JPH038438B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is a method for repairing damaged areas such as cracks in a sewage pipe by injecting a water-stopping agent to continuously and properly repair cracks and other damaged parts of the sewage pipe depending on the state of the damage. This relates to repair methods.

<Prior art> Air packers for repairing sewer pipes, which have been commonly used in the past, have been developed, for example, by
As stated in Publication No. 18192, there are 2 parts on the police car body.
It is equipped with one chemical solution (grout) hose, two corresponding nozzles, and one air hose. For this reason, with the two-component chemical solution commonly used for this type of water stop agent, only a single water stop agent can be injected (injected). In this case, as the two-component chemical solution, a relatively inexpensive cement solution and an expensive acrylic solution are known. Therefore, when it is desired to carry out repairs by injecting two types of chemical solutions, it is necessary to first pull out the packer from the conduit and bring in a separate packer.

<Problems to be solved by the invention> However, damage such as cracks that occur in a single sewage pipe is not limited to one location, and large and small damage may occur in succession. many. For this reason, with the above-mentioned patch car that can only inject a single type of water stopper (two-component solution), it is necessary to inject an expensive acrylic solution even in the case of a large damaged area. Of course, each time we take out the police car (carry out),
It is possible to bring in a separate pack car that can inject a water sealing agent suitable for the damaged area, but this is not actually done because it is difficult to work with.

In view of the above-mentioned circumstances, the present invention has been developed to provide an economical stopper that enables the injection of a water sealing agent according to the state of damage, even if there are successive large and small damaged areas in a single sewage pipe. The purpose of this project is to provide a method for repairing sewer pipes by injecting water agents.

<Means for Solving the Problems> The present invention provides a method for repairing sewage pipes in which a water stop agent is sprayed from an air packer positioned at a damaged area while monitoring a TV car brought into the premises. Three chemical liquid valves, four chemical liquid hoses connected to these into which two types of two-component solutions can flow, and at least one air hose are connected, and the four chemical liquid hoses are connected to a ground position. The water is guided to two types of two-component solution tanks mounted on the water stop truck, and an inexpensive two-component solution such as cement solution is applied to large damaged areas, and an expensive two-component solution such as acrylic solution is applied to small damaged areas. The solution is continuously injected into the conduit by switching between two sets of chemical solution hoses among the four chemical solution hoses.

<Function> By adopting the repair method as described above, when a police car approaches the damaged area based on the surveillance of the TV car, if the damaged area is large, an inexpensive two-way repair method can be used.
A liquid solution (cemeton liquid) is ejected from a chemical valve through two chemical hoses by driving a predetermined pump, and serves as a water stop agent outside the car to repair damaged parts. In addition, if the damaged area is small, an expensive two-component solution (inorganic solution such as acrylic solution) can be sprayed out from the chemical valve via two other chemical hoses by driving a predetermined pump. When mixed in pipes, it becomes a water stop agent and repairs damaged areas. However, in the case of a two-component cement liquid, the two chemical liquid hoses are placed near a single chemical liquid valve, and the two chemical liquid hoses are mixed in advance using a chuck valve or the like, and the mixture is ejected from the single valve. Therefore, if this packer and chemical supply means are used, even if a single sewage pipe has successive large and small damages, repairs can be made in sequence according to the damaged locations.

<Example> Hereinafter, the present invention will be described in detail based on the drawings of the example.

