Underground excavation large-section electric power tunnel construction supporting system

Abstract

The utility model discloses an underground excavation large-section electric power tunnel construction supporting system, particularly relates to the technical field of tunnel construction supporting, and comprises a supporting assembly for electric power tunnel construction protection. The supporting assembly comprises a vault piece, a partition piece is installed at the top of the vault piece, a partition cavity is formed in the partition piece, a plurality of through holes are formed in the top of the partition piece, and the through holes communicate with the partition cavity; a plurality of liquid outlet holes are formed in the bottoms of the two ends of the partition piece and communicate with the partition cavity. The top of the vault piece is shielded and protected through the partition piece, water is prevented from permeating a soil layer and making contact with the vault piece to cause corrosion damage, meanwhile, by means of communication between the through hole and the partition cavity, the water can flow into the partition cavity through the through hole and then is discharged through the liquid outlet communicated with the partition cavity, and therefore the water can be guided and discharged; impurities such as water are prevented from corroding and damaging the supporting assembly, and the using effect of the supporting assembly is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction support, in particular to a construction support system for a dark-digging large-section electric power tunnel. Background Art

[0002] The construction support system of a large-section underground power tunnel usually includes a variety of technologies and methods to ensure the stability and safety of the tunnel during construction. The construction support system of a large-section underground power tunnel is a complex engineering problem. It is necessary to comprehensively consider geological conditions, tunnel size, construction methods, safety requirements and other factors, and adopt appropriate technologies and measures to ensure the safety of construction and the stability of the tunnel.

[0003] As shown in the application document with the prior art announcement number CN206503603U, it includes surrounding rock, shotcrete layer and multiple prestressed energy release anchor rods. When the prestressed energy release anchor rods are subjected to a predetermined stress value, the prestressed anchor rods can slide laterally for a certain distance according to the rock burst prevention requirements. The shotcrete layer is formed on the cavern surface of the surrounding rock. The shotcrete layer is provided with multiple grooves arranged at intervals. One end of the prestressed energy release anchor rod is buried in the surrounding rock along the radial direction of the surrounding rock, and the other end of the prestressed energy release anchor rod is located in the shotcrete layer. This support system can better ensure the stability of the cavern and the safety of construction under rock burst conditions in the tunnel.

[0004] However, the above technical solution cannot effectively block impurities such as water in the soil layer, which causes impurities such as water to adhere to and corrode the support system, thereby affecting the performance and stability of the technical solution. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a support system for the construction of a dark-excavated large-section power tunnel, in which the top of the arch member is shielded and protected by a partition to prevent water from penetrating the soil layer and contacting the arch member to cause corrosion damage. At the same time, by means of the connection between the through hole and the partition cavity, water can flow into the interior of the partition cavity through the through hole and then be discharged through the liquid outlet hole connected to the partition cavity. In this way, the water can be guided and discharged, and the corrosion and damage of the support components by impurities such as water are prevented, thereby ensuring the use effect of the support components, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dark excavation large-section power tunnel construction support system, including a support assembly for power tunnel construction protection;

[0007] The support assembly includes an arch member, a partition is installed on the top of the arch member, a partition cavity is opened inside the partition member, and a plurality of through holes are opened on the top of the partition member, and the through holes are connected with the partition cavity;

[0008] A plurality of liquid outlet holes are provided at the bottom of both ends of the partition, and the liquid outlet holes are connected with the partition cavity. The partition is used to shield and protect the top of the arch member to prevent water from penetrating the soil layer and contacting the arch member to cause corrosion damage. At the same time, by virtue of the connection between the through hole and the partition cavity, water can flow into the partition cavity through the through hole and then be discharged through the liquid outlet holes connected with the partition cavity. In this way, the water can be guided and discharged to prevent water and other impurities from corroding and damaging the support components.

[0009] In a preferred embodiment, a plurality of support columns are installed inside the partition cavity, and the plurality of support columns are evenly spaced apart. Anchor rods are installed on the top of the support columns, and the top of the anchor rods penetrates the partition and extends to the outside of the partition. The plurality of support columns installed in the partition cavity can support the interior of the partition cavity, thereby ensuring the stability of the partition and avoiding concave deformation. The provision of the anchor rods can enhance the connection stability and tightness between the partition and the soil layer and avoid loosening.

