Water conservancy riverway engineering slope protection structure and construction method thereof

Abstract

The application discloses a water conservancy river engineering slope protection structure, which comprises a slope protection and a road on one side of the slope protection, and further comprises an anchoring part, wherein the anchoring part comprises a base stone and first and second anchor rods which are embedded in the interior of each step, the second anchor rod can not only tighten the step surface but also provide axial traction to the first anchor rod; and drainage channels are arranged on both sides of the road along the slope protection inclination direction. The application relates to the technical field of water conservancy facilities, and adopts the cross anchoring structure formed by the first anchor rod and the second anchor rod, a cross channel is preset in the base stone, and the two anchor rods are stably cross-fixed in the interior of the base stone. The cross anchoring structure can effectively resist the vertical pressure from above the slope protection, the water flow thrust parallel to the slope surface and the soil body sliding force. The drainage channels are combined with the drainage pipelines laid on the slope protection, can actively and quickly collect the rainwater and runoff on the surface of the slope protection, and significantly reduce the direct scouring and erosion on the soil of the slope protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy facilities, in particular to a water conservancy river engineering slope protection structure and a construction method thereof. BACKGROUND

[0002] In the field of water conservancy, transportation and civil engineering, river slope protection is an important engineering measure to prevent water and soil loss, stabilize the river bank and ensure flood safety. In the construction process of slope protection, in order to stably connect the gabion net retaining wall, terrace and slope body foundation into a whole, prevent sliding and collapse under the action of water flow scouring or its own gravity, it is usually necessary to set anchor rods for soil fixation. However, in the existing anchoring technology, a single anchor rod is generally used for anchoring. The single anchor rod anchoring method is prone to tilting, which not only weakens the uplift resistance of the anchor rod itself, but also causes eccentric force at the connection point of the anchor rod and the gabion net retaining wall and other structures, thereby greatly reducing the overall anchoring effect and structural stability.

[0003] For example, when rainwater or surface runoff directly penetrates and discharges through the surface or inside of the slope protection in disorder, it is easy to cause the water flow to form overland flow on the slope surface, directly and concentratedly scouring the surface soil and fillers. When hidden water and soil loss occurs, the slope protection structure not only bears the vertical pressure from above, but also bears the strong water flow thrust and soil body sliding force, i.e. shear force, parallel to the slope surface. The single anchor rod mainly provides axial uplift resistance, and has limited ability to resist such shear force. When the slope protection is subjected to a large horizontal load due to the rapid downward flow of water, the single anchoring point is easy to cause the anchor rod to be sheared off, thereby causing the sliding or collapse of the slope protection structure. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a water conservancy river engineering slope protection structure and a construction method thereof, which solves the problem that the existing slope protection is easy to cause water and soil loss due to water flow scouring, and then the single anchoring point is easy to cause the anchor rod to be sheared off, thereby causing the sliding or collapse of the slope protection structure.

[0005] To achieve the above-mentioned purpose, the present application is implemented by the following technical scheme: a water conservancy river engineering slope protection structure, the slope protection structure comprises a slope protection and a road on one side of the slope protection, the road comprises a road, the slope protection comprises a plurality of terraces continuously formed on a slope body, a gabion net retaining wall is arranged on each terrace, each terrace comprises a terrace surface one arranged in a first direction and a terrace surface two arranged in a second direction, each terrace surface one and two are connected end to end, and the gabion net retaining wall is arranged on the terrace surface one and is attached to the terrace surface two on the inner side.

[0006] The slope protection structure further comprises an anchor, the anchor comprises a base stone embedded in the interior of each step, and a first anchor rod and a second anchor rod, the first anchor rod is vertically inserted into the step on the first step surface and fixed on the base stone, and the second anchor rod is horizontally inserted into the step on the second step surface and fixed on the base stone; the second anchor rod can not only tighten the second step surface, but also provide axial traction to the first anchor rod.

[0007] The top of the first anchor rod is provided with a cap stone, and the cap stone is located on the front side of the gabion net retaining wall.

[0008] Drainage channels are arranged on both sides of the row in the slope inclination direction; ecological frames are arranged on the first step surface, and a gap cavity is formed between the ecological frames and the cap stone; a drainage pipeline is arranged in the gap cavity, the end of the drainage pipeline is inserted into the drainage channel, and a plurality of openings for liquid inlet are formed on the drainage pipeline.

