JP2002242446A - High pressure injection apparatus for fragile construction body and high pressure injection construction method using this apparatus and funnel jig of fixing chemical - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high pressure injection apparatus for a fragile construction body capable of filling adhesive chemicals, and capable of installing an anchor. SOLUTION: This high pressure injection apparatus 10 comprises a roughly slender pipe member 12, a nipple member 14 fixed to one end side of the pipe member 12, a check valve member 16 fixed to the other end side of the pipe member 12 as a separate part, and a sponge member 18 installed on the intermediate part outer periphery of the pipe member 12. Thus, the high pressure injection apparatus 10 forms a chemical injection hole in the fragile construction body such as a world heritage and a brick building since the Meiji era causing a space part such as a crack and clearance, and can inject the adhesive chemicals under high pressure into the space part and the fragile construction body via the chemical injection hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to cracks, cracks,
A hole for a chemical solution is formed in a brittle structure in which a space such as a gap is generated, and is used when a high-pressure adhesive drug solution is injected into the space and / or the brittle structure through the hole for a drug solution. The present invention relates to a high-pressure injection device for a brittle structure and a high-pressure injection method for a brittle structure performed using such a high-pressure injection device, and in particular, an atomic bomb dome at Tokyo Station or Hiroshima from the Meiji era, or the Great Wall of China. The present invention relates to a high-pressure injection device for brittle structures and a high-pressure injection method for brittle structures that can be used for repairing and repairing brittle structures such as world heritage buildings such as Angkor Wat.

[0002]

2. Description of the Related Art Many World Heritage sites, such as the Great Wall of China and Angkor Wat, are at risk and need to be restored or preserved. Most of the problems are stone structures, which are difficult to maintain. Even in Japan, the brick-built Tokyo Station and the Atomic Bomb Dome in Hiroshima, which have been around since the Meiji era, must be left as they are. The materials are stone, concrete, brick, etc., and the highest materials have been used in the technology at that time. However, these materials were easy-to-process andesite and granite, and bricks were close to sun-dried due to the inability to make high-temperature pottery. Concrete was also made of lime-like material. When 100 years or 1000 years have passed, such a structure has been ragged and collapsed, and a large lump has been cracked. Many of these causes are natural destructions caused by earthquakes, temperature changes, ultraviolet rays, carbon dioxide gas, and the like. In recent years, acid rain, collapse by humans, and the like have been added, and the progress of collapse has been accelerated.

In order to repair and preserve such a valuable building without losing its original shape and function, the latest technology is required. Unlike these modern constructions, stones are made of easy-to-cut materials, bricks are made of hardness and density close to sun-dried, and concretes are made of year-old materials. No reinforcing steel bars are used.

[0004]

The present construction method is difficult to cope with such a construction, and neither a low-pressure injection method nor a high-pressure injection method of a bonding chemical can be adopted. In the conventional high-pressure injection method, a high-pressure injection plug is crimped and fixed to a chemical injection hole to inject a high-pressure chemical. However,
Since the powerful packing function of the high-pressure injection plug cannot be used for brittle materials such as stones and bricks, the high-pressure injection plug cannot be used after all. This is because if such a brittle material is forcibly expanded, the hole collapses and loses the sealing function.

For repairing modern buildings, the function can be repaired with a small amount (30 to 100 cc per location) of a chemical solution, for example, an adhesive or a waterproofing agent. In contrast, ancient structures have many gaps and large gaps, and require 10 to 100 times as many chemical solutions and reinforcement anchors as modern structures. In addition, historic buildings, brick-built buildings, and concrete buildings have cracks, cracks,
A space is created or present, such as an unfilled space of cement that should be between the bricks. When these brittle structures are injected with a bonding solution at a high pressure, they break down from unexpected sites and cause irreparable damage. Therefore, it has been said that a high-pressure injection of a bonding solution cannot be performed on such a brittle structure even by a specialist.

[0006] In response to such high-pressure injection, a method of injecting a fluid such as an adhesive, a water blocking agent, or a waterproofing agent into a crack or the like of a brittle structure at a low pressure, or a device used for such a method has also been developed. Various things have been done. Low-pressure construction methods are roughly classified into two types. A method of extruding a fluid contained in a container by applying a compressive force of a spring or a contracting force of a rubber band or a rubber bag to an adhesive chemical such as an adhesive, a water stopping agent, a waterproofing agent, and a foaming agent and a curing agent for the fluid. Cracks using its foaming power,
This is a construction method in which a fluid is slowly injected into a gap caused by cracks and surface material floating. In this low pressure injection method, the foaming chemical may not reach the depth of the crack,
There was a defect that the repair effect could not be sufficiently exhibited. In this case, when the foaming pressure is increased, the low-pressure infusion pump or the infusion plug may come off from the hole for injecting the chemical solution, and there is a problem of leakage of the foaming chemical solution.

