Ultrahigh target gallery structure

Abstract

The invention 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 present invention 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 a target gallery for shooting drills. The design of the target gallery needs to ensure sufficient height, strength and durability. Avoid unreasonable structural design of the target gallery, which may lead to penetration, destruction and loss of bullet effect under shooting, or excessive height design.

[0003] Conventional target corridors are made by using tires, adding soil in the middle of the tires, and then stacking them according to a certain pattern. The whole is made of discarded tires; another method is to use concrete walls as supports and add discarded tires and fill 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, there is a need to build a target corridor:

[0004] Especially when building the target gallery on flat or inclined ground, when the target gallery needs to be made several tens of meters high, it is difficult to control the compaction degree. The trapezoidal step form is controlled, and the construction working surface becomes smaller as it goes up, making it difficult for machinery to go up, and the compaction degree becomes more difficult to control as it goes up. This causes the slope to tilt, shift or collapse under the action of gravity and rain, losing the bullet-blocking effect originally designed, and causing safety accidents.

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

[0006] The purpose of the present invention is to solve the technical problems of the design and construction of the shooting range structure of emergency projects, and to provide a super-high target gallery structure, thereby ensuring the safety, stability and economy of the super-high target gallery, guaranteeing the construction quality and improving 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 crushed stone drainage layer arranged at the bottom of the trapezoidal target gallery body, a footing wall arranged at the periphery of the bottom of the trapezoidal target gallery body, and a slope foot drainage ditch connected to the bottom of the crushed stone drainage layer through a concrete cushion layer.

[0009] Specifically, the gravel drainage layer is made of graded gravel laid in a certain thickness, and its length and width are consistent with the bottom of the trapezoidal target gallery. Located at the bottom of the trapezoidal target gallery, the rainwater that penetrates from the upper part of the trapezoidal target gallery is discharged through the gravel drainage layer to prevent the inner inclined slope from deforming and collapsing due to the action of rainwater when there is a lot of water such as heavy rain.

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

[0011] Specifically, the toe wall is located at the front, back, left and right sides of the bottom of the super-high target corridor structure. It 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, which would affect the stability and safety of the upper fill.

[0012] This footing wall 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.

[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 poly-woven geotextile, which is located at the edge of the trapezoidal target corridor. The 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] Generally, 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] The high-tenacity polyester woven geotextile should be laid horizontally perpendicular to the slope. At the outer corner, the maximum gap distance allowed is 3 cm. If the maximum gap distance is exceeded, a high-tenacity polyester woven geotextile should be laid at the gap. In the overlapping area generated at the inner corner, ensure that the high-tenacity polyester woven geotextile is tensioned without wrinkles. The top layer of high-tenacity polyester woven geotextile should be long enough and buried under the fill to ensure that the fill can provide 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 are as follows: filler parameters of the reinforced area Ф = 28.0°, C = 5kPa, Y = 18.5kN / ㎡; filler parameters after the reinforced body refer to the reinforced area, and this design only considers the stability of the reinforced soil slope itself. The parameters of the foundation fill are based on the values ​​after the foundation treatment: First, strictly follow the design documents, the filler uses crushed stone soil (ratio 2:8), and the filler particle size should not be greater than 2 / 3 of the compacted thickness of the filler, and not greater than 10cm. If the filler (reinforced soil) that meets the requirements is selected on site; sandy soil, gravel, crushed (gravel) stone and other materials can be used, and silt and humus soil are strictly prohibited; when clay soil is used as filler, it should be constructed at the optimal moisture content of ±0.2%. Second, reinforced soil retaining walls in flooded areas should use water-stable and permeable materials as fillers. Third, the filler must not contain organic materials and domestic garbage. 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 layers that are backfilled and compacted in layers, and geotextile layers are also arranged 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 U-shaped. 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 is located on the graded gravel drainage layer, with slope protection designed on the top; slope protection and PCV drainage pipes are designed on the surface to ensure the stability of the slope; anchor rods made of steel bars are pre-buried in the soil. Earthbags are located on the edges of this trapezoidal main structure, mainly to pile up soil and ensure the stability of the slope.

[0025] In addition, the PCV drainage pipe is located around the reinforced soil and arranged at a certain interval. The diameter of the PCV drainage pipe is designed according to the required drainage volume. Generally, it can be made of a PVC water pipe wrapped with a permeable non-woven fabric (50mm diameter pipe body cloth plum blossom-shaped drilling, 30mm spacing, and 2mm diameter).

