A buried high embankment structure for high-speed railway in a deep miscellaneous fill area and its construction method

Abstract

The present invention relates to the technical field of railway engineering, and specifically discloses a buried high embankment structure for high-speed railways in a deep miscellaneous fill area and a construction method thereof, which includes a high embankment and a filling area. The filling area includes a first backfill and counter-pressure area, a second backfill and counter-pressure area, a first miscellaneous fill area and a second miscellaneous fill area. The high embankment is buried above the original ground. The first miscellaneous fill area is buried on one side of the high embankment, and the second miscellaneous fill area is buried on the other side of the high embankment. The first backfill and counter-pressure area is buried between the first miscellaneous fill area and the high embankment, and the first backfill and counter-pressure area is buried above the first miscellaneous fill area and the high embankment. The second backfill and counter-pressure area is buried between the second miscellaneous fill area and the high embankment, and the second backfill and counter-pressure area is buried above the second miscellaneous fill area and the high embankment. With the above structural settings, the construction cost of foundation reinforcement can be significantly reduced, the construction period can be greatly shortened, and the project investment can be saved.

Description

Technical Field

[0001] The present invention relates to the technical field of railway engineering, and particularly relates to a buried high embankment structure for high-speed railway in a deep miscellaneous fill area and a construction method thereof. Background Art

[0002] Currently, during the landfill process of high-speed railways, it is difficult to avoid passing through some areas with thick miscellaneous fills. Since deep miscellaneous fills are generally filled with local waste soil, they are under-compacted, wet, have miscellaneous components and poor sorting, and the overall stability of the fill is poor and the self-settlement is large, making it difficult to meet the strict control requirements of "zero settlement" for high-speed railways, and posing a great threat to the safe operation of railways.

[0003] In the prior art, for deep miscellaneous fill foundations with a depth of more than 10m, measures such as compaction replacement, CFG piles, plain concrete piles, prestressed pipe piles, pile slab (raft) crossing, etc. are generally taken for construction.

[0004] However, in the prior art, the construction period is long, the cost is high, and the construction quality is difficult to control. Summary of the Invention

[0005] The purpose of the present invention is to provide a buried high embankment structure for high-speed railway in a deep miscellaneous fill area and a construction method thereof, which solves the problems of long construction period, high cost and difficult control of construction quality in the prior art.

[0006] To achieve the above purpose, a buried high embankment structure for high-speed railway in a deep miscellaneous fill area adopted by the present invention includes a high embankment and a filling area. The filling area includes a first backfill and anti-pressure area, a second backfill and anti-pressure area, a first miscellaneous fill area and a second miscellaneous fill area. The high embankment is filled above the original ground. The first miscellaneous fill area is filled on one side of the high embankment, the second miscellaneous fill area is filled on the other side of the high embankment. The first backfill and anti-pressure area is filled between the first miscellaneous fill area and the high embankment, and the first backfill and anti-pressure area is filled above the first miscellaneous fill area and the high embankment. The second backfill and anti-pressure area is filled between the second miscellaneous fill area and the high embankment, and the second backfill and anti-pressure area is filled above the second miscellaneous fill area and the high embankment.

[0007] Wherein, the filling area further includes a supporting drainage ditch, and the supporting drainage ditch is arranged on one side of the second miscellaneous fill area.

[0008] Wherein, the filling area further includes a herringbone frame slope protection, and the herringbone frame slope protection is arranged on one side of the supporting drainage ditch.

[0009] Among them, the filled soil area further includes anti-slide piles, and the number of the anti-slide piles is multiple. One end of each anti-slide pile is buried inside the original ground, and the other end of each anti-slide pile is buried inside the second miscellaneous filled soil area.

[0010] Among them, the buried high embankment structure of high-speed railway in the deep miscellaneous filled soil area further includes drainage areas, and the number of the drainage areas is two. Each drainage area is respectively arranged above the corresponding first backfill and anti-pressure area and the second backfill and anti-pressure area.

