A kind of anti-tilting soft and hard interlayer high slope reinforcement structure and monitoring device

Abstract

The present invention provides a high slope reinforcement structure and monitoring device with soft and hard interlayers in the reverse tilt, and relates to the technical field of high slope reinforcement and monitoring. The application includes the first ends of several inter-rock reinforcement threaded steel bars respectively inserted into the adjacent reverse hard rock layer and reverse soft rock layer, and passed through the potential damage surface in the slope; the reinforced ground connecting beam is arranged along the surface of the slope, and covers all the reverse hard rock layers and reverse soft rock layers, the second end of the inter-rock reinforcement threaded steel bar is inserted into the reinforced ground connecting beam, and is fixedly connected with the steel bars in the reinforced ground connecting beam; the first end of the post-slope anchor pile is inserted into the stable soil body behind the slope, and the second end of the post-slope anchor pile is integrally cast with the high end of the reinforced ground connecting beam; the inter-rock grouting body is injected between the adjacent reverse hard rock layer and reverse soft rock layer, and condensed on the periphery of the first end of the inter-rock reinforcement threaded steel bar. The application can effectively resist the bending deformation of the rock layer, strengthen the strength of the rock layer, and increase the integrity and stability of the rock layer.

Description

Technical Field

[0001] The invention relates to the technical field of high slope reinforcement and monitoring, in particular to an anti-tilting soft-hard interlayer high slope reinforcement structure and a monitoring device. Background Art

[0002] In the mountainous areas of western my country, a large number of high anti-dip layered slopes have been found; for example, in the deep river valleys of the Yalong River, Dadu River, Jinsha River, Lancang River, and Minjiang River on the eastern edge of the Qinghai-Tibet Plateau, a large number of large-scale anti-dip layered rock masses have been found; most large or giant landslides occur in anti-dip slopes. At present, the methods of slope reinforcement include: grouting reinforcement, anchor reinforcement, soil nail reinforcement, prestressed anchor cable reinforcement, retaining wall reinforcement, etc.; however, these reinforcement methods have not fully combined the soft and hard alternating geological structural characteristics of the anti-dip soft and hard interlayered high slopes, and the evolution process of interlayer dislocation, bending, toppling, deformation and instability.

[0003] Therefore, there is an urgent need for a reverse-tilt soft-hard interlayer high slope reinforcement structure and monitoring device that can effectively resist rock strata bending and deformation, strengthen rock strata strength, and increase the integrity and stability of rock strata. Summary of the invention

[0004] The purpose of the present invention is to provide a reverse-tilting soft-hard interlayer high slope reinforcement structure and monitoring device, which solves the technical problem that the reinforcement means in the prior art do not fully combine the soft-hard interlayer high slope of the reverse-tilting soft-hard interlayer geological structure characteristics and the evolution process of interlayer dislocation, bending, tilting, deformation and instability. The many technical effects that can be produced by the preferred technical solution among the many technical solutions provided by the present invention are described in detail below.

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

[0006] The present invention provides a reverse-tilt soft-hard interlayer high slope reinforcement structure, comprising:

[0007] The inter-stratum reinforcing threaded steel bars, wherein the first ends of the plurality of inter-stratum reinforcing threaded steel bars are respectively inserted between adjacent reverse-dip hard rock strata and reverse-dip soft rock strata, and pass through potential failure surfaces in the slope;

[0008] A reinforced ground connecting beam, wherein the reinforced ground connecting beam is arranged along the surface of the slope and covers all the anti-dip hard rock layer and the anti-dip soft rock layer, and the second end of the reinforcing threaded steel bar between the rock layers penetrates into the reinforced ground connecting beam and is fixedly connected with the steel bar in the reinforced ground connecting beam;

[0009] Anchor piles behind the slope, wherein the first end of the anchor piles behind the slope penetrates into the stable soil behind the slope, and the second end of the anchor piles behind the slope is integrally cast with the high end of the reinforced ground connecting beam;

[0010] The inter-stratum grouting body is injected between the adjacent reverse-dip hard rock stratum and the reverse-dip soft rock stratum, and solidified on the first end circumference side of the inter-stratum reinforcing threaded steel bar.

[0011] Preferably, the second end of the inter-strata reinforcing threaded steel bar is configured to be in a hook shape.