[0009] Preferably, the base stone is a strip-shaped concrete base block, through holes for the first anchor rod to pass through are formed on both sides of the base stone, and a through cavity for the second anchor rod to pass through is formed in the base stone from the front side to the back side, and the through hole and the through cavity are communicated.

[0010] Preferably, a gravel layer is arranged on the first step surface, and the gabion net retaining wall is arranged on the gravel layer; the surface of the first step surface is inclined upward from the outside to the inside to form a lower inclined surface for water flow outward; the top surface of the gravel layer is inclined downward from the outside to the inside to form an upper inclined surface, and the gabion net retaining wall is inclined inward and attached to the first step surface.

[0011] Preferably, one side of the cap stone towards the inside is formed with a protruding part, the protruding part is triangular and abuts against the gravel layer; a soil protection baffle is arranged at the inner edge of the first step surface, and the second anchor rod penetrates through the soil protection baffle.

[0012] The front side of the soil protection baffle is recessed inward to form an arc-shaped recessed part, an arched clamping cavity is formed between the arc-shaped recessed part and the protruding part, and the gravel layer is arranged in the arched clamping cavity.

[0013] Preferably, a drainage gap is formed between two adjacent cap stones, and a retaining stone net is arranged on the inner side of the drainage gap.

[0014] Preferably, the drainage pipe includes an upper horizontal pipe and a lower horizontal pipe arranged parallel to each other. The upper horizontal pipe and the lower horizontal pipe are respectively arranged on the first step of each step of the platform. The two ends of the upper horizontal pipe and the lower horizontal pipe are inserted into the drainage ditch. A vertical pipe connects the upper horizontal pipe and the lower horizontal pipe. Each vertical pipe and the connected upper horizontal pipe and the lower horizontal pipe form an "I" shape structure. The two adjacent vertical pipes and the upper and lower horizontal pipes at the top and bottom enclose an enclosed area where a gabion retaining wall can be placed.

[0015] Preferably, the opening is formed on the top surface of the upper and lower transverse pipes, and a mesh tube is installed through the opening. A retaining ring is provided on the outer side of the portion of the mesh tube inside the opening, and a buoyancy element is provided on the portion of the mesh tube outside the opening.

[0016] Preferably, the outer wall of the drainage ditch has a strip-shaped groove along its length, the upper transverse pipe and the lower transverse pipe are inserted into the strip-shaped groove, and a baffle is provided on the outside of the insertion end, the baffle covering the strip-shaped groove.

[0017] A construction method for slope protection structures in water conservancy river engineering includes the following steps:

[0018] S1. Plan the road and slope protection area; build the road and drainage ditch in the road; process the steps in the slope protection to form a continuous step surface.

[0019] S2. Excavate holes and pre-embed foundation stones on each step. Insert the first anchor rod longitudinally at one point on each step and penetrate the pre-embedded foundation stone. Insert the second anchor rod transversely at two points on each step and penetrate the pre-embedded foundation stone. Fix the cap stone at the end of the first anchor rod and place a stone retaining net. Fix the anchor rod cap at the end of the second anchor rod.

[0020] S3. Lay a layer of crushed stone on the first step and place the gabion retaining wall on the crushed stone layer;

[0021] S4. Fix the ecological frame at the junction of the step and the gabion retaining wall;

[0022] S5. Lay drainage pipes and connect them to the drainage ditch.

[0023] Preferably, in step S2, when excavating the hole for embedding the base stone, the transverse hole for inserting the second anchor rod into the base stone is excavated along the two transverse directions of the step surface; when backfilling the hole for embedding the base stone, the first core rod inserted into the through hole is placed along the hole, and the core rod inserted into the strip-shaped slot is placed along the transverse hole; after backfilling the hole and the transverse hole, all the core rods are pulled out, cement mortar is poured on the hole until the pouring is stopped when the cement mortar flows out of the transverse hole, and the first anchor rod and the second anchor rod are inserted into the hole and the transverse hole after grouting to the predetermined position, and the first anchor rod, the second anchor rod and the base stone are fixed into one body after 24 hours of solidification.

[0024] The beneficial effects of the present application are as follows: compared with the prior art, the intersecting anchoring structure formed by the first anchor rod and the second anchor rod is used, the intersecting channel is pre-set in the base stone, and the two anchor rods are stably fixed in the base stone, which can effectively resist the vertical pressure from above the slope protection, the water flow thrust parallel to the slope surface and the soil sliding force, form strong composite resistance, greatly improve the stability and safety of the slope protection structure under complex load, and effectively prevent the occurrence of instability phenomena such as sliding and overturning.

