A construction method for a revetment structure using double-layer geotextile bags

Abstract

The present invention discloses a method for constructing a revetment structure using a double-layer mold bag. A wave barrier is provided at the top of the bank slope, a recessed area is excavated at the bottom of the bank slope, and a double-layer mold bag is laid on the bank slope. The double-layer mold bag has two filling chambers, an upper layer and a lower layer. The lower layer filling chamber is filled with coral mortar, and the upper layer filling chamber is filled with coral sand concrete. This double-layer filling chamber mold bag structure can ensure high strength of the revetment surface because its upper filling chamber is filled with coral sand concrete. In addition, because its lower filling chamber is only filled with coral mortar, it can save a large amount of concrete compared to existing mold bags with a single-layer filling space, fully utilizing the abundant local coral sand resources on the coast, lowering costs, and facilitating construction.

Description

Technical Field

[0001] This invention belongs to the field of bank protection technology, and in particular, it is a construction method for bank protection structures using double-layer geotextile bags. Background Technology

[0002] Bank protection structures are engineering structures that protect the edges of water bodies such as coastlines and riverbanks. They prevent riverbanks or coastlines from collapsing due to erosion by water currents and waves. For example, at river bends, the erosion force of the river water on the concave bank is strong; bank protection projects can reinforce the concave bank and reduce land loss. They come in various forms, including sloping bank protection structures made of piled stones and vertical bank protection structures built with concrete.

[0003] Traditional shoreline protection structures involve laying concrete mortar bags and stones on the shore slope to achieve shoreline protection. This traditional method requires a large amount of concrete and natural stone, resulting in high costs and a long construction period. Moreover, this traditional method is not suitable for coastal areas and island / reef areas lacking concrete and stone resources. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a construction method for a revetment structure using double-layer geotextile bags.

[0005] This invention is achieved through the following technical solution:

[0006] A construction method for a revetment structure using double-layer geotextile bags includes the following steps:

[0007] Step 1: Level and smooth the slope surface of the bank.

[0008] Step 2: Construct a wave-breaking wall at the top of the bank slope and excavate a recessed area at the bottom of the bank slope;

[0009] Step 3: Lay double-layer geotextile bags on the bank slope, so that the top of the double-layer geotextile bags extends to the front edge of the wave-breaking wall and the bottom of the double-layer geotextile bags extends to the groove area at the bottom of the bank slope.

[0010] The double-layer molded bag includes a top surface, a middle surface, and a bottom surface. A bottom filling cavity is formed between the bottom surface and the middle surface, and an upper filling cavity is formed between the top surface and the middle surface. A grid array formed by transverse and longitudinal reinforcing ribs is provided on the top surface, the middle surface, and the bottom surface. A first vertical reinforcing rib is connected between the intersection of the grid array on the bottom surface and the intersection of the grid array on the middle surface, and a second vertical reinforcing rib is connected between the intersection of the grid array on the top surface and the intersection of the grid array on the middle surface.

[0011] Step 4: First, fill the bottom filling cavity of the double-layer formwork bag with coral mortar. After the bottom filling cavity is filled, fill the top filling cavity of the double-layer formwork bag with coral sand concrete.

[0012] Step 5: After filling, lay boulders in the grooved area at the bottom of the bank slope so that the bottom of the double-layered geotextile bag is stably pressed into the boulders.

[0013] In the above technical solution, geotextile is also laid between the bank slope and the double-layer geotextile bag.

[0014] In the above technical solution, a first filling port is provided on the top surface of the double-layer mold bag for filling coral sand concrete into the upper filling cavity; a second filling port is provided on the middle surface of the double-layer mold bag for filling coral mortar into the lower filling cavity.

[0015] In the above technical solution, a first filling port is set directly above the second filling port. In this way, when coral mortar is filled into the bottom filling cavity, the pump pipe can pass through the first filling port and then reach the second filling port.

[0016] In the above technical solution, a side filling cavity is provided at the bottom of the double-layer formwork bag. This side filling cavity is connected to the upper filling cavity, so that both the side filling cavity and the upper filling cavity are filled with coral sand concrete. In this way, due to the presence of this side filling cavity, the bottom of the double-layer formwork bag is filled with coral sand concrete, which can improve the stability of the bottom of the double-layer formwork bag.

[0017] In the above technical solution, the wave-breaking wall is made of plain concrete or coral sand concrete.

