Unfavorable geology high slope anchor cable lattice beam slope protection construction method

Abstract

The invention relates to an unfavorable geology high slope anchor cable lattice beam slope protection construction method, and relates to the technical field of slope protection construction.The unfavorable geology high slope anchor cable lattice beam slope protection construction method comprises the following steps that S1, protection units are divided, and anchor cables are driven into the connecting positions of the protection units; s2, a groove is excavated along the boundary of the protection unit; s3, first anchor rods and second anchor rods are driven into the grooves, the top ends of the first anchor rods are exposed out of the grooves, and the second anchor rods are located in the grooves and connected with the two adjacent protection units through connecting pieces; s4, frame steel bars are built in the grooves, and the frame steel bars are connected with the first anchor rods and the second anchor rods in the grooves where the frame steel bars are located; s5, a pouring formwork is built on the groove, and each frame steel bar is located in a pouring cavity of the pouring formwork; s6, concrete is poured into the pouring formwork; s7, after the concrete is coagulated and formed, the pouring formwork is dismantled; and S8, sealing the anchor. Through cooperation of all the components, the overall stability of the high-slope anchor cable lattice beam slope protection formed through construction can be improved.

Description

Technical Field

[0001] The present application relates to the field of slope protection construction technology, and in particular to a slope protection construction method for high slopes with poor geological conditions and anchor cable lattice beams. Background Art

[0002] With the continuous advancement of infrastructure construction, the construction technology of high-slope anchor cable lattice beam slope protection is becoming more and more widespread. High-slope anchor cable lattice beam slope protection mostly uses anchor cables and concrete lattice beams to protect the slope. During construction, it is necessary to first locate and stake out, and then drive multiple anchor cables into the positioning points one by one. The top of the anchor cable is exposed, and multiple anchor cables form blocks to divide the surface area of ​​the slope into individual protection units; after that, it is necessary to dig trenches along the boundaries of the protection units, and then build exposed casting templates in the trenches. After the concrete in the casting template solidifies and forms, the template is removed. The concrete lattice beam is closely combined with the anchor cable. Because the anchor cable forms a strong concentrated force on the ground beam, these forces form a certain counter-pressure on the lattice beam, which increases the anti-slip force of the potential slip surface of the slope and plays a role in increasing the overall stability of the rock and soil.

[0003] Although the high slope anchor cable lattice beam slope protection formed by the above construction method can effectively protect the slope, its combination with the slope is mainly achieved through anchor cables. When construction is carried out on poor geology, the difference in geological conditions caused by uneven geology, or the difference between geological conditions and original design conditions caused by changes in the natural environment and the use environment during the use stage, will have a certain impact on the tensile strength of the anchor cable, which may affect the reliability and stability of the entire support system. Summary of the invention

[0004] In order to improve the problems existing in the above-mentioned technology, the present application provides a slope protection construction method of anchor cable lattice beams on high slopes with poor geological conditions.

[0005] The present application provides a method for constructing a slope protection system with anchor cable lattice beams on a high slope with poor geological conditions, which adopts the following technical solutions: A method for constructing a slope protection system for high slopes with bad geology with anchor cable lattice beams, comprising the following steps: S1: Divide the protection units and drive anchor cables into the connection points of each protection unit; S2: excavating a trench along the boundary of the protection unit; S3: driving a first anchor rod and a second anchor rod into the groove, wherein the top end of the first anchor rod is exposed from the groove, and the second anchor rod is located in the groove and connects two adjacent protection units through a connecting piece; S4: constructing a frame steel bar in the groove, and connecting the frame steel bar with a first anchor rod and a second anchor rod in the groove; S5: constructing a casting template on the groove, wherein each frame steel bar is located in a casting cavity of the casting template, and a plurality of casting cavities are interconnected; S6: pouring concrete into the casting formwork; S7: After the concrete solidifies and takes shape, the pouring formwork is removed; S8: Anchor.

[0006] By adopting the above technical solution, when carrying out slope protection construction, first divide the entire slope protection, confirm the position of each protection unit, and then drive each anchor cable into the connection position of each protection unit one by one. After digging a groove along the boundary of the protection unit, the first anchor rod and the second anchor rod are driven into each groove, the top of the first anchor rod is exposed in the corresponding groove, and the second anchor rod is buried in the corresponding groove and connects the two adjacent protection units through the connecting piece, so that each protection unit can be connected through the connecting piece and the second anchor rod. After that, build the corresponding frame steel bar in each groove, and connect the frame steel bar with the first anchor rod and the second anchor rod in the corresponding groove. After the frame steel bar is built, build a casting template at the position of the frame steel bar, and the frame frame is located in the corresponding casting template as a whole. The casting template is built to form a casting cavity, and then concrete can be poured in the casting cavity. After the concrete is cast, the casting template is removed and the subsequent finishing work is completed.

