CN112942243A - Bank dyke geotechnical cloth protective structure and bank dyke geotechnical cloth protective system - Google Patents
Bank dyke geotechnical cloth protective structure and bank dyke geotechnical cloth protective system Download PDFInfo
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- CN112942243A CN112942243A CN202110152707.4A CN202110152707A CN112942243A CN 112942243 A CN112942243 A CN 112942243A CN 202110152707 A CN202110152707 A CN 202110152707A CN 112942243 A CN112942243 A CN 112942243A
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- bank
- geotextile
- main chain
- flexible net
- protective structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a bank geotextile protective structure and a bank geotextile protective system, belongs to the technical field of hydraulic engineering and engineering emergency rescue, and provides a bank geotextile protective structure capable of resisting flood erosion to a bank; the bank embankment geotextile protection structure comprises two main chains, a flexible net and a geotextile layer, wherein the two main chains are arranged in parallel, the lower end of at least one main chain is connected with a cutoff stone, and the upper end of each main chain is a fixed end for being fixed on a bank embankment; one side edge of the flexible net is fixedly connected with one main chain, and the other side edge of the flexible net is fixedly connected with the other main chain; the geotextile layer is laid on the flexible net in an attached manner. The invention can tightly attach the geotextile layer to the bank which is collapsed by depending on the self water pressure of the water body so as to play a role of resisting flood to erode the bank, thereby preventing the bank which is partially collapsed from continuously collapsing under the scouring of the flood.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering and engineering emergency, in particular to a bank geotextile protection structure and a bank geotextile protection system.
Background
The bank is an important building for resisting flood disasters along a river zone, but is eroded and washed by flood water flow in flood season to cause bank destruction. Flood disasters seriously threaten the life and property safety of vast people, and especially, when the river water level rises due to long-time large-area rainfall and the bank is locally collapsed, if the bank is not repaired in time, immeasurable serious loss is caused once the bank is collapsed.
At present, the emergency protection of bank collapse mainly takes slope protection and foundation fixation as main parts to prevent the occurrence of bank collapse accidents. The main method comprises the following steps: and throwing weight such as impact-resistant tetrahedral cutoff stones or piled reinforcement gabions on the water-facing side of the collapse part to form a temporary bank, and resisting continuous scouring of the bank by flood to prevent the bank from continuously collapsing.
The bank collapse emergency repair method consumes large manpower and financial resources, has long construction period, needs large-scale hoisting machinery to participate in hoisting, and has certain requirements on operation space. If the bank is deep, heavy objects such as impact-resistant tetrahedral cutoff stones or stacked steel reinforcement gabions need to be stacked and thrown, often because the river bottom ground is uneven, or the heavy objects thrown first are not laid flat under the water flow impact, so that the stacking of the heavy objects on the upper portion of the river bottom ground is influenced, the temporary bank can be stacked only in a large-area throwing mode of a plurality of heavy objects, the temporary bank cannot be quickly constructed, the continuous flushing of the bank by flood is prevented, and the huge economic loss caused by the burst bank can be borne.
During flood, the safety of river bank is crucial, how to quickly and effectively protect the bank, resist flood scouring and prevent the bank which is locally collapsed from continuously collapsing under the flood scouring, so that the method is a key for resisting disasters and a great problem which troubles flood fighting and emergency work.
Disclosure of Invention
The invention aims to provide a bank embankment geotextile protection structure capable of resisting flood and erosion of the bank embankment.
The technical scheme adopted by the invention for solving the technical problems is as follows: the bank embankment geotextile protection structure comprises two main chains, a flexible net and a geotextile layer, wherein the two main chains are arranged in parallel, the lower end of at least one main chain is connected with a cutoff stone, and the upper end of each main chain is a fixed end for being fixed on a bank embankment; one side edge of the flexible net is fixedly connected with one main chain, the other side edge of the flexible net is fixedly connected with the other main chain, and the flexible net can be spread and opened by the two main chains; the geotextile layer is laid on the flexible net in an attached manner.