[0011] Among them, each drainage area includes a drainage ditch framework, a panel and a filter screen. The drainage ditch framework is arranged above the first backfill and anti-pressure area. The number of the panels is multiple, and each panel is respectively laid above the drainage ditch framework, and the panel covers the drainage ditch framework. The number of the filter screens is multiple, and each filter screen is respectively fixedly connected with the corresponding panel and is respectively embedded inside the corresponding panel.

[0012] Among them, each drainage area further includes an inner drainage component, and the inner drainage component is arranged inside the drainage ditch framework.

[0013] Among them, the inner drainage component includes a bottom plate, side plates and an arch plate. The number of the side plates is two, and the two side plates are respectively fixedly connected with the bottom plate and are respectively located above the bottom plate, and the two side plates are respectively arranged inside the drainage ditch framework. The arch plate is fixedly connected with the two side plates and is located between the two side plates.

[0014] Among them, the inner drainage component further includes a bottom column, and the bottom column is fixedly connected with the drainage ditch framework and is located inside the drainage ditch framework.

[0015] The present invention also provides a construction method for a buried high embankment structure of high-speed railway in a deep miscellaneous filled soil area, including the following steps:

[0016] Do a good job in temporary ground drainage, excavate the miscellaneous filled soil in layers according to the designed slope ratio (the miscellaneous filled soil in the high subgrade range and the right side range of the subgrade is reserved), stack, turn over and sun-dry it;

[0017] Construct slope support drainage ditches and herringbone frame slopes until the designed elevation of the anti-slide pile top is reached;

[0018] Excavate the anti-slide pile shaft in a staggered pile manner, pour the pile body concrete until the construction of the anti-slide pile is completed and the inspection is qualified;

[0019] Excavate the soil body below the anti-slide pile top platform and the miscellaneous filled soil within the designed excavation range of the high subgrade according to the designed slope ratio, and excavate to not less than 30 cm below the original ground line;

[0020] Select hard massive stones to fill the high embankment in layers;

[0021] For every 2 m of filling height of the high embankment, dynamic compaction is used for densification, and the above steps are repeated until the subgrade filling is completed;

[0022] In the excavation slope range on both sides of the high embankment, the miscellaneous fill after mixing, turning over, drying and airing the tunnel muck is used for layered backfilling and compaction (after every 1-2 m of filling and compaction of the high embankment, the first backfill and counter-pressure area and the second backfill and counter-pressure area can be backfilled);

[0023] Backfill the backfill and counter-pressure area to the top surface of the subgrade bed bottom layer, and construct the drainage areas on both sides;

[0024] Construct the subgrade bed surface layer of the high embankment and fill the filler;

[0025] The construction is completed.

[0026] A buried high embankment structure for high-speed railway in a deep miscellaneous fill area and its construction method of the present invention adopt turning over, drying and airing in situ, layered backfilling and layered compaction. The maximum backfilling height of the site can reach about 30 m, reducing the external transportation of miscellaneous fill waste soil. It can not only make use of the original available miscellaneous fill nearby, but also use part of the tunnel muck. At the same time, through the first backfill and counter-pressure area and the second backfill and counter-pressure area to form counter-pressure on the high embankment, it can ensure the stability and reliability of the high embankment. The high embankment filled with hard block stones is buried underground to become an artificial reinforced foundation, enhancing the stiffness of the high subgrade through layered dynamic compaction, effectively controlling the post-construction settlement. By combining the "buried high embankment" with the "backfill and counter-pressure areas on both sides" to form a geotechnical composite structure and treating the high embankment as a kind of compacted foundation, the construction cost of foundation reinforcement is greatly reduced, the construction period is greatly shortened and the project investment is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is a schematic structural diagram of the first embodiment of the present invention.

[0029] Figure 2 is of the present invention Figure 1 structural cross-sectional view taken along line A-A.

[0030] Figure 3 is a schematic structural diagram of the second embodiment of the present invention.

[0031] Figure 4 is a schematic structural diagram of the drainage area of the second embodiment of the present invention.

