Construction method of waterside slope geotextile bag structure

Abstract

The invention discloses a construction method of a waterside slope geotextile bag structure. The construction method comprises the following steps that S1, a geotextile bag extends and is pressed into a slope at the top of a slope body to be fixed through a U-shaped nail; s2, positioning steel pipes are driven into the slope top and the slope bottom correspondingly to be connected with the positioning steel pipes; s3, filling the geomembrane bags on the water and under the water at the same time, adding a flocculating agent to the part below the normal water line for rapid consolidation, and laying regular geomembrane bags on the part above the normal water line; s4, a polygonal filling hole is formed in the geomembrane bag to be filled with self-compacting soil, and a spherical expansion body is formed through high-pressure filling; s5, the diver ensures that the nylon rope sleeve is sleeved with the positioning steel pipes at the slope top and the slope bottom, and it is ensured that the geotextile bags are stably in place; and S6, the diver conducts underwater adjustment on implantation of the geotextile bag and connection of all parts, and it is ensured that the bag body is tightly combined. Through the high-pressure grouting technology, the stability of the structure is effectively improved, water flow impact can be resisted, and slope collapse is prevented.

Description

Technical Field

[0001] The invention relates to a slope water conservancy construction method, in particular to a construction method of a waterside slope geotechnical mold bag structure, belonging to the technical field of water conservancy engineering. Background Art

[0002] With the increasing demand for water conservancy projects and coastal protection, traditional slope protection structures are easily damaged by water flow, especially in the part below the normal water level, where the slope protection is unstable due to water flow erosion. At the same time, although traditional hard slope protection structures can provide certain protection, they lack ecological restoration capabilities and cannot achieve sustainable environmental development. Therefore, in view of the durability of underwater slope protection and the ecological function of the above-water part, a new slope protection technology that can combine structural stability and ecological restoration capabilities is urgently needed. Summary of the invention

[0003] In response to the problems and needs raised above, this solution proposes a construction method for a geotextile bag structure for a waterside slope. Due to the following technical features, it can achieve the above technical objectives and bring about many other technical effects.

[0004] The object of the present invention is to provide a construction method of a waterside slope geotextile bag structure, comprising the following steps:

[0005] S1: Extend the geotextile bag at the top of the slope and press it into the top slope of the slope. The above-water and underwater geotextile bags are laid flat on the slope surface respectively, and the joints are fixed with U-shaped nails.

[0006] S2: Positioning steel pipes are driven into the top and bottom of the slope respectively, and the geotextile bag is dragged below the normal water level by ship. Divers ensure that the nylon rope is connected to the positioning steel pipe and use a hand winch to adjust the position of the geotextile bag;

[0007] S3: Fill the geomembrane bags above and below the water at the same time, and fill the self-compacting soil into the filling hole. When filling, follow the order of deep water first, shallow water second, bottom first, top. Divers step on it by themselves, or use vibrating equipment to assist in filling. Add flocculants to the part below the normal water level for rapid consolidation. The part above the normal water level is laid with regular geomembrane bags, and the surroundings are filled with self-compacting soil. The middle part is made into a regular rectangle, not filled with self-compacting soil, and planted with green plants.

[0008] S4: The part below the normal water level line is filled with self-compacting soil around the geomembrane bag according to the wave level. A polygonal filling hole is opened on the geomembrane bag to fill the self-compacting soil. The unfilled part in the middle is opened to form a grouting hole, and a spherical expansion body is formed by high-pressure filling.

[0009] S5: Divers operate underwater to ensure that the nylon rope loop is inserted into the positioning steel pipes at the top and bottom of the slope, and the positioning anchor and positioning float are placed at the bottom of the slope for fixing; a hand winch is used at the top of the slope to adjust the horizontal and vertical positions of the above-water and underwater geotextile bags to ensure that the geotextile bags are stably in place;

[0010] S6: Divers make underwater adjustments to the implantation of the geotextile bag and the connections between its parts to ensure the tight integration of the bag and the foundation structure and the accuracy of the construction.

[0011] In an example of the present invention, in step S1, U-shaped nails are driven into the slope after the self-compacting soil is filled, with a spacing of 5-20 cm.

[0012] In one example of the present invention, the filling speed of the geobag should be maintained at 5-30m3 / h, and the filling pressure should be maintained at 0.1-1.0MPa.

[0013] In one example of the present invention, in step S4, the middle portion of the geomembrane bag is made into a hexagonal honeycomb shape, an arrow honeycomb shape, and a concave hexagonal honeycomb shape.

[0014] In one example of the present invention, the geobag material is a high-strength polymer that is UV-resistant and can withstand harsh environmental conditions for a long time.

[0015] In one example of the present invention, the diameter of the nylon rope loop ranges from 5 to 10 mm, and has the characteristics of strong wear resistance and high tensile strength, ensuring a stable connection of the geobag during the construction process.

