Slope anti-scouring structure

Abstract

The utility model provides a side slope anti-scour structure which comprises a transverse protection ditch, and the transverse protection ditch comprises a transverse main ditch, a plurality of side water guide ditches connected with the transverse main ditch and distributed at intervals, and a slope surface water guide ditch located on a slope surface and connected with the side water guide ditches; and the longitudinal protection slope comprises a protective layer. According to the side slope anti-scouring structure, double protection measures of the transverse protection ditch and the longitudinal protection slope are taken, construction is easy, the technology is reliable, scouring damage of rainwater to a weak side slope can be fundamentally reduced, the side slope collapse risk is reduced, the production safety of an open pit in the rainy season is improved, and the slope cutting and load shedding cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of open-pit mine slope protection, specifically relating to a slope erosion prevention structure. Background Technology

[0002] Some open-pit mine sites have distinct rainy and dry seasons throughout the year, with the rainy season lasting from May to October, during which it rains almost daily and heavy rains are frequent. The area contains numerous open-pit mines, which generally exhibit poor slope lithology and are characterized by a large amount of Quaternary soil, weathered dolomite, siltstone, and talc layers—weak rock and soil structures that are highly susceptible to erosion by rainwater, potentially leading to large gullies and landslides.

[0003] Current traditional slope protection methods mostly involve post-operative slope reduction and load mitigation, often requiring huge investments and posing significant threats to the safety of production operations. Furthermore, some domestic projects use masonry or shotcrete to protect ditches and slopes, but cement costs in countries like the Democratic Republic of Congo are far higher than in China, making it economically unreasonable. Moreover, similar construction on steep slopes presents significant challenges and risks. Simultaneously, traditional techniques have limited effectiveness in guiding water flow and protecting slopes, failing to fundamentally eliminate the risk of slope instability. For example, patent CN103061327B employs reverse slope and anti-seepage layer technology, but it primarily targets spoil heaps, and the anti-scouring capacity of the anti-seepage layer is limited. While patent CN101456789A can enhance slope stability to some extent, its construction is complex and costly. These limitations of traditional methods highlight the importance of innovative protection technologies. Summary of the Invention

[0004] This utility model aims to provide a slope erosion prevention structure, which fundamentally reduces the erosion damage of rainwater to weak slopes through a dual protection structure of "lateral ditch protection" and "longitudinal slope protection", reduces the risk of slope collapse, and improves the production safety of open-pit mines during the rainy season.

[0005] This utility model provides a slope erosion prevention structure, including:

[0006] A transverse drainage ditch, comprising a main transverse drainage ditch, multiple lateral drainage ditches connected to and spaced apart from the main transverse drainage ditch, and a slope drainage ditch located on the slope and connected to the lateral drainage ditches; and

[0007] Longitudinal slope protection, wherein the longitudinal slope protection includes a protective layer.

[0008] In one embodiment, the protective layer is a multilayer material layer.

[0009] In one embodiment, the protective layer is a two-layer material layer.

[0010] In one embodiment, the width of the transverse main drainage ditch is 0.3-0.8 m, the depth is 0.3-0.8 m, and the slope is 0.1%-0.5%.

[0011] In one embodiment, the width of the lateral drainage ditch is 0.5-1.0 m, the depth is 0.5-1.0 m, and the slope is 0.2%-0.8%.

[0012] In one embodiment, the width of the slope drainage ditch is 0.5-1.2 m and the depth is 0.2-0.5 m.

[0013] In one embodiment, the protective layer includes a first protective layer and a second protective layer covering the first protective layer.

[0014] In one embodiment, the first protective layer is a waterproof tarpaulin layer, and the second protective layer is a geotextile layer.

[0015] In one embodiment, the area covered by the second protective layer is greater than the area covered by the first protective layer.

[0016] In one embodiment, the first protective layer and the second protective layer are fixed by fixing nails.

[0017] This utility model provides a slope erosion prevention structure, namely a dual protection measure of "transverse ditch protection" and "longitudinal slope protection". It is simple to construct and reliable in process. It can fundamentally reduce the erosion damage of rainwater to weak slopes, reduce the risk of slope collapse, improve the production safety of open pits during the rainy season, and save on slope cutting and load reduction costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the slope erosion prevention structure of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] like Figure 1 As shown, a slope erosion control structure includes: a transverse ditch, comprising a main transverse ditch 1, a plurality of lateral guide ditches 2 connected to and spaced apart from the main transverse ditch 1, and a slope guide ditch 3 located on the slope and connected to the lateral guide ditches 2; and a longitudinal slope protection, comprising a protective layer. The protective layer can be a multi-layered material layer. In one embodiment, the protective layer can be a double-layered material layer, comprising a first protective layer and a second protective layer covering the first protective layer. The first protective layer can be a waterproof tarpaulin layer, and the second protective layer can be a geotextile layer. The laying area of ​​the second protective layer is slightly larger than that of the first protective layer. The first and second protective layers are fixed by fixing devices such as fixing nails.