[0007] Furthermore, since the chemical solution used in the low-pressure injection method has a low viscosity, most of the chemical solution is sucked into materials such as bricks and stones, and is not used for connecting blocks such as bricks and stones. The gap between bricks and stones is extremely large in these constructions, and the amount of injected chemical solution is usually 30-50 cc.
Instead of 500-2000cc. Therefore, the current low-pressure injection method cannot be used for these brittle structures. The present inventors have intensively studied such an old building in terms of the current earthquake resistance and the prevention of the fall of the outer wall material of the building. As a result, it has been found that it is best to fill the internal space of the building with a high-viscosity resin and to join the blocks such as bricks and blocks of stone by adding an anchor when the strength is insufficient.

Therefore, there is a demand for the development of a high-pressure injection device for a brittle structure capable of filling such a resin and installing an anchor, and a high-pressure injection method for a brittle structure using such a high-pressure injection device. It was. Furthermore, when the brittle structure to be repaired is a historic building, the chemical solution is not allowed to adhere to or penetrate the surface. Therefore, there has been a demand for the development of a jig for preventing such a situation.

[0009]

According to a first aspect of the present invention, which satisfies the above-mentioned demands, a hole for injecting a chemical is formed in a brittle structure in which a space such as a crack, a crack or a gap is formed. ,
A high-pressure injection device for the brittle structure used when injecting the adhesive drug solution into the space and / or the brittle structure at a high pressure through the drug solution injection hole, having a central hole through which the bonding agent passes, An elongated pipe member having an outer diameter smaller than the inner diameter of the chemical injection hole, a nipple member provided at one end side of the center hole of the pipe member and fluidly connectable to a chemical injection pump, and incorporated inside the nipple member Or, provided as a separate component at the other end of the center hole of the pipe member, a check valve means for preventing backflow of the drug solution injected through the center hole of the pipe member and into the depth side of the drug solution injection hole, and A fixing member attached to the outer periphery of the intermediate portion of the pipe member, the sealing member having a diameter larger than the inner diameter of the hole for injecting the liquid medicine, and being easily deformable to a smaller diameter. Brittle A high pressure infusion device for a sexual construct is provided.

According to a second aspect of the present invention, in the high-pressure injection device for a brittle structure according to the first aspect, a male screw is provided on at least one outer peripheral surface of the pipe member, and is separately manufactured as a check valve member. The obtained check valve means and / or nipple member is fixed to the end of the pipe member by screw engagement. The invention according to claim 3 is
The high-pressure injection device for a brittle structure according to claim 1 or 2, wherein the sealing member is provided by fixing both ends of a cylindrical sponge-shaped member to a pipe member.

According to a fourth aspect of the present invention, in the high-pressure injection device for a brittle structure according to any one of the first to third aspects, the pipe member has a predetermined length from a side to which the nipple member is attached. At the location, a structural weak point is provided so that the side where the nipple member of the pipe member can be attached by the beating of a hitting device such as a hammer can be broken and separated from the side remaining in the hole for injecting the chemical solution It is characterized by.

According to a fifth aspect of the present invention, in the high-pressure injection device for a brittle structure according to the second aspect, the check valve member has a central hole extending in the axial direction, and radiates from a deep portion of the central hole. At least one lateral hole extending in the direction to the outside, an O-ring elastically sealing the outer opening of the lateral hole, and engaging the rotating jig to move the check valve member to the pipe member. And an engagement means provided on an outer peripheral portion of the check valve member for relatively rotating.

[0013] A second aspect of the present invention provides a method for cracking, cracking,
A high-pressure injection method for a brittle structure in which an adhesive chemical solution is injected at a high pressure into a brittle structure in which a space portion such as a gap is generated, and a step of forming a chemical solution injection hole in the brittle structure,
The high-pressure injection device for a brittle construct according to the first aspect of the present invention, the part of the high-pressure injection device to which the nipple member is attached is protruded from the hole for injecting a chemical solution into the hole for injecting a chemical solution. The step of inserting, the step of injecting and hardening a fixing liquid between the high-pressure injection device and the hole for injecting the drug solution to fix the high-pressure injection device in the hole for injecting the drug solution, and the nipple member of the high-pressure injection device And a step of injecting a bonding agent liquid into the hole for injecting the bonding agent liquid into the hole for injecting the bonding agent liquid.

