Anti-scour construction process and structure for channel slope protection

Abstract

The invention provides a channel slope protection anti-scouring construction technology and structure, and belongs to the technical field of water conservancy projects. The anti-scour construction technology for the channel slope protection comprises the following steps that firstly, geotechnical cloth is laid on a slope surface; when soil is contained in the geotechnical bags, the geotechnical bags are knotted after being filled with half bags of soil, the geotechnical bags are laid on the geotechnical cloth row by row in the direction of the cross section of the diversion channel, the bag openings of the geotechnical bags face the upstream direction, and the two corners of the bag bottoms of the geotechnical bags are pressed on the two adjacent geotechnical bags in the next row respectively to form fish scale-shaped arrangement. A constructor inserts the two inserting rods of the U-shaped clamp into one corner of the adjacent bag bottom of the adjacent geotechnical bags, penetrates through the next row of geotechnical bags pressed by the corner, penetrates through the geotechnical cloth and is inserted into the soil body of the slope surface. When water flows through, the geotechnical bags in the front row protect the geotechnical bags in the rear row, the anchoring performance of the geotechnical bags can be improved through the U-shaped clamps, the geotechnical bags are prevented from being washed away by water, and therefore the resistance to running water erosion is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy projects, and more specifically, relates to a construction process and structure for preventing scouring of channel slopes Background Art

[0002] A diversion channel is a common structure in water conservancy projects, and its main function is to temporarily guide the flow of water. In some areas with large water volumes, due to the scouring effect of the water flow and overly soft soil, when directly excavating a ditch as a diversion channel, it is difficult for the slope protection of the diversion channel to resist the erosion of the water flow, and deformation and collapse are likely to occur; and as a temporary structure, it is relatively wasteful to reinforce the slope protection using masonry structures or concrete structures; therefore, in the prior art, geotextile bags are often used to reinforce the slope protection of the diversion channel, that is, a layer of geotextile bags filled with soil is stacked on the slope protection of the diversion channel to resist the scouring of the water flow.

[0003] However, this method is still difficult to resist the scouring of the water flow during the rainy season when the water level rises sharply and at the turning points of the diversion channel. Once the geotextile bags in one part are washed away, the flowing water will quickly erode the slope protection, hollow out the surrounding soil mass, and cause damage to the slope protection in a relatively large area. Summary of the Invention

[0004] The purpose of the present invention is to provide a construction process and structure for preventing scouring of channel slopes, so as to solve the technical problem in the prior art that the current method of using geotextile bags to reinforce the slope protection of the diversion channel is still difficult to resist the scouring of the water flow during the rainy season when the water level rises sharply and at the turning points of the diversion channel.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: In the first aspect, the present invention provides a construction process for preventing scouring of channel slopes, including the following steps: S100. Slope setting: Excavate the slope surface of the slope protection according to the designed slope and level and compact it.

[0006] S200. Laying geotextile: Lay a layer of geotextile on the slope surface, and the adjacent geotextiles are overlapped or connected together.

[0007] S300. Scaly laying of geotextile bags: After filling the geotextile bags with half a bag of soil and tying a knot, lay the geotextile bags row by row on the geotextile along the cross-section direction of the diversion channel, and the mouth of each geotextile bag faces upstream, and the two corners of the bottom of the bag are respectively pressed on the two adjacent geotextile bags in the back row, forming a fish-scale arrangement.

[0008] S400. Flattening the geotextile bags: Use a rolling device to roll and flatten the laid geotextile bags.

[0009] Fix with S500 and U-shaped cards. The U-shaped card includes a connecting part and two insertion rods. One end of each of the two insertion rods is provided with a pointed head, and the other end is fixedly connected to the connecting part. Insert the two insertion rods of the U-shaped card into the adjacent corners of the bottom of adjacent geotextile bags respectively, pass through the geotextile bags in the row behind the corner being pressed, and pass through the geotextile, and insert them into the soil body of the slope. Moreover, one U-shaped card is inserted at each of the two bottom corners of the geotextile bag, so that the geotextile bags arranged in a fish-scale shape form a net-like connection.

