Supporting structure for transforming energy storage space of underground abandoned roadway

Abstract

The utility model discloses an underground abandoned roadway energy storage space transformation supporting structure. A bottom sealing grouting layer is fixedly arranged on the bottom end face of a roadway body. A heat preservation support covering the surface of the whole roadway body is arranged at the top end of the bottom sealing grouting layer. Pipe seam type anchor rods are connected to the positions, corresponding to the anchor rod holes, of the heat preservation support, and anchor cables are connected to the positions, corresponding to the anchor cable holes, of the heat preservation support; a high-strength supporting layer is supported on the inner end face of the heat preservation support and comprises a plurality of steel pipe concrete supports matched with the arch structure of the heat preservation support. The bottom end face of the heat preservation support and the bottom end face of the concrete filled steel tube support are pressed on the bottom sealing grouting layer. Through the arrangement of the bottom sealing grouting layer, the heat preservation support and the high-strength supporting layer, a high-strength composite supporting system is constructed on the surrounding rock of the roadway, after the roadway is blocked, the heat preservation performance and the leakproofness of the roadway are improved, safe and reliable supporting under the abandoned roadway environment is achieved, and the design requirement for transforming the abandoned roadway into an energy storage space is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of abandoned mine tunnel support structures, and in particular relates to an abandoned underground tunnel energy storage space transformation support structure. Background Art

[0002] my country has rich mineral resources, and the number of tunnels under the mines is huge and crisscrossed. With the continuous development of technology and the reuse of resources, people gradually realize that the reuse potential of abandoned tunnels is huge, so it is particularly important to do a good job in the reuse of abandoned tunnels.

[0003] The traditional way to deal with abandoned underground tunnels is to build closed spaces and directly block them. This not only increases the workload and cost, but also wastes resources. Therefore, transforming abandoned underground tunnels into energy storage spaces for reuse is the main trend in the current transformation of abandoned tunnels. When transforming abandoned underground tunnels into energy storage spaces, the surface of the abandoned tunnels requires higher support and thermal insulation performance.

[0004] However, when abandoned underground tunnels are currently converted into energy storage spaces, the original tunnel anchor mesh cable support design of the abandoned tunnels cannot meet the high-strength support and thermal insulation requirements of the abandoned tunnels converted into energy storage spaces.

[0005] Based on this, the present application proposes a support structure for the transformation of energy storage space in abandoned underground tunnels. The structure can transform the space of the abandoned mine tunnel surrounding rock, and perform composite support and reinforcement treatment on the surrounding rock to meet the long-term bearing requirements, so that the abandoned tunnel space meets the energy storage requirements. Through the setting of a bottom grouting layer, a thermal insulation bracket, and a high-strength support layer, a high-strength composite support system is constructed in the tunnel surrounding rock. After the tunnel is sealed, the thermal insulation and airtightness of the tunnel are improved, thereby achieving safe and reliable support in the abandoned tunnel environment, which meets the design requirements for transforming abandoned tunnels into energy storage spaces. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a support structure for transforming energy storage space in abandoned underground tunnels.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The support structure for the transformation of the energy storage space of the abandoned underground tunnel includes the tunnel body, anchor holes drilled on the top of the tunnel surrounding rock and the tunnel wall, and anchor cable holes drilled on the top of the tunnel surrounding rock;

[0009] A bottom sealing grouting layer is fixedly arranged on the bottom end surface of the tunnel body;

[0010] A heat preservation bracket covering the entire surface of the tunnel body is arranged at the top of the bottom sealing grouting layer; a pipe seam type anchor rod is connected to the position of the heat preservation bracket corresponding to the anchor rod hole, and the end of the pipe seam type anchor rod is anchored in the corresponding anchor rod hole; an anchor cable is connected to the position of the heat preservation bracket corresponding to the anchor cable hole, and the end of the anchor cable is anchored in the corresponding anchor cable hole;

[0011] A high-strength support layer is supported on the inner end surface of the thermal insulation support, and the high-strength support layer includes a plurality of steel tube concrete supports distributed along the length direction of the tunnel body adapted to the arch structure of the thermal insulation support;

[0012] The bottom end surface of the thermal insulation support and the bottom end surface of the steel tube concrete support are both pressed tightly on the bottom sealing grouting layer.

