JPS5927803B2 - Flexible cylindrical pipe for waterway detour in flood control civil engineering work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flexible cylindrical pipe used for diverting running water during flood control civil engineering work.

In this invention, waterway detouring refers to civil engineering work in which water is guided to avoid the construction site and bypass the side of the construction site in flood control civil engineering works such as river improvement, bank protection work, riverbed construction, bridge pier construction, and erosion control work. This refers to construction work that prevents water flow from interfering with water flow.

Conventional civil engineering works that involve running water, spring water, or shallow water, such as river improvement, bank protection work, river bed work, bridge pier construction, and landslide erosion control work, generally involve excavating so-called temporary channels to circulate water, or using wooden or metal gutter pipes. Water canal detour work is being carried out using mortar and concrete pipes, but the excavation of such temporary canals requires backfilling after excavation, and a large area for storing leftover soil from these construction works. It requires a large amount of space, and there is a risk of earth and sand flowing out from temporary excavation channels, landslides and collapses due to shallow water, and in addition, excavation requires a considerable amount of time and costs.

In addition, when using wooden gutter pipes, mortar, concrete pipes, or steel pipes as temporary waterways, the installation site must be horizontal or downhill, so appropriate ground work is required. ,
Since pipes are usually heavy, the foundations, supports, etc. need to be sturdy, especially if they are made of wood.
In reality, transportation, movement, and reuse are almost impossible due to corrosion and other factors.

In addition, in river improvement work in urban areas, etc., if there is no open space in which to excavate a temporary channel, temporarily damming the flowing water and performing downstream river bed work may lead to depletion of firefighting water, making the work impossible. There are even concerns.

As mentioned above, in order to shorten the construction period and reduce costs for temporary waterway installation work, there are measures such as omitting excavation work, reducing the weight of wooden and other gutters and pipes, preparing the ground, and destroying rocks and earth in areas where low waterways are planned. There is a need for a method for avoiding and detouring around large obstacles, or for removing those obstacles, and in order to meet these demands as much as possible, the present invention aims at using the following means. .

In this invention, a highly waterproof adhesive mainly composed of natural rubber, synthetic rubber, or polyurethane is applied to one or both sides of a woven fabric made of natural or synthetic fibers using a spreader, and then on top of this applied layer. A long piece of material coated with a finishing compound mainly composed of natural rubber, synthetic rubber, or polyurethane using a calendar, etc., and vulcanized and cured under conventional conditions such as appropriate pressure, temperature, and time. 2. To make the rubberized cloth wider according to the desired outer diameter of the main body.
- Connect several pieces in the middle direction with an overlapping margin of ~20mm to make a wide one. Glue between them using a rubber-based or polyurethane-based flexible adhesive, and use this as the axis in the vertical direction. Glue it into a cylindrical shape using the same adhesive as above to make it into a cylindrical shape, and then place a piece of rubber made of the same material as the main body rubberized fabric prepared in advance on the joint part of the outer circumferential surface of the gluing point. A cylindrical tube main body was obtained by pasting and reinforcing the seam reinforcing tape, which was cut into a long thin tape with the same length as the main body, using the same adhesive as above, and obtained in this way. Both ends of the cylindrical tube main body, which has sufficient strength to withstand the water pressure of running water and a predetermined length and cross-sectional area, are folded back and sewn or pasted together to create an appropriate bag-shaped opening on the outside. A reinforcing bar with an appropriate thickness and circumference is inserted into the gap through an insertion port previously provided in a part of the gap, and the reinforcing bar has an outer diameter comparable to the inner diameter of the end of the cylindrical pipe body described above. A shape-retaining cylinder made of metal or hard synthetic resin is fitted, so that the inlet and outlet are kept circular, and one end of the shape-retaining cylinder is connected to another adjacent shape-retaining cylinder. The two cylindrical tube bodies are made into a shape that can be fitted to one end of the body, and the outer circumference of the cylindrical tube body is tightened with a band to extend the connection to the desired length. This flexible cylindrical pipe for waterway detours in flood control civil engineering works is made of rubberized fabric and is lightweight, flexible, and capable of detouring a large amount of water despite its small volume.