[0010] In a preferred embodiment, a mesh plate is installed on the outside of the top of the partition, and the mesh plate is sleeved on the outside of multiple anchor rods. Through the setting of the mesh plate, particulate debris can be blocked to prevent particulate debris from falling into the partition cavity through the through hole and causing pollution.

[0011] In a preferred embodiment, fixing members are provided at the bottom of both ends of the arch member, and the top of the fixing member is fixed to the bottom of one end of the arch member. By setting the fixing members, the arch member can be supported and fixed to ensure the supporting strength and stability of the arch member.

[0012] In a preferred embodiment, a plurality of inclined rods are installed on the side close to the top ends of the two fixing members, and the plurality of inclined rods are evenly spaced apart. The end of the inclined rod away from the fixing member is fixed to the bottom of the arch member. By setting up the plurality of inclined rods, the arch member can be supported to ensure the supporting strength and stability of the arch member, thereby preventing the arch member from being deformed and damaged due to excessive force.

[0013] In a preferred embodiment, the multiple through holes are evenly spaced apart, and the multiple liquid outlet holes are evenly spaced apart. By setting the multiple through holes, water can be collected and guided over a large range, while the setting of the multiple liquid outlet holes can drain the water quickly and effectively, avoiding overflow caused by water accumulation.

[0014] Technical effects and advantages of the utility model:

[0015] The top of the arch is shielded and protected by the partition to prevent water from penetrating the soil layer and contacting the arch to cause corrosion damage. At the same time, by virtue of the connection between the through hole and the partition cavity, water can flow into the partition cavity through the through hole and then be discharged through the liquid outlet hole connected to the partition cavity. In this way, the water can be guided and discharged to prevent water and other impurities from corroding and damaging the support components, thereby ensuring the use effect of the support components.

[0016] By setting the mesh plate, the particle debris can be blocked to prevent the particle debris from falling into the separation cavity through the through hole and causing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a front view of the separator of the utility model;

[0019] Figure 3 This is a front view of the arch member of the utility model;

[0020] Figure 4 It is a cross-sectional view of the separator of the utility model;

[0021] Figure 5 This is a front view of the support column of the utility model.

[0022] The reference numerals in the drawings are: 1, dome member; 2, partition member; 3, through hole; 4, partition chamber; 5, liquid outlet; 6, support column; 7, anchor rod; 8, mesh plate; 9, fixing member; 10, diagonal rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Refer to the instruction manual Figure 1-5 , the utility model provides a construction support system for a dark-digging large-section electric power tunnel, including a support assembly for electric power tunnel construction protection;

[0025] In order to facilitate the isolation of impurities such as water in the soil layer, Figure 1-4As shown, the support assembly includes a dome member 1, a partition member 2 is installed on the top of the dome member 1, a partition cavity 4 is opened inside the partition member 2, a plurality of through holes 3 are opened on the top of the partition member 2, and the through holes 3 are connected with the partition cavity 4; a plurality of liquid outlet holes 5 are opened at the bottom of both ends of the partition member 2, and the liquid outlet holes 5 are connected with the partition cavity 4.

[0026] In order to enhance the stability of the partition 2 and enhance the tightness of the connection between the utility model and the soil layer, as Figure 1 , 2 As shown in Figure 5, a plurality of support columns 6 are installed inside the partition cavity 4, and the plurality of support columns 6 are evenly spaced apart. An anchor rod 7 is installed on the top of the support column 6, and the top of the anchor rod 7 penetrates the partition 2 and extends to the outside of the partition 2. By installing a plurality of support columns 6 in the partition cavity 4, the interior of the partition cavity 4 can be supported, thereby ensuring the stability of the partition 2 and avoiding concave deformation. The provision of the anchor rod 7 can enhance the connection stability and tightness between the partition 2 and the soil layer and avoid loosening.