[0013] Preferably, the bottom sealing grouting layer comprises a baffle plate adapted to the bottom surface of the tunnel body, and the bottom end surface of the baffle plate is connected to the bottom surface of the tunnel body by pouring a concrete leveling layer formed by foamed concrete;

[0014] The baffle plate is provided with grouting holes for pouring foamed concrete.

[0015] Preferably, the insulation support includes two layers of inner and outer steel meshes adapted to the cross-sectional shape of the tunnel body, an insulation layer is formed between the two layers of steel meshes by pouring foamed concrete, and the steel mesh on the outer layer is in close contact with the surface of the tunnel body.

[0016] Preferably, the thickness of the thermal insulation layer is 5 to 10 cm.

[0017] Preferably, the steel tube concrete support comprises a plurality of steel tubes that can be connected to form a supporting pipeline that is adapted to the shape of the inner end surface of the thermal insulation support, and adjacent steel tubes in the steel tube concrete support are connected by sleeves;

[0018] A blocking bottom plate is arranged at the bottom end of the steel tube concrete support, and concrete is poured in the steel tube concrete support.

[0019] Preferably, the concrete poured into the steel tube concrete support is C40 concrete.

[0020] Preferably, the casing comprises two semi-ring steel plates capable of synthesizing a complete tubular structure, and a connecting plate is provided at the edge of the semi-ring steel plates;

[0021] The connecting plate is provided with bolt holes;

[0022] After the two half-ring steel plates are combined into a casing, the corresponding connecting plates are placed against each other, and fastening bolts are arranged in the corresponding threaded holes.

[0023] Preferably, the outer surface of the steel tube concrete support is coated with zinc-rich epoxy anti-rust primer.

[0024] The beneficial effects of the utility model are:

[0025] (1) The utility model transforms the surrounding rock of abandoned mine tunnels and performs composite support reinforcement treatment on the surrounding rock to meet long-term bearing requirements and enable the abandoned tunnel space to meet energy storage requirements. By setting a bottom sealing grouting layer, a thermal insulation bracket, and a high-strength support layer, a high-strength composite support system is constructed in the tunnel surrounding rock. After the tunnel is blocked, the thermal insulation and airtightness of the tunnel are improved, and safe and reliable support is achieved in the abandoned tunnel environment, which meets the design requirements for transforming abandoned tunnels into energy storage spaces.

[0026] (2) The concrete leveling layer and the thermal insulation layer in the present invention are both made of foamed concrete, which has the advantages of being lightweight and having good thermal insulation properties. After the tunnel is blocked, the sealing effect of the abandoned tunnel is enhanced, and the thermal insulation performance and airtightness of the tunnel are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0028] Figure 1 This is a schematic front view of the structure of the utility model for transforming the support structure of the abandoned underground tunnel energy storage space;

[0029] Figure 2 It is a schematic top view of the structure of the support structure for transforming the energy storage space of an abandoned underground tunnel according to the utility model;

[0030] Figure 3 This is a schematic diagram of the structure when the sleeve in the utility model is a straight sleeve Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the structure when the sleeve in the utility model is a straight sleeve Figure 2 ;

[0032] in:

[0033] 1- bottom grouting layer, 11- barrier plate, 12- concrete leveling layer, 13- grouting hole;

[0034] 2-insulation support, 21-pipe seam anchor rod, 22-anchor cable, 23-steel mesh, 24-insulation layer;

[0035] 3-steel tube concrete support, 31-steel tube, 32-casing, 321-semi-ring steel plate, 322-connecting plate, 323-bolt hole, 324-fastening bolt, 33-blocking bottom plate;

[0036] 4-Pressure relief deformation hole. DETAILED DESCRIPTION

[0037] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0040] In the present utility model, terms such as "connected" and "connection" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meaning of the above terms in the present utility model can be determined according to specific circumstances, and it cannot be understood as a limitation of the present utility model.

