TW201811424A - Water stop liquid mixing injection system, water stop liquid mixing injection plug, and water stop method for cement base composition structure capable of reducing clogging of the parts of the water stop liquid mixing injection system with cured material and easily removing and cleaning even if the parts are clogged - Google Patents

Abstract

The technical problem to be solved of this invention is to provide a water stop liquid mixing injection system capable of reducing clogging of the parts of the water stop liquid mixing injection system with cured materials and easily removing and cleaning even if the parts are clogged. The solution provided by this invention is a water stop liquid mixing injection system provided with two tanks (T1, T2) for storing two kinds of water stop liquids respectively; high pressure pumps (P1, P2) connected to each tank for supplying two water stop liquids, respectively; an injection tool (10A) for converging and injecting the two-stop water liquids supplied by the high pressure pumps; and a water stop liquid mixing injection plug (34) for stirring and mixing the water stop liquid converged in the injection tool and injecting the water stop liquid into the leakage site of the cement base composition structure, The injection tool (10A) has a convergence head (11) capable of converging the two water stop liquids. The water stop liquid mixing injection plug (34) is built therein with a stirrer for stirring and mixing two water stop liquids. The convergence head (11) of the injection tool is joined with the water stop liquid mixing injection plug (34) by a detachably joining means capable of leaving the water-stop liquid mixing injection plug (34) at the leakage site.

Description

Water-stopping liquid injection system, water-stopping liquid injection plug, and water-stopping method for cement-based composite structures

The invention relates to a water stopping liquid mixed injection system, a water stopping liquid mixed injection plug and a water stopping method for a cement-based composite structure. In detail, it is about mixing and injecting two kinds of water-repellent liquids into leaky spaces formed by cracks in cement-based system structures or gaps such as joints and joints, and hardening the two water-repellent liquids. A water-stopping liquid mixing injection system, a water-stopping liquid injection plug and a water-stopping method are added.

The inventor has applied for an invention patent entitled "Water-Retaining Method for Cement-Based Structures" (Patent Document 1 described later). The invention relates to a cement-based structure system structure made of mixed earth-based structures, etc. It is a method of water-stopping by injecting a two-liquid type water-stopping material into a leaky space such as a crack in a material or a gap between the joints.

The invention of this water-stopping method is a method of mixing and leaking two types of water-stopping materials of different types into the leaking spaces of the cement-based system structure. The method of hardening the water-stopping materials is to select the type. A new combination of different two-liquid type water-stopping materials. These water-stopping materials are mixed and injected into the leaking place using a special injection device to harden the water-stopping materials to perform water-stopping.

The injection device includes an A-liquid supply pump for supplying one of the two-liquid-type water-stopping materials of different types (hereinafter also referred to as "A-liquid"), and a liquid-sealing material for the other (hereinafter The B-liquid supply pump (also referred to as "B-liquid") is described above; and an injection head having a mixing section for mixing A-liquid and B-liquid supplied from these supply pumps. Liquid A is a hydrophilic urethane resin, and liquid B is an aqueous polymer emulsion. These liquids A and B are hardened by mixing to form a water-proof material.

An outline of the injection device described in Patent Document 1 described later will be described with reference to FIG. 14. 14 shows a conventional injection device; FIG. 14A is a schematic view of the injection device; and FIG. 14B is a partial cross-sectional view of the injection head.

The injection device 1 includes two tanks 2 and 2 that respectively store liquids A and B; a high-pressure pump for supplying liquid A and high-pressure pumps 3 and 3 for supplying liquid B, which are connected to the two tanks 2 and 2; The head 5 mixes the liquids A and B supplied by the high-pressure pumps 3 and 3 through the high-pressure pipes 4 and 4.

The injection head 5 includes: a bifurcated base 5a; a base-side cylindrical portion 5b provided integrally with the base 5a; and a front-end-side cylindrical portion 5c that is substantially coaxial with the tube 5j and is detachably provided on the base-side cylindrical部 5b。 5b.

The base portion 5a is provided with two flow paths R5a and R5a, and these flow paths R5a and R5a are respectively connected to the corresponding high-pressure pipes of the two high-pressure pipes 4, 4. In addition, these two flow paths R5a and R5a merge with one flow path R5a1 at a predetermined position in the base portion 5a, and this flow path R5a1 is connected to the in-tube flow path SP5b of the base-side tube portion 5b. This in-tube flow path SP5b is connected to the in-tube flow path SP5c in which the front-end side tube part 5c of the agitator 6 is incorporated.

The main body of the agitator 6 includes a shaft portion which is accommodated in the in-tube flow path SP5c substantially coaxially with the front end side barrel portion 5c, and a rib portion which protrudes in a spiral shape from an outer peripheral surface of the shaft portion. . The liquids A and B are stirred and mixed by the spiral ribs as they pass through the flow path SP5c in the cylinder.

As a result of the injection device 1, the A liquid and the B liquid pressure-fed from the two high-pressure pumps 3 and 3 converge in the base portion 5a in the injection head 5 and pass through the base-side cylinder portion 5b and pass through the front-end-side cylinder portion 5c. At this time, the A liquid and the B liquid are stirred and mixed by the agitator 6 and are discharged from the discharge port 5h of the front-end-side cylindrical portion 5c in this mixed state. In addition, the magnitude of the discharge pressure of the two high-pressure pumps 3 and 3 is appropriately selected from a range of greater than 0 MPa and less than or equal to 50 MPa according to the width or depth of the crack to be injected, and from the viewpoint of reliably injecting the deep part of the crack Look at the selection from the range of 10 MPa or more and 50 MPa or less.

According to this invention, the A liquid and the B liquid are mixed in the flow path in the injection head. At this time, the water required for the water-foaming and foaming reaction of the liquid A is supplied from the liquid B. On the other hand, by this supply, the liquid B is dehydrated and the liquid B is hardened. Therefore, without injecting water into the leaky place in advance as in the prior art, the foaming and hardening of the B liquid can be surely caused, and the time required for the hardening of the B liquid in the leaky space can be shortened. In addition, the A liquid and the B liquid are injected into a leaky place while being mixed in a flow path communicating with the discharge port. Therefore, when the fluidity of the mixture of liquid A and liquid B is still high, the mixture can be injected into the leaky space. This makes it possible to smoothly and reliably inject the water stopper into the deep part of the leaky space.

According to this water stopping method, the above-mentioned excellent effects can be achieved, and water can be efficiently and effectively stopped in a short time. However, in the injection device of this method, several improvement points were found (hereinafter also referred to as problems).

As one of the improvement points (question 1), it can be mentioned that the liquid A will start to harden immediately after confluence and mixing from liquid A to liquid B, so that the hardened substance adheres to the inner wall of the tube, or the hardened block blocks the tube, which may cause The injection device is faulty; in addition, the removal of these hardened materials or hardened blocks or the cleaning of the tube is complicated and time-consuming, which hinders the water stop operation. That is, the A liquid and the B liquid converge in the base portion 5a in the injection head 5, and when the A liquid and the B liquid pass through the base side tube portion 5b and pass through the front side tube portion 5c, they are stirred and mixed by the agitator 6, and In this mixed state, it is discharged from the discharge port 5h of the front-end-side cylindrical portion 5c. In these flow paths, when hardened materials adhere to the inner wall of the base 5a and the base-side cylindrical portion 5b, or these spaces are blocked by hardened blocks, the base 5a and the base-side cylindrical portion 5b are bent at right angles, and the hardened materials in the tube Removal and cleaning are extremely difficult, complicated and time consuming. On the other hand, if the front-end-side tubular portion 5c is also blocked, the removal and cleaning of the hardened material cannot be performed without separating or disassembling the tubular portion, and the removal and cleaning of the hardened material is more complicated, more difficult, and laborious.

In addition, as another improvement point (question 2), there may be cases where the injection device is suspended due to an operator's rest, etc., or the injection device is stopped for a predetermined period or period of time due to the end of the operation or the device is stopped. If the flow path is blocked due to hardened materials during the period, removal of hardened materials and cleaning will be more difficult, which will hinder the resumption of work. That is, when the suspension or rest period reaches a long time or a long period, the hardened material sticks to the inner wall of the tube, and since the hardened block blocks the tube hard, the hardened object and hardened block cannot be removed by a simple operation. In addition, if the removal is incomplete, it will hinder the operation of the injection device. Not only that, if the injection device is forced to run, the parts of the device may be damaged or even damaged. In the worst case, the entire device may be damaged.

Regarding these problems, in response to the above-mentioned problem 1, proposals have been made for a method for preventing the flow path from being blocked. The water-stopping method described in the following Patent Document 1 is a method for retarding the hardening by using a material having a slower hardening type as a liquid A, that is, a hydrophilic urethane resin.

