Ecological submerged dam structure for mountain river channel

Abstract

The utility model discloses an ecological submerged dike structure for mountainous area riverway, including anti-scour cloth, gabion, pipe bag soil pillows and Reynolds protection pad, the anti-scour cloth is laid on the bottom surface of riverway, the pipe bag soil pillows are stacked on the anti-scour cloth to form a dike body, the upstream face of the pipe bag soil pillows is a vertical plane, and the Reynolds protection pad is arranged on the upstream face of the pipe bag soil pillows. The downstream face of the pipe bag soil pillow comprises a horizontal section and a slope section, the gabion is placed on the upstream face of the pipe bag soil pillow, the gabion is as high as the dam body, the Reynolds protection pad is laid on the horizontal section and the slope section of the pipe bag soil pillow, and a concrete interlocking block is arranged on the anti-flushing cloth at the tail end of the Reynolds protection pad. The submerged dike structure is good in ecological effect and capable of fully utilizing gravel resources in a riverbed to conduct riverway treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of mountain river engineering, in particular to an ecological submerged dam structure for mountain rivers. Background Technique

[0002] Mountain rivers often have a steep longitudinal slope and fast water flow velocity, which easily carry away sand and gravel particles in the riverbed, causing soil erosion; on the other hand, the scouring effect of mountain rivers is strong. If not restricted, gullies are likely to be formed, threatening the safety of flood control projects on both banks. Submerged dams are one of the main regulation projects in mountain river regulation projects to increase the river bottom roughness, slow down the flow velocity, achieve sedimentation, raise the water level, and adjust the riverbed slope ratio. At present, the submerged dam structure is mainly made of reinforced concrete structure, which is strong, durable, and has mature technology, but its ecological effect is poor and the project investment is large. Therefore, there is an urgent need for a submerged dam structure with good ecological effect that can make full use of the sand and gravel resources in the riverbed for river regulation. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, aiming to provide an ecological submerged dam structure with good ecological effect that can make full use of the sand and gravel resources in the riverbed for river regulation.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0005] An ecological submerged dam structure for mountain rivers includes an erosion prevention cloth, gabion baskets, tubular bag soil pillows, and Reno mattresses. The erosion prevention cloth is laid on the bottom surface of the river. Multiple layers of tubular bag soil pillows are stacked on the erosion prevention cloth to form the dam body. The water-facing surface of the tubular bag soil pillow is a vertical plane, and the backwater surface of the tubular bag soil pillow includes a horizontal section and a slope section. The gabion baskets are placed on the water-facing surface of the tubular bag soil pillow and are of the same height as the dam body. The Reno mattresses are laid on the horizontal section and the slope section of the tubular bag soil pillow, and concrete interlocking blocks are arranged on the erosion prevention cloth at the end of the Reno mattresses.

[0006] Further, the concrete interlocking blocks include multiple circular precast blocks arranged in a staggered manner. Adjacent precast blocks are connected and fixed by embedded polypropylene ropes. The edges of the polypropylene ropes are connected and fixed to the Reno mattresses and the riverbank through binding buckles and steel rivets.

[0007] Further, the precast blocks are made of CBS vegetation concrete precast blocks.

[0008] Further, the width of the horizontal section of the tubular bag soil pillow is 3 - 5m, the slope ratio of the slope section is 1:3 - 1:5, and the height of each layer of tubular bag soil pillow does not exceed 1m.

[0009] Further, 30 cm of protective soil is laid between the topmost layer of tubular bag soil pillows and the Reno mattresses.

[0010] Further, the Reno mattress is composed of gabions and stones.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model has low cost and convenient construction. The materials for the dam body structure can be obtained from the river channel, using local materials, which reduces the project cost. Moreover, the dam body structure is simple in form. The concrete interlocking blocks used can be prefabricated by a processing factory and hoisted on-site to complete the construction, which is convenient and the required construction period is relatively short. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a top view of the utility model.

[0015] Reference Signs:

[0016] 1 - erosion prevention cloth, 2 - gabion, 3 - tube - shaped soil pillow, 4 - Reno mattress, 5 - concrete interlocking block, 51 - precast block, 52 - polypropylene rope, 53 - binding buckle, 54 - steel rivet. Detailed Embodiment

[0017] The following will refer to the drawings and combine with embodiments to elaborate on the utility model in detail.

[0018] As Figure 1 and Figure 2 shown, an ecological submerged - dam structure for mountain - area river channels includes an erosion prevention cloth 1, gabions 2, tube - shaped soil pillows 3 and Reno mattresses 4. The erosion prevention cloth 1 is laid on the bottom surface of the river channel. The tube - shaped soil pillows 3 are stacked in multiple layers on the erosion prevention cloth 1 to form the dam body. The water - facing side of the tube - shaped soil pillow 3 is a vertical plane, and the back - water side of the tube - shaped soil pillow 3 includes a horizontal section and a slope section. The gabions 2 are placed on the water - facing side of the tube - shaped soil pillow 3 and are of the same height as the dam body. The Reno mattress 4 is laid on the horizontal section and the slope section of the tube - shaped soil pillow 3, and concrete interlocking blocks 5 are arranged on the erosion prevention cloth 1 at the end of the Reno mattress 4.

