Geotextile bag anti-collision debris flow drainage and guide groove suitable for bank slope type wharf

Abstract

The utility model provides a geotextile bag anti-collision debris flow drainage groove suitable for a bank slope type wharf, the drainage groove is arranged on a mountain of the bank slope type wharf, a groove bottom plate is arranged at the bottom of the drainage groove, side walls are arranged on two sides of the groove bottom plate, inclined wall bodies are arranged on the wall surfaces of the side walls opposite to the side of the groove bottom plate, and the inclined wall bodies are arranged on the inclined wall bodies. The inclined wall body inclines towards one side far away from the drainage groove relative to the height direction of the side wall, a geotextile bag lamination layer is arranged on the inclined wall body in a leaning manner, and a wall bag connecting piece which is connected with each layer of geotextile bags of the geotextile bag lamination layer and is used for limiting the geotextile bags is arranged on the inclined wall body. According to the utility model, the geotextile bag laminated layer is arranged along the whole drainage groove and is fixed on the inclined edge of the side wall, and the speed control belt is arranged in the middle of the drainage groove according to the characteristic that the speed of debris flow in the drainage groove is fastest in the middle and gradually reduced towards the two ends, so that the drainage groove can cope with the impact of the debris flow in the drainage groove in all directions; therefore, impact damage of debris flow to the drainage groove can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of debris flow dredging and prevention engineering, and particularly relates to a geotextile bag anti-collision debris flow drainage trough applicable to a bank slope type wharf. Background Art

[0002] Debris flow has a relatively large unit weight. Its particularity lies in that there are clastic soils or rocks in the fluid, making it show strong moving force, high inertia and large impact force. Debris flow disasters change the gully bed structure, and even cause the collapse of the gully bank. Therefore, a large amount of solid substances are provided for the debris flow fluid, making its destructive power continuously increase. The main measure to prevent and control debris flow disasters is to build a drainage trough. The reasonable laying of the drainage trough is of extremely important significance for regional economic development and social safety guarantee in reducing the harm of debris flow and improving the safety of buildings and traffic structures below the slope.

[0003] Debris flows in steep mountainous areas are characterized by high flow velocity and strong impact force. The drainage troughs set in these mountainous areas are more likely to be damaged, especially the side walls at both ends of the trough body. The vulnerability of the trough body has a great impact on the normal operation of the later drainage trough, and its later maintenance is difficult and the maintenance cost is high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a debris flow drainage trough that can largely avoid being damaged by solid substances in debris flow and increase its service life.

[0005] For this reason, the utility model adopts the following technical solutions:

[0006] A geotextile bag anti-collision debris flow drainage trough applicable to a bank slope type wharf. The drainage trough is arranged on the mountain body of the bank slope type wharf. A trough bottom plate is arranged at the bottom of the drainage trough. Side walls are arranged on both sides of the trough bottom plate. An inclined wall body is arranged on the wall surface of the side wall opposite to the trough bottom plate. The inclined wall body inclines away from the drainage trough in the height direction relative to the side wall. A geotextile bag stack is leaned on the inclined wall body. Wall bag connectors for connecting and limiting the geotextile bags of each layer of the geotextile bag stack are arranged on the inclined wall body to form a side protection state inside the drainage trough. The trough bottom plate is provided with a speed control belt on its upper surface along the whole length of the drainage trough to form a state of controlling the speed and passing through the debris flow in the drainage trough.

[0007] Further: Bag connectors are arranged between the upper and lower layers of geotextile bags of the geotextile bag stack.

[0008] Further: The included angle between the inclined wall body and the trough bottom plate is 100° - 120°.

[0009] Further: The speed control belt is arranged in the middle area of the trough bottom plate.

[0010] Further: The speed control belt is provided with a bevel on the side opposite to the side wall, and the bevel is inclined away from the side wall in the height direction of the speed control belt.

[0011] Further: The included angle between the bevel and the trough bottom plate is 100° - 120°.