[0027] In order to facilitate the isolation of particulate debris, such as Figure 1 As shown, a mesh plate 8 is installed on the outside of the top of the partition 2, and the mesh plate 8 is sleeved on the outside of multiple anchor rods 7. Through the setting of the mesh plate 8, particulate debris can be blocked to prevent particulate debris from falling into the partition cavity 4 through the through hole 3 and causing pollution.

[0028] In order to enhance the support strength and stability of the utility model, Figure 1-3 As shown, fixing members 9 are provided at the bottom of both ends of the arch member 1, and the top of the fixing member 9 is fixed to the bottom of one end of the arch member 1. Through the setting of the fixing member 9, the arch member 1 can be supported and fixed to ensure the supporting strength and stability of the arch member 1. A plurality of inclined rods 10 are installed on the side close to the tops of the two fixing members 9, and the plurality of inclined rods 10 are evenly spaced. The end of the inclined rod 10 away from the fixing member 9 is fixed to the bottom of the arch member 1. Through the setting of the plurality of inclined rods 10, the arch member 1 can be supported to ensure the supporting strength and stability of the arch member 1, and the arch member 1 can be prevented from being deformed and damaged due to excessive force.

[0029] In order to enhance the collection and discharge efficiency of impurities such as water, Figure 2 and 4 As shown, the multiple through holes 3 are evenly spaced apart, and the multiple liquid outlet holes 5 are evenly spaced apart. By setting the multiple through holes 3, water can be collected and guided over a large range, while the setting of the multiple liquid outlet holes 5 can quickly and effectively discharge water, thus avoiding overflow caused by water accumulation.

[0030] By installing the partition 2 on the top of the arch member 1, the top of the arch member 1 can be shielded and protected to prevent water from penetrating the soil layer and contacting the arch member 1 to cause corrosion damage, thereby ensuring the performance and support strength of the arch member 1. At the same time, by means of the connection between the through hole 3 and the partition chamber 4, water can flow into the partition chamber 4 through the through hole 3 and then be discharged through the liquid outlet 5 connected to the partition chamber 4. In this way, the water can be guided and discharged, preventing water and other impurities from corroding and damaging the support components, thereby ensuring the use effect of the support components.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A construction support system for a dark-excavated large-section electric power tunnel, characterized by: It includes support components for protection of power tunnel construction; The support assembly comprises an arch member (1), a partition member (2) is installed on the top of the arch member (1), a partition cavity (4) is provided inside the partition member (2), a plurality of through holes (3) are provided on the top of the partition member (2), and the through holes (3) are connected to the partition cavity (4); A plurality of liquid outlet holes (5) are provided at the bottom of both ends of the separator (2), and the liquid outlet holes (5) are connected to the separation cavity (4).

2. A construction support system for a dark-excavated large-section electric power tunnel according to claim 1, characterized in that: A plurality of support columns (6) are installed inside the partition cavity (4), and the plurality of support columns (6) are evenly spaced and distributed. An anchor rod (7) is installed at the top end of the support column (6), and the top end of the anchor rod (7) passes through the partition (2) and extends to the outside of the partition (2).

3. A construction support system for a dark-excavated large-section electric power tunnel according to claim 2, characterized in that: A mesh plate (8) is installed on the outside of the top end of the separator (2), and the mesh plate (8) is sleeved on the outside of the plurality of anchor rods (7).

4. A construction support system for a dark-excavated large-section electric power tunnel according to claim 1, characterized in that: Fixing members (9) are provided at the bottom of both ends of the arch member (1), and the top end of the fixing member (9) is fixed to the bottom of one end of the arch member (1).

5. A construction support system for a dark-excavated large-section electric power tunnel according to claim 4, characterized in that: A plurality of inclined rods (10) are installed on the sides of the two fixing members (9) that are close to each other at the top ends. The plurality of inclined rods (10) are evenly spaced and distributed. One end of the inclined rod (10) that is away from the fixing member (9) is fixed to the bottom of the arch member (1).

6. A construction support system for a dark-excavated large-section electric power tunnel according to claim 1, characterized in that: The plurality of through holes (3) are evenly spaced and distributed, and the plurality of liquid outlet holes (5) are evenly spaced and distributed.

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