A slope reinforcement method

Abstract

The present invention discloses a slope reinforcement method, comprising the following steps: 1. first, drilling a vertical hole vertically downward from the top of the slope at a position far away from the slope surface; 2. placing a reinforcement steel cage into the vertical hole; 3. driving a row of anchor rods from the slope surface inward corresponding to the vertical hole, during which special tools and measurement technology are used to ensure that the row of anchor rods and the vertical hole are located on the same plane, so that all the anchor rods in the row are inserted from the side or pass through the vertical hole and the steel cage; 4. sealing the opening of the anchor rod at the slope surface; 5. injecting concrete inward under pressure from above the vertical hole, the concrete extending and flowing along the path of the anchor rod while filling the vertical hole, thereby wrapping the anchor rod and partially squeezing it outward into the soil layer under the action of pressure; the slope reinforcement method can form a reinforced concrete network that can be firmly supported in the soil layer far away from the slope surface, and the anchor rods can be simply and conveniently and completely integrated with the network, and has extremely strong slope reinforcement ability and reinforcement stability.

Description

Technical Field

[0001] The present invention relates to the field of geotechnical engineering, in particular to a slope reinforcement method. Background Art

[0002] Slope collapse can cause great harm to people's lives and property, especially in water conservancy and hydropower, mining, highway, railway and military projects, which will encounter high and steep slopes formed by man-made excavations and nature. When the geological conditions are poor, rainwater is concentrated and improperly handled, landslides may occur, and even serious landslide disasters may occur.

[0003] Slope stability refers to the stability of soil in various engineering structures under certain conditions of slope height and angle. Based on their stability, slopes can be categorized as stable, unstable, and in a limit equilibrium state. An unstable slope occurs when the soil's surface tilt causes the entire structure to slide downward under the combined effects of its own weight and other external forces. If the sliding force on a surface within the soil structure exceeds the structure's ability to resist sliding, a landslide will occur. Summary of the Invention

[0004] The present invention provides a slope reinforcement method, which can form a firmly supported reinforced concrete network in a soil layer far away from the slope surface, and enables anchor rods to be simply and conveniently fully integrated with the network, thereby having extremely strong slope reinforcement capability and reinforcement stability.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Option 1:

[0007] A slope reinforcement method includes the following steps:

[0008] ①First, drill a vertical hole from the top of the slope downwards at a position far away from the slope;

[0009] ② Place the reinforcement steel cage into the vertical hole;

[0010] ③ In correspondence with the vertical holes, a row of anchor rods is driven inward from the slope surface. During this process, special tools and measurement techniques are used to ensure that the row of anchor rods and the vertical holes are located on the same plane, and that all anchor rods in the row are inserted from the side or pass through the vertical holes and the steel cage;

[0011] ④Seal the opening of the anchor rod on the slope;

[0012] ⑤ Concrete is injected into the vertical hole from above under pressure. The concrete flows along the path of the anchor rod while filling the vertical hole, thus wrapping the anchor rod and partially squeezing into the soil layer under pressure.

[0013] ⑥ Arrange multiple rows of anchor rods and multiple corresponding vertical holes along the slope according to design requirements.

[0014] Furthermore, step ⑦ is included. After step ⑥, a groove is dug at the top of the slope, steel bars are buried, and concrete is poured to connect two adjacent vertical concrete piles formed by vertical holes to each other, so that all vertical concrete piles are connected into an integral network, and all anchor rods are also connected into an integral network through the vertical concrete piles.

[0015] Furthermore, step ⑧ is included. After step ⑦, the part of the anchor rod exposed on the slope surface is used as the support point or locking point, and long concrete blocks are cast on the slope surface or prefabricated long concrete blocks are assembled to form a strip-frame-shaped concrete slope protection net.

[0016] Furthermore, the anchor rod head is provided with a conical shell; cracks that do not penetrate the conical shell are opened along multiple busbars on the conical shell; a groove is opened in the anchor rod head; an internal thread is opened in the groove; the area enclosed by the groove and the conical shell forms a liquid cavity; a relative electrode is provided in the liquid cavity and filled with water; the wire of the relative electrode extends backward to the outside, and an external circuit applies a strong electric field to the water in the liquid cavity through the relative electrode, forming a liquid-electric effect, and the generated explosion impact causes the conical shell to crack along the cracks and open outward into a claw shape.