[0007] The coordination of the various components in the present application can improve the overall stability of the high-slope anchor lattice beam slope protection formed during construction. The overall slope protection is connected to the slope through anchor cables, first anchor rods and second anchor rods. With the coordination of anchor cables, second anchor rods and connecting parts, multiple protection units are connected to each other, thereby making the overall slope protection have higher stability and reliability, and can cope with poor geological construction.

[0008] The connecting member includes a sleeve rotatably connected to the second anchor rod, and an insertion rod is threadedly connected to each other at both ends of the sleeve, and the ends of the two insertion rods that are away from each other are in a pointed cone shape; in step S3, after the second anchor rod is driven into the groove, the sleeve is rotated, and the two insertion rods are rotated out in a direction away from each other and are respectively inserted into the two protection units.

[0009] By adopting the above technical solution, a section of the two plug rods close to each other is located in the sleeve and is threadedly connected to the sleeve. After the second anchor rod is installed, the sleeve is rotated to move the two plug rods in a direction away from each other. The sections of the two plug rods away from each other are in a pointed cone shape, so that the plug rods can be inserted into the corresponding protection units respectively after being rotated out. The second anchor rod is thus connected to the two adjacent protection units through the plug rod. The connection method is simple and easy to operate.

[0010] The sleeve is provided with a plurality of slurry leakage holes.

[0011] By adopting the above technical solution, in step S6, when pouring concrete into the casting template, the concrete will enter the inner cavity of the sleeve through the leakage hole. After the concrete is solidified and formed, the position of the insertion rod is fixed, and the stability of the insertion rod in the sleeve is improved.

[0012] A limiting block is fixed on the second anchor rod, a limiting ring groove is provided in the sleeve, and the limiting block is located in the limiting ring groove and is slidably connected with the limiting ring groove.

[0013] By adopting the above technical solution, when the second anchor rod is installed in the corresponding groove, the sleeve is rotated to rotate the two insertion rods out and inserted into the corresponding protective unit. During this process, the limit block is always located in the limit ring groove and slides in the limit ring groove, thereby preventing the sleeve from detaching from the second anchor rod and ensuring that the second anchor rod can establish a connection with the protective unit through the sleeve and the insertion rod.

[0014] A first limiting ring plate is arranged at one end of the two insertion rods close to each other, and two second limiting ring plates are arranged in the sleeve. The first limiting ring plate is used to abut against the corresponding second limiting ring plate to limit the insertion rods from continuing to move in the same direction.

[0015] By adopting the above technical solution, during the rotation of the sleeve, the two insertion rods move in directions away from each other, and the first limiting ring plate moves along with the corresponding insertion rod. When the first limiting ring plate moves to abut against the corresponding second limiting ring plate, it is blocked by the second limiting ring plate, and the continued movement of the first limiting ring plate in the same direction is restricted, and the continued movement of the insertion rod in the same direction is also restricted, thereby preventing the insertion rod from detaching from the sleeve, and further ensuring that the second anchor rod can establish a connection with the protective unit through the sleeve and the insertion rod.

[0016] Each of the casting templates includes two side templates and a top template that are arranged opposite to each other; in step S5, when building the casting template on the groove, the side templates are placed above the groove, and the opposite sides of the two side templates are flush with the corresponding inner sides of the groove.

[0017] By adopting the above technical solution, the casting formwork as a whole is formed by the side formwork and the top formwork. The side formwork is located above the groove and the inner side is flush with the inner side of the groove, thereby making the slope protection have a higher flatness after casting. Since the bottom end of the side formwork does not need to be placed in the groove, the difficulty of removing the side formwork can be reduced after the concrete is solidified and formed.

[0018] A leak-proof plate is provided on the inner side of the side mold; in step S5, the side mold is placed on the groove, and the leak-proof plate is located at the joint between the groove and the side mold.

[0019] By adopting the above technical solution, after the casting formwork is built, the leak-proof plate is located at the joint between the groove and the side formwork to play a blocking role. When pouring concrete into the casting formwork, the presence of the leak-proof plate can prevent concrete from seeping out from the joint between the groove and the side formwork.