[0010] Combined with the above technical solution, in a possible implementation manner, the relationship between the length h of the insertion rod and the maximum designed flow velocity v of the diversion channel is h = kv, where k is a constant determined by calculation or experiment.

[0011] Combined with the above technical solution, in a possible implementation manner, the insertion rod of the U-shaped card is a hollow tubular structure, and the construction process for preventing erosion of the channel slope protection also includes the following steps: S600, Grouting consolidation. Grout into the soil body of the slope through the insertion rod to form a grouting consolidation body and improve the anchoring performance of the U-shaped card.

[0012] Combined with the above technical solution, in a possible implementation manner, the insertion rod of the U-shaped card is a hollow tubular structure, and the construction process for preventing erosion of the channel slope protection also includes the following steps: S700, Elastic bar anchoring. Insert an elastic bar longer than the insertion rod into the insertion rod. The elastic bar is an elastic insertion bar structure and is bent in a natural state. The front end is provided with reverse teeth, and the rear end is provided with a chuck for clamping outside the insertion rod.

[0013] Combined with the above technical solution, in a possible implementation manner, the U-shaped card further includes a retaining disc. The retaining disc is a bowl-shaped structure and is sleeved on the insertion rod.

[0014] Combined with the above technical solution, in a possible implementation manner, Both the geotextile and the geotextile bag are made of plastic woven materials, and the geotextile bag is a double-layer structure.

[0015] In S200, after laying the geotextile, sprinkle iron powder on the geotextile.

[0016] In S400, after flattening the geotextile bag, heat the iron powder on the geotextile bag by using a thermocouple device, so that the geotextile and the geotextile bag are partially welded together.

[0017] The beneficial effect of the construction process for preventing erosion of the channel slope protection provided by the present invention is that: compared with the prior art, the present invention fixes the geotextile bags arranged in a fish-scale shape through U-shaped cards to form a flat net-like structure. When water flows through, the front-row geotextile bags protect the rear-row geotextile bags, and the U-shaped card can improve the anchoring performance of the geotextile bags, avoid the geotextile bags from being washed away by water, thereby enhancing the resistance to water erosion. Moreover, the construction is convenient and the construction cost is relatively low.

[0018] In a second aspect, the present invention provides an anti-erosion structure for channel slope protection, which includes a plurality of geotextile bags, geotextiles and a plurality of U-shaped clips. The geotextile bags are used to contain soil. The geotextiles are laid between the slope surface and the geotextile bags. The U-shaped clip includes a connecting portion and two inserting rods. The two inserting rods are arranged in parallel at both ends of the connecting portion. One end of each inserting rod is provided with a pointed head, and the other end of the inserting rod is fixedly connected to the connecting portion.

[0019] Wherein, the two inserting rods are respectively inserted into adjacent corners at the bottom of adjacent geotextile bags, pass through the geotextile bags in the row behind the corners being pressed, pass through the geotextiles, and are inserted into the soil of the slope surface.

[0020] The beneficial effects of the anti-erosion structure for channel slope protection provided by the present invention are as follows: Compared with the prior art, the slope protection structure includes geotextiles, a plurality of geotextile bags and a plurality of U-shaped clips. First, the geotextiles are laid on the slope surface. When the geotextile bags contain soil, after filling the geotextile bags with half a bag of soil and tying a knot, the geotextile bags are laid row by row on the geotextiles in the direction of the cross-section of the diversion channel, and the mouth of each geotextile bag faces the upstream direction. The two corners at the bottom of the bag are respectively pressed on two adjacent geotextile bags in the row behind, forming a fish-scale arrangement.

