TWI567267B - Flood protection and revetment - Google Patents

Description

Flood protection

The invention relates to a flood protection and revetment, in particular to a flood protection revetment which is located on the river bank and prevents overflow of river water.

The revetments on the banks of the rivers on both sides of the river often collapsed and collapsed under floods and floods, causing floods and ravaged homes. The reasons are as follows:

1. The concrete surface plate of the revetment and the drainage filter layer with no coarse particle gradation between the tamping soil core under the surface plate, and the concrete wave-crushing block is directly pressed on the river bed to become a gradual distribution, so the water penetrates into the concrete plate and the concrete In the sun, the hot and cold shrinkage will produce telescopic cracks, and when the concrete exerts strength, it will produce hydration heat expansion cracks. Therefore, the river water penetrates into the concrete surface and softens the soil core, causing the bank to break the bank.

2. There is a crack in the concrete surface of the revetment, which causes the soil of the soil to directly contact the river water, so that the soil of the soil is dissolved into the river water and taken out. The soil is partially melted to form small holes, and the river is repeatedly washed and washed to make the soil The small hole of the heart is transformed into a large hole and causes a break.

3. The soil water content after absorbing the soil is greater than the plastic limit of the soil, so that the soil core softens into a plastomer, softens under the impact of self-weight and water flow, and the slope slides and breaks.

4. The soil under the revetment is too soft and the bearing capacity is insufficient, and the revetment is subjected to flooding and scouring, which causes the revetment of the revetment to reduce the flood control effect.

The main object of the present invention is to provide a flood protection and revetment, thereby improving the problem of poor flood control performance of the existing revetment.

In order to achieve the foregoing disclosure, the flood protection bank of the present invention is located on a river bank, and the flood protection bank comprises: a foundation comprising a plurality of floating wood bases extending into the ground and spaced apart; a body being attached thereto In addition, the body comprises a layered rolled tamping clay core, and a drainage gradation filter layer having a thickness of more than 50 cm is disposed on the outer side of the tamping clay core, and the thickness is disposed on the outer side of the drainage gradation filter layer. a concrete face plate larger than 30 cm, and a concrete surface plate having spaced-apart shrinkage control joints, spaced-apart shear-resistant waterproof expansion joints, and the concrete face plate includes a water-facing surface and a back water surface, and the back surface The water surface is provided with a plurality of drain pipes arranged at intervals and deep into the drainage level filter layer, wherein the water content of the compacted clay soil is less than the plastic limit of the soil; and an energy dissipation layer is provided on the foundation and extends to the body The water surface of the concrete panel and the top of the energy dissipation layer form a sandbag heightening platform.

According to the above, the extrusion of the foot of the driftwood can increase the soil density of the ground, and the buoyancy of the foot of the driftwood can increase the bearing capacity of the ground, and the water content of the compacted clay soil is less than the plastic limit of the soil, which can prevent the compacted clay soil. The water absorbs water and becomes soft and sinks, and it can improve the problem of water dissolution. In addition, the drain pipe can drain and ventilate the drainage grade filter layer, so that the compacted clay core will not soften into the water, and the shrinkage control joint and resistance The shear-proof waterproof expansion joint can prevent the concrete surface from cracking, so that the water will not penetrate to improve the overall structural strength and improve the flood control effect, and the energy dissipation layer can eliminate the river flushing force.

Referring to FIG. 1 and FIG. 2, the flood protection bank of the present invention is installed on a river bank and comprises a foundation 10, a body 20 and an energy dissipation layer 30.

The foundation 10 includes a plurality of driftwood footings 11 extending into the ground and spaced apart, and the foundation 10 is provided with a drainage layer 12 on the upper portion of the driftwood footing 11, wherein the driftwood footing 11 can be made of pine wood and acacia wood. , the fir or the bamboo, the drainage layer 12 may be a coarse particle gradation or construction waste.

The body 20 is disposed on the foundation 10, and the body 20 includes a layered rolled tamping clay core 21, and a drainage gradation filter layer 22 having a thickness greater than 50 cm is disposed on the outer side of the tamping clay core 21. Further, a concrete surface plate 23 having a thickness of more than 30 cm is disposed on the outer side of the drainage gradation filter layer 22, and a shrinkage control joint 24 having a spacing arrangement on the concrete surface plate 23 and a shear-proof waterproof expansion joint at intervals are arranged. The concrete panel 23 includes a water absorbing surface 25 and a back water surface 26, and the water drainage surface 26 is provided with a drainage pipe 27 which is arranged at a plurality of intervals and penetrates the drainage gradation filter layer 22, wherein the tamping clay earth core 21 is absorbing water and containing The amount of water is less than the plastic limit of the soil.

The energy dissipation layer 30 is disposed on the foundation 10 and extends to the water surface 25 of the concrete panel 23 of the body 20, and the top of the energy dissipation layer 30 forms a sandbag heightening platform 31 capable of providing sandbag stacking. The energy dissipation layer 30 includes a plurality of stacked stone cages 32.