[0041] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0042] like Figure 1-Figure 2 As shown, the support structure for the transformation of the energy storage space of the abandoned underground tunnel includes the tunnel body, anchor holes drilled on the top of the tunnel surrounding rock and the tunnel side, and anchor cable holes drilled on the top of the tunnel surrounding rock;

[0043] A bottom sealing grouting layer 1 is fixedly arranged on the bottom end surface of the tunnel body;

[0044] The top of the bottom sealing grouting layer 1 is provided with a heat preservation bracket 2 covering the entire surface of the tunnel body; a pipe seam anchor 21 is connected to the position of the heat preservation bracket 2 corresponding to the anchor hole, and the end of the pipe seam anchor 21 is anchored in the corresponding anchor hole; an anchor cable 22 is connected to the position of the heat preservation bracket 2 corresponding to the anchor cable hole, and the end of the anchor cable 22 is anchored in the corresponding anchor cable hole;

[0045] A high-strength support layer is supported on the inner end surface of the thermal insulation support 2, and the high-strength support layer includes a plurality of steel tube concrete supports 3 distributed along the length direction of the tunnel body and adapted to the arch structure of the thermal insulation support 2;

[0046] The bottom end surface of the thermal insulation support 2 and the bottom end surface of the steel tube concrete support 3 are both pressed tightly on the bottom sealing grouting layer 1.

[0047] Preferably, the bottom sealing grouting layer 1 comprises a baffle plate 11 adapted to the bottom surface of the tunnel body, and the bottom end surface of the baffle plate 11 is connected to the bottom surface of the tunnel body by pouring a concrete leveling layer 12 formed by foamed concrete; the foamed concrete can be quickly leveled on the tunnel bottom plate, and has strong adhesion performance and perfectly fits the baffle plate 11;

[0048] The baffle plate 11 is provided with grouting holes 13 for pouring foamed concrete.

[0049] In the present application, the barrier plate 11 is prefabricated and can be spliced ​​together for easy transportation. The material of the barrier plate 11 can be a wooden board or a metal board.

[0050] Preferably, the insulation support 2 includes two layers of inner and outer steel meshes 23 adapted to the cross-sectional shape of the tunnel body, and an insulation layer 24 is formed between the two layers of steel meshes 23 by pouring foamed concrete, and the outer steel mesh 23 is in close contact with the surface of the tunnel body.

[0051] The thermal insulation bracket 2 can be manufactured by using existing technology, and the specific implementation method will not be described in detail here.

[0052] Preferably, the thickness of the thermal insulation layer 24 is 5 to 10 cm. The foamed concrete of this thickness not only ensures the stability of the structure, but also avoids waste due to over-casting.

[0053] In the present application, the thermal insulation support 2 covers the entire tunnel, and the anchor cable 22 and the thermal insulation support 2 serve as active support to achieve flexible pressure relief under closed conditions, thereby improving the thermal insulation and airtightness of the tunnel.

[0054] Specifically, the hollow hole formed by the pipe-seam anchor rod 2 forms a pressure relief deformation hole 4, and the pressure relief deformation hole 4 is located in the insulation layer 24, and does not damage the steel mesh 23 on both sides of the insulation layer 24, so as to improve the adaptability of the insulation bracket 2 to deformation, and also provide a certain pressure relief space for the high-strength support of the steel tube concrete bracket 3.

[0055] Preferably, the steel tube concrete support 3 includes a plurality of steel tubes that can be connected to form a supporting pipeline that is adapted to the inner end surface shape of the thermal insulation support 2, and adjacent steel tubes 31 in the steel tube concrete support 3 are connected by a sleeve 32;

[0056] A blocking bottom plate 33 is provided at the bottom end of the steel tube concrete support 3 , and concrete is poured into the steel tube concrete support 3 .

[0057] Preferably, the concrete poured into the steel tube concrete support 3 is C40 concrete.

[0058] Preferably, the sleeve 32 includes two semi-ring steel plates 321 that can be combined into a complete tubular structure, and a connecting plate 322 is provided at the edge of the semi-ring steel plate 321;

[0059] The connecting plate 322 is provided with bolt holes 323;

[0060] After the two half-ring steel plates 321 are combined into the casing 32 , the corresponding connecting plates 322 are placed against each other, and the fastening bolts 324 are arranged in the corresponding threaded holes 323 to realize the combination of the casing 32 .

[0061] In order to adapt to the shape of the inner end surface of the thermal insulation bracket 2, the steel pipe 31 in the present application can be a straight steel pipe or an arc steel pipe, and the sleeve 32 can be a straight sleeve or an arc sleeve. The structure of the sleeve 32 when it is a straight sleeve is as follows: Figure 3-Figure 4 shown.