[0020] The anti-leakage plate is detachably connected to the side form; in step S7, when the casting formwork is removed, the side formwork is separated from the anti-leakage plate.

[0021] By adopting the above technical solution, after the concrete in the casting formwork is solidified and formed, the casting formwork is removed. At this time, the side formwork can be separated from the leak-proof plate, and there is no need to separate the leak-proof plate from the cast concrete, thereby reducing the difficulty of removing the casting formwork.

[0022] An extension plate is arranged on the leakage prevention plate, and a slot for inserting the extension plate is opened on the side mold; in step S7, when separating the side mold from the leakage prevention plate, the side mold is moved out along the insertion direction away from the extension plate.

[0023] By adopting the above technical solution, when the extension plate is plugged into the slot, the leak-proof plate is installed on the side plate. Under the cooperation of the extension plate and the slot, when the leak-proof plate is separated from the side form, it is only necessary to move the side form in the insertion direction away from the extension plate, thereby moving the side form out. Under the action of the solidified concrete, the leak-proof plate remains in place, and the removal method of the leak-proof plate is simple and easy to operate.

[0024] The extension plate is provided with an arc protrusion, and the side mold is provided with an arc groove for the arc protrusion to be inserted into.

[0025] By adopting the above technical solution, when the extension plate is inserted into the slot, the arc protrusion is located in the arc groove. The arc protrusion and the arc groove work together to improve the stability of the extension plate when it is located in the slot, thereby improving the stability of the leakage prevention plate when it is installed on the side mold.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The coordination of the various components in the present application can improve the overall stability of the high-slope anchor cable lattice beam slope protection formed by the construction. The slope protection as a whole is connected to the slope through the anchor cable, the first anchor rod and the second anchor rod. Under the coordination of the anchor cable, the second anchor rod and the connecting piece, multiple protection units are connected to each other, so that the slope protection as a whole has high stability and reliability, and can cope with poor geological construction; 2. The sections of the two plug rods close to each other are located in the sleeve and are threadedly connected to the sleeve. After the second anchor rod is installed, the sleeve is rotated to move the two plug rods in a direction away from each other. The sections of the two plug rods away from each other are in a pointed cone shape, so that the plug rods can be inserted into the corresponding protection units respectively after being rotated out. The second anchor rod is thus connected to the two adjacent protection units through the plug rod. The connection method is simple and easy to operate. 3. The casting formwork is formed by the side formwork and the top formwork as a whole. The side formwork is located above the groove and the inner side is flush with the inner side of the groove, so that the slope protection has a higher flatness after casting. Since the bottom of the side formwork does not need to be placed in the groove, the difficulty of removing the side formwork can be reduced after the concrete is solidified and formed. When the casting formwork is built, the leak-proof plate is located at the joint between the groove and the side formwork to play a blocking role. When pouring concrete into the casting formwork, the presence of the leak-proof plate can prevent concrete from seeping out from the joint between the groove and the side formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view of a slope protection formed by using a slope protection construction method for high slopes with bad geology using anchor cable lattice beams in an embodiment of the present application; Figure 2 It is a side cutaway schematic diagram of the groove in the embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Protection unit; 2. Anchor cable; 3. Groove; 4. First anchor rod; 5. Second anchor rod; 6. Casting formwork; 61. Side form; 62. Top form; 7. Sleeve; 8. Insert rod; 9. Leakage hole; 10. Limit block; 11. Limit ring groove; 12. First limit ring plate; 13. Second limit ring plate; 14. Leakage prevention plate; 15. Extension plate; 16. Slot. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] The present application embodiment discloses a method for constructing a slope protection system for high slopes with bad geology with anchor cable lattice beams. Figure 1 and Figure 2 The construction method of anchor cable lattice beam slope protection in bad geological high slope includes the following steps: S1: Divide the protection unit 1 and drive the anchor cable 2 into the connection between each protection unit 1; S2: excavating a trench 3 along the boundary of the protection unit 1; S3: A first anchor rod 4 and a second anchor rod 5 are driven into the groove 3. The first anchor rod 4 and the second anchor rod 5 are arranged vertically. The top of the first anchor rod 4 is exposed from the groove 3. The second anchor rod 5 is buried in the groove 3. A sleeve 7 is rotatably connected to the second anchor rod 5. A limited block 10 is integrally formed on the second anchor rod 5. A limited ring groove 11 is circumferentially provided in the middle of the sleeve 7. An insertion rod 8 is threadedly connected to each other at both ends of the sleeve 7. A first limited ring plate 12 is integrally formed at the ends of the two insertion rods 8 that are close to each other. Two second limited ring plates 13 are integrally formed in the sleeve 7. The ends of the two insertion rods 8 that are away from each other are in a pointed cone shape. After the second anchor rod 5 is driven into the groove 3, the sleeve 7 is rotated, the limit block 10 is located in the limit ring groove 11 and slides in the limit ring groove 11, and the first limit ring plate 12 moves with the corresponding insertion rod 8. When the first limit ring plate 12 moves to abut against the corresponding second limit ring plate 13, it is blocked by the second limit ring plate 13, and the first limit ring plate 12 is restricted from continuing to move in the same direction, and the insertion rod 8 is also restricted from continuing to move in the same direction, and the end of the insertion rod 8 is inserted into the corresponding protection unit 1; S4: constructing a frame steel bar (not shown in the figure) in the groove 3, and connecting the frame steel bar with the first anchor rod 4 and the second anchor rod 5 in the groove 3 by tying steel bars (not shown in the figure); S5: Build a casting template 6 on the groove 3, each frame steel bar is located in the casting cavity of the casting template 6, multiple casting cavities are interconnected, each casting template 6 includes two side templates 61 and a top template 62 that are arranged oppositely, the inner side of the side template 61 is detachably connected with a leakproof plate 14, the leakproof plate 14 is integrally formed with an extension plate 15, the extension plate 15 is vertically arranged with the leakproof plate 14, the side template 61 is provided with a slot 16 for the extension plate 15 to be inserted, the side template 61 is placed above the groove 3, the inner side of the side template 61 is flush with the inner side of the corresponding groove 3, and the leakproof plate 14 is located at the junction of the groove 3 and the side template 61; S6: pouring concrete into the pouring template 6, before pouring, remove the gravel and soil around the hole and on the foundation surface, so that the slope surface of the entire frame beam position is neat and clean; S7: After the concrete is solidified and formed, the top form 62 and the side form 61 are removed, and the side form 61 is moved out in the insertion direction away from the extension plate 15, and the leakproof plate 14 is left in place; Anchor cable 2 tensioning: tension anchor cable 2 once or twice to make all parts of it closely contact and make anchor cable 2 completely straight so that anchor cable 2 is evenly stressed; S8: Anchor sealing. After the anchor cable 2 tensioning test reaches 100% qualified, slowly unload and take out the jack; then use a grinding wheel cutter to reserve 50mm of the exposed part of the steel strand and then cut it off; then carry out anti-corrosion treatment on the anchor head; finally pour high-strength micro-expansion filling material; Finish the surface, cover and protect the solidified concrete with plastic sheeting or woven cloth, and carry out watering and maintenance.