[0017] Option 2:

[0018] A slope reinforcement method includes the following steps:

[0019] ①First, drill a vertical hole from the top of the slope downwards at a position far away from the slope;

[0020] ②Insert a bracket with an L-shaped elbow into the vertical hole;

[0021] ③ A bendable rod with a detachable electric screw-in head is guided by an L-shaped turning head and screwed out toward the slope;

[0022] ④ After unscrewing, remove the electric rotating head. At this time, one end of the bendable rod is exposed from the slope, and the other end is just in the vertical hole;

[0023] ⑤Take out the bracket and adjust the height of the L-shaped elbow, then repeat steps ② to ④;

[0024] ⑥ Place the reinforcement cage into the vertical hole;

[0025] ⑦ Concrete is injected into the vertical hole from the top and into the inside of the vertical hole from the outer end of the bendable rod at the same time under pressure. The concrete fills the vertical hole and the inside of the bendable rod to form a tree-like distribution;

[0026] ⑧ Dig a groove under the top of the slope, bury the steel bars, and pour concrete to connect two adjacent vertical concrete piles formed by vertical holes, so that all the vertical concrete piles are connected into an integral network;

[0027] ⑨Use the part of the bendable rod exposed on the slope surface as the support point or locking point, cast long concrete blocks on the slope surface or assemble prefabricated long concrete blocks to form a strip-frame-shaped concrete slope protection net.

[0028] Furthermore, the bendable rod comprises a plurality of single components with a lying "fly" shape in axial cross section, which are sequentially sleeved; one end of the single component is provided with a fitting portion concave inward toward the axis, and the other end is provided with an embedded portion that can be gap-fitted with the fitting portion of the adjacent single component; a plurality of single components are sequentially sleeved to form a bendable rod that can be bent to a certain degree.

[0029] Furthermore, the electric drilling head includes a drilling bit, a fixing sleeve and a motor; the motor is fixed in the fixing sleeve, and the fixing sleeve is detachably connected to the flexible rod head joint; the motor drives the drilling bit to rotate and drill, and an external circuit powers the motor.

[0030] Compared with the prior art, the present invention has the following beneficial effects: the structure of the present invention is scientific and reasonable, and the use is safe and convenient;

[0031] 1. This new slope reinforcement method forms a robust reinforced concrete network in the soil away from the slope surface, allowing anchor rods to be easily and conveniently integrated into this network. This provides exceptional slope reinforcement capacity and stability. In contrast, existing slope reinforcement methods use independent anchor rods or soil nails in the soil, without connecting them to form a reinforcement network, resulting in a low upper limit on pullout resistance.

[0032] 2. This method not only reinforces the slope surface, but also provides strong reinforcement for the entire slope. The reinforced slope is strong enough to cope with various adverse conditions.

[0033] 3. This method is simple to operate and has low construction cost. It can greatly reduce the use of anchor rods under the same reinforcement strength, thereby saving material cost and construction cost; under the same material cost and construction cost, it can improve the reinforcement strength and stability by several levels.

[0034] 4. The anchor rod of this method forms a liquid cavity by forming a conical shell with a crack and a sink, and utilizes the liquid-electric effect to pass a high-voltage strong electric field through the liquid. Due to the huge energy released instantly in the discharge channel, the liquid in the channel quickly vaporizes, expands and causes an explosion, thereby utilizing the weak points of strength caused by the cracks to explode the conical shell into a claw shape from the inside out. This method has many advantages. First, it has a simple structure, simple and safe operation, low manufacturing cost, and only needs to apply a strong electric field through an electric wire after the anchor rod is in place; second, the shape of the conical shell is conducive to drilling the anchor rod into the formation, and the claw-like structure after the explosion can achieve the effect of undercutting, preventing the anchor rod from falling out, and also increasing the subsequent contact area and bonding force with the concrete; third, the anchor rod after the explosion connects the sink with the outside world, and the concrete will flow into the sink, and then the internal thread in the sink can be used to tightly connect the concrete and the anchor rod, thereby increasing the overall integrity.

[0035] 5. The bendable rod of the present method can be rotated from the vertical hole to the outside of the slope surface and exposed by utilizing an L-shaped turning head and an electric screwing head. In this way, although the position distribution of the rotated-out bendable rod on the slope surface may have a certain error, it is possible to ensure that one end of the bendable rod is located in the vertical hole without the need for measuring tools and measuring operations, thereby ensuring the integrity of the bendable rod and the overall concrete; the special structure of the bendable rod not only makes it compressive rigidity, but also has certain bending characteristics, so it can utilize the L-shaped turning head and the electric screwing head to achieve ninety-degree bending feeding, and after the bendable rod is exposed on the slope surface, the electric screwing head is removed, and concrete is poured inward from the vertical hole and the outer end of the bendable rod at the same time. The solidified concrete not only makes the bendable rod no longer bendable, turning it into a high-strength anchor rod, but also can utilize the concrete to connect the bendable rod and the concrete in the vertical hole into one, forming a tree-like concrete skeleton in the slope, greatly improving the strength of the slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] In the attached figure:

