Water collecting and draining side ditch considering high slope grading step foot stopping
By adopting a combined structure of precast wing plates, cast-in-place base plates, and anti-slide piles on high slopes, the problem of insufficient space for graded step toeing and water collection and drainage ditches was solved, thereby improving the stability and drainage efficiency of the slope.
Patent Information
- Application Number
- CN202520570512.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-28
AI Technical Summary
On high slopes, existing technologies struggle to effectively balance the toe support of graded steps with the drainage ditches for water collection, resulting in insufficient space, increased costs, and compromised slope stability.
The structure adopts a combination of precast wing plates, cast-in-place base plates, anti-slide piles, and water collection and drainage ditches. The connection between the precast wing plates and the anti-slide piles forms an overall anti-slide effect, and a water collection and drainage system is set up to ensure slope stability and drainage efficiency.
This approach enhances slope stability and improves the efficiency of the drainage system, reduces space requirements, lowers construction costs, and enhances the long-term stability and construction efficiency of the slope.
Smart Images
Figure CN223951812U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of building engineering construction, especially relate to a water collecting and draining side ditch with high slope grading step footing. BACKGROUND
[0002] There are high soil slopes on both sides of highways, waterways and other infrastructures. Compared with high rock slopes, high soil slopes are more likely to cause landslides, collapse and slope instability during periods of heavy rainfall or when disturbed during construction and operation. At the same time, the vegetation in the slope area is destroyed due to infrastructure construction, and the lack of vegetation or the reduction of vegetation under human development influence leads to an increase in the water content of the slope soil during heavy rainfall, forming a water-rich high slope, which is not conducive to construction during the rainy season. High slopes are prone to soil erosion under the combined action of rainfall and solarization weathering, which is not conducive to the long-term stability of high slopes. Therefore, it is necessary to reinforce and protect the high soil slopes on both sides of highways, waterways and other infrastructures.
[0003] When reinforcing and protecting the slope, a footing and a drainage ditch need to be set at the bottom, and a footing and a water collecting ditch need to be set at the step of a multi-stage slope to collect runoff from the upper stage of the slope through the water collecting ditch, thereby reducing the kinetic energy of the water flow and preventing the water flow from eroding the slope too quickly. The footing serves as an anti-skid resistance structure, and its self-weight needs to meet the requirements, so it occupies a large space at the step. When arranging the water collecting ditch at the step, there is not enough space, and expanding the width of the step requires increasing the slope ratio, which is not conducive to the stability of the slope and increases the cost.
[0004] Therefore, there is an urgent need for a water collecting and draining side ditch with high slope grading step footing to solve the above technical problems. CONTENT OF THE UTILITY MODEL
[0005] To solve the above problems, the utility model provides a water collecting and draining side ditch with high slope grading step footing, which comprises a slope footing. The slope footing is graded on a high and steep soil slope, and each step of the multi-stage step comprises a prefabricated wing plate, a cast-in-place bottom plate, a side ditch cover plate, an anti-skid pile and a water collecting and draining side ditch groove.
[0006] The side ditch groove and the anti-skid pile are arranged on the corresponding step. One anti-skid pile is arranged every N3 meters on the step, and the anti-skid pile penetrates the side ditch groove and passes through the slip surface of the graded slope.
[0007] The prefabricated wing plate is installed on the side of the side ditch groove. The angle between the side and the bottom of the prefabricated wing plate is the same as the angle of the side ditch groove. A plurality of embedded lifting points are arranged on the prefabricated wing plate. A plurality of wing plate stiffening ribs are arranged on the inner side of the prefabricated wing plate.
[0008] The cast-in-place bottom plate is cast in the inner space of the prefabricated wing plate.
[0009] The edge ditch cover plate covers the edge ditch groove.
[0010] Further, the prefabricated wing plate is L-shaped, and the prefabricated wing plate is provided with a wing plate reinforced corner at a corner of the structure, and an arc-shaped inner corner is formed at the corner.
[0011] Further, first and second reserved holes are respectively formed in the prefabricated wing plate of the side edge in each edge ditch groove, and the first reserved hole is located above the second reserved hole.
[0012] Further, it further comprises an edge ditch drain pipe, the second reserved hole is communicated with the edge ditch drain pipe through the drain pipe, and the first reserved hole is communicated with a slope surface drain ditch arranged on the slope surface above the corresponding step.