[0026] In addition, the woven bags are filled with soil, and then the soil in the woven belt is leveled, and arranged in an inward tilt from the bottom to the top in a decreasing manner from bag to bag. Generally, every four bags of soil bags are wrapped with high-toughness polyester woven geotextile with a return length of 3m, and then reinforced with double rows of U-shaped nails in the corresponding layer to prevent quality problems such as deformation and landslides during the process of soil stacking and mechanical construction.

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

[0028] Specifically, the waterproof layer is located on both sides of the top of the waterproof layer in the long direction, and is inclined outward at a certain slope. It is made of clay filled and compacted at a certain outward slope and thickness. This waterproof layer improves the rainwater scouring 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.

[0029] In one embodiment, a slope protection is arranged outside 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] Among them, high-galvanized machine-woven mesh can be selected, with a hanging diameter of 2.6mm and a mesh size of 50mm*50mm. The anchor rods can be made of Grade I steel with a diameter of 12mm, and the anchor rod spacing can be arranged according to 1000mm*1000mm. The galvanized machine-woven mesh and anchor rods can be flexibly adjusted according to the height and width of the actual shooting range on site.

[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 with 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 drainage ditch at the foot of the slope 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 through this drainage ditch at the foot of the slope to prevent quality and safety accidents caused by slope instability due to the accumulation of rainwater.

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

[0037] The beneficial effects of the present invention are as follows:

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

[0039] 2. The gravel drainage layer is made of graded gravel laid in a certain thickness, and its length and width are consistent with the bottom of the trapezoidal target gallery. Located at the bottom of the trapezoidal target gallery, the rainwater that penetrates from the upper part of the trapezoidal target gallery is discharged through the gravel drainage layer to prevent the inner inclined slope from deforming and collapsing due to heavy rain and other heavy water volume.

[0040] 3. The footing wall is located at the front, back, left and right sides of the bottom of the super-high target corridor structure. It mainly protects the stability of the foundation and prevents the retaining wall from displacement or deformation due to weight, which affects the stability and safety of the upper fill. This footing wall 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.

[0041] 4. Reinforced soil is an important component of the structure of this ultra-high target gallery. It 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 the long direction, and is inclined outward at a certain slope. It is made of clay filled and compacted at a certain outward slope and thickness. This waterproof layer improves the rainwater scouring 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 gallery.

[0043] 6. The material of the geotextile layer is high-toughness poly-woven geotextile, which is located at the edge of the trapezoidal target gallery. 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 gallery.

[0044] 7. The drainage ditch at the foot of the slope 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 through this drainage ditch at the foot of the slope 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 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces 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 related drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 It is a schematic diagram of the structure of the present invention;

[0048] Figure numerals: 1-trapezoidal target gallery 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] In order to make the technical problems, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part 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 here 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are 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, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot 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 inventive product is usually placed when used. 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, and therefore 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 in 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, the rainwater that penetrates from the upper part of the trapezoidal target gallery body 1 is discharged through the gravel drainage layer 6 to prevent the inner inclined slope from deforming and collapsing under the action of rainwater when there is a lot of water such as heavy rain.

[0056] Example 2

[0057] This embodiment is further optimized on the basis of embodiment 1, specifically:

[0058] The footing wall consists of a mortar pad at the bottom and a concrete pour 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 gallery 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, thereby 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 further optimized on the basis of embodiment 2, specifically:

[0063] 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.

[0064] Specifically, the geotextile layer 9 is made of high-toughness poly-woven geotextile, which is located at the edge of the trapezoidal target gallery body 1. The geotextile is used to wrap the filled gravel soil and the 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 gallery 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 internal inclination angle of the trapezoidal target corridor body 1.

[0066] The high-tenacity polyester woven geotextile should be laid horizontally perpendicular to the slope. At the outer corner, the maximum gap distance allowed is 3 cm. If the maximum gap distance is exceeded, a high-tenacity polyester woven geotextile should be laid at the gap. In the overlapping area generated at the inner corner, ensure that the high-tenacity polyester woven geotextile is tensioned without wrinkles. The top layer of high-tenacity polyester woven geotextile should be long enough and buried under the fill to ensure that the fill can provide sufficient restraint to permanently anchor the high-tenacity polyester woven geotextile.

