Protection structure and protection method for high and steep road slope gravel residue heap

Abstract

The invention relates to the technical field of geological disaster protection of high and steep road slopes containing gravel slag piles, in particular to a protection structure and a protection method for the gravel slag piles of the high and steep road slopes. The protective structure comprises an anti-rockfall assembly, a cementing and curing assembly and a stabilizing assembly. The anti-rockfall assembly comprises a steel strand net and short ground anchors. The cementation curing assembly comprises a concrete cementation body, and the concrete cementation body is formed by spraying concrete grout to the surface of the gravel residue pile; the stabilizing assembly comprises a plurality of cross-shaped concrete panels, an active protective net and long anchor rods, the cross-shaped concrete panels are arranged in the gravel area in an array mode, one ends of the long anchor rods are connected with the centers of the cross-shaped concrete panels, the other ends of the long anchor rods enter the bottom surface stratum, and the active protective net covers the gravel area and is fixed through the cross-shaped concrete panels. According to the protection structure for the high and steep road slope gravel slag heap, the continuous gravel slag heap on the high and steep slope surface can be effectively protected.

Description

Technical Field

[0001] The invention relates to the technical field of geological disaster protection for high and steep highway side slopes containing crushed stone slag piles, and in particular to a protective structure and a protective method for crushed stone slag piles on high and steep highway side slopes. Background Art

[0002] The construction of winding highways in mountainous areas often involves excavating the mountain to create the roadbed, which requires blasting and excavating the mountain's rock mass. However, various construction factors, such as blasting techniques, construction deadlines, and inadequate supervision, often lead to poor blasting results. This results in the formation of slag piles on the lower slopes, particularly in naturally concave areas, where they form continuous, unstable slag piles. These slag piles can extend from the slope's foot to the top or hang directly mid-slope, creating a temporary stability. Their height range far exceeds the maximum operating height of a long-reach excavator, posing a significant safety hazard to the road at the foot of the slope and requiring treatment.

[0003] If the gravel is cleared from the bottom up at the foot of the slope, the upper rock pile will roll again, inducing secondary disasters such as rockfall. Moreover, due to the interlocking effect between the gravel, it is easy to cause the coordinated instability of the surrounding gravel when clearing a certain stone block, and the risk of cleaning is extremely high. The efficiency of manual uphill cleaning is extremely low and the cost is high. There is also a risk that the gravel will roll down during construction or touch the local interlocking key blocks, causing a certain range of gravel rolling. This is very risky and makes it difficult to safely carry out the conventional construction of hanging active protection nets. Passive protection methods are used. The engineering community often uses a passive protection net protection system installed at the bottom of the gravel pile. However, due to the height limit of the passive protection net, it is difficult to effectively intercept the high-rise bouncing stones in the distance, and there is a risk of falling rocks during the construction of the passive net. Summary of the Invention

[0004] The purpose of the present invention is to provide a protective structure and a protective method for gravel slag piles on high and steep road slopes, so as to achieve effective protection of continuous gravel slag piles on high and steep slopes.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: In a first aspect, the present invention provides a protective structure for a rubble pile on a steep highway slope, comprising: a rockfall prevention assembly, a cementing and curing assembly, and a stabilization assembly. The rockfall prevention assembly includes a steel wire mesh and short anchors. The steel wire mesh is laid downward from the top of the rubble pile to cover the pile. The short anchors are arranged along the circumference of the steel wire mesh to secure the steel wire mesh to the surrounding stable stratum. The bonding and curing assembly includes a concrete bond, which is formed by spraying concrete slurry onto the surface of the crushed stone slag pile; The stabilization component includes a cross concrete panel, an active protective net and a long anchor rod. The cross concrete panel is provided in multiple forms and arranged in an array in the gravel area. One end of the long anchor rod is connected to the center of the cross concrete panel, and the other end enters the bottom stratum. The active protective net covers the gravel area and is fixed by the cross concrete panel.

