Explanation of symbols]

 3 Drum can 8 Cement-based filler filling device 9 Filling device 10 Laser light level detector 13 Reel 14 Rotation motor 15 Flexible hose 20 Guide pipe 24 Fixed band

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication G21F 9/34 C

Claims (7)

[Claims] 1. A cement-based filler filling method in which a cement-based filler is injected into an embedding space by an injection pipe, and the filler is injected while raising the injection pipe according to the rise of the liquid level of the filler. In the device, the injection pipe includes a flexible hose, and a hose actuation mechanism that holds the tip discharge port of the flexible hose so that the tip discharge port can move up and down in the embedded space, and a vertical movement of the tip discharge port of the flexible hose. A guide member for guiding in the burying space, a filling height detecting means for measuring the liquid level of the filling material in the burying space, and the hose operation based on a detection signal output by the filling height detecting means. A cement that is provided with a control means for controlling the operation of the mechanism, and that continuously injects the filler into the embedding space while raising the flexible hose according to the liquid level of the filler. Filler filling device. 2. The hose actuating mechanism is provided with a reel for winding a flexible hose, and the flexible hose is wound and unwound by rotation of the reel. Item 1. The cement-based filler filling device according to Item 1. 3. The cement-based filler filling device according to claim 2, wherein a guide roller for guiding the movement of the flexible hose is provided between the reel and the guide member. 4. The cement-based filler filling device according to claim 1, wherein the flexible hose contains reinforcing fibers. 5. The flexible hose is composed of a wear-resistant rubber hose, and a portion wound by the hose actuating mechanism contains a reinforcing fiber, and a tip end region thereof contains a reinforcing metal wire. Claim 2 characterized in that
5. The cement-based filler filling device according to any one of 1 to 4. 6. The filling level detecting means is a laser light liquid level detector for irradiating a liquid surface with a laser beam and receiving the reflected light to measure the liquid surface height. Item 6. The cement-based filler filling device according to any one of Items 1 to 5. 7. The cement-based filler filling device according to claim 1, wherein the flexible hose and the tip of the guide member are fixed to each other by a fastening member.