In addition, the two-liquid mixing device described in the following Patent Document 2 introduces only a certain amount of the first liquid, which is a non-hardening liquid, into the mixing mechanism after the completion of the water-stopping operation, and mixes the mixed liquid in the mixing mechanism. By discharging to the outside from the nozzle, only the first liquid remaining as a non-hardening liquid remains in the mixing mechanism, and the disadvantages caused by the solidification of the mixed liquid can be prevented.

<Prior Art Document> <Patent Document> <Patent Document 1> Japanese Patent Laid-Open No. 2014-181486 [Patent Document 2] Japanese Patent Laid-Open No. 2010-022908 [Patent Document 3] Japanese Patent No. 5300162 [Patent Document 4] > Japanese Patent Laid-Open No. 2007-038060 (Patent Document 5) Japanese Patent Laid-Open No. 2008-240424 [Patent Document 6] Japanese Patent Laid-Open No. 2003-321939 [Patent Document 7] Japanese Patent Laid-Open No. 2001-012084

<Technical Problems to be Solved by the Invention> The blocking prevention measures described in Patent Document 1 mentioned above are used as a solution A (hydrophilic urethane resin) that uses a delayed hardening resin to delay hardening. Therefore, Resin is limited to a specific material, and it takes time to stop water. In addition, the blocking prevention countermeasure described in the above-mentioned Patent Document 2 introduces a non-hardening liquid after the completion of the water-stopping operation to discharge the mixed liquid in the mixing mechanism from the nozzle to the outside. Therefore, the introduction of the non-hardening liquid must be introduced. Since the port is formed at a position higher than the inflow port of the hardening liquid, the device becomes complicated. In addition, if the hardening liquid cannot be completely discharged from the mixing mechanism and remains, the clogging cannot be prevented. For these reasons, these preventive measures are only effective for the suspension of work, and cannot be used in other periods such as the rest period of the work (Question 2 above).

However, the two-liquid mixed injection method does not rely on external factors for the hardening reaction compared to the one-liquid injection method (the operation of injecting water into the injection hole is not required in advance), so it has stable quality and can reliably generate hardening. Advantages of waterstops. However, on the other hand, the two liquids (equivalent to the above-mentioned liquids A and B) flow from the confluence to the mixing, and immediately begin to harden, which has the disadvantage that the device is easily blocked by the hardened material.

In view of this disadvantage, the injection device used in the conventional two-liquid mixed injection method has been gradually designed and commercialized based on the idea of "a structure that is difficult to cause clogging." It can be said that each of the devices described in Patent Documents 1 and 2 and Patent Documents 3 to 5 was developed based on this concept. Because each device is a two-liquid mixing and two-liquid stirring for an integrated structure. However, at the work site, the blockage caused by hardened materials will occur in various time series, appearances, and places. The removal of this hardened material and the cleaning of the tube will take a lot of time and effort, so it is very much expected to improve Maintainability.

Therefore, in response to this expectation, the present inventors investigated the cause of clogging and found the following situation: Although the conventional injection devices are based on the concept of "a structure where clogging is difficult to occur", the two-fluid confluence unit and the agitator are stirred. The mixing section has an integrated structure, but clogging occurs more frequently in the stirring mixing section than in the mixing section, and if the clogging occurs in the stirring mixing section, the removal and cleaning of hardened materials is more troublesome and difficult.

Based on the above-mentioned findings, the present inventors conceived the following technical ideas and completed the present invention. That is, the two-liquid mixing section and the stirring mixing section are separated, and the stirring and mixing section that often suffers from blockage uses a disposable structure that requires no maintenance (using so-called consumables), and requires removal and cleaning operations. Only the mixing section is left, which can reduce a considerable workload. On the other hand, changing the concept, abandoning the "structure that is difficult to cause blockage" and adopting a design that "is based on the occurrence of blockage". If it is set to "a structure that is easy to remove and clean hardened materials after blockage occurs", maintenance can be improved And stable quality, and real and immediate results.

Moreover, although the stopper injection plugs are well-known in the above-mentioned patent documents 6,7, these injection plugs are those who inject the stopper liquid into the injection holes, and do not have the functions of stirring and mixing. .

Therefore, an object of the present invention is to provide a water-stopping liquid mixing injection system used in a two-liquid mixing injection method, which can reduce the situation in which hardened materials clog parts such as an injection tool constituting the mixed injection system, and even if they are Hardened blockage can also be easily removed and cleaned, which improves maintenance.

In addition, another object of the present invention is to provide a water-stopping liquid injection system which, with a simple configuration, prevents the water-stopping liquid from hardening and blocking the hardened material from forming a stoppage when the injection operation is suspended, ended, or during a rest period. Water-liquid mixing injection system parts.

In addition, another object of the present invention is to provide the so-called consumables that are used up after the components for stirring and mixing the water-stopping liquid are used up, so as to provide a water-stopping liquid-injecting plug that does not require maintenance of the component.

In addition, another object of the present invention is to provide a water-stopping method for a cement-based composite structure. Even if a hardened substance blocks parts constituting a water-stopping liquid injection system during a water-stopping operation, removal, cleaning, and maintenance can be performed. The job becomes lighter and takes less time to perform the entire water stop quickly and efficiently.

<Technical Solution to Solve the Problem> In order to achieve the above-mentioned object, the first aspect of the present invention is a water-stopping liquid injection system including: 2 tanks, each of which holds two kinds of water-stopping liquid of different types; a high-pressure pump, Connected to each of the foregoing tanks and supplying the two kinds of water-stopping liquids respectively; Injector, which merges and injects the two kinds of water-stopping liquids supplied by the high-pressure pump; The water-stopping liquid is mixed into the plug, stirred, and mixed in the injection device The water-stopping liquid of the middle confluence is injected into the leaking place of the cement-based composition structure, and the injection device has a header for converging the two water-stopping liquids. The water-stopping liquid is injected into the plug, and the mixing and mixing are hidden in the plug. The agitator of the two kinds of water-stopping liquids is combined with the water-stopping liquid injecting plugs by a joining means which can separate the water-stopping liquid injecting plugs into the water leaking place and separate the joining head of the injection device.

In the second aspect of the water-stopping liquid injection system, in the first aspect of the water-stopping liquid injection system, each of the high-pressure pumps connected to each of the tanks is connected to a power source, and each of the high-pressure pumps is connected. The piston diameters are the same or different from each other.

The third aspect of the water-stopping liquid mixing and injection system is the first or second aspect of the water-stopping liquid mixing and injection system. The aforementioned joining means is composed of the following components: a plug chuck, which is provided at the aforementioned confluence. A head; and an adapter with a check valve, which is installed at the injection port of the water-injection mixture injection plug.

The fourth aspect of the water-stopping liquid mixing and injection system is in the third aspect of the water-stopping liquid injection system. The above-mentioned header is composed of the following components: a head body for the two types of water-stopping liquids to converge; And a chuck mounting body to which the plug chuck is fixed, and the head body has the following members: a first joint portion and a second joint portion, each of which is connected to each of the high-pressure pumps; and a bus portion, which is located away from the first joint portion. And the second joint portion, in the head body, the first joint portion and the second joint portion and the confluence portion are communicated with each other through a through hole to form a first flow path and a second flow path, and the chuck mounting body has The head hole and the chuck mounting body are connected to each other at the confluence place of the two kinds of water-stopping liquids by a fixing means capable of being separated from each other through a flow hole opposed to the flow-through portion and flowing through the flow-through liquid.

The fifth aspect of the water-stopping liquid mixing and injection system is the fourth aspect of the water-stopping liquid mixing and injection system. The head body is provided with injection screw joints that are in communication with the first flow path and the second flow path. The first flow path and the second flow path are filled with a non-hardened material from each of the injection screw joints.

The sixth aspect of the water-stopping liquid mixing and injection system is the water-stopping liquid injecting system of any one of the first to fifth aspects, wherein the injection device is connected to the manifold through a connecting member with a check valve. And each of the aforementioned high pressure pumps.

The seventh aspect of the water-stopping liquid mixing and injection system is the water-stopping liquid injecting system of any one of the first to sixth aspects. One of the two types of water-stopping liquids is pre-polymerized with urethane. The other is an aqueous emulsion, which is composed of water, a resin solid component having a molecular structure having a hydroxyl group, and an anionic surfactant.

The eighth aspect of the water-injection mixed injection plug includes a plug body formed of a cylindrical body having a predetermined length and shape with a hollow hole of a predetermined size formed in the central axis direction of the length direction. The plug body has As one end of the injection port and as the other end of the discharge port, an adapter is detachably attached to the water stopper injection tool, and a stirrer is accommodated in the hollow hole.

In the ninth aspect of the water-stopping liquid mixed injection plug, in the eighth aspect of the water-stopping liquid mixed injection plug, a check valve is installed at any one of the injection port and the discharge port of the plug body. The check valve of the injection port can be used as the adapter.

