Slope anti-sliding supporting device

Abstract

The utility model discloses a slope anti-slip support device, which relates to the technical field of slope support and comprises a retaining wall tightly attached to a slope and a base layer filled into a soil layer, a plurality of inclined holes are formed in the retaining wall, and a support component is arranged between the retaining wall and the slope. The supporting assembly is arranged, a drilling machine is used for drilling the pouring deep groove in the side slope, the anchor rods with the supports penetrate through the inclined hole of the retaining wall to be inserted into the deep groove, the anchor rods are ensured to be in a centering state in the pouring deep groove through the multiple annularly-arrayed supports, the anchor rods can be completely wrapped by cement paste, the cement paste is poured into the inclined hole through the grouting opening, and the inclined hole is formed. In the process, the positioning rod sinks into the inclined hole under the action of force applied by the cement paste, the grouting cover connected with the positioning sleeve is firmly limited in the counterbore, it is guaranteed that after grouting is completed and the outer surface of the opening end of the inclined hole is smooth, after the cement paste is solidified, the anchor rod, the cement paste and a rock-soil body are combined into a whole, and the sliding force of the slope is transmitted to a deep stable rock stratum; and deep anti-sliding force is provided.

Description

Technical Field

[0001] This utility model relates to the field of slope protection technology, and in particular to a slope anti-sliding support device. Background Technology

[0002] In the field of slope engineering, various support structures are often used to enhance slope stability in order to prevent soil or rock mass from becoming unstable and sliding. Traditional support methods have been widely used in practice. However, with the increasing complexity of engineering environments and the continuous improvement of construction requirements, existing technologies have gradually shown certain limitations in practical applications. In particular, when dealing with different geological conditions and complex load conditions, there is still room for further optimization in terms of the adaptability, construction efficiency and long-term stability of existing support structures.

[0003] A search revealed a utility model patent with authorization announcement number CN220927870U, entitled "Slope Support Device for Geotechnical Foundation Pit Construction," which relates to the field of geotechnical foundation pit construction technology. The device includes a support plate and a bottom plate. This utility model uses anchoring cylinders and anchoring rods, which work together to anchor the support plate and bottom plate to the geotechnical foundation pit, making the connection between the support plate and the foundation pit slope, and between the bottom plate and the foundation pit bottom surface, more secure. The anchoring structure extends into the soil, improving the overall safety and stability of the slope and ensuring the overall stability of the slope toe. The above solution also uses a protective structure to block soil and rock blocks rolling down the slope from the support plate (mainly blocking large blocks), preventing them from rolling down the support device into the foundation pit and injuring construction workers.

[0004] However, the anchoring rods of this device are inserted into the soil layer one by one by hammering, which is only suitable for extremely soft soil or fill. For soil layers that are slightly denser, especially those containing gravel, it is impossible to hammer them in. Secondly, the anchoring force generated by hammering is very limited, mainly relying on surface friction, which cannot provide deep and high-strength anchoring. Furthermore, the hammering process is very likely to cause the anchoring rods to deviate, making it impossible to guarantee the design angle and affecting the support effect. In view of this, this application proposes a slope anti-sliding support device based on the above technical problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a slope anti-sliding support device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A slope anti-sliding support device includes a retaining wall closely attached to the slope and a base layer filled into the soil layer. The retaining wall has several inclined holes, and a support assembly is installed between the retaining wall and the slope. The support assembly includes anchor rods matching the number of inclined holes. A deep casting groove with the same inclination angle as the inclined holes is provided on the inner side of the slope. The anchor rods are inserted into the deep casting groove. A grouting cap is provided at the end of the anchor rod outside the inclined hole, and the grouting cap is used to seal the inclined hole in conjunction with the anchor rod. Several sets of supports are provided outside the anchor rod. The grouting cap has a grouting port. The deep casting groove is connected to the slope. Cement grout is poured into the grouting port; several positioning rods are arranged in a circle on the support, and the positioning rods are welded to the outside of the anchor rod. The positioning rods are used to center the anchor rod in the deep grouting trench. The positioning rods are all located on the side of the grouting cover near the inclined hole; the retaining wall has a countersunk hole adapted to the grouting cover on the side near the grouting cover, and a positioning sleeve is connected to the side of the grouting cover near the inclined hole and fitted onto the anchor rod. The positioning sleeve has grooves in a circle corresponding to the number and position of the positioning rods, and an inlet / outlet groove is also provided on the positioning sleeve. The positioning rods enter and exit the grooves through the inlet / outlet grooves.

