Slope top intercepting ditch structure based on excavation rock slope

Abstract

The utility model relates to the field of slope water interception and drainage, in particular to a slope crest intercepting ditch structure based on excavation rock, which comprises structural steel bars and masonry bodies, the structural steel bars are arranged on the slope crest at set intervals along the trend of a slope and are perpendicular to a slope surface, and the structural steel bars are connected with slope surface steel bars and are anchored into a slope surface concrete surface layer; the masonry body comprises a brick masonry and sprayed concrete, the brick masonry is formed by laying hollow bricks on structural steel bars, and the hollow bricks are filled with the sprayed concrete, so that the brick masonry and the structural steel bars are connected into a whole. The brick masonry built by the hollow bricks is constructed on the structural steel bars at the top of the slope, the concrete is sprayed into the brick masonry, and the brick masonry and the structural steel bars are connected into a whole to form the intercepting ditch, so that the structure is simple, convenient and rapid to construct, does not need to manually excavate grooves and build pouring molds, does not need to be constructed by large-scale mechanical equipment, and has the advantages of low manufacturing cost, high construction efficiency and the like. The requirement of construction on the width of a working face is low.

Description

Technical Field

[0001] The utility model relates to the field of slope interception and drainage, in particular to a water interception ditch structure based on the top of an excavated rock slope. Background Art

[0002] During construction, it is common to encounter existing excavated slope damage and defects, such as bulging, seepage, and cracks caused by water flow, which affect the slope's bearing capacity. In order to ensure the long-term stability of the slope, it is necessary to construct intercepting ditches to reduce damage.

[0003] Currently, the methods commonly used for cutting / draining ditches on slopes include: first, mechanically or manually, digging a trench at the top of the slope, then pouring reinforced concrete or building a brick wall to form the cutting / draining ditch. However, these cutting / draining ditches all have certain drawbacks: Machinery cannot reach the top of already formed high slopes, and manual excavation on rocky slopes is not only ineffective but also time-consuming and labor-intensive. Furthermore, the lack of a construction access road at the top makes it difficult to transport construction materials such as cement, sand, and formwork to the top, increasing construction costs while slowing down the construction process and posing a high safety risk.

[0004] Based on the above problems, there is an urgent need to develop a slope top drainage construction technology that is simple, fast, safe and applicable. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art. To this end, the utility model provides a cut-off ditch structure based on the top of an excavated rock slope and a construction method thereof.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provided is a drainage ditch structure for the top of an excavated rock slope, comprising structural steel bars and a masonry body. The structural steel bars are arranged at the top of the slope at set intervals along the direction of the slope and are connected to the slope surface steel bars and anchored into the concrete surface layer of the slope. The masonry body comprises brickwork and sprayed concrete. The brickwork is formed by laying hollow bricks on the structural steel bars, and the sprayed concrete is filled in the hollow bricks, so that the brickwork and the structural steel bars are connected into a whole.

[0008] In some optional embodiments, the brickwork is constructed by mortar laying, with a construction height of 200 to 300 mm, preferably 300 mm.

[0009] In some optional embodiments, the structural reinforcement is formed by reversely raising the slope reinforcement.

[0010] In some optional embodiments, the structural steel bars are embedded in the slope.

[0011] In some optional embodiments, the exterior of the brickwork is plastered and sealed with cement mortar.

[0012] In some optional embodiments, a drainage pipe is further included. The drainage pipe is arranged on the masonry body at the pit at the top of the slope, and the drainage pipe extends out of the slope surface to discharge the water in the intercepting ditch at the pit at the top of the slope to the second intercepting ditch on the slope step or the confluence trough at the bottom of the slope.

[0013] In some optional embodiments, a rainwater well is further provided at the bottom of the slope, and the rainwater well is connected to the confluence trough.