[0012] Preferably, the reinforced ground connecting beam is provided with upper and lower layers of the steel bars, and the upper and lower layers of the steel bars are respectively fixedly connected to the second ends of the reinforcing threaded steel bars between the rock layers.

[0013] Preferably, the upper and lower layers of steel bars are respectively tied to the second ends of the reinforcing threaded steel bars between the rock layers as a whole.

[0014] Preferably, the inter-stratum grouting body is one of cement slurry and polymer slurry.

[0015] A monitoring device is installed on the above-mentioned anti-dip soft and hard interlayer high slope reinforcement structure, comprising: a normal stress monitoring device, a tangential stress monitoring device, a seepage pressure monitoring device arranged between the adjacent anti-dip hard rock layer and the anti-dip soft rock layer, and a surface displacement monitoring device arranged on the slope.

[0016] Preferably, the normal stress monitoring device comprises a transverse strain gauge, and the transverse strain gauge is installed between the adjacent reverse-dip hard rock layer and the reverse-dip soft rock layer through the inter-rock layer reinforcing threaded steel bars.

[0017] Preferably, the tangential stress monitoring device comprises a longitudinal strain gauge, and the longitudinal strain gauge is installed between the adjacent reverse-dip hard rock layer and the reverse-dip soft rock layer through the inter-rock layer reinforcing threaded steel bars.

[0018] Preferably, the permeability pressure monitoring device comprises a permeability pressure meter, and the permeability pressure meter is installed between the adjacent reverse-dip hard rock layer and the reverse-dip soft rock layer through the reinforcing threaded steel bars between the rock layers.

[0019] Preferably, the surface displacement monitoring device comprises a wireless intelligent displacement sensor, and a plurality of the wireless intelligent displacement sensors are fixedly connected to the reinforced ground connecting beam.

[0020] In the technical solution provided by the present invention, the inter-rock reinforcement threaded steel bars are additional load-bearing structures for the bending and deformation of the anti-dip hard rock layer and the anti-dip soft rock layer; the reinforced ground connection beam is mainly used to increase the integrity of the slope rock layer. At the same time, the stability of the slope rock layer can be intuitively judged by observing the deformation and crack development of the reinforced ground connection beam; the back-slope anchor pile provides anchor tension for the anti-dip rock layer through the reinforced ground connection beam, which is a structure used to inhibit the bending, tilting, deformation and sliding of the anti-dip rock layer toward the free surface of the slope; the inter-rock grouting body is a bonding reinforcement material between the rock layers, and is also a material for inhibiting the inter-layer dislocation of the anti-dip slope. After solidification and hardening, it is distributed around the inter-rock reinforcement threaded steel bars. On the whole, the present application can effectively resist the bending and deformation of the rock layer, strengthen the strength of the rock layer, and increase the integrity and stability of the rock layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the reinforcement of the reverse-tilting soft-hard interlayer high slope of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of the reinforced state of the high side slope of the reverse-dip rock layer of the present invention;

[0024] Figure 3 This is a schematic diagram of the inter-stratum reinforcing threaded steel bar of the present invention;

[0025] Figure 4 It is a flow chart of the monitoring of the anti-tilting soft and hard interlayer high slope reinforcement of the present invention.

[0026] In the figure, 1- wireless intelligent displacement sensor; 2- reinforced ground connection beam; 3- anti-tilt hard rock layer; 4- anti-tilt soft rock layer; 5- stable soil behind the slope; 6- reinforced threaded steel bars between rock layers; 7- grouting between rock layers; 8- potential failure surface in the slope; 9- anchor piles behind the slope; 10- transverse strain gauge; 11- seepage pressure gauge; 12- longitudinal strain gauge. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0028] Example 1

[0029] refer to Figure 1-3 The specific embodiment of the present invention provides a reverse-tilt soft-hard interlayer high slope reinforcement structure, comprising:

[0030] The inter-stratum reinforcing threaded steel bars 6, the first ends of the plurality of inter-stratum reinforcing threaded steel bars 6 respectively penetrate between the adjacent anti-dip hard rock strata 3 and the anti-dip soft rock strata 4, and pass through the potential failure surface 8 in the slope;

[0031] A reinforced ground connection beam 2 is arranged along the surface of the slope and covers all the anti-tilting hard rock layers 3 and anti-tilting soft rock layers 4. The second end of the reinforcing threaded steel bar 6 between the rock layers penetrates into the reinforced ground connection beam 2 and is fixedly connected with the steel bars in the reinforced ground connection beam 2;

[0032] Anchor piles 9 behind the slope, the first end of which penetrates into the stable soil 5 behind the slope, and the second end of which is integrally cast with the high end of the reinforced ground connecting beam 2;

[0033] The inter-stratum grouting body 7 is injected between the adjacent reverse-tilted hard rock layer 3 and the reverse-tilted soft rock layer 4, and solidified on the first end circumference side of the inter-stratum reinforcing threaded steel bar 6.

