Intercepting protection device for debris flow geological disaster prevention

Abstract

The application provides a blocking protection device for preventing and treating debris flow geological disasters, which comprises an energy absorber arranged in front of a flexible protection net, the flexible protection net arranged on one side of the energy absorber, the energy absorber and the flexible protection net arranged on one side of the energy absorber forming a double-layer flexible blocking protection device, the energy absorber is arranged in multiple groups and is uniformly distributed along the transverse direction of the base, and the energy absorber comprises a mounting shaft. The flexible energy absorption sleeve reduces the impact force of the debris flow. Then, through the arrangement of the two groups of flexible protection nets, the coarse-grained gravel and other solid impurities can be effectively intercepted, thereby playing the roles of energy absorption, interception and dredging, and thereby playing the effect of regulating the mud and sand. Compared with the solid gravity dam, the device has the advantages of good stress condition, material saving, convenient construction, good stone blocking and drainage effect, and the probability of damage of the flexible protection net is effectively reduced through the cooperation of the flexible energy absorption sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of geological disaster prevention technology, and specifically relates to an interception and protection device for debris flow geological disaster prevention and control. Background Technology

[0002] Debris flows typically occur as landslides in mountainous areas. Their occurrence is greatly influenced by the natural environment, and while the causes are multifaceted, the majority are related to continuous rainfall. my country, in particular, has a vast territory and complex terrain, with mountainous areas accounting for about two-thirds of the country's total area. These mountainous regions almost universally possess the basic conditions for debris flow formation, making them more prone to natural disasters such as landslides.

[0003] Debris flows are far more destructive than ordinary mountain floods, characterized by their suddenness and destructiveness. While solid dams are commonly used for prevention and control, they are highly susceptible to overflow when relying solely on solid dams for debris flows, which are primarily water-driven. In some areas, flexible protective nets are used for protection. However, the presence of large amounts of coarse particles, fine sediment, and free water within the debris flow creates significant impact, making these flexible nets extremely vulnerable to damage.

[0004] Therefore, how to address the shortcomings of existing technologies has become one of the urgent problems to be solved in the field of disaster monitoring and early warning technology. Utility Model Content

[0005] In view of the problems existing in the background art, this utility model provides, on the one hand, an interception and protection device for the prevention and control of debris flow geological disasters, including,

[0006] An energy dissipator is installed in front of the flexible protective netting.

[0007] A flexible protective net is located on one side of the energy dissipator.

[0008] The energy dissipator and the flexible protective net located on one side of it form a double-layer flexible interception and protection device.

[0009] The energy dissipators are arranged in multiple groups and are evenly distributed along the transverse direction of the base.

[0010] The energy dissipator includes a mounting shaft.

[0011] The mounting shaft is made of stainless steel and is hollow.

[0012] The mounting shaft is provided with at least two sets of clamping clamps.

[0013] It is mounted on the mounting shaft using high-strength bolts.

[0014] Furthermore, each of the tensioning clamps is equipped with a rotating washer.

[0015] Furthermore, a flexible energy dissipation sleeve is provided between the upper and lower sets of rotating pads to connect them, making them an integrated unit.

[0016] Optionally, the flexible protective net includes a truss.

[0017] The truss is equipped with at least three sets of mounting seats.

[0018] The ear plates of the mounting base are connected to the ear plates of the first support frame and the second support frame by high-strength fastening bolts.

[0019] Optionally, the first support frame and the second support frame are arranged in a triangle.

[0020] Clamping plates connected to the end faces of the first and second support frames located away from the mounting base are provided thereon.

[0021] And the ear plate is connected by a hinged connector.

[0022] The ear plate is disposed on the support plate, and the ear plate and the support plate are integrally disposed.

[0023] Optionally, the support plate is equipped with stainless steel beams.

[0024] Optionally, a first flexible protective net is installed on the stainless steel beam and fixedly connected to it.

[0025] Furthermore, the first flexible protective net is connected to the second flexible protective net via steel bolts.

[0026] The second flexible protective net and the first flexible protective net are set at an angle.

[0027] Optionally, the stainless steel beam and the second flexible protective net are connected by an elastic cable mechanism.

[0028] Optionally, at least two sets of positioning holes are provided on both the stainless steel beam and the second flexible protective net frame.

[0029] Furthermore, a tensioning connector is installed inside the positioning hole.

[0030] The tensioning connector includes an outer bushing integrally formed therewith.

[0031] Optionally, one end of the outer bushing extends out of the mounting seat of the tensioning connector.