According to a seventh aspect of the present invention, there is provided the high-pressure injection device for a brittle structure according to the sixth aspect, wherein the hole for injecting the chemical is formed at a downward inclination of 15 to 45 degrees toward the inside of the brittle structure. It is characterized by being established. According to an eighth aspect of the present invention, in the high-pressure injection method for a brittle structure according to the sixth or seventh aspect, a high-pressure injection instrument inserted into a large number of vertically injected chemical solution injection holes is provided. , The adhesive liquid is sequentially injected from the side.

According to a ninth aspect of the present invention, in the high-pressure injection method for a brittle structure according to the eighth aspect, the high-pressure injection instrument is inserted into the chemical solution injection hole without the nipple member attached. When the bonding chemical is injected into the lower high-pressure injection device, it is confirmed that the bonding liquid overflows from the upper high-pressure injection device, and then the bonding liquid is injected into the corresponding chemical injection hole. Stopping, and
Attaching the nipple member to the high-pressure injection device overflowing with the adhesive chemical liquid located at the upper position, and injecting the adhesive chemical liquid. Claim 1
The invention according to claim 0, in the high-pressure injection method for a brittle structure according to any one of claims 1 to 9, after the step of injecting the adhesive chemical, further project from the chemical injection hole of the high-pressure injection instrument. Striking and removing the part that is in the air.

According to an eleventh aspect of the present invention, in the high-pressure injection method for a brittle structure according to the sixth or seventh aspect, the space generated in the brittle structure has a crack or crack connected to the surface of the brittle structure. The hole for chemical injection passes through the space from one side of the crack or crack to the other side, and the hole for chemical injection formed next to the one side from the other side. The high-pressure injection device is inserted into the hole for liquid injection without the nipple member attached, and when the injection liquid is injected into one high-pressure injection device, it is adjacent to it. A step of confirming that the bonding chemical overflows from the high-pressure injection device and stopping the injection of the bonding chemical into the chemical injection hole;
Then, a nipple member is attached to the adjacent high-pressure injection device from which the bonding chemical overflows, and a step of injecting the bonding chemical is performed.

A third aspect of the present invention is a step before inserting a high-pressure injection instrument into a chemical injection hole drilled in a brittle construction and injecting a bonding agent at a high pressure. In a funnel jig for a fixing solution used for injecting a fixing solution between a high-pressure injection device and a hole for injecting a drug solution for fixing to a pipe, the pipe member of the high-pressure injection device is substantially cylindrical and has an internal axial direction. A hole sealing plug portion having a guide groove for inserting a nozzle for injecting a fixing liquid solution provided adjacent to the insertion hole for inserting a hole, and a hole integrally formed continuously with the hole sealing plug portion. And a funnel jig for fixing liquid medicine comprising a skirt-shaped portion.

According to a thirteenth aspect of the present invention, in the funnel jig for the fixing liquid according to the twelfth aspect, an opening of the hole for injecting the liquid is provided on an outer surface of a connecting portion between the hole sealing plug and the skirt. A stopper for contact is formed, and a positioning projection is formed at the lower end of the insertion hole of the hole seal plug to fit into a structural weak point formed on the pipe member of the high-pressure injection device. Features.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A high-pressure injection device for a brittle structure according to the present invention and a high-pressure injection method for a brittle structure using the same according to the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 is a longitudinal sectional view of an embodiment of a high-pressure injection device for a brittle structure according to the present invention.

As shown in FIG. 1, a high-pressure injection device 10 according to the present invention generally comprises an elongated pipe member 1.
2, a nipple member 14 fixed to one end of the pipe member 12, a check valve member 16 fixed as a separate component to the other end of the pipe member 12, and an outer periphery of an intermediate portion of the pipe member 12. And a sponge member 18.

The pipe member 12 is a metal pipe. It has a certain mechanical strength to serve as an anchor. An external thread 12b is provided on the entire outer peripheral surface of the pipe member 12 for a reason described later. The pipe member 12 also has a central hole 12a penetrating in the axial direction. The outer diameter of the pipe member 12 is smaller than the inner diameter of the hole 1 for injecting a chemical. A constricted portion 12c is formed at a position of a predetermined length from the side of the pipe member 12 to which the nipple member 14 is attached. High pressure injection device 1 of the present invention
0 is inserted into the chemical liquid injection hole 1 to inject the adhesive chemical liquid, and then the nipple member 14 is beaten by a hitting tool such as a hammer (not shown). Thereby, this constricted part 1
The outer side than 2c is easily broken / separated from the side remaining in the liquid injection hole 1.