[0062] Preferably, the outer surface of the steel tube concrete support 3 is coated with zinc-rich epoxy anti-rust primer.

[0063] This application carries out spatial transformation of the surrounding rock of abandoned mine tunnels, and performs composite support reinforcement treatment on the surrounding rock to meet the long-term bearing requirements and make the abandoned tunnel space meet the energy storage requirements. Through the setting of the bottom sealing grouting layer 1, the thermal insulation bracket 2, and the high-strength support layer, a high-strength composite support system is constructed in the tunnel surrounding rock. After the tunnel is blocked, the thermal insulation and airtightness of the tunnel are improved, and safe and reliable support is achieved in the abandoned tunnel environment, which meets the design requirements of transforming the abandoned tunnel into an energy storage space.

[0064] Although the above describes the specific implementation mode of the utility model in combination with the accompanying drawings, it is not a limitation of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims

1. A support structure for the transformation of energy storage space in abandoned underground tunnels, including a tunnel body, anchor holes drilled on the top of the tunnel surrounding rock and the tunnel wall, and anchor cable holes drilled on the top of the tunnel surrounding rock; characterized in that: A bottom sealing grouting layer is fixedly arranged on the bottom end surface of the tunnel body; A thermal insulation bracket covering the entire surface of the tunnel body is arranged on the top of the bottom sealing grouting layer; A pipe seam anchor is connected to the position of the thermal insulation bracket corresponding to the anchor hole, and the end of the pipe seam anchor is anchored in the corresponding anchor hole. An anchor cable is connected to the position of the thermal insulation bracket corresponding to the anchor cable hole, and the end of the anchor cable is anchored in the corresponding anchor cable hole. A high-strength support layer is supported on the inner end surface of the thermal insulation support, and the high-strength support layer includes a plurality of steel tube concrete supports distributed along the length direction of the tunnel body adapted to the arch structure of the thermal insulation support; The bottom end surface of the thermal insulation support and the bottom end surface of the steel tube concrete support are both pressed tightly on the bottom sealing grouting layer.

2. The underground abandoned tunnel energy storage space transformation support structure according to claim 1 is characterized in that: The bottom sealing grouting layer includes a baffle plate adapted to the bottom surface of the tunnel body, and the bottom end surface of the baffle plate is connected to the bottom surface of the tunnel body by pouring a concrete leveling layer formed by foamed concrete; The baffle plate is provided with grouting holes for pouring foamed concrete.

3. The underground abandoned tunnel energy storage space transformation support structure according to claim 1 is characterized in that: The insulation support includes two layers of inner and outer steel meshes adapted to the cross-sectional shape of the tunnel body, an insulation layer is formed between the two layers of steel meshes by pouring foamed concrete, and the steel mesh on the outer layer is in close contact with the surface of the tunnel body.

4. The underground abandoned tunnel energy storage space transformation support structure according to claim 3 is characterized in that: The thickness of the thermal insulation layer is 5 to 10 cm.

5. The underground abandoned tunnel energy storage space transformation support structure according to claim 1 is characterized in that: The steel tube concrete support comprises a plurality of steel tubes that can be connected to form a supporting pipeline that is adapted to the shape of the inner end surface of the thermal insulation support, and adjacent steel tubes in the steel tube concrete support are connected by sleeves; A blocking bottom plate is arranged at the bottom end of the steel tube concrete support, and concrete is poured in the steel tube concrete support.

6. The underground abandoned tunnel energy storage space transformation support structure according to claim 5, characterized in that: The concrete poured into the steel tube concrete support is C40 concrete.

7. The underground abandoned tunnel energy storage space transformation support structure according to claim 5, characterized in that: The casing comprises two semi-ring steel plates capable of synthesizing a complete tubular structure, and a connecting plate is arranged at the edge of the semi-ring steel plates; The connecting plate is provided with bolt holes; After the two half-ring steel plates are combined into a casing, the corresponding connecting plates are placed against each other, and fastening bolts are arranged in the corresponding threaded holes.

8. The underground abandoned tunnel energy storage space transformation support structure according to claim 1, characterized in that: The outer surface of the steel tube concrete support is coated with zinc-rich epoxy anti-rust primer.

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