Earth and rockfill dam type armor type inverted filtering anti-scour reinforcing system

Abstract

The invention discloses an earth and rockfill dam armor type inverted filter anti-scour reinforcing system, which belongs to the technical field of flood prevention and emergency rescue, and comprises an inner-layer wing-connected geotechnical bag reinforcing body, the inner-layer wing-connected geotechnical bag reinforcing body comprises a plurality of first single geotechnical bags laid on the dam top and the downstream slope surface of a dam earth and rockfill dam, and a plurality of second single geotechnical bags laid on the dam top and the downstream slope surface of the dam earth and rockfill dam. A plurality of layers of first single soilbags are laid in a staggered mode, a winged edge is laid below every two adjacent first single soilbags which are located on the same layer and located on the same column, and each winged edge is fixedly connected with one first single soilbag; the surface layer series-connection type geobag anti-impact body comprises a plurality of second single geobag bodies which are stacked in a staggered mode and attached to the outer side of the inner layer wing-connection type geobag reinforcing body in an extruded mode, and the second single geobag bodies located in the same row are connected through ropes. The novel earth-rockfill dam flood prevention measure is provided, the dam break risk of the earth-rockfill dam under the over-standard flood is reduced, the effect that the earth-rockfill dam overflows but does not break is achieved, and the life and property safety of people is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of flood prevention and emergency rescue, and in particular to an armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams. Background Art

[0002] Against the backdrop of global climate change, extreme climate events have led to frequent, high-incidence and recurrence of floods beyond the standard.

[0003] An earth-rock dam is a water-retaining structure built by layered compaction and other construction methods using local soil, stone or a mixture of soil and stone. It is a basic engineering facility for water storage and flood control. As the most commonly used dam type in my country, the safety of earth-rock dams has always been a focus of water conservancy projects. According to statistics on dam breach cases at home and abroad, earth-rock dam breaches account for more than 90% of all dam breaches. In these dam breaches, flooding is the main cause of dam breaches.

[0004] In fact, from the perspective of design and operation, earth-rock dams are not allowed to overflow, otherwise dam breaches are very likely to occur. In order to cope with the risk of earth-rock dam breaches caused by super-standard floods and achieve the effect of "flooding without breaching" for earth-rock dams, it is particularly urgent and necessary to propose an economical and effective dam flood control and flood prevention technology.

[0005] Therefore, an armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams is proposed. Summary of the invention

[0006] The object of the present invention is to provide an armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams, aiming to solve or improve at least one of the above-mentioned technical problems.

[0007] To achieve the above object, the present invention provides the following solution: The present invention provides an armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams, comprising:

[0008] An inner wing-connected geobag reinforcement body, the inner wing-connected geobag reinforcement body comprising a plurality of first single geobags laid on the dam top and backwater slope of the earth-rock dam, the plurality of first single geobags being staggered and laid in multiple layers, a wing edge being laid below two adjacent first single geobags in the same layer and in the same column, the wing edge being fixedly connected to one of the first single geobags;

[0009] The surface layer tandem geobag anti-impact body comprises a plurality of second single geobags which are offset, stacked, extruded and attached to the outer side of the inner layer wing-linked geobag reinforcement body, and the plurality of second single geobags in the same row are connected by ropes.

[0010] Optionally, two adjacent first-unit geobags are arranged alternately in the front-to-back direction and the left-to-right direction; two adjacent first-unit geobags located on the same layer but in adjacent rows are arranged alternately in the left-to-right direction;

[0011] Two adjacent second-unit geobags in adjacent rows are staggered in the left-right direction, and the second-unit geobags and the adjacent first-unit geobags are staggered in the front-to-back direction and the left-to-right direction.

[0012] Optionally, the first single geobag is filled with conventional fillers obtained from local materials, thereby forming a conventional geobag. The wings are respectively fixed on two opposite sides of the bottom of the conventional geobag to form a double-wing geobag. The double-wing geobag is located between two adjacent conventional geobags in the same row, and the conventional geobag is pressed above the wing.

[0013] Optionally, the second single geobag is filled with conventional fillers obtained from local materials, and two buckles are fixed to the top of the second single geobag along the length direction of the bag body. Several second single geobags in the same row and several buckles at the same position are passed through the rope, and both ends of the rope are tied to the buckles at the end.