[0006] Furthermore, the short anchors include anchors formed by driving steel bars vertically into the rock and soil.

[0007] Furthermore, an anchor plate is provided at the center of the cross concrete panel, and the active protection net is pressed under the anchor plate.

[0008] Furthermore, it also includes a top water cut-off component, which includes a water cut-off ditch arranged on the top slope of the crushed stone pile.

[0009] Furthermore, it also includes a water guide component, which includes an upward-slanted drainage hole, and the upward-slanted drainage hole includes a front pipe, a water-permeable pipe and a drilled hole that are interconnected.

[0010] Furthermore, it also includes a slope greening component, which includes a water storage and vegetation hole set on the slope, and a water-holding sponge is placed in the water storage and vegetation hole.

[0011] In a second aspect, the present invention provides a method for protecting a gravel slag pile on a steep highway slope, comprising the following steps: Install rockfall prevention components, using a steel wire mesh to spread from the top of the rubble pile to the bottom, covering the entire surface of the rubble pile, and use short anchors to anchor the perimeter of the steel wire mesh to the stable stratum around the rubble pile; To form a cemented and solidified assembly, the sprayed concrete slurry is pumped in batches and sprayed from top to bottom towards the crushed stone pile. The concrete slurry acts as a binder to bind the discrete stone blocks into a whole. The slope range of each batch of spraying is controlled within 6m. Set up long anchor rods and cross concrete panels. After the strength of the concrete slurry poured last time meets the requirements, the construction of long anchor rods and cross concrete panels can be carried out. The length of the long anchor rods should be more than 2m into the bottom layer of the crushed stone pile and into the weathered stable layer of the slope. Set up the active protection net. After the cross concrete panel is poured, the construction of the active protection net will start from top to bottom.

[0012] Furthermore, before the step of setting up the anti-rockfall component, it also includes building a ditch on the top of the crushed stone pile.

[0013] Furthermore, after the step of setting up the active protection net, it also includes setting up a slope greening component, drilling holes for water storage and vegetation, and placing water-retaining sponges in the water storage and vegetation holes.

[0014] Furthermore, after the step of setting up the slope greening components, it also includes spraying a thick layer of slope base material, and spraying the thick layer of slope base material mixed in a certain proportion onto the rock slope surface by mechanical or manual operation. The spraying should be done in blocks from top to bottom.

[0015] The present invention brings at least the following beneficial effects: A steel wire mesh is anchored to the slope surface with short anchors, temporarily shielding the rubble pile and preventing individual rocks from falling. It also prevents rocks from rolling, bouncing, and other uncontrolled behaviors, ensuring safety during the initial construction phase. Sprayed concrete slurry binds the individual rubble into a single, integrated concrete bond, preventing the risk of rockfall from the rubble pile. Long anchor rods and the cross-shaped concrete panel form a single unit, securing the rubble pile to the slope surface. The horizontal and vertical arms of the cross-shaped concrete panel expand the slope stabilization range and counteract the surface crushed rocks.

[0016] Compared to existing protective structures for gravel piles on steep slopes, this invention implements protective treatment for the gravel pile from the very beginning of construction, ensuring construction safety. By cementing the gravel pile into a single entity, it prevents the overall impact of deformation and sliding of individual rocks within the pile. Furthermore, it integrates an active protective net, a cross-shaped concrete panel, and long anchor rods. The cross-shaped concrete panel and active protective net provide slope counterpressure, while the long anchor rods provide reliable reaction force, firmly securing the cemented gravel to the slope and ensuring slope smoothness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of the protective structure for gravel slag piles on steep highway slopes provided by the present invention; Figure 2 A schematic cross-sectional view of a protective structure for a gravel pile on a steep highway slope provided by the present invention; Figure 3 A schematic diagram of a long anchor rod and a cross concrete panel provided in an embodiment of the present invention; Figure 4 A top view of a cross concrete panel provided by an embodiment of the present invention; Figure 5 Layout diagram of the cross concrete panel, long anchor rods and active protection net provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of an upward-slanted drainage hole provided in an embodiment of the present invention; Figure 7 A schematic diagram of a water storage and vegetation hole provided in an embodiment of the present invention.

