Ultrahigh target gallery structure

Abstract

The utility model discloses an ultrahigh target gallery structure, which relates to the technical field of civil engineering and comprises a trapezoidal target gallery body, a gravel drainage layer arranged at the bottom of the trapezoidal target gallery body, a toe protection wall arranged on the periphery of the bottom of the trapezoidal target gallery body, and a slope toe drainage ditch communicated with the bottom of the gravel drainage layer through a concrete cushion layer. The broken stone drainage layer is formed by laying graded broken stones according to a certain thickness, and the length and the width of the broken stone drainage layer are consistent with those of the bottom of the trapezoidal target gallery body. The gravel drainage layer is located on the lowermost layer of the bottom of the trapezoidal target gallery body, rainwater permeating from the upper portion of the trapezoidal target gallery body is drained through the gravel drainage layer, and the situation that the inner inclined side slope deforms and collapses under the action of the rainwater when the water amount is large due to rainstorm and the like is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, and more specifically to the technical field of a super-high target gallery structure. Background Art

[0002] In the construction of comprehensive emergency projects, in order to cope with emergencies, it is often necessary to design target galleries for shooting drills. The design of the target galleries must ensure sufficient height, strength, and durability. Avoid unreasonable structural design of the target galleries, which may lead to penetration or damage during shooting, making them ineffective for bullets, or excessive height.

[0003] Conventional target corridors are constructed by using tires, adding soil between the tires, and then stacking them in a certain pattern. The entire structure is made of discarded tires. Another method is to use concrete walls as supports, adding discarded tires and filling soil on both sides of the wall to form a target corridor. Another method is to take advantage of the terrain and directly use the mountain as a target corridor to block bullets. In the absence of the above conditions, if there is a need to build a target corridor:

[0004] Especially when constructing a target gallery on flat or sloping ground, and when the gallery needs to be several dozen meters high, controlling compaction is difficult. The trapezoidal step-shaped form reduces the working surface as you go up, making it difficult for machinery to reach the target. Controlling compaction becomes increasingly difficult as you go higher. This can cause the slope to tilt, shift, or even collapse under the influence of gravity and rain, losing its original bullet-stopping effect and potentially leading to safety accidents.

[0005] If the design and control of the target corridor structure is done well, it becomes an urgent problem to be solved. Utility Model Content

[0006] The purpose of this utility model is to solve the technical problems of the shooting range structure design and construction of emergency projects, and to provide an ultra-high shooting gallery structure, thereby ensuring the safety, stability and economy of the ultra-high shooting gallery, guaranteeing the construction quality and prolonging the service life.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A super-high target gallery structure comprises a trapezoidal target gallery body, a gravel drainage layer arranged at the bottom of the trapezoidal target gallery body, a footing wall arranged at the outer periphery of the bottom of the trapezoidal target gallery body, and a slope foot drainage ditch connected to the bottom of the gravel drainage layer through a concrete cushion layer.

[0009] Specifically, the gravel drainage layer is made of graded gravel laid to a certain thickness, with a length and width consistent with the bottom of the trapezoidal target corridor. Located at the bottom of the trapezoidal target corridor, it drains rainwater that seeps down from the upper part of the trapezoidal target corridor through this gravel drainage layer, preventing the inward-sloping slope from deforming and collapsing due to heavy rainfall, such as during heavy rain.

[0010] In one embodiment, the footing wall includes a mortar pad at the bottom and a concrete pour on top of the mortar pad.

[0011] Specifically, the toe walls are located in front, behind, left and right of the bottom of the super-high target corridor structure. They mainly play the role of protecting the stability of the foundation and preventing the retaining wall from being displaced or deformed under the action of weight, which would affect the stability and safety of the upper fill.

[0012] This footing wall is made of a mortar cushion layer and a concrete pouring layer. The mortar cushion layer is located at the bottom of the concrete pouring layer and provides basic support. The concrete pouring layer is located on the top of the mortar cushion layer and acts as a retaining wall.

[0013] In one embodiment, the trapezoidal target gallery body includes a trapezoidal main structure and a geotextile layer arranged at the edge of the trapezoidal main structure.

[0014] Specifically, the material of the geotextile layer is high-toughness polyspun geotextile, which is located at the edge of the trapezoidal target corridor. This geotextile is used to wrap the filled gravel soil and filled earthbags. The high toughness of the geotextile is used to enhance the crack resistance and slip resistance of the edge of the trapezoidal target corridor.