[0032] Figure 5 It is a partial structural schematic diagram of the third embodiment of the present invention.

[0033] Figure 6 is of the present invention Figure 5 Structural sectional view taken along line B-B.

[0034] Figure 7 It is a step flow chart of a construction method for a buried high embankment structure of a high-speed railway in a deep miscellaneous fill area of the present invention.

[0035] 101 - High embankment, 102 - First backfill and anti-pressure area, 103 - Second backfill and anti-pressure area, 104 - First miscellaneous fill area, 105 - Second miscellaneous fill area, 106 - Support drainage ditch, 107 - Herringbone skeleton slope protection, 108 - Anti-slide pile, 201 - Drainage ditch frame, 202 - Panel, 203 - Filter screen, 204 - Bottom plate, 205 - Side plate, 206 - Arch plate, 207 - Bottom column, 301 - Snap ring, 302 - First reinforcement plate, 303 - Second reinforcement plate, 304 - Stud, 305 - Plug column. Detailed implementation manners

[0036] The first embodiment of the present application is as follows:

[0037] Please refer to Figure 1 and Figure 2 , wherein Figure 1 is the structural schematic diagram of the first embodiment, Figure 2 is Figure 1 Structural sectional view taken along line A-A of, the present invention provides a buried high embankment structure of a high-speed railway in a deep miscellaneous fill area: including a high embankment 101 and a filling area, and the filling area includes a first backfill and anti-pressure area 102, a second backfill and anti-pressure area 103, a first miscellaneous fill area 104, a second miscellaneous fill area 105, a support drainage ditch 106, a herringbone skeleton slope protection 107, and an anti-slide pile 108.

[0038] For this specific implementation manner, by forming an anti-pressure on the high embankment 101 through the first backfill and anti-pressure area 102 and the second backfill and anti-pressure area 103, it can ensure the stability and reliability of the high embankment 101. By combining the "buried high embankment" with the "two-side backfill and anti-pressure areas" to form a geotechnical composite structure and regarding the high embankment 101 as a kind of compacted foundation, the construction cost of foundation reinforcement is greatly reduced.

[0039] Among them, the high embankment 101 is filled above the original ground. The first miscellaneous fill area 104 is filled on one side of the high embankment 101, and the second miscellaneous fill area 105 is filled on the other side of the high embankment 101. The first backfill and counter-pressure area 102 is filled between the first miscellaneous fill area 104 and the high embankment 101, and the first backfill and counter-pressure area 102 is filled above the first miscellaneous fill area 104 and the high embankment 101. The second backfill and counter-pressure area 103 is filled between the second miscellaneous fill area 105 and the high embankment 101, and the second backfill and counter-pressure area 103 is filled above the second miscellaneous fill area 105 and the high embankment 101. The high embankment 101 is filled with hard block stones that are not easily weathered, and the slope of the high embankment 101 is not less than 1.15. The filling starting point is not less than 30 cm below the original ground line. For every 2 m of filling height of the high embankment 101, dynamic compaction is used for reinforcement until the filling reaches the elevation of the subgrade top surface. After every 1 - 2 m of filling height of the high embankment 101 is completed and compacted, the first backfill and counter-pressure area 102 and the second backfill and counter-pressure area 103 can be filled.

[0040] Secondly, the support drainage ditch 106 is arranged on one side of the second miscellaneous fill area 105. The support drainage ditch 106 is used as the main framework of the herringbone frame slope protection 107, and the ditch spacing of the support drainage ditch 106 is 4.0 m.

[0041] Meanwhile, the herringbone frame slope protection 107 is arranged on one side of the support drainage ditch 106, and the herringbone frame slope protection 107 can prevent the slope edge from being scoured.

