Protection structure for deep excavation cutting slope, and construction method therefor

Abstract

Disclosed in the present invention is a protection structure for a deep excavation cutting slope, the protection structure comprising: a protection plate assembly, which comprises an inner protection plate covering a slope body and an outer protection plate provided above the inner protection plate, wherein vertical sleeves distributed in a grid pattern are provided on the inner protection plate, and circular slots allowing the vertical sleeves to pass through are formed in the lower portion of the outer protection plate; a fixing assembly, which comprises a plurality of rows of anchor rods, each anchor rod comprising a threaded section matched with an internal thread and a smooth section capable of moving relative to a vertical sleeve; and an adjusting assembly, which comprises a plurality of rows of telescopic springs I, an adjusting rod connected to any row of telescopic springs I, a vertical column provided on a crest and extending into a soil mass, and a slide rail column provided on a toe, one end of the adjusting rod being connected to the vertical rod, and the other end thereof being vertically slidably connected to the slide rail column. The present invention can improve the stability of slopes, and further the protection structure can be finely adjusted in real time in response to deformation of soil masses of slopes.

Description

Deeply excavated road cutting slope protection structure and construction method thereof TECHNICAL FIELD

[0001] The present application relates to the field of slope protection. More particularly, the present application relates to a deeply excavated road cutting slope protection structure and construction method thereof. BACKGROUND

[0002] A road cutting is a roadbed made by excavating the natural ground, which functions to moderate the road longitudinal slope or the control elevation of the overpass line crossing the ridge. The road cutting slope is in the crust surface, and after being exposed by excavation, it is easily deformed and damaged by various conditions and natural factors, especially the deeply excavated road cutting slope, which often appears deformation and damage in the form of subsidence, scouring and the like, and even causes the deeply excavated road cutting slope collapse accident in serious cases, resulting in traffic interruption. In the design of the deeply excavated road cutting slope, the form of slowing down the slope is often used to reduce the probability of slope deformation and damage. The slowing down of the slope is often limited by soil conditions and construction conditions, and cannot be applied to all deeply excavated road cutting slopes. Therefore, technical personnel began to study the use of various road cutting slope protection structures to improve the stability of the road cutting slope. The existing road cutting slope protection structure can only passively protect the deformation and damage of the slope, such as adding a protection plate and an anchor rod. The protection plate is used to prevent the scouring of the slope, and the anchor rod and the friction force of the soil body are used to avoid the deformation of the slope. However, the existing road cutting slope protection structure cannot actively adjust the structure according to the deformation of the slope to achieve the purpose of dynamically protecting the deeply excavated road cutting slope. For example, the patent for invention with the application number CN106049514A and the name of a deeply excavated square soil road cutting slope protection structure and construction method discloses a deeply excavated square soil road cutting slope protection structure, which comprises a slope, a road surface, a protection plate and a plurality of protection assemblies. The protection plate is installed on the slope, the protection assembly penetrates through the slope and is placed inside the slope, the end of the protection assembly close to the slope is fixedly connected with the protection plate, and the protection assembly is fixedly connected by a pull rod and an expansion nozzle. Although the pull rod and the expansion nozzle structure improve the tensile strength of the slope protection structure to a certain extent, the stability of the slope is improved by the friction resistance between the soil body and the pull rod and between the soil body and the expansion head. However, the structure is relatively fixed, and when the soil body is deformed, the structure cannot be adjusted in time to adapt to the deformation of the soil body. With the extension of time, the protection effect of the protection structure is reduced.

[0003] SUMMARY

[0004] An object of the present application is to solve at least the above problems and to provide at least the advantages to be described later.

[0005] Another object of the present application is to provide a deeply excavated road cutting slope protection structure which can improve the stability of the slope and adjust the protection structure in real time according to the deformation of the slope soil body, thereby reducing the adverse effects of the service life on the deeply excavated road cutting slope protection structure.