[0021] Construction workers respectively insert the two inserting rods of the U-shaped clip into adjacent corners at the bottom of adjacent geotextile bags, pass through the geotextile bags in the row behind the corners being pressed, pass through the geotextiles, and insert them into the soil of the slope surface. And one U-shaped clip is inserted at each of the two corners at the bottom of the geotextile bag, so that the fish-scale arranged geotextile bags form a mesh connection structure. When water flows through, the front-row geotextile bags protect the rear-row geotextile bags, and the U-shaped clips can improve the anchoring property of the geotextile bags, prevent the geotextile bags from being washed away by water, thereby enhancing the resistance to water erosion. Moreover, the construction is convenient and the construction cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic flow chart of the construction process for anti-erosion of channel slope protection provided by an embodiment of the present invention; Figure 2 It is an installation schematic diagram of the anti-erosion structure for channel slope protection provided by an embodiment of the present invention; Figure 3 It is an installation schematic diagram of the U-shaped clip and the geotextile bag in the anti-erosion structure for channel slope protection provided by an embodiment of the present invention.

[0024] Among them, the reference numerals in the figures are as follows: 10, slope surface; 30, geotextile bag; 40, U-shaped clamp; 41, inserting rod; 42, connecting part; 43, retaining disc; 50, grouting consolidation body; 60, elastic bar. Specific implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0026] It should be further noted that the drawings and embodiments of the present invention mainly describe and illustrate the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems, etc. may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above specific forms and settings in a well-known manner.

[0027] When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] The orientation terms "inside" and "outside" refer to the inside and outside of the contour of each component itself. The terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0029] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used here to describe the spatial positional relationship between a device or feature shown in a figure and other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the attached drawing is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, and corresponding interpretations are made for the spatial relative descriptions used here.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0031] The channel slope protection and anti-erosion construction process and structure provided by the present invention will now be described.

[0032] In a first aspect, as Figure 1 shown, the channel slope protection and anti-erosion construction process provided by the present invention includes the following steps: S100. Slope setting: Excavate the slope surface 10 of the slope protection according to the designed slope and level and compact it.

[0033] S200. Laying geotextile: Lay a layer of geotextile on the slope surface 10, and the adjacent geotextiles are overlapped or connected together.

[0034] S300. Scaly laying of geotextile bags 30: After filling the geotextile bag 30 with half a bag of soil and tying a knot, lay the geotextile bags 30 row by row in the cross-sectional direction of the diversion channel on the geotextile, and the mouth of each geotextile bag 30 faces upstream, and the two corners of the bottom of the bag are respectively pressed on the two adjacent geotextile bags 30 in the back row, forming a fish-scale arrangement.

[0035] S400. Flattening the geotextile bags 30: Use a rolling device to roll and flatten the laid geotextile bags 30.

[0036] S500. Fixing with U-shaped clamps 40: The U-shaped clamp 40 includes a connecting portion 42 and two inserting rods 41. One end of each of the two inserting rods 41 is provided with a pointed head, and the other end is fixedly connected to the connecting portion 42.

[0037] The two insertion rods 41 of the U-shaped card 40 are respectively inserted into the adjacent corners of the bottom of the adjacent geobags 30, and pass through the corner to press the geobag 30 in the next row, and pass through the geotextile to be inserted into the soil of the slope 10, and a U-shaped card 40 is inserted at the two corners of the bottom of the geobag 30, so that the geobags 30 arranged in a fish scale shape form a mesh connection.

[0038] Compared with the prior art, the channel slope protection and anti-scour construction process provided in this embodiment fixes the geobags 30 arranged in a fish-scale shape through U-shaped clips 40 to form a flat mesh structure. When water flows through, the geobags 30 in the front row protect the geobags 30 in the rear row, and the U-shaped clips 40 can enhance the anchoring of the geobags 30 to prevent the geobags 30 from being washed away by water, thereby enhancing the resistance to water erosion. In addition, the construction is convenient and the construction cost is relatively low.

