A turbulence energy dissipation type loess mudflow ductility disaster reduction structure and its working method

Abstract

The present invention belongs to the field of geological disaster prevention and control, and particularly relates to a flow-disturbing and energy-consuming type loess mudflow ductility disaster reduction structure and its working method. The structure includes a loess mudflow channel, a grid structure, and a grid barrier structure. The grid structure is composed of reinforced concrete pillars and shock-absorbing joints and is fixed in the loess mudflow channel. The grid barrier structure is composed of a variable cross-section cross beam and rotating blades made of reinforced concrete. The rotating blade ring is buckled on the variable cross-section cross beam, and drainage holes are arranged on the rotating blades. The grid barrier structure is connected to the grid structure through pins. When the loess mudflow flows through the barrier structure, it pushes the rotating blade to rotate, changing the flow state of the loess mudflow. At the same time, the shock of the structure is reduced through the shock-absorbing joints, realizing flow disturbance - energy consumption - sedimentation blocking. After the dredging is completed, the rotating blades can automatically reset under the action of gravity, and the damaged grid barrier structure can be replaced, reducing the later maintenance cost and increasing the durability of the structure.

Description

Technical Field

[0001] The present invention belongs to the field of geological disaster prevention and control, and specifically relates to a flow-disturbing and energy-consuming loess mudflow toughness disaster reduction structure and a working method thereof. Background Art

[0002] Unlike traditional mountain debris flows, loess mud flows are characterized by high viscosity, fast flow rate and obvious ballast. Once they occur, they will destroy major linear projects such as roads, railways, bridges, and natural gas pipelines, causing immeasurable economic losses.

[0003] At present, the main method of blocking loess mudflows is to arrange multi-stage silt dams in the ditch. These dams are made of compacted loess and span the ditch. Although the structure is simple, due to the nature of loess disintegrating when it comes into contact with water, it has poor durability and low rigidity. It is easy to suffer large-scale damage under heavy rainfall. After damage, the integrity of the loess silt dam structure is destroyed, which significantly reduces the blocking effect. In addition, the reservoir area is basically filled under a single mudflow, and the subsequent blocking function is lost.

[0004] The most common open retaining structure is the grid sand retaining dam, which mainly includes beam grid dam, comb dam, lattice dam and other forms. The grid structure has high rigidity and can retain large stones in the debris flow, realize the separation of water and stone during the impact of the debris flow, and reduce the impact force. However, the gaps between the grid structures are large, and it is not suitable for fine-grained viscous debris flows such as loess mudflows. In addition, the grid sand retaining dam is generally a concrete beam or steel directly embedded in the concrete column to form an integral structure with the column, which is difficult to repair after damage.

[0005] For flexible mesh retaining structures, since they rely on the elastic deformation of the wire mesh to offset the impact force, the large gaps in the mesh are not effective in blocking fine-grained viscous mudflows; at the same time, the fixation of the wire mesh to the channel strata requires a high anchoring strength, which makes it difficult to apply to the wide channels of mudflows on the Loess Plateau.

[0006] In summary, there are the following problems in preventing loess mudflow:

[0007] (1) The retaining structures such as Yudi dams and sand dams in the Loess Plateau are limited by their own material and structural characteristics. It is difficult to improve the durability of the retaining structures and difficult to maintain them after damage;

[0008] (2) The material composition of loess mudflow is significantly different from that of debris flow, which is reflected in the high content of fine particles. Therefore, the energy-dissipating barrier structures suitable for debris flow are difficult to apply to loess mudflow.

[0009] (3) Loess mudflows move quickly and have strong impact, which places higher demands on the toughness of retaining structures.

