JP3196277U - Drainage device for earth and sand - Google Patents

Abstract

A drainage device for earth and sand embankment capable of preventing collapse of a protective wall without causing clogging of a drain pipe. A sediment embankment drainage device for preventing a landslide of a sediment embankment, comprising: a protective wall 2 covering an outer surface of the sediment embankment; A drainage pipe 3 that drains the collected water from the surface of the protective wall to a surface side of the protective wall, and a water collection pipe 4 that is buried in the earth and sand bank and has a plurality of water collection holes for collecting water from the earth and sand bank. The end surface part of the back surface side of the protective wall of the drainage pipe is connected to the side part of the water collecting pipe. [Selection] Figure 1

Description

  The present invention relates to a drainage device for earth and sand bank, and more particularly, to a drainage device for earth and sand bank provided with a protective wall for preventing landslide of the earth and sand bank.

  In general, a drainage device for earth and sand bank is installed to prevent landslides on the earth and sand bank on the slope along the road.

  As shown in FIG. 6, the conventional drainage device 20 for earth and sand embankment is disposed in the protection wall 22 through the protection wall 22 and covering the outer surface of the earth and sand embankment 21. A drainage pipe 23 for draining the collected water to the outside of the protective wall 22 is provided. As shown in FIG. 7, the drain pipes 23 are arranged at intervals in the horizontal direction to form a horizontal row, and a plurality of horizontal rows are arranged at intervals in the vertical direction. Reference numeral 10 indicates a road, and reference numeral 10a indicates a gutter.

Japanese Patent Application No. 2002-269656

  However, about 90% or more of the drainage pipes 23 in the earth and sand bank drainage apparatus 20 constructed in various places throughout the country are clogged due to solidification of sludge etc. at the back side and the outlet of the drainage pipe 23. In fact, the drainage function of the drainage pipe 23 is not sufficiently fulfilled.

  The cause of this situation will be described with reference to FIGS. The groundwater 11 flows at a higher speed than the normal time and flows in the earth and sand bank 21 at the time of heavy rain or long-term rain, and an inflow situation of groundwater as shown by reference numeral 12 in FIG. 8 is formed. In the inflow situation 12 of the groundwater, the groundwater 11 concentrates on the end of the back surface side of the protective wall 22 of the drainage pipe 23, so that the fine particles 13 move and collect and accumulate at the inlet of the drainage pipe 23. 23 inlets are blocked. This is repeated each time it rains, and as shown in FIG. 9, the fine particles 13 accumulate in the drainage pipe 23 to cause clogging. As a result, the groundwater 11 a that is not discharged through the drainage pipe 23 is protected by the protective wall 22. The water pressure is enormous and the protective wall 22 is collapsed by moving downward along the back surface of the protective wall 22.

  Accordingly, an object of the present invention is to provide a sediment embankment drainage device that can solve the above-mentioned problems of the prior art and prevent the protection wall from collapsing without causing clogging of the drainage pipe.

  In order to achieve the above object, the present invention is a drainage device for earth and sand bank for preventing landslide of a earth and sand bank, a protective wall covering an outer surface of the earth and sand bank, and penetrating the protective wall and A drainage pipe disposed in the protective wall and draining the collected water of the earth and sand bank to the surface side of the protective wall, and a plurality of water buried in the earth and sand bank and collecting water of the earth and sand bank And a collecting pipe having a collecting hole, and an end surface portion of the drainage pipe on the back side of the protective wall is connected to a side surface portion of the collecting pipe.

  In addition, the diameter of the water collecting hole is characterized in that it allows groundwater to pass through but prevents sediment from passing through.

  Further, the water collecting pipe is arranged in a direction substantially horizontal to the ground and substantially perpendicular to the axis of the drain pipe.

  The water collecting hole is formed in an upper half of the water collecting pipe embedded in the earth and sand bank.

  Moreover, the both end surfaces of the said water collection pipe are closed, It is characterized by the above-mentioned.

  Further, the plurality of drain pipes are arranged in a horizontal direction at intervals to form a horizontal row, and the plurality of horizontal rows are arranged at intervals in the vertical direction. Each of the pipes is connected to the drain pipe.

  The continuous water collecting pipe row is disposed at a lower position than the horizontal row located at the lowest position, and the continuous water collecting pipe row is a plurality of the drain pipes arranged at intervals in the horizontal direction. And a single continuous water collecting pipe to which the end surface portion on the back surface side of the protective wall of each of the plurality of drain pipes is connected.