The nipple member 14 is detachably attached to a coupling for injecting a chemical solution of a chemical infusion pump. In the illustrated preferred embodiment, the internal thread 14b formed inside the central hole 14a is connected to the external thread 12b of the pipe member 12.
Is screw-engaged.

The check valve member 16 is provided as a separate component at the lower end of the pipe member 12. The check valve member 16 can employ various check valve mechanisms, but in the illustrated preferred embodiment, an O-ring type which can be manufactured at low cost and can be easily miniaturized is adopted. did. That is, the check valve member 16 has a central hole 16a extending in the axial direction, at least one lateral hole 16b extending radially from the depth of the central hole 16a to the outside, and an outer opening of the lateral hole 16b elastically. O-ring 16c for sealing
And a hexagon provided on the outer periphery of the check valve member for engaging with a rotation jig such as a spanner (not shown) to rotate the check valve member 16 relatively to the pipe member 12. And a nut surface 16d.

The check valve member 16 allows the pipe member 1
The backflow of the chemical liquid that has passed through the center hole 12a of the second liquid and injected into the deep side of the liquid injection hole 1 can be prevented. The non-return valve means can also be incorporated inside the nipple member 14, as in the other embodiment shown in FIG. Conventionally known grease nipples can be used as they are,
It can be procured at low cost. As shown in FIG. 2, the nipple member 15 according to this embodiment has a central hole 15
A ball 15b is disposed near the mouth of a, and is pressed toward the mouth by a spring 15c to prevent the backflow of the chemical solution. In this case, it is not necessary to provide the check valve member 16 as shown in FIG.

The sponge member 18 is preferably of a closed-cell type. This is because it is not affected by the chemical solution. The outer diameter of the sponge member 18 has a diameter larger than the inner diameter of the chemical solution injection hole 1 in a normal state. However, when inserting the high-pressure injection device 10 into the hole 1 for chemical injection, the high-pressure injection device 10 is easily contracted and becomes smaller than the inner diameter of the hole 1 for injection. Can be inserted into Nevertheless, when the fixing agent is injected between the liquid injection hole 1 and the high-pressure injection device 10, the fixing liquid flows through the sponge member 18 toward the back of the liquid injection hole 1. Block it so that there is nothing.

Although the fixing solution tends to shrink when it is hardened, the external thread 12b is formed over the entire outer peripheral surface of the pipe member 12.
Is provided, there is an effect that the connection between the pipe member 12 and the fixing solution is strongly prevented from coming off. Sponge member 1
8 can be fixed to the outer peripheral surface of the pipe member 12 by various methods. In the preferred embodiment shown, the sponge member 18 is tied at both ends with a pipe member 1.
It is fixed to 2.

Next, a high-pressure injection method for a brittle structure using the high-pressure injection device 10 according to the first embodiment of the present invention will be described in detail with reference to FIGS. FIG.
FIG. 4 is a front view for explaining a formation position of a chemical solution injection hole 1 when a high-pressure injection method for a brittle structure according to the present invention is performed on a brick wall.

As shown in the drawing, the bricks 3 constituting the brick wall are usually stacked alternately so that the joints 5 are not aligned. A plurality of holes 1 for chemical liquid injection are formed in the joint 5 at substantially equal intervals. FIG. 4 is a longitudinal sectional view taken along the line AA, and FIG. 5 is a longitudinal sectional view taken along the line BB. Looking at the vertical direction, the chemical injection hole 1 drilled along the line AA is formed to be shifted by one step of the brick 3 as compared with the chemical injection hole 1 drilled along the BB line. Have been. In addition, as clearly shown in FIGS. 4 and 5, the chemical solution injection hole 1 is formed with a downward inclination of 15 to 45 degrees, preferably a downward inclination of 23 to 37 degrees toward the inside of the brick wall. Is done. When the length of the hole 1 for chemical injection is 30 to 50 cm, the hole is formed so as to penetrate a plurality of bricks 3 in this angle range, and the anchor effect is extremely good. In addition, the bonding agent permeates the joints 5 and the bricks 3 in the plurality of steps, so that they can be efficiently and integrally connected.

Next, a high-pressure injection method for a brittle structure according to the second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 6, the high-pressure injection method for a brittle structure according to the present invention schematically includes a step of forming a large number of chemical injection holes (step 1) and a step of forming a hole in the chemical injection hole 1. Step of inserting the high-pressure injection device 10 (Step 2), Step of injecting the liquid medicine for fixing (Step 3), Step of high-pressure injection of the liquid medicine for adhesion (Step 4), and Step of smashing the nipple member 14 side portion ( Step 5).