[0015] In general, high-tenacity polyester woven geotextile is selected as type B, with a laying length of L = 17.0 meters. The trapezoidal target corridor has 32 layers, the layer spacing is 0.5 meters, and the return length is L = 3.0 meters. In the actual application process, the purpose is comprehensively designed and selected based on the height, width and internal inclination angle of the trapezoidal target corridor.

[0016] High-tenacity polyester woven geotextiles should be laid horizontally, perpendicular to the slope. At outer corners, the maximum allowable gap distance is 3 cm. If the maximum gap distance is exceeded, add another layer of high-tenacity polyester woven geotextile in the gap. In the overlapped area at inner corners, ensure that the high-tenacity polyester woven geotextile is tensioned without wrinkling. The top layer of high-tenacity polyester woven geotextile should be long enough and buried under the fill to ensure that the fill provides sufficient restraint to permanently anchor the high-tenacity polyester woven geotextile.

[0017] In one embodiment, the trapezoidal main structure gradually becomes smaller from the bottom to the top, and the material of the trapezoidal main structure is reinforced soil with steel bars inside.

[0018] Specifically, reinforced soil, as an important component of the structure of this ultra-high target gallery, plays a key role in blocking bullets. On the one hand, it must ensure that the shock wave of the bullet is reduced, and on the other hand, it must ensure that the bullet will not rebound or deflect due to the rigid structural design.

[0019] The filler parameters used are as follows: Filler parameters for the reinforced area are Ф = 28.0°, C = 5kPa, and Y = 18.5kN / ㎡. Filler parameters after the reinforcement refer to the reinforced area. This design only considers the stability of the reinforced soil slope itself. The foundation fill parameters are based on the values after foundation treatment: First, strictly follow the design documents and use crushed stone soil as filler (ratio 2:8). The filler particle size should not exceed 2 / 3 of the compacted filler thickness and should not exceed 10cm. If filler (reinforced soil) that meets the requirements is selected on-site, sandy soil, gravel, crushed (gravel) stone, and other materials can be used. Silt and humus soil are strictly prohibited. When using clay as filler, construction should be carried out at an optimum moisture content of ±0.2%. Second, reinforced earth retaining walls in waterlogged areas should use a water-stable and permeable filler. Third, the filler must not contain organic materials or domestic waste. Fourthly, the backfill material behind the reinforced body shall be that specified in the Technical Specifications for Highway Roadbed Construction JTGF10-2006, and the construction shall be carried out in accordance with the corresponding construction rules.

[0020] In one embodiment, the trapezoidal main structure includes multiple layers of mixed filler that are backfilled and compacted in layers, and geotextile layers are also provided between each mixed filler layer and fixed with U-shaped nails.

[0021] Specifically, the geotextile is then laid in the corresponding layer and fixed with U-shaped nails to ensure the stability and safety of the slope soil and prevent slope instability due to overheight and mechanical compaction.

[0022] U-shaped nails are made of steel bars and are shaped into a U-shaped structure. They are mainly used to fix the geotextile layer and anchor rods in the mixed filler layer to ensure the stability and safety of the inward inclined slope.

[0023] In one embodiment, a PCV drainage pipe is provided at the edge of each mixed filler layer, and an earth bag is provided on the outside of each mixed filler layer.

[0024] Specifically, it sits atop a graded gravel drainage layer, with slope protection designed on top. The surface is designed with slope protection and PCV drainage pipes to ensure slope stability. Steel anchors are embedded in the soil. Earthbags are located around the edges of this trapezoidal main structure, primarily to mound up the soil and ensure slope stability.

[0025] In addition, PCV drainage pipes are located around the reinforced soil and arranged at regular intervals. The diameter of the PCV drainage pipe is designed according to the required drainage volume. Generally, it can be made by wrapping a permeable non-woven fabric with a PVC water pipe (50mm diameter, with plum blossom-shaped holes drilled at 30mm intervals and a diameter of 2mm).

[0026] In addition, the woven bags are filled with soil, and the soil in the woven belts is leveled, arranged in an inward-sloping pattern from bottom to top, bag by bag. Generally, every fourth bag is wrapped with a high-tenacity polyester woven geotextile with a 3m length. These are then reinforced with double rows of U-shaped staples in the corresponding layers to prevent deformation, landslides, and other quality issues during soil stacking and mechanical construction.

[0027] In one embodiment, a waterproof layer is provided on both sides of the top of the trapezoidal main structure along the length direction, and each waterproof layer is inclined outward.