[0016] In one example of the present invention, the positioning steel pipe is a stainless steel pipe with a diameter of 40 to 60 mm.

[0017] The beneficial effects of the present invention are:

[0018] Through high-pressure grouting technology, a spherical expansion body is formed, which effectively improves the stability of the structure;

[0019] The geotextile bag structure can resist the impact of water flow and prevent slope collapse;

[0020] The ecological planting function of the above-water part not only improves the environmental benefits of the slope, but also realizes the organic combination of slope protection and ecological restoration.

[0021] The best embodiment for carrying out the present invention will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention, wherein the drawings are only used to illustrate some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0023] Figure 1 A schematic diagram of an ecological slope protection structure according to an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of different forms of underwater geotextile bags according to an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the waterside ecological slope protection construction according to an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the connection of geotextile bags for water-based ecological slope protection according to an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the connection of underwater geotextile bags for ecological slope protection near water according to an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of an expanded sphere formed by high-pressure grouting of a waterside ecological slope protection according to an embodiment of the present invention.

[0029] List of reference numerals: 1-slope, 2-geotextile bag, 3-U-shaped nail, 4-slope bottom, 5-constant water level line, 6-slope surface, 7-positioning steel pipe, 8-nylon rope loop, 9-regular rectangle, 10-hexagonal honeycomb, 11-concave hexagonal honeycomb, 12-filling hole, 13-green plant, 14-unfilled part, 15-grouting hole, 16-spherical expansion body, 17-positioning anchor, 18-positioning float, 19-ship, 20-hand winch, 21-slope top, 22-diver, 23-arrow honeycomb. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] A construction method of a waterside slope geotextile bag structure according to the present invention comprises the following steps:

[0033] S1: Extend the geotextile bag 2 and press it into the top slope of the slope 1 at the top 21 of the slope. The geotextile bags 2 above and below the water are laid flat on the slope 6 respectively, and the joints are fixed with U-shaped nails 3. For safety reasons, the U-shaped nails 3 are driven into the slope 1 after the self-compacting soil is filled, with a spacing of 5-20 cm, which can prevent the U-shaped nails 3 from being deformed due to temperature, earthquakes, etc., and thus failing to play a fixing role. Figure 1 shown.

[0034] S2: Drive positioning steel pipes 7 into the top 21 and bottom 4 of the slope respectively, and use the ship 19 to drag the geotextile bag 2 below the normal water level 5. The diver 22 ensures that the nylon rope 8 is connected to the positioning steel pipe 7, and uses the hand winch 20 to adjust the position of the geotextile bag 2. In order to ensure sufficient strength, the geotextile bag 2 is made of high-strength polymer with UV protection, which can withstand harsh environmental conditions for a long time. The positioning steel pipe 7 is made of stainless steel pipe with a diameter of 40 to 60 mm, which can ensure a certain tensile strength and facilitate construction. Figure 2 shown.

[0035] S3: Fill the geomembrane bags 2 above and below the water at the same time, and fill the self-compacting soil into the filling hole 15. When filling, follow the order of deep water first, shallow water second, bottom first, top. The diver 22 steps on it by himself, or uses a vibrating device to assist in filling. Flocculants are added to the part below the normal water level line 5 for rapid consolidation. A regular geomembrane bag 2 is laid above the normal water level line 5, and the surrounding area is filled with self-compacting soil. The middle part is made into a regular rectangle 9, is not filled with self-compacting soil, and is planted with green plants 13.

[0036] S4: The part below the normal water level line 5 is filled with self-compacting soil around the geomembrane bag 2 according to the wave level. A polygonal filling hole 12 is opened on the geomembrane bag 2 to fill the self-compacting soil. The middle unfilled part 14 is opened to form a grouting hole 15. The high-pressure filling forms a spherical expansion body 16. Figure 2 shown.

[0037] In order to ensure the filling effect, the best solution is to maintain the filling speed of the geomembrane bag 2 at 5-30m3 / h and the filling pressure at 0.1-1.0MPa. If the speed and pressure are too high, the mud will accumulate at the bottom, and the filling effect will be uneven. In step S4, the middle part of the geomembrane bag 2 is made into a hexagonal honeycomb shape 10, an arrow honeycomb shape 23 and a concave hexagonal honeycomb shape 11. As a most preferred solution, the honeycomb-shaped structure can absorb energy and better achieve the effect of wave breaking and buffering by colliding with the waves. Figure 4-6 shown.