First, in this air packer 1, three chemical liquid valves 2, 2, 2 are arranged at equal intervals on the body of the packer main body 1a, oriented so that the respective discharge ports 2a, 2a, 2a converge at one point. In addition, among the chemical liquid valves 2, two chemical liquid hoses 3, 3 are directly connected to the two chemical liquid valves 2, 2 for acrylic solution, and the remaining one chemical liquid valve 2 has two chemical liquid valves 2, 2. The cement liquid chemical hoses 3', 3' are connected in advance with a chuck valve 4, which serves as a mixing valve, arranged near the chemical liquid valve 2. Further, two air hoses are used to inflate the main body 1a of the vehicle, namely, the main air hose 5 and the pilot air hose 5'.
That is, six hoses are connected to this air packer 1. Among these hoses, the chemical liquid hoses 3, 3 of the chemical liquid valves 2, 2 for acrylic solution are connected to the two through air-driven pumps 8, 8 via a hose reel 7 mounted on a loading platform 6a of a water stop truck 6 disposed on the ground.
It is connected to the lower end of each polytank solution tank 9, 9. In addition, two cement liquid chemical hoses 3',
3' is led to snake pumps 8', 8' via another hose reel 7', and connected to the lower ends of two polytank solution tanks 9', 9' via the snake pumps 8', 8'. There is. Furthermore, the air hoses 5 and 5' are connected to the compressor 10 through the air hose reel 7''.
Connect to. In this case, a portion of the pilot air hose 5' is led to the control device 11. Also,
Solution tanks 9, 9, 9' for the two types of two liquids,
In the middle of each installation of the mixers 9', mixer bodies 12, 12' of swing type are attached to the tops of the supports 13, 13' to serve as solution stirring means.

Here, when detecting and repairing damaged parts such as cracks in the sewage pipe A, the air packer 1 is connected to the squid-type television car 1 via a connecting cord 14 of a certain length.
5 into the sewer pipe A through manhole B. In this case, TV car 15 and air pack car 1
A traction wire 16 tied to both ends of the manhole is connected to winches C and C disposed outside of both manholes B and B. In addition, the six hoses (chemical solution hoses 3, 3, 3', 3' and air hoses 5, 5') pulled out from the air pack car 1 are connected to each of the hoses of the water stop car 6 waiting on the ground through one manhole 8. Connect to 7', 7''.

In this state, by operating the winches C and C, the television car 15 and the air pack car 1 are moved appropriately through the sewer pipe A, and the monitor car waiting on the ground displays the pipe situation on the air pack car 1 taken by the TV car 15. (not shown), and the air pack car 1
The front and rear bulges 1b, 1b of the air packer 1, which are directed to the front and rear positions of the damaged part D, are placed directly under the damaged part D such as a crack or water leakage part, and are used to drive the compressor 10 of the water cutoff vehicle 6. air hose 5,
It is inflated with pressurized air supplied through 5' and brought into close contact with the wall of sewer pipe A. In addition, the water stop agent 17 to be filled in the damaged part D should be a solution depending on the damage situation (for small damage, an acrylic solution should be used)
In case of major damage, use cement liquid for economical use). In addition, this type of water stop agent 17 is a so-called two-component solution that is a combination of a hardening agent type solution and an accelerating agent type solution (for example, acrylic solutions A and B, cement solutions A and B, etc.). ). Incidentally, when the bulging parts 1b, 1b of the air packer 1 inflate to a predetermined pressure, a sensor (not shown) provided at the tip of the pilot air hose 5' operates, and the air of the compressor 10 is released via the control device 11. Stop pumping.

First, when filling a small damaged area Da with an acrylic solution as a water stopper, the two-component solutions 17a and 17a' are placed in the barrel-shaped solution tanks 9 and 9, and the mixer body 12 is switched into the tank. stirring blade 12a of
Stir with a holder. After that, the operation panel serving as the control device 11 is operated as appropriate to air-drive pumps 8 and 8.
The solutions 17a, 17a' sucked in from the bottoms of the solution tanks 9, 9 flow out from the respective chemical hoses 3, 3 to the chemical liquid valves 2, 2, and from the discharge ports 2a, 2a of the chemical liquid valves 2, 2. The two liquids are sprayed at a predetermined pressure between the walls of the sewage pipe A, and the two liquids mix in the gap between the walls to form a water stop agent 17 that fills and repairs the damaged area Da.
At this time, if the supply of the solution is stopped, the discharge ports 2a, 2a of the chemical liquid valves 2, 2 are automatically closed.