[0013] Further, the top of the anti-slide pile is flush with the step.
[0014] Further, the inside of the edge ditch groove is fully paved with geotextile as a water barrier layer of the edge ditch groove.
[0015] Further, the geotextile is tightly and fully paved along the inner wall of the edge ditch groove, and the two ends are inserted into the soil layer.
[0016] Further, the wing plate stiffening rib is integrally formed with the prefabricated wing plate.
[0017] Further, each prefabricated wing plate is provided with four embedded lifting points, which are uniformly and symmetrically arranged, and the distance between the four embedded lifting points and the longitudinal symmetry axis is N6 meters.
[0018] Further, every N4 meters of the cast-in-place bottom plate is a section of drainage slope formed by arching and sloping, and the second reserved hole is located at the elevation 0 position of the drainage slope.
[0019] The beneficial effects of the utility model lie in:
[0020] 1. As the edge ditch bottom plate (i.e. cast-in-place bottom plate) for collecting and draining water, the two prefabricated wing plates are connected to form a whole, preventing the edge ditch from infiltrating and organizing and concentrating drainage.
[0021] 2. As the foot of each level of the graded slope, the foot is used to reinforce the step of the graded slope under the self-weight of the mass concrete, resists the sliding trend of the upper soil body, converges the sliding surface of each level of the slope and the sliding surface of the graded slope, and plays a role of guaranteeing the stability of the slope.
[0022] 3. As the crown beam of the anti-slide pile, all the anti-slide piles of the step of the same slope after grading are connected to form a whole, forming the effect of group pile cooperative anti-slide, compared with the single pile bearing the anti-slide task respectively, the overall anti-slide effect of the anti-slide pile is enhanced, and the reinforcing effect of the anti-slide pile on the slope is effectively improved.
[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 A schematic diagram of the structure after the slope toe construction is completed according to an embodiment of the present invention is shown;
[0026] Figure 2 A detailed structural schematic diagram of the slope anchor toe according to an embodiment of the present invention is shown;
[0027] Figure 3 A schematic diagram of the structure of the graded excavation of a steep slope and the slope slip surface according to an embodiment of the present invention is shown;
[0028] Figure 4 A schematic diagram of the hoisting auxiliary device according to an embodiment of the present invention is shown;
[0029] Figure 5 A top view of the step working plate and anti-slide pile according to an embodiment of the present invention is shown;
[0030] Figure 6 An embodiment of the present utility model is shown. Figure 2 A schematic diagram of the structure of the slope drainage pipe and slope drainage ditch in the lateral direction. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0032] This utility model provides a drainage ditch that also accommodates the toe of a stepped, tiered slope. Specifically, in this drainage ditch, such as... Figure 1 As shown, the slope toe 5 is set on each of the multi-level steps of a steep soil slope, such as... Figure 2 As shown, the slope toe 5 includes: a precast wing slab 5.2, a cast-in-place base slab 5.5, a ditch cover 5.7, anti-slide piles 3, a ditch channel 5.1, and a ditch drainage pipe 5.6, wherein:
[0033] The side ditch 5.1 and anti-slide piles 3 are both installed on the corresponding steps, with one anti-slide pile 3 installed every N3 meters on the steps, and as follows... Figure 3 As shown, the anti-slide pile 3 penetrates the side ditch 5.1 and passes through the graded slope sliding surface 4.2; the precast wing plate 5.2 is installed on the side of the side ditch 5.1, and the angle between the side and bottom of the precast wing plate 5.2 is the same as the angle of the side ditch 5.1; the precast wing plate (5.2) is provided with multiple pre-embedded lifting points 5.2.2; multiple wing plate stiffening ribs 5.2.1 are placed at intervals on the inner side of the precast wing plate 5.2, and the wing plate stiffening ribs 5.2.1 are integrally formed with the precast wing plate 5.2; the cast-in-place base plate 5.5 is poured in the inner space of the precast wing plate 5.2, and the pouring height is specified and 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 side ditch cover plate 5.7 covers the side ditch 5.1.