[0042] In addition, the number of the anti-slide piles 108 is multiple. One end of each anti-slide pile 108 is filled inside the original ground, and the other end of each anti-slide pile 108 is filled inside the second miscellaneous fill area 105. The anti-slide piles 108 are cast-in-place with reinforced concrete and are located on the side with thicker and higher miscellaneous fill, playing a role in temporary reinforcement. A 5 m platform is set at the pile top. The anti-slide piles 108 are cast-in-place with reinforced concrete, the pile spacing is 6 m, and the pile cross-section size is 1.5 m × 2.0 m. The anti-slide piles 108 play a role in temporary retaining to ensure the safety and stability of the miscellaneous fill after excavation during the filling of the high embankment 101.

[0043] When using the buried high embankment structure for high-speed railway in a deep miscellaneous fill area of this embodiment, after in-situ excavation and sun drying, it is backfilled and compacted in layers. The maximum backfill height of the site can reach about 30 m, reducing the external transportation of waste soil from miscellaneous fill. It can not only make use of the original available miscellaneous fill nearby, but also utilize some tunnel muck. At the same time, the first backfill and anti-pressure area 102 and the second backfill and anti-pressure area 103 form an anti-pressure on the high embankment 101, which can ensure the stability and reliability of the high embankment 101. The high embankment 101 filled with hard block stones is buried underground to become an artificial reinforced foundation. The stiffness of the high subgrade is enhanced by layer-by-layer impact compaction, effectively controlling the post-construction settlement. By combining the "buried high embankment" with the "backfill and anti-pressure areas on both sides" to form a geotechnical composite structure, regarding the high embankment 101 as a kind of compacted foundation, the construction cost of foundation reinforcement is greatly reduced, the construction period is significantly shortened, and the project investment is saved. At the same time, the support drainage ditch 106 is used as the main framework of the herringbone skeleton slope protection 107, and the ditch spacing of the support drainage ditch 106 is 4.0 m. The herringbone skeleton slope protection 107 can prevent the slope from being scoured. The anti-slide pile 108 is cast in-situ with reinforced concrete and is located on the side with thicker and higher miscellaneous fill, playing a role of temporary reinforcement. A 5 m platform is set at the top of the pile.

[0044] The second embodiment of this application is:

[0045] On the basis of the first embodiment, please refer to Figure 3 and Figure 4 , where Figure 3 is the structural schematic diagram of the second embodiment, Figure 4 is the structural schematic diagram of the drainage area of the second embodiment. The present invention provides a buried high embankment structure for high-speed railway in a deep miscellaneous fill area: It further includes a drainage area. The drainage area includes a drainage ditch framework 201, a panel 202, a filter net 203, and an internal drainage component. The internal drainage component includes a bottom plate 204, a side plate 205, an arch plate 206, and a bottom column 207.

[0046] For this specific embodiment, the drainage ditch framework 201 is covered by the panel 202. During drainage, large impurities are filtered by the filter net 203, which can prevent large impurities from blocking the panel 202. At the same time, after the filter net 203 is blocked by sediment, a high-pressure water gun can also be used to quickly clean the sediment. The internal drainage component can allow water to drain away through multiple channels, preventing blockage.

[0047] Among them, the number of the drainage areas is two, and each drainage area is respectively arranged above the corresponding first backfill and anti-pressure area 102 and the second backfill and anti-pressure area 103. The drainage ditch frame 201 is arranged above the first backfill and anti-pressure area 102. The number of the panels 202 is multiple, and each panel 202 is respectively laid above the drainage ditch frame 201, and the panel 202 covers the drainage ditch frame 201. The number of the filter nets 203 is multiple, and each filter net 203 is respectively fixedly connected to the corresponding panel 202 and is respectively embedded inside the corresponding panel 202. By covering the drainage ditch frame 201 with the panel 202, when draining water, large impurities can be filtered by the filter net 203, which can prevent the large impurities from blocking the panel 202. At the same time, after the filter net 203 is blocked by sediment, a high-pressure water gun can also be used to quickly clean the sediment. The inner drainage component can allow the water flow to have multiple channels to drain away, preventing blockage.

