Water seepage blind ditch for high fill roadbed
By setting up water-seepage blind ditch structures with poured concrete strips, fine filler strips, seepage steel plates, geotextiles and plastic pipe fittings in the blind ditch drainage structure of high-fill roadbed, the problems of sediment in the blind ditch drainage structure are solved, and a more efficient and convenient drainage effect is achieved.
Patent Information
- Application Number
- CN202411811020.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-05-06
AI Technical Summary
The blind ditch drainage structure of the high-fill roadbed is prone to seep into the sediment, resulting in soil loss, limited drainage range, and the water cleanliness after drainage, which requires additional treatment.
By setting up cast concrete strips, fine filler strips, seepage steel plates, geotextiles and plastic pipe fittings, a water seepage blind groove structure is formed. Fine filler strips and plastic pipe fittings are installed in the filler trough for pouring concrete strips, coarse filler strips are used to initially filter water, water seepage steel plates and geotextiles are used to further filter and expand the drainage range, and plastic pipe fittings are used to transport filtered water.
It effectively prevents silt and sand from entering the filter material, expands the drainage range, and improves the cleanliness of water after drainage, reduces the cost of subsequent treatment, and improves the convenience of drainage.
Smart Images
Figure CN119932988A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field related to roadbed drainage, and in particular relates to a seepage blind ditch used for high fill roadbed. Background Art
[0002] Blind ditch is an indispensable and important part of road subgrade, with high drainage efficiency. It is used to drain groundwater and water infiltrated from the ground to prevent the soil subgrade structure from being damaged. In recent years, due to the vigorous development of road construction in my country, many road constructions need to adopt high fill subgrades. Groundwater and seepage water have posed a huge threat to their safety. The uneven settlement of the subgrade caused by them has led to road collapse, causing immeasurable economic losses. In the process of foundation and subgrade construction, there is often groundwater. If the groundwater may affect the bearing capacity of the foundation, blind ditches are often used to lower the groundwater level and drain the groundwater. However, it still has the following disadvantages in actual use: When the blind ditch drainage structure is used, a layer of soil of a certain thickness is generally laid on the top of the filter material. However, in actual use, once there is heavy rain, the soil layer is easy to mix with rainwater and infiltrate into the filter material and mix with the filter material, thereby reducing the drainage capacity and affecting the smoothness of drainage. When the blind ditch drainage structure is used for drainage, it can usually only drain the water on the nearby road surface. After the water flows far away, it will directly flow to other places, which will accelerate the loss of soil near the roadbed and cause damage to the roadbed. During the operation of the blind ditch drainage structure, fillers are usually used directly to filter water. After the water is discharged, a large amount of sediment will still remain in it. After discharge, additional water treatment is required before it can be discharged, and water discharge is not convenient enough. Summary of the invention
[0003] The purpose of the present invention is to provide a seepage blind ditch for high fill roadbed. By arranging cast concrete strips, fine filler strips, seepage steel plates, geotextiles and plastic pipe fittings, the problems of easy infiltration of sediment into the blind ditch drainage structure causing soil loss, limited drainage range, and insufficient water cleanliness during drainage, which requires additional treatment, are solved.
[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a seepage blind ditch for high fill roadbed, comprising a cast concrete strip, a fine filling strip, a seepage steel plate, a geotextile and a plastic pipe fitting, wherein a filling groove is provided at the top center of the cast concrete strip along the length direction, a fine filling strip is movably connected to the inner lower part of the filling groove, a coarse filling strip is provided at the top of the fine filling strip, a plastic pipe fitting is provided through the fine filling strip along the length direction, a plurality of seepage steel plates with their ends in contact with each other are provided at the top of the cast concrete strip, a fitting groove is provided at a short side edge of the top of the seepage steel plate, and the seepage steel plate is far A clamping strip is fixed at the upper edge of one end of the fitting groove, and the clamping strip is clamped in the fitting groove of the adjacent seepage steel plate. A geotextile is commonly arranged on the top of all the seepage steel plates, and a waterproof membrane is fixed at the lower edges on both sides of the geotextile. When working, the fine filler strips and the coarse filler strips are accommodated in the cast concrete strips, the water is preliminarily filtered through the coarse filler strips and the fine filler strips, the top of the cast concrete strip is closed by the seepage steel plate, and the water before entering the seepage steel plate is filtered by the geotextile, and the filtered water in the fine filler strips is transported to the inner drainage pipe through the plastic pipe fittings.
[0005] Furthermore, a plurality of fastening holes are equidistantly provided at the edges of the two long sides of the top of the cast concrete strip, and the fastening holes at the two long sides of the top of the cast concrete strip correspond to each other. The cast concrete strip is movably connected to the expansion bolts through the fastening holes.
[0006] Furthermore, a through hole is formed in the thin filler strip along the length direction, the plastic pipe is movably connected in the through hole, and the thin filler strip accommodates the plastic pipe therein through the through hole.
[0007] Furthermore, through holes are provided at two corners of the water-permeable steel plate near the clamping strip, the through holes correspond to the positions of the fastening holes, expansion bolts are fastened together in the through holes and the fastening holes, and the water-permeable steel plate is movably connected to the expansion bolts via the through holes.
[0008] Furthermore, the water-permeable steel plate has water-permeable openings in a rectangular array in the middle thereof, and all of the water-permeable openings are arranged between two vertical surfaces in the filling groove, and the water-permeable steel plate infiltrates water into the cast concrete strips through the water-permeable openings.
[0009] Furthermore, a receiving hole is provided in the geotextile corresponding to the position of the fastening hole, the top end of the expansion bolt is arranged in the receiving hole, and the geotextile receives the top end of the expansion bolt therein through the receiving hole.
[0010] Furthermore, absorbent sheets are fixed on the top of the two waterproof membranes, and the two absorbent sheets are respectively fixed on both sides of the geotextile. Water is absorbed by the absorbent sheets, so that the water in the soil is concentrated on the geotextile on the permeable steel plate.
[0011] Furthermore, the plastic pipe fitting includes an outer plastic pipe network and an intermediate plastic pipe network. The outer plastic pipe network is movably connected in the through hole. The intermediate plastic pipe network is fixed on the inner wall of the outer plastic pipe network. The wall thickness of the outer plastic pipe network is greater than the wall thickness of the intermediate plastic pipe network. The plastic pipe fitting further filters the filtered water in the fine filler strips through the outer plastic pipe network and then enters the intermediate plastic pipe network.
[0012] Furthermore, an inner drainage pipe is fixed on the inner wall of the middle plastic pipe network, and a plurality of water seepage holes are evenly opened on the circumference of the inner drainage pipe, and the middle plastic pipe network seeps in through the water seepage holes on the inner drainage pipe.
[0013] Furthermore, one end of the inner drain pipe is fixedly connected to a drain sleeve, a sealing adhesive sleeve is fixed on the peripheral side of the drain sleeve, and an outer drain pipe is fixed on the peripheral side of the sealing adhesive sleeve. Water entering the inner drain pipe is transported to the drain sleeve and then transported to the outer drain pipe through the drain sleeve.
[0014] The present invention has the following beneficial effects: The present invention solves the problem of soil loss caused by easy infiltration of sediment in the blind ditch drainage structure by arranging cast concrete strips, fine filling strips, permeable steel plates and geotextiles. After the cast concrete strips are arranged in the grooves opened on the ground, a layer of fine filling strips is immediately laid in the filling groove, and the plastic pipe fittings are arranged on the top of the fine filling strips in the filling groove, and then the fine filling strips are laid until the plastic pipe fittings are completely buried in the suction filling strips in the filling groove, and then the coarse filling strips are filled in the filling groove on the top of the fine filling strips, so that during operation, the water infiltrated into the filling groove can be fully filtered and enter the plastic pipe fittings.
[0015] The present invention solves the problem of limited drainage range of the blind ditch drainage structure by setting cast concrete strips, permeable steel plates and geotextiles. After the concrete is cast, the soil layer is filled and water seeps into the soil layer, and the water enters the water-absorbing sheet. The water is transported to the geotextile above the permeable steel plate through the waterproof membrane on the water-absorbing sheet, so that the drainage range of the blind ditch drainage structure is larger. On this basis, the water-absorbing sheets and waterproof membranes on both sides of the geotextile are replaced with waterproof cloth (such as Fig. 9 The same technical effect can also be achieved.
[0016] The present invention solves the problem that water cleanliness is not high enough during drainage of the blind ditch drainage structure and requires additional treatment by arranging cast concrete strips and fine filler strip plastic pipe fittings. The plastic pipe fittings further filter the water in the fine filler strips through the outer plastic pipe network and then transport it to the middle plastic pipe network. After further filtering the water, the middle plastic pipe network seeps into the inner drainage pipe through the seepage holes on the inner drainage pipe. The water seeped into the inner drainage pipe is transported to the outer drainage pipe through the drainage sleeve. The water is output to the external water outlet structure through the outer drainage pipe, so that the discharged water is relatively clean after drainage, the cost of secondary treatment of the discharged water is reduced, and the convenience of drainage is increased. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0018] Figure 1 It is a stereogram of an assembly structure of a seepage blind ditch for high fill roadbed; Figure 2 A three-dimensional diagram of the structure for pouring concrete strips; Figure 3 It is a three-dimensional diagram of the structure of the fine filler strip; Figure 4 This is a three-dimensional diagram of the water-seepage steel plate structure; Figure 5 This is a three-dimensional diagram of the geotextile structure; Figure 6 It is a three-dimensional diagram of the structure of plastic pipe fittings; Figure 7 It is a three-dimensional diagram of the internal drainage pipe structure; Figure 8 It is a three-dimensional diagram of the external drainage pipe structure; Fig. 9 It is a three-dimensional diagram of the combined structure of geotextile and waterproof fabric in specific embodiment 5.
[0019] Reference numerals: 1. Cast concrete strip; 101. Filling groove; 102. Fastening hole; 2. Fine filling strip; 201. Coarse filling strip; 202. Through hole; 3. Seepage steel plate; 301. Fitting groove; 302. Card strip; 303. Through hole; 304. Seepage opening; 4. Geotextile; 401. Receiving hole; 402. Water-absorbing sheet; 403. Waterproof membrane; 5. Plastic pipe fittings; 501. External plastic pipe network; 502. Intermediate plastic pipe network; 6. Internal drainage pipe; 601. Seepage hole; 602. Drainage sleeve; 7. External drainage pipe; 701. Sealing adhesive sleeve; 8. Expansion bolt; 9. Waterproof cloth. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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. Specific embodiment 1
[0021] See also Figure 1-8 The present invention is a seepage blind ditch for high fill roadbed, comprising a cast concrete strip 1, a fine filling strip 2, a permeable steel plate 3, a geotextile 4 and a plastic pipe fitting 5. A filling groove 101 is provided at the top center of the cast concrete strip 1 along the length direction. When the cast concrete strip 1 is working, the fine filling strip 2 is accommodated therein through the filling groove 101. The cast concrete strip 1 is set in a groove pre-opened on the ground to perform drainage operations. The inner lower part of the filling groove 101 is movably connected with a fine filling strip 2, and the plastic pipe fitting 5 is accommodated therein through the fine filling strip 2, so that the water infiltrated in the fine filling strip 2 enters the plastic pipe fitting 5. A coarse filling strip 201 is provided on the top of the fine filling strip 2, and the water entering the filling groove 101 is preliminarily filtered by the coarse filling strip 201. The plastic pipe fitting 5 is provided through the fine filling strip 2 along the length direction, and the water entering therein is infiltrated into the inner In the drainage pipe 6, a plurality of permeable steel plates 3 with their ends in contact with each other are arranged on the top of the cast concrete strip 1, through which water can penetrate into the filling groove 101 on the concrete strip, an embedding groove 301 is provided at a short side edge of the top of the permeable steel plate 3, and the permeable steel plate 3 embeds a clamping strip 302 therein through the embedding groove 301, and a clamping strip 302 is fixed at the upper edge of the permeable steel plate 3 away from the embedding groove 301, and the clamping strip 302 is clamped in the embedding groove 301 on the adjacent permeable steel plate 3, so that two adjacent permeable steel plates 3 are restricted together, and a geotextile 4 is arranged on the top of all the permeable steel plates 3, and the soil is blocked outside the permeable steel plate 3 by the geotextile 4, and waterproof membranes 403 are fixed at the lower edges on both sides of the geotextile 4, and the water absorbed by the water-absorbing sheet 402 is blocked by the waterproof membrane 403 to prevent the water on the water-absorbing sheet 402 from penetrating under the waterproof membrane 403.
[0022] Specifically, a plurality of fastening holes 102 are equidistantly provided at the edges of the two long sides of the top of the cast concrete strip 1 , and the fastening holes 102 at the two long sides of the top of the cast concrete strip 1 correspond in position, and the cast concrete strip 1 is movably connected to the expansion bolts 8 through the fastening holes 102 .
[0023] Furthermore, a through hole 202 is formed in the thin filler strip 2 along the length direction, and the plastic pipe 5 is movably connected in the through hole 202 . The thin filler strip 2 movably connects the plastic pipe 5 therein via the through hole 202 .
[0024] The operation process of this embodiment is as follows: during operation, after the cast concrete strip 1 is set in the groove opened on the ground, a layer of fine filler strip 2 is immediately laid in the filler groove 101, and the plastic pipe 5 is set on the top of the fine filler strip 2 in the filler groove 101, and then the fine filler strip 2 is laid until the plastic pipe 5 is completely buried in the absorbent filler strip in the filler groove 101, and then the coarse filler strip 201 is filled in the filler groove 101 on the top of the fine filler strip 2, so that during operation, the water that penetrates into the filler groove 101 can be fully filtered and enter the plastic pipe 5. Specific embodiment 2
[0025] See also Figure 1-4 On the basis of the specific embodiment 1, through holes 303 are provided at the two corners of the seepage steel plate 3 near the card strip 302, and the through holes 303 correspond to the positions of the fastening holes 102. Expansion bolts 8 are fastened together in the through holes 303 and the fastening holes 102. The seepage steel plate 3 is movably connected to the expansion bolts 8 through the through holes 303, and the expansion bolts 8 are inserted into the through holes 303 and then inserted into the fastening holes 102. After expansion and fastening, the cast concrete strip 1 is installed between the seepage steel plates 3.
[0026] Specifically, a rectangular array of seepage holes 304 is provided in the middle of the seepage steel plate 3 , and all the seepage holes 304 are arranged between two vertical surfaces in the filling tank 101 . The seepage steel plate 3 infiltrates water on the ground into the filling tank 101 through the seepage holes 304 .
[0027] Furthermore, a receiving hole 401 is opened in the geotextile 4 corresponding to the position of the fastening hole 102 , and the top end of the expansion bolt 8 is arranged in the receiving hole 401 . The geotextile 4 sets the protruding part of the expansion bolt 8 on the permeable steel plate 3 therein through the receiving hole 401 .
[0028] The operation process of this embodiment is as follows: during operation, after the fine filling strips 2 and the coarse filling strips 201 are set in the filling groove 101 on the casting concrete strip 1, the permeable steel plate 3 is placed on the top of the casting concrete strip 1, and the through-holes 303 on the permeable steel plate 3 are aligned with the fastening holes 102 on the casting concrete strip 1, and are placed continuously, and the expansion bolts 8 are inserted into the through-holes 303, and then inserted into the fastening holes 102 on the casting concrete strip after passing through the through-holes 303, and after expansion setting, the casting concrete strip 1 and the permeable steel plate 3 are installed together, and then the geotextile 4 is placed on the permeable steel plate 3, and the receiving holes 401 on the geotextile 4 are put on the outside of the expansion bolts 8 to complete the laying. Specific embodiment three
[0029] See also Figure 1 , 2 5. On the basis of specific embodiment 1 and specific embodiment 2, absorbent sheets 402 are fixed on the top of the two waterproof membranes 403, and the two absorbent sheets 402 are respectively fixed on both sides of the geotextile 4. The waterproof membrane 403 absorbs water in the fill soil through the absorbent sheets 402 and guides it into the geotextile 4 above the permeable steel plate 3.
[0030] The operation process of this embodiment is as follows: after the concrete pouring is completed and the soil layer is filled, the soil layer seeps water and the water enters the absorbent sheet 402 . The water is then transported to the geotextile 4 above the permeable steel plate 3 through the waterproof membrane 403 on the absorbent sheet 402 . Specific embodiment 4
[0031] See also Figure 1 , 3 , 5, 6, 7, 8, on the basis of specific embodiment 1 and specific embodiment 2, the plastic pipe fitting 5 includes an outer plastic pipe network 501 and an intermediate plastic pipe network 502, the outer plastic pipe network 501 is movably connected in the through hole 202, the intermediate plastic pipe network 502 is fixed on the inner wall of the outer plastic pipe network 501, the wall thickness of the outer plastic pipe network 501 is greater than the wall thickness of the intermediate plastic pipe network 502, the plastic pipe fitting 5 further filters the water in the fine filler strips 2 through the outer plastic pipe network 501, and then transports it to the intermediate plastic pipe network 502.
[0032] Specifically, an inner drainage pipe 6 is fixed on the inner wall of the middle plastic pipe network 502 , and a plurality of seepage holes 601 are evenly opened on the circumference of the inner drainage pipe 6 . After further filtering water by the middle plastic pipe network 502 , the water seeps into the inner drainage pipe 6 through the seepage holes 601 on the inner drainage pipe 6 .
[0033] Furthermore, one end of the inner drain pipe 6 is fixedly connected to a drain sleeve 602, a sealing adhesive sleeve 701 is fixed to the peripheral side of the drain sleeve 602, an outer drain pipe 7 is fixed to the peripheral side of the sealing adhesive sleeve 701, the drain sleeve 602 and the outer drain pipe 7 are bonded together by the sealing adhesive sleeve 701, the water infiltrated into the inner drain pipe 6 is transported to the outer drain pipe 7 through the drain sleeve 602, and the water is output to the external water outlet structure through the outer drain pipe 7.