The tenth aspect of the stopper mixture injection plug is in the eighth or ninth aspect of the stopper mixture injection plug. The plug body is separated into a mixture and an ejection body, and the mixture is inside A hollow hole having a size for inserting the agitator is formed, the ejection body has a hollow hole through which the water-repellent liquid flows, and an end portion serving as the ejection outlet, the mixture and the ejection body are in the hollow of the mixture. A stirrer is housed in the hole, and is joined together by a removable joining means.

The water injection mixture of the eleventh aspect is mixed into the plug, and the water injection mixture of any of the eighth to tenth aspects is injected into the plug. The agitator is a static agitator.

The twelfth aspect of the present invention includes a cement-based composite structure hydrostatic method including the following steps (a) to (d), (a) a perforation step, cracking of the cement-based composite structure, and the like. The leaking place is provided with injection holes of a predetermined size and depth; (b) the plug insertion and fixing step, which includes a stirrer built-in and stirs and mixes the two water-proof liquids according to any one of claims 8 to 11 The water-stopping liquid mixing injection plug described above is inserted and fixed in the injection hole; (c) a water-stopping liquid injection step, which joins the injection device that merges the two water-stopping liquids and injects the liquid-sucking liquid into the water-stopping liquid and injects Plug the plug, and mix the plug with the water-stopping liquid, mix the plug, mix the liquid, and inject the liquid into the leaky space; (d) disassemble the injection device. After the step (c), place the water-stop liquid The mixing injection plug is detached from the water injection liquid mixing injection plug and the injection tool is left in the injection hole.

In the thirteenth aspect of the cementitious composition structure, the hydraulic method of the twelfth aspect of the cementitious structure structure, the water-stopping liquid in the step (b) is mixed into the plug, The stopper is mixed and injected using the water-repellent liquid as described in any one of claims 8 to 11, and has a repairing step. After the step (d), the ejection body is left in the injection hole and removed, and The mixture is pulled out, and the opening of the injection hole after the pull-out is filled with a repairing material to perform repair.

<Effects of the Invention> According to the first aspect of the present invention, the water-stopping liquid mixing injection system of the present invention, the header of the injection device is joined by a separable joining means when the water-stopping liquid is mixed into the plug and left in the leaking place. Mix the stopper with the plug. Therefore, even if the blocking caused by the hardened material occurs when the two kinds of water stopping liquid are mixed, it is not necessary to remove and clean the hardened material by inserting the water stopping liquid into the plug. Since only the hardened material is removed and cleaned from the injection tool, maintenance work for removing the hardened material and cleaning can be greatly reduced.

With the second aspect of the water-stopping liquid injection system, each high-pressure pump is connected to a power source, so it can be made compact and compact. In addition, since the pistons of the high-pressure pumps have the same diameter or different diameters, the amount of water-stopping liquid discharged can be adjusted.

According to the third aspect of the water-stopping liquid mixing injection system, the joining means is composed of a plug chuck provided on the manifold and a joint with a check valve attached to the injection port of the water-stopping liquid injection plug. Since the engaging tool has both a function of engaging with the chuck and a function of preventing backflow, the structure can be simplified.

According to the fourth aspect of the water-stopping liquid injection system, the injection tool is composed of a head body for converging the two water-stopping liquids and a chuck mounting body to which the plug chuck is fixed, and the head body and the chuck mounting body are in the The confluence place of the two kinds of water-stopping liquids is joined together by detachable fixing means, so when the injection device is blocked, the disintegration can be easily separated to remove the hardened material and clean the injection device.

According to the fifth aspect of the water-stopping liquid injection system, filling the first and second flow paths from the injection screw joint with non-hardened materials during the pause, end, or rest period of the injection operation can be easily performed. It is constituted to prevent the mixed liquid from hardening and blocking the flow path.

With the 6th aspect of the water-stopping liquid injection system, the injection device is connected to each other by a connection member with a check valve interposed between the manifold and each high-pressure pump, so that the two water-stopping liquids can be prevented from flowing in countercurrent. High-pressure pump side.

With the 7th aspect of the water-stopping liquid injection system, one of the two water-stopping liquids is a liquid urethane prepolymer and the other is an aqueous emulsion. The aqueous emulsion is composed of water and molecular structure and has hydroxyl groups. It consists of solid resin content and anionic surfactant. Thereby, the two kinds of water-repellent liquids react to form a hardened material that is difficult to decompose, and the water-repellent effect can be quickly exhibited, and the stable water-repellent effect can be continuously exerted for a longer period.

With the eighth aspect of the stopper mixed injection plug, when the stopper mixed injection plug and the stopper injection device connected to the stopper and injected the stopper are blocked by the stopper hardened, Removal of the hardened material and maintenance such as cleaning become easy or even unnecessary. That is, firstly, since the stopper for the mixed injection of the water stopper and the water stopper for the water stopper are joined by a dismountable joining means, when the hardened part is blocked, the two can be separated to remove the hardened part and even the parts. Clean up. In addition, since the plug body contains a stirrer, as long as the stirrer is used for stirring and mixing, it is not necessary to make the water stopper injection device have a mixing function, as long as it has a confluence function. In addition, since the stopper mixture injection plug can be set as a consumable, maintenance is not required.

According to the ninth aspect of the present invention, the water-stopping liquid mixing injection plug has a coupling device with a check valve installed at the injection port. Function and backflow prevention function make the structure simple.

With the tenth aspect of the water-proof liquid mixed injection plug, since the plug body is separated into a mixed body and an ejection body, the functions are shared by each other, making the installation and combination of accessories easy.

With the 11th aspect of the water-stopping liquid injecting the plug, a static stirrer can be used as a stirrer to stir and mix the two water-stopping liquids inexpensively and efficiently.

According to the twelfth aspect of the cement-based composition structure of the present invention, even if the hardened material blocks the water-stop liquid injection device or the injection tool, the hardened material is removed and the water-stop liquid injection device and the injection tool are cleaned. Maintenance work becomes lighter, shortening the required work time, and performing the entire water stop work quickly and efficiently.

By virtue of the 13th aspect of the cement-based composite structure structure, only the part (that is, the discharge body) of the water-proof liquid mixed into the plug is left in the injection hole, which is more internal than the cement-based composite structure. Because it is filled with a hardened liquid, it does not leak water.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments shown below are merely for the purpose of exemplifying a water-stopping liquid mixing injection system for concretely embodying the technical idea of the present invention, a water-stopping liquid mixing injection plug, and a water-stopping hydraulic method of a cement-based composite structure. It is to limit the present invention, and other embodiments included in the scope of the patent application can be equally applied.

The outline of the water-stop liquid mixing injection system according to the embodiment of the present invention will be described with reference to FIG. 1. FIG. 1 is a plan view of a water-stop liquid mixing and injection system according to an embodiment of the present invention.

The water stopping liquid mixing and injection system 10 according to the embodiment of the present invention includes two tanks T ₁ and T ₂ that respectively store two different types of liquid C and D (hereinafter also referred to as two liquids or water stopping liquids). High-pressure pumps P ₁ and P ₂ connected to these tanks; an injection device 10A that combines and injects the C liquid and D liquid supplied from the high-pressure pump through the high-pressure pipes H ₁ and H ₂ ; and stirs and mixes from the injection device The confluent fluid is injected into the leakage plug and the stop water of the repaired space is mixed into the plug (hereinafter also referred to as the injection plug) 34. The water-stopping liquid injection system 10 is a water-stopping liquid injection system used in a so-called two-liquid mixed injection method. One of the liquid C and the liquid D is an urethane prepolymer, and the other is an aqueous emulsion. A hardened water-proof material is produced by mixing these solutions. In addition, it is preferable that the high-pressure pumps P ₁ and P ₂ are connected to a single power source (motor) and run, thereby simplifying the structure near the pump.

The injection device 10A is configured to be joined with the water-stopping liquid mixing injection plug 34 when the water-stopping liquid is injected, and is stirred with a stirrer in the injection plug, and the water-stopping liquid is mixed, and the leakage and repair spaces are injected. The water-liquid mixture is injected into the plug 34 and left in the repaired place to separate. According to this configuration, the injection tool is engaged with the injection plug at the time of injection, stirs and mixes the C liquid and D liquid with a stirrer, and injects it into the leaky and repaired place. After the injection, the injection plug is left in this repaired place and separated. Therefore, even if the device is blocked due to the hardened material when the two liquids are mixed, only the hardened material on the injection tool side needs to be removed and cleaned, and the corresponding injection plug is not required to be removed and cleaned, so the hardened material can be greatly reduced. Removal and cleaning maintenance work.