[0012] Further: The drainage trough is successively provided with an upstream diversion area, a middle - stream diversion area, and a downstream diversion area from top to bottom on the mountain body. An upper buffer area is arranged between the upstream diversion area and the middle - stream diversion area, a lower buffer area is arranged between the middle - stream diversion area and the downstream diversion area. An inlet area is arranged at the inlet of the upstream diversion area, and an outlet area is arranged at the outlet of the downstream diversion area.

[0013] Further: The drainage trough is applicable to a bank - type wharf with a mountain slope between 0° and 45°.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, the geotextile bags are laminated and arranged along the whole length of the drainage trough and fixed on the bevel of the side wall. According to the characteristic that the debris flow speed in the drainage trough is the fastest in the middle and gradually decreases towards both ends, a speed control belt is arranged at the middle position of the drainage trough, so that the drainage trough can comprehensively cope with the impact of the debris flow therein, thereby greatly reducing the impact damage of the debris flow on the drainage trough. At the same time, by setting the drainage trough, the debris flow above the wharf is efficiently discharged into the inner river. While the wharf structure and the drainage trough are protected from debris flow disasters, the normal operation environment of the wharf operation area and the rest area is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross - sectional view of the debris flow drainage trough of the utility model;

[0017] Figure 2 It is a connection diagram of the geotextile bags of the utility model;

[0018] Figure 3 It is a side elevation view of the drainage trough and the bank - type wharf of the utility model.

[0019] The marks in the drawings are: 1 - side wall; 11 - inclined wall body; 2 - geotextile bag laminate; 21 - geotextile bag; 3 - trough bottom plate; 4 - speed control belt; 41 - bevel; 5 - wall - bag connecting piece; 6 - inter - bag connecting piece; 7 - inlet area; 8 - upstream diversion area; 9 - upper buffer area; 10 - middle - stream diversion area; 12 - downstream diversion area; 13 - outlet area; 141 - trestle between the high - water - level operation platform and the middle - water - level operation platform; 142 - trestle between the middle - water - level operation platform and the low - water - level operation platform; 15 - lower buffer area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0021] As Figures 1-3 shown, a geotextile bag anti-collision debris flow drainage channel applicable to a slope-type wharf is provided on the mountain body of the slope-type wharf. The drainage channel is provided with a channel bottom plate 3 at its bottom, and side walls 1 are arranged on both sides of the channel bottom plate 3. The side walls 1 are in the shape of a right-angled trapezoid, with their right-angled sides located outside the drainage channel. On the side wall surface of the corresponding side wall 1 relative to the channel bottom plate 3, an inclined wall body 11 is provided. The inclined wall body 11 is inclined away from the drainage channel in the height direction relative to the side wall 1. While the side wall 1 has sufficient strength, it also has the advantage of expanding the drainage capacity of the drainage channel through the inclined wall body 11; a geotextile bag stack 2 is leaned on the inclined wall body 11, and wall bag connectors 5 are provided on the inclined wall body 11 to connect and limit the geotextile bags 21 of each layer of the geotextile bag stack 2, so as to form a side protection state inside the drainage channel. Moreover, the wall bag connectors 5 can also fix the side wall 1 and the geotextile bags 21 to prevent the geotextile bags 21 from sliding into the drainage channel and causing blockage of the drainage channel; a speed control belt 4 is provided on the upper surface of the channel bottom plate 3 along the entire length of the drainage channel. The speed control belt 4 can control the maximum flow velocity of the debris flow, so as to form a state of controlling the flow velocity and passing through the drainage channel for the debris flow. And the speed control belt 4 can effectively reduce the abrasion of the debris flow on the channel bottom plate 3, making the drainage channel durable and reducing the related costs such as the later engineering maintenance of the drainage channel.

[0022] In this embodiment, the geotextile bag stack 2 is arranged along the entire length of the drainage channel, and the geotextile bag stack 2 is composed of stacked geotextile bags 21 and arranged on both sides of the drainage channel. The geotextile bags 21 are stacked from the bottom upwards along the hypotenuse of the side wall 1, which is beneficial to improving the overall and local stability of the geotextile bag stack 2. Correspondingly, the geotextile bag stack 2 is laid to the top of the side wall 1 to comprehensively protect the side walls 1 on both sides from the direct impact of the solid substances in the debris flow.