[0067] Example 4

[0068] This embodiment is further optimized on the basis of 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 are as follows: filler parameters of the reinforced area Ф = 28.0°, C = 5kPa, Y = 18.5kN / ㎡; filler parameters after the reinforced body refer to the reinforced area, and this design only considers the stability of the reinforced soil slope itself. The parameters of the foundation fill are based on the values ​​after the foundation treatment: First, strictly follow the design documents, the filler uses crushed stone soil (ratio 2:8), and the filler particle size should not be greater than 2 / 3 of the compacted thickness of the filler, and not greater than 10cm. If the filler (reinforced soil) that meets the requirements is selected on site; sandy soil, gravel, crushed (gravel) stone and other materials can be used, and silt and humus soil are strictly prohibited; when clay soil is used as filler, it should be constructed at the optimal moisture content of ±0.2%. Second, reinforced soil retaining walls in flooded areas should use water-stable and permeable materials as fillers. Third, the filler must not contain organic materials and domestic garbage. 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 further optimized on the basis of embodiment 4, specifically:

[0074] The trapezoidal main structure comprises multiple layers of mixed filler layers that are backfilled and compacted in layers, and geotextile layers 9 are also arranged between the mixed filler layers 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 nail is made of steel bars and has a U-shaped structure. It is mainly used to fix the geotextile layer 9 and the anchor rod in the mixed filler layer to ensure the stability and safety of the inner inclined slope.

[0077] Example 6

[0078] This embodiment is further optimized on the basis of Embodiment 5, specifically:

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

[0080] Specifically, it is located on the graded gravel drainage layer 6, with a slope protection 4 designed on the top; the surface is designed with a slope protection 4 and a PCV drainage pipe 5, in order to ensure the stability of the slope; anchor rods made of steel bars are pre-buried in the soil. The earthbags are located at the edges of the trapezoidal main structure, mainly to pile up soil and ensure the stability of the slope.

[0081] In addition, the PCV drainage pipe 5 is located around the reinforced soil and arranged at a certain interval. The diameter of the PCV drainage pipe 5 is designed according to the required drainage volume. Generally, it can be made of a PVC water pipe (50mm diameter pipe body cloth plum blossom-shaped drilling, 30mm spacing, 2mm diameter) wrapped with a permeable non-woven fabric.

[0082] In addition, the woven bags are filled with soil, and then the soil in the woven belt is leveled, and arranged in an inward tilt from the bottom to the top in a decreasing manner from bag to bag. Generally, every four bags of soil bags are wrapped with high-toughness polyester woven geotextile with a return length of 3m, and then reinforced with double rows of U-shaped nails in the corresponding layer to prevent quality problems such as deformation and landslides during the process of soil stacking and mechanical construction.

[0083] Example 7

[0084] This embodiment is further optimized on the basis of 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 at both sides of the top of the waterproof layer 3 in the long direction, and is inclined outward according to a certain slope, and is formed by filling and compacting clay according to a certain outward slope and thickness. The waterproof layer 3 improves the rainwater scouring 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 gallery.

[0087] Example 8

[0088] This embodiment is further optimized on the basis of Embodiment 7, specifically:

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

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

[0091] Among them, high-galvanized machine-woven mesh can be selected, with a hanging diameter of 2.6mm and a mesh size of 50mm*50mm. The anchor rods can be made of Grade I steel with a diameter of 12mm, and the anchor rod spacing can be arranged according to 1000mm*1000mm. The galvanized machine-woven mesh and anchor rods can be flexibly adjusted according to the height and width of the actual shooting range on site.

[0092] Example 9

[0093] This embodiment is further optimized on the basis of 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 at both sides of the super-high target gallery structure in the long direction and is cast by plain concrete with a certain strength.

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

[0097] Specifically, the 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 through the foot drainage ditch 7 to prevent quality and safety accidents caused by slope instability due to the accumulation of rainwater.

[0098] In general, drainage ditches can be made of C25 concrete (other strength grade fine stone concrete can be used) with a ditch size of 0.4x0.4m and a thickness of 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 foot wall comprises a mortar cushion layer at the bottom and a concrete pouring layer located on the 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 mixed filler material that are backfilled and compacted in layers, and geotextile layers (9) are also arranged between the mixed filler layers and fixed by means of 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 waterproof layers (3) on both sides along the length direction, and each waterproof layer (3) is inclined outwards.

8. The ultra-high target gallery structure according to claim 6, characterized in that: A slope protection (4) is arranged outside the earth bag, and the slope protection (4) comprises a woven net and anchor rods for fixing the woven net to the earth bag, and a sprayed 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), 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 drainage ditches (7) at the foot of the slope, and each of the plain concrete cushion layers (2) is inclined toward the corresponding drainage ditch (7) at the foot of the slope, and each of the drainage ditches (7) at the foot of the slope is connected to the edge of the corresponding plain concrete cushion layer (2).

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