[0031] In the embodiment of the present application, a plurality of leakage holes 9 are provided on the sleeve 7; in step S6, when pouring concrete into the casting template 6, the concrete will enter the inner cavity of the sleeve 7 through the leakage holes 9, and after the concrete is solidified and formed, the position of the inserted rod 8 is fixed, and the stability of the inserted rod 8 in the sleeve 7 is improved.

[0032] In the embodiment of the present application, an arc protrusion is integrally formed on the extension plate 15, and an arc groove for the arc protrusion to be inserted is opened on the side mold 61; when the extension plate 15 is inserted into the slot 16, the arc protrusion is located in the arc groove, and the arc protrusion and the arc groove cooperate to improve the stability of the extension plate 15 when it is located in the slot 16, thereby improving the stability of the anti-leakage plate 14 when it is installed on the side mold 61.

[0033] The principle of the slope protection construction method of anchor cable lattice beam in a high slope with bad geology in the embodiment of the present application is as follows: when carrying out the slope protection construction, first divide the slope protection as a whole, confirm the position of each protection unit 1, and then drive each anchor cable 2 into the connection position of each protection unit 1 one by one. After the trench 3 is excavated along the boundary of the protection unit 1, the first anchor rod 4 and the second anchor rod 5 are driven into each trench 3, the top of the first anchor rod 4 is exposed in the corresponding trench 3, and the second anchor rod 5 is buried in the corresponding trench 3 and connects the two adjacent protection units 1 through the connecting piece, so that each protection unit 1 can establish a connection through the connecting piece and the second anchor rod 5. After that, the corresponding frame steel bar is built in each trench 3, and the frame steel bar is connected to the first anchor rod 4 and the second anchor rod 5 in the corresponding trench 3. After the frame steel bar is built, a casting template 6 is built at the position of the frame steel bar, and the frame frame is located in the corresponding casting template 6 as a whole. The casting template 6 is built to form a casting cavity, and then concrete can be poured in the casting cavity. After the concrete is poured and formed, the pouring template 6 is removed and the subsequent finishing work is completed.