[0006] To achieve these objects and other advantages in accordance with the present application, a deep cutting slope protection structure is provided, comprising:

[0007] A protection plate assembly comprising an inner protection plate covering the slope body and an outer protection plate arranged above the inner protection plate, the inner protection plate is provided with vertically distributed sleeves, the outer protection plate is provided with circular grooves below for the sleeves to pass through, the outer protection plate is provided with circular holes one communicating with the circular grooves, and the inner wall of the circular hole one is provided with internal threads;

[0008] A fixing assembly comprising a plurality of anchor rods extending into the soil from the circular hole one, the anchor rod comprises a threaded section matching the internal threads and a smooth section movable relative to the sleeve;

[0009] An adjusting assembly comprising a plurality of extension springs one extending into the sleeve from the circular hole one, an adjusting rod connecting any column of the extension springs one, a vertical column arranged on the top of the slope and extending into the soil, and a slide rail column arranged at the foot of the slope, one end of the adjusting rod is connected to the vertical column, and the other end is vertically and slidably connected to the slide rail column;

[0010] Wherein, the extension spring one is higher than the circular hole one at its natural length, and the inner protection plate is provided with circular holes two for the anchor rod to be movably inserted.

[0011] Preferably, the adjusting assembly further comprises a telescopic sleeve arranged below the inner protection plate, the telescopic sleeve is provided with an extension spring two, one end of the extension spring two is connected to the inner protection plate, and the other end is connected to a U-shaped anchor rod.

[0012] Preferably, the vertical column comprises a uniform diameter section connected to the adjusting rod and a variable diameter section arranged below the uniform diameter section, the variable diameter section comprises a plurality of side anchor arrangement columns and anchor tip columns arranged from top to bottom, the diameter of the side anchor arrangement columns gradually decreases from top to bottom, a connecting ring is arranged between adjacent side anchor arrangement columns, a pair of symmetrically arranged radial insertion grooves are arranged on any side anchor arrangement column, an insertion plate is arranged in the radial insertion groove, one end of the insertion plate is provided with a rotatable inclined plate through an extension rod, the inclined plate is inclined to the upper side anchor arrangement column, the side anchor arrangement column connected to the anchor tip column is provided with a matching socket, and the anchor tip column is provided with a matching spigot, and the free end of the anchor tip column is provided with a tapered column.

[0013] Preferably, the radial insertion grooves on the side anchor arrangement columns are arranged in a staggered manner.

[0014] Preferably, the inclined plate is inclined to the upper side anchor arrangement column at an angle of 25-50°.

[0015] Preferably, the foot of the slope is provided with an L-shaped protection plate, the vertical part of the L-shaped protection plate abuts against the protection assembly, and the slide rail column is arranged on the horizontal part of the L-shaped protection plate.

[0016] Preferably, the roof is provided with a roof guard plate abutting against the protection assembly, and the roof guard plate is provided with a through hole for the column to pass through.

[0017] The application further claims the construction method of the deep-cutting road cutting slope protection structure, comprising:

[0018] Step one, sequentially lay the inner guard plate and the outer guard plate, so that the vertical sleeve of the inner guard plate is inserted into the circular groove of the outer guard plate;

[0019] Step two, fix the anchor rod column by column, so that the circular hole one is fixed with the threaded section of the anchor rod, and the vertical sleeve is movable up and down relative to the smooth section of the anchor rod;

[0020] Step three, set the vertical rod and the slide rail column extending into the soil body at the roof and the slope foot respectively, and set the adjusting rod between the vertical rod and the slide rail column, so that one end of the adjusting rod is fixed with the vertical rod, and the other end is slidable on the slide rail column, and the bottom of the adjusting rod is connected with the extension spring one.

[0021] The application at least has the following beneficial effects: the protection assembly of the deep-cutting road cutting slope protection structure is provided with the fixed assembly and the adjusting assembly at intervals, the anchor rod of the fixed assembly is inserted into the slope soil body, so that the protection assembly is tightly attached to the slope soil body, and the adjusting assembly makes adaptive structural changes according to the deformation of the soil body; the protection plate assembly comprises the outer guard plate and the inner guard plate connected by the socket, on the one hand, the inner guard plate is provided with the extension spring one through the vertical sleeve and the circular hole one, the adjusting rod is arranged above the extension spring one, the adjusting rod is connected with the vertical rod and the slide rail column at two ends respectively, the vertical rod is inserted into the soil body, when the slope soil body subsides downward, the vertical rod is displaced downward along with the soil body, one end of the adjusting rod is connected with the vertical rod, and the other end is slidably connected on the slide rail column, after the vertical rod is displaced downward, the adjusting rod moves downward to compress the extension spring one, the elastic force generated after the compression of the spring one drives the inner guard plate to move downward, so that the inner guard plate is always tightly attached to the slope soil body, according to the deformation of the slope soil body, the protection structure is real-time fine-tuned, and the adverse effects of the service life on the deep-cutting road cutting slope protection structure are reduced; on the other hand, the U-shaped anchor rod is arranged below the inner guard plate through the extension spring two, the friction between the protection structure and the soil body is enhanced, when the local slope soil body subsides, the U-shaped anchor rod moves downward to elongate the extension spring two, the elastic force generated after the elongation of the extension spring two drives the inner guard plate to move downward to be attached to the slope soil body.