[0019] icon: 1-slope surface; 2-slope depression valley; 3-gravel in the rubble pile at the highway slope depression; 4-steel wire mesh; 5-active protection net; 6-concrete binder; 7-cross concrete panel; 8-lower highway subgrade; 9-subgrade ditch; 10-concrete retaining wall; 11-long anchor rod; 12-short anchor nail; 13-intercepting ditch; 14-upper highway subgrade; 15-upper subgrade slope; 16-slope thick layer foundation Material; 17-upward inclined drainage hole; 18-water storage and vegetation hole; 19-anchor rod and anchor support; 20-anchor pad; 21-anchor head; 22-hexagonal nut; 23-anchor rod and reinforcement centering bracket; 24-anchor rod and reinforcement; 25-anchor rod hole grouting body; 26-anchor rod drilling hole; 27-anchor rod and reinforcement hole; 34-front pipe; 35-permeable pipe; 36-drilling hole; 37-drilling hole for upward inclined drainage hole; 38-water-retaining sponge. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0023] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0024] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0026] Example 1 An embodiment of the present invention provides a protective structure for a gravel pile on a steep highway slope. The structure is targeted at gravel 3 in a gravel pile in a depression on a highway slope and includes: an anti-falling rock component, a bonding and curing component, and a stabilizing component. The anti-falling rock component includes a steel wire mesh 4 and short anchor nails 12. The steel wire mesh 4 is laid downward from the upper part of the gravel pile to cover the gravel pile. The short anchor nails 12 are arranged along the circumference of the steel wire mesh 4 to fix the steel wire mesh 4 to the surrounding stable stratum; the bonding and curing component includes a concrete binder 6, which is formed by spraying concrete slurry onto the surface of the gravel pile; the stabilizing component includes a cross concrete panel 7, an active protective net 5, and a long anchor rod 11. A plurality of cross concrete panels 7 are provided and arranged in an array in the gravel area. One end of the long anchor rod 11 is connected to the center of the cross concrete panel 7, and the other end enters the bottom stratum. The active protective net 5 covers the gravel area and is fixed by the cross concrete panel 7.

[0027] See Figure 1 The steel wire mesh 4 is fixed to the slope surface by short anchor nails 12, which temporarily covers the rubble pile and prevents individual rocks from falling. At the same time, it can prevent the rocks from rolling, bouncing, and other uncontrollable behaviors, thereby ensuring safety in the early stages of construction. The sprayed concrete slurry binds the discrete gravels into a whole to form a concrete cement body 6, which can prevent the risk of rolling stones from the rubble pile. The long anchor rod 11 and the cross concrete panel 7 form a whole to fix the rubble pile on the slope surface. The horizontal and vertical panel arms of the cross concrete panel 7 can expand the range of slope consolidation and achieve the purpose of counter-pressure on the surface gravel.

[0028] Compared with existing protective structures for gravel piles on steep slopes, this invention implements protective treatment of the gravel pile from the very beginning of construction, ensuring construction safety. The gravel pile is cemented into a whole, avoiding the overall impact caused by the deformation and sliding of individual stones within the gravel pile. Figure 5 At the same time, the active protection net 5, the cross concrete panel 7 and the long anchor rod 11 are combined into one. The cross concrete panel 7 and the active protection net 5 provide slope counterpressure, and the long anchor rod 11 provides reliable reaction force, which firmly fixes the gravel bonded as a whole on the slope surface, while also ensuring the smoothness of the slope surface.