Step 1 of forming a large number of holes for injecting a chemical solution is as follows:
Using an electric drill (not shown), as shown in FIG. 3, a large number of holes 1 for chemical liquid injection are formed so as to be evenly dispersed. The chemical solution injection hole 1 is formed so as to reach a portion of the building to be repaired, for example, a thickness position of about half to 5/3 of the brick wall. The width of the joint 5 is usually 2
About 15 mm. Therefore, in consideration of the mechanical strength of the high-pressure injection device 10 as a packer, it is presumed that a device having a diameter of 10 mm is the best. The angle with respect to the horizontal was preferably about 30 degrees from the viewpoint of workability.

In the present embodiment, a method of continuously working from the lower one to the upper one of the holes 1 for chemical solution injection is employed. Therefore, the high pressure injection device 10 shown in FIG. 1 was used, and the nipple member 14 was not screwed to one end of the pipe member 12. In the step 2 of inserting the high-pressure injection device into the chemical injection holes, these are inserted into the multiple chemical injection holes 1. The high-pressure injection device 10 includes a portion of the construct to be repaired,
For example, it is inserted so as to reach a position about half the thickness of the brick wall.

Then, in the injection step 3 of the fixing solution,
Using the injection pump 7 having the fine nozzle 7a, the fixing liquid is sequentially injected between the liquid injection hole 1 and the high-pressure injection device 10. The infusion pump 7 does not need to be particularly high in pressure. Further, the same fixing solution may be used as the fixing solution, but if workability is important, it is preferable to use a solution having a high curing speed.

At the stage when the fixing solution is hardened and the high-pressure injection device 10 is firmly fixed in the solution injection hole 1, high-pressure injection of the bonding solution is started. In the high-pressure injection step 4 of the bonding chemical, for example, when starting from the chemical injection hole 1 arranged along the line AA in FIG. The pump used to inject the adhesive chemical is of high pressure,
That is, the high-pressure injection pump 9 is used. For example, when injection is performed at a maximum pressure of 7 to 15 MP, 500 to 1000 cc of this kind of adhesive agent (30,000 to 300,000 CP) can be completed in several places to several tens of seconds. Such high pressure injection has the effect of quickly and deeply filling the space existing in the brick wall, that is, the unfilled portion of the cement and the cracks and cracks generated in the brick.
Further, the adhesive penetrates into the brick itself, and after a while, the bonding agent oozes from the high-pressure injection device 10 above the high-pressure injection device 10 that is being injected.

Therefore, the injection of the bonding agent into the high-pressure injection device 10 is terminated, and the nipple member 14 is connected to the upper high-pressure injection device 10 from which the bonding agent is oozing.
And connect the high-pressure infusion pump 9 (step 6). This step is performed before or after Step 5.
This operation is continued along the line AA to the top, and when the operation is completed, the process moves to the next column. After a lapse of a predetermined time, the portion of the high-pressure injection device 10 protruding from the drug solution injection hole 1, that is, the portion of the nipple member 14 is hit with a hammer or the like, and the portion is cracked. On the other hand, the main part of the high-pressure injection device 10 is left inside the drug solution injection hole 1, and this portion serves as an anchor.

The hole 1 for chemical injection can be closed with a stopper or putty. When applying mortar or the like to the surface, instead of hitting the portion of the nipple member 14 with a hammer or the like, a net for attaching mortar can be connected and fixed to the nipple member 14 or its vicinity.

FIG. 7 is a schematic view for explaining a high-pressure injection method for a brittle structure when the space generated in the brittle structure is a crack or a crack connected to the surface of the brittle structure. FIG. 8 is a flowchart of another embodiment that is a high-pressure injection method for a brittle structure according to the present invention.

When the space generated in the brittle structure is a crack or a crack 4 connected to the surface of the brittle structure 2,
First, the hole for chemical injection is passed through the space from one side surface of the crack or crack to reach the inside of the other side, and the hole for chemical injection formed next to the hole is one side from the other side surface. (Step 10). Then, similarly to the above-described first embodiment, the high-pressure injection device 10 is inserted into the drug solution injection hole 1 in a state where the nipple member is not attached (Step 1).
1). Further, using an injection pump having a fine nozzle,
The fixing liquid is sequentially injected between the liquid injection hole 1 and the high-pressure injection device 10 (step 12).