[0028] Specifically, the aquiclude is located on both sides of the top of the aquiclude, sloping outward at a specific slope. It is made of clay compacted and filled at a specific slope and thickness. This aquiclude improves the top of the trapezoidal main structure's resistance to rainwater erosion, ensures the stability of the top slope, and improves the durability and safety of the entire target corridor.

[0029] In one embodiment, slope protection is provided on the outside of the earthbag, and the slope protection includes a woven net and anchor rods for fixing the woven net to the earthbag, and a spray planting surface is sprayed on the woven net.

[0030] Specifically, the slope protection is composed of high-galvanized machine-woven mesh, anchor rods and spray-seeded planting surfaces, which are mainly used for the protection of inward-inclined slopes to ensure the safety and stability of this ultra-high target corridor structure.

[0031] High-galvanized machine-woven mesh with a diameter of 2.6mm and a mesh size of 50mm*50mm can be selected. Anchor rods can be made of Grade I steel with a diameter of 12mm and can be arranged at a spacing of 1000mm*1000mm. The specific height and width of the galvanized machine-woven mesh and anchor rods can be flexibly adjusted according to the actual height and width of the shooting range.

[0032] In one embodiment, the concrete cushion layer is a plain concrete cushion layer, and the number of the plain concrete cushion layers is two, and the two plain concrete cushion layers are symmetrically arranged on both sides of the trapezoidal main structure.

[0033] Specifically, the plain concrete cushion layer is located on both sides of the long direction of the super-high target corridor structure and is cast from plain concrete with a certain strength.

[0034] In one embodiment, there are two drainage ditches at the foot of the slope, and each plain concrete cushion layer is inclined toward the corresponding drainage ditch at the foot of the slope, and each drainage ditch at the foot of the slope is connected to the edge of the corresponding plain concrete cushion layer.

[0035] Specifically, the slope foot drainage ditch is close to the edge of the plain concrete cushion layer, and the water flowing down the slope surface and the water discharged from the graded gravel drainage layer are drained away through this slope foot drainage ditch to prevent quality and safety accidents caused by slope instability due to the accumulation of rainwater.

[0036] Generally speaking, drainage ditches can be made of C25 concrete (other strength grade fine stone concrete can be used). The ditch size can be 0.4x0.4m and the thickness can be 0.2m. The specific design is determined based on the location and actual drainage volume.

[0037] The beneficial effects of the utility model are as follows:

[0038] 1. At the same time, the combination of key components such as footing walls, crushed stone drainage layers, geotextiles, reinforced soil, U-shaped nails, earthbags, waterproof layers, slope protection, PCV drainage pipes, slope foot drainage ditches, etc. effectively solved the technical difficulties of construction, ensured the safety, stability and economy of the ultra-high target corridor, guaranteed the construction quality and improved the service life.

[0039] 2. The gravel drainage layer is made of graded gravel laid to a certain thickness, with the same length and width as the bottom of the trapezoidal target corridor. Located at the bottom of the trapezoidal target corridor, it drains rainwater from the upper part of the trapezoidal target corridor through this gravel drainage layer, preventing the inward-sloping slope from deforming and collapsing due to the action of heavy rain or other heavy rainfall.

[0040] 3. The retaining walls are located at the front, back, left, and right sides of the base of the super-high target corridor structure. They primarily protect the foundation and prevent displacement or deformation of the retaining wall under the weight, which could affect the stability and safety of the upper fill. This retaining wall is composed of a mortar cushion and a concrete layer. The mortar cushion is located at the bottom of the concrete layer, providing foundation support, while the concrete layer is located on top of the mortar cushion and serves as a retaining wall.

[0041] 4. Reinforced soil is an important component of the structure of this ultra-high target gallery and plays a key role in blocking bullets. On the one hand, it must ensure that the shock wave of the bullet is reduced, and on the other hand, it must ensure that the bullet will not rebound or deflect due to the rigid structural design.

[0042] 5. The waterproof layer is located on both sides of the top of the waterproof layer in a longitudinal direction, with an outward slope according to a certain slope. It is made of clay filled and compacted according to a certain outward slope and thickness. This waterproof layer improves the rain scour resistance of the top of the trapezoidal main structure, ensures the stability of the top slope, and improves the durability and safety of the entire target corridor.

[0043] 6. The material of the geotextile layer is high-toughness poly-woven geotextile, which is located at the edge of the trapezoidal target corridor. This geotextile is used to wrap the filled gravel soil and filled earthbags. The high toughness of the geotextile is used to enhance the crack resistance and slip resistance of the edge of the trapezoidal target corridor.