[0034] At present, the methods of slope reinforcement include grouting reinforcement, anchor reinforcement, soil nail reinforcement, prestressed anchor cable reinforcement, retaining wall reinforcement, etc. However, these reinforcement methods do not fully combine the soft and hard alternating geological structural characteristics of the anti-dip soft and hard interlayered high slope, and the evolution process of interlayer dislocation, bending, tilting, deformation and instability. In the present application, the inter-rock reinforcement threaded steel bar 6 is an additional load-bearing structure for the bending and deformation of the anti-tilting hard rock layer 3 and the anti-tilting soft rock layer 4; the reinforced ground connection beam 2 is mainly used to increase the integrity of the slope rock layer. At the same time, the stability of the slope rock layer can be intuitively judged by observing the deformation and crack development of the reinforced ground connection beam 2; the back-slope anchor pile 9 provides anchor tension for the anti-tilting rock layer through the reinforced ground connection beam 2, which is a structure used to inhibit the bending, tilting, deformation and sliding of the anti-tilting rock layer toward the free surface of the slope; the inter-rock grouting body 7 is a bonding reinforcement material between the rock layers, and is also a material for inhibiting the inter-layer dislocation of the anti-tilting slope. After solidification and hardening, it is distributed around the inter-rock reinforcement threaded steel bar 6. On the whole, the present application can effectively resist the bending and deformation of the rock layer, strengthen the strength of the rock layer, and increase the integrity and stability of the rock layer.

[0035] The anchor piles 9 behind the slope are formed by drilling holes in the stable soil 5 behind the slope with a large diameter drilling device, inserting a steel cage, and then pouring concrete, and are integrally cast with the reinforced ground connecting beam 2.

[0036] To further optimize the solution, the second end of the reinforcing threaded steel bar 6 between the rock layers is set to be in a hook shape.

[0037] According to a further optimized solution, an upper layer and a lower layer of steel bars are arranged in the reinforced ground coupling beam 2, and the upper layer and the lower layer of steel bars are respectively fixedly connected to the second ends of the reinforcing threaded steel bars 6 between the rock layers.

[0038] To further optimize the solution, the upper and lower layers of steel bars are respectively tied to the second ends of the reinforcing threaded steel bars 6 between the rock layers as a whole.

[0039] The first end of the inter-rock reinforcing threaded steel bar 6 is inserted into the borehole between the adjacent anti-dip hard rock layer 3 and the anti-dip soft rock layer 4, and the extension length exceeds the potential failure surface 8 in the slope; the second end of the inter-rock reinforcing threaded steel bar 6 is hook-shaped, extending out of the slope surface, and is tied into a whole with the upper and lower layers of longitudinal force-bearing steel bars of the reinforced ground connecting beam 2, effectively improving the overall structural strength and stability.

[0040] According to a further optimization scheme, the inter-stratum grouting body 7 is one of cement slurry and polymer slurry.

[0041] The selection and proportion of the material for the inter-rock grouting body 7 should be adjusted accordingly according to the properties of the soft and hard rock layers of the slope and the construction needs.

[0042] Example 2

[0043] refer to Figure 1-4 The present invention provides a monitoring device installed on the anti-dip soft and hard interlayer high slope reinforcement structure in Example 1, including: a normal stress monitoring device, a tangential stress monitoring device, a seepage pressure monitoring device arranged between adjacent anti-dip hard rock layers 3 and anti-dip soft rock layers 4, and a surface displacement monitoring device arranged on the slope.

[0044] During the service life of the reinforced structure, the normal stress between rock layers is calculated by collecting changes in the normal stress monitoring device, thereby determining the downward thrust transmitted between adjacent rock layers; the bending stress of the rock layer is calculated by collecting changes in the tangential stress monitoring device; the distribution of seepage water in the rock layer is determined by collecting changes in the seepage pressure monitoring device; the surface displacement monitoring device transmits its own displacement information to the indoor monitoring center, and the stability of the slope rock layer can be determined through data processing and comparative analysis.