At the stage when the fixing solution is hardened and the high-pressure injection device 10 is firmly fixed in the solution injection hole 1, the bonding solution is injected into one high-pressure injection device 10 (step 1).
3). When it is confirmed that the adhesive solution overflows from the high-pressure injection device 10 adjacent to the high-pressure injection device 10 being injected, the injection of the adhesive solution into the chemical injection hole is stopped (step 14). Next, the nipple member 14 is attached to the adjacent high-pressure injection device 10 from which the adhesive liquid overflows, and then the adhesive liquid is injected using the high-pressure injection pump 9 (step 15). This is continued until all the high-pressure injection devices 10 have been injected with the adhesive agent.

Next, a funnel jig for a fixing solution according to the third embodiment of the present invention will be described in detail with reference to FIG. FIG.
1A and 1B are a longitudinal sectional view and a left side view, respectively, showing an embodiment of a funnel jig for a fixing solution according to the present invention. As shown in the figure, a funnel jig 20 for a fixing solution according to the present invention has a substantially cylindrical hole sealing plug 22 and a skirt-like portion formed continuously and integrally with the hole sealing plug 22. And a part 24. Preferably, it is integrally molded with elastic rubber or soft plastic. The hole sealing plug 22 is provided with an insertion hole 22a for inserting the pipe member 12 of the above-described high-pressure injection device 10 and an injection pump 7 for injecting a fixing solution provided adjacent to the insertion hole 22a in the inner axial direction. And a guide groove 22b for inserting the thin nozzle of FIG.

In the preferred embodiment shown in the drawings, a stop 26 is formed on the outer surface of the connection between the hole sealing plug 22 and the skirt 24 so as to be in contact with the mouth of the hole 1 for injecting the chemical.
Further, at the lower end of the insertion hole 22a of the hole seal plug 22, a positioning projection 22c that fits into a structural weak point portion 12c formed in the pipe member 12 of the high-pressure injection device 10 is formed. The funnel jig 20 is attached to the high-pressure injection device 10 such that the projection 22c fits into the structural weak point portion 12c formed on the pipe member 12.

Accordingly, by appropriately setting the distance from the projection 22c to the stop portion 26, there is an effect that the insertion position of the high-pressure injection device 10 into the chemical liquid injection hole 1 can be easily and accurately controlled. That is, by inserting the stopper 26 of the funnel jig 20 until the stopper 26 comes into contact with the mouth of the drug solution injection hole 1, the structural weak point portion 12c of the high-pressure injection device 10 is naturally disposed at an appropriate folding position. Become. Also,
The entire high-pressure injection device 10 also has the effect of being arranged at an appropriate position in the chemical solution injection hole 1. Further, when the funnel jig 20 is made of an elastic material or a soft material, it is possible to seal the hole 1 for injecting a chemical solution, and to almost completely avoid contamination of the wall surface with the chemical solution for fixing. Can be.

FIG. 10 is a cross-sectional view showing a state in which the funnel jig shown in FIG. 9 is attached to a high-pressure injection device and inserted into a hole for injecting a chemical solution. As shown in the figure, a funnel jig 20 is mounted with the nipple member 14 or 15 removed while inserting the high-pressure injection device 10 into the chemical solution injection hole 1 drilled in the brittle structure 2. At this time, the protrusion 22c
Fits into the structural weak spot 12c formed in the pipe member 12, and the funnel jig 20
Attached to. When the high-pressure injection device 10 is inserted into the chemical injection hole 1, the stop 26 of the funnel jig 20 stops at a position where the stop 26 contacts the mouth of the chemical injection hole 1.

The fine nozzle of the injection pump 7 is inserted into the guide groove 22b of the funnel jig 20, and the fixing solution is injected into the high-pressure injection device 2.
0 and the hole 1 for chemical injection. After a predetermined time has elapsed, the fixing liquid is hardened and the high-pressure injection device 10 is firmly fixed to the liquid injection hole 1, and the high-pressure injection pump 9 is used to inject the bonding agent into the high-pressure injection device 10. . As described above, when the nipple member 14 or 15 is mounted in advance and the high-pressure infusion device 10 is inserted into the drug solution injection hole 1, the high-pressure infusion pump 9 is mounted as it is, and when they are not mounted, After the nipple member 14 or 15 is mounted as needed, the bonding agent is injected under high pressure. After a predetermined time has passed and the adhesive agent has cured,
The head of the high-pressure injection device 10 is hit using a hitting member such as a hammer. Thereby, the nipple member 14 or 15 side of the high-pressure injection device 10 protruding from the surface of the brittle structure 2 is broken / separated.

As described above, by using the funnel jig 20 of the present invention, when the fixing liquid is injected, the spilled liquid is received by the skirt portion 24, thereby avoiding a situation in which the wall surface is stained with the liquid. it can. Conventionally, 2-3 times the time of the injection of the adhesive agent is scraped off the adhesive on the wall,
Although spent on cleaning, the present invention made such work completely unnecessary.