[0022] Other advantages, objects, and features of the application will be apparent from the following specification and claims. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a schematic view of the deep-cutting road cutting slope protection structure according to one technical scheme of the application;

[0024] Fig. 2 is a structural schematic diagram of the adjusting assembly according to another technical solution of the present application;

[0025] Fig. 3 is a structural schematic diagram of the column variable-diameter section according to another technical solution of the present application;

[0026] Fig. 4 is a sectional exploded view of the protection assembly according to another technical solution of the present application;

[0027] Fig. 5 is a sectional exploded view of the protection assembly according to another technical solution of the present application. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description and drawings.

[0029] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] As shown in Figs. 1-5, the present application provides a deep cutting slope protection structure, comprising:

[0031] A protection plate assembly comprising an inner protection plate 10 covering the slope body 1 and an outer protection plate 11 arranged above the inner protection plate 10, wherein the inner protection plate 10 is provided with vertically distributed vertical sleeves 23, the outer protection plate 11 is provided below with circular grooves for the vertical sleeves 23 to pass through, the outer protection plate 11 is provided with circular holes one 22 communicating with the circular grooves, and the inner wall of the circular holes one 22 is provided with internal threads;

[0032] A fixing assembly comprising a plurality of anchor rods extending from the circular holes one 22 into the soil, wherein the anchor rods comprise threaded sections adapted to the internal threads and smooth sections movable relative to the vertical sleeves 23;

[0033] An adjusting assembly comprising a plurality of extension springs one 4 extending from the circular holes one 22 into the vertical sleeves 23, an adjusting rod 8 connected to any column of the extension springs one 4, a column arranged at the top of the slope and extending into the soil, and a slide rail column 12 arranged at the foot of the slope, wherein one end of the adjusting rod 8 is connected to the column and the other end is vertically slidably connected to the slide rail column 12;

[0034] Wherein the extension springs one 4 are higher than the circular holes one at the natural length, and the inner protection plate 10 is provided with circular holes two 24 for the anchor rods to be movably inserted.