[0038] Figure 1 1 is a side view schematic diagram of the slope reinforcement according to the first embodiment of the present invention;

[0039] Figure 2 1 is a schematic top view of the slope reinforcement according to the first embodiment of the present invention;

[0040] Figure 3 1 is a cross-sectional schematic diagram of the anchor rod of the present invention under normal conditions;

[0041] Figure 4 This is a schematic diagram of the front end of the anchor rod of the present invention after being exploded;

[0042] Figure 5 This is a schematic diagram of an embodiment of the present invention, wherein the anchor rod and the reinforcement cage are poured with concrete in a vertical hole;

[0043] Figure 6 is a side view schematic diagram of the slope reinforcement according to the second embodiment of the present invention;

[0044] Figure 7 Schematic diagram of a second embodiment of the present invention showing a bendable rod being introduced into a vertical hole for drilling;

[0045] Figure 8 This is a schematic diagram of a second embodiment of the present invention, wherein the bendable rod and the steel cage are poured with concrete in a vertical hole;

[0046] Figure 9 It is a structural schematic diagram of the bendable rod of the present invention.

[0047] Numbers in the figure:

[0048] 1. Slope surface; 2. Slope top; 3. Vertical hole; 4. Anchor rod; 41. Conical shell; 42. Fracture; 43. Groove; 44. Internal thread; 45. Liquid chamber; 46. Electrode; 47. Conductor; 5. Rebar cage; 6. Groove; 7. Concrete slope protection net; 8. L-shaped bend; 9. Bracket; 10. Electric screw-in head; 101. Screw-in drill bit; 102. Fixing sleeve; 103. Motor; 11. Bendable rod; 111. Single component; 112. Fitting part; 113. Embedded part. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] Example 1:

[0051] See also Figures 1 to 5 , a slope reinforcement method, comprising the following steps:

[0052] ① First, drill a vertical hole 3 vertically downward from the top of the slope 2 at a position far away from the slope 1;

[0053] ② Place the reinforcement cage 5 into the vertical hole 3;

[0054] ③ Corresponding to the vertical holes 3, a row of anchor rods 4 is driven inward from the slope surface 1. During this process, special tools and measurement techniques are used to ensure that the row of anchor rods 4 and the vertical holes 3 are located on the same plane, so that all anchor rods 4 in the row are inserted from the side or pass through the vertical holes 3 and the steel cage 5;

[0055] ④ Seal the opening of anchor rod 4 at slope surface 1;

[0056] ⑤ Pressurized concrete is injected inward from the top of the vertical hole 3. The concrete flows along the path of the anchor rod 4 while filling the vertical hole 3, thereby wrapping the anchor rod 4 and partially squeezing into the soil layer under the action of pressure;

[0057] ⑥ Arrange multiple rows of anchor rods 4 and multiple corresponding vertical holes 3 along the slope according to design requirements.

[0058] Furthermore, step ⑦ is included. After step ⑥, a groove 6 is dug at the top of the slope 2, steel bars are buried, and concrete is poured so that two adjacent vertical concrete piles formed by the vertical holes 3 are connected to each other, so that all the vertical concrete piles are connected into an integral network, and all the anchor rods 4 are also connected into an integral network through the vertical concrete piles.

[0059] Furthermore, step ⑧ is included. After step ⑦, the portion of the anchor rod 4 exposed on the slope surface 1 is used as a support point or locking point, and long concrete blocks are cast on the slope surface or prefabricated long concrete blocks are assembled to form a strip-frame-shaped concrete slope protection net 7.

[0060] Furthermore, the head of the anchor rod 4 is provided with a conical shell 41; the conical shell 41 is provided with broken cracks 42 along multiple busbars that do not penetrate the conical shell 41; the head of the anchor rod 4 is provided with a sinking groove 43; the sinking groove 43 is provided with an internal thread 44; the area enclosed by the sinking groove 43 and the conical shell 41 forms a liquid cavity 45; the liquid cavity 45 is provided with a relative electrode 46 and filled with water; the wire 47 of the relative electrode 46 extends backward to the outside, and an external circuit applies a strong electric field to the water in the liquid cavity 45 through the relative electrode 46, forming a liquid-electric effect, and the generated explosion shock causes the conical shell 41 to crack along the broken crack 42 and open outward into a claw shape.