[0029] When concrete slurry is sprayed onto the surface of the crushed stone pile, it flows, influenced by its own gravity, into the gaps between the stones below, cementing the stones together and forming a single, integrated layer. Once the concrete slurry has solidified, it not only effectively prevents loose stones smaller than 10 cm from rolling away, but also reduces the risk of individual stones rolling or the pile becoming unstable.

[0030] In an optional manner of this embodiment, the short anchors 12 include anchors formed by driving steel bars vertically into the rock and soil on the slope.

[0031] See Figure 1 and Figure 2 The rockfall prevention assembly consists of a flexible, high-strength steel wire mesh 4 with mesh dimensions of 10cm x 10cm and a 5mm diameter steel wire. This mesh is laid down the slope from the top of the rubble pile, completely covering and firmly covering the pile. The mesh is laid slightly wider than the rubble pile. Short anchors 12 are used to secure the mesh 4 to the surrounding stable ground, above and to the left and right sides. The length of these anchors depends on the nature of the ground surrounding the rubble pile, typically ranging from 3 to 6 meters, though shorter anchors may be used in ground with better anchoring strength. These anchors are formed by 22mm diameter steel bars driven vertically into the rock and soil.

[0032] In an optional manner of this embodiment, an anchor plate 20 is provided at the center of the cross concrete panel 7 , and the active protection net 5 is pressed under the anchor plate 20 .

[0033] See Figure 3 and Figure 4, combine the long anchor rod 11, the cross concrete panel 7 and the active protection net 5, and fix the concrete binder 6 bonded by the concrete slurry on the slope. The horizontal and vertical lengths of the cross concrete panel 7 are both 2m, the panel width is 0.4m, and the thickness is 0.2m. The four cantilevers of the cross concrete panel 7 can effectively restrain the sliding of gravel on the slope. At the same time, the center of the cross concrete panel 7 is connected to the long anchor rod 11, which can effectively transfer the sliding force of the gravel on the open slope to the stable stratum inside the slope through the long anchor rod 11. The long anchor rod 11 adopts a 32mm diameter fine-rolled threaded steel bar. By using the long anchor rod 11 instead of the original steel rope anchor rod during the construction of the active protection net 5, the anchoring protection capability of the active protection net 5 can be improved.

[0034] The structure of anchor rod anchor support 19, anchor plate 20, anchor head 21, hexagonal nut 22, anchor rod reinforcement centering bracket 23, anchor rod reinforcement 24, anchor rod hole grouting body 25, anchor rod drilling hole 26 and anchor rod reinforcement hole 27 is as shown in FIG. Figure 3 and Figure 4 As shown, no further details are given here.

[0035] In an optional manner of this embodiment, the protective structure further includes a top water cutoff assembly, and the top water cutoff assembly includes a water cutoff ditch 13 provided on the top slope of the crushed stone pile.

[0036] See Figure 1 The intercepting ditch 13 can intercept the water flowing from the trailing edge slope to the gravel slope, thereby reducing the degree of erosion of the gravel pile by the flowing water.

[0037] In an optional manner of this embodiment, the protective structure further includes a water guide component, which includes an upward-slanting drainage hole 17 , and the upward-slanting drainage hole 17 includes a front pipe 34 , a water-permeable pipe 35 and a drilled hole 36 that are interconnected.

[0038] See Figure 6 The inclined drainage hole 17 is composed of a front pipe 34, a plastic permeable pipe 35 with a diameter of 80mm and a drilled hole 36 with a diameter of 110mm, and a drilled hole 37 of an inclined drainage hole is also provided at the end. By conducting water from the bottom of the slope rubble pile, the bottom of the rubble pile is prevented from being eroded by water.

[0039] In an optional manner of this embodiment, the protective structure further includes a slope greening component, which includes a water storage and vegetation hole 18 arranged on the slope, and a water-holding sponge 38 is placed in the water storage and vegetation hole 18.