[0008] Furthermore, the base layer includes a wall toe and a wall heel, the wall toe extending below the soil layer, the wall heel extending below the slope, and the wall heel being longer than the wall toe.

[0009] Furthermore, a supporting wall is formed by pouring concrete between the retaining wall and the base layer.

[0010] Furthermore, a drainage component is provided above the retaining wall, and a protective component is provided on one side of the drainage component. The drainage component includes a drainage ditch, the side of the drainage ditch near the slope is set as an inclined surface, the side of the drainage ditch near the retaining wall is set as a straight surface, and a connecting layer is provided between the drainage ditch and the retaining wall.

[0011] Furthermore, the protective assembly includes several fixed rods fixedly installed on the slope, a protective net is fixedly installed between the fixed rods, and a steel wire rope is fixedly installed between the fixed rods and the slope.

[0012] Furthermore, a V-shaped plate with an opening facing outwards from the inclined hole is installed on the side of the positioning rod near the grouting cover. The distance between the V-shaped plate and the anchor rod is greater than the thickness of the positioning sleeve, and the side of the V-shaped plate away from the anchor rod is lower than the top of the positioning rod.

[0013] Furthermore, the grouting port is inclined towards the inside of the inclined hole, and the bottom of the end of the grouting port located outside the inclined hole is higher than the top of the inclined hole.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model involves setting up support components and using a drilling rig to drill a deep trench at a designed angle within the slope's rock and soil mass. Then, anchor rods with pre-welded supports are passed through inclined holes in the retaining wall and inserted into the deep trench. A series of ring-shaped supports ensure the anchor rods are centered within the trench, guaranteeing that the subsequent cement grout completely covers the anchor rods, forming a uniform and dense protective layer. Cement grout is injected into the inclined holes through the grouting port. During this process, the positioning rod sinks into the inclined hole under the force of the cement grout. The positioning rod, in conjunction with the groove, firmly positions the grouting cap connected to the positioning sleeve within the countersunk hole, ensuring the smoothness of the outer surface of the inclined hole opening after grouting. After the cement grout solidifies, the anchor rod, cement grout, and surrounding rock and soil mass are firmly bonded together, transferring the potential sliding force of the slope to the anchor rod through the cement grout, and then to a deeper, more stable rock and soil layer, thus providing stable and deep anti-sliding force.

[0016] 2. This utility model, by setting a wall toe, a wall heel, and a supporting wall, deeply embeds the base layer through the wall toe at the front end and the wall heel at the rear end. The set length of the wall heel is greater than the set length of the wall toe, which shifts the center of gravity of the entire structure backward and makes full use of the self-weight of the slope soil above the wall heel to form a gravity structure that resists sliding, providing a fundamental stable foundation for the entire support system. The supporting wall poured between the retaining wall and the slope further enhances the overall rigidity and stability of the structure.

[0017] 3. This utility model, by setting up drainage components, specifically designs the drainage ditch with a sloping side close to the slope to address the harm of water to slope stability, so as to facilitate the collection of water flow and its drainage through the drainage ditch, thereby preventing soil erosion.