[0045] According to a further optimized solution, the normal stress monitoring device includes a transverse strain gauge 10, which is installed between the adjacent anti-dip hard rock layer 3 and the anti-dip soft rock layer 4 through the inter-rock reinforcement threaded steel bars 6.

[0046] According to a further optimization scheme, the tangential stress monitoring device includes a longitudinal strain gauge 12, which is installed between the adjacent anti-dip hard rock layer 3 and the anti-dip soft rock layer 4 through the inter-rock reinforcement threaded steel bars 6.

[0047] According to a further optimized solution, the permeability pressure monitoring device includes a permeability pressure meter 11, which is installed between the adjacent reverse-dip hard rock layer 3 and the reverse-dip soft rock layer 4 through the inter-rock reinforcement threaded steel bars 6.

[0048] According to a further optimized solution, the surface displacement monitoring device includes a wireless intelligent displacement sensor 1 , and a plurality of wireless intelligent displacement sensors 1 are fixedly connected to the reinforced ground connecting beam 2 .

[0049] Compared with the prior art, the advantages of the present invention are as follows:

[0050] One of the advantages of the present invention is that the inter-stratum reinforcing threaded steel bars 6 are common building materials with a wide supply source and good economy.

[0051] The second advantage of the present invention is that in view of the fact that the reverse-tilting soft and hard interlayered slopes often bend and collapse, the reinforcing threaded steel bars 6 between the rock layers have high tensile strength and are longitudinally distributed between the gaps between the rock layers, providing load-bearing components to resist the bending deformation of the rock layers, thereby compensating for the defect of large deflection of the bending deformation of the rock layers.

[0052] The third advantage of the present invention is that interlayer dislocation is easily formed between rock layers in the reverse-dipping soft and hard interlayer slope, and seepage water is easy to fill in it, weakening the strength parameters of the rock layer; after the grouting body 7 is injected between the rock layers, the cohesion between the rock layers can be increased and the interlayer dislocation can be inhibited; at the same time, the deterioration effect of underground seepage water on the rock layer can be reduced.

[0053] The fourth advantage of the present invention is that the reinforced ground connection beam 2 is arranged on the slope surface, which increases the integrity of the slope rock layer. At the same time, the stability state of the slope rock layer can be intuitively judged by observing the deformation and crack development of the reinforced ground connection beam 2.

[0054] The fifth advantage of the present invention is that while reinforcing the slope, a monitoring device is installed at the same time, saving construction costs; at the same time, the interlayer force of the anti-dip rock layer is monitored, which is a unique technical means for this type of slope and can accurately grasp the deformation evolution process inside the slope.

[0055] The monitoring process of the anti-tilting soft and hard interlayer high slope reinforcement is as follows:

[0056] 1. Conduct field geological surveys on the high sides of anti-dip soft and hard interlayers in hydropower projects, highway projects and other fields, and analyze the necessity of reinforcement monitoring;

[0057] 2. Design the reverse-tilt soft-hard interlayer slope to be reinforced and monitored, determine the length, quantity and layout of the reinforcing threaded steel bars 6 between the rock layers, the layout of various monitoring sensors, the grouting material ratio, etc.;

[0058] 3. Clean the surface of the slope, use small-diameter drilling equipment to drill grouting holes between the rock layers along the direction of the rock layer, and use large-diameter drilling and rotary drilling equipment to excavate anchor reinforced concrete pile holes in the soil behind the slope;

[0059] 4. Place the monitoring sensors arranged between the rock layers and the reinforcing threaded steel bars 6 between the rock layers into the grouting holes, straighten out the sensor lines at the same time, and fix and protect the surface line joints;

[0060] 5. Prepare the grouting material according to the designed ratio, and use high-pressure equipment to inject grouting into the rock layer through the grouting hole until the slurry overflows from the hole;

[0061] 6. First, tie up the steel bar skeleton of the anchor pile 9 behind the slope, and place it in the anchor reinforced concrete pile hole, then tie up the steel bars of the reinforced ground connecting beam 2, and then support the formwork;

[0062] 7. After pouring the concrete of the anchor piles 9 and the reinforced ground connection beam 2, before the concrete solidifies, install several wireless intelligent displacement sensors 1 on the reinforced ground connection beam 2;

[0063] 8. The indoor monitoring center receives data sent back by the wireless intelligent displacement sensor 1 to analyze the displacement of the slope surface and determine whether it is necessary to conduct further on-site exploration in order to accurately determine the stability of the slope;

[0064] 9. At the slope site, the deformation of the reinforced ground coupling beam 2 is observed. At the same time, the strain sensor inside the slope is connected to measure the strain magnitude and calculate the stress distribution between the rock layers inside the slope, so as to comprehensively analyze the stability of the slope.

