Bank protection structure construction method adopting double-layer mold bags

Abstract

The invention discloses a bank protection structure construction method adopting a double-layer mold bag, which comprises the following steps of: arranging a wave wall at the top of a bank slope, digging a groove area at the bottom of the bank slope, paving the double-layer mold bag on the bank slope, arranging an upper-layer filling cavity and a bottom-layer filling cavity in the double-layer mold bag, filling coral mortar in the bottom-layer filling cavity, and filling coral mortar in the bottom-layer filling cavity; and the upper-layer filling cavity is filled with coral sand concrete. According to the double-layer filling cavity mold bag structure, the coral sand concrete is filled in the upper-layer filling cavity, so that the higher strength of a slope protection surface can be ensured; besides, the bottom layer filling cavity is only filled with coral mortar, so that compared with an existing mold bag with a single-layer filling space, a large amount of concrete can be saved, local rich coral sand resources of the coast can be fully utilized, the cost is lower, and construction is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of bank protection, in particular to a bank protection structure construction method using a double-layer mold bag. Background Art

[0002] Bank protection is an engineering structure that protects the edge of water bodies such as coasts and riverbanks. It can prevent the riverbank or coast from collapsing due to water erosion, wind and wave erosion, etc. For example, at the bend of a river, the river water has a strong scouring force on the concave bank, and bank protection projects can reinforce the concave bank and reduce land loss. There are various forms, such as sloped bank protection built with stones, and upright bank protection built with concrete.

[0003] The traditional bank protection structure is to lay concrete mortar bags and stones on the bank slope to achieve the purpose of bank protection. This traditional bank protection method requires a large amount of concrete and natural stones, which is costly and has a long construction period. Moreover, this traditional bank protection method is not suitable for coastal areas and island reef areas where concrete and stones are scarce. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for constructing a bank protection structure using a double-layer mold bag.

[0005] The present invention is achieved through the following technical solutions:

[0006] A method for constructing a revetment structure using a double-layer mold bag comprises the following steps:

[0007] Step 1, leveling and sloping the bank slope;

[0008] Step 2, constructing a wave-blocking wall at the top of the bank slope and digging a recessed area at the bottom of the bank slope;

[0009] Step 3, laying a double-layer mold bag on the bank slope, so that the top of the double-layer mold bag extends to the front position of the wave-breaking wall, and the bottom of the double-layer mold bag extends to the groove area at the bottom of the bank slope;

[0010] The double-layer mold bag comprises a mold bag top surface, a mold bag middle surface and a mold bag bottom surface, a bottom filling cavity is formed between the mold bag bottom surface and the mold bag middle surface, and an upper filling cavity is formed between the mold bag top surface and the mold bag middle surface; a square grid array formed by transverse reinforcement ribs and longitudinal reinforcement ribs is arranged on the mold bag top surface, the mold bag middle surface and the mold bag bottom surface, and a first vertical reinforcement rib is connected between the intersection points of the square grid array on the mold bag bottom surface and the intersection points of the square grid array on the mold bag middle surface, and a second vertical reinforcement rib is connected between the intersection points of the square grid array on the mold bag top surface and the intersection points of the square grid array on the mold bag middle surface;

[0011] Step 4, first fill the coral mortar into the bottom filling cavity of the double-layer mold bag, and then fill the coral sand concrete into the upper filling cavity of the double-layer mold bag after the bottom filling cavity is filled;

[0012] Step 5, after the filling is completed, stones are laid in the groove area at the bottom of the slope so that the bottom of the double-layer mold bag is stably pressed in the stones.

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

[0014] In the above technical solution, a first filling port is arranged on the top surface of the double-layer mold bag, which is used to fill coral sand concrete into the upper filling cavity; a second filling port is arranged on the middle surface of the double-layer mold bag, which is used to fill coral mortar into the bottom filling cavity.

[0015] In the above technical solution, the first filling port is arranged directly above the second filling port, so that when the coral mortar is filled into the bottom filling cavity, the pump tube 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 mold bag, and the side filling cavity is connected with the upper filling cavity, so that the side filling cavity and the upper filling cavity are both filled with coral sand concrete. In this way, due to the existence of the side filling cavity, the bottom of the double-layer mold bag is filled with coral sand concrete, which can improve the stability of the bottom of the double-layer mold 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 blocks are made of plain concrete or coral sand concrete.