[0048] Secondly, the inner drainage component is arranged inside the drainage ditch frame 201. The number of the side plates 205 is two, and the two side plates 205 are respectively fixedly connected to the bottom plate 204 and are respectively located above the bottom plate 204, and the two side plates 205 are respectively arranged inside the drainage ditch frame 201. The arch plate 206 is fixedly connected to the two side plates 205 and is located between the two side plates 205. When the water flow is discharged into the drainage ditch frame 201 through the filter net 203 and the panel 202, the water flow can be drained away respectively through the bottom plate 204, the side plates 205 and the arch plate 206, reducing the risk of blockage of the drainage area.

[0049] At the same time, the bottom column 207 is fixedly connected to the drainage ditch frame 201 and is located inside the drainage ditch frame 201, and the bottom column 207 supports the drainage ditch frame 201.

[0050] When using the buried high embankment structure of high-speed railway in a deep miscellaneous fill area of this embodiment, the drainage ditch frame 201 is covered by the panel 202. When draining water, large impurities can be filtered by the filter net 203, which can prevent the large impurities from blocking the panel 202. At the same time, after the filter net 203 is blocked by sediment, a high-pressure water gun can also be used to quickly clean the sediment. When the water flow is discharged into the drainage ditch frame 201 through the filter net 203 and the panel 202, the water flow can be drained away respectively through the bottom plate 204, the side plates 205 and the arch plate 206, reducing the risk of blockage of the drainage area. At the same time, the bottom column 207 supports the drainage ditch frame 201.

[0051] The third embodiment of this application is as follows:

[0052] Based on the second embodiment, please refer to Figure 5 and Figure 6 , where Figure 5 is a schematic diagram of the partial structure of the third embodiment, Figure 6 is Figure 5 a sectional view of the structure of line B-B of . The present invention provides a buried high embankment structure for high-speed railways in a deep miscellaneous fill area: It further includes a reinforcement mechanism, and the reinforcement mechanism includes a snap ring 301, a first reinforcement plate 302, a second reinforcement plate 303, a stud 304, and a plug 305.

[0053] For this specific embodiment, by fixing the first reinforcement plate 302 and the second reinforcement plate 303 to the outer wall of the anti-slide pile 108 through the stud 304, the tensile resistance of the anti-slide pile 108 can be enhanced, the anti-slide pile 108 can be prevented from shifting, and the strength of the anti-slide pile 108 can be increased.

[0054] Among them, the number of the reinforcement mechanisms is multiple, and the multiple reinforcement mechanisms are respectively arranged on the outer wall of the anti-slide pile 108. The snap ring 301 is fixedly connected to the anti-slide pile 108 and sleeved on the outer wall of the anti-slide pile 108. The first reinforcement plate 302 and the second reinforcement plate 303 are respectively sleeved on the outer wall of the snap ring 301. The number of the studs 304 is two, and each stud 304 respectively penetrates the first reinforcement plate 302 and is threadedly connected to the second reinforcement plate 303, so as to fix the first reinforcement plate 302 and the second reinforcement plate 303 to the outer wall of the anti-slide pile 108 through the stud 304, and is limited by the snap ring 301. The anti-slide strength and anti-tensile strength of the anti-slide pile 108 can be enhanced through the first reinforcement plate 302 and the second reinforcement plate 303.

[0055] Secondly, the number of the plugs 305 is two, and each plug 305 is respectively arranged inside the first reinforcement plate 302. The plug 305 can protect the opening at one end of the stud 304 and reduce the erosion of the soil.

[0056] When using the buried high embankment structure for high-speed railways in a deep miscellaneous fill area of this embodiment, the first reinforcement plate 302 and the second reinforcement plate 303 are fixed to the outer wall of the anti-slide pile 108 through the stud 304, and are limited by the snap ring 301. The anti-slide strength and anti-tensile strength of the anti-slide pile 108 can be enhanced through the first reinforcement plate 302 and the second reinforcement plate 303. At the same time, the plug 305 can block and protect the opening at one end of the stud 304, and reduce the erosion of the soil on the stud 304.