[0039] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above embodiment as follows: The relationship between the length h of the insertion rod 41 and the maximum design flow velocity v of the diversion channel is h=kv, wherein k is a constant determined by calculation or experiment.

[0040] one, k Theoretical calculation logic of value Mechanical equilibrium model The length of the rod 41 must meet the anchoring requirements of the geobag 30 to resist the force of water flow. The key is to balance the drag force of water flow on the geobag 30 and the anchoring force of the rod 41 in the soil: Water drag: Fd =21 Cdρv 2 A ,in Cd is the drag coefficient (related to the shape of the geobag 30 and the flow pattern of the water), ρ is the density of water, A It is the water-facing area of geobag 30.

[0041] Rod anchoring force: ,in μ is the friction coefficient between the rod 41 and the soil, γ is the soil bulk density, L is the circumference of the insertion rod 41 (related to the diameter of the insertion rod 41).

[0042] when Fa ≥ Fd When , the combined simplification can be obtained h ∝ v 2. However, in actual engineering, in order to simplify calculations, the relationship is often approximated as a linear h = kv ,at this time kIt can be regarded as a comprehensive constant including the drag coefficient, soil parameters, safety factor, etc.

[0043] II. Influences k Key parameters affecting the

[0044] Note: During the construction of the diversion canal in Xianxian County, the soil parameters, the water-facing area of the geotextile bag 30, the density of water, the unit weight of the soil, and the friction coefficient between the insertion rod 41 and the soil are all determined values (i.e., fixed values).

[0045] III. Refer to the empirical values of the anchoring structure in the "Slope Design Code for Water Conservancy and Hydropower Projects": For sandy soil slopes: When the flow velocity v = 1 - 3 m / s, k It is usually between 0.2 and 0.5 (unit: m*s / m); For clay slopes: Due to the large soil friction, k It can be reduced to 0.1 - 0.3.

[0046] Since the slope protection in the Xianxian County diversion canal project is a clay slope, therefore k The range of 0.1 - 0.3 is adopted. During the actual construction process, considering safety redundancy, therefore k The value of is adopted as 0.1.

[0047] In a specific embodiment, the insertion rod 41 of the U-shaped clip 40 is a hollow tubular structure, and the construction technology for preventing erosion of the channel slope protection further includes the following steps: S600. Grouting consolidation: Inject grout into the soil body of the slope surface 10 through the insertion rod 41 to form a grouting consolidation body 50 and improve the anchoring performance of the U-shaped clip 40.

[0048] During the actual grouting process, due to different requirements for grouting in different soil types, the following are some parameter controls during the grouting construction: I. Grouting construction control parameters 1. Grouting sequence For the slope from bottom to top: First inject the downstream holes, and then inject the upstream holes to prevent the grout from being washed by water (for example, when grouting the river channel slope protection, it is constructed row by row from the slope toe to the slope top).

[0049] Interval and skip holes: The interval between adjacent hole grouting ≥ 24 h to avoid grout intermixing (when arranged in a plum blossom shape, first inject the odd-numbered holes, and then inject the even-numbered holes).

[0050] 2. Termination criteria Pressure control: When the grouting pressure reaches the design value and is maintained for 10 min, and the grout absorption volume < 1 L / min, it can be terminated.

[0051] Grouting volume control: When the grouting volume of a single hole reaches more than 1.5 times the theoretical value and there is no obvious increase in pressure, it is necessary to check whether there is slurry leakage (which can be blocked with quick-setting slurry).

[0052] II. Parameter adjustment under special geological conditions

[0053] III. Grouting quality inspection parameters Compressive strength: The 28-day compressive strength of the grouted body ≥ 15 MPa (for reinforcement) or ≥ 10 MPa (for anti-seepage), and the qualified rate of core sampling inspection ≥ 85%.

[0054] Permeability coefficient: The permeability coefficient of the soil body after anti-seepage grouting ≤ 1×10 -7 cm / s, detected by the water pressure test (the water leakage volume < 5 L / min at a pressure of 0.3 MPa).