[0035] In the above technical solution, the deep cutting slope protection structure includes a protection plate assembly, a fixing assembly and an adjusting assembly, the protection plate assembly is arranged on the slope body and includes an inner protection plate 10 and an outer protection plate 11 arranged in an upper and lower manner, the outer protection plate 11 is provided with a circular hole one 22 at the top and a circular groove at the bottom, that is, the outer protection plate 11 includes a circular hole section and a groove section arranged from top to bottom when viewed from the side, the inner protection plate 10 is provided with a vertical sleeve 23 matched with the circular groove, a circular hole two 24 in communication with the vertical sleeve 23 is arranged at the bottom of the part of the inner protection plate 1 where the vertical sleeve 23 is arranged, the vertical sleeve 23 arranged in a row is perpendicular to the inner protection plate 10, that is, the vertical sleeve 23 is perpendicular to the slope, and the anchor rod of the fixing assembly is sequentially inserted into the circular hole one 22, the vertical sleeve 23 and the circular hole two 24, that is, the inner protection plate 10 provided with the circular hole two includes a sleeve section and a circular hole section arranged from top to bottom when viewed from the side, as an optimization, in order to protect the outer protection plate 11, a plurality of pads 7 are arranged on the outer protection plate 11, the number of the pads 7 corresponds to the number of rows of the circular hole one 22, the part of the inner protection plate 10 where the vertical sleeve 23 is arranged is not provided with the circular hole two 24, the vertical sleeve 23 not provided with the circular hole two 24 is also arranged in a row, a telescopic spring one 4 for arranging the adjusting assembly is arranged, and all the circular hole one 22 forms a grid on the outer protection plate 11; as an optimization, the protection plate assembly can be arranged in a modular manner, that is, the extension direction of the deep cutting, the protection plate assembly is arranged in a modular manner, and the preferred length of the modular protection assembly along the extension direction of the deep cutting is 15-35 m; the fixing assembly includes an anchor rod sequentially inserted into the deep part of the soil body from the circular hole one 22, the vertical sleeve 23 and the circular hole two 24, the anchor rod sequentially includes a threaded section and a smooth section from top to bottom, the length of the threaded section is the same as the depth of the circular hole one 22, the smooth section is slidably arranged in the vertical sleeve 23, in order to realize the movable arrangement of the smooth section of the anchor rod relative to the vertical sleeve 23, the diameter of the sleeve 23 and the diameter of the circular hole two 24 are slightly larger than the diameter of the smooth section of the anchor rod, and in the use process, after the gap between the surface of the slope soil body and the inner protection plate 10 appears due to the subsidence of the slope soil body, the inner protection plate 10 can be displaced downward relative to the anchor rod under the action of a certain force, so that the inner protection plate 10 is readjusted to be attached to the surface of the slope soil body.The adjusting assembly comprises adjusting rods 8 arranged in a row, the adjusting rods 8 are arranged above the outer cover plate 11 through the telescopic spring 1 4 arranged in the vertical sleeve 23, the bottom of the vertical sleeve 23 arranged with the telescopic spring 1 4 is not provided with the round hole 2 4, the telescopic spring 1 4 is extended out of the round hole 1 22 at the natural length, and the two ends of the adjusting rod 8 are fixed through the stand and the slide rail column 1 2 arranged at the top and the bottom of the slope respectively, the end of the adjusting rod 8 connected with the stand is fixed, and the end connected with the slide rail column 1 2 is arranged to be slidable up and down relative to the slide rail column 1 2, and the up-and-down sliding of the adjusting rod 8 relative to the slide rail column 1 2 is realized by the prior art, for example, a sliding block is arranged at the end of the adjusting rod 8, a slide rail adapted to the sliding block is arranged on the slide rail column 1 2, the sliding block is fixed in the slide rail in the horizontal direction and is movable up and down along the slide rail in the vertical direction, when the slope soil body is subsided, the stand is displaced downward to a certain extent, so that the adjusting rod 8 is also displaced downward to a certain extent, when the adjusting rod 8 is displaced downward, the telescopic spring 1 4 is compressed, the telescopic spring 1 4 has a certain elastic force after being compressed, and the inner cover plate is driven to move downward to be attached to the surface of the slope soil body.

[0036] In the technical scheme, the fixing assembly is used to fix the protection plate assembly to a certain extent, and the adjusting assembly is used to finely adjust the inner cover plate of the protection plate assembly so that the inner cover plate can be attached to the slope body even when the slope soil body is slightly deformed. The protection plate assembly comprises the outer cover plate and the inner cover plate connected through the socket, on one hand, the inner cover plate is arranged with the telescopic spring 1 4 through the vertical sleeve and the round hole 1 22, the adjusting rod 8 is arranged above the telescopic spring 1 4, the two ends of the adjusting rod 8 are connected with the stand and the slide rail column 1 2 respectively, the stand is inserted into the soil body, when the slope soil body is subsided downward, the stand is displaced downward with the soil body, the adjusting rod is connected with the stand at one end and is slidably connected on the slide rail column at the other end, after the stand is displaced downward, the adjusting rod moves downward to compress the telescopic spring 1, the elastic force generated after the telescopic spring 1 is compressed drives the inner cover plate to move downward, so that the inner cover plate is always attached to the slope soil body, the protection structure is finely adjusted in real time according to the deformation of the slope soil body, and the adverse effect of the service life on the deep excavation slope protection structure is reduced.