[0018] 4. This utility model provides an active safety barrier by setting up protective components, tensioning steel wire ropes by driving fixed rods into the slope, and then fixing protective nets on the fixed rods to prevent weathering and erosion and the rolling of gravel from affecting the road below. At the same time, it can prevent large pieces of gravel from falling into the drainage ditch and affecting its normal drainage function. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a slope anti-slip support device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the casting trench for a slope anti-slip support device proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the base layer of a slope anti-slip support device proposed in this utility model;

[0022] Figure 4This is a schematic diagram of the assembly of anchor rods, brackets and grouting caps for a slope anti-slip support device proposed in this utility model.

[0023] In the diagram: 1. Retaining wall; 2. Base layer; 3. Inclined hole; 4. Anchor bolt; 5. Pouring trench; 6. Grouting cover; 7. Support; 8. Positioning rod; 9. Wall toe; 10. Wall heel; 11. Access trench; 12. Support wall; 13. Drainage ditch; 14. Connecting layer; 15. Fixing rod; 16. Protective net; 17. Wire rope; 18. V-shaped plate; 19. Positioning sleeve; 20. Grouting port; 21. Grooving trench. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-4 A slope anti-sliding support device includes a retaining wall 1 closely attached to the slope and a base layer 2 filled into the soil layer. The retaining wall 1 has a plurality of inclined holes 3, and a support component is provided between the retaining wall 1 and the slope.

[0026] The support assembly includes anchor bolts 4 in the same number as the inclined holes 3. The inner side of the slope is provided with a casting groove 5 with the same inclination angle as the inclined holes 3. The anchor bolts 4 are inserted into the casting groove 5. A grouting cover 6 is provided at one end of the anchor bolt 4 outside the inclined holes 3. The grouting cover 6 is used to cooperate with the anchor bolt 4 to seal the inclined holes 3. Several sets of brackets 7 are provided outside the anchor bolt 4. A grouting port 20 is opened on the grouting cover 6. Cement slurry is poured into the casting groove 5 through the grouting port 20.

[0027] The bracket 7 has several positioning rods 8 arranged in a circle. The positioning rods 8 are welded to the outside of the anchor rod 4. The positioning rods 8 are used to center the anchor rod 4 in the deep grouting groove 5. The positioning rods 8 are all located on the side of the grouting cover 6 near the inclined hole 3.

[0028] The retaining wall 1 has a countersunk hole on the side near the grouting cover 6 that is compatible with the grouting cover 6. The grouting cover 6 has a positioning sleeve 19 connected to the side near the inclined hole 3 and sleeved on the outside of the anchor rod 4. The positioning sleeve 19 has grooves 21 around its circumference that correspond to the number and position of the positioning rods 8. The positioning sleeve 19 also has an inlet / outlet groove 11, through which the positioning rods 8 enter and exit the grooves 21.

[0029] First, the slope and soil layers are excavated, and retaining wall 1 and base layer 2 are constructed. After the construction of retaining wall 1 and base layer 2, a drilling rig is used to drill a deep pouring trench 5 at the designed angle within the slope soil and rock mass. Subsequently, anchor rods 4, pre-welded with supports 7, are passed through inclined holes 3 on retaining wall 1 and inserted into the deep pouring trench 5. The supports 7, composed of several ring-shaped array positioning rods 8, ensure that the anchor rods 4 are centered in the deep pouring trench 5, thereby ensuring that the subsequently poured cement grout can completely cover the anchor rods 4, forming a uniform and dense protective layer. Grout is then injected into the inclined holes 3 through the grouting port 20. During the cement grouting process, the positioning rod 8 is slid into the inclined hole 3 under the force of the cement grout. Then, through the cooperation of the positioning rod 8 and the hook groove 21, the grouting cover 6 connected to the positioning sleeve 19 is firmly limited in the countersunk hole, ensuring the flatness of the outer surface of the opening end of the inclined hole 3 after the grouting is completed. After the cement grout solidifies, the anchor rod 4, the cement grout and the surrounding soil and rock are firmly combined into a whole, and the potential sliding force of the slope is transmitted to the anchor rod 4 through the cement grout, and then transmitted to the deeper and more stable soil and rock layer through the anchor rod 4, thereby providing stable and deep anti-sliding force.

