JPH06105024B2 - Pipe roof waterproofing device and construction method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a construction method for waterproofing the ground between adjacent pipes of a pipe roof buried in the ground.

[0002]

2. Description of the Related Art A pipe roof is constructed by propelling a plurality of pipes in parallel in the ground from a ground or a surface base. Since the earth and sand located above the pipe roof is supported by the pipe roof, the earth and sand under the pipe roof can be removed to create a space portion, which enables various operations in the ground. However, depending on the size of the gap between the pipes that make up this pipe roof and the type of sediment, water may leak from the top or sediment particles may drop, which may hinder underground work under the pipe roof. There is.

In order to ameliorate such drawbacks in pipe roofs, many methods have been proposed and implemented in the past. As one of them, a method of connecting steel pipe piles by a joint between piles is known. According to this method, each adjacent pipe has a mechanical connecting projection (joint) along the side portion, which causes the pipes to be connected in a row and eliminate a gap between the pipes. CT type joints, square CT type joints, CC type joints and the like are known as connecting means between pipes (Fig. 2a). This connecting member is provided on the outer side wall portion of each pipe by means of welding or the like in advance, and when the pipe roof is constructed, each pipe is fitted into this connecting member and propelled. This method
Although it provides excellent gap water stoppage, it requires the preliminary treatment of each pipe, the work is complicated, and the biggest drawback is that the curved pipe roof is difficult to install and cannot be used. There are drawbacks.

Another method is to improve the ground in the gap between the pipes of the pipe roof. In this method, the earth and sand in the gap of the pipe are bored, an injection rod is inserted into this hole, and a chemical solution is sprayed to fix the earth and sand in this gap (Fig. 2b). By this means, the waterproofness of the sediment between the pipes is improved, and it is possible to prevent water leakage and sediment particles from falling. However, even with this method, positioning when inserting the injection rod by boring is difficult,
Especially in the case of a curved pipe roof, the work becomes extremely difficult.

When the roof pipe is large, for example, when the diameter is 1.5 m or more, it is possible to manually inject the chemical liquid for earth and sand treatment from the inside of the pipe to the outside. In this case, each pipe is preliminarily bored to form a large number of holes, and after the completion of the pipe roof, the treatment chemical solution is injected into the earth and sand through the holes by manual means from the inside of each pipe (FIG. 2C). This method cannot be carried out unless the roof pipe is large enough to allow humans to enter it, and there is a drawback that sediment particles, especially high-pressure groundwater, intrudes through a large number of holes provided in the pipe. .

[0006]

[Problems to be Solved by the Invention]
Effectively prevent water leaks and sediment particles falling through the gap between pipes buried in the ground, and overcome problems such as leaks with relative accuracy in a straight or curved pipe roof under any circumstances. Therefore, it has been desired to develop a water-stop processing method for pipe roofs that enables efficient work.

Therefore, the present invention has been made in order to solve the above problems, regardless of whether the pipe is a curved pipe or a straight pipe, and regardless of the size and size of the pipe, It is an object of the present invention to provide an apparatus and a construction method capable of treating sediment between pipes and solving problems such as water leakage.

[0008]

The present invention has been completed based on the above-mentioned object, and one of the gist thereof is a treatment for stopping water between adjacent pipes of a pipe roof laid by a propulsion method. A device, a guide pipe provided in an axial direction of an outer wall of each pipe, an injection nozzle portion that slides in each guide pipe to inject high-pressure water-stopping material to the ground between the pipes, and supply of fluid 2. Description of the Related Art There is a pipe roof water stoppage treatment device including an injection pipe having a front part and a rear part.

Another aspect of the present invention is a method of stopping water between adjacent pipes of a pipe roof laid by a propulsion method, which is clogged with earth and sand by the propulsion method extending in the axial direction of the outer wall of the pipe. The step of cleaning the guide tube
There is a pipe roof waterproofing method including a step of injecting a waterproofing material into the ground between the adjacent pipes at a high pressure while pulling out the inside of the cleaned guide tube from its tip.