[0023] In this embodiment, the wall bag connectors 5 can ensure that a tight whole is formed between the geotextile bags and the vertical wall to resist the scouring of the debris flow. The wall bag connectors 5 can be customized and designed according to specific engineering requirements and usage environments. The types that can be adopted include the following types:

[0024] (1) Metal connectors: Such as steel bars or special metal fasteners, which are embedded in the side wall 1 and the geotextile bags 21 and connected by fasteners or welding. These metal connectors usually have high strength and durability and can withstand large tensile and compressive forces;

[0025] (2) Ropes or cables: Use high-strength ropes or cables. One end is fixed on the side wall 1, and the other end passes through the reserved holes or loop fasteners of the geotextile bags 21 and is fixed by appropriate fastening devices. This method can achieve flexible and firm connection;

[0026] (3) Geotextile connection belt: A special geotextile connection belt is used, one end of which is connected to the side wall 1 and the other end is sewn or bound to the geobag 21. This connection method utilizes the flexibility and strength of the geotextile and can adapt to the deformation of the geobag 21;

[0027] (4) Concrete anchors: holes or notches are reserved in the side wall 1, and then the anchors are fixed in the side wall 1 with concrete, and then the geobag 21 is connected to the anchors. This method can provide stronger tensile resistance.

[0028] Specifically, the geobag stack 2 is provided with inter-bag connectors 6 between the upper and lower geobag layers 21, thereby improving the stability of the geobag stack 2 and preventing the occurrence of slippage.

[0029] In this embodiment, the inter-bag connector 6 can ensure that the geobags 21 can form a stable and continuous structure during the stacking or laying process. The inter-bag connector 6 can be customized and designed according to specific engineering requirements and use environment, and the types that can be used include the following types:

[0030] (1) Plastic connectors: These connectors are usually made of high-strength plastic and are lightweight, corrosion-resistant, and easy to install. They are usually designed to pass through specific parts of adjacent geobags 21, such as edges or reserved holes, and are fixed by a locking mechanism;

[0031] (2) Ropes or cables: High-strength ropes or cables can also be used as connectors between geobags 21. They can pass through the reserved holes or loops of the geobags 21 and be fixed by knots, fasteners or special connectors. This method can adapt to the arrangement and stacking of different geobags;

[0032] (3) Geotextile connecting strips: These connecting strips are usually made of durable geotextiles with high tensile strength and abrasion resistance. They can be connected to the edge or specific parts of the geobag by sewing or hot pressing to form a continuous whole;

[0033] (4) Metal connectors: In some cases where higher strength and stability are required, metal connectors may be a better choice. These connectors are usually made of steel or aluminum and have high tensile strength and durability. They can be designed into specific shapes and sizes to suit different geobags and project requirements.

[0034] In this embodiment, the geotextile bag 21 is woven from two layers of fabric, giving it a certain strength. The geotextile bag is filled with soil or sand, and the soil can be directly picked up at the location where the drainage channel is constructed. The source of the filling material in the geotextile bag 21 is relatively rich, which is beneficial to its efficient construction and cost reduction.

[0035] Among them, the overall shape of the geotextile bag 21 is a rectangular structure with a length of 800 mm and a width of 400 mm.

[0036] As Figure 1 shown, the included angle between the inclined wall 11 and the trough bottom plate 3 is α. In order to ensure the debris flow drainage efficiency of the drainage channel and save materials, in this embodiment, α is 100°.

[0037] In this embodiment, the side wall 1 is symmetric with respect to the center line of the trough bottom plate 3 of the drainage channel. The speed control belt 4 is arranged in the middle area of the trough bottom plate 3 along its center line direction.

[0038] As Figure 1 shown, since the speed of the debris flow in the drainage channel should not be too large, the speed control belt 4 in the middle of the trough bottom plate 3 is set in an inverted U-shaped structure. It should be noted that according to the characteristic that the speed of the debris flow in the drainage channel is the fastest in the middle and gradually decreases towards both ends, the speed control belt 4 can limit the fastest speed of the debris flow in the drainage channel, thus ensuring that the debris flow can be drained orderly and smoothly.