[0030] After the cement grout has solidified, the operator can use the cross-section of the grouting cover 6 as a reference to cut off the part of the anchor rod 4 that is longer than the grouting cover 6 using a cutting machine. The operation is simple and convenient, ensuring the flatness and aesthetics of the exterior of the retaining wall 1 after construction.

[0031] By setting up the interconnected groove 21 and inlet / outlet groove 11, the anchor rod 4 and grouting cover 6 can be quickly disassembled and assembled. During installation, simply align the inlet / outlet groove 11 with the positioning rod 8, slide the positioning sleeve 19 along the anchor rod 4 until the groove 21 exceeds the position of the positioning rod 8, then rotate the positioning sleeve 19 towards the side closer to the positioning rod 8, and pull the anchor rod 4 out of the inclined hole 3 until the anchor rod 4 can be engaged with the groove 21 under the action of thrust or gravity. At this time, the grouting cover 6 is pulled down by the anchor rod 4 and locked in the countersunk hole. It should be noted that when the grouting cover 6 is locked in the countersunk hole, the grouting port 20 should be located directly above the anchor rod 4 to avoid the grouting port 20 being too low, which would cause the cement grout to overflow from the grouting port 20 when the cement grout in the inclined hole 3 is almost full due to the grout height being higher than the grouting port 20.

[0032] Reference Figure 1 , Figure 3 Specifically: the base layer 2 includes a wall toe 9 and a wall heel 10, the wall toe 9 extends below the soil layer, the wall heel 10 extends below the slope, and the length of the wall heel 10 is greater than that of the wall toe 9;

[0033] The base layer 2 is deeply buried through the wall toe 9 at its front end and the wall heel 10 at its rear end. The set length of the wall heel 10 is greater than the set length of the wall toe 9, which makes the center of gravity of the entire structure shift backward and makes full use of the self-weight of the slope soil above the wall heel 10 to form a gravity structure that resists sliding, providing a fundamental stable foundation for the entire support system.

[0034] Reference Figure 3 Specifically, a supporting wall 12 is cast between the retaining wall 1 and the base layer 2 to further enhance the overall rigidity and stability of the structure.

[0035] Reference Figure 2 Specifically: A drainage component is provided above the retaining wall 1, and a protective component is provided on one side of the drainage component. The drainage component includes a drainage ditch 13. The side of the drainage ditch 13 near the slope is set as an inclined surface, and the side of the drainage ditch 13 near the retaining wall 1 is set as a straight surface. A connecting layer 14 is provided between the drainage ditch 13 and the retaining wall 1. In order to deal with the harm of water to the stability of the slope, the side of the drainage ditch 13 near the slope is specially designed as an inclined surface to facilitate the collection of water flow and its drainage through the drainage ditch 13, thereby preventing soil erosion.

[0036] Reference Figure 1-2 Specifically, the protective component includes several fixed rods 15 fixedly installed on the slope, a protective net 16 fixedly installed between the fixed rods 15, and a steel wire rope 17 fixedly installed between the fixed rods 15 and the slope. The steel wire rope 17 is tensioned by driving the fixed rods 15 into the slope, and the protective net 16 is then fixed on the fixed rods 15 to prevent weathering and erosion and the rolling of gravel from affecting the road below, providing an active safety barrier. At the same time, it can prevent large pieces of gravel from falling into the drainage ditch 13 and affecting its normal drainage function.