Hereinafter, each component constituting the water-stopping liquid mixing injection system 10 will be described. Water-stopping liquid injection system 10 is provided with two tanks T ₁ and T ₂ , two high-pressure pumps P ₁ and P ₂ , and an injection device 10A, which is connected with the water-stopping liquid each time the water-stopping liquid is injected. The hybrid injection plug 34 is engaged. Among these, the two tanks T ₁ , T ₂ have a capacity of, for example, 20 to 30 liters, and are made of a metal material or a synthetic resin material. In addition, each of the high-pressure pumps P ₁ and P ₂ uses, for example, a maximum discharge pressure of 700 kg / cm ² and a discharge pressure of about 100 kg / cm ² during injection. These pumps are connected to a power source (100 V) and controlled by a controller. . Moreover, it is preferable that two high-pressure pumps P ₁ and P ₂ use two pistons and operate with one power source.

In addition, since each high-pressure pump is operated by one power source, when it is necessary to adjust the discharge amount of the C liquid and the D liquid, a person who changes the piston diameter of each high-pressure pump is used for adjustment. The piston diameter can be easily changed without using a complicated control device and the like in the prior art to adjust the discharge amount. This water-stopping liquid injection system 10 has characteristics such as small size, simplicity, and excellent workability in a narrow place. These characteristics will become clearer from the following description.

Next, the injector 10A will be described with reference to FIGS. 4 and 5. Moreover, FIG. 4 shows the head body; FIG. 4A is a plan view. 4B is a lateral side view of FIG. 4A; FIG. 4C is a side view of the right side of FIG. 4B; FIG. 4D is a side view of the left side of FIG. 4B; and FIG. 5 is an enlarged cross-sectional view taken along the line VC of FIG. 4D.

This injection device 10A includes a bus head 11 and accessory parts 16 to 33. The bus head 11 is composed of a head body 12 and a collet mounting body 15. The head body 12 includes a head piece portion 12A, which is made upright at a predetermined height and made of a thick plate-like body when placed on a mounting surface, and a crotch piece portion 12B from which The head piece 12A extends approximately horizontally at a substantially center and is formed of a thick plate-like body. The head piece portion 12A and the cymbal piece portion 12B are formed by a side body (see FIG. 4B) that is viewed as a substantially horizontal T shape, and are made of a metal material or a hard synthetic resin material. These dimensions are arbitrary, but for example, the thickness of the head portion 12A is 15 mm and the height is 54 mm; the thickness of the crotch portion 12B is 24 mm and the length is 54 mm.

In the head piece portion 12A, the front wall surface 12a, that is, the front surface with respect to the crotch piece portion 12B is flat. As shown in FIG. 4D, a substantially central portion of the flat front wall surface 12a is formed with a two-fluid confluence hole 12 ₀ . A ring-shaped groove 12 _{1 is} formed around the bus hole. A plurality of (4) screw holes 12 ₂ are formed on the outer periphery of this annular groove. Each screw hole 12 ₂ is a hole having a predetermined diameter and depth, and a female screw is engraved on an inner peripheral wall thereof. In these screw holes, bolts 17 (see FIG. 3) inserted into the chuck mounting body 15 are screwed. In addition, the hole ₁₂₀ of the bus is described later two channels 13a, 13b of the bus portion of the bus to each other (see FIG. 5). The bus hole ₁₂₀ is preferably larger than the diameter of the through hole constituting the flow path. By increasing convergence hole _120, the flow path can be cleaned easily.

In addition, the cymbal portion 12B includes a lower wall surface 12b and an upper wall surface 12c of a predetermined size, side wall surfaces to the left and right of the lower upper wall surface, and a rear wall surface 12d (see FIG. 4A). At both ends of the rear wall surface 12d, two joints 12 ₃ and 12 _{4 are formed} (refer to FIG. 4C), and the two joints 12 ₃ and 12 ₄ are connected to a connection member with a check valve (with a backflow prevention valve attached). The connecting pieces) 23A and 23B (see FIG. 3) are joined, and a recessed U-shaped groove is formed on the rear wall surface between them. In addition, the two joints 12 ₃ and 12 ₄ are labeled as the first and second joints in the scope of the patent application, and are also referred to below as the first and second joints.

The first and second joints 12 ₃ and 12 ₄ are each composed of a threaded hole with a female thread engraved on the inner peripheral wall, and the threaded hole has a predetermined connection for connecting members 23A and 23B with a check valve. Diameter and depth, and openings are formed in the depths of these threaded holes (not shown). In addition, each of the joint portions 12 ₃ and 12 ₄ is connected to the connecting member with a check valve using a diameter conversion member, such as a reducer screw joint.

The openings of the respective screw holes of the first and second joint portions 12 ₃ and 12 ₄ and the bus hole 12 _{0 of the} front wall surface 12 a are respectively inserted through the through holes that linearly penetrate the transverse T-shaped block. The holes form two flow paths 13a and 13b (see FIG. 5). In addition, the two flow paths 13a and 13b are marked as the first and second flow paths in the patent application scope, and are also referred to as the first and second flow paths hereinafter.

First and second flow paths 13a, 13b, as illustrated in FIG 5, from the bus toward the first hole _120, the second joint portion _{123, 124} become substantially V-shaped. Through this V-shaped flow path, when the fluid flows from the first and second joints, it will flow into the collecting hole in a concentrated manner, and converges here efficiently. In addition, since each flow path (through-hole) is linear, the fluid resistance is lower than that of a bender. Further, the through peep holes ₁₂₀ (flow path) from the bus inside the hole, since the hole wall when the cured product is adhered, can be easily found in the attached condition, it can simply be removed and cleaned. In addition, when the through-hole is blocked by the hardened block, it can be easily found and easily removed and cleaned. Although the size is arbitrary, for example, the V-shaped angle is 60 °; the length of each flow path (through-hole) is 55 mm; and the diameter of each through-hole is 7.0 mm.

As described above, the first and second flow paths 13a and 13b are formed by short, long, and straight through holes. Therefore, the conditions inside the holes can be easily observed, and the hardened materials and hardened blocks adhered can be easily removed. Clean up. In addition, the bus holes 12 ₀ of the front wall surface 12 a and the vicinity of the bus holes 12 ₀ are liable to be blocked due to hardened materials and become dirty. Removal of obstructions and cleaning of joints can greatly improve maintainability.

In addition, as shown in FIG. 4A, the upper wall surface 12c of the cymbal portion 12B is provided with thread holes 12 ₅ and 12 _{6 of} predetermined sizes at locations close to the first and second joint portions 12 ₃ and 12 ₄ . These threaded holes communicate with each of the through holes constituting the first and second flow paths 13a, 13b. Each of these screw holes 12 ₅ and 12 ₆ is fitted with a grease screw joint 14 (see FIG. 3). A check valve is built in these grease nipples 14 so that grease is injected from the outside, and the liquid flowing in each flow path does not flow out. Moreover, this threaded joint is already well known and uses universal products, so detailed description is omitted.

Each of the grease nipples 14 is engaged with a grease injector (not shown), and the first and second flow paths 13a and 13b are filled with grease. By filling the first and second flow paths 13a, 13b with grease, the liquid remaining in each flow path is replaced with grease, so that each flow path is not blocked by hardened materials. This grease is filled when the device is stopped for a long period of time. Thereby, the device can be prevented from being blocked and can be restarted without hindrance.

The blocking prevention of this device is extremely simple and cheap because it does not require modification of the device and can be achieved by installing a grease screw joint on the header. In addition, the filler is not limited to grease, as long as it is a non-hardening material, for example, oil may be used.

Next, a collet mounting body will be described with reference to FIG. 6. 6 shows a collet mounting body; FIG. 6A is a lateral side view; FIG. 6B is a right side view of FIG. 6A; and FIG. 6C is a left side view of FIG. 6A.

The chuck mounting body 15 includes substantially square front and rear wall surfaces 15a and 15b, and outer peripheral wall surfaces 15c to 15f. The chuck mounting body 15 is formed as a cuboid with a predetermined thickness, and is made of a metal material or a hard synthetic resin material. The size is arbitrary, but for example, the length of the front and rear wall surfaces is 54 mm, and the thickness is 15 mm. In addition, the chuck mounting body 15 and the front wall surface 12a of the head piece portion 12A have the same size.

A flow hole 15 ₀ is formed in the center of the front wall surface 15 a, and a plurality of bolt insertion holes 15 ₂ are formed around the flow hole 15 ₀ (see FIG. 6C). . Further, in the central portion of the rear wall 15b, is inserted through the aperture formed with a flow hole ₁₅₀ is _151. A filler receiving groove 15 _{3 is} formed in the periphery of this opening, and an opening 15 _{4 of} a bolt insertion hole 15 ₂ is formed in the periphery of this receiving groove. The diameter of the passage hole ₁₅₀ is set larger than the aperture _151, the flow from the inlet aperture ₁₅₀ toward the depths of the inner wall is provided with a female screw cut, and the diameter conversion part 18 (see FIG. 3) and the circulation hole ₁₅₀ and ₁₅₁ engage the apertures. In addition, the bolt insertion hole 15 ₂ is preferably formed in a shape and a size in which the bolt head can be inserted. It is preferable to use a hexagon socket bolt 17 (see FIG. 3) as the bolt.