[0018] In the above technical solution, the stone blocks are made of plain concrete or coral sand concrete.

[0019] The advantages and beneficial effects of this invention are as follows:

[0020] This invention employs a double-layered geotextile structure with two filling chambers: an upper chamber and a lower chamber. The lower chamber is filled with coral sand mortar, while the upper chamber is filled with coral sand concrete. This double-layered geotextile structure ensures high strength of the slope protection surface because the upper chamber is filled with coral sand concrete. Furthermore, since the lower chamber is filled only with coral sand mortar (eliminating the need for concrete), it saves a significant amount of concrete and aggregate compared to existing single-layered geotextile structures (for constructing revetment structures of the same thickness). It also fully utilizes the abundant local coral sand resources, resulting in lower costs and easier construction. Attached Figure Description

[0021] Figure 1This is a schematic diagram of one embodiment of the revetment structure based on double-layer molded bags of the present invention.

[0022] Figure 2 This is a schematic diagram of another embodiment of the revetment structure based on double-layered molded bags of the present invention.

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of a double-layered molded bag.

[0024] Figure 4 This is a schematic diagram of the structure of a double-layer molded bag.

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of a double-layered molded bag.

[0026] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0028] A construction method for a revetment structure using double-layer geotextile bags is provided in the appendix. Figure 1 This includes the following steps:

[0029] Step 1: Level and smooth the slope surface of the bank slope. The slope ratio must not be steeper than the designed slope. If the flatness does not meet the requirements, gravel or small sandbags can be laid to level it.

[0030] Step 2: Lay 1-3 layers of geotextile 5 on the bank slope, construct a wave-breaking wall 1 at the top of the bank slope, and excavate a recessed area 2 at the bottom of the bank slope. The wave-breaking wall 1 is made of plain concrete or coral sand concrete.

[0031] Step 3: Lay double-layered geotextile bags 3 on the bank slope, so that the top of the double-layered geotextile bags 3 extends to the front edge of the wave-breaking wall 1 and the bottom of the double-layered geotextile bags 3 extends to the groove area 2 at the bottom of the bank slope.

[0032] See appendix Figure 3 and attached Figure 4The double-layer molded bag 3 includes a top surface 301, a middle surface 302, and a bottom surface 303. A bottom filling cavity a is formed between the bottom surface 303 and the middle surface 302, and an upper filling cavity b is formed between the top surface 301 and the middle surface 302. A grid array formed by transverse reinforcing ribs 304 and longitudinal reinforcing ribs 305 is provided on the top surface 301, the middle surface 302, and the bottom surface 303. A first vertical reinforcing rib 306 connects the intersection of the grid array on the bottom surface 303 and the intersection of the grid array on the middle surface 302 (i.e., one end of the first vertical reinforcing rib 306 is connected to the bottom surface). At the intersection of the transverse and longitudinal reinforcing ribs of the 303, the other end of the first vertical reinforcing rib 306 is connected to the intersection of the transverse and longitudinal reinforcing ribs of the middle surface 302 of the mold bag. A second vertical reinforcing rib 307 is connected between the intersection of the grid array on the top surface 301 of the mold bag and the intersection of the grid array on the middle surface 302 of the mold bag (that is, one end of the second vertical reinforcing rib 307 is connected to the intersection of the transverse and longitudinal reinforcing ribs of the top surface 301 of the mold bag, and the other end of the second vertical reinforcing rib 307 is connected to the intersection of the transverse and longitudinal reinforcing ribs of the middle surface 302 of the mold bag). Coral mortar 31 is filled into the bottom filling cavity a of the double-layer mold bag 3 (see Appendix). Figure 1 Coral sand concrete 32 (see Appendix) is filled into the upper filling cavity b of the double-layered manhole bag 3. Figure 1 ).

[0033] See appendix Figure 5 A first filling port 308 is provided on the top surface 301 of the double-layered formwork bag 3 for filling coral sand concrete into the upper filling cavity b; a second filling port 309 is provided on the middle surface 302 of the double-layered formwork bag 3 for filling coral mortar into the lower filling cavity a. Furthermore, it should be noted that the first filling port 308 is located directly above the second filling port 309. This ensures that when filling coral mortar into the lower filling cavity a, the pump pipe can pass through the first filling port 308 and then reach the second filling port 309 to fill the lower filling cavity a with coral mortar.

