Fully-weathered granite cutting slope supporting structure

Abstract

The utility model belongs to the technical field of side slope construction, and particularly relates to a fully-weathered granite cutting side slope supporting structure, the height of a side slope is larger than 10 meters, the supporting structure comprises a reinforced microphone pad laid on the side slope, the reinforced microphone pad comprises a plurality of reinforcing ribs arranged in parallel, and the reinforcing ribs are arranged in parallel. Each reinforcing rib is fixed through a plurality of anchor rods and anchor bearing plates, the reinforced microphone pad is located at the top and the bottom of the side slope to form a reverse wrapping area, the width of the reverse wrapping area is 0.3 m-0. 5m, the reverse wrapping area is provided with a supporting rope, the supporting rope is arranged in the transverse direction of the side slope, and the two ends of the supporting rope are fixed through supporting rope anchor rods and supporting rope anchor bearing plates. The fully-weathered granite cutting slope supporting structure can enhance the stability of the slope, and is simple to construct and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of slope construction, especially relates to full weathered granite cutting slope supporting structure. BACKGROUND

[0002] Slope refers to the slope surface with certain gradient made on both sides of roadbed to ensure the stability of roadbed, which can be divided into soil slope and rock slope. The full weathered granite slope is prone to serious problems in slope engineering. The full weathered granite is extremely soft rock, and the rock mass is extremely easy to break, and has the characteristics of softening and disintegrating when encountering water, so it is easy to collapse and collapse when encountering rain and snow weather.

[0003] The Chinese patent with publication number CN203334299U discloses a weathered coarse-grained granite slope coconut fiber net ecological protection structure. It comprises a slope body and a plurality of anchor rods inserted into the slope body, the surface of the slope body is provided with a galvanized iron wire mesh, the surface of the slope body in the galvanized iron wire mesh grid is sprayed with a thick layer of base material, and the surface of the thick layer of base material is fixed with a coconut fiber net that can stabilize the thick layer of base material on the surface of the slope. The patent covers the coconut fiber net on the surface of the thick layer of base material, which can effectively prevent water and soil loss, create a good environment for the survival of grasses and shrubs, and achieve the effects of reinforcing the slope, preventing erosion, and being green and beautiful. However, this scheme is prone to cause collapse and landslide of the slope when used in the case of high slope height, which threatens the safety of highway driving and increases the maintenance cost in the later period. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the above background technology, and to provide a full weathered granite cutting slope supporting structure that can enhance the stability of the slope and has low maintenance cost in the later period.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a full weathered granite cutting slope supporting structure, the height of the slope is greater than 10 meters, the supporting structure comprises a reinforced macadam laid on the slope, the reinforced macadam comprises a plurality of parallel arranged reinforcing bars, each reinforcing bar is fixed by a plurality of anchor rods and anchor pads, the reinforced macadam is located at the top and the bottom of the slope to form a reverse packing area, the width of the reverse packing area is 0.3m-0.5m, a support rope is arranged on the reverse packing area, the support rope is arranged along the transverse direction of the slope, and both ends of the support rope are fixed by support rope anchor rods and support rope anchor pads.

[0006] In an embodiment, the reinforced macadam is a double-twisted hexagonal grid reinforced macadam, and the spacing between adjacent reinforcing bars is 100cm-120cm.

[0007] In an embodiment, the reinforced macadam pad comprises a plurality of unit net pads, adjacent unit net pads are connected by a plurality of connecting buckles, and the spacing between adjacent connecting buckles is not greater than 20 cm.

[0008] In an embodiment, both sides of the unit net pad are provided with edge end steel wire ropes, and when adjacent unit net pads are spliced, the connecting buckles buckle the adjacent edge end steel wire ropes together.

[0009] In an embodiment, the steel wire rope is fixed by a plurality of rope clamps, and the diameter of the steel wire rope is 12 mm to 16 mm.

[0010] In an embodiment, the anchor rod is a full-length bonded tension concentration type anchor rod, and the incidence angle of the anchor rod with the horizontal direction is 10 to 20°.

[0011] In an embodiment, the supporting structure is provided with a plurality of drainage holes near the road surface.

[0012] Compared with the prior art, the beneficial effects of the full-weathered granite cutting slope supporting structure are as follows: the above-mentioned full-weathered granite cutting slope supporting structure, the slope of more than 10 meters belongs to a high-risk engineering, and the stability, design and construction thereof need to be more strict. In the application, the reinforced macadam pad is used as basic support, the reinforced macadam pad is composed of a geogrid (reinforced layer) made of high-density polyethylene (HDPE) or polypropylene (PP) and a three-dimensional vegetation net (macadam pad), and has mechanical reinforcement and ecological protection functions. The top and bottom are reinforced by the support rope and the anchor rod in the backfill area, which effectively enhances the stability of the high-height slope, reduces the risk of geological disasters such as collapse and landslide, reduces the construction cost and the later maintenance cost, and avoids resource waste caused by excessive protection. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0014] Fig. 1 It is a structural schematic view of the full-weathered granite cutting slope supporting structure of an embodiment.