[0014] The construction method of the cut-off ditch structure on the top of the excavated rock slope comprises the following steps:

[0015] Step S1, cleaning the top of the slope: remove unstable stones and foreign objects from the top of the slope, and roughly level the uneven areas. If the slope itself is unstable, it should be reinforced;

[0016] Step S2, spraying concrete surface layer on the top of the slope: first spray 8 cm thick concrete, then lay and fix tinned wire mesh, and finally spray concrete to a thickness of 12 cm. The spraying operation should be carried out from bottom to top, spraying 2 to 3 times according to the height. After the slurry initially sets, sprinkle water and cure for 7 to 10 days;

[0017] Step S3, measuring and setting out: Use a level to measure the specific position of the slope top, and use an ink fountain to draw the edge of the ditch to ensure it is horizontal and vertical;

[0018] Step S4, making structural reinforcement: using the steel bars on the slope sprayed anchor or using the slope side planting method to form the structural reinforcement of the intercepting ditch;

[0019] Step S5, brickwork: using mortar laying method, the mortar laying thickness is 30-50 mm, laying and laying at the same time, and the masonry height is 200-300 mm;

[0020] Step S6, filling the brickwork with concrete and plastering: after the masonry is completed, concrete is sprayed into the interior of the brickwork to fill the formed wall, and the exterior of the brickwork is plastered and sealed with 1:3 cement mortar;

[0021] Step S7, watering and curing: After the concrete has initially set, watering and curing are performed for 7 days.

[0022] Preferably, in step S2, a trial spraying should be carried out before spraying to adjust the water-cement ratio so that the aggregate is evenly distributed and the rebound is small; the galvanized iron wire is fixed to the end of the anchor rod on the slope surface.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The utility model adopts the method of constructing a brick masonry made of hollow bricks on the structural steel bars at the top of the slope, and spraying concrete into the brick masonry to connect the brick masonry and the structural steel bars into a whole to form a drainage ditch. The structure is simple and fast to construct, does not require manual excavation of trenches and construction of casting molds, and does not require large-scale mechanical equipment for construction. It has the advantages of low cost, low construction requirements on working surface width, and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0026] Figure 1 This is a cross-sectional view based on the excavation of the rock slope and the intercepting ditch on the top of the slope provided by the utility model;

[0027] Figure 2 yes Figure 1 A magnified partial view is provided.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1—Structural steel bars, 2—Slope steel bars, 3—Slope concrete surface layer, 4—Brickwork, 5—Drainage pipe. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; the terms "install", "connect", and "connect" 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, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0034] As attached Figure 1 and attached Figure 2 As shown, this embodiment provides a cut-off ditch structure based on the top of the excavated rock slope, including structural steel bars 1 and masonry. The structural steel bars 1 are arranged at the top of the slope at a set interval along the direction of the slope and perpendicular to the slope surface, and are connected to the slope surface steel bars 2 and anchored into the slope surface concrete layer 3; Specifically, in one embodiment, as shown in the attached figure, Figure 2 As shown, the structural reinforcement is formed by inverting the slope reinforcement. This design allows the structural reinforcement and slope reinforcement to be pre-buried as a whole within the slope concrete layer. In another embodiment, the structural reinforcement is a separate steel bar embedded in the slope rock layer. The masonry body includes brickwork 4 and sprayed concrete. The brickwork 4 is constructed of hollow bricks laid on the structural reinforcement. The brickwork is constructed using a mortar laying method to a height of 200-300mm, preferably 300mm. The sprayed concrete is filled into the hollow bricks, connecting the brickwork and structural reinforcement into a single unit to form a drainage ditch. Finally, the exterior of the brickwork is plastered and sealed with cement mortar.

[0035] This embodiment adopts the method of constructing a brick masonry made of hollow bricks on the structural steel bars at the top of the slope, and spraying concrete into the brick masonry to connect the brick masonry and the structural steel bars into a whole to form a drainage ditch. The construction of this structure is simple and fast, and does not require manual excavation of trenches and construction of casting molds, nor does it require large-scale mechanical equipment for construction. It has the advantages of low cost, low construction requirements on the working surface width, and strong adaptability.