[0034] like Figure 4 As shown, the prefabricated wing plate 5.2 is L-shaped, such as... Figure 2 As shown, the prefabricated wing plate 5.2 has a wing plate reinforcement corner 5.2.3 at the corner of the structure, forming an arc-shaped inner corner; each prefabricated wing plate 5.2 has 4 pre-embedded lifting points 5.2.2, which are evenly and symmetrically arranged in space. The distance of the 4 pre-embedded lifting points 5.2.2 from the longitudinal axis of symmetry is N6 meters. During hoisting, the cables are connected through the 4 pre-embedded lifting points.
[0035] Each precast wing plate 5.2 on the side of each side ditch 5.1 is provided with a first reserved hole 5.2.4 and a second reserved hole 5.2.5. The first reserved hole 5.2.4 is located above the second reserved hole 5.2.5. The second reserved hole 5.2.5 is connected to the side ditch drainage pipe 5.6 through a drainage pipe. The first reserved hole 5.2.4 is connected to the slope drainage ditch 6 set on the slope surface above the corresponding step.
[0036] like Figure 4 As shown, each prefabricated wing plate 5.2 is equipped with 4 pre-embedded lifting points 5.2.2, which are evenly and symmetrically arranged in space. The distance of each of the 4 pre-embedded lifting points 5.2.2 from the longitudinal axis of symmetry is N6 meters. During hoisting, the cables are connected through the 4 pre-embedded lifting points.
[0037] The present invention will now be described in detail.
[0038] In some embodiments of this utility model, the anti-slide piles 3 are installed using bored cast-in-place piles, with one anti-slide pile 3 set every N3 meters along the direction of the step. An example is given below:
[0039] Lay step work slabs 2 on the graded multi-level steps (e.g., level 1 step 1.1, level 2 step 1.2, level 3 step 1.3), such as... Figure 5 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 for steep slopes. 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 3 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.
[0040] In some embodiments of this utility model, the drainage ditch 5.1 is excavated on each step using the "reverse method". Specifically, after the excavator is in place, a step working plate 2 in front of the excavator bucket is removed, and the drainage ditch 5.1 is excavated. After the excavation is completed, the excavator moves back by the step working plate 2 and continues to excavate. After the excavation is completed, the sides of the drainage ditch 5.1 are flattened and compacted to provide a foundation for the installation of the precast wing plate (5.2).
[0041] In some embodiments of this utility model, before installing the precast wing plate 5.2, geotextile is fully laid on the inner side of the ditch 5.1 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 (for example, 50cm) and inserted into the soil layer to fix the geotextile. The water-proof layer of the ditch forms an integral water barrier between the precast wing plate 5.2 and the ditch 5.1, which can effectively prevent water collected in the ditch 5.1 from seeping back into the soil layer along the gaps. After the water-proof layer of the ditch is laid, the precast wing plate 5.2 is hoisted and installed.
[0042] In some embodiments of the utility model, prefabricated wing plate can adopt height 1m, bottom edge length 0.2m, prefabricated wing plate 5.2 main body thickness 6cm, adopt the concrete prefabrication of strength not less than C30, ensure that the strength of lightweight component meets the requirement. Prefabricated wing plate 5.2 is provided with wing plate reinforced corner 5.2.3 at the corner of structure, and the thickness is 15cm, by forming the arc-shaped inner corner at the corner, the structural strength of prefabricated wing plate 5.2 at the turning position is increased, and the damage of weak position of component strength caused by bumping in the process of hoisting and installation is avoided.
[0043] For the convenience of hoisting and installation on site, the length of each prefabricated wing plate 5.2 can be set to 3m, and one wing plate stiffening rib 5.2.1 is arranged at the inner side of each prefabricated wing plate 5.2 at intervals of N5m (for example, 1m), that is, two wing plate stiffening ribs 5.2.1 are uniformly arranged on each prefabricated wing plate 5.2, the thickness of the wing plate stiffening rib 5.2.1 is 5cm, and the width is 20cm, which is used to enhance the structural strength of the long side of the prefabricated wing plate 5.2, so as to avoid the concrete cracking of the long side of the prefabricated wing plate 5.2 caused by bumping in the process of hoisting and installation. When prefabricating the prefabricated wing plate 5.2, the wing plate stiffening rib 5.2.1 is integrally poured and prefabricated with the prefabricated wing plate 5.2 to form a whole.