[0010] Therefore, it is necessary to develop a retaining structure suitable for loess mudflow with good durability, strong flow disturbance ability and high toughness. Summary of the Invention

[0011] The object of the present invention is to overcome the above deficiencies and provide a turbulence energy dissipation type loess mudflow resilience disaster reduction structure and its working method.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] In the first aspect, the present invention provides a turbulence energy dissipation type loess mudflow resilience disaster reduction structure, including a loess mudflow channel. A grid structure is arranged at the concave surface of the loess mudflow channel. The grid structure is composed of a number of reinforced concrete pillars. A grid structure is arranged between adjacent reinforced concrete pillars. The grid structure is composed of a number of variable cross-section crossbeams. A number of rotating blades are arranged along the horizontal direction of the variable cross-section crossbeams. The rotating blades on adjacent two layers of variable cross-section crossbeams are alternately distributed. Drainage holes are opened on the rotating blades.

[0014] The lower ends of the reinforced concrete pillars are embedded in the concave surface of the loess mudflow channel, and there is a gap between the bottom of the grid structure and the concave surface of the loess mudflow channel.

[0015] A number of saddle-shaped joints and shock-absorbing supports are installed on the side of the reinforced concrete pillar. Each saddle-shaped joint connects the upper and lower two shock-absorbing supports.

[0016] The shock-absorbing support includes two groups of parallel iron plates up and down. The iron plates include convex structures. Inner round holes are opened at the central positions of the convex structures. A rubber column is clamped between the inner round holes of the upper and lower iron plates. A number of layers of rubber pads are stacked around the rubber column. The outside of the rubber pads is closed with a rubber ring. The rubber ring is clamped on the convex structure.

[0017] Pin holes are opened at the ends of the saddle-shaped joints.

[0018] Round-ended joints are arranged at both ends of the variable cross-section crossbeam. Round holes are opened on the round-ended joints. The hole positions of the round holes correspond to those of the pin holes and the hole diameters are the same. A pin passes through the pin hole to fix the variable cross-section crossbeam and the reinforced concrete pillar.

[0019] The variable cross-section crossbeam includes an I-shaped cross-section beam web beam. The I-shaped cross-section beam web beam is externally connected to a circular cross-section beam. The rotating blade is sleeved outside the circular cross-section beam.

[0020] The rotating blade includes an upper blade and a lower blade. The upper blade and the lower blade are installed outside the circular cross-section beam through semi-circular loop buckles at the tails.

[0021] The rotating blades rotate independently. The thickness of the upper blade is half of the thickness of the lower blade.

[0022] In a second aspect, the present invention provides a working method for a turbulence energy dissipation type loess mudflow ductility disaster reduction structure. When the loess mudflow impacts the structure, the rotating blades of the grid structure rotate up and down under the impact of the mudflow. The water in the loess mudflow flows through the water discharge holes on the rotating blades to the downstream, and the solids in the loess mudflow flow through the gaps between the upper and lower rotating blades to the downstream.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a turbulence energy dissipation type loess mudflow ductility disaster reduction structure, including a loess mudflow channel. A grid structure is arranged at the concave surface of the loess mudflow channel. The grid structure is composed of several reinforced concrete columns. A grid structure is arranged between adjacent reinforced concrete columns. The grid structure is composed of several variable cross-section crossbeams. Several rotating blades are arranged along the horizontal direction of the variable cross-section crossbeams. The rotating blades on adjacent two layers of variable cross-section crossbeams are alternately distributed. Water discharge holes are formed on the rotating blades. By adding rotating blades in the horizontal direction of the variable cross-section crossbeams, on the one hand, the gap of the grid structure is reduced, and the over-flow capacity of fine particles is reduced, so that the sand retaining dam can be applied to loess mudflow disasters; on the other hand, the kinetic energy of the mudflow impact is converted into the rotational kinetic energy of the rotating blades, effectively reducing the impact force on the structure; at the same time, the water in the loess mudflow flows through the water discharge holes on the rotating blades to the downstream, and the solids in the loess mudflow flow through the gaps between the upper and lower rotating blades to the downstream, allowing part of the mudflow to pass through to reduce the sedimentation in front of the dam, and reducing the water content in the loess mudflow through the water discharge holes on the rotating blades, realizing soil-water separation and blocking, and thus realizing the simultaneous effect of blocking - energy dissipation - sedimentation stopping.

[0025] Furthermore, a gap is left between the bottom of the grid structure and the concave surface of the loess mudflow channel, enabling the sediments in the loess mudflow to pass through, preventing the natural deposition of loess and clogging the structure.