[0037] As shown in FIG. 1 and FIG. 2, in one of the technical solutions, the adjusting assembly further comprises a telescopic sleeve 14 arranged below the inner guard plate 10, the telescopic sleeve 14 is provided with a telescopic spring 5, one end of the telescopic spring 5 is connected to the inner guard plate 10, and the other end is connected to the U-shaped anchor rod 6, the telescopic sleeve 14 is arranged below the vertical sleeve 23 without the round hole 24, i.e. below the vertical sleeve below the adjusting rod 8, which ensures that the telescopic spring 5 is at a natural length when the U-shaped anchor rod 6 is arranged, and on the other hand, prevents the inner guard plate 10 from having a gap with the surface of the slope soil body, the U-shaped anchor rod 6 is arranged below the inner guard plate 10 through the telescopic spring 5, which enhances the friction between the protective structure and the soil body, and when the slope soil body locally subsides, the U-shaped anchor rod 6 moves downward to stretch the telescopic spring 2, the elastic force generated after the telescopic spring 2 is stretched drives the inner guard plate to move downward to fit the slope soil body, and the arrangement of the U-shaped anchor rod 6 makes the depth of the U-shaped anchor rod 6 inserted into the soil body relatively shallow compared to the anchor rod.

[0038] As shown in FIG. 2 and FIG. 3, in one of the technical solutions, the column comprises a uniform diameter section 13 connected to the adjusting rod 8 and a variable diameter section arranged below the uniform diameter section, the variable diameter section comprises a plurality of side anchor arrangement columns 16 and anchor tip columns 17 arranged in sequence from top to bottom, the diameter of the side anchor arrangement column 16 gradually decreases from top to bottom, a connecting ring 15 is arranged between adjacent side anchor arrangement columns 16, a pair of symmetrically arranged radial insertion grooves 21 are arranged on any side anchor arrangement column 16, an insertion plate 19 is arranged in the radial insertion groove 21, one end of the insertion plate 19 is provided with a rotatable inclined plate 20 through a telescopic rod, the inclined plate 20 is inclined upward to one side anchor arrangement column 16, the side anchor arrangement column 18 connected to the anchor tip column 17 is provided with a matched socket and spigot, respectively, and the free end of the anchor tip column 17 is provided with a tapered column.

[0039] In the technical scheme, the column includes a uniform diameter section 13 and a variable diameter section to increase the friction between the column and the slope soil, the variable diameter section includes a plurality of side anchor arrangement columns 16 and anchor tip columns 17 arranged in sequence from top to bottom, the side anchor arrangement column 16 connected with the anchor tip column 17 has a socket for the anchor tip column 17 to insert, that is, the length of the side anchor arrangement column 16 connected with the anchor tip column 17 is greater than the length of other side anchor arrangement columns 16, the plurality of side anchor arrangement columns 16 gradually decrease in diameter from top to bottom, and a connecting ring 15 is arranged between adjacent side anchor arrangement columns 16, the anchor tip column 17 and the plurality of side anchor arrangement columns 16 arranged in variable diameter are arranged to make the column be inserted into the slope soil more quickly, a pair of symmetrically arranged radial insertion grooves 21 are arranged on any side anchor arrangement column 16, an insertion plate 19 is arranged in the radial insertion groove 21, a rotatable inclined plate 20 is arranged on the insertion plate 19 through a telescopic rod, the inclined plate 20 is inclined to the upper side anchor arrangement column 16, that is, the inclined plate 20 serves as a side anchor of the column, one end of the inclined plate 20 is rotatably connected with the insertion plate 19, the inclined plate 20 and the insertion plate 19 are provided with the telescopic rod for supporting the inclined plate 20, and the rotatable connection between one end of the inclined plate 20 and the insertion plate 19 can be achieved by using the prior art, such as hinging, the inclined plate 20 is inclined to the upper side anchor arrangement column 16, that is, when the column is inserted into the soil, the inclination angle of the inclined plate 20 is the smallest, and during the pulling-out process after being inserted into the soil, the inclination angle of the inclined plate increases, in use, the insertion depth of the column is slightly greater than the designed depth, and the column is pulled out to the designed depth again, so as to increase the friction between the column and the slope soil and prevent the subsidence of the slope soil, that is, even if the subsidence of the slope soil occurs during the long-term use of the deep cutting slope, the great friction between the column and the slope soil can make the column move downward together with the slope soil during the subsidence of the slope soil.