[0032] And it passes through the fastening connecting sleeve,

[0033] The fastening sleeve is flared in shape.

[0034] The inner wall of the fastening sleeve is fitted with a tensioning connector by high-strength bolts.

[0035] Furthermore, the tensioning connector includes three sets of inclined connecting frames.

[0036] The connecting bracket extends into the snap-fit ​​groove on the inner wall of the fastening connecting sleeve for use and for snap-fit ​​connection.

[0037] Optionally, the end face of the tensioning connector away from the connecting frame is provided with a clamping sleeve integrally configured therewith for clamping the elastic cable;

[0038] A clamping sleeve, integrally formed with the fastening connecting sleeve, is provided on the inner wall of the outlet end of the fastening connecting sleeve.

[0039] This allows multiple sets of elastic cables to extend into the clamping sleeve, be clamped by the clamping sleeve, and then extend into the outer bushing, which is integrally formed with the fastening connecting sleeve. In summary, the beneficial effects of this utility model are:

[0040] This invention reduces the impact force of debris flows by using flexible energy-dissipating sleeves; then, by setting up two sets of flexible protective nets, it can effectively intercept coarse-particle gravel and other solid impurities, thereby playing a role in energy dissipation, interception, and drainage, and thus regulating the sediment. Compared with solid gravity dams, it has better stress conditions, saves materials, is easy to construct, has a good rock-blocking and drainage effect, and the use of flexible energy-dissipating sleeves effectively reduces the probability of damage to the flexible protective nets. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the interception and protection device for debris flow geological disaster prevention and control according to this utility model;

[0042] Figure 2 This is an assembly diagram of a flexible protective net for an embodiment of the interception and protection device for debris flow geological disaster prevention and control according to this utility model;

[0043] Figure 3 This is an assembly drawing of the stainless steel beam and support of an embodiment of the interception and protection device for debris flow geological disaster prevention and control according to this utility model;

[0044] Figure 4 This utility model Figure 3 Enlarged view of the structure at position B in the middle;

[0045] Figure 5 This utility model Figure 3 Enlarged view of the structure at position C;

[0046] Figure 6 This utility model Figure 1 Enlarged view of the structure at position A in the middle;

[0047] Figure 7This is a two-dimensional structural diagram of the elastic cable mechanism of an embodiment of the interception and protection device for debris flow geological disaster prevention and control of this utility model;

[0048] Figure 8 This is a schematic diagram of the effective device structure of an embodiment of the interception and protection device for debris flow geological disaster prevention and control according to this utility model.

[0049] Figure label:

[0050] 100. Interception and protection devices;

[0051] 10. Base;

[0052] 20. Energy dissipator; 201. Tightening clamp; 202. Flexible energy dissipation sleeve; 203. Installation shaft;

[0053] 30. Elastic cable mechanism; 301. Outer bushing; 304. Elastic cable; 305. Tensioning connector; 306. Connecting frame; 307. Fastening connecting sleeve; 308. Clamping sleeve;

[0054] 40. Flexible protective netting; 401. First flexible protective netting; 402. Second flexible protective netting;

[0055] 50. Stainless steel beams;

[0056] 60. Bracket; 601. First support frame; 602. Second support frame; 603. Support plate; 604. Ear plate; 605. Hinge connector; 606. Clamping plate; 608. Mounting base; 609. Connecting ear plate;

[0057] 70. Truss. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to facilitate a more thorough understanding of the present utility model and to fully convey the concept of the present utility model to those skilled in the art.

[0059] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] like Figure 1-8 As shown, this embodiment provides an interception and protection device 100 for debris flow geological disaster prevention and control. The interception and protection device 100 includes an energy dissipator 20 disposed in front of the flexible protective net 40. The energy dissipator 20 is arranged in multiple groups and is evenly distributed along the transverse direction of the base 10. The energy dissipator 20 includes a mounting shaft 203, which is made of stainless steel and is hollow. The mounting shaft 203 can be installed on the base by grouting or by fastening screws or other fixed connections.

[0062] At least two sets of tensioning clamps 201 are provided on the mounting shaft 203 and are installed on the mounting shaft 203 by high-strength bolts. Each tensioning clamp 201 is provided with a rotating washer, and a flexible energy dissipation sleeve 202 is provided between the upper and lower sets of rotating washer to connect them and form an integrated structure.

[0063] In this embodiment, those skilled in the art should understand that when a debris flow arrives, the liquid in the debris flow first continuously impacts the flexible energy dissipation sleeve 202. When the debris flow impacts the flexible energy dissipation sleeve 202, it will cause the rotating flexible energy dissipation sleeve to rotate, thereby dissipating part of the impact load and reducing the impact force of the debris flow through the flexible energy dissipation sleeve 202.