[0015] Fig. 2 It is a structural schematic view of the reinforced macadam pad of the full-weathered granite cutting slope supporting structure of an embodiment.

[0016] Fig. 3It is a schematic view of a reinforced macadam unit mat structure of a full-weathered granite cutting slope supporting structure according to an embodiment of the present application.

[0017] Reference numerals: 10: reinforced macadam; 110: unit mat; 120: reinforcing rib; 130: edge steel wire rope; 140: connecting buckle; 20: anchor rod; 30: support rope; 32: steel wire rope anchor rod; 34: rope clamp. DETAILED DESCRIPTION

[0018] In order to make the above and other features and advantages of the present application clearer, further descriptions will be made to the present application with reference to the drawings. It should be understood that the specific embodiments given herein are intended for the purpose of explanation and are only exemplary but not limiting.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0020] In addition, the terms "first", "second", "third" and the like are only used for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0021] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0024] Please refer to Figs. 1-3 The application discloses a full-weathered granite cutting slope supporting structure, which is used for the case that the height of a slope is greater than 10 m. The supporting structure comprises a reinforced macadam mat 10 laid on the slope, wherein the reinforced macadam mat 10 is composed of a geogrid (reinforced layer) made of high-density polyethylene (HDPE) or polypropylene (PP) and a three-dimensional vegetation net (macadam mat), and has the functions of mechanical reinforcement and ecological protection; load is dispersed through the reinforced layer, and the anti-sliding and anti-scouring abilities of the slope are improved.

[0025] Specifically, the reinforced macadam mat 10 comprises a plurality of parallelly arranged reinforcing ribs 120, each reinforcing rib 120 is fixed through a plurality of anchor rods 20 and anchor pads, the reinforced macadam mat 10 is located at the top and the bottom of the slope to form a reverse wrapping area, the width of the reverse wrapping area is 0.3 m-0.5 m, a supporting rope 30 is arranged on the reverse wrapping area, the supporting rope 30 is arranged in the transverse direction of the slope, and both ends of the supporting rope 30 are fixed through a supporting rope anchor rod 32 and a supporting rope 30 anchor pad.

[0026] Specifically, in an embodiment, the reinforced mesh pad 10 is a double-twisted hexagonal mesh reinforced pad, and the distance between adjacent reinforcing ribs 120 is 100 cm to 120 cm. The reinforced mesh pad 10 comprises a plurality of unit mesh pads 110, and adjacent unit mesh pads 110 are connected by a plurality of connecting buckles 140, and the distance between adjacent connecting buckles 140 is not greater than 20 cm. Preferably, both sides of the unit mesh pad 110 are provided with an edge end steel wire rope 130, and when adjacent unit mesh pads 110 are spliced, the connecting buckle 140 buckles the adjacent edge end steel wire ropes 130 together. By providing the edge end steel wire rope 130, higher stability can be provided, especially when two adjacent unit mesh pads 110 are connected by the connecting buckle 140, the structural stability is enhanced. Specifically, the support rope 30 provided in the top and bottom reverse wrapping area is preferably a steel wire rope, and is fixed by a plurality of rope clamps 34. The diameter of the steel wire rope is 12 mm to 16 mm, and the strength is preferably greater than 1770 MPa. The rope clamp 34 is an EN13411-5 B type rope clamp 34 matched with the steel wire rope. Preferably, the anchor rod 20 is a full-length bonded tension concentration type anchor rod, and the incident angle of the anchor rod 20 is 10 to 20° with the horizontal direction. The use of the above incident angle can improve the anchoring capacity and facilitate construction. The full-length bonded tension concentration type anchor rod is a supporting structure combining full-length bonding technology and local stress enhancement design, mainly used for reinforcement and stability in geotechnical engineering, the overall uplift capacity is significantly improved, effectively preventing landslides and improving stability. Preferably, for the area where the mesh surface is suspended and cannot closely adhere to the slope surface, anchor rods 20 can be added at the suspended position to improve the supporting stability of the reinforced mesh pad 10 to the slope. In an embodiment, a plurality of drainage holes are provided at the bottom of the supporting structure close to the road surface. Preferably, the drainage holes are arranged at a certain interval to timely drain the accumulated water in the slope body and reduce the pore water pressure.

[0027] The full-weathered granite cut slope supporting structure of the above embodiment is obtained by using the following construction method:

[0028] S10, the anchor rod 20 hole position is laid out with the lowest elevation of the protection range as the reference line.