The chuck mounting body 15 is screw-fixed to the head body 12 by four hexagon socket bolts 17. Due to this fixing, the two parts can be separated, and when the hardened material is blocked, it can be easily separated and disassembled, and the hardened material can be removed and the parts can be cleaned. In addition, since this separation space is a confluence place of two kinds of water-proof liquid, it is easy to be blocked and soiled by hardened materials.

Next, a connecting member with a check valve will be described with reference to FIGS. 7 and 8. Moreover, FIG. 7 shows the internal valve mechanism as a visible attachment with a check valve; FIG. 7A is a side view illustrating the flow of the water-stopping liquid at normal time and during reverse flow; and FIG. 7B is a view illustrating the injection of the water-stopping liquid Side view. Fig. 8 shows a cylindrical housing with a check valve attachment in Fig. 7; Fig. 8A is a lateral side view; Fig. 8B is a right side view of Fig. 8A; and Fig. 8C is a left side view of Fig. 8A. In addition, since the connecting pieces 23A and 23B with a check valve have the same structure, only one of the connecting pieces 23A will be used to explain the detailed structure.

As shown in FIG. 7, a connecting member 23A with a check valve includes a cylindrical housing 24 having a predetermined length, and a hollow hole 25 having a predetermined size is formed on a central axis in the longitudinal direction; and a valve mechanism 26 having Contained in this hollow hole 25. The cylindrical casing 24 has one end joint portion 24 a at one end and the other end joint portion 24 b at the other end (see FIG. 8), and is formed of a metal material or a hard resin material.

One end joint portion 24a is located at an end of the hollow hole 25 and is formed as a threaded hole having a predetermined diameter and depth. This threaded hole is screwed with one end of the reducer threaded joint 22 (see FIG. 3). The other end joint portion 24b is a protruding portion that projects the end of the cylindrical case 24 to reduce its diameter, and a male screw is engraved on the outer periphery of the protruding portion. This protruding portion is joined to the switching valve 31A (see FIG. 3).

The hollow hole 25 is composed of a small-diameter hole 25 ₁ with a diameter of φ1, a medium-diameter hole 25 ₂ with a diameter of φ2, a large-diameter hole 25 ₃ with a diameter of φ3, and a joint hole 25 ₄ with a diameter of φ4. The sizes of these diameters φ1 to φ4 are φ1 <φ2 <φ3 <φ4. As shown in FIG. 7, the middle-diameter hole 25 ₂ and the large-diameter hole 25 ₃ accommodate a circular sphere 27, an extended coil spring 28, and a stopper 29. Moreover, the inner wall of the large-diameter hole 25 ₃ is provided with a female thread.

The circular sphere 27 is made of a metal material, and its diameter is smaller than φ2 and becomes the size of the blocking hole φ1. Moreover, this circular sphere 27 is a valve at one end of the switching small diameter hole 25 ₁ , that is, the junction between the small diameter hole 25 ₁ and the middle diameter hole 25 ₂ . In addition, the extended coil spring 28 has a diameter smaller than φ2, and presses the circular sphere 27 in such a manner that the circular sphere 27 blocks the opening of the small-diameter hole 25 ₁ by the spring force. In addition, the stopper 29 has a through hole in the center and a male thread is engraved on the outer periphery. The stopper 29 is screwed into the large-diameter hole 25 ₃ to prevent the extension coil spring 28 from being pulled out.

In addition, even if the stopper 29 is engaged with the large-diameter hole 25 ₃ , since the center is penetrated, the flow of the liquid is not hindered. The circular sphere 27, the extension coil spring 28, and the stopper 29 constitute a valve mechanism 26. Although the size of the connecting member 23A with a check valve is arbitrary, for example, the length is 100 mm, φ1 is 5.0 mm, and φ4 is 12 mm.

In this connecting piece 23A with a check valve, when two kinds of water-stopping liquid (either liquid C or liquid D) are pressure-fed by a high-pressure pump, as shown in FIG. 7B, the valve of the valve mechanism 26 is opened. The two types of water-repellent liquid are sent in the direction of the arrow (the water-repellent liquid discharge direction at the time of injection). On the other hand, when the switching valve 19 (see FIG. 3) is closed, the pressure-fed liquid will flow backward. At this time, as shown in FIG. 7A, the valve of the valve mechanism 26 is closed, and the counter-current liquid is stopped and will not be sent to the high-pressure pipe or the high-pressure pump. As a result, even if the hardened substance is contained in the countercurrent liquid, it can prevent the countercurrent from flowing to the high-pressure pump, and the failure of the device can be prevented in advance.

The other connecting piece 23B with a check valve also has the same structure as the connecting piece 23A with a check valve. Each of the connecting pieces 23B is larger than a commercially available connecting piece, and is provided so that the valve mechanism 26 can be constructed. Removal of the circular sphere 27, the extension coil spring 28, and the stopper 29. Therefore, when the hardened material is blocked, it can be easily removed and cleaned by disassembly and disassembly.

Instead of the connecting members 23A, 23B with a check valve, a known check valve may be used. These check valves can also be assembled in the header. However, if the check valve manifold is assembled, it becomes large and complicated, and in addition, disassembly, disassembly, and cleaning during blockage become laborious. Therefore, as described above, it is preferable to set the check valve to a large size and separately to the manifold.

Liquid C and liquid D, one of which is a liquid urethane prepolymer, and the other of which is an aqueous emulsion. As the urethane prepolymer, a delayed-curing urethane resin is used. When this resin is added at a concentration of 10% by weight based on the total weight of the urethane resin and tap water, the curing time is 30 minutes or more at normal temperature (20 ° C).

In addition, an aqueous emulsion is one which uses water as a dispersing medium, a resin solid component having a molecular structure (molecular formula) having a hydroxyl group (hydroxyl group) at a molecular terminal, and an anionic surfactant.

After mixing an aqueous emulsion of this composition with a urethane prepolymer, based on a chemical reaction, the isocyanate group of the urethane prepolymer and the hydroxyl group of the resin solid content of the aqueous emulsion are chemically directly combined to integrate them. As a result, a hardened material that is difficult to decompose, that is, a water stop material. This water-stop material can achieve high durability for a longer period of time. In addition, since most of the urethane prepolymer and the solid content of the resin are consumed in the above-mentioned reaction, the amount of the hardened material of the polyurethane resin formed by reacting with water individually is reduced. In addition, similarly, the amount of hardened resin solids formed individually due to the resin solids of the aqueous emulsion being fused to each other also decreases. Therefore, the size of their interface will also become smaller, and this will effectively contribute to the improvement of the durability of the water stop material.

Furthermore, conventional aqueous emulsions can be solved with this aqueous emulsion, for example, an aqueous emulsion obtained by emulsifying an acrylic resin having no molecular structure as a resin solid component and having no hydroxyl group with an anionic or nonionic surfactant in water. Or the aqueous emulsion obtained by emulsifying water-containing acrylic resin and petroleum resin having no molecular structure in the molecular structure as a solid component of the resin with polyvinyl alcohol as a surfactant, for example, a hardened water-proof material cannot be changed. Problems such as obtaining a stable water-stop effect for a long period of time, and difficulty in quickly obtaining a water-stop effect.

The weight average molecular weight of the resin solid content of the aqueous emulsion is preferably greater than 1,000, and more preferably greater than or equal to 100,000. Thereby, a more stable hardened | cured material (waterproof material) can be produced. In addition, in order to smoothly perform a crosslinking reaction (polymerization reaction), the weight average molecular weight of the solid content of the resin is preferably 2 million or less, and more preferably 1.5 million or less.

The hydroxyl value of the resin solid content is in the range of 1 to 100, and preferably in the range of 20 to 80. If the hydroxyl value is in this range, the solid content of the resin has many hydroxyl groups. Therefore, the hydroxyl group can be chemically bonded to the isocyanate group of the urethane prepolymer quickly and integrated, thereby forming a hardened material (waterstop) that is difficult to decompose. The compounding ratio of the aqueous emulsion and the urethane prepolymer is selected in a range of 100: 21 to 100: 100 by weight. The liquids C and D are not limited to the above-mentioned urethane prepolymers and aqueous emulsions, and other types may be used.