[0034] Furthermore, as a preferred option, see the appendix. Figure 2 A side filling cavity c is provided at the bottom of the double-layer formwork bag 3. This side filling cavity c is connected to the upper filling cavity b, so that both the side filling cavity c and the upper filling cavity b are filled with coral sand concrete 32. Thus, due to the presence of this side filling cavity c, the bottom perimeter of the double-layer formwork bag 3 is filled with coral sand concrete. Coral sand concrete has a higher strength than coral mortar, therefore, compared to the attached... Figure 1 The proposed solution can improve the stability of the bottom of the double-layer molded bag 3.

[0035] Step 4: First, fill the bottom filling cavity a of the double-layer formwork bag 3 with coral mortar. After filling the bottom filling cavity a, let it stand for 1-3 days. Then, fill the upper filling cavity b of the double-layer formwork bag 3 with coral sand concrete. During the filling process, it should be carried out from bottom to top, compartment by compartment. The pump pipe and the filling port of the formwork bag should be securely fastened. When the pump pipe is inserted into the filling port, it is advisable to set a pressure-reducing baffle at the pump pipe opening. The stress on the formwork bag should be observed during the filling process.

[0036] Step 5: After filling, lay boulders 4 in the grooved area at the bottom of the bank slope to stably press the bottom of the double-layered formwork bag 3 into the boulders 4. The boulders 4 are made of plain concrete or coral sand concrete.

[0037] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A construction method for a revetment structure using double-layer geotextile bags, characterized in that, Includes the following steps: Step 1: Level and smooth the slope surface of the bank. Step 2: Construct a wave-breaking wall at the top of the bank slope and excavate a recessed area at the bottom of the bank slope; Step 3: Lay double-layer geotextile bags on the bank slope, so that the top of the double-layer geotextile bags extends to the front edge of the wave-breaking wall and the bottom of the double-layer geotextile bags extends to the groove area at the bottom of the bank slope. The double-layer molded bag includes a top surface, a middle surface, and a bottom surface. The top surface, middle surface, and bottom surface are connected around their perimeter to form a four-sided cover. A bottom filling cavity is formed between the bottom surface and the middle surface, and an upper filling cavity is formed between the top surface and the middle surface. A grid array formed by transverse and longitudinal reinforcing ribs is provided on the top surface, middle surface, and bottom surface. A first vertical reinforcing rib is connected between the intersection of the grid array on the bottom surface and the intersection of the grid array on the middle surface, and a second vertical reinforcing rib is connected between the intersection of the grid array on the top surface and the intersection of the grid array on the middle surface. Step 4: First, fill the bottom filling cavity of the double-layer formwork bag with coral mortar. After the bottom filling cavity is filled, fill the top filling cavity of the double-layer formwork bag with coral sand concrete. Step 5: After filling, lay boulders in the grooved area at the bottom of the bank slope so that the bottom of the double-layered geotextile bag is stably pressed into the boulders.

2. The construction method for a revetment structure using double-layer geotextile bags according to claim 1, characterized in that: Geotextile was also laid between the bank slope and the double-layer geotextile bag.

3. The construction method for a revetment structure using double-layer geotextile bags according to claim 1, characterized in that: A first filling port is provided on the top surface of the double-layered formwork bag for filling coral sand concrete into the upper filling cavity; a second filling port is provided on the middle surface of the double-layered formwork bag for filling coral mortar into the lower filling cavity.

4. The construction method for a revetment structure using double-layer geotextile bags according to claim 1, characterized in that: A first filling port is set directly above the second filling port; when coral mortar is filled into the bottom filling chamber, the pump pipe passes through the first filling port and then reaches the second filling port.

5. The construction method for a revetment structure using double-layer geotextile bags according to claim 1, characterized in that: A side filling cavity is provided at the bottom of the double-layer mold bag. This side filling cavity is connected to the upper filling cavity, so that both the side filling cavity and the upper filling cavity are filled with coral sand concrete.

6. The construction method for a revetment structure using double-layer geotextile bags according to claim 1, characterized in that: The wave-breaking wall is made of plain concrete or coral sand concrete.

7. The construction method for a revetment structure using double-layer geotextile bags according to claim 1, characterized in that: The boulders are made of plain concrete or coral sand concrete.

Images