[0025] The drainage ditch arranged on both sides of the road in combination with the drainage pipeline arranged on the slope protection can actively and quickly collect the rainwater and runoff on the surface of the slope protection, and guide the rainwater and runoff into the drainage ditch for centralized discharge, so as to change the condition that the water flow of the traditional slope protection is directly washed and eroded on the slope surface. By effectively controlling and guiding the water flow, the direct washing and erosion of the soil of the slope protection are significantly reduced, the damage of the slope protection structure caused by internal hollowing is avoided, and the long-term integrity and ecological function of the slope protection are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a front view of the slope protection of the present application;

[0027] Figure 2 is a side sectional view of the present application;

[0028] Figure 3 is a schematic view of the drainage pipeline installed on the slope protection of the present application;

[0029] Figure 4 is a schematic view of the stone cage net retaining wall arranged on the step of the present application;

[0030] Figure 5 is a schematic view of the step partial area of the present application;

[0031] Figure 6 is a schematic view of the enlarged structure at a in the present application; Figure 2

[0032] Figure 7 is a schematic view of the base stone of the present application;​

[0033] Figure 8 Fig. 1 is a schematic diagram of the connection between the upper transverse pipe and the drainage ditch according to the present application;

[0034] Figure 9 Fig. 2 is a sectional view of the upper transverse pipe according to the present application;

[0035] Figure 10 Fig. 3 is a schematic diagram of the location of the steps according to the present application;

[0036] Figure 11 Fig. 4 is a schematic diagram of the gravel layer structure according to the present application.

[0037] Reference signs in the drawings:

[0038] 100, path, 1, path, 2, drainage ditch;

[0039] 200, slope protection, 3, step, 31, step surface one, 32, step surface two, 4, gabion wall, 5, ecological frame, 6, base stone, 7, drainage pipe, 71, upper transverse pipe, 72, lower transverse pipe, 73, vertical pipe, 74, enclosed area, 8, first anchor rod, 9, second anchor rod, 10, capstone, 11, protruding part, 12, drainage gap, 13, retaining stone net, 14, gap cavity, 15, gravel layer, 16, upper inclined surface, 17, lower inclined surface, 18, through hole, 19, through cavity, 20, strip-shaped slot, 21, retaining net, 22, opening, 23, net cylinder, 24, retaining ring, 25, buoyancy member, 26, soil protection barrier, 27, arc-shaped recess. DETAILED DESCRIPTION

[0040] In order to better explain the present application and facilitate understanding, the present application will be described in detail below by means of specific embodiments in combination with the accompanying drawings.

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. As long as the effects of the present application can be achieved, various changes can be made to the embodiments.

[0042] The components in the present application will be connected in sequence by those skilled in the art, and the specific connection and operation sequence should be referred to the working principle described below. The detailed connection means is a known technology in the art, and the working principle and process are mainly introduced below.

[0043] As Figures 1 to 11As shown, the embodiment of the present application proposes a water conservancy river engineering slope protection structure, the slope protection structure includes a plurality of sections of slope protection 200 formed on the slope surface of one side or both sides of the river channel and a walkway 100 located on one side of the slope protection 200 and between the adjacent two sections of slope protection 200, specifically, the slope surface is divided into a plurality of sections of slope protection 200 by the walkway 100. In the embodiment, the walkway 100 includes a walkway 1 for personnel to pass through, and a drainage ditch 2 is arranged on both sides of the walkway 1 along the inclined direction of the slope protection 200, which assists the slope protection 200 in drainage, so that part of the water on the slope protection 200 is collected and then discharged by the drainage ditch 2, reducing the erosion of the water flow to the slope protection 200, and further preventing the internal hollow collapse or downward sliding of the slope surface caused by soil erosion of the slope protection 200. In the embodiment, the slope protection 200 includes a plurality of steps 3 continuously formed on the slope body, and a gabion wall 4 is arranged on each step 3, which is used for slope protection and soil fixation to prevent soil erosion.

[0044] In the embodiment, one setting mode of the step 3 is to include continuously alternating step faces one 31 arranged in a first direction and step faces two 32 arranged in a second direction, wherein the step face one 31 is a horizontal plane, and the step face two 32 is an inclined plane, and each step face one 31 and step face two 32 are connected end to end. Wherein, the gabion wall 4 is arranged on the step face one 31 and adheres to the step face two 32 when arranged, so that the inner side of the gabion wall 4 is also arranged as an inclined plane like the step face two 32, enhancing the stability of the gabion wall 4 when placed.