[0027] The transverse main drainage ditch 1 has a width of 0.3-0.8 m, a depth of 0.3-0.8 m, and a slope of 0.1%-0.5%. The lateral guide drainage ditch 2 has a width of 0.5-1.0 m, a depth of 0.5-1.0 m, and a slope of 0.2%-0.8%. The sloping guide drainage ditch 3 has a width of 0.5-1.2 m and a depth of 0.2-0.5 m.

[0028] The embodiments of this utility model are described in detail below through examples.

[0029] Example 1

[0030] This embodiment relates to the implementation of transverse ditch protection technology.

[0031] like Figure 1 As shown, a transverse main water ditch 1 is excavated on the platform at a distance of 0.5m-2m from the toe of the slope. The ditch is 0.3-0.8m wide, 0.3-0.8m deep, and has a slope of 0.1%-0.5%.

[0032] At regular intervals, lateral guide ditches 2 are constructed at the lower points of the main transverse ditch 1. These ditches are 0.5-1.0 m wide, 0.5-1.0 m deep, and have a slope of 0.2%-0.8%, directing the collected water towards the top of the slope. On the lower slope, a slope guide ditch 3, connected to the lateral guide ditches 2, is excavated. This ditch is 0.5-1.2 m wide, 0.2-0.5 m deep, and has the same slope angle as the step at that location. This guide ditch systematically directs the collected water into the main transverse ditch 1 and the lateral guide ditches 2, ultimately converging into a collection pool at the bottom of the pit.

[0033] The walls of the aforementioned transverse main drainage ditch 1, lateral drainage ditch 2, and slope drainage ditch 3 are all laid with HDPE film of 1 mm-2 mm specifications, and fixed with fixing nails every 1-2 m.

[0034] Rectangular drainage ditches are preferred for ease of mechanical construction. Trapezoidal or triangular shapes may also be used in special circumstances.

[0035] Example 2

[0036] This embodiment relates to the implementation of longitudinal slope protection technology.

[0037] The slope surface should be simply cleaned to ensure there are no sharp objects. The first protective layer (4) should be a waterproof polyethylene or polyvinyl chloride tarpaulin, and the second protective layer (5) should be a high-strength filament or woven geotextile. Ensure the material is wrinkle-free and conforms to the slope surface, and secure it with anchoring nails to guarantee stability.

[0038] To facilitate manual construction on the slope, the first protective layer 4 uses 80-300 g / m³ material. 2 For thin or medium thickness types, the second protective layer 5 should be selected with a strength of 100-400 g / m². 2 Light or medium-sized.

[0039] The area covered by the second protective layer 5 should be slightly larger than that covered by the first protective layer 4 to ensure that its edges are protected.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slope erosion prevention structure, characterized in that, include: A transverse drainage ditch, comprising a main transverse drainage ditch, multiple lateral drainage ditches connected to and spaced apart from the main transverse drainage ditch, and a slope drainage ditch located on the slope and connected to the lateral drainage ditches; and Longitudinal slope protection, wherein the longitudinal slope protection includes a protective layer.

2. The slope erosion prevention structure according to claim 1, characterized in that, The protective layer is composed of multiple material layers.

3. The slope erosion prevention structure according to claim 2, characterized in that, The protective layer is a double-layer material layer.

4. The slope erosion prevention structure according to claim 3, characterized in that, The width of the transverse main water ditch is 0.3-0.8 m, the depth is 0.3-0.8 m, and the slope is 0.1%-0.5%.

5. The slope erosion prevention structure according to claim 4, characterized in that, The lateral drainage ditch has a width of 0.5-1.0 m, a depth of 0.5-1.0 m, and a slope of 0.2%-0.8%.

6. The slope erosion prevention structure according to claim 5, characterized in that, The width of the slope drainage ditch is 0.5-1.2 m and the depth is 0.2-0.5 m.

7. The slope erosion prevention structure according to any one of claims 3-6, characterized in that, The protective layer includes a first protective layer and a second protective layer covering the first protective layer.

8. The slope erosion prevention structure according to claim 7, characterized in that, The first protective layer is a waterproof tarpaulin layer, and the second protective layer is a geotextile layer.

9. The slope erosion prevention structure according to claim 8, characterized in that, The area covered by the second protective layer is larger than that covered by the first protective layer.

10. The slope erosion prevention structure according to claim 9, characterized in that, The first protective layer and the second protective layer are fixed by fixing nails.

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