Here, with reference to FIG. 3, assembly of the accessory parts of the injection tool 10A and the water injection liquid mixing injection system will be described. Moreover, FIG. 3 is a disassembled top view of the injector of FIG. 2.

In addition to the two connecting members 23A and 23B with a check valve, a plurality of accessory parts are attached to the injector 10A. First, the head body 12 is equipped with two grease screw joints 14, two diameter conversion parts (connectors) 22, hex nuts 30, and two switching valves with handles (hereinafter referred to as switching valves. This switching valve Also called high pressure cocks) 31A, 31B and high pressure pipe joint 33. In addition, the chuck mounting body 15 is mounted with a ring-shaped packing 16, an Allen bolt 17, two diameter conversion parts (joints) 18, 20, a switching valve 19, and a plug chuck 21. In addition, this plug chuck and a threaded joint with a check valve attached to the injection port of the water stop liquid mixed injection plug described later constitute a joint capable of separating the water stop liquid mixed injection plug and leaving it in a leaky place. means.

These parts, that is, grease threaded joints, diameter conversion parts (joints), hex nuts, switching valves, high-pressure pipe joining metal tools, and ring packings, hex bolts, chucks are well-known universal products, so they are omitted. Detailed explanation. Among the three switching valves, the switching valves 31A and 31B are used to stop the work, and the switching valve 19 is used for injection. Moreover, these switching valves are internal valves that are opened and closed by turning the handle.

The assembly of the water-stopping liquid injection system 10 is performed in the following manner. First, the injection tool 10A is assembled. This assembly is performed by screwing the hexagon socket bolt 17 between the head body 12 and the chuck mounting body 15 with the ring-shaped packing 16 interposed therebetween.

The assembled injection device 10A firstly connects the connecting members 23A and 23B with a check valve to the head body 12 through the intermediate-diameter changing member 32, and each of the hexagonal nuts 30 and 30 is connected to the switching valves 31A and 31B. The diameter conversion part 32 and the high-pressure pipe joining metal tools 33 and 33 are joined. Next, these high-pressure pipes are joined to the metal tools 33 and 33 and each of the high-pressure pumps P ₁ and P ₂ , and they are connected by high-pressure pipes H ₁ and H _2, respectively.

On the other hand, the chuck mounting body 15 is connected to the switching valve 19 via the diameter conversion member 18 and is joined to the plug chuck 21 via the diameter conversion member 20 to complete the assembly. The assembled water-stopping liquid injection system 10 includes all parts, namely, the injection tool 10A and the connecting pieces 23A and 23B with check valves, the switching valves 31A, 31B, 19, and the plug chuck 21, etc. The conversion parts 32 and the like are screwed together, thereby connecting and joining.

Therefore, when the water-stopping liquid mixed injection system is blocked by the hardened material, any part can be separated and disintegrated by unlocking the screwing of each part. That is, this structure has evolved from a "structure that is difficult to cause blockage" to a "structure that is premised on blockage" and "a structure that is easy to remove and clean hardened material after blockage occurs". With this structure, it is possible to improve maintainability, stable quality, and reliable and immediate effects. In addition, as will be described later, since the injection plug is used only once and is set as a so-called disposable item, the only device that needs maintenance is the injection device for confluence. Moreover, the injection device can be easily separated and disassembled as described above, so it is easy to maintain, and the maintainability of the device can be particularly improved. The water-stopping liquid injection system 10 injects the water-stopping liquid into the plug 34 as a consumable.

The injection plug will be described below with reference to FIGS. 9 and 10. Moreover, FIG. 9 is a side view of the water-stopping liquid-injection plug; FIG. 10 shows parts of the water-stopping liquid-injection plug; FIG. 10A is a side view of the plug body; and FIG. 10B is a side view of the ejection body Figure 10C is a side view of the threaded joint; Figure 10D is a perspective view of the expansion sleeve and the gasket; Figure 10E is a perspective view of the agitator.

The injection plug (abbreviation for the mixed injection plug of the water-stopping liquid) 34 is composed of a mixture 35 having an injection port at the end and a hollow hole 35 ₀ of a size for the blender 36 to be inserted therein; in the hollow hole ₃₅₀ and the hollow hole sealing fluid flow; having a discharge end of the discharge outlet 38; and accessory 37,39A, 39B, 40A, 40B formed.

Mixture 35, is a pipe having a predetermined length with a predetermined size of the hollow hole ₃₅₀ is formed by the central axis in the longitudinal direction is formed, having a hollow hole ₃₅₀ can accommodate the diameter and length of the agitator. The hybrid body 35 has a threaded joint engagement portion 35a at one end for threaded joint engagement, and a nozzle joint 35b at the other end for engagement of a discharge body. The outer shape of the hybrid 35 is circular or polygonal (hexagonal), and is made of metal Material or hard synthetic resin material. Wherein one of the threaded joint portion 35a, the inner wall of the end portion in the bore of the hollow portion ₃₅₀ is provided with a female thread engraved, one additional nozzle engaging portion 35b at the inner wall of the end portion of the hollow hole ₃₅₀ are engraved With female thread. The size is arbitrary, but for example, the length is 100 mm, the external diameter is 10 mm, and the hollow hole diameter is 5 mm.

The stirrer 36 is a spiral rod provided with spiral blades. For example, the stirrer 36 is a rod-shaped body having a shape in which a spiral guide portion rotated by 180 ° is staggered by 90 °, and is made of plastic (see FIG. 10E). This is also called a static mixer. In addition, this agitator is not limited to this spiral rod, It may have another structure, For example, it may be a rod-shaped body which has simple unevenness | corrugation.

The discharge body 38 is a cylindrical body. The cylindrical body has a hollow hole 38 _{0 of} a predetermined size in the central axis of the length, and has a crotch portion 38 ₂ bulging outward at one end thereof, and extends a predetermined length from the crotch portion. A male screw portion 38 _{1 is} engraved on the outer periphery of the cylindrical portion, and the discharge body 38 is made of a metal material or a hard synthetic resin material. The cylindrical portion is inserted with two expansion sleeves 39A and 39B, and the male screw portion 38 _{1 is} screwed with the mixed body 35. By rotating this mixture clockwise, each expansion sleeve will compress and expand, and it can be crimped to the inner wall of the injection hole 101 (see FIG. 12) to prevent the injection plug from being pulled out, achieving the so-called anchor function. The crotch portion 38 ₂ is a pull-out stopper such as an expansion sleeve. The dimensions are, for example, a length of 45 mm and a diameter of the hollow hole of 4 mm.

The accessory parts are a threaded joint 37, two expansion sleeves 39A, 39B, and two gaskets 40A, 40B. First, the threaded joint 37 has a check valve built in therein, and the housing is formed into a polygonal shape (for example, a hexagonal shape) (see FIG. 10C) so that a tool can be installed to rotate in the mixed body 35. This threaded joint 37 also has a function of engaging with a plug chuck provided at the bus head and a function of preventing backflow. This threaded joint has a built-in check valve, so long as it is an engaging tool that can be engaged with the plug chuck, it is not limited to this. Moreover, in the scope of the patent application, the threaded joint is marked as a joint. Further, the two expansion sleeves 39A and 39B are made of an elastic body having the same shape, for example, rubber, a through hole is provided in the center in the longitudinal direction, and non-slip unevenness is provided on the outer peripheral surface. The outer diameter is the same as the diameter of the pipe part. The two gaskets 40A and 40B are made of metal plates having the same shape, and a through hole is formed at the center in the longitudinal direction.

In the assembly of the water stopper mixed injection plug 34, first, the mixed body 35 and the discharge body 38 are assembled. The mixing body 35 is assembled by screw-fixing the screw joint 37 to the screw joint joint portion 35 a and inserting the static mixer 36 from the nozzle joint portion 35 b side of the other end. In addition, the assembly of the ejection body 38 is to insert the expansion sleeve 39B into the male screw portion 38 ₁ of the cylindrical body, and then insert the gasket 40B, the expansion sleeve 39A, and the gasket 40A in this order. Of the ejection body 38 to which these expansion sleeves and gaskets are attached, a part of the male screw portion 38 ₁ of the cylindrical body protrudes from these parts.

Next, the assembled mixed body 35 is connected to the ejection body 38. In this connection, the nozzle joint portion 35 b is joined to the male screw portion 38 ₁ of the cylindrical body of the discharge body 38. This connection is performed in a state where the two expansion sleeves 39A and 39B are not compressed and expanded. In the water-stopping liquid mixing injection plug 34, the water-stopping liquid is injected from the injection port, that is, the screw joint 37, is stirred and mixed with a stirrer, and is discharged from the discharge port of the discharge body 38, that is, sprayed. In addition, although the injected water-stopping liquid sometimes flows back, the check valve is built in the threaded joint, so it will not leak to the outside.