[0044] 7. The slope foot drainage ditch is close to the edge of the plain concrete cushion layer. The water flowing down the slope surface and the water discharged from the graded gravel drainage layer are drained away through this slope foot drainage ditch to prevent quality and safety accidents caused by slope instability due to the accumulation of rainwater.

[0045] 8. The slope protection is composed of high-galvanized machine-woven mesh, anchor rods and spray-seeded planting surface, which is mainly used for the protection of inward-inclined slopes to ensure the safety and stability of this ultra-high target corridor structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show 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.

[0047] Figure 1 It is a structural diagram of the utility model;

[0048] Figure numerals: 1-trapezoidal target corridor body, 2-plain concrete cushion layer, 3-waterproof layer, 4-slope protection, 5-PCV drainage pipe, 6-gravel drainage layer, 7-slope foot drainage ditch, 8-foot protection wall, 9-geotextile layer. DETAILED DESCRIPTION

[0049] To make the technical problems, technical solutions, and technical effects of the present invention more clear, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0051] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0052] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0053] Example 1

[0054] like Figure 1 As shown, this embodiment provides an ultra-high target gallery structure, including a trapezoidal target gallery body 1, a gravel drainage layer 6 arranged at the bottom of the trapezoidal target gallery body 1, a footing wall 8 arranged at the outer periphery of the bottom of the trapezoidal target gallery body 1, and a slope foot drainage ditch 7 connected to the bottom of the gravel drainage layer 6 through a concrete cushion layer.

[0055] Specifically, the gravel drainage layer 6 is made of graded gravel laid to a certain thickness, and its length and width are consistent with the bottom of the trapezoidal target gallery body 1. Located at the bottom of the trapezoidal target gallery body 1, it drains rainwater that seeps down from the upper part of the trapezoidal target gallery body 1 through the gravel drainage layer 6, preventing the inwardly inclined slope from deforming and collapsing under the action of heavy rain or other heavy rainfall.

[0056] Example 2

[0057] This embodiment is a further optimization based on the embodiment 1, specifically:

[0058] The footing wall consists of a mortar pad at the bottom and a concrete cast layer on top of the mortar pad.

[0059] Specifically, the footing wall 8 is located at the front, back, left and right sides of the bottom of the super-high target corridor structure, and mainly plays the role of protecting the stability of the foundation and preventing the retaining wall from being displaced or deformed under the action of weight, affecting the stability and safety of the upper fill.

[0060] The footing wall 8 is composed of a mortar cushion layer and a concrete pouring layer. The mortar cushion layer is located at the bottom of the concrete pouring layer to provide basic support, and the concrete pouring layer is located on the top of the mortar cushion layer to play a retaining role.

[0061] Example 3

[0062] This embodiment is a further optimization based on the second embodiment, specifically:

[0063] The trapezoidal target gallery body 1 includes a trapezoidal main structure and a geotextile layer 9 arranged at the edge of the trapezoidal main structure.

[0064] Specifically, the geotextile layer 9 is made of high-toughness poly-woven geotextile, which is located at the edge of the trapezoidal target corridor body 1. This geotextile is used to wrap the filled gravel soil and filled sandbags, and the high toughness of the geotextile is used to enhance the crack resistance and slip resistance of the edge of the trapezoidal target corridor body 1.

[0065] Generally, high-tenacity polyester woven geotextile is selected as type B, with a laying length of L = 17.0 meters. The trapezoidal target corridor body 1 has 32 layers, the layer spacing is 0.5 meters, and the return length is L = 3.0 meters. In the actual application process, the purpose is comprehensively designed and selected based on the height, width and inner inclination angle of the trapezoidal target corridor body 1.

[0066] High-tenacity polyester woven geotextiles should be laid horizontally, perpendicular to the slope. At outer corners, the maximum allowable gap distance is 3 cm. If the maximum gap distance is exceeded, add another layer of high-tenacity polyester woven geotextile in the gap. In the overlapped area at inner corners, ensure that the high-tenacity polyester woven geotextile is tensioned without wrinkling. The top layer of high-tenacity polyester woven geotextile should be long enough and buried under the fill to ensure that the fill provides sufficient restraint to permanently anchor the high-tenacity polyester woven geotextile.