The feature of the present invention is that the pipe is processed in the axial direction outside the pipe (main pipe) buried in the ground, or a small pipe is inscribed separately, and the small pipe is guided. As this, insert a slidable injection pipe into which water-stopping material such as cement milk, which is already known, such as solidifying material, can be slidably inserted, and the water-stopping material is injected from the pipe into the ground to exist in the gap between the pipes It is to treat the earth and sand and to stop the water between them, and it is possible to inject the water stopping material over the entire length of the pipe. The guide pipes are usually installed at the antipodal position with respect to the main pipe, and the number of the guide pipes may be installed at the antipodal position of the cross section, that is, at least one pair on the right and left sides, preferably 2-3 pairs.

Needless to say, the diameter of the injection pipe inserted into this guide pipe is smaller than that of the guide pipe, but the guide pipe is made slidable, and the outer peripheral portion thereof is surface-treated in some cases. . This water injection pipe has a plurality of injection nozzles on its outer wall in the lateral direction, and the positional relationship is such that each nozzle matches the slit of the guide pipe. Also,
This injection pipe may have one nozzle at the tip end in addition to the above-mentioned injection nozzle, but this does not occur when the main pipe is propelled into the ground and the guide pipe is clogged with earth and sand. It is a water jet nozzle that removes water. The injection pipe further has a supply part for supplying the water blocking material, which is preferably in the form of a supply rod for sending the water blocking material and controlling the sliding motion while blocking the rotational motion of the injection pipe. If the main pipe is a bent pipe, the supply rod is conveniently a flexible steel pipe.

Although a water jet nozzle for preventing clogging of sediment is provided together with the water stopping material injection nozzle in the injection tube, an injection tube having a water jet nozzle and an injection tube having a water stopping material injection nozzle are provided. And may be used separately.

The water-stopping material injected into the earth and sand is, for example, cement / milk, or an aqueous latex, an adhesive synthetic resin solution, a dispersion liquid, etc., for the purpose of preventing leakage of groundwater and the like. Lime milk for property alteration,
Other substances that chemically react with soil components to solidify or that change their properties can be widely used according to the purpose.

[0014]

According to the present invention, both the guide pipe and the injection pipe passing through the guide pipe are in the pipe of the main pipe, and there is no effect on the earth and sand existing in the gap between the pipe main pipes for the earth and sand treatment as a water stop. Since the above structure is not required, the earth and sand can be treated in the gap as it is at the same time as the main pipe is buried, and no extra work is required. It is also easy to repeat the sediment treatment, and in some cases, it is possible to perform a plurality of water stops in one step. Furthermore, if a convex portion is formed on one of the guide pipe and the injection pipe and a concave portion is formed at the corresponding position on the other corresponding pipe, the injection pipe rotates from the central axis in the longitudinal direction when the injection pipe slides in the guide pipe. In other words, twisting can be prevented.

[0015]

Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. In addition, in each figure, the same reference numeral has the same meaning.

FIG. 1 is a perspective view schematically showing an embodiment of the present invention, and the inside of a dotted line circle is a partially enlarged perspective view showing the action of the injection tube inserted into the guide tube. In FIG. 1, the main pipe 1 is a guide pipe 2 which is inscribed in the outer wall of the main pipe 1 and is open at an inscribed line with the main pipe 1 to form a slit 2a along the entire length of the pipe 1. Within the circle indicated by the dotted line,
The injection tube 3 is shown inserted into the guide tube 2,
Reference numeral 4 denotes an injection nozzle provided on an axis orthogonal to the slit 2a in the length direction on the outer wall of the injection tube, and the number thereof is 1 to 3, usually 2. Generally, as the number of injection nozzles increases, the opening of the slit 2a increases accordingly. In the figure, the injection nozzle 4 shows a state in which the water blocking material is injected. The type of this water blocking material differs depending on its purpose, but in the case of cement milk, it forms a solidified film 6 that connects adjacent pipe main pipes 1 in a solidified state in soil and sand. Since there are two nozzles 4 illustrated in the figure, two solidified films 6 are theoretically formed, and when there are three nozzles, the adjacent pipe main pipe 1 is used.
Although there are three solidified films 6 that connect with each other, the sprayed water blocking material is actually in a state of permeating into the earth and sand and mixed as a whole to form the solidified film 6 having an irregular shape. In this way, the adjacent pipe main pipes 1 are irregularly joined by the solidified film 6 to achieve the seal between the pipes.