[0026] Furthermore, by using shock-absorbing bearings and I-shaped cross-section beams, the overall stability of the retaining structure and the stiffness of the grid structure are increased, better resisting the strong impact of the loess mudflow and increasing the durability of the structure.

[0027] Furthermore, the thickness of the upper blade of the rotating blade is half of the thickness of the lower blade, enabling the rotating blades of the assembled grid structure to vertically droop under the action of gravity, ensuring that the rotating blades can automatically reset after silt cleaning and achieving the result of ductile blocking.

[0028] Furthermore, the rotating blades rotate independently, enabling partial replacement of the grid structure, enhancing the service life of the structure and reducing the maintenance cost. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 A schematic diagram of a reinforced concrete pillar of a lattice structure in the present invention;

[0032] Figure 3 is a schematic diagram of a shock-absorbing joint in the present invention;

[0033] Figure 4 is a schematic diagram of the shock-absorbing support in the present invention;

[0034] Figure 5 Schematic diagram of the shock-absorbing support iron plate of the present invention;

[0035] Figure 6 Schematic diagram of the saddle joint in the present invention;

[0036] Figure 7 Schematic diagram of the grid structure of the present invention;

[0037] Figure 8 Schematic diagram of the variable cross-section beam structure of the present invention;

[0038] Figure 9 Schematic diagram of the web beam structure of the I-section beam of the variable cross-section beam structure in the present invention;

[0039] Figure 10 a is a schematic diagram of the vertical elevation of the rotating blade structure in the present invention;

[0040] Figure 10 b is a schematic diagram of the side surface of the rotating blade structure of the present invention;

[0041] Explanation of reference numerals in the figures: 1. Grid structure; 11. Reinforced concrete column; 12. Saddle-shaped joint; 121. Screw hole; 122. Pin hole; 14. Shock-absorbing bearing; 141. Iron plate; 142. Rubber column; 143. Rubber ring; 144. Rubber pad; 145. Fixing screw; 146. Protruding structure; 147. Inner round hole; 2. Loess mudflow channel; 3. Grid structure; 31. Variable cross-section cross beam; 311. Web beam of I-shaped cross-section beam; 312. Circular cross-section beam; 313. Round-end joint; 314. Round hole; 32. Rotating blade; 321. Upper blade; 322. Lower blade; 323. Semi-circular ring buckle; 324. Screw hole; 325. Drain hole; 4. Pin. Detailed implementation manners

[0042] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0043] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between 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.

[0044] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below" and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0045] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0046] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0047] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0048] Schematic diagrams of various structures according to the disclosed embodiments of the present invention are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures, and their relative sizes and positional relationships are only exemplary, and may actually deviate due to manufacturing tolerances or technical limitations. Those skilled in the art can additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0049] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0050] Embodiment 1

[0051] A turbulence energy dissipation type loess mudflow toughness disaster reduction structure is specifically described as follows:

[0052] As Figure 1 shown, a turbulence energy dissipation type loess mudflow toughness disaster reduction structure includes a loess mudflow channel 2. A grid structure 1 is fixedly arranged at the concave surface of the loess mudflow channel 2. The grid structure 1 includes a number of reinforced concrete columns 11. The reinforced concrete columns 11 are arranged at intervals according to the width of the concave surface of the loess mudflow channel 2. A part of the reinforced concrete columns 11 is embedded in the loess mudflow channel 2 to maintain stability. A grid structure 3 is arranged between adjacent reinforced concrete columns 11. The bottom of the grid structure 3 should leave a large space from the concave surface of the loess mudflow channel 2 to prevent the accumulation of loess in the natural state, so as to block the structure. The grid structure 3 is composed of a number of variable cross-section crossbeams 31. A number of rotating blades 32 are arranged in a loop along the horizontal direction of the variable cross-section crossbeams 31. The rotating blades 32 on adjacent two layers of variable cross-section crossbeams 31 are alternately distributed. Drainage holes 325 are provided on the rotating blades 32.

