High slope slide-resistant pile grading protection system based on cluster drainage system

Abstract

The utility model provides a high slope slide-resistant pile grading protection system based on a cluster drainage system, which comprises a slope drainage pipe, a slope protection grid formed by pouring vegetation concrete, and steps arranged on a high and steep soil slope with the elevation of N1 meters and arranged at the elevation of N2 meters, and one slide-resistant pile is arranged on each step at the interval of N3 meters; each step is further provided with a side slope pressing foot, each side slope pressing foot comprises a side ditch groove excavated in the corresponding step and a cast-in-place bottom plate poured in the corresponding side ditch groove, a prefabricated wing plate is installed on the side edge of each side ditch groove, and each prefabricated wing plate is provided with a plurality of pre-buried lifting points; a first preformed hole and a second preformed hole are formed in the prefabricated wing plate in the side edge of each side ditch groove; slope surface drainage ditches are excavated in the portion, above each step, of the slope surface of the side slope at the interval of N4 m, each slope surface drainage ditch comprises a slope surface drainage pipe, and the lower end of each slope surface drainage pipe penetrates through a first reserved hole. The protection effect of the side slope is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building engineering construction technology, especially based on the high slope anti -slip pile grading protection system of cluster drainage system. BACKGROUND

[0002] High soil slope is often found on both sides of highway, waterway and other infrastructure, compared with high rock slope, high soil slope is more likely to cause landslide, collapse and slope instability when it is disturbed in the period of heavy rainfall or in the construction and operation stage. At the same time, the vegetation in the slope area is destroyed due to infrastructure construction, and the vegetation in the slope area is sparse or reduced under the influence of human development, which leads to the increase of water content in the slope soil when a large amount of rainfall, forming a water-rich high slope, which is not conducive to construction in the rainy season. High slope is prone to soil erosion under the action of rainfall and solarization weathering cycle, which is not conducive to the long-term stability of high slope. Therefore, it is necessary to reinforce and protect the high soil slope on both sides of highway, waterway and other infrastructure.

[0003] The conventional high and steep slope composite reinforcement system adopts gravity type ballast and anchoring system in combination with a drainage system, so that the mutual coordination degree of each part of the composite reinforcement system is not high, and the construction period is long, difficult and high in cost.

[0004] Therefore, there is an urgent need for a high slope anti-sliding pile grading protection system based on a cluster drainage system to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the utility model provides a high slope anti-sliding pile grading protection system based on a cluster drainage system, which comprises a slope drainage pipe, a slope protection grid formed by pouring vegetation concrete, and a step set on a high and steep soil slope at an elevation N1, and one anti-sliding pile is provided every N3 meters on each step;

[0006] A slope footing is further provided on each step, which comprises a ditch groove excavated on the step and a cast-in-place bottom plate poured in the ditch groove, a prefabricated wing plate is installed on the side of the ditch groove, and a plurality of embedded lifting points are provided on the prefabricated wing plate; a first reserved hole and a second reserved hole are respectively provided in the prefabricated wing plate on each side of each ditch groove;

[0007] A slope surface drainage ditch is excavated every N4 meters on the slope surface above each step, which comprises a slope surface drainage pipe, and the lower end of the slope surface drainage pipe is provided with a first reserved hole; the second reserved hole is connected to the ditch drainage pipe through a drainage pipe;

[0008] The ecological chain block is embedded in the form of wedge and mutual engagement, wherein, the grass seeds are put in the N9 air planting holes in each ecological chain block.

[0009] Further, the anti-slide pile penetrates the graded slope slip surface, wherein the top elevation of the anti-slide pile is flush with the step.

[0010] Further, the prefabricated wing plate is L-shaped, the angle between the side and the bottom is the same as the angle of the ditch groove, and the prefabricated wing plate is made of concrete.

[0011] Further, the corner of the prefabricated wing plate is provided with a wing plate reinforced corner, and the corner is provided with an arc-shaped inner corner; a wing plate stiffening rib is arranged at an interval of N5 meters on the inner side of each prefabricated wing plate, and the wing plate stiffening rib is integrally poured and formed with the prefabricated wing plate.

[0012] Further, each prefabricated wing plate is provided with 4 embedded lifting points, which are uniformly and symmetrically arranged in space, and the distance between the 4 embedded lifting points and the longitudinal symmetry axis is N6 meters.

[0013] Further, the inside of the ditch groove is fully paved with geotextile as a ditch groove water barrier, and the geotextile is tightly and fully paved along the inner wall of the ditch groove, and the two ends are stretched out and inserted into the soil layer.

