Debris flow blocking structure

Abstract

The debris flow blocking structure comprises a plurality of blocking structure bodies, and the multiple blocking structure bodies are arranged in a ditch body of a debris flow ditch at intervals in the first direction; the blocking structure body comprises multiple steel pipe piles, a first protective net and connecting steel pipes, the multiple steel pipe piles are arranged at intervals in the first direction and the second direction, and the steel pipe piles are fixedly connected with a covering layer in the ditch body and partially exposed out of the upper surface of the covering layer; the first protective net is laid on the tops of the multiple steel pipe piles, and the connecting steel pipes are located on the top of the first protective net and connected with at least part of the adjacent steel pipe piles. The first direction is the extension direction of the debris flow gully, and the second direction is the width direction of the debris flow gully. The debris flow blocking structure can achieve the effects of restraining starting of debris flow and reducing the debris flow risk through simple construction tools and a small amount of building materials.

Description

Technical Field

[0001] The present application relates to the technical field of debris flow ditch control engineering, and in particular to a debris flow blocking structure. Background Art

[0002] my country is a country prone to frequent geological disasters, with debris flows being a major form. Debris flow control typically involves various methods, such as dams and retaining walls. However, when encountering areas with protected areas downstream, debris flow development areas are often located in steep ravines with poor accessibility. In these situations, transporting equipment and materials is difficult. Furthermore, constructing access roads can cause secondary damage to the natural environment, and the control process can trigger other geological hazards. This is a common problem in geological disaster control. Therefore, how to control small debris flow gullies with poor accessibility in the control area is a pressing issue. Utility Model Content

[0003] An embodiment of the present application provides a debris flow blocking structure, which can restrain the initiation of debris flow and reduce the risk of debris flow with simple construction tools and a small amount of building materials.

[0004] The debris flow retaining structure provided in the embodiment of the present application includes a plurality of retaining structure bodies, and the plurality of retaining structure bodies are arranged at intervals along a first direction in the ditch body of the debris flow ditch; the retaining structure body includes steel pipe piles, a first protective net and connecting steel pipes, and the number of the steel pipe piles is multiple, and the plurality of the steel pipe piles are arranged at intervals along the first direction and the second direction, and the steel pipe piles are fixedly connected to the covering layer in the ditch body and partially exposed on the upper surface of the covering layer; the first protective net is laid on the top of the plurality of the steel pipe piles, and the connecting steel pipe is located on the top of the first protective net, and the connecting steel pipe connects at least some of the adjacent steel pipe piles; the first direction is the extension direction of the debris flow ditch, and the second direction is the width direction of the debris flow ditch.

[0005] In addition, the debris flow blocking structure provided in the embodiments of the present application may also have the following additional technical features:

[0006] In an optional solution, the retaining structure body also includes a passive protective net, and the number of the passive protective nets is one or more. The length direction of the passive protective net extends along the second direction and is located between multiple steel pipe piles. The bottom of the passive protective net is fixedly connected to the steel pipe piles through steel wire ropes, and the two sides are fixed to the ditch body of the debris flow ditch through anchor bars. The height of the passive protective net is 1 to 2 meters.

[0007] In an optional solution, the multiple steel pipe piles arranged along the second direction are defined as a row of steel pipe piles, and the retaining structure body includes at least three rows of steel pipe piles, and the distance between two adjacent steel pipe piles in the same row is smaller than the distance between the steel pipe piles in two adjacent rows; the passive protection net is located on the upstream side of the steel pipe piles in the same row.

[0008] In an optional solution, the pile diameter of the steel pipe pile is 110 mm, the depth of the steel pipe pile buried in the covering layer is not less than 6 m, and the height exposed on the upper surface of the covering layer is 0.5 m; the steel pipe pile includes a steel pipe section and a non-steel pipe section, the non-steel pipe section is located at the lower part of the steel pipe pile and has a preset length, and the non-steel pipe section is used to enhance the anchoring force between the pile body of the steel pipe pile and the covering layer.