[0014] Optionally, the material filled in part of the first single geobag and part of the second single geobag is replaced by a permeable filler from a conventional filler, and the first single geobag and the second single geobag filled with the permeable filler are respectively formed into a permeable prism geobag, and a plurality of connected permeable prism geobags form a permeable module;

[0015] The permeable modules are arranged in a plurality along the height direction and the horizontal direction of the earth-rock dam. When viewed from the side of the earth-rock dam, the permeable modules cross the inner wing-connected geobag reinforcement body and the surface series-connected geobag anti-scouring body. The plurality of permeable prism geobags in the permeable modules are staggered in a stepped manner, and the high end of the permeable modules is located on the back slope.

[0016] Optionally, viewed from the front of the earth-rock dam, a plurality of the permeable modules are distributed in a continuous isosceles triangle-like plum blossom pile pattern.

[0017] Optionally, the arrangement of the permeable prism geobags is associated with the infiltration line, being dense below the infiltration line and sparse above the infiltration line.

[0018] Optionally, a layer of one-way permeable geomembrane is arranged below the infiltration line of the backwater slope, and the one-way permeable geomembrane allows water on the backwater slope side to flow out through the one-way permeable geomembrane.

[0019] Optionally, the outer surface contour of the surface tandem geobag anti-scour body is designed with a bionic streamlined curve.

[0020] The present invention discloses the following technical effects:

[0021] 1. The inner wing-linked geobag reinforcement body is laid on the dam crest and backwater slope of the earth-rock dam, and the surface tandem geobag anti-scour body is stacked and extruded on the outside of the inner wing-linked geobag reinforcement body; thus, the soil particles inside the dam body can be effectively blocked from migrating downstream, thereby reducing the loss of soil particles in the dam body;

[0022] 2. When laying the inner wing-linked geobag reinforcement body, the first geobag is pressed on the wing edge of the adjacent first geobag in the same row to strengthen the connection; when laying the surface series-type geobag anti-scour body, the connection of the second geobag is strengthened by ropes, reducing the risk of dam collapse under super-standard floods, achieving the effect of "flooding but not collapsing" of the earth-rock dam, and effectively ensuring the safety of people's lives and property.

[0023] 3. Compared with concrete protection and other technologies, the use of geobags in long-distance linear projects such as earth-rock dams can greatly exert their economic advantages and significantly reduce the reinforcement cost of earth-rock dams.

[0024] 4. Only the second unit geobag located on the outside is connected by a rope structure, and the adjacent first unit geobags located in the inner layer are connected by a wing edge structure. It is not necessary to use ropes to connect each layer. The construction is convenient and quick, reducing the construction complexity and improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 is an axonometric view of the present invention;

[0027] Figure 2 It is a left side view of the present invention;

[0028] Figure 3 It is a front view of the present invention;

[0029] Figure 4 It is a schematic diagram of the production of conventional geobags, double-wing geobags and inner-wing-connected geobags with solid screens in the present invention;

[0030] Figure 5 It is a schematic diagram of manufacturing the surface layer series-type geobag anti-scour body in the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the permeable prismatic geobag in the present invention.

[0032] In the figure: 1. crest of earth-rock dam; 2. back slope; 3. conventional geobag; 4. permeable prism geobag; 5. bionic streamline; 6. slope foot; 7. buckle; 8. rope; 9. surface series geobag anti-scour body; 10. double-wing geobag; 11. wing edge; 12. inner wing-connected geobag reinforcement body; 13. permeable module. DETAILED DESCRIPTION

[0033] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 1-Figure 5 The present invention provides an armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams, comprising:

[0036] The inner wing-connected geobag reinforcement body 12 includes a plurality of first single geobags laid on the dam crest 1 and the backwater slope 2 of the earth-rock dam. The plurality of first single geobags are staggered and laid in multiple layers. Wing edges 11 are laid below two adjacent first single geobags in the same layer and in the same row. The wing edges 11 are fixedly connected to one of the first single geobags.

[0037] The surface layer tandem geobag anti-impact body 9 includes a plurality of second single geobags which are offset, stacked, extruded and attached to the outer side of the inner layer wing-linked geobag reinforcement body 12, and the plurality of second single geobags in the same row are reinforced and connected by ropes 8.