[0019] The advantages and beneficial effects of the present invention are:

[0020] The present invention adopts a double-layer mold bag structure, which has two filling cavities, an upper layer and a bottom layer, inside the double-layer mold bag. The bottom filling cavity is filled with coral mortar, and the upper filling cavity is filled with coral sand concrete. This double-layer filling cavity mold bag structure can ensure a high strength of the slope protection surface because its upper filling cavity is filled with coral sand concrete; in addition, because its bottom filling cavity is only filled with coral mortar (no concrete is required), compared with the existing single-layer filling space mold bag (constructing a revetment structure of the same thickness), it can save a lot of concrete and stone, fully utilize the rich local coral sand resources on the coast, lower cost, and convenient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of an embodiment of the revetment structure based on double-layer mold bags of the present invention.

[0022] Figure 2 It is a schematic diagram of another embodiment of the revetment structure based on double-layer mold bags of the present invention.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of a double-layer mold bag.

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

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of a double-layer mold bag.

[0026] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with specific embodiments.

[0028] A construction method of a revetment structure using a double-layer mold bag, see attached Figure 1 , including the following steps:

[0029] Step 1: Level the slope of the bank slope. The slope ratio shall not be steeper than the designed slope. If the flatness does not meet the requirements, gravel or small sand bags can be laid for leveling.

[0030] Step 2: lay 1-3 layers of geotextile 5 on the bank slope, build a wave-blocking wall 1 on the top of the bank slope, and dig a groove area 2 at the bottom of the bank slope. The wave-blocking wall 1 is made of plain concrete or coral sand concrete.

[0031] Step 3: Lay a double-layer mold bag 3 on the bank slope, so that the top of the double-layer mold bag 3 extends to the front position of the wave-breaking wall 1, and the bottom of the double-layer mold bag 3 extends to the groove area 2 at the bottom of the bank slope.

[0032] See attached Figure 3 and attached Figure 4The double-layer mold bag 3 includes a mold bag top surface 301, a mold bag middle surface 302 and a mold bag bottom surface 303. A bottom filling cavity a is formed between the mold bag bottom surface 303 and the mold bag middle surface 302, and an upper filling cavity b is formed between the mold bag top surface 301 and the mold bag middle surface 302. A square grid array formed by transverse reinforcement ribs 304 and longitudinal reinforcement ribs 305 is arranged on the mold bag top surface 301, the mold bag middle surface 302 and the mold bag bottom surface 303, and a first vertical reinforcement rib 306 is connected between the intersection of the square grid array of the mold bag bottom surface 303 and the intersection of the square grid array of the mold bag middle surface 302 (that is, one end of the first vertical reinforcement rib 306 is connected to the bottom surface of the mold bag The second vertical reinforcement rib 307 is connected between the intersection of the square array on the top surface 301 of the mold bag and the intersection of the square array on the middle surface 302 of the mold bag (that is, one end of the second vertical reinforcement rib 307 is connected to the intersection of the transverse reinforcement rib and the longitudinal reinforcement rib on the top surface 301 of the mold bag, and the other end of the second vertical reinforcement rib 307 is connected to the intersection of the transverse reinforcement rib and the longitudinal reinforcement rib on the middle surface 302 of the mold bag); the coral mortar 31 is filled in the bottom filling cavity a of the double-layer mold bag 3 (see attached Figure 1 ), the upper filling cavity b of the double-layer mold bag 3 is filled with coral sand concrete 32 (see attached Figure 1 ).

[0033] See attached Figure 5 A first filling port 308 is provided on the top surface 301 of the double-layer mold bag 3, which is used to fill the upper filling cavity b with coral sand concrete; a second filling port 309 is provided on the middle surface 302 of the double-layer mold bag 3, which is used to fill the bottom filling cavity a with coral mortar. In addition, it should be noted that the first filling port 308 is provided just above the second filling port 309, so that when the bottom filling cavity a is filled with coral mortar, the pump tube can pass through the first filling port 308 and then reach the second filling port 309, so that the coral mortar can be filled into the bottom filling cavity a.