[0019] As Figure 2 shown, the concrete interlocking block 5 includes a plurality of circular precast blocks 51 arranged in a staggered manner. Adjacent precast blocks 51 are connected and fixed by an embedded polypropylene rope 52. The edges of the polypropylene rope 52 are connected and fixed to the Reno mattress 4 and the riverbank by binding buckles 53 and steel rivets 54. The precast block 51 is made of CBS vegetation - growing concrete precast block. The concrete interlocking block 5 is made by prefabrication, which saves construction time. The construction site uses a hoisting method for installation and fixation, which is convenient. Moreover, the CBS vegetation - growing concrete precast block has porosity and ecological properties, which is beneficial for the attachment of grass seeds, fish eggs and microorganisms, forming a micro - ecological system and having a certain water - purification function.

[0020] The utility model arranges ecological submerged dams at positions where the scouring effect of mountain rivers is strong, levels the site where the submerged dams are located, and lays erosion prevention cloth 1 near the dam body after leveling. The dam body section is stacked by tubular bag soil pillows 3, and the elevation of the dam top does not exceed the water level in the dry season of the river. The water-facing side of the dam body is a vertical plane, and the backwater side is composed of a horizontal section and a slope section. The width of the horizontal section of the tubular bag soil pillow 3 is 3-5 m, and the slope ratio of the slope section is 1:3-1:5. The height of each layer of tubular bag soil pillows 3 does not exceed 1 m. The tubular bag soil pillow 3 is formed after filling a tubular bag with a mixture composed of river sand, grass seeds, and humus soil. The impurities and oversize boulders should be removed from the river sand used in the tubular bag soil pillow 3, and the filling rate of the mixture composed of grass seeds and humus soil is 70%-80%. The dam body structure composed of tubular bag soil pillows 3 is mainly made of natural materials. After a period of restoration, plants can grow out of the tubular bags, which can not only green the dam body structure, but also effectively reduce the water flow velocity and weaken the scouring effect of the water flow due to the vegetation coverage.

[0021] There is 30 cm of protective soil laid between the topmost layer of tubular bag soil pillows 3 of the dam body and the Reno mattress 4, which can form a protective layer on the top of the dam body. On the one hand, it can prevent the Reno mattress 4 from scratching the tubular bag soil pillow 3, and on the other hand, it can prevent the tubular bag soil pillow 3 from being exposed to the sun for a long time and causing its aging. The Reno mattress 4 is composed of gabions and stones and is laid on the top of the tubular bag soil pillow 3 as the surface erosion prevention structure of the dam body.

[0022] The above is only the preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ecological submerged dam structure for mountain rivers, characterized in that: It includes an impact protection cloth (1), a gabion mattress (2), tubular bag soil pillows (3) and a Reno mattress (4). The impact protection cloth (1) is laid on the bottom surface of the river channel. Multiple layers of tubular bag soil pillows (3) are stacked on the impact protection cloth (1) to form a dam body. The water-facing side of the tubular bag soil pillow (3) is a vertical plane, and the backwater side of the tubular bag soil pillow (3) includes a horizontal section and a slope section. The gabion mattress (2) is placed on the water-facing side of the tubular bag soil pillow (3) and is of the same height as the dam body. The Reno mattress (4) is laid on the horizontal section and the slope section of the tubular bag soil pillow (3), and concrete interlocking blocks (5) are arranged on the impact protection cloth (1) at the end of the Reno mattress (4).

2. The ecological submerged dam structure for mountain rivers according to claim 1, characterized in that: The concrete interlocking block (5) includes a plurality of circular precast blocks (51) arranged in a staggered manner. Adjacent precast blocks (51) are connected and fixed by embedded polypropylene ropes (52). The edges of the polypropylene ropes (52) are connected and fixed to the Reno mattress (4) and the river bank through binding buckles (53) and steel rivets (54).

3. The ecological submerged dam structure for mountain rivers according to claim 2, characterized in that: The precast block (51) is a CBS vegetation concrete precast block.

4. An ecological submerged dam structure for mountain rivers according to claim 1, characterized in that: The width of the horizontal section of the tubular bag soil pillow (3) is 3 - 5 m, the slope ratio of the slope section is 1:3 - 1:5, and the height of each layer of tubular bag soil pillow (3) does not exceed 1 m.

5. The ecological submerged dam structure for mountain rivers according to claim 4, characterized in that: A 30-cm thick protective soil is laid between the topmost layer of tubular bag soil pillows (3) and the Reno mattress (4).

6. The ecological submerged dam structure for mountain river according to claim 1, characterized in that: The Reno mattress (4) is composed of a solid gabion cage and stones.

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