Next, an explanation will be given of an embodiment shown in the drawings of the construction of a rubber-coated cloth cylinder for detouring waterways used for detouring waterways in the present invention.As shown in FIG. A woven fabric woven from fiber is used as base fabric 1,
On both sides, glue layers 2, 2 are formed by applying a highly waterproof rubber glue made of a blend of natural rubber and synthetic rubber using a splendor, and natural rubber and A highly waterproof finishing compound made of synthetic rubber is applied to a relatively thick layer using a calender to form the surface rubber layers 3, 3, which are then heated and pressed under the same processing conditions as are commonly used. A long rubberized cloth A (FIG. 1) is produced by curing with sulfuric acid.

Next, as shown in Fig. 2, the rubberized fabric A obtained as described above is made to have an overlapping margin S (2 to 20 cm) between each other in the width direction in order to make it wide in the middle according to the desired outer diameter of the main body. A glue material made by joining together several sheets (three sheets in the figure) to make a wide one, and further applying the same glue used in the glue layer 2 between them (overlap margin S). Both ends of the rubberized fabric A, which was glued together with layer 2' and joined together to form a cylindrical shape with the longitudinal direction as its axis as shown in Figure 3, were glued together with the same glue layer 2' as above. Then, on the seam part of the outer circumferential surface of the adhesive part of the rubberized cloth A (the adhesive part by the glue layer 2'), the rubberized cloth A, which is the main rubber cloth prepared in advance, is attached. A seam reinforcing tape 4 made of rubberized cloth made of the same material and cut into an elongated tape having the same length as the main body is reinforced with a glue layer 5 made of the same adhesive glue as described above.
This is assumed to be the cylindrical main body portion 6.

The cylindrical main body 6 thus obtained has sufficient strength to withstand the water pressure of flowing water, and has a predetermined length and cross-sectional area.

Next, as shown in FIG. 4, both ends of the cylindrical main body 60 are folded back to create a suitable bag-shaped gap 8 on the outside to form a folded part 7, and the ends and the main body 6 are sewn together 13. (or pasted), and furthermore, a reinforcing bar 9 having a considerable thickness and circumference is inserted into the gap 8 through an insertion opening (not shown) previously provided in a part of the bag-shaped gap 8. As shown in FIG. 6, a metal or hard synthetic resin shape-retaining cylinder 10, 10' having an outer diameter comparable to the inner diameter of the end of the cylindrical main body 6 is fitted.

As shown in FIG. 5, the shape-retaining cylinders io and io' have a protrusion 11 and a recess 11' that can be fitted into the opposing end surfaces of the shape-retaining cylinder 10 and 10'. , a shape-retaining cylindrical body 10 that is integrally connected by fitting them together,
10', and those shape-retaining cylinders 10
, 10' are fitted into the opposing ends of the shape-retaining cylinders 10, 1, with the mutually adjacent cylinder main bodies 6.6 facing each other.
0', the tube main bodies 6, 6 are connected as shown in FIG.

Furthermore, the outer periphery of the connection part is also covered with a band 1 made of rubberized cloth.
2 to connect and extend the cylindrical pipe main body part 6 to a desired length, and in this way, a large amount of water can be bypassed and distributed through the light weight, flexibility, and small volume of the present invention. This constitutes a cylindrical pipe body for waterway detouring that can be used to detour waterways.

The flexible cylindrical pipe for waterway detouring of the present invention is suitable for the scale of flood control civil engineering work, for example, as shown in FIG. The upper and lower two locations of dam are dammed with damming materials c and c, and the upstream and downstream locations of the dammed locations are connected and extended to the required length with the flexible cylindrical pipe for waterway detour according to the present invention, as appropriate for d. Support members e and e are attached to both ends of the flexible tubes d and d so that several tubes communicate in a roundabout manner.
The cable should be fixed and installed so that it can sufficiently withstand the resistance of running water.