  According to the configuration of the present invention, it is provided with a water collecting pipe embedded in the earth and sand dike and formed with a plurality of water collecting holes for collecting the water of the earth and sand dike, and the end surface part on the back side of the protective wall of the drain pipe is Since the groundwater flows in from the water collection hole of the water collection pipe while the groundwater flows in from the water collection hole, the groundwater is prevented from flowing in from the water collection hole. Only the water can be collected, and the protection wall can be prevented from collapsing by preventing the drain pipe from being clogged.

Sectional drawing which shows the drainage apparatus for earth and sand embankments which concerns on one embodiment of this invention device. The figure which expands and shows the drainage pipe and water collection pipe of FIG. The figure which shows the cross section of the plane which shows a water collection pipe, and a drainage pipe. The figure which shows the horizontal row | line | column of a drain pipe and a water collection pipe. The figure shown in other embodiment of this invention device. The figure which shows an example of the drainage apparatus for the conventional earth and sand bank. Sectional drawing perpendicular to the paper surface in FIG. The figure explaining that the drainage function of a drainage pipe is not fulfilled. The figure explaining that the drainage function of a drainage pipe is not further fulfilled.

Hereinafter, an embodiment of a drainage device 1 for earth and sand embankment according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the earth and sand drainage device 1 is provided with a concrete protective wall 2 that covers the outer surface of the earth and sand dike 21 and a protective wall 2 that passes through the protective wall 2. The collected water is drained to the outside of the protective wall 2 as drainage 14 into the gutter 10a of the road 10 and a plurality of water collections embedded in the earth and sand dam 21 to collect the water in the earth and sand dyke 21 And a water collecting pipe 4 in which holes 5 are formed. An end surface portion on the back surface side of the protective wall 2 of the drain pipe 3 is connected to an inlet 4 a formed on a side surface portion of the water collecting pipe 4. The diameter of the drain pipe 23 is, for example, about 30 to 50 mm, and the diameter of the water collection pipe 4 is approximately the same as the diameter of the drain pipe 23.

  As shown in FIG. 3, the water collection pipe 4 is disposed in a direction substantially horizontal to the ground and substantially perpendicular to the axis of the drainage pipe 3. The end face in the longitudinal direction of the water collecting pipe 4 is closed, and the groundwater 11 flowing in from the water collecting hole 5 flows into the drainage pipe 3 from the inlet 4a. The drain pipe 3 is disposed so as to be inclined downward slightly from the back side to the front side of the protective wall 2.

  The diameter of the water collecting hole 5 is set to a size that allows the ground water 11 to pass through but does not easily allow the passage of fine particles 13 such as sand or a lump. For this reason, the diameter of the water collecting hole 5 is selected so as to prevent the inflow of the fine particles 13 and not to prevent the inflow of the groundwater 11, for example, a diameter of about 5 mm to 8 mm. The size of the water collecting holes 5 does not have to be uniform in size, and may be changed according to the position where the water collecting holes 5 can be formed. For example, the inlet 4a of the water collecting pipe 4 The water collecting capacity of the water collecting pipe 4 may be evenly distributed as the distance from the water collecting pipe 4 increases. The water capacity may be concentrated in the vicinity of the inflow port 4a.

  In addition, if the number of the water collecting holes 5 is too small, the water collecting ability is lowered. Therefore, it is better that the number of the water collecting holes 4 is large as long as the strength of the water collecting pipe 4 is ensured. It is possible to achieve.

  In addition, it is preferable that the water collecting hole 5 is formed at least in the upper half of the water collecting pipe 4 except for the bottom of the water collecting pipe 4 in consideration that the groundwater 11 flows downward. In this case, the groundwater collected by the water collecting pipe 4 flows into the drain pipe 23 and is drained while being stored in the lower half including the bottom of the water collecting pipe 4 where the water collecting hole 5 is not formed.

  As shown in FIG. 4, in the earth and sand bank drainage device 1, a plurality of drainage pipes 3 are arranged at intervals in the horizontal direction to form a horizontal row 7, and the plurality of horizontal rows 7 are vertically arranged. They are arranged at intervals. Each of the plurality of water collecting pipes 3 is connected to the drain pipe 4.