[0067] Example 4

[0068] This embodiment is further optimized based on embodiment 2 or 3, specifically:

[0069] The trapezoidal main structure gradually becomes smaller from bottom to top, and the material of the trapezoidal main structure is reinforced soil with steel bars inside.

[0070] Specifically, reinforced soil, as an important component of the structure of this ultra-high target gallery, plays a key role in blocking bullets. On the one hand, it must ensure that the shock wave of the bullet is reduced, and on the other hand, it must ensure that the bullet will not rebound or deflect due to the rigid structural design.

[0071] The filler parameters used are as follows: Filler parameters for the reinforced area are Ф = 28.0°, C = 5kPa, and Y = 18.5kN / ㎡. Filler parameters after the reinforcement refer to the reinforced area. This design only considers the stability of the reinforced soil slope itself. The foundation fill parameters are based on the values after foundation treatment: First, strictly follow the design documents and use crushed stone soil as filler (ratio 2:8). The filler particle size should not exceed 2 / 3 of the compacted filler thickness and should not exceed 10cm. If filler (reinforced soil) that meets the requirements is selected on-site, sandy soil, gravel, crushed (gravel) stone, and other materials can be used. Silt and humus soil are strictly prohibited. When using clay as filler, construction should be carried out at an optimum moisture content of ±0.2%. Second, reinforced earth retaining walls in waterlogged areas should use a water-stable and permeable filler. Third, the filler must not contain organic materials or domestic waste. Fourthly, the backfill material behind the reinforced body shall be that specified in the Technical Specifications for Highway Roadbed Construction JTGF10-2006, and the construction shall be carried out in accordance with the corresponding construction rules.

[0072] Example 5

[0073] This embodiment is a further optimization based on the embodiment 4, specifically:

[0074] The trapezoidal main structure comprises multiple layers of mixed filler that are backfilled and compacted in layers. Geotextile layers 9 are also provided between each mixed filler layer and fixed with U-shaped nails.

[0075] Specifically, the geotextile is then laid in the corresponding layer and fixed with U-shaped nails to ensure the stability and safety of the slope soil and prevent slope instability due to overheight and mechanical compaction.

[0076] The U-shaped nails are made of steel bars and are shaped into a U-shaped structure. They are mainly used to fix the geotextile layer 9 and the anchor rods in the mixed filler layer to ensure the stability and safety of the inner inclined slope.

[0077] Example 6

[0078] This embodiment is a further optimization based on the embodiment 5, specifically:

[0079] PCV drainage pipes 5 are provided at the edges of each mixed filler layer, and earth bags are provided on the outside of each mixed filler layer.

[0080] Specifically, it sits atop a graded gravel drainage layer 6, with a slope protection layer 4 on top. The surface is designed with slope protection 4 and PCV drainage pipes 5 to ensure slope stability. Steel anchors are embedded in the soil. Earthbags are located around the edges of this trapezoidal main structure, primarily to mound up the soil and ensure slope stability.

[0081] In addition, the PCV drainage pipes 5 are located around the reinforced soil and spaced at regular intervals. The diameter of the PCV drainage pipes 5 is designed based on the required drainage volume. Typically, they are made of a PVC water pipe (50mm diameter, 2mm diameter, with a plum blossom pattern of holes drilled at 30mm intervals) wrapped in permeable non-woven fabric.

[0082] In addition, the woven bags are filled with soil, and the soil in the woven belts is leveled, arranged in an inward-sloping pattern from bottom to top, bag by bag. Generally, every fourth bag is wrapped with a high-tenacity polyester woven geotextile with a 3m length. These are then reinforced with double rows of U-shaped staples in the corresponding layers to prevent deformation, landslides, and other quality issues during soil stacking and mechanical construction.

[0083] Example 7

[0084] This embodiment is a further optimization based on the embodiment 6, specifically:

[0085] The top of the trapezoidal main structure is provided with waterproof layers 3 on both sides along the length direction, and each waterproof layer 3 is inclined outwards.

[0086] Specifically, the waterproof layer 3 is located on both sides of the top of the waterproof layer 3, with an outward slope and a certain thickness. It is made of clay filled and compacted at a certain outward slope. This waterproof layer 3 improves the top of the trapezoidal main structure's resistance to rainwater erosion, ensures the stability of the top slope, and improves the durability and safety of the entire target corridor.

[0087] Example 8

[0088] This embodiment is a further optimization based on the embodiment 7, specifically:

[0089] Slope protection 4 is provided on the outside of the soil bag. The slope protection 4 comprises a woven net and anchor rods for fixing the woven net to the soil bag. The woven net is sprayed with a spray planting surface.