[0061] Example 2:

[0062] See also Figures 6 to 9 , a slope reinforcement method, comprising the following steps:

[0063] ① First, drill a vertical hole 3 vertically downward from the top of the slope 2 at a position far away from the slope 1;

[0064] ② Insert a bracket 9 with an L-shaped bend 8 into the vertical hole 3;

[0065] ③ A bendable rod 11 with a detachable electric screw-in head 10 is guided by the L-shaped turning head 8 to be screwed out toward the slope;

[0066] ④ After unscrewing, remove the electric rotating head 10. At this time, one end of the bendable rod 11 is exposed from the slope 1, and the other end is just located in the vertical hole 3;

[0067] ⑤ Take out the bracket 9 and adjust the height of the L-shaped bend 8, then repeat steps ② to ④;

[0068] ⑥ Place the reinforcement cage 5 into the vertical hole 3;

[0069] ⑦ Concrete is injected into the vertical hole 3 from above and into the vertical hole 3 from the outer end of the bendable rod 11 at the same time under pressure. The concrete fills the vertical hole 3 and the bendable rod 11 to form a tree-like distribution.

[0070] ⑧ Dig a groove 6 at the top of the slope 2, bury the steel bars, and pour concrete to connect two adjacent vertical concrete piles formed by the vertical holes 3, so that all the vertical concrete piles are connected into an integral network;

[0071] ⑨ Using the portion of the bendable rod 11 exposed from the slope surface 1 as a support point or locking point, cast long strip concrete blocks on the slope surface or assemble prefabricated long strip concrete blocks to form a strip-frame-shaped concrete slope protection net 7.

[0072] Furthermore, the bendable rod 11 includes a plurality of single components 111 with an axial cross-section in the shape of a lying "fly" character, which are sequentially sleeved; one end of the single component 111 is provided with a fitting portion 112 concave inward toward the axis, and the other end is provided with an embedded portion 113 that can be gap-fitted with the fitting portion 112 of the adjacent single component 111; a plurality of single components 111 are sequentially sleeved to form a bendable rod 11 that can be bent to a certain extent.

[0073] Furthermore, the electric screw-in head 10 includes a screw-in drill bit 101, a fixed sleeve 102 and a motor 103; the motor 103 is fixed in the fixed sleeve 102, and the fixed sleeve 102 is detachably connected to the head joint of the flexible rod 11; the motor 103 drives the screw-in drill bit 101 to rotate and drill, and an external circuit powers the motor 103.

[0074] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A slope reinforcement method, characterized by: The process includes the following steps: ① First, drill a vertical hole (3) vertically downward from the top of the slope (2) at a position far away from the slope surface (1); ② Insert a bracket (9) with an L-shaped bend (8) into the vertical hole (3); ③ A bendable rod (11) with a detachable electric screw-in head (10) is guided by an L-shaped turning head (8) and screwed out toward the slope; ④ After unscrewing, remove the electric rotating head (10). At this time, one end of the bendable rod (11) is exposed from the slope (1), and the other end is just located in the vertical hole (3); ⑤ Take out the bracket (9) and adjust the height of the L-shaped bend (8), then repeat steps ② to ④; ⑥ Place a reinforcement steel cage (5) into the vertical hole (3); 7. Concrete is injected into the vertical hole (3) from above and into the vertical hole (3) and from the outer end of the bendable rod (11) inwards under pressure at the same time, so that the concrete fills the vertical hole (3) and the inside of the bendable rod (11) to form a tree-like distribution; ⑧ Dig a groove (6) at the top of the slope (2), bury the steel bars, and pour concrete to connect two adjacent vertical concrete piles formed by the vertical holes (3) to each other, so that all the vertical concrete piles are connected into an integral network; ⑨ Using the portion of the bendable rod (11) exposed from the slope surface (1) as a support point or locking point, cast long strip concrete blocks on the slope surface or assemble prefabricated long strip concrete blocks to form a strip-frame-shaped concrete slope protection net (7); The bendable rod (11) comprises a plurality of single components (111) with axial cross sections in the shape of a lying "fly" character, which are sequentially sleeved together; one end of the single component (111) is provided with an engaging portion (112) concave inwardly toward the axis, and the other end is provided with an embedded portion (113) that can be interspacedly engaged with the engaging portion (112) of an adjacent single component (111); the plurality of single components (111) are sequentially sleeved together to form a bendable rod (11) that can be bent to a certain extent.

2. A slope reinforcement method according to claim 1, characterized in that: The electric screw-in head (10) comprises a screw-in drill bit (101), a fixing sleeve (102) and a motor (103); the motor (103) is fixed in the fixing sleeve (102), and the fixing sleeve (102) is detachably connected to the head joint of the bendable rod (11); the motor (103) drives the screw-in drill bit (101) to rotate and drill, and an external circuit supplies power to the motor (103).

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