[0038] S5: The diver 22 operates underwater to ensure that the nylon rope loop 8 is inserted into the positioning steel pipe 7 at the top 21 of the slope and the bottom 4 of the slope, and the positioning anchor 17 and the positioning float 18 are placed at the bottom 4 of the slope for fixing. The hand winch 20 is used at the top 21 of the slope to adjust the horizontal and vertical positions of the above-water and underwater geotextile bags 2 to ensure that the geotextile bags 2 are stably in place. The diameter of the nylon rope loop 8 is in the range of 5 to 10 mm. This caliber can ensure wear resistance and tensile strength, ensure the stable connection of the geotextile bag 2 during construction, and also facilitate the diver 22 to move and adjust.

[0039] S6: The diver 22 makes underwater adjustments to the implantation of the geotextile bag 2 and the connection of each part to ensure the close connection between the bag body and the foundation structure and the construction accuracy, such as Figure 3 shown.

[0040] In summary, the underwater part of the geotextile bag 2 ecological slope protection structure described in the present invention adopts geotextile bags 2 of different forms to achieve the purpose of wave dissipation, and forms a spherical expansion body through high-pressure grouting technology, which effectively improves the stability of the slope. The ecological planting design of the above-water part not only improves the environmental benefits of the slope protection, but also enhances the stability of the slope. In addition, the present invention is simple to construct, accurate in positioning, and has good protection and ecological restoration effects.

[0041] The above describes in detail an exemplary implementation method of a construction method of a waterside slope geotextile bag structure proposed by the present invention with reference to a preferred embodiment. However, those skilled in the art will appreciate that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention can be combined in various ways without exceeding the protection scope of the present invention, which is determined by the attached claims.

Claims

1. A construction method for a waterside slope geotextile bag structure, characterized in that: The following steps are involved: S1: Extend the geotextile bag (2) and press it into the top slope of the slope (1) at the top of the slope (21). The upper and underwater geotextile bags (2) are laid flat on the slope surface (6) respectively, and the joints are fixed with U-shaped nails (3); S2: Positioning steel pipes (7) are driven into the top (21) and bottom (4) of the slope respectively, and the geotextile bag (2) is dragged below the normal water level (5) by a ship (19). A diver (22) ensures that the nylon rope loop (8) is connected to the positioning steel pipe (7), and a hand winch (20) is used to adjust the position of the geotextile bag (2); S3: The geomembrane bags (2) above and below the water are filled simultaneously, and the self-compacting soil is filled into the filling hole (15). The filling is carried out in the order of deep water first and shallow water second, and bottom first and top. The diver (22) steps on it by himself, or uses a vibrating device to assist in the filling. A flocculant is added to the part below the normal water level (5) for rapid consolidation. A regular geomembrane bag (2) is laid on the part above the normal water level (5), and the surrounding area is filled with self-compacting soil. The middle part is made into a regular rectangle (9), is not filled with self-compacting soil, and green plants (13) are planted. S4: The part below the normal water level line (5) is filled with self-compacting soil around the geomembrane bag (2) according to the wave level. A polygonal filling hole (12) is opened on the geomembrane bag (2) to fill the self-compacting soil. The middle unfilled part (14) is opened to form a grouting hole (15). High-pressure filling is performed to form a spherical expansion body (16); S5: The diver (22) operates underwater to ensure that the nylon rope loop (8) is inserted into the positioning steel pipes (7) at the top (21) and the bottom (4) of the slope, and a positioning anchor (17) and a positioning float (18) are placed at the bottom (4) of the slope to fix the geotextile bag (2). The hand chain hoist (20) is used at the top (21) of the slope to adjust the horizontal and vertical positions of the geotextile bag (2) above and below the water to ensure that the geotextile bag (2) is stably positioned. S6: The diver (22) performs underwater adjustment on the implantation of the geotextile bag (2) and the connection of each part.

2. The construction method of a waterside slope geotextile bag structure according to claim 1, characterized in that: In step S1, U-shaped nails (3) are driven into the interior of the slope (1) after the self-compacting soil is filled, with a spacing of 5-20 cm.

3. The construction method of a waterside slope geobag structure according to claim 1, characterized in that: The filling speed of the geobag (2) should be maintained at 5-30m3 / h, and the filling pressure should be maintained at 0.1-1.0MPa.

4. The construction method of a waterside slope geotextile bag structure according to claim 1, characterized in that: In step S4, the middle part of the geomembrane bag (2) is made into a hexagonal honeycomb shape (10), an arrow honeycomb shape (23) and a concave hexagonal honeycomb shape (11).

5. The construction method of a waterside slope geotextile bag structure according to claim 1, characterized in that: The material of the geotextile bag (2) is a high-strength polymer that is UV-resistant.

6. The construction method of a waterside slope geobag structure according to claim 1, characterized in that: The diameter of the nylon rope sleeve (8) ranges from 5 to 10 mm.

7. The construction method of a waterside slope geobag structure according to claim 1, characterized in that: The positioning steel pipe (7) is a stainless steel pipe with a diameter of 40 to 60 mm.

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