[0045] Furthermore, the slope protection structure in the embodiment further comprises an anchoring member, which comprises a base stone 6 and first and second anchor rods 8 and 9 embedded in each step 3. The first anchor rod 8 is vertically inserted into the step 3 at the step surface one 31 and fixed on the base stone 6. The second anchor rod 9 is horizontally inserted into the step 3 at the step surface two 32 and fixed on the base stone 6. The vertically arranged first and second anchor rods 8 and 9 and the base stone 6 embedded in the step 3 are fixed as a whole. The horizontally arranged second anchor rod can not only tighten the step surface two 32 at the bottom of each step 3, but also provide an axial traction to the first anchor rod 8, forming a horizontal support for the first anchor rod 8 after being vertically inserted into the step 3. In the example of a conventional 6-meter long anchor rod for the first anchor rod 8, the base stone 6 is arranged at a position of 2 meters (i.e. 1 / 3 of the length of the anchor rod). The second anchor rod 9 is selected as a 3-meter short anchor rod, which is horizontally supported at 1 / 3 of the first anchor rod 8 from top to bottom by the second anchor rod 9, effectively preventing the first anchor rod 8 from being inclined due to the gravity of the slope protection 200, so that the first anchor rod 8 can be used for soil fixation in a vertical manner for a long time. In addition, the first anchor rod 8 also provides a traction to the second anchor rod 9 through the base stone 6, so that the second anchor rod 9 can tighten the soil at the step surface two 32 of the step 3, enhancing the stability of each step 3. The vertical and horizontal anchor rods work together to form a three-dimensional triangular support structure at each step 3, significantly improving the overall shear resistance and sliding resistance of the slope protection.

[0046] For example, the base stone 6 is a strip-shaped concrete base block, and through-holes 18 are formed on both sides of the base stone 6 for the first anchor rod 8 to pass through. A through cavity 19 is formed in the base stone 6 from the front surface to the back surface for the second anchor rod 9 to pass through. The through-holes 18 and the through cavity 19 are communicated.

[0047] During construction, a hole is dug downward at each step 3, and then a horizontal hole is dug horizontally along the step surface two 32, which is communicated with the hole. Then the base stone 6 is embedded in the hole. A first core rod is placed into the through-hole 18 in the hole, and a core rod is placed into the strip-shaped slot 20 in the horizontal hole. The hole is backfilled. All the core rods are pulled out, and cement mortar is poured above the hole until the cement mortar flows out of the horizontal hole, and the first and second anchor rods 8 and 9 are inserted into the predetermined position along the grouted hole and the horizontal hole. At this time, the part of the first and second anchor rods 8 and 9 located in the through cavity 19 is fixed and combined with the base stone 6 by the cement mortar, and after solidification, the first and second anchor rods 8 and 9 and the base stone 6 are fixed as a whole.

[0048] This construction method forms a reserved channel by embedding a core rod, ensuring the accuracy of the anchor rod installation position. Meanwhile, the cement mortar fills the gap between the hole and the anchor rod, realizing the gapless combination of the anchor rod, the base stone and the slope body, greatly improving the integrity and durability of the anchoring member.

[0049] In the embodiment, the rubble layer 15 is arranged on the step surface one 31, and the gabion retaining wall 4 is arranged on the rubble layer 15. The rubble layer 15 is used to form a shock-absorbing and buffering performance at the bottom of the gabion retaining wall 4 and to smooth the bottom surface of the gabion retaining wall 4, so that the gabion retaining wall 4 is placed in an overall flat manner. The surface of the step surface one 31 is inclined upward from outside to inside to form a lower inclined surface 17, which is used for water flow outward to avoid water accumulation at the step surface one 31 to cause settlement to the inside of the slope protection. The top surface of the rubble layer 15 is inclined downward from outside to inside to form an upper inclined surface 16, which is used for the gabion retaining wall 4 to be inclined inward to be attached to the step surface one 31, so that the gabion retaining wall 4 is attached to the back of the step surface one 31 and the bottom surface arranged on the rubble layer 15 to form a double-inclined surface structure. After the gabion retaining wall 4 is placed, the center of gravity is backward, which avoids the risk of large-area sliding of the traditional gabion retaining wall 4 caused by the center of gravity of the gabion retaining wall 4 being in the middle and the gabion retaining wall 4 being inclined forward after water and soil erosion. In addition, the double-inclined surface design not only optimizes the structural stability, but also forms a path for guiding water drainage, so that water can be quickly drained away from the main body of the slope protection, reducing seepage erosion.