Further, the method comprises the following steps: and a cutoff stone is connected and arranged at the lower end of only one main chain.
Further, the method comprises the following steps: the flexible net is a flexible steel wire net.
Further, the method comprises the following steps: the geotextile layer is connected with the flexible net through the lacing.
In addition, the invention also provides a bank geotextile protection system, which adopts the bank geotextile protection structure provided by the invention, the bank geotextile protection structure is sequentially provided with at least two in the direction of water flow along a river channel, the lower end of a main chain of each bank geotextile protection structure is lowered down along a side slope of the bank close to water side, the upper ends of the main chains are respectively fixed on the bank through corresponding fixtures, and the main chain provided with a cut-off stone is connected in the same bank geotextile protection structure and is positioned at the upstream of the other main chain; and in two adjacent bank geotextile protective structures, the edge of the geotextile layer in the upstream bank geotextile protective structure is partially overlapped with the edge of the geotextile layer in the downstream bank geotextile protective structure.
Further, the method comprises the following steps: one section of the bank is a bank local collapse area, and at least the bank in the bank local collapse area and an area immediately upstream of the bank local collapse area are completely covered by a geotextile layer.
The invention has the beneficial effects that: the bank embankment geotextile protective structure can tightly attach the geotextile layer to the bank embankment which collapses by means of the water pressure of the water body, so that the bank embankment geotextile protective structure has the effect of resisting flood to erode the bank embankment, thereby preventing the bank embankment which partially collapses from continuously collapsing under the scouring of flood and preventing the occurrence of a bank breaking disaster. The bank dike geotextile protection system is disclosed; the bank embankment geotextile protective structures are sequentially spliced to cover the whole collapsed bank embankment part, and the effectiveness of the overlapping part of the adjacent bank embankment geotextile protective structures can be reliably guaranteed by means of the overlapping action of the corresponding main chains at the edges of the geotextile layers, so that the bank embankment geotextile protective structures can be effectively prevented from being separated; ensuring effective coverage of the bank.
Drawings
Fig. 1 is a front view of a single embankment geotextile containment structure;
fig. 2 is a schematic view after a plurality of bank embankment geotextile protective structures are installed on the bank embankments and local collapse zones;
fig. 3 is a schematic diagram of the bank embankment geotextile protective structure installed behind the bank embankment;
FIG. 4 is an enlarged view of a portion A of FIG. 2;
labeled as: the main chain 1, 1-1, 1-2, the flexible net 2, the geotextile layer 3, 3-1, 3-2, the cut-off stone 4, the bank 5, the bank local collapse area 51, the river water flow direction 6 and the fixture 7.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
It should be noted that, if there are directional indication terms, such as the terms of direction and orientation, above, below, left, right, front and back, in the present invention, for facilitating the description of the relative positional relationship between the components, the absolute position that is not the positional relationship between the related components and the components is specifically referred to, and is only used for explaining the relative positional relationship and the motion situation between the components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly. When the present invention relates to a number, such as "a plurality", "several", etc., two or more than two are specifically referred to.
As shown in fig. 1, the geotextile protection structure for a bank according to the present invention comprises two main chains 1, a flexible net 2 and a geotextile layer 3, wherein the two main chains 1 are arranged in parallel, and at least the lower end of one of the main chains 1 is connected with a cut-off stone 4, and the upper end of each main chain 1 is a fixed end for being fixed on a bank 5; one side edge of the flexible net 2 is fixedly connected with one of the main chains 1, the other side edge of the flexible net 2 is fixedly connected with the other main chain 1, and the flexible net 2 can be spread by the two main chains 1; and the geotextile layer 3 is laid on the flexible net 2 in an attached manner.