[0064] Furthermore, the energy dissipator 20 and the flexible protective net located on one side thereto form a double-layer flexible interception and protection device. The flexible protective net 40 includes a truss 70, and at least three sets of mounting seats 608 are provided on the truss 70. The ear plates of the mounting seats 608 are connected to the ear plates of the first support frame 601 and the second support frame 602 by high-strength fastening bolts. The first support frame 601 and the second support frame are arranged in a triangle. Clamping plates 606 are provided on the end faces of the first support frame 601 and the second support frame 602 away from the mounting seats 608 and are connected to them by hinged connectors 605. The ear plates 604 are provided on the support plate 603 and are integrally formed with the support plate.

[0065] Furthermore, a stainless steel beam 50 is fixedly installed on the top end face of the support plate 603 by high-strength bolts.

[0066] Furthermore, a first flexible protective net 401 is provided on the stainless steel beam 50 and is fixedly connected to it. The first flexible protective net 401 is connected to a second flexible protective net 402 by steel bolts. The second flexible protective net 402 and the first flexible protective net are inclined together.

[0067] Furthermore, both the first flexible protective net 401 and the second flexible protective net 402 are made of grade III cold-rolled round steel with a diameter of 12mm, Ф48*8 hollow steel pipe and steel bar with a diameter of 5mm. During installation, the first flexible protective net 401 is first fixed with reinforced concrete. After the first flexible protective net is installed, three rows of prestressed anchor rods are set on both sides to strengthen the stability of the first flexible protective net.

[0068] Furthermore, the stainless steel beam 50 and the second flexible protective net are connected by an elastic cable mechanism 30. During installation, at least two sets of positioning holes are drilled on both the stainless steel beam 50 and the second flexible protective net frame using a drilling machine, and tensioning connectors 305 are installed in the positioning holes. Then, a bonding grout is injected at a pressure of 1.0 MPa to complete the connection between the tensioning connectors 305 and the stainless steel beam 50. The tensioning connectors 3058 include an outer bushing 301 integrally formed with them.

[0069] Furthermore, one end of the outer bushing 301 extends out of the mounting base of the tensioning connector 3058 and passes through the fastening connector 307. The fastening connector 307 is flared, and the inner wall of the fastening connector 307 is fitted with a tensioning connector 305 by high-strength bolts. The tensioning connector 305 includes three sets of inclined connecting brackets 306. The connecting brackets 306 extend into the snap-fit ​​grooves on the inner wall of the fastening connector 307 for engagement and snap-fit ​​connection.

[0070] Furthermore, the end face of the tensioning connector 305 away from the connecting frame 306 is provided with a clamping sleeve integrally configured therewith for clamping the elastic cable 304;

[0071] A clamping sleeve 308 is provided on the inner wall of the outlet end of the fastening connecting sleeve 307, which is integrally formed with the fastening connecting sleeve, so that multiple sets of elastic cables 304 can extend into the clamping sleeve 308, be clamped by the clamping sleeve, and extend into the outer bushing 301 integrally formed with the fastening connecting sleeve 307.

[0072] Furthermore, the elastic cable is made of spring steel wire with high elasticity and high mechanical strength.

[0073] In practical applications, the elastic deformation of the elastic cable mechanism is determined as follows:

[0074]

[0075] Rc ---Severity of debris flow (KN / m) 3 )

[0076] Debris flow velocity (m / s)

[0077] g — gravitational acceleration, g = 9.8;

[0078] α — Angle (degrees) between the stress-bearing surface of the building and the direction of debris flow impact;

[0079] λ — Building shape coefficient, λ = 1.0 for circular buildings, λ = 1.33 for rectangular buildings, and λ = 1.47 for square buildings.

[0080] The relationship between the closing force and the elastic deformation of the elastic cable: Within the elastic limit deformation condition, the elastic cable can recover to its original state. The magnitude of the closing force acting on the second flexible protective net is directly proportional to the tensile deformation of the elastic cable, which can be expressed by the formula ΔH = k·Fg.

[0081] In the formula, △H ——— deformation of the elastic cable (m);

[0082] k — Deformation coefficient of elastic cable material (MPa, N / m2);

[0083] Fg — Closing force (N) acting on the second flexible protective net.

[0084] The deformation ΔH of the elastic cable is the extension length of the elastic cable from its initial state to after the second flexible protective net is closed.