[0053] As Figures 2 - 6As shown in the figure, several saddle-shaped joints 12 and shock-absorbing bearings 14 are installed on the side of each reinforced concrete pillar 11. Each saddle-shaped joint 12 connects the upper and lower shock-absorbing bearings 14. A pin hole 13 is opened at the front end of the saddle-shaped joint 12; each shock-absorbing bearing 14 includes two groups of upper and lower parallel iron plates 141. Fixed screws 145 are provided at the four corners of each iron plate 141. The iron plate 141 includes a convex structure 146. An inner round hole 147 is opened at the center of the convex structure 146. A rubber column 142 is clamped between the inner round holes 147 of the upper and lower iron plates 141. A plurality of rubber pads 144 are provided between the upper and lower bearing iron plates 141 of each shock-absorbing bearing 14. The plurality of rubber pads 144 are stacked around the rubber column 142. The outside of the plurality of rubber pads 144 is closed by a rubber ring 143. The rubber ring 143 is clamped on the convex structure 146; a plurality of screw holes 121 are opened on the surface of the saddle-shaped joint 12. The fixed screw 145 of the shock-absorbing bearing 14 passes through the screw hole 121 and is fixed to the saddle-shaped joint 12.

[0054] As Figures 7 - 9 shown in the figure, the grid structure 3 is composed of a reinforced concrete variable cross-section beam 31 and a rotating blade 32. The two ends of the variable cross-section beam 31 are round-end joints 313. A round hole 314 is opened in the middle of the round-end joint 313. The size of the round hole 314 should be the same as the hole position and hole diameter of the pin hole 13 of the saddle-shaped joint 12. The variable cross-section beam 31 is fixed to the saddle-shaped joint 12 by passing a pin 4 through the pin hole 13. The variable cross-section beam 31 includes an I-shaped cross-section beam web 311. The I-shaped cross-section beam web 311 is cast into a square shape. A circular cross-section beam 312 is externally connected to the center of the I-shaped cross-section beam web 311.

[0055] As Figure 10 shown in the figure, a rotating blade 32 is sleeved on the outer surface of the circular cross-section beam 312. The rotating blade 32 is composed of two upper and lower blades. The thickness of the upper blade 321 is half of the thickness of the lower blade 322. The tail of each blade is a semi-circular ring buckle 323. A screw hole 324 is opened thereon. The upper and lower blades are buckled to the variable cross-section beam 31 through the semi-circular ring buckle 323 and fixed by passing 8 screws through the screw holes 324 (4 for the upper blade 321 and 4 for the lower blade 322 respectively). The diameter of the semi-circular ring buckle 323 is larger than the diameter of the circular cross-section beam 312 of the variable cross-section beam 31. After the connection is completed, the rotating blade 32 should naturally droop under the action of gravity. Circular drain holes 325 with a diameter of 6 cm are equally spaced on the rotating blade 32. The diameter of the drain hole 325 can be adjusted according to the properties of the loess. For silty loess, it is easy to achieve the effect of water and soil separation during the flow process, and the diameter of the drain hole 325 can be appropriately reduced. For cohesive loess with a high clay content, it is not easy to achieve the effect of water and soil separation, and too small a diameter of the drain hole 325 is likely to cause blockage. Therefore, the diameter of the drain hole 325 can be appropriately increased; the applicability of the structure is improved and the cost is reduced by replacing the rotating blade 32 with different diameters of drain holes 325.

[0056] Preferably, for highly fluid loess mudflows, the spacing of the grid structure 3 can be appropriately reduced, and for low-fluidity loess mudflows, the spacing of the grid structure 3 can be increased.

[0057] Preferably, the specific spacing of the reinforced concrete columns 11 is recommended to have a clear distance of 6 - 10 m, to prevent too small a spacing from affecting the structure's blocking effect and too large a spacing from causing flexural deformation of the grid structure 3 under its own weight.

[0058] Preferably, the depth of the reinforced concrete column 11 embedded in the concave surface of the loess mudflow channel 2 is half of the exposed height. The exposed height of the column can be determined according to the predicted flow depth of the loess mudflow, and the exposed height of the column should be greater than the flow depth of the loess mudflow.