As mentioned above, in order to perform waterway detour work using the flexible cylindrical pipe for waterway detouring of the present invention, it is possible to obtain a desired length by gluing waterproof rubberized cloth depending on the scale of the civil engineering work. Appropriate number of cylindrical pipe main bodies 6 can be connected and extended to a required length by shape-retaining cylinders 10, 10', and can thereby be used with sufficient resistance to the water pressure of running water, and is also flexible. Because it is flexible, it can be moved and installed easily and quickly.

Moreover, the inner diameter can be appropriately enlarged according to the flow rate, and several waterway detour conduits can be used simultaneously if necessary.

When installing the canal bypass cylinder, water is passed from upstream to downstream across a certain section, similar to conventional water passage means such as temporary channels and conduits, so the flow of water necessary for the construction work is reduced. One end of the cylinder for the detour channel is submerged and fixed in the dammed water upstream of the dammed section, and the other end is extended downstream of the construction section, and the water taken in from the inlet by flowing water pressure is It is also possible to release it towards the outlet.

In addition, since the cylindrical pipe main body 6, which serves as a detour waterway, is flexible and can be bent freely, it is easy to pass water around obstacles such as rocks, earth and sand, excavation machines, and buildings. Since it can also be used in formulas, it is possible to pass water over the height of the earth embankment within the range of the head of the detour water.

In addition, since it is extremely lightweight during transportation, it is easy to transport, fold, and store, and is therefore convenient for secondary work such as excavating large-scale temporary channels, installing gutter pipes, etc., and backfilling and removing them. In addition, there is no need for a storage site for leftover soil associated with these construction works, and it is possible to prevent the outflow of earth and sand from excavated channels, landslides and collapses caused by shallow water, and the installation location when using gutter pipes etc. This eliminates the need to consider the slope of the road, as well as appropriate ground work and foundation support structures, making it possible to easily and quickly install a detour waterway without being subject to restrictions on temporary waterways in narrow spaces such as urban areas.

Therefore, it has a great effect on shortening the construction period and reducing costs for diverting waterways, which are necessary for civil engineering works in general.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a rubber-coated fabric constituting the main body of the waterway detour tubular body of the present invention, and FIG. 2 is a cross-sectional view showing the rubber-coated fabric of FIG. 1 joined in the width direction. Fig. 3 is a sectional view of the tube main body, Fig. 4 is a longitudinal side view showing the state of the end of the tube main body, Fig. 5 is a longitudinal side view of the shape-retaining cylinder, and Fig. 6 is a longitudinal sectional view of the tube main body. FIG. 7 is a longitudinal side view showing the state of the connecting portion of the main body, and illustrates the state of laying a detour waterway in which the waterway is detoured to avoid the site of river revetment construction using the waterway detour pipe of the present invention. It is an explanatory diagram. 1... Base fabric, 2, 2... Glue layer, 3,
3...Surface rubber layer, A...Rubber coated fabric,
S...Overlapping allowance, 2'...Glue layer, 4.
... Seam reinforcement tape, 5 ... Glue layer,
6... tube main body part, 7... folded part, 13... suture, 8... bag-shaped gap, 9
...Reinforcement bar, 10, 10'...Shape-retaining cylinder, 11...Protrusion, 11'--Concave part,
12...Tightening band.

Claims (1)

[Claims] 1. Create a cylindrical pipe main body with sufficient strength, predetermined length, and cross-sectional area to withstand the water pressure of flowing water associated with flood control civil engineering work by pasting together rubberized cloth into a cylindrical shape, and form the main body of the cylindrical pipe with a specified length and cross-sectional area. In order to maintain the maximum cross-sectional area and increase water flow, both ends of the cylindrical tube body are folded back and sewn or pasted together to form an internal gap. A shape-retaining cylinder made of metal or hard synthetic resin is inserted, and a shape-retaining cylinder made of metal or hard synthetic resin having an outer diameter comparable to the inner diameter of the tube main body is fitted. From a flexible rubber-coated cloth tube that can be connected and extended to a desired length by fitting the tube-shaped body from both ends of the tube and tightening the outer circumference of the tube-shaped body with a band. A flexible cylindrical pipe for waterway detour in flood control civil engineering work, characterized by: