High fill road structure and construction process

Abstract

This application relates to a high-fill roadbed structure and construction technology, belonging to the field of roadbed construction technology. It includes a multi-layered rockfill roadbed, wherein the multiple layers of the rockfill roadbed are compacted vertically. Each rockfill roadbed includes a limiting frame and crushed stone placed on the lower layer of the rockfill roadbed. The crushed stone is placed within the space of the limiting frame and compacted after being placed within the frame. The rockfill roadbed also includes a conveying pipe disposed within the limiting frame. The conveying pipe is used to convey cement mortar. Both ends of the conveying pipe are located on the edge of the limiting frame and on the edge parallel to the length direction of the roadbed. The conveying pipe is supported by the lower layer of the rockfill roadbed. Multiple grout outlet holes are formed on the peripheral wall of the conveying pipe, and the grout outlet holes are evenly distributed along the length and circumference of the conveying pipe. This application has the effect of improving the stability of the roadbed.

Description

Technical Field

[0001] This application relates to the field of roadbed construction technology, and in particular to a high embankment roadbed structure and construction technology. Background Technology

[0002] Highways, due to their flexibility and adaptability, have become an important mode of transportation in my country. Highway construction plays a vital role in the economic development of a region, not only stimulating resource investment along the highway route and adjusting the industrial structure and population distribution of the area, but also accelerating the pace of social progress. The roadbed is a crucial component of highway construction. It refers to the strip-shaped structure built along the road according to technical specifications, serving as the foundation of the highway. It is a vital load-bearing layer, bearing the weight of the road surface and the loads of vehicles, and is an essential part of the highway. In the mountainous and hilly areas of southwestern my country, the use of high-fill stone roadbeds is indispensable under such terrain conditions.

[0003] High fill stone roadbeds are usually constructed using locally sourced materials, which typically involve excavating mountains and filling valleys to obtain fill stone. After the stone is obtained, it is crushed and transported to the roadbed to be filled. Subsequently, the piled stone is compacted. High fill embankments should be constructed using a layered filling and compaction method.

[0004] However, after the backfilling process of the high-fill stone roadbed, the load on the roadbed and precipitation will cause the large-diameter stone particles to break, which will lead to uneven settlement of the roadbed. Summary of the Invention

[0005] To improve the stability of the roadbed, this application provides a high embankment roadbed structure and construction technology.

[0006] Firstly, this application provides a high embankment roadbed structure, which adopts the following technical solution:

[0007] A high-fill roadbed structure includes a multi-layered rockfill roadbed, wherein the multi-layered rockfill roadbed is compacted in layers along the vertical direction. The rockfill roadbed includes a limiting frame and crushed stone placed on the lower layer of rockfill roadbed. The crushed stone is placed within the space of the limiting frame and compacted after being placed within the limiting frame. The rockfill roadbed also includes a conveying pipe disposed within the limiting frame. The conveying pipe is used to convey cement mortar. The two ends of the conveying pipe are located on the edge of the limiting frame and on the edge parallel to the length direction of the roadbed. The conveying pipe is supported by the lower layer of rockfill roadbed. Multiple grout outlet holes are opened on the peripheral wall of the conveying pipe. The grout outlet holes are evenly arranged along the length direction and circumferential direction of the conveying pipe.

[0008] Optionally, the conveying pipe is arranged in a serpentine pattern within the defined frame, with both ends of the conveying pipe located on opposite edges of the defined frame.

[0009] Optionally, a conveying trough for accommodating the conveying pipe is provided on the top surface of the lower layer of the stone-filled roadbed, and the depth of the conveying trough is equal to or greater than the outer diameter of the conveying pipe.

[0010] Optionally, the inner wall of the conveying pipe is provided with a plurality of closing plates, each corresponding to a slurry outlet hole. The closing plates are used to block the slurry outlet holes. The closing plates are slidably disposed inside the conveying pipe, and the sliding direction of the closing plates is parallel to the length direction of the conveying pipe. The pipe also includes a driving component for driving the closing plates to slide and open the slurry outlet holes.

[0011] Optionally, the drive unit includes a connecting rope disposed between adjacent closing plates, with the connecting rope on the closing plate near the port of the delivery pipe extending outside the delivery pipe.

[0012] Optionally, the closing plate is annular, the outer diameter of the closing plate is equal to the inner diameter of the conveying pipe, the middle part of the closing plate is a rigid plate, the middle part of the closing plate is used to block the slurry outlet hole, and the two sides of the middle part of the closing plate are rubber plates.

[0013] Optionally, a grouting pipe is provided at the curved end of the conveying pipe, the grouting pipe is connected to the conveying pipe, and the end of the grouting pipe away from the conveying pipe is located within the frame of the limiting frame.

[0014] Optionally, a through hole is provided on the side wall of the conveying pipe near the port. The through hole is located outside the frame of the limiting frame. A sealing ring is embedded in the through hole. The connecting rope passes through the sealing ring and exits the conveying pipe. The inner diameter of the sealing ring is smaller than the diameter of the connecting rope.

[0015] Secondly, this application provides a construction technique for high embankment road embankments, which adopts the following technical solution:

[0016] Optionally, a construction technique for high embankment road embankments, used for constructing high embankment road embankment structures, includes:

[0017] S1: Open a conveying trough on the constructed rock-filled roadbed, then fix the limiting frame on the completed rock-filled roadbed, and move the conveying pipe into the conveying trough;

[0018] S2: Pour the crushed stone into the designated frame. The crushed stone is poured in layers and then flattened.

[0019] S3: After the crushed stone compaction strength reaches the design value, pull the connecting rope. The connecting rope drives the closing plate to move along the conveying pipe, thus opening the slurry outlet.

[0020] S4: The prepared cement mortar is fed into the delivery pipe and grouting pipe through the delivery pump. The cement mortar is moved out through the grout outlet and enters the gap between the crushed stones. After the cement mortar solidifies, it fills the gap between the crushed stones.

[0021] S5: After the cement mortar has set, repeat steps S1-S4 to complete the embankment construction.

[0022] Optionally, a construction technique for high embankment road embankments, used for constructing high embankment road embankment structures, includes:

[0023] S1: Open a conveying trough on the constructed rock-filled roadbed, then fix the limiting frame on the completed rock-filled roadbed, and move the conveying pipe into the conveying trough;

[0024] S2: Pour the crushed stone into the designated frame. The crushed stone is poured in layers and then flattened.

[0025] S3: After the crushed stone compaction strength reaches the design value, the prepared cement mortar is fed into the conveying pipe and grouting pipe through the conveying pump. When the conveying pressure of the conveying pump rises, the connecting rope on one side of the conveying pipe is pulled. The connecting rope drives the closing plate to slide and open the grout outlet. The mortar enters the gap between adjacent crushed stones under a certain pressure and fills the gap between the crushed stones.

[0026] S4: When the delivery pressure of the delivery pump decreases, pull the connecting rope on the other side of the delivery pipe. The connecting rope will drive the closing plate to close the grout outlet. Then repeat step S3 to complete the grouting operation.

[0027] S5: After the cement mortar has set, repeat steps S1-S4 to complete the embankment construction.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. During embankment filling construction, a retaining frame is placed on the completed embankment and fixed in place. Crushed stone is then poured into the retaining frame, leveled, and compacted. After compaction, a pump is connected to a delivery pipe to deliver prepared cement mortar. The cement mortar is injected through outlet holes into the gaps between the crushed stones. Once the cement mortar has solidified, it fills the gaps between adjacent stones, reducing the gaps between adjacent stones and thus lowering the likelihood of roadbed settlement due to stone breakage under load and rainwater, thereby improving roadbed stability. Simultaneously, the delivery pipe is located within the stone-filled roadbed, reducing the possibility of vibration between the compacted stones caused by openings in the roadbed compared to injecting mortar through openings, thus ensuring the compaction of the stone-filled roadbed and further improving its stability.

[0030] 2. The delivery pipe is connected to the lower layer of stone-filled roadbed after construction. During the cement mortar injection process, some cement mortar flows towards the lower layer of stone-filled roadbed. During the grouting process of the lower layer of stone-filled roadbed, the upper crushed stone layer is prone to insufficient grouting pressure, making it difficult for cement mortar to enter the crushed stone layer, thus affecting the stability of the stone-filled roadbed. When the cement mortar flows towards the lower layer of stone-filled roadbed, it fills the gaps between the crushed stone layers above the lower layer of stone-filled roadbed, thereby improving the stability of the lower layer of roadbed.

[0031] 3. After the conveying pipe is laid on the lower layer of stone-filled subgrade, during the crushing of the crushed stone, crushed stone powder or small particles may easily enter the conveying pipe through the grout outlet. Under the action of the closing plate, the grout outlet is sealed, reducing the possibility of blockage in the conveying pipe. Furthermore, during the cement mortar grouting process, the closing plate closes the grout outlet, causing the grouting pressure of the cement mortar to gradually increase. Then, the connecting rope is pulled, and the connecting rope drives the closing plate to slide and open the grout outlet. Under high pressure, the cement mortar moves out of the conveying pipe, thus facilitating the cement mortar to enter the gaps between the crushed stones over a large area to fill the gaps between the crushed stones. Furthermore, the middle part of the closing plate is a rigid plate, which supports the conveying pipe and reduces the possibility of the conveying pipe being flattened during the crushed stone layer's compaction, thus facilitating the grouting of cement mortar. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the structure of the limiting frame and the lower rock-fill roadbed in the embodiments of this application;

[0034] Figure 3 This is a schematic diagram of the conveying pipe in an embodiment of this application;

[0035] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0036] Explanation of reference numerals in the attached diagram: 1. Rock-filled roadbed; 111. Limiting frame; 112. Crushed stone;

[0037] 2. Conveying pipe; 3. Slurry outlet; 4. Conveying trough;

[0038] 5. Closed plate; 51. Rigid plate; 52. Rubber plate;

[0039] 6. Connecting rope; 7. Through hole; 8. Grouting pipe. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0041] This application discloses a high embankment road embankment structure. (Refer to...) Figure 1 The high embankment road structure includes a multi-layer stone-filled roadbed 1. The multi-layer stone-filled roadbed 1 is compacted in layers along the vertical direction. The cross section of the stone-filled roadbed 1 gradually decreases along the vertical direction and in the direction away from the ground to improve the stability of the stone-filled roadbed 1. The stone-filled roadbed 1 includes a limiting frame 11 and crushed stone 12 placed on the lower stone-filled roadbed 1. The limiting frame 11 is rectangular, and the crushed stone 12 is placed in the space of the limiting frame 11. The crushed stone 12 is compacted after being placed in the limiting frame 11.

[0042] Reference Figure 2 The stone-filled roadbed 1 also includes a conveying pipe 2 set in the limiting frame. The conveying pipe 2 is a steel pipe and is used to convey cement mortar. The two ends of the conveying pipe 2 are located on the side frame of the limiting frame 11 and on the side frame parallel to the length direction of the roadbed. The conveying pipe 2 is supported on the lower stone-filled roadbed 1. Multiple grout outlet holes 3 are opened on the peripheral wall of the conveying pipe 2. The grout outlet holes 3 are evenly arranged along the length direction and circumference of the conveying pipe 2.

[0043] During the construction of the rock-filled roadbed 1, the limiting frame 11 is fixed on the lower rock-filled roadbed 1, and then the conveying pipe 2 is laid on the surface of the lower rock-filled roadbed 1. Then, 12 pieces of crushed stone are poured into the limiting frame 11, and the crushed stone 12 poured into the limiting frame 11 is leveled and compacted. Then, crushed stone 12 is poured on the compacted crushed stone 12 layer and compacted again until the height of the crushed stone 12 layer is equal to the height of the limiting frame 11. Then, cement mortar is injected into the conveying pipe 2. The cement mortar enters the crushed stone 12 layer through the grout outlet 3 to fill the gaps between the crushed stones 12, thereby reducing the possibility of crushed stone 12 breaking and thus reducing the possibility of roadbed settlement.

[0044] Reference Figure 2To reduce the possibility of deformation of the conveying pipe 2 during the compaction of the crushed stone 12, a conveying trough 4 for accommodating the conveying pipe 2 is provided on the top surface of the lower-level stone-filled roadbed 1. The depth of the conveying trough 4 is equal to or greater than the outer diameter of the conveying pipe 2. After the conveying pipe 2 is laid on the lower-level stone-filled roadbed 1, it is moved into the conveying trough 4. After the conveying pipe 2 is placed in the conveying trough 4, the force exerted by the crushed stone 12 on the conveying pipe 2 is reduced during the compaction of the crushed stone 12, thereby reducing the possibility of damage to the conveying pipe 2. At the same time, the direct force exerted by the compactor on the conveying pipe 2 is reduced after the conveying pipe 2 is placed in the conveying trough 4, further reducing the possibility of damage to the conveying pipe 2. Meanwhile, the conveying pipe 2 is located inside the conveying trough 4. During the grouting process, cement mortar enters the lower layer of stone-filled roadbed 1 through the grout outlet 3, filling the gaps between the crushed stones 12 in the upper part of the lower layer of stone-filled roadbed 1, further improving the stability of the roadbed. At the same time, the conveying pipe 2 is roughly placed at the joint of adjacent stone-filled roadbed 1, and the cement mortar connects the joint of adjacent layers of stone-filled roadbed 1, thereby reducing the possibility of slippage and misalignment of adjacent layers of stone-filled roadbed 1, further improving the stability of the stone-filled roadbed 1.

[0045] Reference Figure 2 To increase the effective range of cement mortar on the stone-filled roadbed 1, the conveying pipe 2 is arranged in a serpentine pattern within the limiting frame 11, with both ends of the conveying pipe 2 located on opposite sides of the limiting frame 11. The serpentine arrangement of the conveying pipe 2 increases the area occupied by the conveying pipe 2 on the stone-filled roadbed 1, thereby increasing the number of grout outlet holes 3, and further increasing the effective range of cement mortar to fill the gaps between the crushed stones 12 to the greatest extent.

[0046] Reference Figure 3 and Figure 4 To reduce the possibility of small particles of crushed stone 12 or crushed stone powder entering the conveying pipe 2 during the dumping and crushing process of crushed stone 12, multiple closing plates 5 are provided on the inner wall of the conveying pipe 2. The closing plates 5 correspond one-to-one with the slurry outlet 3. The closing plates 5 are used to block the slurry outlet 3. The closing plates 5 are tightly attached to the inner wall of the conveying pipe 2. Furthermore, the closing plates 5 are slidably disposed in the conveying pipe 2. The sliding direction of the closing plates 5 is parallel to the length direction of the conveying pipe 2. It also includes a driving component for driving the closing plates 5 to slide and open the slurry outlet 3.

[0047] Reference Figure 3 and Figure 4 The driving component includes a connecting rope 6 disposed between adjacent closed plates 5. In this embodiment, the connecting rope 6 is a steel wire rope, which has the advantages of high load capacity and difficulty in breaking. The connecting rope 6 located on the closed plate 5 near the port of the conveying pipe 2 extends outside the conveying pipe 2.

[0048] During the dumping and compaction of crushed stone 12, the closing plate 5 blocks the grout outlet 3, thereby cutting off the path of crushed stone 12 into the conveying pipe 2, thus reducing the possibility of blockage in the conveying pipe 2; when the cement mortar is injected, the connecting rope 6 is pulled to drive the closing plate 5 to slide, and the sliding of the closing plate 5 opens the grout outlet 3, through which the cement mortar moves out.

[0049] Reference Figure 3 and Figure 4 To reduce the possibility of the closing plate 5 accidentally slipping and opening the grout outlet 3 during the laying of the conveying pipe 2, the closing plate 5 is annular, with its outer diameter equal to the inner diameter of the conveying pipe 2. The middle part of the closing plate 5 is a rigid plate 51, which is used to seal the grout outlet 3. The two sides of the middle part of the closing plate 5 are rubber plates 52, which are annular and abut against the inner wall of the conveying pipe 2. Under the action of the rubber plates 52, the friction between the closing plate 5 and the inner pipe of the conveying pipe 2 is increased, thereby reducing the possibility of the closing plate 5 accidentally slipping inside the conveying pipe 2. Furthermore, the rubber plates 52 are elastic, which facilitates the sliding of the closing plate 5 at the bends of the conveying pipe 2, so as to facilitate the opening and closing of the grout outlet 3. Furthermore, the rigid plate 51 in the middle of the closing plate 5 facilitates the support of the closing plate 5 for the inner wall of the conveying pipe 2, thereby reducing the possibility of pressure damage to the conveying pipe 2 and facilitating the conveying of cement mortar.

[0050] Reference Figure 2 and Figure 3 Because the length of the conveying pipe 2 is relatively large, the grouting pressure of the cement mortar in the middle of the conveying pipe 2 is relatively small, making it difficult for the cement mortar to enter the crushed stone 12 layer. In order to ensure that the cement mortar enters the crushed stone 12 layer, a grouting pipe 8 is provided at the curved end of the conveying pipe 2. The grouting pipe 8 is connected to the conveying pipe 2, and the end of the grouting pipe 8 away from the conveying pipe 2 is located within the frame of the limiting frame 11. Under the action of the grouting pipe 8, the injection port of cement mortar is increased, thereby ensuring the grouting pressure of the cement mortar, thus ensuring that the cement mortar enters the crushed stone 12 layer.

[0051] Reference Figure 3 and Figure 4To facilitate grouting, the closing plate 5 can close or open the grout outlet 3 to ensure sufficient pressure for the cement mortar to enter the crushed stone layer 12. A through hole 7 is provided on the side wall of the conveying pipe 2 near its end. The through hole 7 is located outside the frame of the limiting frame 11. A sealing ring is embedded in the through hole 7. The connecting rope 6 passes through the sealing ring and exits the conveying pipe 2. The inner diameter of the sealing ring is smaller than the diameter of the connecting rope 6. After the conveying pipe 2 is connected to the conveying pump, the conveying pump delivers cement mortar into the conveying pipe 2. At this time, the closing plate 5 closes or opens the opening of the conveying pipe 2. As the conveying pipe 2 closes, the grouting pressure inside gradually increases. Then, the connecting rope 6 on one side is pulled, and the connecting rope 6 opens the closing plate 5. At this time, the pressure inside the conveying pipe 2 decreases, forcing the cement mortar out of the grout outlet 3. At this time, the conveying pump increases the conveying pressure to ensure that the cement mortar is pressed into the crushed stone layer 12. Then, the connecting rope 6 on the other side is pulled, and the connecting rope 6 drives the closing plate 5 to slide and close the grout outlet 3. After the grout outlet 3 is closed, the pressure inside the conveying pipe 2 increases. The above steps are repeated to press the cement mortar into the crushed stone layer 12.

[0052] The implementation principle of a high embankment road embankment structure in this application is as follows:

[0053] During the construction of the rock-filled roadbed 1, the limiting frame 11 is fixed on the lower rock-filled roadbed 1, and then the conveying pipe 2 is laid on the surface of the lower rock-filled roadbed 1. Then, 12 pieces of crushed stone are poured into the limiting frame 11, and the crushed stone 12 poured into the limiting frame 11 is leveled and compacted. Then, crushed stone 12 is poured on the compacted crushed stone 12 layer and compacted again until the height of the crushed stone 12 layer is equal to the height of the limiting frame 11. Then, cement mortar is injected into the conveying pipe 2. The cement mortar enters the crushed stone 12 layer through the grout outlet 3 to fill the gaps between the crushed stones 12, thereby reducing the possibility of crushed stone 12 breaking and thus reducing the possibility of roadbed settlement.

[0054] This application discloses a construction process for high embankment road embankment structures, including:

[0055] S1: Open a conveying trough 4 on the constructed rock-filled roadbed 1, then fix the limiting frame 11 on the completed rock-filled roadbed 1, and move the conveying pipe 2 into the conveying trough 4.

[0056] S2: Pour the crushed stone 12 into the limiting frame 11. The crushed stone 12 is poured in layers and then flattened.

[0057] S3: After the crushed stone 12 reaches the design value, pull the connecting rope 6. The connecting rope 6 drives the closing plate 5 to move along the conveying pipe 2, and opens the slurry outlet 3.

[0058] S4: The prepared cement mortar is fed into the delivery pipe 2 and the grouting pipe 8 through the delivery pump. The cement mortar is moved out through the grout outlet 3 and enters the gap between the crushed stones 12. After the cement mortar solidifies, it fills the gap between the crushed stones 12.

[0059] S5: After the cement mortar has set, repeat steps S1-S4 to complete the embankment construction.

[0060] This application discloses a construction process for a high embankment road embankment, used for constructing a high embankment road embankment structure, including: S1: opening a conveying trough 4 on the constructed rock-filled roadbed 1, then fixing a limiting frame 11 on the completed rock-filled roadbed 1, and moving the conveying pipe 2 into the conveying trough 4;

[0061] S2: Pour the crushed stone 12 into the limiting frame 11. The crushed stone 12 is poured in layers and then flattened.

[0062] S3: After the crushed stone 12 reaches the design strength, the prepared cement mortar is fed into the conveying pipe 2 and the grouting pipe 8 through the conveying pump. When the conveying pressure of the conveying pump rises, the connecting rope 6 on one side of the conveying pipe 2 is pulled. The connecting rope 6 drives the closing plate 5 to slide and open the grout outlet 3. The mortar enters the gap between adjacent crushed stones 12 under a certain pressure and fills the gap between the crushed stones 12.

[0063] S4: When the delivery pressure of the delivery pump decreases, pull the connecting rope 6 on the other side of the delivery pipe 2. The connecting rope 6 drives the closing plate 5 to close the grout outlet 3. Repeat step S3 to complete the grouting operation.

[0064] S5: After the cement mortar has set, repeat steps S1-S4 to complete the embankment construction.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high embankment road structure, characterized by: The roadbed includes a multi-layered stone-filled roadbed (1), wherein the multi-layered stone-filled roadbed (1) is compacted in layers along the vertical direction. The stone-filled roadbed (1) includes a limiting frame (11) and crushed stone (12) placed on the lower stone-filled roadbed (1). The crushed stone (12) is placed in the space of the limiting frame (11) and compacted after being placed in the limiting frame (11). The stone-filled roadbed (1) also includes a conveying pipe (2) set in the limiting frame. The conveying pipe (2) is used to convey cement mortar. The two ends of the conveying pipe (2) are located on the edge of the limiting frame (11) and on the edge parallel to the length direction of the roadbed. The conveying pipe (2) is supported on the lower stone-filled roadbed (1). Multiple grout outlet holes (3) are opened on the peripheral wall of the conveying pipe (2). The grout outlet holes (3) are evenly arranged along the length direction and circumferential direction of the conveying pipe (2). The grout outlet (3) of the conveying pipe (2) is closed during the crushed stone filling and compaction process, but can be opened during the grouting stage; The inner wall of the conveying pipe (2) is provided with a plurality of closing plates (5), each of which corresponds to a slurry outlet (3). The closing plates (5) are used to block the slurry outlet (3). The closing plates (5) are slidably disposed inside the conveying pipe (2). The sliding direction of the closing plates (5) is parallel to the length direction of the conveying pipe (2). The pipe also includes a driving component for driving the closing plates (5) to slide and open the slurry outlet (3). The drive unit includes a connecting rope (6) disposed between adjacent closing plates (5), with the connecting rope (6) located on the closing plate (5) near the port of the conveying pipe (2) extending outside the conveying pipe (2).

2. A high fill embankment structure as claimed in claim 1, wherein: The conveying pipe (2) is arranged in a serpentine pattern within the limiting frame (11), with the two ends of the conveying pipe (2) located on opposite sides of the limiting frame (11).

3. A high fill embankment structure as claimed in claim 1, wherein: The top surface of the lower-level stone-filled roadbed (1) is provided with a conveying trough (4) for accommodating the conveying pipe (2), and the depth of the conveying trough (4) is equal to or greater than the outer diameter of the conveying pipe (2).

4. The high embankment road embankment structure according to claim 1, characterized in that: The closing plate (5) is annular, and the outer diameter of the closing plate (5) is equal to the inner diameter of the conveying pipe (2). The middle part of the closing plate (5) is a rigid plate (51). The middle part of the closing plate (5) is used to block the slurry outlet (3). The two sides of the middle part of the closing plate (5) are rubber plates (52).

5. A high fill embankment structure as claimed in claim 2, wherein: The curved end of the conveying pipe (2) is provided with a grouting pipe (8), which is connected to the conveying pipe (2). The end of the grouting pipe (8) away from the conveying pipe (2) is located within the frame of the limiting frame (11).

6. A high fill embankment structure as claimed in claim 1, wherein: A through hole (7) is provided on the side wall of the conveying pipe (2) near the port. The through hole (7) is located outside the frame of the limiting frame (11). A sealing ring is embedded in the through hole (7). The connecting rope (6) passes through the sealing ring and exits the conveying pipe (2). The inner diameter of the sealing ring is smaller than the diameter of the connecting rope (6).

7. A construction method for a high embankment road embankment, used for constructing the high embankment road embankment structure as described in claim 1, characterized in that: Also includes; S1: Open a conveying trough (4) on the constructed rock-filled roadbed (1), then fix the limiting frame (11) on the completed rock-filled roadbed (1), and move the conveying pipe (2) into the conveying trough (4); S2: Pour the crushed stone (12) into the limited frame (11). The crushed stone (12) is poured in layers and then flattened. S3: After the crushed stone (12) reaches the design value, the prepared cement mortar is fed into the conveying pipe (2) and the grouting pipe (8) through the conveying pump. When the conveying pressure of the conveying pump rises, the connecting rope (6) on one side of the conveying pipe (2) is pulled. The connecting rope (6) drives the closing plate (5) to slide and open the grout outlet (3). The mortar enters the gap between adjacent crushed stones (12) under a certain pressure and fills the gap between the crushed stones (12). S4: When the delivery pressure of the delivery pump decreases, pull the connecting rope (6) on the other side of the delivery pipe (2). The connecting rope (6) drives the closing plate (5) to close the grout outlet (3). Repeat step S3 to complete the grouting operation. S5: After the cement mortar has set, repeat steps S1-S4 to complete the embankment construction.

Images