[0014] The geotextile ditch groove water barrier is arranged between the prefabricated wing plate and the ditch groove.

[0015] Further, the prefabricated wing plate is hoisted and installed by using a hoisting auxiliary device, the hoisting auxiliary device comprises an I-beam and 2 cables, 2 cable holes are symmetrically welded on the lower flange of the I-beam, and a crane hole is centrally welded on the upper flange of the I-beam.

[0016] One of the cables passes through one of the embedded lifting points on the long side of the prefabricated wing plate, one of the cable holes on the lower flange of the I-beam and one of the embedded lifting points on the short side of the prefabricated wing plate in sequence, and the two ends of the cable are fixed to one of the embedded lifting points on the long side and one of the embedded lifting points on the short side of the prefabricated wing plate.

[0017] The other cable passes through the other embedded lifting point on the long side of the prefabricated wing plate, the other cable hole on the lower flange of the I-beam and the other embedded lifting point on the short side of the prefabricated wing plate in sequence, and the two ends of the cable are fixed to the other embedded lifting point on the long side and the other embedded lifting point on the short side of the prefabricated wing plate.

[0018] Further, the cast-in-place bottom plate is provided with a drainage slope formed by rising at intervals of N4 meters.

[0019] Further, the second reserved hole is located at the elevation of 0 of the drainage slope, and the first reserved hole is located above the second reserved hole.

[0020] Further, the slope drainage ditch further comprises a groove, the bottom of the groove is paved with geotextile, and the groove walls on both sides of the groove are tightly paved with geotextile of a specified height;

[0021] The geotextile is paved with a sand cushion layer, the slope drainage pipe is centrally installed on the sand cushion layer, and graded gravel covering layers are filled in the remaining space of the slope drainage ditch.

[0022] The utility model discloses the beneficial effect lies in:

[0023] The high slope anti -slip pile grading protection system based on the cluster drainage system provided by the utility model adopts the high slope composite reinforcement protection system of " cluster drainage + ecological protection slope " based on the anti -slip pile grading, organically combines each part of the composite protection slope, interacts between each subsystem, reduces ballast and anchoring material use, and reaches the effect of high slope protection and reinforcement. Adopting the ecological protection slope, water is further preserved and soil is further fixed, and the durability of the protection system is enhanced.

[0024] Other features and advantages of the present utility model will be described in the following description, and some of them will become apparent from the description, or will be understood by those skilled in the art through implementation of the present utility model. The purpose and other advantages of the present utility model can be realized and obtained through the structure indicated in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0026] Figure 1 The structure schematic diagram of high and steep slope grading excavation and slope sliding surface according to the embodiment of the present utility model is shown;

[0027] Figure 2 The top view of the step working plate and the anti -slip pile according to the embodiment of the present utility model is shown;

[0028] Figure 3 The structure schematic diagram of the slope footing construction after completion according to the embodiment of the present utility model is shown;

[0029] Figure 4 The detailed structure schematic diagram of the slope footing according to the embodiment of the present utility model is shown;

[0030] Figure 5A structure schematic diagram of the hoisting auxiliary device is shown according to the embodiment of the utility model;

[0031] Figure 6 A structure schematic diagram of the ecological interlocking block is shown according to the embodiment of the utility model; Figure 4 A structure schematic diagram of the side slope drainage pipe and the side slope drainage ditch in the side direction is shown;

[0032] Figure 7 A structure schematic diagram of the slope protection grid is shown according to the embodiment of the utility model;

[0033] Figure 8 A structure schematic diagram of the ecological interlocking block is shown according to the embodiment of the utility model;

[0034] Figure 9 A structure schematic diagram of the ecological interlocking block is shown according to the embodiment of the utility model. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely explained below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0036] The design difficulty of the high and steep soil slope protection and reinforcement system is big, and the influence factors on the stability of the high and steep soil slope under different working conditions are considered. In addition, the engineering quantity of the high and steep slope along the two sides of the highway and the waterway is big, and a single reinforcement and protection method cannot meet the long-term stability of the high and steep soil slope.

[0037] In addition, the conventional high and steep slope composite reinforcement system adopts the slope protection material mainly composed of concrete, which is not conducive to the greening of the slope and the play of the slope protection role of the plants, and the slope protection is easy to be damaged after the construction is completed, and is not conducive to the later maintenance.