[0044] In order to facilitate the hoisting and installation of the prefabricated wing plate 5.2, the four embedded lifting points 5.2.2 (the utility model takes four as an example for description) are all N6m (for example, 1m) away from the longitudinal symmetry axis, at this time, the two embedded lifting points 5.2.2 at the upper part are 5cm away from the long upper edge line, the two embedded lifting points 5.2.2 at the lower part are 10cm away from the short side outer edge line, and when hoisting, the cable is hoisted through the four embedded lifting points, so as to adjust the spatial orientation of the prefabricated wing plate 5.2, and make the prefabricated wing plate 5.2 be able to be installed closely to the edge ditch groove 5.1.
[0045] The utility model can adopt some hoisting auxiliary devices to hoist and install the prefabricated wing plate 5.2 through the embedded lifting point 5.2.2, and the structure of the hoisting auxiliary device can adopt the existing device, which will not be described in detail here.
[0046] In some embodiments of the utility model, after the prefabricated wing plate 5.2 is installed, the cast-in-place bottom plate 5.5 is poured, the cast-in-place bottom plate 5.5 adopts the construction method of concrete cast-in-place, for example, the cast-in-place bottom plate 5.5 is poured by using C15 strength concrete, and the thickness is 50cm, so that the cast-in-place bottom plate 5.5 is poured in the inner side space of the prefabricated wing plate 5.2, so as to ensure that the dead weight of concrete can meet the ballast requirement of the step, and at the same time, the anchoring length of the anti-slide pile 3 is met, and the gripping force of the cast-in-place bottom plate 5.5 on the anti-slide pile 3 is enhanced.
[0047] After pouring, vibrating and curing, after the concrete reaches the design strength, the cement mortar is used to form a drainage slope by arching and sloping every N4m (for example, 60m) on the cast-in-place bottom plate 5.5, for example,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.
[0048] In some embodiments of this utility model, such as Figure 1 and 2 As shown, after the cast-in-place base slab 5.5 is constructed, a first reserved hole 5.2.4 as a slope drainage ditch 6 and a second reserved hole 5.2.5 as a side ditch drainage pipe 5.6 are respectively opened on the precast wing plate 5.2 on the side of each side ditch 5.1 to form the slope toe 5, wherein the first reserved hole 5.2.4 is located above the second reserved hole 5.2.5. An example is given below:
[0049] like Figure 6 As shown, at the position where the drainage slope elevation of the arched slope is 0, a hole with a diameter of 20cm is opened on the side near where the side ditch drainage pipe 5.6 is laid, as the second reserved hole 5.2.5 of the side ditch drainage pipe 5.6. On the corresponding precast wing plate 5.2, a side ditch drainage pipe 5.6 is set every N8 meters, for example, 60m. Centered on the highest point of the arched slope, for example 10cm, a hole with a diameter of 20cm is opened on one side near the slope drainage ditch 6. A hole with a diameter of 20cm is then opened every N7 meters (e.g., 10m) on both sides, serving as the first reserved hole 5.2.4 for the slope drainage ditch 6. The first reserved hole 5.2.4 is located above the second reserved hole 5.2.5. Subsequently, the slope drainage ditch 6 can be positioned and installed according to the first reserved hole 5.2.4. A drainage pipe extends out from the slope toe 5 through the second reserved hole 5.2.5 and connects to the side ditch drainage pipe 5.6. The side ditch drainage pipe 5.6 is a 20cm diameter PVC pipe that extends from top to bottom, allowing collected water to be discharged to the lowest point.
[0050] After all the reserved holes are opened, the side ditch cover plate 5.7 is placed on the completed water collection and drainage side ditch (i.e., the side ditch channel 5.1). The side ditch cover plate 5.7 is made of 6cm thick C30 strength concrete. With the support of the precast wing plate 5.2 and the anti-slide pile 3, the side ditch cover plate 5.7 can provide a working platform for personnel and machinery for the subsequent construction of the slope drainage ditch 6.
[0051] In addition, in this utility model, before the construction of the slope toe, a step of graded excavation of the steep slope is required, namely: on the steep soil slope at elevation N1 meters, a step is set every N2 meters below the elevation, and a step work board 2 is laid on each step. An example is given below:
[0052] The overall protection and reinforcement of high and steep soil slope high slope is difficult to design and construct, the slope slip surface range of high and steep soil slope is large, the anchoring device needs to pass through the slope slip surface when the overall protection and reinforcement is carried out, and the gravity of the slope surface ballast device is required to be large to meet the overall stability requirement of the slope surface, the amount of slope protection material is large, which is not conducive to the long-term stability of high and steep slope and does not meet the requirements of green construction and resource saving.