[0059] Preferably, one shock-absorbing bearing 14 is connected above and below each saddle-shaped joint 12, which can weaken the vibration of the joint during the mudflow impact and prevent the joint from being damaged during the impact; the saddle-shaped joints 12 are arranged at equal intervals in the vertical direction along the center line of the reinforced concrete column 11, and the spacing is greater than half of the length of the rotating blade 32, to prevent the rotating blade 32 from being obstructed during the flow of the loess mudflow.

[0060] Preferably, the thickness of the upper blade 321 of the rotating blade 32 is half of the thickness of the lower blade 322, so that the rotating blade 32 of the assembled grid structure 3 can vertically droop under the action of gravity, ensuring that the rotating blade 32 can automatically reset after silt cleaning, achieving the result of flexible blocking. And the distance between the bottommost rotating blade 32 and the concave surface of the loess mudflow channel 2 should be between 0.3 - 0.5 m, to prevent the blockage in the loess mudflow channel 2 from preventing the normal operation of the rotating blade 32 under normal circumstances.

[0061] Preferably, the rotating blades 32 all rotate independently. By this independent rotation method, on the one hand, it prevents some blades from being damaged during the flow process and affecting the normal operation of the remaining rotating blades 32, and on the other hand, the damaged rotating blades 32 can be independently replaced, reducing the cost of later maintenance.

[0062] Preferably, the rotating blades 32 and the variable cross-section crossbeam 31 are made of concrete. Concrete has excellent compressive performance and strong corrosion resistance, and is not easily aged or corroded in harsh environments such as humidity and salt spray; and the stiffness of concrete is relatively large, which can effectively suppress vibration or deformation; concrete can be cast through a formwork to achieve complex casting shapes, optimize the stress distribution, reduce material redundancy, and improve the structural efficiency.

[0063] Preferably, the length of the web beam 311 of the I-shaped cross-section beam of the variable cross-section crossbeam 31 is 0.5 m, the length of the circular cross-section beam 312 is 0.42 m, the rotating blade 32 is located in the middle of the circular cross-section beam 312, and the width is 0.4 m; the diameter of the water discharge hole 325 on the rotating blade 32 is 0.03 m, and the center distance is 0.12 m.

[0064] Embodiment 2

[0065] A working method of a flow-disturbing and energy-dissipating type loess mudflow toughness disaster reduction structure is as follows:

[0066] The specific construction sequence of the structure of the present invention is as follows: First, dig a pile hole for burying the reinforced concrete pillar 11 in the loess mudflow gully 2, pour the reinforced concrete pillar 11 on-site, and reserve space for the shock-absorbing bearing 14. At the same time, precast the reinforced concrete variable cross-section beam 31 and the reinforced concrete rotating blade 32. After the pillar reinforced concrete solidifies, install and fix the shock-absorbing bearing 14, connect the shock-absorbing bearing 14 and the saddle-shaped joint 12, then connect the saddle-shaped joint 12 with the round-end joint 313 of the variable cross-section beam 31, and finally install the rotating blades 32 from top to bottom in sequence, and debug whether the rotating blades 32 rotate correctly, that is, the construction is completed.

[0067] After the construction is completed, the disaster reduction structure starts to work. When the loess mudflow impacts the structure, the rotating blades 32 of the grid structure 3 rotate up and down under the impact. Due to the different flow velocities at different depths of the loess mudflow, the continuous rotation of the rotating blades 32 can be realized, that is, the continuous conversion of the mudflow kinetic energy - the kinetic energy of the rotating blades 32, to achieve the continuity of flow disturbance and energy conversion, thereby reducing the flow velocity of the loess mudflow and the impact on the building; the water in the loess mudflow is drained through the water discharge holes 325 on the rotating blades 32, and the solids flow downstream through the gap between the upper and lower rotating blades 32, realizing the effect of solid-liquid separation and partial flow-through.