[0050] In addition, the top of the first anchor rod 8 is provided with a capstone 10 in the embodiment. The capstone 10 is located on the front side of the gabion retaining wall 4, specifically, the front side of the rubble layer 15, and blocks the rubble in the rubble layer 15. The inner side of the capstone 10 is formed with a protruding part 11, which is triangular and abuts against the rubble layer 15. Specifically, the protruding part 11 is arranged to form two outwardly extending inclined sides on the inner side of the capstone 10. Water in the rubble layer 15 flows along the inclined surfaces of the protruding part 11 to both sides and is finally drained downward through the drainage gap 12. The inner edge of the step surface one 31 is provided with a soil retaining bar 26 to stabilize the bottom of the step surface two 32, and the second anchor rod 9 penetrates the soil retaining bar 26. The front surface of the soil retaining bar 26 is recessed inward to form an arc-shaped recessed part 27, and an arched clamping cavity is formed between the arc-shaped recessed part and the protruding part 11. The rubble layer 15 is arranged in the arched clamping cavity, so that the rubble layer 15 is in the shape of “⌒” in the top view projection. When the gabion retaining wall 4 is placed on the rubble layer 15, the gravity of the gabion retaining wall 4 applied to the rubble layer 15 is dispersed to both sides due to the influence of the arched clamping cavity, so as to avoid the gravity of the gabion retaining wall 4 being concentrated and applied to the middle of the capstone 10 through the rubble layer 15.

[0051] It should be further explained that the drainage gap 12 is formed between the adjacent two capstones 10, and the drainage gap 12 is provided with a retaining stone net 13. The water inside the step surface one 31 is drained downward through the drainage gap 12.

[0052] Furthermore, an ecological frame 5 is installed on the first step 31. When installing the ecological frame 5, one end is attached to the first step 31 and the other end is attached to the gabion wall 4. This allows the roots of the organisms planted in the ecological frame 5 to grow not only inside the gabion wall 4, but also inside the first step 31 and the second step 32 below, thus strengthening the connection and stability between the gabion wall 4 and each step 3.

[0053] Furthermore, a gap cavity 14 is formed between the ecological frame 5 and the cap stone 10. A drainage pipe 7 is installed in the gap cavity 14, with its end inserted into the drainage ditch 2. The drainage pipe 7 has multiple openings 22 for liquid inflow. The water discharged from the drainage gap 12 collects in the gap cavity 14 and enters the drainage pipe 7 through the openings 22, and is then introduced into the drainage ditches 2 on both sides for unified discharge. This achieves rapid and efficient removal of slope runoff and infiltration water, fundamentally reducing the risk of water erosion and minimizing the direct downward flow of water from the slope surface, which could cause soil erosion within the slope.

[0054] Specifically, the drainage pipe 7 includes an upper horizontal pipe 71 and a lower horizontal pipe 72 arranged parallel to each other, with openings 22 formed on the top surfaces of the upper horizontal pipe 71 and the lower horizontal pipe 72. The upper horizontal pipe 71 and the lower horizontal pipe 72 are respectively set on the step surface 31 of each step 3, and both ends of the upper horizontal pipe 71 and the lower horizontal pipe 72 are inserted into the drainage ditch 2; a vertical pipe 73 connects the upper horizontal pipe 71 and the lower horizontal pipe 72. Due to the design of the cap stone 10 at each step 3, the water accumulation above the step 3 is greater than the water accumulation below. The design of the vertical pipe 73 connects the upper horizontal pipe 71 located above and the lower horizontal pipe 72 located below, so that the water in the upper horizontal pipe 71 is introduced into the lower horizontal pipe 72 through the vertical pipe 73, reducing the drainage pressure of the upper horizontal pipe 71. Furthermore, each vertical pipe 73, together with the connected upper horizontal pipe 71 and lower horizontal pipe 72, forms an "I"-shaped structure, constituting a spatial truss-like support frame. This enhances the structural rigidity of the pipes themselves, providing stable support at each section of the upper horizontal pipe 71 and lower horizontal pipe 72. This prevents pipe deformation or rupture caused by uneven soil settlement or external loads, ensuring the long-term stable operation of the drainage system. Additionally, adjacent vertical pipes 73, together with the upper and lower horizontal pipes 71 and lower horizontal pipes 72, enclose an area 74 where a gabion retaining wall 4 can be placed, allowing for a rational arrangement of the drainage pipes 7 and the gabion retaining wall 4.