[0053] Therefore, the high and steep soil slope is divided into several small slopes by setting the slope grading steps, as shown in Figure 1 and 3 , and the slope reinforcement is carried out respectively. In the vertical direction of the high and steep soil slope, a slope grading step is set at each interval of the elevation.
[0054] Taking a high and steep soil slope with an elevation of 30m as an example, it is illustrated that a first step is set at each interval of 8m of the elevation from the top of the slope, that is, the first step 1.1 is set at the elevation of 22m, the small slope separated above the first step is a first slope, the second step 1.2 is set at the elevation of 14m, the small slope separated above the second step is a second slope, and the third step 1.3 is set at the elevation of 6m, and the small slope separated above the third step is a third slope. The width of the slope grading step 1 is 1.5m, the excess soil above each step is cut off, the slope surface is flattened, and a plurality of small slopes are formed. The slope grading step integrates multiple purposes: as a boundary of the high and steep soil slope grading, the high and steep soil slope is separated into a plurality of small slopes, and can be used as a working surface for construction operation, provides a position for personnel and mechanical operation, provides a pile sinking position for the anti-slide pile 3 of the high and steep slope, and is used as a small slope foot stabilizing and edge ditch placement area for water collection and drainage, and the limited horizontal area of the slope surface is used to the maximum extent.
[0055] In addition, in some embodiments of the utility model, the slope drainage ditch includes a ditch, a slope drainage pipe, a sand cushion layer and a graded gravel covering layer, the ditch is excavated on each grading slope surface, and a ditch with a width of, for example, 50cm and a depth of, for example, 50cm is excavated at each interval of N4 (for example, 10m), the bottom of the ditch is fully paved with geotextile, the width of the geotextile is, for example, 70cm, and a specified height (for example, 10cm) is tightly paved on the two side walls of the ditch as a water-proof and anti-seepage layer of the slope drainage ditch 6, so that the water collection is effectively guaranteed to be organized and concentrated along the direction of the slope drainage ditch 6.
[0056] The geotextile is laid with a sand cushion, and the 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 along the slope surface drainage ditch 6, for example, with a thickness of 10 cm; the slope surface drainage pipe is centrally installed on the sand cushion, and the lower end of the slope surface drainage pipe of the slope drainage ditch is inserted into the first reserved hole 5.2.4 as the main channel for collecting and draining the slope surface drainage ditch 6; after the slope surface drainage pipe is installed, the remaining space of the slope surface drainage ditch 6 is filled with a graded gravel cover layer, and the graded gravel with a size of 1-30 mm is filled and compacted, and the pore water in the surface soil layer of the slope is infiltrated into the slope surface drainage pipe through the voids in the graded gravel cover layer of the slope surface drainage ditch under the action of the water head difference, and the concentrated and organized drainage along the slope surface is completed through the slope surface drainage pipe, so that the slope drainage efficiency is improved, and the uneven settlement of the slope surface and the soil erosion caused by uneven drainage consolidation are reduced. The later stage also provides a working surface for the construction of the ecological slope protection structure.
[0057] The slope foot 5 is constructed by using a combined structure construction method of "precast wing plate + cast-in-place bottom plate" combined with "assembly type + post-pouring type", the wing plates on both sides of the side ditch for collecting and draining water are assembly type concrete components, and the bottom plate is cast-in-place concrete, so that the inconvenience of hoisting caused by the self-weight of the whole precast component is avoided, the complex processes of formwork, maintenance and form removal of the side ditch side wing plate during whole cast-in-place are avoided, the construction efficiency is improved, and the construction period is saved. Moreover, the following three functions are integrated:
[0058] 1. As the side ditch bottom plate (i.e. cast-in-place bottom plate) for collecting and draining water, the two side precast wing plates 5.2 are connected to form a whole, so as to prevent the side ditch from infiltrating and draining water in an organized manner.