[0038] In order to solve the above problems, the utility model provides a high slope anti-slide pile grading protection system based on a cluster drainage system, which comprises a side slope drainage pipe 5.6, a slope protection grid 11 formed by pouring vegetation concrete, and a step set on the high and steep soil slope at an elevation N1 meter and every N2 meter of the elevation, and one anti-slide pile 3 is arranged every N3 meters on each step.

[0039] A side slope foot 5 is further arranged on each step, the side slope foot 5 comprises a side ditch groove 5.1 excavated on the step and a cast-in-place bottom plate 5.5 cast in the side ditch groove 5.1, a prefabricated wing plate 5.2 is installed on the side of the side ditch groove 5.1, a plurality of pre-buried lifting points 5.2.2 are arranged on the prefabricated wing plate 5.2, a first reserved hole 5.2.4 and a second reserved hole 5.2.5 are respectively arranged on the prefabricated wing plate 5.2 on the side of each side ditch groove 5.1;

[0040] A slope surface drainage ditch is excavated every N4 meters on the slope surface above each step, the slope surface drainage ditch comprises a slope surface drainage pipe, the lower end of the slope surface drainage pipe is provided with the first reserved hole 5.2.4, and the second reserved hole 5.2.5 is connected with the side ditch drainage pipe 5.6 through a drainage pipe;

[0041] The slope protection grid 11 is paved with a plurality of ecological chain blocks 12, the ecological chain blocks 12 are paved in the form of wedge embedding and mutual engagement, wherein N9 grass-planting holes 12.1 are arranged in each ecological chain block 12, and grass seeds are put into the N9 grass-planting holes 12.1, and the vegetation concrete contains the grass seeds.

[0042] The utility model will be described in detail below.

[0043] 1. High and steep slope is divided into steps

[0044] The high and steep soil slope is difficult to design and construct, the range of the slope slip surface of the high and steep soil slope is large, the anchoring device needs to pass through the slope slip surface when the whole protection and reinforcement are carried out, meanwhile, the slope surface ballast device is required to have large gravity to meet the requirement of the whole stability of the slope surface, the amount of the slope protection material is large, which is not conducive to the long-term stability of the high and steep slope and does not meet the requirement of green construction and resource saving.

[0045] Therefore, the utility model divides the high and steep soil slope into steps, divides the high and steep soil slope into a plurality of small slopes by arranging the side slope grading steps, and carries out slope protection and reinforcement respectively. In the vertical direction of the high and steep soil slope, a side slope grading step is arranged every interval distance, that is, a step is arranged every N2 meters on the high and steep soil slope with a height of N1 meters. Taking a high and steep soil slope with a height of 30m as an example, the construction is described as follows:

[0046] Starting from the top of the slope and descending downwards, a step is set for every 8m decrease in elevation. For example, step 1.1 is at elevation 22m, and the smaller slopes formed above it constitute the first-level slope; step 1.2 is at elevation 14m, and the smaller slopes formed above it constitute the second-level slope; and step 1.3 is at elevation 6m, and the smaller slopes formed above it constitute the third-level slope. Each step 1 is 1.5m wide. Excess soil above each step is removed, and the slope surface is leveled to form several small slopes. The slope grading steps serve multiple purposes: they act as boundaries for grading steep soil slopes, dividing them into smaller slopes; they also serve as working surfaces for personnel and machinery; they provide locations for driving anti-slide piles 3 on steep slopes; and they act as areas for toeing and drainage ditches on the smaller slopes, maximizing the use of the limited horizontal area of ​​the slope.

[0047] 2. Construction of anti-slide piles

[0048] Step work slabs 2 are laid on the first-level step 1.1, the second-level step 1.2, and the third-level step 1.3, as shown. Figure 2 As shown, steel plates 1.5m wide and 5m long are used as the working slabs 2 for the steps. Each working slab 2 is laid with a 1m gap to provide space for the construction of anti-slide piles 3. Construction personnel and machinery can use the working slabs 2 as the working surface to construct the anti-slide piles 3 on the steep slope. The anti-slide piles 3 are bored cast-in-place piles with a diameter of 600mm. One anti-slide pile 3 is installed every N3 meters (e.g., 5 meters) along the direction of the steps. The anti-slide piles 3 penetrate the graded slope slip surface 4.2 to ensure anchoring of the soil above the graded slope slip surface 4.2, enhancing the slope's anti-slide stability. The top elevation of the anti-slide pile 3 is flush with the corresponding step 1, and it can later be used as support for the ditch cover 5.7. Figure 1 In the diagram, 4.1 represents the original slope slip surface, while 4.3, 4.4, and 4.5 represent the first, second, and third grade slope slip surfaces, respectively.