[0040] As shown in FIG. 3, in one of the technical schemes, the radial insertion grooves 21 on the plurality of side anchor arrangement columns 16 are arranged in a staggered manner, the staggered arrangement of the radial insertion grooves 21 makes the arrangement directions of the inclined plates 20 different, so that the column has inclined plates with different directions in the circumferential direction, and the friction between the column and the slope soil is increased.

[0041] As shown in FIG. 3, in one of the technical schemes, the inclination angle of the inclined plate 20 relative to the upper side anchor arrangement column 16 is 25-50°, which facilitates the insertion process of the column and enables the column to have a certain inclination angle after being pulled out, so as to increase the friction between the column and the slope soil.

[0042] As shown in FIG. 1, in one of the technical schemes, the slope foot is provided with an L-shaped guard plate 3, the vertical part of the L-shaped guard plate 3 abuts against the protection assembly, and the slide rail column 12 is arranged on the horizontal part of the L-shaped guard plate 3, so as to facilitate the fixation of the guard plate assembly.

[0043] As shown in Figure 1, in one of the technical solutions, the slope top is provided with a slope top guard plate 2, the slope top guard plate 2 is in abutment with the protection assembly, the slope top guard plate 2 is provided with a through hole for the column to pass through, and the through hole facilitates fixing the guard plate assembly on the slope surface.

[0044] The application further claims to protect the construction method of the deep cutting slope protection structure, comprising:

[0045] Step one, sequentially lay the inner guard plate 10 and the outer guard plate 11, so that the vertical sleeve 23 of the inner guard plate 10 is inserted into the circular groove of the outer guard plate 11;

[0046] Step two, fix the anchor rod column by column, so that the circular hole one 22 is fixed with the threaded section of the anchor rod, and the vertical sleeve 23 is movable up and down relative to the smooth section of the anchor rod;

[0047] Step three, set the vertical rod and the slide rail column 12 which extend into the soil body at the slope top and the slope foot respectively, set the adjusting rod 8 between the vertical rod and the slide rail column 12, so that one end of the adjusting rod 8 is fixed with the vertical rod, and the other end is slidable on the slide rail column 12, and the bottom of the adjusting rod 8 is connected with the extension spring one 4.

[0048] In the above technical solutions, in step one, if the U-shaped anchor rod 6 is set, the U-shaped anchor rod is first set below the inner guard plate 10 through the extension sleeve 14 and the extension spring two 5, and then the inner guard plate 10 and the outer guard plate 11 are sequentially laid, so that the vertical sleeve 23 of the inner guard plate 10 is inserted into the circular groove of the outer guard plate 11; in step two, if the pad 7 is set, the length of the threaded section of the anchor rod is equal to the sum of the depth of the circular hole one 22 and the thickness of the pad 7, and the pad 7 is laid on the outer guard plate 11 before the anchor rod is fixed, and the pad 7 is fixed on the outer guard plate 11 through the anchor rod; in step three, when the vertical rod is set, the initial insertion depth of the vertical rod is greater than the preset depth, and then the vertical rod is pulled back to the preset depth, so that the inclined plates arranged on the vertical rod are all opened to a certain angle.

[0049] As described above, according to the present application, the present application at least includes the following beneficial effects: the present application provides the fixed components and the adjusting components which are arranged on the protection assembly of the deep cutting slope protection structure in intervals, the anchor rod of the fixed component is inserted into the slope soil, so that the protection assembly is close to the slope soil, and the adjusting component makes adaptive structural changes according to the deformation of the soil; the protection plate assembly includes the outer protection plate and the inner protection plate which are connected in a socket, on the one hand, the inner protection plate is provided with the first telescopic spring through the vertical sleeve and the circular hole, the adjusting rod is arranged above the first telescopic spring, the adjusting rod is connected with the stand and the slide rail column at two ends respectively, the stand is inserted into the soil, when the slope soil subsides downward, the stand moves downward with the soil, the adjusting rod is connected with the stand at one end, and the other end is slidably connected on the slide rail column, after the stand moves downward, the adjusting rod moves downward to compress the first telescopic spring, the elastic force generated after the first telescopic spring is compressed drives the inner protection plate to move downward, so that the inner protection plate is always close to the slope soil, the protection structure is adjusted in real time according to the deformation of the slope soil, and the adverse effect of the service life on the deep cutting slope protection structure is reduced; on the other hand, the U-shaped anchor rod is arranged below the inner protection plate through the second telescopic spring, the friction between the protection structure and the soil is enhanced, and when the slope soil locally subsides, the U-shaped anchor rod moves downward to drive the second telescopic spring to be elongated, the elastic force generated after the second telescopic spring is elongated drives the inner protection plate to move downward to be close to the slope soil.