[0068] Preferably, for the loess mudflow deposited in the reservoir area of the retaining structure (the gap between the bottom of the grid structure 3 and the concave surface of the loess mudflow gully 2), a high-pressure water gun can be used to dilute the mudflow to facilitate the development of the dredging work.

[0069] Finally, it should be noted that the above embodiments only describe the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0070] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A spoiler energy-consuming type loess mudflow toughness disaster reduction structure, characterized in that, It includes a loess mudflow gully (2), and a grid structure (1) is arranged at the concave surface of the loess mudflow gully (2). The grid structure (1) is composed of a number of reinforced concrete columns (11). A grid structure (3) is arranged between adjacent reinforced concrete columns (11). The grid structure (3) is composed of a number of variable cross-section cross beams (31). A number of rotating blades (32) are arranged along the horizontal direction of the variable cross-section cross beam (31). The rotating blades (32) on adjacent two layers of variable cross-section cross beams (31) are alternately distributed. Drainage holes (325) are opened on the rotating blades (32). A number of saddle-shaped joints (12) and shock-absorbing supports (14) are installed on the side surface of the reinforced concrete column (11). Each saddle-shaped joint (12) connects the upper and lower two shock-absorbing supports (14). The shock-absorbing support (14) includes two groups of parallel iron plates (141) up and down. The iron plate (141) includes a convex structure (146). An inner round hole (147) is opened at the center position of the convex structure (146). A rubber column (142) is clamped between the inner round holes (147) of the upper and lower iron plates (141). A number of layers of rubber pads (144) are stacked around the rubber column (142). The outer side of the rubber pad (144) is sealed by a rubber ring (143). The rubber ring (143) is clamped on the convex structure (146).

2. The turbulence energy dissipation type loess mudflow toughness disaster reduction structure according to claim 1, characterized in that The lower end of the reinforced concrete column (11) is embedded in the concave surface of the loess mudflow gully (2), and there is a gap between the bottom of the grid structure (3) and the concave surface of the loess mudflow gully (2).

3. A turbulence energy dissipation type loess mudflow toughness disaster reduction structure according to claim 1, characterized in that, A pin hole (13) is opened at the end of the saddle-shaped joint (12).

4. The turbulence energy dissipation type loess mudflow toughness disaster reduction structure according to claim 3, characterized in that Round-ended joints (313) are arranged at both ends of the variable cross-section cross beam (31). Round holes (314) are opened on the round-ended joints (313). The hole positions of the round holes (314) correspond to the pin holes (13) and the hole diameters are the same. A pin (4) passes through the pin hole (13) to fix the variable cross-section cross beam (31) and the reinforced concrete column (11).

5. A spoiler energy-consuming type loess mudflow toughness disaster reduction structure according to claim 1, characterized in that The variable cross-section cross beam (31) includes an I-shaped cross-section beam web beam (311). The I-shaped cross-section beam web beam (311) is externally connected with a circular cross-section beam (312). The rotating blade (32) is sleeved outside the circular cross-section beam (312).

6. A turbulence energy dissipation type loess mudflow toughness disaster reduction structure according to claim 5, characterized in that, The rotating blade (32) includes an upper blade (321) and a lower blade (322). The upper blade (321) and the lower blade (322) are installed outside the circular cross-section beam (312) through a semi-circular ring buckle (323) at the tail.

7. The turbulator energy dissipation type loess mudflow toughness disaster reduction structure according to claim 6, characterized in that, The rotating blade (32) rotates independently, and the thickness of the upper blade (321) is half of the thickness of the lower blade (322).

8. A working method of a flow-disturbing and energy-dissipating type loess mudflow resilience disaster reduction structure, based on the flow-disturbing and energy-dissipating type loess mudflow resilience disaster reduction structure described in any one of claims 1 to 7, characterized in that, When the loess mudflow impacts the structure, the rotating blades (32) of the grid structure (3) rotate up and down under the impact of the mudflow. The water in the loess mudflow flows through the drainage holes (325) on the rotating blades (32) to the downstream, and the solids in the loess mudflow flow to the downstream through the gap between the upper and lower rotating blades (32).

Images