[0009] In an optional solution, a plurality of steel bars are provided inside the steel pipe pile and grouting is performed for sealing. A plurality of slurry diffusion holes are provided at intervals on the side wall of the steel pipe section, and the aperture of the slurry diffusion holes is 2 cm.

[0010] The beneficial effects of the embodiments of the present application are:

[0011] The debris flow prevention structure in the embodiment of the present application utilizes multiple steel pipe piles arranged within the debris flow ditch, which are then connected via a first protective net and connecting steel pipes to form an integrated steel pipe pile structure. This prevents the initiation of debris flows and reduces the risk of debris flow initiation. This debris flow prevention structure is simple in construction and requires minimal materials. It can be constructed using small drilling equipment, minimizing damage to the surrounding environment caused by the transportation of materials and equipment. The treated debris flow ditch can also maintain its original ecological environment.

[0012] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the plan layout of the debris flow barrier structure provided for this application;

[0014] Figure 2 for Figure 1 A schematic diagram of the transverse cross-sectional structure of a single retaining structure body;

[0015] Figure 3 for Figure 1 Schematic diagram of the longitudinal cross-section of a single retaining structure body.

[0016] Reference numerals: debris flow ditch 1, steel pipe pile 2, first protective net 3, connecting steel pipe 4, covering layer 5, passive protective net 6, anchor bar 7.

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0018] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0019] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0021] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0022] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0023] like Figure 1-3 As shown, an embodiment of the present application provides a debris flow blocking structure, which includes a plurality of blocking structure bodies, which are arranged at intervals along a first direction in the ditch body of the debris flow ditch 1. Generally speaking, the distance between two adjacent blocking structure bodies can be maintained at about 2m. By distributing a plurality of blocking structure bodies in the ditch body in a dispersed manner, the initiation of debris flow can be effectively restricted, thereby reducing the risk of debris flow.

[0024] Specifically, the retaining structure body includes steel pipe piles 2, a first protective net 3 and a connecting steel pipe 4. There are multiple steel pipe piles 2, and the multiple steel pipe piles 2 are arranged at intervals along the first direction and the second direction (the first direction is the extension direction of the debris flow ditch 1, and the second direction is the width direction of the debris flow ditch 1). The steel pipe piles 2 are fixedly connected to the covering layer 5 in the ditch body and partially exposed on the upper surface of the covering layer 5; the first protective net 3 is laid on the top of the multiple steel pipe piles 2, and the connecting steel pipe 4 is located on the top of the first protective net 3, and the connecting steel pipe 4 connects at least part of the adjacent steel pipe piles 2. Specifically, after the pile tops of the steel pipe piles 2 are covered with the first protective net 3, they are connected in the longitudinal and transverse directions using connecting steel pipes 4 of the same diameter to enhance the joint force effect between them. The steel pipes are pressed on the upper part of the protective net and fixed with plates such as steel strands.

[0025] In this embodiment, the debris flow barrier structure comprises multiple steel pipe piles 2 arranged within a debris flow ditch 1, which are then connected via a first protective net 3 and connecting steel pipes 4 to form a single steel pipe pile structure. This structure prevents the initiation of debris flows and reduces the risk of initiation. This debris flow barrier structure is simple in construction and requires minimal materials. Construction can be performed using small drilling equipment, minimizing environmental damage caused by the transportation of materials and equipment. After treatment, the debris flow ditch 1 can essentially maintain its original ecological environment.

[0026] like Figure 1-3 As shown, in one specific embodiment, the retaining structure body further includes one or more passive protective nets 6. The length of the passive protective nets 6 extends along the second direction and is located between the multiple steel pipe piles 2. The bottom of the passive protective nets 6 is fixedly connected to the steel pipe piles 2 via steel strands, and the sides are fixed to the ditch body of the debris flow ditch 1 via anchor bars 7. The height of the passive protective nets 6 is 1 to 2 meters. The passive protective nets 6 serve to block slag but not water, thus reducing the flow rate of the debris flow while effectively reducing the stress on the retaining structure, ensuring the retaining effect.