[0049] 3. Slope toe construction

[0050] Each step is also equipped with a slope support 5, which includes a ditch 5.1 excavated on the step and a cast-in-place base slab 5.5 poured into the ditch 5.1. Precast wing plates 5.2 are installed on the sides of the ditch 5.1, and multiple pre-embedded lifting points 5.2.2 are provided on the precast wing plates 5.2 on the sides of each ditch 5.1. A first reserved hole 5.2.4 and a second reserved hole 5.2.5 are respectively opened on the precast wing plates 5.2 on the sides of each ditch 5.1. The ditch 5.1 for water collection and drainage is excavated on each step using the "reverse method," which includes: after the excavator is positioned, removing a step working plate 2 in front of the excavator bucket, and excavating the ditch 5.1 to form as shown in the image. Figure 3As shown, the isosceles trapezoid with a top width of 1.5 m, a bottom width of 1.2 m and a height of 1 m, after the excavation is completed, the excavator moves back by one step of the working plate 2, and continues to excavate. After the excavation is completed, the edges of the ditch 5.1 are flattened and compacted to provide a foundation for the installation of the prefabricated wing plate 5.2.

[0051] The slope foot 5 of the integrated water and drainage ditch is constructed by using a "prefabricated wing plate + cast-in-place bottom plate" combined construction method, the wing plates on both sides of the water and drainage ditch are made of assembled concrete components, and the bottom plate is made of cast-in-place concrete, which avoids the inconvenience of lifting caused by the self-weight of the whole prefabricated component, and avoids the complex processes of formwork, maintenance and demolding of the side wing plates of the ditch during whole cast-in-place, improves the construction efficiency and saves the construction period.

[0052] In some embodiments of the present application, the structure of the prefabricated wing plate 5.2 is as shown in Figure 4 The overall structure is L-shaped, with a height of 1 m, a bottom edge length of 0.2 m, and an angle between the side edge and the bottom edge being the same as the angle of the ditch 5.1. The main thickness of the prefabricated wing plate 5.2 is 6 cm, which is prefabricated by using concrete with a strength not less than C30 to ensure that the strength of the lightweight component meets the requirements. The corner of the prefabricated wing plate 5.2 is provided with a wing plate reinforced corner 5.2.3, which has a thickness of 15 cm and is provided with an arc-shaped inner corner at the corner, which increases the structural strength of the prefabricated wing plate 5.2 at the turning position and avoids damage to the weak position of the component caused by bumps during lifting and installation.

[0053] To facilitate lifting and installation on site, the length of each prefabricated wing plate 5.2 is set to 3 m, and a wing plate stiffening rib 5.2.1 is arranged at an interval of N5 meters (for example, 1 m) on the inner side of each prefabricated wing plate 5.2, that is, two wing plate stiffening ribs 5.2.1 are uniformly arranged on each prefabricated wing plate 5.2, the wing plate stiffening rib 5.2.1 has a thickness of 5 cm and a width of 20 cm, which is used to enhance the structural strength of the long side of the prefabricated wing plate 5.2 and avoid cracking of the concrete of the long side of the prefabricated wing plate 5.2 caused by bumps during lifting and installation. When the prefabricated wing plate 5.2 is prefabricated, the wing plate stiffening rib 5.2.1 is integrally poured and formed with the prefabricated wing plate 5.2, that is, an integral body is formed by integrally pouring and prefabricating.

[0054] For the convenience of hoisting and installing the prefabricated wing plate 5.2, a plurality of embedded lifting points (5.2.2) are arranged on the prefabricated wing plate 5.2, and the embedded lifting points 5.2.2 are provided in the prefabricated wing plate 5.2 to provide force points for hoisting equipment. Each prefabricated wing plate 5.2 is provided with four embedded lifting points 5.2.2, which are uniformly and symmetrically arranged in space, and the distance between the four embedded lifting points 5.2.2 and the longitudinal symmetry axis is N6 meters, for example, 1 meter. At this time, the two embedded lifting points 5.2.2 at the upper part are 5 cm away from the long upper edge line, and the two embedded lifting points 5.2.2 at the lower part are 10 cm away from the short edge outer edge line. When hoisting, the four embedded lifting points are connected with the cable to adjust the spatial orientation of the prefabricated wing plate 5.2, so that the prefabricated wing plate 5.2 can be installed closely to the side ditch groove 5.1.