[0045]

According to the first aspect of the present invention, an elongated pipe member having a central hole through which an adhesive agent passes and having an outer diameter smaller than the inner diameter of the chemical solution injection hole, and a central hole of the pipe member. A nipple member provided on one end side and fluidly connectable to a chemical liquid injection pump, and provided as a separate component at the other end side of the center hole of the pipe member or incorporated in the inside of the nipple member. Non-return valve means for preventing backflow of the medicinal solution which passes through and is injected into the back side of the medicament injection hole,
And a sealing member for a fixing chemical solution, which is attached to the outer periphery of the intermediate portion of the pipe member and has a diameter larger than the inner diameter of the hole for injecting the chemical solution and is easily deformable to a smaller diameter. Since a high-pressure injection device for a brittle structure is provided, the high-pressure injection device for a brittle structure capable of filling with a resin and installing an anchor is provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of a high-pressure injection device according to the present invention.

FIG. 2 is a longitudinal sectional view of another embodiment of the high-pressure injection device according to the present invention.

FIG. 3 is a front view for explaining a formation position of a chemical solution injection hole 1 when a high pressure injection method for a brittle construction according to the present invention is performed on a brick wall.

FIG. 4 is a longitudinal sectional view taken along the line AA in FIG. 3;

FIG. 5 is a longitudinal sectional view taken along the line BB of FIG. 3;

FIG. 6 is a flowchart of an embodiment of a high-pressure injection method for a brittle structure according to the present invention.

FIG. 7 is a schematic view for explaining a high-pressure injection method for a brittle structure when a space generated in the brittle structure is a crack or a crack connected to the surface of the brittle structure.

FIG. 8 is a flowchart of another embodiment that is a high-pressure injection method according to the present invention.

FIGS. 9A and 9B are a longitudinal sectional view and a left side view showing one embodiment of a funnel jig for a fixing solution according to the present invention, respectively.

FIG. 10 is a cross-sectional view showing a state in which the funnel jig shown in FIG. 9 is mounted on a high-pressure injection device and inserted into a chemical solution injection hole.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 chemical injection hole 3 brick 5 joint 7 injection pump 9 high-pressure injection pump 10 high-pressure injection device 12 pipe member 14 nipple member 16 check valve member 18 sponge member 20 funnel jig 22 hole seal plug portion 24 skirt-shaped portion 26 stop portion

Claims (13)