Since this injection plug is used up and discarded, maintenance is not required. That is, since the injection plug and the injection tool are joined together by a freely jointable means, when the hardened material is blocked, it is only necessary to separate the two, and only the hardened material on the injection tool side is removed or the part is cleaned. Just fine. In addition, a stirrer is stored in the plug body, and since the stirrer performs stirring and mixing, the injection device does not need to have a mixing function, and the injection device only needs to have a confluence function. In addition, the joining means is composed of a plug chuck provided on the header and a threaded joint with a check valve installed on the injection port of the water injection mixing injection plug. The threaded joint also has a joint with the chuck. The function and the backflow prevention function can simplify the structure.

A modified example of the mixed stopper for the water injection liquid will be described with reference to FIG. 11. FIG. 11 is a side view of a water injection liquid mixed injection plug according to a modification. The water-stopping liquid-injection plug 34 is not limited to the above-mentioned structure, and may be arbitrarily deformed as long as a stirrer is built in.

The water stopper mixed injection plug 34A shown in FIG. 11 is provided with a threaded joint 41 at the injection port of the mixed body 35A, a peripheral groove 42 is engraved on the injection port side, and a backflow prevention is fixed at the discharge port of the mixed body 35A. Valve 43. By injecting the plug therefrom, the same effect as that of the water-stopping liquid injection plug 34 can be achieved. In addition, by injecting the water-stopping liquid into the injection hole, the front end of the mixed body 35A is hit with a mallet, so that the front end portion is removed from the peripheral groove 42 bends. This makes it possible to prevent the entire mixing body 35 from being pulled out of the injection hole, unlike the injection stopper 34 mixed with the water-stopping liquid.

In addition, although not shown in the drawings, the following configuration may be further modified. For example, instead of being divided into a mixing body and an extruding body, only one pipe is used to form a water-stopping liquid for the injection plug. That is, the plug body includes a plug body made of a cylindrical body having a predetermined length and shape, with a hollow hole of a predetermined size formed in the central axis direction of the length direction. The plug body has one end as an injection port. And, as the other end of the discharge port, an adapter is detachably attached to the water injection liquid injection tool at the injection port, and a stirrer is accommodated in the hollow hole. At this time, a check valve is attached to either the injection port or the discharge port of the plug body. The following configuration is the same as the injection plug described above.

12 and 13, the water-stopping method of the cement-based composition structure using the water-stopping liquid injection system and the maintenance of the water-stopping liquid injection system when it is stopped will be described. Moreover, FIG. 12 is a schematic cross-sectional view of a leaking place in a mixed soil structure of a water-stopping method of a cement-based composition structure; FIG. 13 shows a step of using a water-stopping liquid injection system to stop the leaking place; FIG. 13A FIG. 13B is a schematic view of the injection stopper mixed with the water-stopping liquid injection plug; FIG. 13B is a schematic view of the injection stopper mixed with the water-stopping liquid injection plug; FIG. 13C is a schematic view of the end of the injection; FIG. 13D is disassembly A schematic view of the state of the mixture is shown.

(1) Water-stopping method of cement-based composition structures The water-stopping method of cement-based composition structures is to use a water-stopping liquid injection system and injection plugs for cement-based structure structures (also described below). A method of stopping water in a cracked leaked space (referred to as a leaked space hereinafter) called a mixed earthen structure is included in steps (a) to (e) below. (A) Perforation step An injection hole 101 of a predetermined size and depth is perforated to connect with the leaky space 100a of the mixed earth structure 100.

(B) The steps of inserting and fixing the injection plug so that the screw joint 37 protrudes from the wall surface of the structure 100, insert the water-proof liquid mixed injection plug 34 into the injection hole 101, and join a tool to the screw joint 37 (FIG. (Shown omitted). The mixing body 35 is rotated in a clockwise direction to expand the expansion sleeves 39A and 39B, and the water-stopping liquid is injected into the plug 34 to be installed and fixed in the injection hole 101. In addition, although there are one injection hole in FIG. 12A, a plurality of injection holes are still perforated, and the water stopper mixed injection plug 34 is installed and fixed in each injection hole. The plurality of injection holes are perforated at predetermined intervals, for example, at intervals of 200 mm in each of the horizontal direction and the vertical direction.

(C) The water stopper injection step is installed and fixed among the plurality of injection plugs fixed to the leaky space 100a. First, the first water stopper mixed injection plug 34 is connected to the injection stopper 10A of the water stopper mixed injection system 10. The chuck 21 is inserted, and a water-stopping liquid is injected into the injection hole 101. The component symbol ab indicates a water stop liquid. In addition, the water stop liquid is injected by activating the high pressure pumps P ₁ and P _{2 of} the water stop liquid injection system 10 and turning the handle of the switching valve 19 to open the valve. These water-stopping liquids are sent from the tanks T ₁ and T ₂ storing liquids C and D to the header 11 at a predetermined pressure, and the water-stopping liquid is injected into the plug 34 to stir and mix the water-stopping liquids. injection.

This injected mixture will harden in a short time. That is, among the liquids C and D, one of the urethane prepolymers required for the foaming and hardening of the urethane prepolymer is supplied from the aqueous emulsion, and on the other hand, the other aqueous emulsion is supplied by this. Water is consumed, and the molecular structure in the aqueous emulsion has a resin solid component having a hydroxyl group and an isocyanate group in the urethane prepolymer reacts to harden the aqueous emulsion. Therefore, it is not only the foaming hardening of the urethane prepolymer that takes place in a short time, but also the hardening of the aqueous emulsion. In addition, the high-pressure pumps P ₁ and P ₂ have a discharge force of up to 700 kg / cm ² and are injected into the injection hole with a discharge force of 100 kg / cm ² . Generally, the compressive strength of the mixed soil is 21N / mm ^{2. If the} pressure is suddenly increased too much, the mixed soil may crack, but even the cracked part will be filled with water-stopping liquid, so there is no problem.

(D) Disassembling procedure of the injection device After the injection is completed, the switching valve 19 is closed to stop the discharge of the water stopper, and the injection device 10A is removed from the water stopper mixed injection plug 34. In this disassembly, the water stopper mixed injection plug 34 is left in the injection hole 101 and separated from the threaded joint 37. Next, the water-repellent liquid is mixed into the plug 35 of the plug 34 with a tool and rotated in a counterclockwise direction opposite to that in (1) above, and the ejection body 38 is left in the injection hole 101 to remove the mixture 35. Even if the ejection body 38 is left in the injection hole, since the ejection body is a short, long and small part, and a water-proof liquid is injected into the hole to harden, no water leaks therefrom.

(E) The step of blocking the injection hole The inlet of the injection hole 101 of the mixed body 35 is removed and filled with a suitable filler (repair material) such as mortar to make it non-porous, thereby ending the first injection hole. repair. After that, the same method is used to sequentially inject a water-stopping liquid into a plurality of injection plugs installed in the leaky space to stop the leaky space.

In this series of water-stopping operations, even if the components constituting the water-stopping liquid injection system are blocked, it is not necessary to deal with the water-stopping liquid injection plug 34, and only the injection device 10A is required. In addition, the separation and disassembly of the parts of the injection device can be easily completed as described above, so that the hardened matter can be removed and cleaned quickly and easily, and the interruption of the water stopping operation can be kept to a minimum. That is, even if there is a clogging of the hardened matter in the injection tool, the maintenance work for removing the hardened matter in the injection tool and cleaning becomes slight and the working time can be shortened, and the overall water-stopping operation can be performed quickly and efficiently. In addition, there is only a part of the injection plug in the injection hole, that is, the ejection body is left, and it is located closer to the inner side than the cement-based composition structure because the hardened material filled with the water-stopping liquid does not leak.

(2) Maintenance of the water-stopping liquid injection system during work suspension, operation end, and work stoppages Although the water-stopping liquid injection system sometimes stops for a long time or even for a long period of time, such as work suspension, work end, and work stoppages In this case, each of the grease screw joints 14 of the header 11 is connected to a grease injector (not shown), and the first and second flow paths 13a, 13b are filled with grease. Since the first and second flow paths 13a and 13b are filled with grease, the remaining liquid in each flow path is replaced with grease, so each flow path is not blocked by hardened materials.

When the water-stopping liquid mixing and injection system is started again, the grease filled in each flow path is naturally pressed out by the water-stopping liquid by the start-up, and the water-stopping liquid will be successively injected, so it will not become water-stopping. obstacle. The blockage of the water-stopping liquid injection system at the time of suspension of work, completion of work, and cessation of work can be easily implemented by simple change of the injection tool.