[0050] The number of devices and the scale of processing described herein are used to simplify the description of the present application. The application, modification and change of the deep cutting slope protection structure and the construction method thereof according to the present application are obvious to those skilled in the art.

[0051] Although the embodiments of the present application have been disclosed as above, it is not limited to the application and the embodiments listed in the specification, and can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent range.

Claims

1. A deep cut slope protection structure, characterised in that, The application relates to a slope protection device. The slope protection device comprises a protection plate assembly, a fixing assembly and an adjusting assembly. The protection plate assembly comprises an inner protection plate and an outer protection plate, the inner protection plate is provided with vertically distributed sleeves, the outer protection plate is provided with circular grooves for the sleeves to pass through, the outer protection plate is provided with circular holes communicating with the circular grooves, and the inner wall of the circular holes is provided with internal threads. The fixing assembly comprises a plurality of anchor rods, the anchor rods are provided with threaded sections and smooth sections, the threaded sections are matched with the internal threads, and the smooth sections are movable relative to the sleeves. The adjusting assembly comprises a plurality of extension springs, a regulating rod, a vertical column and a slide rail column, the extension springs are arranged in the sleeves, the regulating rod is connected to the vertical column and the slide rail column, and the extension springs are connected to the regulating rod.

2. The deep cut slope protection structure according to claim 1, wherein The vertical column is provided with a uniform diameter section and a variable diameter section, the variable diameter section comprises a plurality of side anchor arrangement columns and an anchor tip column, the side anchor arrangement columns are arranged from top to bottom, the diameters of the side anchor arrangement columns gradually decrease from top to bottom, the side anchor arrangement columns are provided with connecting rings, the side anchor arrangement columns are provided with a pair of symmetrical radial insertion grooves, the radial insertion grooves are provided with insertion plates, the insertion plates are provided with rotatable inclined plates through extension rods, the inclined plates are inclined to the side anchor arrangement columns, the side anchor arrangement columns and the anchor tip column are provided with matched sockets and insertion openings, and the free end of the anchor tip column is provided with a tapered column.

3. The deep cut road cut slope protection structure of claim 2, wherein, The radial insertion grooves are arranged in a staggered mode.

4. The deep cut road cut slope protection structure of claim 3, wherein, The inclined angle of the inclined plate relative to the side anchor arrangement column is 25-50 degrees.

5. The deep cut road cut slope protection structure of claim 4, wherein, The slope is provided with an L-shaped protection plate, the vertical part of the L-shaped protection plate is abutted with the protection plate assembly, and the slide rail column is arranged in the horizontal part of the L-shaped protection plate.

6. The deep cut road cut slope protection structure of claim 1, wherein, The slope top is provided with a slope top protection plate, the slope top protection plate is abutted with the protection plate assembly, and the slope top protection plate is provided with a through hole for the vertical column to pass through.

7. The deep cut road cut slope protection structure of claim 1 wherein, The slope protection device comprises the following steps.

8. The method for constructing the deep cutting slope protection structure according to any one of claims 1 to 7, characterized in that, The inner protection plate and the outer protection plate are sequentially laid, the vertically distributed sleeves of the inner protection plate are inserted into the circular grooves of the outer protection plate. The anchor rods are fixed column by column, the circular holes are fixed with the threaded sections of the anchor rods, and the sleeves are movable relative to the smooth sections of the anchor rods. The vertical column and the slide rail column are arranged at the slope top and the slope foot respectively, the regulating rod is arranged between the vertical column and the slide rail column, one end of the regulating rod is fixed with the vertical column, the other end of the regulating rod is slidable on the slide rail column, and the extension springs are connected to the bottom of the regulating rod. ​

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