[0055] In order to prevent impurities from entering the drain pipe 7 through the opening 22, a mesh tube 23 is arranged through the opening 22 in the present embodiment. The mesh tube 23 is provided with a retaining ring 24 outside the part located in the opening 22, and a buoyant member 25 outside the part located outside the opening 22. The buoyant member 25 is a hollow plastic member. When a large amount of water flows downward and gathers in the gap cavity 14, the water drives the buoyant member 25 to float upward, and the mesh tube 23 is moved upward along with the buoyant member 25. The retaining ring 24 provides a limit for the upward movement of the mesh tube 23. When the mesh tube 23 is exposed to the outside, the water is filtered by the mesh tube 23 to prevent large impurities from entering.

[0056] In addition, it should be noted that the outer wall of the drain channel 2 is provided with a strip-shaped slot 20 along the length direction. The upper transverse pipe 71 and the lower transverse pipe 72 are inserted into the strip-shaped slot 20, and the strip-shaped slot 20 is covered by a retaining net 21 arranged outside the inserted end of the upper transverse pipe 71 and the lower transverse pipe 72.

[0057] In addition, the present embodiment also provides a construction method of the water conservancy river engineering slope protection structure, which comprises the following steps:

[0058] S1, planning the road 100 and the slope 200 area; building the road 1 and the drain channel 2 in the road 100; processing the steps 3 in the slope 200 to form the continuous step surfaces 31 and 32;

[0059] S2, digging holes and pre-burying the base stones 6 on each step 3, longitudinally inserting the first anchor rods 8 through the pre-buried base stones 6 at each step surface 31, and transversely inserting the second anchor rods 9 through the pre-buried base stones 6 at each step surface 32; fixing the capstones 10 at the end of the first anchor rods 8, and placing the retaining stone net 13; fixing the anchor rod caps at the end of the second anchor rods 9;

[0060] When digging the hole of the pre-buried base stone 6, the transverse hole of the second anchor rod 9 is dug along the step surface 32; when backfilling the hole of the pre-buried base stone 6, the first core rod is inserted into the through hole 18, and the core rod is inserted into the strip-shaped slot 20; after backfilling the hole and the transverse hole, all the core rods are pulled out, the cement mortar is poured above the hole until the cement mortar flows out of the transverse hole, and then the first anchor rod 8 and the second anchor rod 9 are inserted into the pre-determined position along the hole and the transverse hole after grouting, and the first anchor rod 8, the second anchor rod 9 and the base stone 6 are fixed into one body after 24 hours of solidification;

[0061] S3, processing the lower inclined surface 17 on the step surface 31 to pave the gravel layer 15, paving the upper inclined surface 16 on the surface of the gravel layer 15, and placing the gabion net retaining wall 4 on the gravel layer 15; it is necessary to ensure that the back of the gabion net retaining wall 4 is attached to the inclined step surface 31, and the bottom inclined surface is arranged on the gravel layer 15, so that the center of gravity of the gabion net retaining wall 4 is backward after being placed;

[0062] S4, fixing ecological frame 5 at the joint of step surface 1 and gabion wall 4, and planting ecological plants with long roots;

[0063] S5, laying drainage pipe 7 and connecting with drainage channel 2.