[Claims] A chemical solution injection hole is formed in a brittle structure in which a space portion such as a crack, a crack, a gap or the like is generated, and adhesiveness is provided to the space portion and / or the brittle structure through the chemical solution injection hole. A high-pressure injection device for a brittle structure used when injecting a chemical solution at a high pressure, having a central hole through which an adhesive agent passes, and an elongated pipe member having an outer diameter smaller than the inner diameter of the drug solution injection hole, A nipple member provided at one end of the center hole of the pipe member and fluidly connectable to a chemical solution injecting pump; and a nipple member incorporated inside the nipple member or provided as a separate component at the other end of the center hole of the pipe member. Non-return valve means for preventing backflow of a chemical solution injected through the center hole of the pipe member into the inner side of the chemical solution injection hole, and the chemical solution attached to an outer periphery of an intermediate portion of the pipe member, From the inside diameter of the injection hole And easily high pressure injection device for brittle constructs the sealing member of deformable fixing chemical to a smaller diameter than, and characterized by being configured to include a has a larger diameter. 2. The high-pressure injection device for a brittle structure according to claim 1, wherein a male screw is provided on at least one outer peripheral surface of the pipe member, and a check valve means separately manufactured as a check valve member. And / or the high pressure injection device for a brittle structure, wherein the nipple member is fixed to an end of the pipe member by screw engagement. 3. The high-pressure injection device for a brittle structure according to claim 1, wherein the sealing member is provided by fixing both ends of a cylindrical sponge-shaped member to the pipe member. A high-pressure injection device for a brittle structure, characterized in that: 4. The high-pressure injection device for a brittle construction according to claim 1, wherein a hammer or the like is provided at a position of a predetermined length from a side of the pipe member to which the nipple member is attached. A brittleness characterized in that a brittleness portion is provided that allows a side of the pipe member to which the nipple member is attached to be broken or separated from a side remaining in the hole for injecting a chemical solution by hitting the hitting device with a brittleness. High pressure injection device for the construct. 5. The high-pressure injection device for a brittle structure according to claim 2, wherein the check valve member has a central hole extending in an axial direction, and extends radially from a deep portion of the central hole to communicate with the outside. At least one lateral hole, an O-ring for elastically sealing an outer opening of the lateral hole, and engaging a rotating jig to rotate the check valve member relative to the pipe member; A high-pressure injection device for a brittle structure, comprising: an engagement means provided on an outer peripheral portion of the check valve member. 6. A high-pressure injection method for a brittle structure in which an adhesive chemical solution is injected at a high pressure into a brittle structure in which a space such as a crack, a crack, a gap or the like is generated, wherein a chemical solution is injected into the brittle structure. Forming a hole for the high-pressure injection device for a brittle construction according to any one of claims 1 to 5, wherein a part of the high-pressure injection device on the side to which the nipple member is attached is from the hole for drug solution injection. Protruding and inserting the inside of the medicinal solution injection hole; and injecting and curing a fixing medicinal solution between the high-pressure injecting device and the medicinal solution injecting hole, and inserting the high-pressure injecting device into the medicinal solution injecting hole. Fixing to a hole, fluidly connecting an injection pump for an adhesive liquid to the nipple member of the high-pressure injection device, and injecting the adhesive liquid into the hole for liquid injection. High pressure injection for construction Law. 7. The high-pressure injection method for a brittle structure according to claim 6, wherein the hole for injecting the chemical is 15 to 4 toward the inside of the brittle structure.
A high-pressure injection method for a brittle structure, wherein the method is drilled at a downward inclination of 5 degrees. 8. A high-pressure injection method for a brittle structure according to claim 6 or 7, wherein a plurality of high-pressure injection instruments inserted into a large number of vertically injected chemical solution injection holes are sequentially arranged from the bottom. A high-pressure injection method for brittle structures, characterized by injecting an adhesive chemical. 9. The high-pressure injection method for a brittle structure according to claim 8, wherein the high-pressure injection device is inserted into the chemical injection hole in a state where the nipple member is not attached, and the bonding chemical is injected. When injecting into the lower high-pressure injection device, confirming that the bonding chemical liquid overflows from the upper high-pressure injection device and stopping the injection of the bonding chemical liquid into the chemical liquid injection hole; And attaching a nipple member to the high-pressure injection device overflowing with the adhesive liquid located at a higher position, and injecting the adhesive liquid, and a high-pressure injection method for a brittle structure. 10. The high-pressure injection method for a brittle structure according to claim 1, further comprising, after the step of injecting the bonding chemical, further projecting from the chemical injection hole of the high-pressure injection device. High pressure injection method for a brittle construction, comprising the step of hitting and removing a portion that is in contact. 11. The high-pressure injection method for a brittle structure according to claim 6, wherein the space generated in the brittle structure is a crack or a crack connected to the surface of the brittle structure, and the chemical solution injection is performed. The hole should extend from one side of the crack or crack through the space to the other side, and the hole for chemical injection formed next to it should extend from the other side to one side. Formed in a staggered manner, the high-pressure injection device is inserted into the drug solution injection hole in a state where the nipple member is not attached, and when the bonding drug solution is injected into one high-pressure injection device,
A step of confirming that the adhesive chemical overflows from the adjacent high-pressure injection device and stopping the injection of the adhesive chemical into the chemical injection hole, and an adjacent high-pressure overflow of the adhesive chemical. Attaching a nipple member to an injection device and injecting a bonding solution, and a high-pressure injection method for a brittle structure. 12. A fixing device for fixing the high-pressure injection device to the drug solution injection hole in a process before inserting the high-pressure injection device into the drug solution injection hole formed in the brittle structure and injecting the bonding agent at a high pressure. In a funnel jig for a fixing solution used for injecting a drug solution between a high-pressure injection device and a drug solution injection hole, a substantially cylindrical shape, an insertion hole for inserting a pipe member of the high-pressure injection device in an internal axial direction, and A hole sealing plug provided adjacent to the insertion hole and having a guide groove for inserting a nozzle for injecting a fixing solution, and a skirt-like portion integrally formed continuously with the hole sealing plug. And a funnel jig for fixing liquid medicine comprising: 13. The fixing funnel jig according to claim 12, wherein a stop portion which is in contact with a mouth portion of the chemical solution injection hole is provided on an outer surface of a connection portion between the hole seal plug portion and the skirt-shaped portion. A fixing projection is formed at a lower end portion of the insertion hole of the hole sealing plug portion, and a positioning projection is formed to fit into a structural weak point formed on a pipe member of the high-pressure injection device. Funnel jig for chemicals.