[0085] In this embodiment, when a debris flow arrives, the liquid in the debris flow first continuously impacts the flexible energy dissipation sleeve 202, thereby reducing the impact force of the debris flow.

[0086] Then, by setting up two sets of flexible protective nets, it can effectively intercept coarse-particle gravel and other solid impurities, thereby playing the roles of energy dissipation, interception, and drainage, and thus playing the role of regulating sediment. Compared with solid gravity dams, it has better stress conditions, saves materials, is easy to construct, has a good rock-blocking and drainage effect, and through the use of flexible energy dissipation sleeves, it effectively reduces the probability of damage to the flexible protective nets.

[0087] In practical applications, after the debris flow impact force is reduced, the debris flow passes through two sets of flexible protective nets in sequence. First, under the impact of the debris flow, when the impact force causes the elastic cable of the elastic cable mechanism to undergo elastic deformation, the elastic cable continues to extend until the second flexible protective net is completely attached to the ground, presenting a closed state (the force acting on the second flexible protective net to pull the elastic cable is called the closing force), thereby playing the roles of energy dissipation, interception, and diversion, and thus playing the role of regulating the sediment.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An interception and protection device for preventing and controlling debris flow geological disasters, characterized in that, include, An energy dissipator is installed in front of the flexible protective netting. A flexible protective net is located on one side of the energy dissipator. The energy dissipator and the flexible protective net located on one side of it form a double-layer flexible interception and protection device. The energy dissipators are arranged in multiple groups and are evenly distributed along the transverse direction of the base. The energy dissipator includes a mounting shaft. The mounting shaft is made of stainless steel and is hollow. The mounting shaft is provided with at least two sets of clamping clamps. It is mounted on the mounting shaft using high-strength bolts. Furthermore, rotating washers are installed inside the tension clamps. Furthermore, a flexible energy dissipation sleeve is provided between the upper and lower sets of rotating pads to connect them, making them an integrated unit.

2. The interception and protection device for debris flow geological disaster prevention and control according to claim 1, characterized in that, The flexible protective netting includes a truss. The truss is equipped with at least three sets of mounting seats. The ear plates of the mounting base are connected to the ear plates of the first support frame and the second support frame by high-strength fastening bolts.

3. The interception and protection device for debris flow geological disaster prevention and control according to claim 2, characterized in that, The first support frame and the second support frame are arranged in a triangle. Clamping plates connected to the end faces of the first and second support frames located away from the mounting base are provided thereon. And the ear plate is connected by a hinged connector. The ear plate is disposed on the support plate, and the ear plate and the support plate are integrally disposed.

4. The interception and protection device for debris flow geological disaster prevention and control according to claim 3, characterized in that, The support plate is equipped with stainless steel beams.

5. The interception and protection device for debris flow geological disaster prevention and control according to claim 4, characterized in that, A first flexible protective net is installed on the stainless steel beam and is fixedly connected to it. Furthermore, the first flexible protective net is connected to the second flexible protective net via steel bolts. The second flexible protective net and the first flexible protective net are set at an angle.

6. The interception and protection device for debris flow geological disaster prevention and control according to claim 5, characterized in that, The stainless steel beam and the second flexible protective net are connected by an elastic cable mechanism.

7. The interception and protection device for debris flow geological disaster prevention and control according to claim 5, characterized in that, At least two sets of positioning holes are provided on both the stainless steel beam and the second flexible protective net frame. Furthermore, a tensioning connector is installed inside the positioning hole. The tensioning connector includes an outer bushing integrally formed therewith.

8. The interception and protection device for debris flow geological disaster prevention and control according to claim 7, characterized in that, One end of the outer bushing extends out of the mounting base of the tensioning connector. And it passes through the fastening connecting sleeve, The fastening sleeve is flared in shape. The inner wall of the fastening sleeve is fitted with a tensioning connector by high-strength bolts. Furthermore, the tensioning connector includes three sets of inclined connecting frames. The connecting bracket extends into the snap-fit ​​groove on the inner wall of the fastening connecting sleeve for use and for snap-fit ​​connection.

9. The interception and protection device for debris flow geological disaster prevention and control according to claim 8, characterized in that, The end face of the tensioning connector away from the connecting frame is provided with a clamping sleeve integrated therewith for clamping the elastic cable; A clamping sleeve, integrally formed with the fastening connecting sleeve, is provided on the inner wall of the outlet end of the fastening connecting sleeve. This allows multiple sets of elastic cables to extend into the clamping sleeve, be clamped by the clamping sleeve, and then extend into the outer bushing that is integrally formed with the fastening connecting sleeve.

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