The main chain 1 may preferably be a heavy chain structure to ensure a certain stability after being laid down in a river, so as to prevent the main chain from being shaken by water current. The effect of main chain 1 is mainly used for carrying out stretch-draw location to the both sides border of flexible net 2 and geotechnological cloth layer 3 to in the descending through two main chains 1, lay the back tiling to bank 5 corresponding domatic after opening whole flexible net 2 and geotechnological cloth layer 3 together. Meanwhile, the main chain 1 can play a better positioning role for the main chain 1 on one hand through the intercepting stone 4 at the bottom end of the main chain, and the main chain 1 on the other hand can also play a traction anti-impact effect for the intercepting stone 4 to prevent the intercepting stone 4 from being washed away.
The flexible net 2 is mainly used for supporting and pulling the geotextile layer 3 so as to ensure that the geotextile layer 3 is effectively spread. More specifically, the connection between the geotextile layer 3 and the flexible net 2 can be connected by a lace.
The geotextile layer 3 is used for being tiled on a side slope corresponding to the bank 5 so as to play a role in preventing scouring and erosion; such as a bank structure for avoiding direct impact of water flow against and erosion of the local collapse zone 51 of the bank.
More specifically, the lower end of one main chain 1 can be provided with the cutoff stone 4 in a connecting way; as shown in the schematic view of fig. 1, a cutoff stone 4 is provided only at the lower end of the left main chain 1.
More specifically, the flexible mesh 2 may be provided as a flexible steel mesh. Like this, flexible net 2 self has stronger structural strength, can play the effective support to geotechnological cloth layer 3, and the wire net has better flexibility simultaneously, can improve the effect that geotechnological cloth layer 3 pasted on bank 5 surfaces.
In addition, the invention also provides a bank geotextile protection system, which comprises the bank geotextile protection structure provided by the invention, wherein at least two bank geotextile protection structures are sequentially arranged along the water flow direction 6 of the river channel, and the specific number can be reasonably set according to the length distance of the bank 5 to be actually protected along the water flow direction 6 of the river channel; the lower end of a main chain 1 of each bank embankment geotextile protection structure is lowered along the side slope of the bank embankment 5 close to the water side, namely, the cutoff stone 4 is lowered to the position of the toe of the side slope of the bank embankment 5, and meanwhile, the main chain 1 is arranged along the side slope in a pasting mode, so that the effect of pasting the geotextile layer 3 and the flexible net 2 on the side slope can be improved; the upper ends of the main chains 1 are respectively fixed on the bank 5 through corresponding fixed objects 7, and the fixed objects 7 can be concrete, rock blocks or steel pipe piles and the like; the main chain 1 provided with the cutoff stone 4 is connected in the same bank geotextile protective structure and is positioned at the upstream of the other main chain 1, so that the positioning effect of the upstream side edge of each bank geotextile protective structure is improved; in two adjacent bank geotextile protective structures, the edge of the geotextile layer 3 in the upstream bank geotextile protective structure is partially overlapped to the edge of the geotextile layer 3 in the downstream bank geotextile protective structure; therefore, the condition that river water permeates into the bank 5 behind the geotextile layer from the lap joint position can be reduced by the stacking arrangement; as shown in the schematic diagram of fig. 4, the edge of the upstream geotextile layer 3-1 overlaps the edge of the downstream geotextile layer 3-2, and the main chain 1-1 connected to the upstream geotextile layer 3-1 overlaps the downstream geotextile layer 3-2 and is located downstream of the main chain 1-2 connected to the downstream geotextile layer 3-2; thus, the turning-over function of the water flow to the geotextile layer 3 can be avoided; the application effect of the geotextile layer 3 is improved.
More specifically, the geotextile protection system for a bank in the present invention is mainly used for a local collapse situation of the bank 5, that is, a local collapse zone 51 of the bank is formed at one section of the bank 5, and the local collapse zone 51 of the bank needs to be protected. Therefore, in the case of the bank local collapse area 51, the bank 5 in at least the bank local collapse area 51 and a section of the area immediately upstream of the bank local collapse area 51 is entirely covered with the geotextile layer 3 in the present invention, so as to ensure that the entire bank local collapse area 51 can entirely cover the geotextile layer 3.