[0039] Specifically, the speed control belt 4 is provided with an inclined side 41 on the side relative to the side wall 1, and the inclined side 41 is inclined away from the side wall 1 in the height direction of the speed control belt 4. Among them, the included angle between the inclined side 41 and the trough bottom plate 3 is β. In this embodiment, β is 100°.

[0040] In this embodiment, the drainage channel is used for debris flow prevention projects in mountainous areas where debris flows are prone to occur, and the debris flow in mountain soils contains a large amount of gravel. Therefore, protection measures need to be taken for the drainage channel project to ensure the normal operation of the drainage project. Moreover, to ensure the overall strength and stability of the drainage channel, the side wall 1, the trough bottom plate 3, and the speed control belt 4 are all made of reinforced concrete structures and are continuously cast into a whole.

[0041] At the same time, the drainage channel is applicable to debris flow prevention projects in mountainous areas where the slope rate of the mountain body is gentler than 1:1, that is, the slope of the mountain body (foot of the mountain) is between 0° and 45° for bank slope type wharves. Moreover, by restricting the inclination angle of the laying of the geotextile bag 21, it can be ensured that the geotextile bag 21 can be placed in the drainage channel without sliding. It can be understood that the geotextile bag 21 in the drainage channel can be directly replaced during post-disaster maintenance to ensure the normal use of the drainage channel.

[0042] Moreover, the depth of the drainage channel buried in the foundation soil is 0.7 times the height of the drainage channel. It should be noted that the height of the drainage channel is the distance from the bottom surface to the top surface of the bottom plate of the side wall 1.

[0043] As Figure 3 shown, the water level of the inland river terminal has the characteristic of high drop. The water level during the dry season of the inland river differs from that during the flood season by up to 60 m. In order to adapt to such a high-drop water level, the operation area of the terminal is divided into three operation platforms, namely the low water level operation platform, the middle water level operation platform, and the high water level operation platform. Each operation platform is connected by an overhead ramp trestle. Among them, the elevation difference between the top surface of the low water level operation platform and the top surface of the middle water level operation platform is about 26 m, and the elevation difference between the top surface of the middle water level operation platform and the top surface of the high water level operation platform is about 34 m. In this way, no matter which water level the inland river is at, the terminal can adapt to the water level and operate normally.

[0044] In this embodiment, the drainage channel is successively provided with an upstream diversion area 8, a middle stream diversion area 10, and a downstream diversion area 12 from top to bottom on the mountain body. An upper buffer area 9 is arranged between the upstream diversion area 8 and the middle stream diversion area 10, and a lower buffer area 15 is arranged between the middle stream diversion area 10 and the downstream diversion area 12. The upstream diversion area 8 is provided with an inlet area 7 at its inlet, and the inlet area 7 is in the shape of an upward trumpet to collect debris flow. The downstream diversion area 12 is provided with an outlet area 13 at its outlet, and the outlet area 13 is in the form of a downward trumpet structure, which is conducive to the outward drainage of debris flow. At the same time, the outlet area 13 is located outside the terminal operation area, minimizing the impact of debris flow on the slope-type terminal, and the two can be constructed separately, which is convenient and efficient. Through the coordinated cooperation of each area, the debris flow can be discharged smoothly and efficiently.

[0045] Among them, the middle stream diversion area 10 of the drainage channel is located below the trestle 141 between the high water level operation platform and the middle water level operation platform, and the downstream diversion area 12 is located below the trestle 142 between the middle water level operation platform and the low water level operation platform.

[0046] At the same time, where the drainage channel passes through the trestle, the distance from the center line of the drainage channel to the edge of the pile foundation is not less than 1.5 times the total width of the drainage channel (the distance between the edges of the side walls on both sides).