[0057] Please refer to Figure 7 , the present invention also provides a construction method for a buried high embankment structure of a high-speed railway in a deep miscellaneous fill area, including the following steps:

[0058] S1: Do a good job in temporary ground drainage, excavate the miscellaneous fill in layers according to the designed slope ratio (reserve the miscellaneous fill within the high embankment range and on the right side of the embankment), stack and turn it over for sunning;

[0059] S2: Construct the slope support infiltration ditch 106 and the herringbone frame slope protection until the designed elevation of the top of the anti-slide pile 108 is reached;

[0060] S3: Excavate the pile wells of the anti-slide piles 108 at intervals, pour the pile body concrete until the construction of the anti-slide piles 108 is completed and qualified after inspection;

[0061] S4: Excavate the soil below the top platform of the anti-slide pile 108 and the miscellaneous fill within the designed excavation range of the high embankment according to the designed slope ratio, and excavate to not less than 30 cm below the original ground line;

[0062] S5: Take hard block stones and fill the high embankment 101 in layers;

[0063] S6: When the high embankment 101 is filled to a height of 2 m each time, use impact rolling to compact it, and repeat the previous step until the embankment filling is completed;

[0064] S7: Take the tunnel muck in the excavation slope range on both sides of the high embankment 101 and mix it with the sunned miscellaneous fill, and backfill and compact it in layers (after the high embankment 101 is compacted every time it is filled to a height of 1 - 2 m, the first backfill and counter-pressure area 102 and the second backfill and counter-pressure area 103 can be backfilled);

[0065] S8: Backfill the backfill and counter-pressure area to the top surface of the subgrade bed course, and construct the drainage areas on both sides;

[0066] S9: Construct the surface layer of the subgrade bed of the high embankment 101 and fill the filler;

[0067] S10: The construction is completed.

[0068] After adopting in-situ excavation, sun drying, layered backfilling and layered compaction, the maximum backfilling height of the site can reach about 30m, reducing the external transportation of miscellaneous fill waste soil. It can not only make use of the original available miscellaneous fill nearby, but also use some tunnel muck. At the same time, through the first backfill and anti-pressure area 102 and the second backfill and anti-pressure area 103, anti-pressure is formed on the high embankment 101, which can ensure the stability and reliability of the high embankment 101. The high embankment 101 filled with hard block stones is buried underground to become an artificially reinforced foundation. The stiffness of the high subgrade is enhanced by layered impact compaction, effectively controlling the post-construction settlement. By combining the "buried high embankment 101" with the "backfill and anti-pressure areas on both sides" to form a geotechnical composite structure, the high embankment 101 is regarded as a compacted foundation, greatly reducing the construction cost of foundation reinforcement, significantly shortening the construction period and saving project investment.

[0069] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A buried high embankment structure for high-speed railway in a deep miscellaneous fill area, including a high embankment, characterized in that, it further includes a filling area; The filling area includes a first backfill and anti-slide area, a second backfill and anti-slide area, a first miscellaneous fill area and a second miscellaneous fill area. The high embankment is filled above the original ground. The first miscellaneous fill area is filled on one side of the high embankment, and the second miscellaneous fill area is filled on the other side of the high embankment. The first backfill and anti-slide area is filled between the first miscellaneous fill area and the high embankment, and the first backfill and anti-slide area is filled above the first miscellaneous fill area and the high embankment. The second backfill and anti-slide area is filled between the second miscellaneous fill area and the high embankment, and the second backfill and anti-slide area is filled above the second miscellaneous fill area and the high embankment; The filling area further includes anti-slide piles. The number of the anti-slide piles is multiple. One end of each anti-slide pile is filled inside the original ground, and the other end of each anti-slide pile is filled inside the second miscellaneous fill area; It further includes a reinforcement mechanism. The reinforcement mechanism includes a snap ring, a first reinforcement plate, a second reinforcement plate, a stud and a plug. The number of the reinforcement mechanisms is multiple. Multiple reinforcement mechanisms are respectively arranged on the outer wall of the anti-slide pile. The snap ring is fixedly connected with the anti-slide pile and sleeved on the outer wall of the anti-slide pile. The first reinforcement plate and the second reinforcement plate are respectively sleeved on the outer wall of the snap ring. The number of the studs is two. Each stud respectively penetrates through the first reinforcement plate and is threadedly connected with the second reinforcement plate. The number of the plugs is two. Each plug is respectively arranged inside the first reinforcement plate.