[0055] Before installing the prefabricated wing plate 5.2, a geotextile is fully laid in the inside of the side ditch groove 5.1 as a side ditch groove water barrier. The geotextile is tightly laid along the inner wall of the side ditch groove 5.1, and the two ends are extended (for example, 50 cm) and inserted into the soil layer to fix the geotextile. The side ditch groove water barrier forms an integral water barrier between the prefabricated wing plate 5.2 and the side ditch groove 5.1, which can effectively prevent the collected water in the side ditch groove 5.1 from seeping into the soil layer again through the gap. After the side ditch groove water barrier is laid, the prefabricated wing plate 5.2 is hoisted and installed.

[0056] The hoisting auxiliary device 5.4 is used to hoist and install the prefabricated wing plate 5.2. The structure of the hoisting auxiliary device 5.4 is shown in Figure 5 The hoisting auxiliary device (5.4) includes an I-beam, which is composed of an I-beam with a length of 1.5 m, a lifting hole welded by the I-beam, and two cables. Two cable holes 5.4.1 are symmetrically welded on the lower flange of the I-beam, and the distance between the two cable holes 5.4.1 is 0.3 m. An elevator hole 5.4.2 is centrally welded on the upper flange of the I-beam. The hoisting and installation of the prefabricated wing plate 5.2 includes:

[0057] As shown in Figure 5 One cable is sequentially passed through one of the embedded lifting points 5.2.2 of the long side of the prefabricated wing plate 5.2, one of the cable holes 5.4.1 of the lower flange of the I-beam, and one of the embedded lifting points 5.2.2 of the short side of the prefabricated wing plate 5.2. The two ends of the cable are fixed to the one of the embedded lifting points 5.2.2 of the long side and the one of the embedded lifting points 5.2.2 of the short side of the prefabricated wing plate 5.2. Another cable is sequentially passed through the other embedded lifting point 5.2.2 of the long side of the prefabricated wing plate 5.2, the other cable hole 5.4.1 of the lower flange of the I-beam, and the other embedded lifting point 5.2.2 of the short side of the prefabricated wing plate 5.2. The two ends of the cable are fixed to the other embedded lifting point 5.2.2 of the long side and the other embedded lifting point 5.2.2 of the short side of the prefabricated wing plate 5.2.

[0058] The precast wing plate 5.2 is lifted through the crane hole 5.4.2. By adjusting the position of the I-beam on the cable, the spatial angle of the precast wing plate 5.2 can be adjusted so that the precast wing plate 5.2 is parallel to the side of the side ditch 5.1 and is installed close to the side of the side ditch 5.1.

[0059] After the precast wing plate 5.2 is installed, the cast-in-place base slab 5.5 is poured. The cast-in-place base slab 5.5 is poured within the inner space of the precast wing plate 5.2, and the pouring height does not exceed the height of the side ditch 5.1, such as one-third of the height of the side ditch 5.1. The cast-in-place base slab 5.5 is constructed using the concrete casting method. After it is formed, the construction of the slope toe 5 is completed. The slope toe 5 integrates three functions:

[0060] 1. The first part serves as the bottom slab of the side ditch (i.e., the cast-in-place bottom slab), which connects the two precast wing plates 5.2 on both sides into a whole to prevent water from seeping into the side ditch and to organize and centrally drain water.

[0061] 2. The second step serves as the toe of each graded slope. Under the self-weight of the large volume of concrete, it is used to reinforce the steps of the graded slope, resist the sliding tendency of the upper soil, and converge the sliding surfaces of each graded slope with the sliding surface of the graded slope 4.2, thus ensuring the stability of the slope.

[0062] 3. The third type serves as the capping beam for the anti-slide pile 3, connecting all the anti-slide piles 3 after the steps of the same slope into a whole, forming a group pile synergistic anti-slide effect. Compared with the individual piles undertaking anti-slide tasks, it enhances the overall anti-slide effect of the anti-slide pile 3 and effectively improves the reinforcement effect of the anti-slide pile 3 on the slope.

[0063] The cast-in-place base slab 5.5 is made of C15 strength concrete with a thickness of 50cm to ensure that the concrete's self-weight can meet the load requirements of the steps, while also meeting the anchorage length of the anti-slide piles 3, thus enhancing the bond strength of the cast-in-place base slab 5.5 to the anti-slide piles 3 on steep slopes. After pouring, it is vibrated and cured. Once the concrete reaches its design strength, the slope is repaired with cement mortar.