Thereafter, the air packer 1 is moved in the same manner as the known air packer movement, after once contracting the bulging portions 1b, 1b, the wire 16 is pulled (wound) to move the air packer 1 along with the television wheel 15 through the sewer pipe A. Furthermore, if the next damaged part D appears on the monitor taken with this TV car 15, the damaged part D
As before, the center of the air packer 1 is placed directly below. In this case, the damaged part D is a large damaged part
For Db, cement liquid is used as an economical water stopper.

That is, the two liquid cement liquids 17b and 17b' are stirred in the solution tanks 9' and 9' using the stirring blades 12a' of the switchable mixer body 12' in the same manner as described above, and
These solutions 17b and 17b' are caused to flow out from the chemical liquid hoses 3' and 3' to the chemical liquid valve 2 by driving the two-stage snake pumps 8' and 8'.
7b and 17b' are mixed in advance at the intermediate catch valve 4 and flow into the chemical liquid valve 2, and are ejected from the discharge port 2a to become the water stop agent 17, filling and repairing the large damaged part Db. Below, there are large and small damaged areas in sewer pipe A due to the movement of Air Police Car 1 and TV Car 15.
When Da and Db appear, the damaged portion can be properly repaired continuously by simply switching the solution to the four chemical hoses 3, 3, 3', and 3' each time.

<Effects of the Invention> As described above, the method of repairing sewer pipes by injecting a water stop agent according to the present invention includes at least three chemical liquid valves of air packers and four chemical liquid hoses that can use two types of two-component solutions. By using a connection type that leads a specified air hose to four solution tanks containing at least two types of two-component solutions, a relatively inexpensive cement solution can be used to repair a large portion of the damaged area. It is placed between sewage pipes to act as a water stopper, and because it requires less filling in small damaged areas, it is possible to use expensive acrylic solutions with good permeability, making it extremely economical. It could be a repair. Of course, at this time, the solution flowing into each chemical solution hose is provided by independent agitation of four solution tanks mounted on a water stop wheel, and a two-component independent system that supplies the solution to the chemical solution valve via an independent chemical solution hose. Therefore, it does not solidify during the hose supply stage, and even if there is a large or small damaged part in the sewage pipe, it is sufficient to send and squirt the prescribed solution each time. In other words, once the air packer has been delivered to the sewer pipe, it is sufficient to simply advance it a predetermined distance without changing the air packer so that it can apply the appropriate chemical solution to the damaged area, allowing for proper repairs and improved workability. In addition, this repair method
This can be done remotely by appropriately operating a water stop truck, monitor truck, winch, etc. located on the ground, and it has the same effect as the conventional use of an air pack car.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the repair method of the present invention in use, and Figure 2 is an explanatory diagram of filling in small damaged areas.
Figure 3 is an explanatory diagram of filling a large damaged area, Figure 4 is a slope view of the air packer, Figure 5 is an explanatory diagram of the same piping, Figure 6 is a plan view of the chemical nozzle, and Figure 7 is a diagram of the water stop car. FIG. 8 is a side view showing the main parts, FIG. 8 is a plan view thereof, and FIG. 9 is a side view of the main parts of the mixer body. 1... Air packer, 2... Chemical liquid valve, 2
a...Discharge port, 3, 3'...Medical solution hose, 4...
Check valve, 5... air hose, 6... water stop truck, 8, 8'... pump, 9, 9'... solution tank.

Claims (1)

[Claims] 1. In a sewer pipe repair method that sprays water stop agent from an air pack car brought into the damaged area under the supervision of a television car, the air pack car is used for at least 3 times.
A chemical solution valve, four chemical solution hoses for two types of two-component solutions, and at least one air hose are installed. Inject a water sealant with an inexpensive two-component solution such as cement solution, and inject a water sealant with an expensive two-component solution such as an acrylic solution at small damaged areas, using two out of the four chemical hoses. A method for repairing sewage pipes by injecting a water stop agent, characterized by continuously injecting water into the pipe by switching the supply of a chemical solution hose.