FIG. 3 shows a plurality of pipes (4 in the drawing).
Is a cross-sectional perspective view showing a state in which a guide tube of (piece) is provided,
A guide tube 2 is provided at a symmetrical position of the pipe 1, and an inner tangent line of the guide tube is opened to form a slit 2a. The opening degree of the slit is determined by the number and arrangement of the injection nozzles of the injection tube to be inserted therein, but the opening angle is 180 ° or less, preferably 150 ° or less in order to prevent the injection tube from falling off.
It is preferable to form at least one pair of guide tubes 2 at a target position when viewed from the cross section of the pipe 1, but a plurality of pairs may be provided.

FIG. 4 is a side view showing the injection tube 3 inserted into the guide tube 2, and the left side of the drawing shows the tip. The injection pipe 3 has a plurality of jet nozzles 4 for water blocking material on its side surface, and when the injection pipe 3 is inserted into the guide pipe 2, the injection nozzle 4 is set in the opening slit 2a. Position. Usually, it is preferable to arrange two to three nozzles 4 in a direction crossing the longitudinal axis of the injection pipe 3, but this arrangement is on an axis orthogonal to the longitudinal axis of the pipe 3. Or on a diagonal axis. Further, although the number of nozzles 4 can be increased, the same or higher effect can be obtained by repeating the processing. It is preferable that the injection tube 3 has a conical shape at the distal end so as to reduce resistance when moving. A supply rod 5 is provided at the end of the injection pipe 3 to form a processing liquid supply unit 5 for facilitating the supply of the processing liquid and the back-and-forth movement of the injection pipe. Further, a jet nozzle 4'may be provided at the tip end portion to jet the jet water for removing the earth and sand and the like which obstruct the forward and backward movements of the injection pipe 3.

In carrying out the method of the present invention, the guide tube 2
The inside of the guide tube is cleaned using a water jet spraying device (not shown) to remove the sediment deposited on the surface. In order to reduce the amount of this earth and sand, the guide pipe portion of the most advanced pipe 1 may be previously covered with a lid during propulsion. next,
An injection pipe 3 is attached to the tip of the supply rod to be inserted into the guide pipe 2, and the supply rod is expanded and contracted, and at the same time, a water blocking material is sprayed from a nozzle 4 to perform earth and sand treatment between pipes. At this time, different water-stopping materials may be sprayed from each of the plurality of nozzles to physically treat the soil to solidify it, or to chemically treat the soil to solidify it. Since the water blocking material is injected by inserting the injection pipes 3 into the guide tubes 2 of the adjacent pipes 1, the soil in the gap portion of the pipe 1 is efficiently permeated by the water blocking material injected from both sides.

5 (a) and 5 (b) show the guide tube 2
6A and 6B are cross-sectional explanatory views showing a state in which a concavo-convex structure that fits with each other is provided on both the injection pipe 3 and the injection pipe 3. In FIG. 5A, the convex structure is provided on the injection pipe 3 side, and in FIG. The case where a convex structure is formed on the tube 2 side is expanded and shown. When inserting the injection pipe 3 into the guide pipe 2 and injecting the water blocking material, what is important is that the injection pipe 3 occupies a certain position without tilting. (That is, with respect to the center axis in the length direction), the nozzle 4 is not opened by the slit 2a and the guide tube 2 and the injection tube 3 are rotated.
As a result, the result of injection is the gap. In order to prevent this phenomenon, the mounting portion 5 of the supply rod to the injection pipe 3
Must be fixed so that there is no rattling. When the pipe 1 is curved, it is desirable that the supply rod is a flexible steel pipe, so that there is a possibility that rattling or twisting may occur at the mounting portion. FIG. 6A or FIG.
By providing a pair of concave and convex structures on both the guide tube 2 and the injection tube 3 as shown in (b), the inclination of the injection tube 3 can be prevented.

FIG. 6 is a cross-sectional explanatory view showing the state of the earth and sand treated by the injection of the treatment liquid according to the present invention, and schematically shows the state of the treatment liquid 6 that has penetrated into the earth and sand between the adjacent pipes 1. This treatment liquid may be sufficiently injected, and if necessary, for example, the treatment liquid that has penetrated may be solidified again and then repeated. Further, the treatment liquid can be changed, and the seal between the pipes 1 can be strengthened.

[0022]

According to the apparatus and the construction method of the present invention, the guide pipe is built in the pipe, and the injection pipe is also inserted in the guide pipe, so that the sand between the adjacent pipes is treated. There is an advantage that no construction is needed for the sediment between pipes.