[0040] See Figure 3 and Figure 7The slope greening assembly consists of a thick layer of sprayed substrate 16 containing drought-tolerant plantings and water-retaining vegetation holes 18. The water-retaining vegetation holes 18 have a diameter of 50 mm, a depth of 30 cm, and are spaced 30 cm apart. Holes are drilled between the gravel, avoiding the gravel. Water-retaining sponges 38 are placed in the holes to restore the slope's ecology and reduce the intensity of water erosion. The slope vegetation effectively improves the concrete slurry used to solidify the gravel against surface water erosion. The water-retaining sponges 38 provide long-term moisture to the thick substrate, ensuring the survival rate of the slope vegetation.

[0041] The steel wire mesh 4, active protection net 5 and water storage and vegetation holes 18 can evenly distribute the thick layer of base material 16 on the slope surface 1, so that the nutrient matrix is ​​tightly combined and not easy to fall off, providing a favorable platform for the neat growth of vegetation in the later stage.

[0042] In an optional embodiment of the present invention, the protective structure further includes a concrete retaining wall 10 at the foot of the slope, which serves to shield and protect the lower highway embankment 8 and the embankment ditch 9. The top of the slope surface 1 is the upper highway embankment 14 and the upper embankment side slope 15.

[0043] Example 2 This embodiment provides a method for protecting a gravel slag pile on a steep highway slope, comprising the following steps: A ditches 13 are built on the top of the rubble pile to prevent the slope water from flowing into the rubble pile and reducing the stability of the rubble pile; Set up the rockfall prevention assembly, use the steel wire mesh 4 to spread from the top of the rubble pile to the bottom, covering the entire surface of the rubble pile, and use short anchors 12 to anchor the periphery of the steel wire mesh 4 in the stable stratum around the rubble pile; To form a cemented and solidified assembly, pump the shotcrete slurry in batches and spray it from top to bottom towards the crushed stone pile. During spraying, ensure that the concrete slurry can flow into the gaps between the crushed stones by its own gravity and until it overflows the surface. The concrete slurry acts as a binder to cement the discrete stone blocks into a whole. The slope range of each batch of spraying is controlled within 6m. Set up long anchor rods 11 and cross concrete panels 7. After the strength of the concrete slurry poured in the last shotcrete pouring meets the requirements, the long anchor rods 11 and cross concrete panels 7 are constructed. The slope spacing of the long anchor rods 11 is 4.5m×4.5m. The length of the long anchor rods 11 should penetrate into the bottom layer of the rubble pile and the weathered stable layer of the slope by more than 2m. The arm length of the cross concrete panel 7 in the horizontal and vertical directions is 1m, and the total length is 2m×2m. After the active protection net 5 is set up and the cross concrete panel 7 is poured, the construction of the active protection net 5 is started from top to bottom, and the active protection net 5 is pressed under the anchor pad 20, and then the anchor head of the long anchor rod 11 is locked and the anchor head 21 is made; Make up the spraying of the areas where the shotcrete slurry is insufficient or leaking on the entire slope surface; Set up slope greening components, drill and construct water storage and vegetation holes 18, and place water-holding sponges 38 in the water storage and vegetation holes 18 to maintain the moisture of the greening; Spraying the thick layer of base material 16 on the slope surface, using a machine or manual operation to spray the thick layer of base material 16 mixed in a certain proportion onto the rock slope surface, and the spraying should be done in blocks from top to bottom; Watering, pest and disease control and maintenance management.