In the above, the concrete panel 23 may be a steel mesh or a reinforced concrete panel 23, and the drain pipe 27 is provided with a filter box 28 for filtering sand and gravel on a side of the drainage level filter layer 22. To prevent the drain pipe 27 from being blocked, and the drain pipe 27 is disposed obliquely, and the drain pipe 27 is further disposed at an inclination of 15°, and further, the distance between the adjacent shrinkage control slits 24 is 4 to 5 meters, and the shrinkage control is further performed. The seam 24 has a depth of 1 cm and a width of 1 mm. In addition, the adjacent shear-resistant waterproof expansion joints have a pitch of 50 meters.

Wherein, the flood protection bank is disposed on the bank of the river bank, and the water surface 25 of the flood protection bank is adjacent to the river, and the impact of the river is first tapped to the energy dissipation layer 30 and then contacts the water surface 25 of the concrete panel 23 of the body 20, wherein The energy dissipation layer 30 can eliminate the river flushing force. In addition, before the flood occurs, the user can stack the sandbags on the sandbag heightening platform 31 of the energy dissipation layer 30 to improve the flood control height and prevent overflow.

In the above, the drifting foot 11 of the foundation 10 extends into the soil of the ground plate, and the soft clay layer can be extended into the hard soil layer, and the extrusion of the floating wood base 11 can increase the soil density of the ground and the buoyancy. The buoyancy provided by the footing can increase the bearing capacity of the ground, and the drainage layer 12 is used for draining to eliminate the differential subsidence of the soft ground and eliminate the excess pore water pressure generated by the backfilling soil site.

In addition, the water content of the tamping clay soil core 21 is less than the plastic limit of the soil, which can prevent the tamping clay soil core 21 from absorbing water and softening and swelling, and can improve the problem of water dissolution, and the drain pipe 27 can be used for drainage level filtration. Layer 22 is drained and ventilated, so that the tamping clay core 21 will not soften into the water, and the shrinkage control joint 24 can prevent the pavement shrinkage cracking of the concrete panel 23 of the flood protection bank, and the shear resistance waterproof expansion joint can prevent the concrete panel 23 The thermal expansion and contraction and cracking enable the body 20 to be structurally intact and allow water to not penetrate, providing good structural strength for excellent flood control.

10‧‧‧ Foundation
11‧‧‧ buoyancy footing
12‧‧‧Drainage layer
20‧‧‧ body
21‧‧‧Compact clay earth
22‧‧‧Drained graded filter
23‧‧‧Concrete panel
24‧‧‧ Shrinkage Control Joint
25‧‧‧ Welcome to the water
26‧‧‧Back surface
27‧‧‧Drainage pipe
28‧‧‧Filter box
30‧‧‧ energy dissipation layer
31‧‧‧ sandbag heightening platform
32‧‧‧stone cage

Figure 1 is a perspective view of the flood protection bank of the present invention. Figure 2 is a schematic view of the end face of the flood protection bank of the present invention

10‧‧‧ Foundation

11‧‧‧ buoyancy footing

12‧‧‧Drainage layer

20‧‧‧ body

21‧‧‧Compact clay earth

22‧‧‧Drained graded filter

23‧‧‧Concrete panel

24‧‧‧ Shrinkage Control Joint

25‧‧‧ Welcome to the water

26‧‧‧Back surface

27‧‧‧Drainage pipe

28‧‧‧Filter box

30‧‧‧ energy dissipation layer

31‧‧‧ sandbag heightening platform

32‧‧‧stone cage

Claims (10)

A flood protection bank, which is a site on a river bank, the flood protection bank includes: a foundation comprising a plurality of floating wood bases extending into the ground and spaced apart; a body attached to the foundation, the body comprising There is a layered rolled tamping clay core, and a drainage grading filter layer with a thickness greater than 50 cm is disposed on the outer side of the tamping clay core, and a concrete surface having a thickness greater than 30 cm is disposed on the outer side of the drainage grading filter layer. The version, and the concrete panel are provided with spaced-apart shrink-contracting joints, spaced-apart shear-resistant waterproof expansion joints, and the concrete panel comprises a water-facing surface and a back water surface, and a plurality of spaces are provided on the water surface a drain pipe arranged and deep into the drainage level filter layer, wherein the water content of the compacted clay soil is less than the plastic limit of the soil; and an energy dissipation layer is provided to the foundation surface and extends to the concrete panel of the body The surface of the water and the top of the energy dissipation layer form a sandbag heightening platform. The flood protection bank according to claim 1, wherein the concrete panel is a steel mesh concrete panel. The flood protection bank according to claim 1, wherein the concrete panel is a reinforced concrete panel. The flood protection bank according to any one of claims 1 to 3, wherein the drain pipe is provided with a filter box at an end extending into the drainage gradation filter layer. The flood protection bank according to any one of claims 1 to 3, wherein the energy dissipation layer comprises a plurality of stacked stone cages. The flood protection bank according to claim 4, wherein the energy dissipation layer comprises a plurality of stacked stone cages. The flood protection bank according to any one of claims 1 to 3, wherein the shrinkage control slit has a depth of 1 cm and a width of 1 mm, and the adjacent shrinkage control slits have a pitch of 4 m to 5 m. . The flood protection bank according to any one of claims 1 to 3, wherein the adjacent shear-resistant waterproof expansion joints have a spacing of 50 meters. The flood protection bank according to any one of claims 1 to 3, wherein the drainage layer is provided on an upper portion of the base of the driftwood. The flood protection bank according to claim 6, wherein the foundation is provided with a drainage layer at an upper portion of the foot of the driftwood.