2. The buried high embankment structure for high-speed railway in a deep miscellaneous fill area according to claim 1, characterized in that, the filling area further includes a supporting drainage ditch, and the supporting drainage ditch is arranged on one side of the second miscellaneous fill area.

3. The buried high embankment structure for high-speed railway in a deep miscellaneous fill area according to claim 2, characterized in that, the filling area further includes a herringbone frame slope protection, and the herringbone frame slope protection is arranged on one side of the supporting drainage ditch.

4. The buried high embankment structure for high-speed railway in a deep miscellaneous fill area according to claim 3, characterized in that, the buried high embankment structure for high-speed railway in a deep miscellaneous fill area further includes drainage areas. The number of the drainage areas is two. Each drainage area is respectively arranged above the corresponding first backfill and anti-slide area and the second backfill and anti-slide area.

5. The buried high embankment structure for high-speed railway in a deep miscellaneous fill area according to claim 4, characterized in that, each drainage area includes a drainage ditch frame body, a panel and a filter screen. The drainage ditch frame body is arranged above the first backfill and anti-slide area. The number of the panels is multiple. Each panel is respectively laid above the drainage ditch frame body, and the panel covers the drainage ditch frame body. The number of the filter screens is multiple. Each filter screen is respectively fixedly connected with the corresponding panel and is respectively embedded inside the corresponding panel.

6. A buried high embankment structure for high - speed railway in a deep miscellaneous fill area as claimed in claim 5, characterized in that each of the drainage areas further includes an inner drainage component, and the inner drainage component is arranged inside the drainage ditch framework.

7. A buried high embankment structure for high - speed railway in a deep miscellaneous fill area as claimed in claim 6, characterized in that the inner drainage component includes a bottom plate, side plates and an arch plate. The number of the side plates is two. The two side plates are respectively fixedly connected to the bottom plate and are respectively located above the bottom plate. And the two side plates are respectively arranged inside the drainage ditch framework. The arch plate is fixedly connected to the two side plates and is located between the two side plates.

8. A buried high embankment structure for high - speed railway in a deep miscellaneous fill area as claimed in claim 7, characterized in that the inner drainage component further includes bottom columns, and the bottom columns are fixedly connected to the drainage ditch framework and are located inside the drainage ditch framework.

9. A construction method for building a buried high embankment structure of a high-speed railway in a deep miscellaneous fill area as described in claim 8, characterized in that, including the following steps: Do a good job in temporary ground drainage, excavate the miscellaneous fill layer by layer according to the designed slope rate, stack, turn over and air dry. Construct slope - supporting seepage ditches and herringbone frame slopes until the designed elevation of the anti - slide pile top is reached. Excavate the anti - slide pile wells at intervals, pour the pile body concrete until the construction of the anti - slide piles is completed and qualified after inspection. Excavate the soil below the anti - slide pile top platform and the miscellaneous fill within the designed excavation range of the high embankment according to the designed slope rate, and excavate to not less than 30 cm below the original ground line. Select hard block stones to fill the high embankment layer by layer. When the high embankment is filled to 2 m in height, use impact rolling for compaction, and repeat the previous step until the subgrade filling is completed. In the excavation slope range on both sides of the high embankment, take the tunnel muck and mix it with the air - dried miscellaneous fill that has been turned over and excavated, and backfill and compact it layer by layer. Backfill the anti - pressure area to the top surface of the subgrade bed bottom layer, and construct the drainage areas on both sides. Construct the surface layer of the high embankment subgrade bed and fill the filler. The construction is completed.

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