[0034] Further, as preferred, see the attached Figure 2 A side filling chamber c is provided at the bottom of the double-layer mold bag 3, and the side filling chamber c is connected to the upper filling chamber b, so that the side filling chamber c and the upper filling chamber b are both filled with coral sand concrete 32. In this way, due to the existence of the side filling chamber c, the bottom of the double-layer mold bag 3 is filled with coral sand concrete. The strength of coral sand concrete is higher than that of coral mortar. Therefore, compared with the attached Figure 1 The solution can improve the stability of the bottom of the double-layer mold bag 3.

[0035] Step 4, first fill the coral mortar into the bottom filling cavity a of the double-layer mold bag 3, and after the bottom filling cavity a is filled, let it stand for 1-3 days; then fill the coral sand concrete into the upper filling cavity b of the double-layer mold bag 3. During the filling process, it should be done from bottom to top, cell by cell, and the pump pipe and the filling port of the mold bag should be tied tightly. When the pump pipe is inserted into the filling port, it is advisable to set a shock-reducing baffle at the pump pipe port, and the stress of the mold bag should be observed during the filling process.

[0036] Step 5, after the filling is completed, the block stone 4 is laid in the groove area at the bottom of the bank slope, so that the bottom of the double-layer mold bag 3 is stably pressed in the block stone 4. The block stone 4 is made of plain concrete or coral sand concrete.

[0037] The present invention is described above by way of example. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by those skilled in the art without inventive effort falls within the protection scope of the present invention.

Claims

1. A method for constructing a revetment structure using a double-layer mold bag, characterized in that: The following steps are involved: Step 1, leveling and sloping the bank slope; Step 2, constructing a wave-blocking wall at the top of the bank slope and digging a recessed area at the bottom of the bank slope; Step 3, laying a double-layer mold bag on the bank slope, so that the top of the double-layer mold bag extends to the front position of the wave-breaking wall, and the bottom of the double-layer mold bag extends to the groove area at the bottom of the bank slope; The double-layer mold bag comprises a mold bag top surface, a mold bag middle surface and a mold bag bottom surface, the top surface, the mold bag middle surface and the mold bag bottom surface are connected around to form a surrounding cover, a bottom filling cavity is formed between the mold bag bottom surface and the mold bag middle surface, and an upper filling cavity is formed between the mold bag top surface and the mold bag middle surface; a square grid array formed by transverse reinforcement ribs and longitudinal reinforcement ribs is arranged on the mold bag top surface, the mold bag middle surface and the mold bag bottom surface, and a first vertical reinforcement rib is connected between the intersection points of the square grid array on the mold bag bottom surface and the intersection points of the square grid array on the mold bag middle surface, and a second vertical reinforcement rib is connected between the intersection points of the square grid array on the mold bag top surface and the intersection points of the square grid array on the mold bag middle surface; Step 4, first fill the coral mortar into the bottom filling cavity of the double-layer mold bag, and then fill the coral sand concrete into the upper filling cavity of the double-layer mold bag after the bottom filling cavity is filled; Step 5, after the filling is completed, stones are laid in the groove area at the bottom of the slope so that the bottom of the double-layer mold bag is stably pressed in the stones.

2. The method for constructing a revetment structure using a double-layer mold bag according to claim 1 is characterized in that: Geotextile is also laid between the bank slope and the double-layer mold bag.

3. The method for constructing a revetment structure using a double-layer mold bag according to claim 1 is characterized in that: A first filling port is arranged 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 arranged on the middle surface of the double-layer mold bag for filling coral mortar into the bottom filling cavity.

4. The method for constructing a revetment structure using a double-layer mold bag according to claim 1 is characterized in that: A first filling port is arranged just above the second filling port; when the coral mortar is filled into the bottom filling cavity, the pump pipe passes through the first filling port and then reaches the second filling port.

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

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

7. The method for constructing a revetment structure using a double-layer mold bag according to claim 1 is characterized in that: The blocks are made of plain concrete or coral sand concrete.

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