[0064] 4. Construction of water collection and drainage ditches

[0065] A drainage slope is formed by arching and slope repair at a specified distance, such as 60m. Figure 6 As shown, the central position of the drainage slope is raised by 10cm from the original concrete top elevation, and then the elevation is uniformly lowered to 0m on both sides for a length of 30m, thus forming a drainage slope, which is conducive to the rapid and organized drainage of the water collection and drainage ditch. At the same time, cement mortar is used to fill the gaps in the overlap of the precast wing plates 5.2.

[0066] The drainage slope formed by the cast-in-place bottom plate 5.5 after the cast-in-place bottom plate 5.5 is constructed with a rise of N4 meters per section, and the first reserved hole 5.2.4 and the second reserved hole 5.2.5 are opened, and the specific steps include:

[0067] The first reserved hole 5.2.4 is opened on one side of the prefabricated wing plate 5.2 in the side ditch groove 5.1 every N7 meters (for example, 10 m) as a slope surface drainage ditch 6, and the second reserved hole 5.2.5 is opened on the other side of the prefabricated wing plate 5.2 in the side ditch groove 5.1 every N8 meters as a side ditch drainage pipe 5.6, that is, for example, as follows:

[0068] At the position of the drainage slope with a rise of 0, near the side of the side ditch drainage pipe 5.6, a hole with a diameter of 20 cm is opened as the second reserved hole 5.2.5 of the side ditch drainage pipe 5.6, and one side ditch drainage pipe 5.6 is arranged every 60 m. A hole with a diameter of 20 cm is opened at the center of the highest point of the slope with a rise of 10 cm, near the side of the slope surface drainage ditch 6, and a hole with a diameter of 20 cm is opened every 10 m to the two sides as the first reserved hole 5.2.4 of the slope surface drainage ditch 6. One slope surface drainage ditch 6 is arranged every 10 m, and the slope surface drainage ditch 6 can be positioned and installed according to the first reserved hole 5.2.4 opened subsequently. The second reserved hole 5.2.5 is connected to the side ditch drainage pipe 5.6 after the drainage pipe extends out of the side slope footing 5, the side ditch drainage pipe 5.6 is a PVC pipe with a diameter of 20 cm, and the side ditch drainage pipe 5.6 extends from the top to the bottom, so that the collected water can be discharged to the lowest position through the side ditch drainage pipe 5.6.

[0069] After the reserved holes are opened, the side slope footing (5) includes the side ditch cover plate 5.7 which is covered on the constructed water collecting and draining side ditch, the side ditch cover plate 5.7 is prefabricated by C30 strength concrete with a thickness of 6 cm, and the side ditch cover plate 5.7 can provide an operation platform for personnel and machinery for subsequent slope surface drainage ditch 6 construction under the support of the prefabricated wing plate 5.2 and the anti-slide pile 3.

[0070] In addition, as shown in the drawings, Figure 6 In some embodiments of the utility model, the first reserved hole 5.2.4 is located above the second reserved hole 5.2.5, and the second reserved hole 5.2.5 is located at the position with a rise of 0 of the drainage slope formed by the slope with a rise.

[0071] 5. Slope surface drainage ditch construction

[0072] The slope drainage ditch also includes a trench. The trench is formed as follows: on each graded slope surface, a trench with a width of 50cm and a depth of 50cm is excavated every N4 (e.g., 10m). The bottom of the trench is fully covered with geotextile, with a width of 70cm for example. A specified height (e.g., 10cm) is laid tightly on each side wall of the trench as a water-proof and seepage-proof layer for the slope drainage ditch 6, effectively ensuring that the collected water is drained in an organized and concentrated manner along the direction of the slope drainage ditch 6.

[0073] A sand cushion layer is laid on the geotextile. Medium sand with a specified fineness modulus of 3.0–2.3 and an average particle size of 0.5–0.35 mm is laid flat along the direction of the slope drainage ditch 6, with a thickness of, for example, 10 cm. A slope drainage pipe is installed in the center of the sand cushion layer as the main channel for water collection and drainage of the slope drainage ditch 6. The lower end of the slope drainage pipe of the slope drainage ditch is inserted into the first reserved hole 5.2.4. After the slope drainage pipe is installed, the remaining space of the slope drainage ditch 6 is filled with graded crushed stone for covering. The slope drainage ditch consists of a layer of 1-30mm graded crushed stone, compacted, a sand cushion layer, slope drainage pipes, and a graded crushed stone covering layer. Pore water in the surface soil seeps into the slope drainage pipes through the voids in the graded crushed stone covering layer under the influence of the water head difference. The drainage is then concentrated and organized along the slope, improving drainage efficiency and reducing uneven settlement and soil erosion caused by uneven drainage consolidation. This also provides a working surface for the later construction of the ecological slope protection structure.