[0038] In some optional embodiments, two first single geobags adjacent to each other in the vertical direction are staggered in both the front-to-back direction and the left-to-right direction; two adjacent first single geobags located on the same layer but in adjacent rows are staggered in the left-to-right direction;

[0039] Two adjacent second single geobags located in adjacent rows are arranged alternately in the left-right direction, and the second single geobags and adjacent first single geobags are arranged alternately in the front-to-back direction and the left-to-right direction.

[0040] Such an arrangement ensures that two adjacent geobags are always staggered, so that the geobags can fit tightly together and increase the tightness between the geobags in the upper and lower layers and between the geobags in adjacent rows.

[0041] In some optional embodiments, the connection method of the second single geobag in the surface tandem geobag anti-scour body 9 includes not only linear connection, but also cross connection and cross-bag connection, so as to enhance the stability and strength of the overall structure. These connection methods allow the second single geobag to support each other in multiple directions, thereby improving its resistance to complex water flow.

[0042] In some optional embodiments, the first single geobag is filled with conventional fillers obtained from local materials, thereby forming a conventional geobag 3. Wings 11 are fixed to opposite sides of the bottom of the conventional geobag 3 to form a double-wing geobag 10. The double-wing geobag 10 is located between two adjacent conventional geobags 3 in the same row, and the conventional geobag 3 is pressed above the wing 11.

[0043] In this embodiment, the conventional filler is a non-permeable filler that is easily obtained at the construction site, thereby improving the convenience of construction. The length of the wing edge 11 is not less than 1 / 3 of the long side of the bag body, and the width is not less than 1 / 2 of the short side of the bag body. The wing edge 11 is fully unfolded and sandwiched between the two first single geotextile bags.

[0044] In some optional embodiments, the second unit geobag is filled with conventional fillers obtained from local materials, and two buckles 7 are fixed to the top of the second unit geobag along the length direction of the bag body. Several second unit geobags in the same row and several buckles 7 at the same position are passed through the rope 8, and both ends of the rope 8 are tied to the buckles 7 at the end.

[0045] In this embodiment, double rows of buckles 7 connected to the bag body are sewn at 1 / 3 and 2 / 3 of the middle axis of the bag body to facilitate the connection of the geobag with ropes 8. A high-strength, wear-resistant rope 8 is passed through the buckle 7 to form a surface-layer tandem geobag anti-scour body 9 structure; the surface-layer tandem geobag anti-scour body 9 is vertically and horizontally staggered and arranged at the outermost layer of the inner wing-connected geobag reinforcement body 12.

[0046] In some optional embodiments, the material filled in part of the first single geobag and part of the second single geobag is replaced by a permeable filler instead of a conventional filler, and the first single geobag and the second single geobag filled with the permeable filler respectively form a permeable prism geobag 4, and a plurality of connected permeable prism geobags 4 form a permeable module 13;

[0047] Several permeable modules 13 are arranged along the height direction and horizontal direction of the earth-rock embankment. Seen from the side of the earth-rock embankment, the permeable modules 13 cross the inner wing-connected geobag reinforcement body 12 and the surface series-connected geobag anti-scouring body 9. Several permeable prism geobags 4 in the permeable modules 13 are staggered in a stepped manner, and the high end of the permeable modules 13 is located on the back slope 2.

[0048] In some optional embodiments, viewed from the front of the earth-rock dam, the plurality of permeable modules 13 are distributed in a continuous isosceles triangle-like plum blossom pattern.

[0049] The permeable prism geobag 4 can play an anti-filtration efficiency mechanism, which can effectively allow the infiltrated water inside the dam body to flow out, can quickly remove the accumulated water inside the dam, reduce the pore water pressure, and reduce the permeability inside the dam, thereby significantly improving the stability of the entire dam.

[0050] The provision of the permeable prismatic geobag 4 does not change the structure of the overall anti-scouring reinforcement system, but only replaces the internal filler with a permeable filler, thereby not only achieving anti-scouring of the dam body, but also facilitating the outflow of water inside the dam body, thereby improving the stability of the dam body. The stepped staggered distribution of the permeable prismatic geobag 4 facilitates the outflow of water inside the dam body.