[0029] Specifically, if the slope surface is uneven, the anchor rod 20 can be adjusted appropriately when arranged, and the anchor rod 20 hole position is selected as much as possible in the low concave position. If necessary, local densification treatment can be performed, and for the area where the mesh surface is suspended and cannot closely adhere to the slope surface, local anchor rods 20 should be added at the suspended position.

[0030] S20, drill a hole according to the designed depth and clean the hole, grout and insert the anchor rod 20.

[0031] The grouting adopts cement mortar with a grade not lower than M20, and the cement is preferably 42.5 ordinary portland cement. The grouting is cured for not less than 3 days before the next process is performed. The incident angle of the anchor rod 20 should be 10 to 20° with the horizontal direction.

[0032] S30, install the support rope 30 at the top of the slope.

[0033] At the top of the slope, the support rope 30 is wrapped and fixed on the anchor head sleeve of the anchor rod 20 at the starting point, and then is sequentially passed through the sleeves of the anchor heads of the adjacent anchor rods 20 along the slope direction until the end anchor rod 20, and then is pulled tight and is wrapped and fixed in the same way as the starting point. The wrapping part is fixed by multiple rope clamps 34, and preferably, is fixed by at least three rope clamps 34.

[0034] S40, hang the reinforced macadam mat 10 from top to bottom.

[0035] The top of the laid reinforced macadam mat 10 is wrapped around the support rope 30 at the top of the slope and is folded and wrapped by 0.3m-0.5m, and the wrapping part is fixed by the rope clamp 34 and the twisted steel wire. The laying is sequentially performed along the slope direction until the slope surface area is completely covered, and the horizontally adjacent net surfaces are connected by multiple connecting buckles 140. Preferably, the installation interval of the adjacent connecting buckles 140 is 15-20cm.

[0036] S50, install the support rope 30 at the bottom of the slope. The installation mode of the two ends of the support rope 30 is referred to the installation mode of the support rope 30 at the top.

[0037] In the above-mentioned full-weathered granite cutting slope support structure, the slope with a height of more than 10m belongs to a high-risk engineering, and the stability, design and construction thereof need to be more strict. In the application, the reinforced macadam mat is used as the basic support, the reinforced macadam mat is composed of the geogrid (reinforced layer) made of high-density polyethylene (HDPE) or polypropylene (PP) and the three-dimensional vegetation net (macadam mat), and has the functions of mechanical reinforcement and ecological protection. The top and the bottom are reinforced by the support rope and the anchor rod in the wrapping area, which effectively enhances the stability of the large-height slope, reduces the geological disaster risks such as collapse and landslide, reduces the construction cost and the later maintenance cost, and avoids the resource waste caused by excessive protection.

[0038] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A completely weathered granite cut slope support structure, characterized by, The height of the slope is greater than 10 meters, the supporting structure comprises a reinforced macadam mat laid on the slope, the reinforced macadam mat comprises a plurality of parallel reinforcing bars, each reinforcing bar is fixed by a plurality of anchor rods and anchor plates, the reinforced macadam mat forms a reverse wrapping area at the top and the bottom of the slope, the width of the reverse wrapping area is 0.3-0.5m, a support rope is arranged on the reverse wrapping area, the support rope is arranged along the transverse direction of the slope, and both ends of the support rope are fixed by support rope anchor rods and support rope anchor plates.

2. The fully-weathered granite cut slope support structure according to claim 1, characterized by, The reinforced macadam mat is a double-twisted hexagonal grid reinforced macadam mat, and the spacing between adjacent reinforcing bars is 100-120cm.

3. The fully-weathered granite cut slope support structure according to claim 1, characterized in that, The reinforced macadam mat comprises a plurality of unit net mats, adjacent unit net mats are connected by a plurality of connecting buckles, and the spacing between adjacent connecting buckles is not greater than 20cm.

4. The fully-weathered granite cut slope support structure according to claim 3, characterized in that, Both sides of the unit net mat are provided with edge steel wire ropes, and when adjacent unit net mats are spliced, the connecting buckles buckle the adjacent edge steel wire ropes together.

5. The fully-weathered granite cut-slope support structure according to claim 1, characterized in that, The support rope is a steel wire rope, the steel wire rope is fixed by a plurality of rope clamps, and the diameter of the steel wire rope is 12-16mm.

6. The fully-weathered granite cut-slope support structure according to claim 1, characterized by, The anchor rod is a full-length bonded tension concentration type anchor rod, and the incident angle of the anchor rod with the horizontal direction is 10-20°.

7. The fully-weathered granite cut-slope support structure according to claim 1, characterized by, The supporting structure is provided with a plurality of drainage holes near the road surface.

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