Further, since there is no connecting portion to be fixed to the adjacent pipes, there is an advantage that even if the pipes are curved pipes or the gap between the pipes is changed, the water stopping treatment can be performed without any influence. Furthermore, it is also easy to repeat the water-stop treatment, and the repeat treatment can be performed after a while. Furthermore, it is also possible to carry out multiple water stop treatments in one step, and it is also possible to inject different water stop materials from multiple nozzles to cause chemical reactions on the spot and treat the earth and sand. Is. Furthermore, by providing a pair of concave and convex structures on both the injection pipe and the guide pipe, it is possible to prevent the injection pipe from rattling and kinking during injection.

Although the present invention has been mainly described with respect to the water stop treatment between the pipes constituting the pipe roof, the present invention is also used for the earth and sand treatment between various pipes buried in the ground or the water stop treatment with a single pipe. Needless to say, the present invention is not limited to the particular embodiments described in the embodiments.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing an embodiment of the present invention by taking a case of a pipe roof as an example, and a dotted line circle is a partially enlarged perspective explanatory view showing an enlarged main part.

FIG. 2 is a drawing showing, as a reference, a pipe roof connection method and a pipe sand treatment method between pipes according to a conventional method, and FIG. 2 (a) is a perspective explanatory view showing the connection between pipes by a CT joint. FIG. 2B and FIG. 2C are perspective explanatory views showing a method for treating earth and sand between adjacent pipes by a conventional method.

FIG. 3 is a perspective view showing a relationship between a pipe main pipe and a guide pipe according to the present invention.

FIG. 4 is a side view showing an injection tube.

FIG. 5 is an explanatory cross-sectional view showing, in an expanded manner, means for preventing the rotation inclination of the injection tube in the guide tube.

FIG. 6 is a cross-sectional explanatory view showing a state of a treatment liquid that has permeated between pipes obtained by implementing the present invention.

[Explanation of symbols]

 1 pipe 2 guide pipe 2a opening slit 3 injection pipe 4 injection nozzle 5 supply unit

Front page continuation (71) Applicant 000172813 Sato Industry Co., Ltd. 11-11 Sakuragicho, Toyama City, Toyama Prefecture (71) Applicant 000112668 Fujita Co., Ltd. 4-6-15 Sendagaya, Shibuya-ku, Tokyo (71) Applicant 000140292 Okumura Gumi Co., Ltd. 2-2-2, Matsuzaki-cho, Abeno-ku, Osaka-shi, Osaka (71) Applicant 390028015 Jizaki Kogyo Co., Ltd. 2-32-1 Nishi-Shimbashi, Minato-ku, Tokyo (71) Applicant 000146928 Morimoto-gumi Osaka 4-11 Yuhigaoka-cho, Tennoji-ku, Osaka (72) Inventor Minoru Yamamoto 1-15-2 Tamagawa Gakuen, Machida-shi, Tokyo (72) Inventor Toshinori Toyota 4-10-8 Shinkino, Abiko-shi, Chiba Prefecture (72) Inventor Takashi Oi 5-7-20 Toyohashi, Kasukabe City, Saitama Prefecture 2-202 Kasukabe House 2-202 (72) Inventor Kazuo Kagawa 2-19-309 Wakaba-cho, Asahi-ku, Yokohama-shi, Kanagawa (72) Inventor Teruyuki Wake 4-11-5 Taida, Abiko City, Chiba Prefecture

Claims (2)

[Claims] 1. A treatment device for stopping water between adjacent pipes of a pipe roof laid by a propulsion method, wherein a guide pipe provided in an axial direction of a pipe outer wall of each pipe and sliding in each guide pipe. Then, a water blocking treatment device for a pipe roof, comprising: an injection pipe having an injection nozzle portion for injecting a high pressure waterproofing material to the ground between the pipes and a fluid supply portion at the front and rear. 2. A method of stopping water between adjacent pipes of a pipe roof laid by a propulsion method, the step of cleaning a guide pipe clogged with earth and sand by the propulsion method extending in the axial direction of the outer wall of the pipe. And a step of injecting a waterproof material into the ground between the adjacent pipes at a high pressure while pulling out the inside of the cleaned guide tube from its tip, and a method of waterproofing a pipe roof.