[0051] In some optional embodiments, the arrangement of the permeable prism geobags 4 is associated with the infiltration line, with dense arrangement below the infiltration line and sparse arrangement at the height of the infiltration line, that is, dense arrangement in the middle and lower parts and sparse arrangement in the upper parts.

[0052] Specifically, let the height of the earth-rock dam be H.

[0053] When H≤5m, the permeable prism geobags 4 are arranged in 3 layers, with heights of 1 / 8H, 1 / 3H, and 2 / 3H respectively;

[0054] When 5m<H≤10m, the permeable prism geobags 4 are arranged in 5 layers, with heights of 1 / 8H, 1 / 4H, 1 / 3H, 1 / 2H, and 2 / 3H respectively;

[0055] When H>10m, 8 layers of permeable prismatic geobags 4 are arranged, and the heights are 1 / 8H, 1 / 5H, 1 / 4H, 1 / 3H, 1 / 2H, 3 / 5H, 2 / 3H, and 4 / 5H respectively.

[0056] In some optional embodiments, a layer of one-way permeable geomembrane is arranged below the wetting line of the back slope 2, and the one-way permeable geomembrane allows water on the back slope 2 to flow out through the one-way permeable geomembrane.

[0057] Thereby strengthening the anti-seepage and reverse filtration function of the system and improving the water flow safety of the system.

[0058] In some optional embodiments, the outer surface contour of the surface tandem geobag anti-scour body 9 is designed with a bionic streamline 5-type curve, and the curve should satisfy the following control equation:

[0059] y(t)=H×(1-t) 2 ×P 0y +2H×(1-t)×t×P 1y +H×t 2 ×P 2y(1)

[0060] Among them, P 0y , P 1y , P 2y is the vertical coordinate of the control point, t is a parameter used to define the position of any point on the curve, and its value range is between 0 and 1. H is the height of the earth-rock dam, and y(t) is the vertical coordinate of the curve at parameter t.

[0061] In this embodiment, along the length direction of the dam body, the outer contour is set to a bionic streamline 5 every 30 to 100 meters, which can effectively reduce the scouring ability of the water flow on the reinforcement system and significantly improve the stability of the entire dam.

[0062] In some optional embodiments, in the reinforcement system, the anti-sliding stability safety factor of the earth-rock dam slope is calculated using formula (2):

[0063]

[0064] Among them, c i is the effective cohesion of the ith soil strip (unit: kPa), l i is the length of the bottom surface of the i-th soil strip in the arc segment (unit: m), W i is the weight of the i-th soil strip in the arc segment (unit: kN), u i is the pore water pressure of the i-th soil strip in the arc segment (unit: kPa), b i is the width of the i-th soil strip of the arc segment (unit: m), α i is the angle between the bottom surface of the i-th soil strip in the arc segment and the horizontal plane (unit: °), Φ i is the effective internal friction angle of the i-th filler layer (unit: °), F bag,i The anti-sliding force provided by the i-th geobag (unit: kN), W i ′ is the weight of the i-th geobag (unit: kN), μ i is the friction coefficient between the i-th geobag and the soil, α i ′ is the angle between the ith geobag and the sliding surface (unit: °);

[0065] When the calculated anti-sliding stability safety factor is greater than or equal to the minimum allowable value of the anti-sliding stability safety factor of the embankment slope in the specification, construction can be carried out according to the preset geobag laying method.

[0066] The specific steps of the present invention are as follows:

[0067] Step 1: On-site environmental investigation, including construction conditions, water permeability of dam materials, etc.

[0068] The construction conditions are mainly determined by the local historical floods and soil and rock conditions; the permeability of the dam materials is mainly determined by the infiltration line of the earth-rock dam.

[0069] Step 2, selecting a material with a certain water permeability to make a permeable prismatic geobag 4.

[0070] Step 3, using numerical analysis method to obtain the infiltration line of the earth-rock dam and then determine the number and position of the permeable prism geobags 4 on the back slope 2.

[0071] Step 4, the preparation and laying of the inner wing-linked geobag reinforcement body 12. The inner wing-linked geobag reinforcement body 12 is composed of conventional geobags 3 and double-wing geobags 10 arranged crosswise, wherein the permeable prism geobags 4, conventional geobags 3 and double-wing geobags 10 are arranged crosswise according to the layout quantity and position of the permeable prism geobags 4 determined in step 3; the permeable prism geobags 4, conventional geobags 3 and double-wing geobags 10 are arranged crosswise and rolled and laid on the top 1, the toe 6 and the back slope 2 of the earth-rock dam.