[0059] 2. As the foot of each level of the graded slope, the foot is used to reinforce the steps of the graded slope under the action of the self-weight of the mass concrete, resist the sliding trend of the upper soil body, converge the sliding surfaces of the levels of the slope and the sliding surface 4.2 of the graded slope, and play a role of ensuring the stability of the slope.
[0060] 3. As the crown beam of the anti-slide pile 3, the crown beam connects all the anti-slide piles 3 of the steps of the graded slope to form a whole, so as to form the effect of group pile cooperative anti-slide, compared with the single pile bearing the anti-slide task, the overall anti-slide effect of the anti-slide pile 3 is enhanced, and the reinforcing effect of the anti-slide pile 3 on the slope is effectively improved.
[0061] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the 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 water collecting and draining side ditch with high slope grading step footing, wherein, The application relates to a slope footing (5) arranged on each step of a stepped slope of a high and steep soil slope, the slope footing (5) comprising a prefabricated wing plate (5.2), a cast-in-place bottom plate (5.5), a ditch cover plate (5.7), an anti-skid pile (3) and a ditch groove (5.1) for water collection and drainage, wherein, The ditch groove (5.1) and the anti-skid pile (3) are arranged on the corresponding step, one anti-skid pile (3) is arranged every N3 meters on the step, and the anti-skid pile (3) penetrates the ditch groove (5.1) and passes through the stepped slope slip surface (4.2); The prefabricated wing plate (5.2) is arranged on the side of the ditch groove (5.1), the angle between the side and the bottom of the prefabricated wing plate (5.2) is the same as the angle of the ditch groove (5.1), a plurality of embedded lifting points (5.2.2) are arranged on the prefabricated wing plate (5.2), and a plurality of wing plate stiffening ribs (5.2.1) are arranged on the inner side of the prefabricated wing plate (5.2). The cast-in-place bottom plate (5.5) is poured into the inner side space of the prefabricated wing plate (5.2). The ditch cover plate (5.7) covers the ditch groove (5.1).
2. The water collecting and draining side ditch with high slope grading step footing according to claim 1, wherein, The prefabricated wing plate (5.2) is L-shaped, a wing plate reinforced corner (5.2.3) is arranged at the corner of the prefabricated wing plate (5.2), and an arc-shaped inner corner is formed at the corner.
3. The water collecting and draining side ditch with high slope grading step footing according to claim 1, wherein, First and second reserved holes (5.2.4 and 5.2.5) are respectively arranged on the prefabricated wing plate (5.2) on the side of each ditch groove (5.1), and the first reserved hole (5.2.4) is located above the second reserved hole (5.2.5).
4. The water collecting and draining side ditch with high slope grading step footing according to claim 3, wherein, A ditch drainage pipe (5.6) is further arranged, the second reserved hole (5.2.5) is communicated with the ditch drainage pipe (5.6) through a drainage pipe, and the first reserved hole (5.2.4) is communicated with a slope surface drainage ditch (6) arranged on the slope surface above the corresponding step.
5. The water collecting and draining side ditch with high slope grading step footing according to claim 3, wherein, The top of the anti-skid pile (3) is flush with the step.
6. The water collecting and draining side ditch with high slope grading step footing according to any one of claims 3-5, wherein, The inner side of the ditch groove (5.1) is fully paved with geotextile as a ditch groove water barrier.
7. The water collecting and draining side ditch with high slope grading step footing according to claim 6, wherein, The geotextile is tightly and fully paved along the inner wall of the ditch groove (5.1), and the two ends of the geotextile are inserted into the soil layer.
8. The water collecting and draining side ditch with high slope grading step footing according to any one of claims 3-5, wherein, The wing plate stiffening rib (5.2.1) is integrally formed with the prefabricated wing plate (5.2).
9. The water collecting and draining side ditch with high slope grading step footing according to any one of claims 3-5, wherein, Four embedded lifting points (5.2.2) are arranged on each prefabricated wing plate (5.2), and the four embedded lifting points (5.2.2) are symmetrically arranged at a distance of N6 meters from the longitudinal symmetry axis.
10. The water collecting and draining side ditch with high slope grading step footing according to any one of claims 3-5, wherein, The cast-in-place bottom plate (5.5) is provided with a drainage slope formed by a cambered slope every N4 meters, and the second reserved hole (5.2.5) is located at the elevation 0 position of the drainage slope.