[0036] Preferably, as attached Figure 2 As shown, it also includes a drainage pipe 5, which is arranged on the masonry body at the top pit, and the drainage pipe 5 extends out of the slope surface, and is used to discharge the water in the intercepting ditch at the top pit to the second intercepting ditch on the slope step or the confluence trough at the bottom of the slope (not shown in the figure). This design effectively prevents the problem of water accumulation in the top pit, and at the same time, the drainage pipe extends out of the slope surface, so that the discharged water will not scour the slope surface; the confluence trough at the bottom of the slope can collect the water discharged along the intercepting ditch. Preferably, a rainwater well (not shown in the figure) is also provided at the bottom of the slope, and the rainwater well is connected to the confluence trough, which can realize the connection of the collected water to the drainage system through the rainwater well for centralized treatment.

[0037] The construction method of the cut-off ditch structure on the top of the excavated rock slope comprises the following steps:

[0038] Step S1, cleaning the top of the slope: remove unstable stones and foreign objects from the top of the slope, and roughly level the uneven areas. If the slope itself is unstable, it should be reinforced;

[0039] Step S2, spraying concrete surface layer on the top of the slope: first spray 8 cm thick concrete, then lay and fix tinned wire mesh (galvanized wire is fixed to the end of the anchor rod 6 on the slope), and finally spray concrete to a thickness of 12 cm. This ensures that the thickness of the tinned wire mesh and the slope concrete surface layer is 4 cm. Before spraying, a test spraying should be carried out to adjust the water-cement ratio, make the aggregate evenly distributed, and reduce rebound. The spraying operation should be carried out from bottom to top, spraying 2 to 3 times according to the height. After the slurry initially sets, sprinkle water and cure for 7 to 10 days;

[0040] Step S3, measuring and setting out: Use a level to measure the specific position of the slope top, and use an ink fountain to draw the edge of the ditch to ensure it is horizontal and vertical;

[0041] Step S4, making structural reinforcement: using the steel bars on the slope sprayed anchor or using the slope side planting method to form the structural reinforcement of the intercepting ditch;

[0042] Step S5, brickwork: using mortar laying method, the mortar laying thickness is 30-50 mm, laying and laying at the same time, and the masonry height is 200-300 mm;

[0043] Step S6, filling the brickwork with concrete and plastering: after the masonry is completed, concrete is sprayed into the interior of the brickwork to fill the formed wall, and the exterior of the brickwork is plastered and sealed with 1:3 cement mortar;

[0044] Step S7, watering and curing: After the concrete has initially set, watering and curing are performed for 7 days.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A drainage ditch structure based on the top of an excavated rock slope, characterized by: It includes structural steel bars and masonry. The structural steel bars are arranged at the top of the slope at set intervals along the direction of the slope and perpendicular to the slope surface, and are connected to the slope surface steel bars and anchored into the concrete surface layer of the slope; the masonry includes brick masonry and sprayed concrete. The brick masonry is made of hollow bricks laid on the structural steel bars, and the sprayed concrete is filled in the hollow bricks to connect the brick masonry and the structural steel bars into a whole.

2. The cut-off ditch structure based on the top of the excavated rock slope according to claim 1 is characterized by: The brickwork is built by mortar laying method, and the building height is 200-300 mm.

3. The cut-off ditch structure based on the top of the excavated rock slope according to claim 1 is characterized by: The structural steel bars are formed by reversely inverting the slope steel bars.

4. The cut-off ditch structure based on the top of the excavated rock slope according to claim 1 is characterized by: The structural steel bars are embedded in the slope.

5. The cut-off ditch structure based on the top of the excavated rock slope according to claim 1 is characterized by: The exterior of the brickwork is plastered and sealed with cement mortar.

6. The cut-off ditch structure based on the top of the excavated rock slope according to claim 1 is characterized by: It also includes a drainage pipe, which is arranged on the masonry body at the top pit of the slope, and the drainage pipe extends out of the slope surface, and is used to discharge the water in the intercepting ditch at the top pit of the slope to the second intercepting ditch on the slope step or the confluence trough at the bottom of the slope.

7. The cut-off ditch structure based on the top of the excavated rock slope according to claim 6 is characterized by: A rainwater well is also provided at the bottom of the slope, and the rainwater well is connected to the confluence trough.

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