[0037] Reference Figure 4 Specifically: A V-shaped plate 18 with an opening facing outwards from the inclined hole 3 is installed on the side of the positioning rod 8 near the grouting cover 6. The V-shaped plate 18 has elastic deformation capability. The distance between the V-shaped plate 18 and the anchor rod 4 is greater than the thickness of the positioning sleeve 19. The side of the V-shaped plate 18 away from the anchor rod 4 is lower than the top of the positioning rod 8. The advantage of this arrangement is that when grout is injected into the inclined hole 3, the grout will squeeze the V-shaped plate 18, causing elastic deformation on both sides, thus widening the angle between the two side walls of the V-shaped plate 18. This, in turn, increases the projected area of ​​the V-shaped plate 18 parallel to the axis of the anchor rod 4, making the grouting... During the grouting process, a larger volume of grout squeezes the outer side walls of the V-shaped plate 18, and the squeezing direction is parallel to the axis of the anchor rod 4, increasing the stress effect of the V-shaped plate 18. When the grout is full, the grout in the inclined hole 3 limits the anchor rod 4 and the grouting cover 6 through its own viscosity and its pressure on the V-shaped plate 18. This limiting effect is continuous. This limiting effect increases the resistance to the grouting cover 6 moving outward from the inclined hole 3 during the grouting process, reduces the probability of the grouting cover 6 moving, ensures that the grouting cover 6 fits the countersunk hole, thereby ensuring the opening and sealing effect of the inclined hole 3, and thus reducing grout overflow.

[0038] It should be noted that the V-shaped plate 18 has a set elastic deformation capacity to prevent the V-shaped plate 18 from bending excessively after being subjected to force, and to ensure its limiting effect on the grouting cover 6 after being subjected to force.

[0039] Reference Figure 4 Specifically: the grouting port 20 is inclined towards the inclined hole 3, and the bottom of the end of the grouting port 20 located outside the inclined hole 3 is higher than the top of the inclined hole 3. The advantage of this setting is that the grouting port 20 will overflow when the inclined hole 3 is filled with cement grout, thus avoiding the waste of cement grout and reducing the pollution of the outer facade of the retaining wall 1 caused by the grouting work.

[0040] Working principle: First, the slope and soil layers are excavated and the retaining wall 1 and base layer 2 are constructed. After the construction of the retaining wall 1 and base layer 2, a drilling rig is used to drill a deep pouring trench 5 at the designed angle within the slope soil and rock. Then, the anchor rod 4, pre-welded with a bracket 7, is passed through the inclined hole 3 on the retaining wall 1 and inserted into the deep pouring trench 5. The bracket 7, composed of several ring-shaped array positioning rods 8, ensures that the anchor rod 4 is centered in the deep pouring trench 5, thereby ensuring that the subsequently poured cement grout can completely cover the anchor rod 4, forming a uniform and dense protective layer. The grout is then injected through the grouting port 20 into the inclined hole. 3. Cement grout is injected into the inclined hole 3. During this process, the positioning rod 8 sinks into the inclined hole 3 under the force of the cement grout. Then, through the cooperation of the positioning rod 8 and the hook groove 21, the grouting cover 6 connected to the positioning sleeve 19 is firmly limited in the countersunk hole, ensuring the flatness of the outer surface of the opening end of the inclined hole 3 after the grouting is completed. After the cement grout solidifies, the anchor rod 4, the cement grout and the surrounding rock and soil are firmly combined into a whole. The potential sliding force of the slope is transmitted to the anchor rod 4 through the cement grout, and then transmitted to the deeper and more stable rock and soil layer through the anchor rod 4, thereby providing stable and deep anti-sliding force.

[0041] The base layer 2 is deeply buried through the wall toe 9 at its front end and the wall heel 10 at its rear end. The set length of the wall heel 10 is greater than the set length of the wall toe 9, which shifts the center of gravity of the entire structure backward and makes full use of the self-weight of the slope soil above the wall heel 10 to form a gravity structure that resists sliding, providing a fundamental stable foundation for the entire support system. The support wall 12 poured between the retaining wall 1 and the slope further enhances the overall rigidity and stability of the structure.