[0055] Slope displacement: The horizontal displacement of the slope after grouting ≤ 5 mm / month, and the vertical displacement ≤ 3 mm / month (monitored by total station).

[0056] In another specific embodiment, the insertion rod 41 of the U-shaped clip 40 is a hollow tubular structure, and the construction technology for preventing erosion of the channel slope protection also includes the following steps: S700. Anchoring of the elastic bars 60: Insert the elastic bars 60 longer than the insertion rod 41 into the insertion rod 41. The elastic bars 60 are elastic insertion bar structures and are bent in the natural state, with barbs at the front end and a chuck at the rear end for clamping outside the insertion rod 41.

[0057] In actual use, S600 or S700 can be used alone according to requirements, or S600 and S700 can be used simultaneously.

[0058] Specifically, the length of the elastic bar 60 is 20 cm - 40 cm.

[0059] The U-shaped clip 40 further includes a retaining disc 43. The retaining disc 43 is in a bowl shape and is sleeved on the insertion rod 41 to buckle on the geotextile bag 30 to prevent the part of the geotextile bag 30 where it is punctured from leaking soil under the scouring of water flow.

[0060] Both the geotextile and the geotextile bag 30 are made of plastic woven materials, and the geotextile bag 30 is a double-layer structure.

[0061] In S200, after laying the geotextile, sprinkle iron powder on the geotextile.

[0062] In S400, after flattening the geotextile bag 30, heat the iron powder on the geotextile bag 30 by using a thermocouple device to make the geotextile and the geotextile bag 30 partially welded together.

[0063] In the second aspect, please refer to Figure 2 andFigure 3 The present invention also provides an anti - erosion structure for channel slope protection. The anti - erosion structure for channel slope protection includes a geotextile, a plurality of geobags 30, and a plurality of U - shaped clips 40. The plurality of geobags 30 are used to contain soil. The geotextile is laid between the slope surface 10 and the geobags 30.

[0064] The plurality of U - shaped clips 40 include a connecting portion 42 and two insertion rods 41. The two insertion rods 41 are arranged in parallel at both ends of the connecting portion 42. One end of the insertion rod 41 is provided with a pointed head, and the other end of the insertion rod 41 is fixedly connected to the connecting portion 42.

[0065] Wherein, the two insertion rods 41 are respectively inserted into adjacent corners of the bottom of adjacent geobags 30, pass through the geobags 30 of the row behind the corner being pressed, pass through the geotextile, and are inserted into the soil body of the slope surface 10.

[0066] Combined Figure 2 and Figure 3 As shown, first of all, the geotextile is laid on the slope surface 10. When the geobags 30 contain soil, after filling half a bag of soil in the geobags 30 and tying a knot, the geobags 30 are laid row by row on the geotextile in the direction of the cross - section of the diversion channel, and the mouth of each geobag 30 faces upstream. The two corners of the bottom of the bag are respectively pressed on two adjacent geobags 30 of the row behind, forming a fish - scale arrangement.

[0067] Secondly, the geobags 30 are fixed on the slope surface 10 through the U - shaped clips 40. The construction workers respectively insert the two insertion rods 41 of the U - shaped clip 40 into adjacent corners of the bottom of adjacent geobags 30, pass through the geobags 30 of the row behind the corner being pressed, pass through the geotextile, and are inserted into the soil body of the slope surface 10. And one U - shaped clip 40 is inserted at each of the two corners of the bottom of the geobag 30, so that the fish - scale - arranged geobags 30 form a net - like connection structure.

[0068] Compared with the prior art, the present invention fixes the fish - scale - arranged geobags 30 through the U - shaped clips 40 to form a flat net - like structure. When water flows through, the front - row geobags 30 protect the rear - row geobags 30, and the U - shaped clips 40 can improve the anchoring property of the geobags 30, prevent the geobags 30 from being washed away by water, thereby enhancing the resistance to water erosion. Moreover, the construction is convenient and the construction cost is relatively low.