Claims (6)
1. Bank dyke geotechnological cloth protective structure, its characterized in that: the device comprises two main chains (1), a flexible net (2) and a geotextile layer (3), wherein the two main chains (1) are arranged in parallel, a cutoff stone (4) is connected and arranged at the lower end of at least one main chain (1), and the upper end of each main chain (1) is a fixed end which is used for being fixed on a bank (5); one side edge of the flexible net (2) is fixedly connected with one main chain (1), the other side edge of the flexible net (2) is fixedly connected with the other main chain (1), and the flexible net (2) can be spread and unfolded through the two main chains (1); the geotextile layer (3) is laid on the flexible net (2) in an attached manner.
2. The geotextile protective structure of claim 1, wherein: a cutoff stone (4) is connected and arranged at the lower end of only one main chain (1).
3. The geotextile protective structure of claim 1, wherein: the flexible net (2) is a flexible steel wire net.
4. The geotextile protective structure of any one of claims 1 to 3, wherein: the geotextile layer (3) is connected with the flexible net (2) through a lace.
5. A bank geotextile protection system comprising the bank geotextile protection structure of any one of claims 1 to 4, wherein: the bank geotextile protective structures are sequentially provided with at least two main chains (1) along the water flow direction (6), the lower end of each main chain (1) of each bank geotextile protective structure is lowered along the side slope of the bank (5) close to the water, the upper ends of the main chains (1) are respectively fixed on the bank (5) through corresponding fixtures (7), and the main chain (1) provided with a cut-off stone (4) in the same bank geotextile protective structure is positioned at the upstream of the other main chain (1); and in two adjacent bank geotextile protective structures, the edge part of the geotextile layer (3) in the upstream bank geotextile protective structure is overlapped with the edge of the geotextile layer (3) in the downstream bank geotextile protective structure.
6. The shore geotextile containment system of claim 5, wherein: one section of the bank (5) is a bank local collapse area (51), and at least the bank (5) in the bank local collapse area (51) and an area immediately upstream of the bank local collapse area (51) is completely covered by the geotextile layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110152707.4A CN112942243A (en) | 2021-02-03 | 2021-02-03 | Bank dyke geotechnical cloth protective structure and bank dyke geotechnical cloth protective system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110152707.4A CN112942243A (en) | 2021-02-03 | 2021-02-03 | Bank dyke geotechnical cloth protective structure and bank dyke geotechnical cloth protective system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112942243A true CN112942243A (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110152707.4A Pending CN112942243A (en) | 2021-02-03 | 2021-02-03 | Bank dyke geotechnical cloth protective structure and bank dyke geotechnical cloth protective system |
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| Country | Link |
|---|---|
| CN (1) | CN112942243A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2767343A1 (en) * | 1997-08-13 | 1999-02-19 | Bidim Geosynthetics Sa | Geotextile mat for protecting soil against erosion |
| CN106677119A (en) * | 2015-11-05 | 2017-05-17 | 华蓥市双河小学 | Ecological slope protection structure |
| CN110578333A (en) * | 2019-08-12 | 2019-12-17 | 安徽国祯环卫科技有限公司 | temporary slope supporting device for garbage pile excavation and construction method thereof |
-
2021
- 2021-02-03 CN CN202110152707.4A patent/CN112942243A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2767343A1 (en) * | 1997-08-13 | 1999-02-19 | Bidim Geosynthetics Sa | Geotextile mat for protecting soil against erosion |
| CN106677119A (en) * | 2015-11-05 | 2017-05-17 | 华蓥市双河小学 | Ecological slope protection structure |
| CN110578333A (en) * | 2019-08-12 | 2019-12-17 | 安徽国祯环卫科技有限公司 | temporary slope supporting device for garbage pile excavation and construction method thereof |
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Application publication date: 20210611 |