[0034] The coordination of the various components in the present application can improve the overall stability of the high slope anchor cable 2 lattice beam slope protection formed during construction. The overall slope protection is connected to the slope through the anchor cable 2, the first anchor rod 4 and the second anchor rod 5. With the coordination of the anchor cable 2, the second anchor rod 5 and the connecting parts, multiple protection units 1 are connected to each other, thereby making the overall slope protection have higher stability and reliability, and can cope with poor geological construction.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which 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 a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for slope protection construction of anchor cable lattice beams on high slopes with poor geological conditions, characterized in that: The following steps are involved: S1: Dividing the protection units (1), and driving anchor cables (2) into the connection points of each of the protection units (1); S2: excavating a trench (3) along the boundary of the protection unit (1); S3: driving a first anchor rod (4) and a second anchor rod (5) into the groove (3), wherein the top end of the first anchor rod (4) is exposed from the groove (3), and the second anchor rod (5) is located in the groove (3) and connects two adjacent protection units (1) via a connecting piece; S4: constructing a frame steel bar in the groove (3), and connecting the frame steel bar to the first anchor rod (4) and the second anchor rod (5) in the groove (3); S5: Building a casting template (6) on the groove (3), wherein each frame steel bar is located in a casting cavity of the casting template (6), and the plurality of casting cavities are interconnected; S6: pouring concrete into the casting formwork (6); S7: After the concrete is solidified and formed, the casting formwork (6) is removed; S8: Anchor.

2. The method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 1 is characterized by: The connecting member comprises a sleeve (7) rotatably connected to the second anchor rod (5), and an insertion rod (8) is respectively threadedly connected to both ends of the sleeve (7), and the ends of the two insertion rods (8) that are away from each other are in a pointed cone shape; in step S3, after the second anchor rod (5) is driven into the groove (3), the sleeve (7) is rotated, and the two insertion rods (8) are rotated out in a direction away from each other and are respectively inserted into the two protection units (1).

3. The method for slope protection construction of anchor cable lattice beams on high slopes with poor geological conditions according to claim 2, characterized in that: The sleeve (7) is provided with a plurality of slurry leakage holes (9).

4. The method for slope protection construction of anchor cable lattice beams on high slopes with poor geological conditions according to claim 2, characterized in that: A limiting block (10) is fixed on the second anchor rod (5), a limiting ring groove (11) is provided in the sleeve (7), and the limiting block (10) is located in the limiting ring groove (11) and is slidably connected to the limiting ring groove (11).

5. The method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 2 is characterized by: A first limiting ring plate (12) is provided at one end of the two insertion rods (8) close to each other, and two second limiting ring plates (13) are provided in the sleeve (7). The first limiting ring plate (12) is used to abut against the corresponding second limiting ring plate (13) to limit the continued movement of the insertion rods (8) in the same direction.

6. The method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 1, characterized in that: Each of the casting templates (6) comprises two side templates (61) and a top template (62) which are arranged opposite to each other. In step S5, when the casting template (6) is built on the groove (3), the side templates (61) are placed above the groove (3), and the opposite sides of the two side templates (61) are flush with the inner sides of the corresponding grooves (3).

7. The method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 6, characterized in that: A leak-proof plate (14) is arranged on the inner side of the side mold (61); in step S5, the side mold (61) is placed on the groove (3), and the leak-proof plate (14) is located at the joint between the groove (3) and the side mold (61).

8. The method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 7, characterized in that: The anti-leakage plate (14) is detachably connected to the side form (61); in step S7, when the casting form (6) is removed, the side form (61) is separated from the anti-leakage plate (14).

9. A method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 8, characterized in that: The leakage prevention plate (14) is provided with an extension plate (15), and the side mold (61) is provided with a slot (16) for inserting the extension plate (15); in step S7, when the side mold (61) is separated from the leakage prevention plate (14), the side mold (61) is moved out along the insertion direction away from the extension plate (15).

10. The method for slope protection construction of anchor cable lattice beams on high slopes with bad geology according to claim 9, characterized in that: The extension plate (15) is provided with an arc protrusion, and the side mold (61) is provided with an arc groove for the arc protrusion to be inserted into.

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