[0074] 6. Construction of Vegetated Concrete Slope Protection Grid

[0075] The combined ecological slope protection structure of "vegetated concrete slope protection grid + ecological interlocking blocks" consists of a slope protection grid 11 made of vegetated concrete prepared according to the concrete mix ratio provided by this utility model, and ecological interlocking blocks 12. Compared with traditional ordinary concrete grid slope protection, the blocks with enhanced ballast can effectively ballast the soil of steep slopes. Compared with ordinary concrete slope protection grids and solid ballast blocks, the "vegetated concrete slope protection grid + ecological interlocking blocks" provides a dual slope protection effect of gravity ballast and soil fixation by plant roots. This not only improves slope stability but also improves and restores the ecological environment through vegetation protection. At the same time, as the plant roots continue to grow, they can reinforce the soil from the source, preventing soil erosion and slope instability.

[0076] In some embodiments of this utility model, the vegetation concrete is constructed by on-site mixing and pouring. The vegetation concrete 10 is made of cement, water and gravel in a specified ratio, with concrete surface enhancer as an admixture, and grass seeds added. The ratio of the vegetation concrete is as follows: cement: water: gravel = 1:0.25:4.5.

[0077] In addition, in some embodiments of the present application, the mode of the slope protection grid 11 formed by the green concrete is as follows: first, the longitudinal grid bars 11.1 and the transverse grid bars 11.2 of the slope protection grid 11 are formed by the green concrete, including:

[0078] A groove with a width of 50 cm and a depth of 50 cm is excavated every N10 meters (for example, 6 m) in the longitudinal and transverse directions of the slope surface, for pouring the slope protection grid 11 of the green concrete. A side formwork is arranged in each groove, the formwork is made of a steel plate, for example, with a height of 65 cm, and a soil layer, for example, with a thickness of 5 cm, is inserted into the formwork for anchoring and fixing the formwork. The formwork is higher than the slope surface by a specified distance (for example, 10 cm) for supporting the green concrete poured above the slope surface.

[0079] The green concrete is poured to form the longitudinal grid bars 11.1 first, and then the transverse grid bars 11.2 are poured. The pouring is performed in sections from bottom to top to prevent the concrete from sliding and segregating due to the steep slope surface. After the green concrete reaches the final setting, watering is performed every specified number of days (for example, 2 days) for curing, which is beneficial to improving the strength of the concrete and promoting the growth of the grass seeds in the pores of the green concrete to timely fill the pores of the green concrete.

[0080] After the green concrete reaches the specified strength, the formwork is removed, and the ecological interlocking blocks 12 are laid in each slope protection grid 11 with a size of, for example, 6 m*6 m, as shown in Figure 7

[0081] 7. Construction of the ecological interlocking block combined slope protection structure

[0082] The shape of the ecological interlocking block 12 is as shown in Figure 8 The ecological interlocking blocks 12 are laid in the form of wedge-shaped and interlocking as shown in the example structure Figure 9 After the ecological interlocking blocks 12 are laid, 2 g of grass seeds (for example, dog tooth grass seeds) are put into the N9 (for example, 5) hollow grass planting holes 12.1 in the middle of each ecological interlocking block 12. The grass seeds have space and path for downward growth through the space of the hollow grass planting hole 12.1, and the ecological interlocking blocks 12 together play a role in protecting the slope and reinforcing the soil body of the slope. At the same time, the interlaced grass roots tightly connect the slope protection grid 11 of the green concrete and the ecological interlocking blocks 12 into a whole, which plays a role in synergistically reinforcing the slope and preventing the slope from being unstable and soil erosion.

[0083] ​The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the above has disclosed preferred embodiments of the present application, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above embodiments based on the technical essence of the present application still belong to the scope of the present application.