[0072] Step 5, laying the second single geobag with buckle 7 on the outermost layer, the second single geobag is staggered and rolled and laid on the outermost side of the inner wing-linked geobag reinforcement body 12, and connected with ropes to form a surface series-type geobag anti-impact body 9, and the surface series-type geobag anti-impact body 9 is vertically and horizontally staggered and arranged on the inner wing-linked geobag reinforcement body 12.

[0073] The outer contour of the surface series-connected geobag anti-scour body 9 is set to the shape of a bionic streamline 5 every 30 to 100 meters.

[0074] Before actual construction, calculate the system's anti-sliding stability safety factor for the embankment slope and determine the laying method of the geobags. When the calculated anti-sliding stability safety factor is greater than or equal to the minimum allowable value of the anti-sliding stability safety factor for the embankment slope in the specification, construction can be carried out according to the preset geobag laying method. After the geobags are put into use, their performance and stability should be monitored regularly, and necessary maintenance and repairs should be carried out in a timely manner to ensure the long-term effectiveness of the geobags.

[0075] Furthermore, in step 2, the detailed method of selecting a material with a certain water permeability to make a water-permeable prismatic geobag 4 is as follows:

[0076] Step 21: Generally, locally available stone materials, such as crushed stone, angular gravel or gravel, are selected as the filling materials of the permeable prismatic geobag 4; the filling materials should have good permeability and sufficient strength.

[0077] Step 22, the production of the permeable prism geobag 4, select suitable geobag materials, such as polypropylene or polyethylene woven cloth, to ensure that it has sufficient tensile strength and durability. Cut the geobag material according to the design size. If the permeable prism geobag 4 is part of the surface tandem geobag anti-scouring body 9, sew double rows of buckles 7 connected to the bag body at 1 / 3 and 2 / 3 of the long center axis of the bag surface. The buckle 7 is designed to be semicircular to reduce stress concentration. Ensure that the aperture of the buckle 7 is suitable for the required rope 8, usually 1-2 cm larger than the rope 8. Finally, sew at the bag mouth to ensure the sealing of the bag mouth.

[0078] The bag fabric of the permeable prismatic geobag 4 is made of a material with high tensile strength and durability to ensure the durability and impact resistance of the overall structure, so as to ensure the stability and protective effect of the permeable prismatic geobag 4 under water flow load.

[0079] Step 23, fill the selected materials into the geobags to ensure uniform filling. Finally, sew the bag opening to ensure the tightness of the bag opening. Lay the filled permeable prism geobags 4 at appropriate locations of the earth-rock dam according to system requirements.

[0080] In step 3, the specific steps of determining the infiltration line of the earth-rock embankment by numerical analysis method include:

[0081] Step 31, build the model: First, you need to build a geometric model of the earth-rock dam, including the dam body, upstream and downstream boundary conditions, and the material properties of the dam body. According to the soil test results, select a suitable constitutive model (such as the Mohr-Coulomb model, Cambridge model, etc.) to describe the stress-strain relationship of the soil. Take soil samples from the construction site and conduct indoor tests to measure their basic physical properties, such as dry density, moisture content, particle size distribution, permeability, compressibility, shear strength, etc.;

[0082] Step 32, mesh division: Divide the geometric model of the dam into a finite number of mesh units, which can be triangles or quadrilaterals. Perform local mesh refinement in areas where the seepage field changes dramatically to improve the calculation accuracy.

[0083] Step 33, define material properties: specify the permeability and other relevant hydraulic properties of the earth-rock dam material for each unit, and the permeability, elastic modulus, Poisson's ratio, shear modulus, bulk modulus and other physical properties of the dam material for each unit. If the dam material is heterogeneous, this heterogeneous distribution needs to be considered in the model, which may be achieved through random generation or interpolation methods based on geological data. If the material exhibits anisotropy, anisotropic properties need to be defined in the model.