[0047] Among them, the speed control belt 4 is arranged along the upstream diversion area 8, the upper buffer area 9, the middle stream diversion area 10, the lower buffer area 15, and the downstream diversion area 12 throughout. And the geotextile bag laminate 2 is arranged along the inlet area 7, the upstream diversion area 8, the upper buffer area 9, the middle stream diversion area 10, the lower buffer area 15, and the downstream diversion area 12 throughout. And the geotextile bag laminate 2 at the inlet area 7 needs to be strengthened and reinforced to cope with the strong impact of debris flow at the entrance of the drainage channel.

[0048] Structural joints are provided in the middle of each area of the upstream diversion area 8, the upper buffer area 9, the middle stream diversion area 10, the lower buffer area 15, and the downstream diversion area 12, and the width of the structural joint is preferably 2 cm.

[0049] The above embodiments are only a relatively optimal technical solution of the present utility model. Those skilled in the art should understand that modifications or substitutions to the technical solutions or parameters in the embodiments can be made without departing from the principles and essence of the present utility model, and all should be covered within the protection scope of the present utility model.

Claims

1. A geotextile bag anti-collision debris flow drainage channel applicable to a bank slope type wharf, characterized in that: The drainage channel is arranged on the mountain body of the bank slope type wharf. A channel bottom plate (3) is arranged at the bottom of the drainage channel. Side walls (1) are arranged on both sides of the channel bottom plate (3). An inclined wall body (11) is arranged on the wall surface of the side wall (1) opposite to the channel bottom plate (3). The inclined wall body (11) inclines away from the drainage channel in the height direction relative to the side wall (1). A geotextile bag stack (2) is leaned on the inclined wall body (11). Wall bag connectors (5) are arranged on the inclined wall body (11) and are connected with and limit the geotextile bags (21) of each layer of the geotextile bag stack (2) to form a side protection state inside the drainage channel. A speed control belt (4) is arranged on the upper surface of the channel bottom plate (3) along the whole length of the drainage channel to form a state of controlling the speed and flowing through of debris flow in the drainage channel.

2. The soil geotextile bag anti-collision debris flow drainage channel applicable to a bank slope type wharf according to claim 1, wherein: Bag - to - bag connectors (6) are arranged between the upper and lower geotextile bags (21) of the geotextile bag stack (2).

3. A geotextile bag anti-collision debris flow drainage channel applicable to a bank slope type wharf according to claim 1, characterized in that: The included angle between the inclined wall body (11) and the channel bottom plate (3) is 100° - 120°.

4. The debris flow drainage trough with geotextile bags for anti-collision applicable to bank slope type wharves according to claim 1, characterized in that: The speed control belt (4) is arranged in the middle area of the channel bottom plate (3).

5. The geotextile bag anti-collision debris flow drainage channel applicable to the bank slope type wharf according to claim 4, characterized in that: A hypotenuse (41) is arranged on the side of the speed control belt (4) opposite to the side wall (1). The hypotenuse (41) inclines away from the side wall (1) in the height direction relative to the speed control belt (4).

6. The geotextile bag anti-collision debris flow drainage channel applicable to a bank slope type wharf according to claim 5, characterized in that: The included angle between the hypotenuse (41) and the channel bottom plate (3) is 100° - 120°.

7. A geotextile bag anti-collision debris flow drainage channel applicable to a bank slope type wharf according to claim 1, characterized in that: The drainage channel is sequentially provided with an upper - reach diversion area (8), a middle - reach diversion area (10) and a lower - reach diversion area (12) from top to bottom on the mountain body. An upper buffer area (9) is arranged between the upper - reach diversion area (8) and the middle - reach diversion area (10). A lower buffer area (15) is arranged between the middle - reach diversion area (10) and the lower - reach diversion area (12). An inlet area (7) is arranged at the inlet of the upper - reach diversion area (8). An outlet area (13) is arranged at the outlet of the lower - reach diversion area (12).

8. The anti-collision debris flow drainage trough for a bank slope type wharf made of geotextile bags according to claim 1 or 7, characterized in that: The drainage channel is applicable to the bank slope type wharf with a mountain slope between 0° and 45°.

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