[0090] Specifically, the slope protection 4 is composed of high-galvanized machine-woven mesh, anchor rods and spray-seeded planting surface, which is mainly used for the protection of the inner inclined slope to ensure the safety and stability of this ultra-high target corridor structure.

[0091] High-galvanized machine-woven mesh with a diameter of 2.6mm and a mesh size of 50mm*50mm can be selected. Anchor rods can be made of Grade I steel with a diameter of 12mm and can be arranged at a spacing of 1000mm*1000mm. The specific height and width of the galvanized machine-woven mesh and anchor rods can be flexibly adjusted according to the actual height and width of the shooting range.

[0092] Example 9

[0093] This embodiment is a further optimization based on the embodiment 7, specifically:

[0094] The concrete cushion layer is a plain concrete cushion layer 2. There are two plain concrete cushion layers 2. The two plain concrete cushion layers 2 are symmetrically arranged on both sides of the trapezoidal main structure.

[0095] Specifically, the plain concrete cushion layer 2 is located on both sides of the long direction of the super-high target gallery structure and is cast from plain concrete with a certain strength.

[0096] There are two drainage ditches 7 at the foot of the slope, and each drainage ditch 7 is connected to the edge of the corresponding plain concrete cushion layer 2.

[0097] Specifically, the slope foot drainage ditch 7 is close to the edge of the plain concrete cushion layer 2, and the water flowing down the slope surface and the water discharged from the graded gravel drainage layer 6 are drained away through this slope foot drainage ditch 7, preventing quality and safety accidents caused by slope instability due to the accumulation of rainwater.

[0098] Generally speaking, drainage ditches can be made of C25 concrete (other strength grade fine stone concrete can be used). The ditch size can be 0.4x0.4m and the thickness can be 0.2m. The specific design is determined based on the location and actual drainage volume.

Claims

1. An ultra-high target gallery structure, characterized in that: The invention comprises a trapezoidal target gallery body (1), a crushed stone drainage layer (6) arranged at the bottom of the trapezoidal target gallery body (1), a footing wall (8) arranged at the outer periphery of the bottom of the trapezoidal target gallery body (1), and a slope foot drainage ditch (7) connected to the bottom of the crushed stone drainage layer (6) through a concrete cushion layer.

2. The ultra-high target gallery structure according to claim 1, characterized in that: The footing wall comprises a mortar cushion layer at the bottom and a concrete pouring layer located on top of the mortar cushion layer.

3. The ultra-high target gallery structure according to claim 1, characterized in that: The trapezoidal target gallery body (1) comprises a trapezoidal main structure and a geotextile layer (9) arranged at the edge of the trapezoidal main structure.

4. The ultra-high target gallery structure according to claim 3, characterized in that: The trapezoidal main structure gradually becomes smaller from the bottom to the top, and the material of the trapezoidal main structure is reinforced soil with steel bars inside.

5. The ultra-high target gallery structure according to claim 4, characterized in that: The trapezoidal main structure comprises multiple layers of backfilled and compacted mixed filler layers, and geotextile layers (9) are also provided between each of the mixed filler layers and fixed with U-shaped nails.

6. The ultra-high target gallery structure according to claim 4, characterized in that: A PCV drainage pipe (5) is provided at the edge of each mixed filler layer, and a soil bag is provided on the outside of each mixed filler layer.

7. The ultra-high target gallery structure according to claim 6, characterized in that: The top of the trapezoidal main structure is provided with water-proof layers (3) on both sides along the length direction, and each of the water-proof layers (3) is inclined outwards.

8. The ultra-high target gallery structure according to claim 6, characterized in that: A slope protection (4) is provided on the outside of the earth bag. The slope protection (4) comprises a woven net and anchor rods for fixing the woven net to the earth bag. A spray planting surface is sprayed on the woven net.

9. The ultra-high target gallery structure according to claim 5, characterized in that: The concrete cushion layer is a plain concrete cushion layer (2), and the number of the plain concrete cushion layers (2) is two, and the two plain concrete cushion layers (2) are symmetrically arranged on both sides of the trapezoidal main structure.

10. The ultra-high target gallery structure according to claim 9, characterized in that: There are two slope foot drainage ditches (7), each of the plain concrete cushion layers (2) is inclined toward the corresponding slope foot drainage ditch (7), and each of the slope foot drainage ditches (7) is connected to the edge of the corresponding plain concrete cushion layer (2).

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