[0027] like Figure 1-3 As shown, in a specific embodiment, if a plurality of steel pipe piles 2 arranged along the second direction are defined as a row of steel pipe piles 2, the retaining structure body includes at least three rows of steel pipe piles 2, and the distance between two adjacent steel pipe piles 2 in the same row is smaller than the distance between two adjacent rows of steel pipe piles 2; the passive protection net 6 is located on the upstream side of the same row of steel pipe piles 2, and the passive protection net 6 arranged on the upstream side of the steel pipe piles 2 can be supported by the steel pipe piles 2, thereby reducing deformation or displacement caused by debris flow erosion.

[0028] In one specific embodiment, the steel pipe pile 2 is embedded in the overburden 5 to a depth of no less than 6 meters and is exposed above the upper surface of the overburden 5 to a height of 0.5 meters. The steel pipe pile 2 comprises a steel pipe section and a non-steel pipe section. The non-steel pipe section is located at the bottom of the steel pipe pile 2 and has a predetermined length. The non-steel pipe section is used to enhance the anchoring force between the pile body and the overburden 5. Furthermore, the steel pipe pile 2 is internally provided with multiple steel bars and grouted. The sidewalls of the steel pipe section are spaced apart with multiple slurry diffusion holes, each with a diameter of 2 cm.

[0029] Specifically, the steel pipe pile 2 has a diameter of 110 mm and is inserted with three 25 mm diameter steel bars. Grouting is applied to the steel pipe sections. Grouting holes are installed in the steel pipe at intervals of 0.5 m, with a diameter of approximately 2 cm. The bottom 1 m of the hole is free of steel pipe to enhance the anchoring force between the pile 2 and the overburden 5.

[0030] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A debris flow blocking structure, characterized in that: It comprises a plurality of retaining structure bodies, which are arranged at intervals along a first direction in the ditch body of the debris flow ditch; the retaining structure body comprises steel pipe piles, a first protective net and connecting steel pipes, and the number of the steel pipe piles is multiple, and the plurality of the steel pipe piles are arranged at intervals along a first direction and a second direction, and the steel pipe piles are fixedly connected to the covering layer in the ditch body and partially exposed on the upper surface of the covering layer; the first protective net is laid on the top of the plurality of the steel pipe piles, the connecting steel pipe is located on the top of the first protective net, and the connecting steel pipe connects at least part of the adjacent steel pipe piles; the first direction is the extension direction of the debris flow ditch, and the second direction is the width direction of the debris flow ditch.

2. The debris flow blocking structure according to claim 1, characterized in that: The retaining structure body also includes a passive protection net, and the number of the passive protection nets is one or more. The length direction of the passive protection net extends along the second direction and is located between the multiple steel pipe piles. The bottom of the passive protection net is fixedly connected to the steel pipe piles through steel wire ropes, and the two sides are fixed to the ditch body of the debris flow ditch through anchor bars. The height of the passive protection net is 1 to 2 meters.

3. The debris flow blocking structure according to claim 2, characterized in that: The multiple steel pipe piles arranged along the second direction are defined as a row of steel pipe piles, then the retaining structure body includes at least three rows of steel pipe piles, and the distance between two adjacent steel pipe piles in the same row is smaller than the distance between the steel pipe piles in two adjacent rows; the passive protection net is located on the upstream side of the steel pipe piles in the same row.

4. The debris flow blocking structure according to any one of claims 1 to 3, characterized in that: The diameter of the steel pipe pile is 110 mm, the depth of the steel pipe pile buried in the covering layer is not less than 6 m, and the height exposed on the upper surface of the covering layer is 0.5 m; the steel pipe pile includes a steel pipe section and a non-steel pipe section, the non-steel pipe section is located at the lower part of the steel pipe pile and has a preset length, and the non-steel pipe section is used to enhance the anchoring force between the pile body of the steel pipe pile and the covering layer.

5. The debris flow blocking structure according to claim 4, characterized in that: The interior of the steel pipe pile is provided with a plurality of steel bars and is grout-sealed. The side wall of the steel pipe section is provided with a plurality of slurry diffusion holes at intervals, and the aperture of the slurry diffusion holes is 2 cm.

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