[0065] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0066] In the description of this article, it is also necessary to explain 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A reverse-tilt soft-hard interlayer high slope reinforcement structure, characterized in that: include: inter-stratum reinforcing threaded steel bars (6), wherein the first ends of a plurality of the inter-stratum reinforcing threaded steel bars (6) are respectively inserted between adjacent reverse-dip hard rock strata (3) and reverse-dip soft rock strata (4), and pass through potential failure surfaces (8) in the slope; A reinforced ground connecting beam (2), wherein the reinforced ground connecting beam (2) is arranged along the surface of the slope and covers all of the reverse-tilted hard rock layer (3) and the reverse-tilted soft rock layer (4), and the second end of the inter-rock layer reinforcing threaded steel bar (6) penetrates into the reinforced ground connecting beam (2) and is fixedly connected to the steel bars in the reinforced ground connecting beam (2); Anchor piles (9) behind the slope, wherein the first end of the anchor piles (9) behind the slope penetrates into the stable soil (5) behind the slope, and the second end of the anchor piles (9) behind the slope is integrally cast with the high end of the reinforced ground connecting beam (2); The inter-stratum grouting body (7) is injected between the adjacent reverse-tilted hard rock layer (3) and the reverse-tilted soft rock layer (4), and solidified on the first end circumference side of the inter-stratum reinforcing threaded steel bar (6).

2. The anti-tilting soft-hard interlayer high slope reinforcement structure according to claim 1 is characterized in that: The second end of the inter-stratum reinforcing threaded steel bar (6) is configured to be in a hook shape.

3. The anti-tilting soft and hard interlayer high slope reinforcement structure according to claim 1 is characterized in that: The reinforced ground connecting beam (2) is provided with upper and lower layers of steel bars, and the upper and lower layers of steel bars are respectively fixedly connected to the second ends of the inter-rock layer reinforcing threaded steel bars (6).

4. The anti-tilting soft-hard interlayer high slope reinforcement structure according to claim 3 is characterized in that: The upper and lower layers of steel bars are respectively tied to the second ends of the inter-rock reinforcement threaded steel bars (6) to form a whole.

5. The anti-tilting soft-hard interlayer high slope reinforcement structure according to claim 1 is characterized in that: The inter-stratum grouting body (7) is one of cement slurry and polymer slurry.

6. A monitoring device, characterized in that: Installed on the anti-dip soft and hard interlayer high slope reinforcement structure described in any one of claims 1-5, it includes: a normal stress monitoring device, a tangential stress monitoring device, a seepage pressure monitoring device arranged between the adjacent anti-dip hard rock layer (3) and the anti-dip soft rock layer (4), and a surface displacement monitoring device arranged on the slope.

7. The monitoring device according to claim 6, characterized in that: The normal stress monitoring device comprises a transverse strain gauge (10), and the transverse strain gauge (10) is installed between the adjacent reverse-dip hard rock layer (3) and the reverse-dip soft rock layer (4) through the inter-rock layer reinforcing threaded steel bars (6).

8. The monitoring device according to claim 6, characterized in that: The tangential stress monitoring device comprises a longitudinal strain gauge (12), and the longitudinal strain gauge (12) is installed between the adjacent reverse-dip hard rock layer (3) and the reverse-dip soft rock layer (4) through the inter-rock layer reinforcing threaded steel bars (6).

9. The monitoring device according to claim 6, characterized in that: The permeability pressure monitoring device comprises a permeability pressure meter (11), and the permeability pressure meter (11) is installed between the adjacent reverse-dip hard rock layer (3) and the reverse-dip soft rock layer (4) through the inter-rock layer reinforcing threaded steel bars (6).

10. The monitoring device according to claim 6, characterized in that: The surface displacement monitoring device comprises a wireless intelligent displacement sensor (1), and a plurality of the wireless intelligent displacement sensors (1) are fixedly connected to the reinforced ground connecting beam (2).

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