[0084] Step 34, apply boundary conditions: define the water level changes upstream and downstream, consider the changes in water level over time, and possible extreme weather conditions; define the location and conditions of seepage outlets, such as drainage holes, drainage ditches, etc.; consider other boundary conditions that may affect the stability of the dam, such as earthquakes, temperature changes, construction loading, etc.

[0085] Step 35, function solving equations: Use finite element software (such as ANSYS, ABAQUS, etc.) to solve the governing equations of the seepage field, which usually involves nonlinear problems because the permeability may change with changes in hydraulic gradient or pore water pressure.

[0086] Step 36, result analysis: Analyze the calculation results and determine the location of the seepage line. The seepage line is the intersection of the free water surface and the cross section of the dam body in the seepage field. Compare the numerical simulation results with the measured data to verify the accuracy of the model and make adjustments as needed.

[0087] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0088] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams, characterized in that: include: An inner wing-connected geobag reinforcement body (12), the inner wing-connected geobag reinforcement body (12) comprising a plurality of first single geobags laid on the dam crest (1) and the backwater slope (2) of the earth-rock dam, the plurality of first single geobags being staggered and laid in multiple layers, a wing edge (11) being laid below two adjacent first single geobags in the same layer and in the same row, the wing edge (11) being fixedly connected to one of the first single geobags; The surface layer series-connected geobag anti-impact body (9) comprises a plurality of second individual geobags which are stacked and extruded and attached to the outer side of the inner layer wing-connected geobag reinforcement body (12), and the plurality of second individual geobags in the same row are connected by ropes (8).

2. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 1 is characterized in that: Two adjacent first-unit geobags are arranged alternately in the front-to-back direction and the left-to-right direction; two adjacent first-unit geobags located on the same layer but in adjacent rows are arranged alternately in the left-to-right direction; Two adjacent second-unit geobags in adjacent rows are staggered in the left-right direction, and the second-unit geobags and the adjacent first-unit geobags are staggered in the front-to-back direction and the left-to-right direction.

3. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 1 is characterized in that: The first single geobag is filled with conventional fillers obtained from local materials, thereby forming a conventional geobag (3). The wings (11) are respectively fixed to the opposite sides of the bottom of the conventional geobag (3) to form a double-wing geobag (10). The double-wing geobag (10) is located between two adjacent conventional geobags (3) in the same row, and the conventional geobag (3) is pressed above the wings (11).

4. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 3 is characterized by: The second single geobag is filled with conventional fillers obtained from local materials. Two buckles (7) are fixedly connected to the top of the second single geobag along the length direction of the bag body. Several second single geobags located in the same row and several buckles (7) located in the same position are passed through the rope (8), and both ends of the rope (8) are tied to the buckles (7) at the end.

5. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 4 is characterized in that: The material filled in part of the first single geobag and part of the second single geobag is replaced with a water-permeable filler from a conventional filler, the first single geobag and the second single geobag filled with the water-permeable filler respectively form a water-permeable prism geobag (4), and a plurality of connected water-permeable prism geobags (4) form a water-permeable module (13); The permeable modules (13) are arranged in a plurality along the height direction and the horizontal direction of the earth-rock dam. When viewed from the side of the earth-rock dam, the permeable modules (13) cross the inner wing-connected geobag reinforcement body (12) and the surface series-connected geobag anti-scouring body (9). The plurality of permeable prism geobags (4) in the permeable modules (13) are staggeredly distributed in a stepped manner, and the high end of the permeable modules (13) is located on the back slope (2).

6. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 5 is characterized in that: When viewed from the front of the earth-rock dam, the plurality of water-permeable modules (13) are distributed in a continuous isosceles triangle-like plum blossom pattern.

7. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 6 is characterized by: The arrangement of the permeable prism geotextile bags (4) is related to the infiltration line, being dense below the infiltration line and sparse above the infiltration line.

8. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 7 is characterized in that: A layer of one-way permeable geomembrane is arranged below the infiltration line of the backwater slope (2), and the one-way permeable geomembrane allows water on the backwater slope (2) side to flow out through the one-way permeable geomembrane.

9. The armor-type anti-filtration and anti-scouring reinforcement system for earth-rock dams according to claim 1 is characterized in that: The outer surface contour of the surface layer series-type geobag anti-scour body (9) adopts a bionic streamline (5) type curve design.

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