Claims

1. A graded protection system for anti-slide piles on high slopes based on a clustered drainage system, wherein, It includes slope drainage pipes (5.6), slope protection grid (11) made of planted concrete, and steps set on the steep soil slope at an elevation of 30 meters, with an anti-slide pile (3) set every 5 meters on each step. Each step is also provided with a slope anchor (5), which includes a ditch (5.1) excavated on the step and a cast-in-place base slab (5.5) poured in the ditch (5.1). A precast wing plate (5.2) is installed on the side of the ditch (5.1), and multiple pre-embedded lifting points (5.2.2) are provided on the precast wing plate (5.2) on the side of each ditch (5.1). A first reserved hole (5.2.4) and a second reserved hole (5.2.5) are respectively opened on the precast wing plate (5.2) on the side of each ditch (5.1). Slope drainage ditches are excavated every 10 meters on the slope surface above each step. The slope drainage ditches include slope drainage pipes. The lower end of the slope drainage pipes is provided with a first reserved hole (5.2.4). The second reserved hole (5.2.5) is connected to the side ditch drainage pipe (5.6) through a drainage pipe. The slope protection grid (11) is paved with multiple ecological interlocking blocks (12), which are laid in a wedge-fitting and interlocking manner. Each ecological interlocking block (12) has 5 empty grass planting holes (12.1) filled with grass seeds, and the planted concrete contains grass seeds.

2. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to claim 1, wherein, The anti-slide pile (3) passes through the graded slope sliding surface (4.2), wherein the top elevation of the anti-slide pile (3) is level with the step on which it is located.

3. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to claim 1, wherein, The precast wing plate (5.2) is L-shaped, and the angle between the side and the bottom edge is the same as the angle of the side ditch (5.1). The precast wing plate (5.2) is made of precast concrete.

4. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to claim 3, wherein, The corner of the precast wing plate (5.2) is provided with a wing plate reinforcing corner (5.2.3), and the corner is set as an arc-shaped inner corner; a wing plate stiffening rib (5.2.1) is provided on the inner side of each precast wing plate (5.2) at 1 meter intervals, and the wing plate stiffening rib (5.2.1) and the precast wing plate (5.2) are integrally cast and formed.

5. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to claim 4, wherein, Each prefabricated wing plate (5.2) is equipped with 4 pre-embedded lifting points (5.2.2), which are arranged evenly and symmetrically in space. The distance of each of the 4 pre-embedded lifting points (5.2.2) from the longitudinal axis of symmetry is 1 meter.

6. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to claim 5, wherein, The inner side of the ditch (5.1) is fully covered with geotextile as a water-proof layer for the ditch. The geotextile is laid tightly along the inner wall of the ditch (5.1), with both ends extending out and inserted into the soil layer. The geotextile side ditch waterproof layer is located between the precast wing plate (5.2) and the side ditch (5.1).

7. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to claim 6, wherein, The precast wing plate (5.2) is hoisted and installed using a hoisting auxiliary device (5.4). The hoisting auxiliary device (5.4) includes an I-beam and two cables. Two cable holes (5.4.1) are symmetrically welded on the lower flange of the I-beam, and one crane hole (5.4.2) is welded in the center of the upper flange of the I-beam. One of the cables passes through one of the pre-embedded lifting points (5.2.2) on the long side of the precast wing plate (5.2), one of the cable holes (5.4.1) on the lower flange of the I-beam, and one of the pre-embedded lifting points (5.2.2) on the short side of the precast wing plate (5.2). The two ends of the cable are fixed to one of the pre-embedded lifting points (5.2.2) on the long side and one of the pre-embedded lifting points (5.2.2) on the short side of the precast wing plate (5.2). Another cable passes through another pre-embedded lifting point (5.2.2) on the long side of the precast wing plate (5.2), another cable hole (5.4.1) on the lower flange of the I-beam, and another pre-embedded lifting point (5.2.2) on the short side of the precast wing plate (5.2). The two ends of the cable are fixed to another pre-embedded lifting point (5.2.2) on the long side and another pre-embedded lifting point (5.2.2) on the short side of the precast wing plate (5.2).

8. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to any one of claims 1-7, wherein, The cast-in-place base slab (5.5) has an arched drainage slope in 10-meter sections.

9. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to any one of claims 1-7, wherein, The second reserved hole (5.2.5) is located at the elevation 0 of the drainage slope, and the first reserved hole (5.2.4) is located above the second reserved hole (5.2.5).

10. The graded protection system for anti-slide piles on high slopes based on a clustered drainage system according to any one of claims 1-7, wherein, The slope drainage ditch also includes a trench, the bottom of which is fully covered with geotextile, and geotextile of a specified height is laid tightly on each of the two sides of the trench wall. A sand cushion layer is laid on the geotextile, and the slope drainage pipe is installed in the center of the sand cushion layer. The remaining space of the slope drainage ditch (6) is filled with a graded crushed stone covering layer.

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