  As described above, according to the present embodiment, the drain pipe 3 is connected to the water collecting pipe 4 and the water collecting hole 5 is formed in the water collecting pipe 4, so that it flows down the earth and sand bank 21. Since the ground water 11 flows from the water collecting hole 5 of the water collecting pipe 4, while the fine particles 13 are prevented from flowing from the water collecting hole 5, only the ground water 11 can be collected by the water collecting pipe 4. The collapsing of the protective wall 2 can be prevented without causing the drain pipe 3 to be clogged.

Next, another embodiment of the present invention will be described with reference to FIG.
In this Embodiment, the continuous water collection pipe row | line | column 9 arrange | positioned in the lower position rather than the horizontal row | line | column 7 located in the lowest position in FIG. 4 is provided. The continuous water collecting pipe row 9 is a single continuous line in which a plurality of drain pipes 3 arranged at intervals in the horizontal direction and an end surface portion on the back surface side of each protective wall 2 of the plurality of drain pipes 3 are connected. The water collecting pipe 8 is comprised. The continuous water collecting pipe row 9 is formed in parallel with the horizontal row 7, and the interval between the adjacent drain pipes 3 is set smaller than that in the case of the horizontal row 7. In the continuous water collecting pipe row 9, only both ends are closed, and no partition is formed in the middle for each of the plurality of drainage pipes 3. However, it is also possible to form a closed partition at an intermediate portion between adjacent drain pipes 3 and to combine each drain pipe 3 with a part of the continuous water collecting pipe 8 so that each drain pipe 3 functions independently.

  Moreover, it is preferable that the continuous water collecting pipe row 9 is formed above the side groove 10 a of the road 10. Moreover, it is preferable that the horizontal length of the continuous water collecting pipe row 9 has a length over the substantially entire lateral width of the protective wall 2.

  By providing the continuous water collecting pipe row 9, it becomes possible to surely drain the ground water 11 sent below without being drained by the upper horizontal row 7, and not drained at the upper part of the protective wall 2. Accordingly, the water pressure applied to the protective wall 2 can be reduced, and as a result, the collapse of the entire upper and lower portions of the protective wall 2 due to the water pressure load can be prevented.

DESCRIPTION OF SYMBOLS 1 Drainage device for earth and sand bank 2 Protective wall 3 Drainage pipe 4 Water collecting pipe 5 Water collecting hole 7 Horizontal row 8 Continuous water collecting pipe 9 Continuous water collecting pipe row 10 Road 10a Gutter 11 Groundwater 13 Fine particles

Claims (7)

A drainage device for earth and sand embankment to prevent landslides of the earth and sand bank,
A protective wall covering the outer surface of the earth and sand bank,
A drainage pipe penetrating the protective wall and disposed in the protective wall, and draining the collected water of the earth and sand bank to the surface side of the protective wall;
A water collecting pipe embedded in the earth and sand embankment and formed with a plurality of water collecting holes for collecting water of the earth and sand embankment;
The drainage device for earth and sand embankment, wherein an end surface portion of the drainage pipe on the back side of the protective wall is connected to a side surface portion of the water collecting pipe. The drainage device for earth and sand embankment according to claim 1, wherein the diameter of the water collecting hole is a size that allows groundwater to pass through but does not allow earth and sand to pass through. The said water collection pipe is arrange | positioned in the direction which is substantially horizontal with respect to the ground, and is substantially orthogonal to the axis line of the said drainage pipe, The Claim 1 thru | or 2 characterized by the above-mentioned. Drainage device for earth and sand bank. The said water collection hole is formed in the upper half part of the said water collection pipe embed | buried under the said earth and sand bank, The drainage apparatus for earth and sand banks as described in any one of the Claims 1 thru | or 3 characterized by the above-mentioned. The both ends of the said water collection pipe are closed, The drainage apparatus for earth-and-sand banks as described in any one of the Claims 1 thru | or 4 characterized by the above-mentioned. The plurality of drain pipes are arranged in horizontal rows at horizontal intervals to form a horizontal row, and the plurality of horizontal rows are arranged at intervals in the vertical direction,
Each of the said water collecting pipe is connected to the said drain pipe, The drainage apparatus for earth and sand embankments as described in any one of Claim 1 thru | or 5 characterized by the above-mentioned. Comprising a continuous water collection pipe line disposed at a lower position than the horizontal line located at the lowest position,
The continuous water collecting pipe row is a single continuous line in which a plurality of drain pipes arranged at intervals in the horizontal direction and an end surface portion on the back side of the protective wall of each of the plurality of drain pipes are connected. It is comprised from a water collection pipe, The drainage apparatus for earth and sand embankments of Claim 6 characterized by the above-mentioned.

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