[0044] This method for protecting rubble piles on steep highway slopes permanently protects them while balancing both construction and post-construction safety. This avoids the high cost of loose rock removal and the risk of rockfall, while also ensuring ecological restoration of the slope, in line with the principles of natural disaster prevention and ecological restoration. This method provides safe, long-term, rapid, and economical protection during both construction and operation for the rubble piles left behind in the steep slope depressions and gullies (2) during the blasting and excavation of the winding mountain highway subgrade, ensuring the safety of winding mountain roads while also achieving ecological restoration.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective structure for gravel piles on steep highway slopes, characterized in that: include: An anti-rockfall assembly, a cementing and curing assembly, and a stabilizing assembly. The anti-rockfall assembly includes a steel wire mesh and short anchors. The steel wire mesh is laid from the top of the rubble pile downward to cover the rubble pile. The short anchors are arranged along the circumference of the steel wire mesh to fix the steel wire mesh to the surrounding stable stratum. The bonding and curing assembly includes a concrete bond, which is formed by spraying concrete slurry onto the surface of the crushed stone slag pile; The stabilization component includes a cross concrete panel, an active protective net and a long anchor rod. The cross concrete panel is provided in multiple forms and arranged in an array in the gravel area. One end of the long anchor rod is connected to the center of the cross concrete panel, and the other end enters the bottom stratum. The active protective net covers the gravel area and is fixed by the cross concrete panel.

2. The protective structure for gravel slag piles on steep highway slopes according to claim 1, characterized in that: The short anchors include anchors formed by driving steel bars vertically into the rock and soil.

3. The protective structure for gravel slag piles on steep highway slopes according to claim 2, characterized in that: An anchor plate is provided at the center of the cross concrete panel, and the active protection net is pressed under the anchor plate.

4. The protective structure for gravel slag piles on steep highway slopes according to claim 1, characterized in that: It also includes a top water cut-off component, which includes a water cut-off ditch arranged on the top slope of the crushed stone slag pile.

5. The protective structure for gravel slag piles on steep highway slopes according to claim 1, characterized in that: It also includes a water guide component, which includes an upward-sloping drainage hole. The upward-sloping drainage hole includes a front pipe, a water-permeable pipe and a drilled hole that are interconnected.

6. The protective structure for gravel slag piles on steep highway slopes according to claim 1, characterized in that: It also includes a slope greening component, which includes a water storage and vegetation hole arranged on the slope, and a water-holding sponge is placed in the water storage and vegetation hole.

7. A method for protecting a gravel pile on a steep highway side slope according to the protective structure for a gravel pile on a steep highway side slope according to any one of claims 1 to 6, characterized in that: The following steps are involved: Install rockfall prevention components, using a steel wire mesh to spread from the top of the rubble pile to the bottom, covering the entire surface of the rubble pile, and use short anchors to anchor the perimeter of the steel wire mesh to the stable stratum around the rubble pile; To form a cemented and solidified assembly, the sprayed concrete slurry is pumped in batches and sprayed from top to bottom towards the crushed stone pile. The concrete slurry acts as a binder to bind the discrete stone blocks into a whole. The slope range of each batch of spraying is controlled within 6m. Set up long anchor rods and cross concrete panels. After the strength of the concrete slurry poured last time meets the requirements, the construction of long anchor rods and cross concrete panels can be carried out. The length of the long anchor rods should be more than 2m into the bottom layer of the crushed stone pile and into the weathered stable layer of the slope. Set up the active protection net. After the cross concrete panel is poured, the construction of the active protection net will start from top to bottom.

8. The method for protecting a gravel slag pile on a high and steep highway slope according to claim 7, characterized in that: Before the step of setting the anti-rockfall component, the method also includes building a ditch on the top of the crushed stone pile.

9. The method for protecting a gravel slag pile on a high and steep highway slope according to claim 8, characterized in that: After the step of setting up the active protection net, the method also includes setting up a slope greening component, drilling holes for water storage and vegetation, and placing water-holding sponges in the holes.

10. The method for protecting a gravel slag pile on a high and steep highway slope according to claim 9, characterized in that: After the step of setting up the slope greening components, the process also includes spraying a thick layer of slope base material, spraying the thick layer of slope base material mixed in a certain proportion onto the rock slope surface by mechanical or manual operation, and the spraying should be done in blocks from top to bottom.

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