[0069] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A construction process for preventing erosion of channel slopes, characterized in that, It includes the following steps: S100. Slope cutting: Excavate the slope surface of the slope protection according to the designed slope and level and compact it; S200. Laying geotextile: Lay a layer of geotextile on the slope surface, and the adjacent geotextiles are overlapped or connected together; S300. Scaly laying of geotextile bags: After filling the geotextile bags with half a bag of soil and tying them, lay the geotextile bags row by row on the geotextile in the direction of the cross-section of the diversion channel, and the mouth of each geotextile bag faces upstream, and the two corners of the bottom of the bag are respectively pressed on the two adjacent geotextile bags in the back row to form a fish-scale arrangement; S400. Flattening the geotextile bags: Use rolling equipment to roll and flatten the laid geotextile bags; S500. Fixing with U-shaped clamps: The U-shaped clamps include a connecting part and two inserting rods. One end of each of the two inserting rods is provided with a pointed head, and the other end of the inserting rod is fixedly connected to the connecting part; Insert the two inserting rods of the U-shaped clamp into the adjacent corner of the bottom of the adjacent geotextile bags respectively, pass through the geotextile bag in the back row pressed by this corner, and pass through the geotextile, and insert into the soil body of the slope surface, and one U-shaped clamp is inserted at each of the two corners of the bottom of the geotextile bag, so that the fish-scale arranged geotextile bags form a mesh connection.

2. The anti-erosion construction process for channel slope protection as described in claim 1, characterized in that, The relationship between the length h of the inserting rod and the maximum designed flow velocity v of the diversion channel is h = kv, where k is a constant determined by calculation or test.

3. The channel slope protection and erosion prevention construction process according to claim 1, characterized in that, The inserting rod of the U-shaped clamp is a hollow tubular structure, and the construction technology for preventing erosion of the channel slope protection also includes the following steps: S600. Grouting consolidation: Grout into the soil body of the slope surface through the inserting rod to form a grouting consolidation body and improve the anchoring property of the U-shaped clamp.

4. The channel slope protection and erosion prevention construction process according to claim 1, characterized in that, The inserting rod of the U-shaped clamp is a hollow tubular structure, and the construction technology for preventing erosion of the channel slope protection also includes the following steps: S700. Elastic bar anchoring: Insert an elastic bar longer than the inserting rod into the inserting rod; wherein, the elastic bar is an elastic inserting bar structure and is bent in the natural state, and the front end of the elastic bar is provided with reverse teeth and the rear end is provided with a chuck for clamping outside the inserting rod.

5. The anti-erosion construction process for the channel slope protection according to claim 1, characterized in that: The U-shaped clamp further includes a retaining plate, and the retaining plate is a bowl-shaped structure and is sleeved on the inserting rod.

6. The construction technology for preventing erosion of the channel slope protection according to claim 1, wherein: Both the geotextile and the geotextile bag are made of plastic woven materials, and the geotextile bag is a double-layer structure; In S200, after laying the geotextile, sprinkle iron powder on the geotextile; In S400, after flattening the geotextile bag, heat the iron powder on the geotextile bag by using a thermocouple device, so that the geotextile and the geotextile bag are partially welded together.

7. A channel slope protection and anti-erosion structure, characterized in that, It includes: Multiple geotextile bags for containing soil; Geotextile laid between the slope surface and the geotextile bags; Multiple U-shaped clamps, including a connecting part and two inserting rods, the two inserting rods are arranged in parallel at both ends of the connecting part, one end of the inserting rod is provided with a pointed head, and the other end of the inserting rod is fixedly connected to the connecting part; Wherein, the two inserting rods are respectively inserted into the adjacent corner of the bottom of the adjacent geotextile bags, pass through the geotextile bag in the back row pressed by this corner, and pass through the geotextile, and insert into the soil body of the slope surface.

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