[0042] To address the threat of water to slope stability, the side of the drainage ditch 13 closest to the slope is designed as a slope to facilitate the collection of water flow and its drainage through the drainage ditch 13, thereby preventing soil erosion.

[0043] By driving the fixing rods 15 into the slope and tensioning the steel wire ropes 17, and then fixing the protective netting 16 on the fixing rods 15, the weathering and erosion and the rolling of gravel can be prevented from affecting the road below, providing an active safety barrier. At the same time, it can prevent large pieces of gravel from falling into the drainage ditch 13 and affecting its normal drainage function.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0045] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

Claims

1. A slope anti-slide support device, characterized in that, It includes a retaining wall (1) that is close to the slope and a base layer (2) that is filled into the soil layer. The retaining wall (1) has several inclined holes (3). A support component is provided between the retaining wall (1) and the slope. The support assembly includes anchor rods (4) in the same number as the inclined holes (3). The inner side of the slope is provided with a casting groove (5) with the same inclination angle as the inclined holes (3). The anchor rods (4) are inserted into the casting groove (5). A grouting cover (6) is provided at one end of the anchor rod (4) outside the inclined holes (3). The grouting cover (6) is used to cooperate with the anchor rods (4) to close the inclined holes (3). Several sets of brackets (7) are provided outside the anchor rods (4). A grouting port (20) is opened on the grouting cover (6). Cement slurry is poured into the casting groove (5) through the grouting port (20). The bracket (7) has several positioning rods (8) arranged in a circle. The positioning rods (8) are welded to the outside of the anchor rod (4). The positioning rods (8) are used to center the anchor rod (4) in the deep grouting groove (5). The positioning rods (8) are all located on the side of the grouting cover (6) near the inclined hole (3). The retaining wall (1) has a countersunk hole that matches the grouting cover (6) on the side near the grouting cover (6). The grouting cover (6) has a positioning sleeve (19) that is sleeved on the side near the inclined hole (3). The positioning sleeve (19) has a groove (21) that corresponds to the number and position of the positioning rods (8) in a circumferential manner. The positioning sleeve (19) also has an inlet / outlet groove (11). The positioning rods (8) enter and exit the groove (21) through the inlet / outlet groove (11).

2. The slope anti-slip support device according to claim 1, characterized in that, The base layer (2) includes a wall toe (9) and a wall heel (10), the wall toe (9) extending below the soil layer, the wall heel (10) extending below the slope, and the wall heel (10) being longer than the wall toe (9).

3. The slope anti-slip support device according to claim 1, characterized in that, A supporting wall (12) is poured between the retaining wall (1) and the base layer (2).

4. The slope anti-slip support device according to claim 1, characterized in that, A drainage assembly is provided above the retaining wall (1), and a protective assembly is provided on one side of the drainage assembly; The drainage component includes a drainage ditch (13), the drainage ditch (13) is set as a slope on the side near the slope, the drainage ditch (13) is set as a straight surface on the side near the retaining wall (1), and a connecting layer (14) is provided between the drainage ditch (13) and the retaining wall (1).

5. The slope anti-slip support device according to claim 4, characterized in that, The protective assembly includes several fixed rods (15) fixedly installed on the slope, a protective net (16) fixedly installed between the fixed rods (15), and a steel wire rope (17) fixedly installed between the fixed rods (15) and the slope.

6. The slope anti-slip support device according to claim 1, characterized in that, The positioning rod (8) is equipped with a V-shaped plate (18) with its opening facing outward from the inclined hole (3) on the side near the grouting cover (6). The distance between the V-shaped plate (18) and the anchor rod (4) is greater than the thickness of the positioning sleeve (19). The side of the V-shaped plate (18) away from the anchor rod (4) is lower than the top of the positioning rod (8).

7. The slope anti-slip support device according to claim 1, characterized in that, The grouting port (20) is inclined toward the inside of the inclined hole (3), and the bottom of the end of the grouting port (20) located outside the inclined hole (3) is higher than the top of the inclined hole (3).

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