[0064] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A slope protection structure for a water conservancy river channel project, the slope protection structure comprising a slope protection and a walkway located on one side of the slope protection, the walkway comprising a road, the slope protection comprising a multi-level series of terraces formed continuously on the slope, each terrace being provided with a gabion mesh retaining wall, characterized in that: The platform includes a series of alternating step surfaces one along a first direction and step surfaces two along a second direction, with each step surface one and step surface two connected end to end. The gabion wall base is located on step surface one and its inner side is attached to step surface two. A layer of crushed stone is provided on the first step, and the gabion mesh retaining wall is provided on the crushed stone layer; the surface of the first step slopes upward from the outside to the inside to form a downward slope for water to flow outward; the top surface of the crushed stone layer slopes downward from the outside to the inside to form an upward slope for the gabion mesh retaining wall to adhere to the first step inward. The slope protection structure also includes anchors, which include a base stone pre-embedded in each step and a first anchor and a second anchor. The first anchor is vertically inserted into the step on step one and fixed through the base stone. The second anchor is horizontally inserted into the step on step two and fixed through the base stone. The second anchor not only tightens step two but also provides axial traction force to the first anchor. The first anchor bolt is topped with a cap stone, which is located on the front side of the gabion retaining wall; The inner side of the cap stone has a protrusion, which is triangular and abuts against the gravel layer; a soil retaining strip is provided at the inner edge of the first step, and the second anchor rod penetrates the soil retaining strip; The front of the retaining strip is recessed inward to form an arc-shaped recess, and an arched cavity is formed between the arc-shaped recess and the protrusion, with the crushed stone layer placed inside the arched cavity. Drainage channels are provided on both sides of the road along the slope direction; an ecological frame is provided on the first step, and a gap cavity is formed between the ecological frame and the cap stone. A drainage pipe is provided in the gap cavity, and the end of the drainage pipe is inserted into the drainage channel. The drainage pipe has multiple openings for liquid inlet. The drainage pipes include upper and lower horizontal pipes arranged parallel to each other. The upper and lower horizontal pipes are respectively set on the first step of each step of the platform, and both ends of the upper and lower horizontal pipes are inserted into the drainage ditch. The upper and lower horizontal pipes are connected by vertical pipes. Each vertical pipe and the connected upper and lower horizontal pipes form an "I" shape structure. The two adjacent vertical pipes and the upper and lower horizontal pipes at the top and bottom enclose an enclosed area where a gabion retaining wall can be placed.

2. The slope protection structure for a water conservancy river channel project according to claim 1, characterized in that: The foundation stone is a strip-shaped concrete block with through holes on both sides for the first anchor rod to pass through. The foundation stone also has a through cavity along the front to back direction for the second anchor rod to pass through. The through holes are connected to the through cavity.

3. The slope protection structure for a water conservancy river channel project according to claim 1, characterized in that: A drainage gap is formed between two adjacent cap stones, and a stone-blocking mesh is provided on the inner side of the drainage gap.

4. The slope protection structure for a water conservancy river channel project according to claim 1, characterized in that: The opening shown is formed on the top surface of the upper and lower transverse pipes. A mesh tube is installed through the opening. A retaining ring is installed on the outer side of the part of the mesh tube inside the opening, and a buoyancy element is installed on the part of the mesh tube outside the opening.

5. The slope protection structure for a water conservancy river channel project according to claim 1, characterized in that: The outer wall of the drainage ditch has a strip-shaped groove along its length. The upper and lower transverse pipes are inserted into the strip-shaped groove, and a baffle net is provided on the outside of the insertion end, which covers the strip-shaped groove.

6. A construction method for a slope protection structure in a water conservancy river channel project as described in claim 5, characterized in that, Includes the following steps: S1. Plan the road and slope protection area; build the road and drainage ditch in the road; process the steps in the slope protection to form a continuous step surface. S2. Excavate holes and pre-embed foundation stones on each step. Insert the first anchor rod longitudinally at one point on each step and penetrate the pre-embedded foundation stone. Insert the second anchor rod transversely at two points on each step and penetrate the pre-embedded foundation stone. Fix the cap stone at the end of the first anchor rod and place a stone retaining net. Fix the anchor rod cap at the end of the second anchor rod. S3. Lay a layer of crushed stone on the first step and place the gabion retaining wall on the crushed stone layer; S4. Fix the ecological frame at the junction of the step and the gabion retaining wall; S5. Lay drainage pipes and connect them to the drainage ditch.

7. The construction method according to claim 6, characterized in that: In step S2, when excavating the holes for the pre-embedded foundation stone, transverse holes for inserting the second anchor rod into the foundation stone are excavated along the second step surface; when backfilling the holes for the pre-embedded foundation stone, the first core rod inserted into the through hole is placed along the hole, and the core rod inserted into the strip slot is placed along the transverse hole; after backfilling the holes and transverse holes, all core rods are removed, and cement mortar is poured above the holes until the cement mortar flows out of the transverse hole, at which point the pouring stops, and the first anchor rod and the second anchor rod are inserted into the predetermined positions along the grouted holes and transverse holes, and after solidification, the first anchor rod, the second anchor rod, and the foundation stone are fixed together.

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