T ₁ , T ₂ ‧‧‧ slots

P ₁ , P ₂ ‧‧‧high-pressure pump

H ₁ , H ₂ ‧‧‧ high pressure pipe

10‧‧‧ Water-proof liquid mixing injection system

10A‧‧‧Injector

11‧‧‧Confluence Head

12‧‧‧ head body

12 ₀ ‧‧‧Combination hole

12 ₃ ， 12 ₄ ‧‧‧ first and second joints

13a, 13b‧‧‧ first and second flow paths

14‧‧‧Threaded joint

15‧‧‧ Collet mounting body

21‧‧‧Plug Chuck

19, 31A, 31B‧‧‧ Switching valve

23A, 23B ‧‧‧ Connecting piece with check valve

26‧‧‧Valve mechanism

34, 34A‧‧‧ mixed stopper injection plug

35, 35A‧‧‧ Hybrid

36‧‧‧ Stirrer

37‧‧‧Joint

38‧‧‧ spit out

100‧‧‧ cement system structure

100a‧‧‧Leaky premises

101‧‧‧ injection hole

FIG. 1 is a plan view of a water-stop liquid mixing and injection system according to an embodiment of the present invention. FIG. 2 is a plan view of the injection tool of FIG. 1. FIG. 3 is a disassembled plan view of the injector of FIG. 2. Figure 4 shows the head body of Figure 2; Figure 4A is a top view; Figure 4B is a lateral side view of Figure 4A; Figure 4C is a side view of the right side of Figure 4B; and Figure 4D is a side view of the left side of Figure 4B. FIG. 5 is an enlarged cross-sectional view taken along the line VV in FIG. 4D. Fig. 6 shows the chuck mounting body of Fig. 2; Fig. 6A is a lateral side view; Fig. 6B is a right side view of Fig. 6A; and Fig. 6C is a left side view of Fig. 6A. FIG. 7 shows a connecting member with a check valve in FIG. 2; FIG. 7A is a side view illustrating the flow of the water-stopping liquid at normal time and during backflow; FIG. 7B is a side view illustrating the injection of the water-stopping liquid. FIG. 8 shows a cylindrical housing with a check valve connecting member of FIG. 7; FIG. 8A is a lateral side view; FIG. 8B is a right side view of FIG. 8A; and FIG. 8C is a left side view of FIG. 8A. FIG. 9 is a side view of the stopper mixed injection plug. Fig. 10 is a disassembled view of the water-stopping liquid mixed injection plug of Fig. 9; Fig. 10A is a side view of a cylindrical body containing a stirrer; Fig. 10B is a side view of an ejection body; Fig. 10C is a side view of a threaded joint; FIG. 10D is a perspective view of the expansion sleeve and the gasket; FIG. 10E is a perspective view of the agitator. FIG. 11 is a side view of a modified example of the water stopper mixed injection plug. FIG. 12 is a schematic cross-sectional view of a leaking place in a cement-based composition structure. FIG. 13 shows a step of using a water-stopping liquid mixing injection system to stop water in a leaky place; FIG. 13A is a schematic view of joining the injection tool with a water-stopping liquid injection plug; FIG. 13B is a water-stopping liquid injection plug FIG. 13C is a schematic diagram of a state where the injection stop is completed; FIG. 13D is a schematic diagram of a state where the plug body is removed. FIG. 14 shows a prior art injection device; FIG. 14A is a schematic view of the injection device; and FIG. 14B is a partial cross-sectional view of the injection head.

Claims (15)

A water-stopping liquid injection system, comprising: 2 tanks, each of which holds two kinds of water-stopping liquids of different types; a high-pressure pump, which is connected to each of the tanks and supplies the two kinds of water-stopping liquids respectively; The aforementioned two kinds of water-stopping liquid supplied by the pump are combined and injected; and the water-stopping liquid is mixed into the plug, stirred and mixed with the water-stopped liquid converged in the injection device, and injected into the leaking place of the cement-based composition structure, and The injection device has a combiner for converging the two water-stopping liquids. The water-stopping liquid mixing injection plug contains a stirrer for mixing and mixing the two water-stopping liquids. The joining means for separating the water-injection liquid mixed injection plug and leaving it in the leaky place is joined with the water-injection liquid mixed injection plug. The water-stopping liquid injection system according to claim 1, wherein each of the high-pressure pumps connected to each of the tanks is connected to a power source, and the piston diameters of the high-pressure pumps are the same or different from each other. The water-stopping liquid mixing and injection system according to claim 1 or 2, wherein: the aforementioned joining means is composed of the following components: a plug plug chuck provided at the above-mentioned manifold; and a joint with a check valve installed to install At the injection port of the plug, the water-stopping liquid is mixed and injected. The water-stopping liquid mixing and injection system according to claim 3, wherein: (1) The above-mentioned collecting head is composed of the following components: (1) the head body for the two kinds of water-holding liquids converging; and a chuck mounting body to which the above-mentioned plug clamp is fixed. The head, the head body has the following components: a first joint portion and a second joint portion, each of which is connected to each of the high-pressure pumps; and a confluence portion, which is located away from the first joint portion and the second joint portion, in the head body Wherein the first joint portion, the second joint portion, and the confluence portion are communicated with each other through a through hole to form a first flow path and a second flow path, and the chuck mounting body has a flow of a confluent liquid opposed to the confluence portion. The hole, the head body and the chuck mounting body are connected to each other at a confluence place of the two kinds of water-stopping liquids by means of freely fixing means. The water-stopping liquid injection system according to claim 4, wherein the head body is provided with injection screw joints which are respectively communicated with the first flow path and the second flow path, and each of the injection thread joints is connected to the first The flow path and the second flow path are filled with a non-hardening material. The water-stopping liquid injection system according to any one of claims 1 to 5, wherein the injection device is connected between the header and each of the high-pressure pumps via a connection with a check valve. The water-stopping liquid mixing and injection system according to any one of claims 1 to 6, wherein: the aforementioned two kinds of water-stopping liquids, one of which is a urethane prepolymer, and the other of which is an aqueous emulsion; It consists of water, a resin solid component having a molecular structure with a hydroxyl group, and an anionic surfactant. A plug for plugging water-stopping liquid is provided with a plug body composed of a cylindrical body having a predetermined length and a shape in which a hollow hole of a predetermined size is formed in a central axis direction of a length direction. The plug body has an injection port. At one end and the other end serving as a spout outlet, the aforementioned injection port is provided with a coupling tool which is detachably coupled to the water-stopping liquid injection tool, and a stirrer is housed in the hollow hole. As described in claim 8, the stopper liquid is mixed into the plug, wherein a check valve is installed at either the injection port or the discharge port of the plug body, and the check valve at the injection port can be used as the coupling device. . According to claim 8 or 9, the stopper liquid is mixed into the plug, wherein: the plug body is separated into a mixture and an ejection body; 混合 the mixture is formed with a hollow hole having a size for inserting the blender, The discharge body has a hollow hole for stopping the flow of water and an end portion serving as the discharge port. The mixing body and the discharge body are accommodated in the hollow hole of the mixture, and are detachably connected. Means join together. According to claim 10, the stopper mixture is injected into the plug, wherein the discharge body is a cylindrical body having a sacrum at one end and an expansion sleeve is inserted, and the discharge body and the mixture are screwed together by a screw. When joined together, the expansion sleeve is compressed and expanded to prevent the water stopper mixed injection plug from being pulled out of the injection hole when the water stopper mixed injection plug is inserted and fixed to the injection hole. The stopper mixture injection plug according to claim 11, wherein the expansion sleeve has a plurality of expansion sleeves and is made of an elastic body having the same shape. The water-stopping liquid mixing injection plug according to any one of claims 8 to 12, wherein the agitator is a static agitator. A water-stopping method for a cement-based composition structure, comprising the following steps (a) to (d), (a) a perforation step, and setting a predetermined leaking place for a crack or the like of the cement-based composition structure Size and depth of injection holes; (b) plug insertion and fixing steps, mixing the water stopper as described in any one of claims 8 to 11 with a stirrer built in, stirring and mixing the two water stoppers The injection plug is inserted into and fixed to the aforementioned injection hole; (c) a water stop liquid injection step, which joins the injection device that merges the two kinds of water stop liquid and injects the combined liquid with the water stop liquid to inject the plug, and uses the stop The water-liquid mixture is injected into the plug to stir and mix the aforementioned confluent liquid and injected into the leaky space; (d) the disassembly step of the injection device, and after the step (c), the water-stopping liquid is injected into the plug and left in the aforementioned place. The injection tool is detached from the water injection liquid mixed injection plug into the injection hole. The water-stopping method for a cement-based composition structure according to claim 14, wherein the water-stopping liquid of step (b) above is mixed into the plug, and the water-stopping method according to any one of claims 8 to 13 is used The liquid mixing injection plug has a repairing step. After the step (d), the mixture is removed and pulled out while leaving an ejection body in the injection hole, and the injection hole of the extraction hole is removed. The opening is filled with a repair material for repair.