[0034] The operation process of this embodiment is as follows: when working, the plastic pipe fitting 5 further filters the water in the fine filler strips 2 through the outer plastic pipe network 501, and then transports it to the intermediate plastic pipe network 502. After further filtering the water, the intermediate plastic pipe network 502 infiltrates into the inner drainage pipe 6 through the seepage holes 601 on the inner drainage pipe 6. The water infiltrated into the inner drainage pipe 6 is transported to the outer drainage pipe 7 through the drainage sleeve 602. The water is output to the external water outlet structure through the outer drainage pipe 7, so that the discharged water is relatively clean after drainage, reducing the cost of secondary treatment of the discharged water. Specific embodiment five
[0035] See also Figure 1 , 5 , 9. On the basis of the specific embodiment three, the water-absorbing sheets 402 and the waterproof membrane 403 on both sides of the geotextile 4 in the embodiment three are replaced by the waterproof cloth 9, and the same technical effect can be achieved. When working, the waterproof cloth 9 directly guides the water in the soil layer to the geotextile 4, and the water is filtered by the geotextile 4 and then seeps into the filling groove 101 through the through hole 303 on the permeable steel plate 3.
[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A seepage blind ditch for high fill roadbed, comprising a cast concrete strip (1), a fine filler strip (2), a seepage steel plate (3), a geotextile (4) and a plastic pipe (5), characterized in that: A filling groove (101) is provided at the center of the top of the cast concrete strip (1) along the length direction, a fine filling strip (2) is movably connected to the inner lower part of the filling groove (101), a coarse filling strip (201) is provided at the top of the fine filling strip (2), a plastic pipe (5) is provided through the fine filling strip (2) along the length direction, a plurality of water-permeable steel plates (3) whose ends are in contact with each other are provided at the top of the cast concrete strip (1), an engaging groove (301) is provided at a short side edge of the top of the water-permeable steel plate (3), a clamping strip (302) is fixed at the upper edge of the water-permeable steel plate (3) away from the engaging groove (301), and the clamping strip (302) is clamped in the engaging groove (301) on the adjacent water-permeable steel plate (3), a geotextile (4) is provided on the top of all the water-permeable steel plates (3), and a waterproof membrane (403) is fixed at the lower edges of both sides of the geotextile (4).
2. The seepage blind ditch for high fill roadbed according to claim 1, characterized in that: A plurality of fastening holes (102) are equidistantly provided at the edges of the two long sides of the top of the cast concrete strip (1), and the fastening holes (102) at the two long sides of the top of the cast concrete strip (1) are located at corresponding positions.
3. The seepage blind ditch for high fill roadbed according to claim 1, characterized in that: A through hole (202) is formed in the fine filler strip (2) along the length direction, and the plastic pipe (5) is movably connected in the through hole (202).
4. The seepage blind ditch for high fill roadbed according to claim 2, characterized in that: Through holes (303) are provided at two corners of the water-permeable steel plate (3) close to the clamping strip (302). The through holes (303) correspond to the positions of the fastening holes (102). Expansion bolts (8) are fastened together in the through holes (303) and the fastening holes (102).
5. The seepage blind ditch for high fill roadbed according to claim 1, characterized in that: The water-permeable steel plate (3) has water-permeable openings (304) arranged in a rectangular array in the middle thereof, and all of the water-permeable openings (304) are arranged between two vertical surfaces in the filling groove (101).
6. The seepage blind ditch for high fill roadbed according to claim 4, characterized in that: A receiving hole (401) is provided in the geotextile (4) at a position corresponding to the fastening hole (102), and the top end of the expansion bolt (8) is arranged in the receiving hole (401).
7. The seepage blind ditch for high fill roadbed according to claim 1, characterized in that: A water-absorbing sheet (402) is fixed on the top of each of the two waterproof membranes (403), and the two water-absorbing sheets (402) are respectively fixed on two sides of the geotextile (4).
8. The seepage blind ditch for high fill roadbed according to claim 3, characterized in that: The plastic pipe fitting (5) comprises an outer plastic pipe network (501) and an intermediate plastic pipe network (502); the outer plastic pipe network (501) is movably connected in the through hole (202); the intermediate plastic pipe network (502) is fixed on the inner wall of the outer plastic pipe network (501); and the wall thickness of the outer plastic pipe network (501) is greater than the wall thickness of the intermediate plastic pipe network (502).
9. The seepage blind ditch for high fill roadbed according to claim 8, characterized in that: An inner drainage pipe (6) is fixed on the inner wall of the middle plastic pipe network (502), and a plurality of water seepage holes (601) are evenly arranged on the circumference of the inner drainage pipe (6).
10. The seepage blind ditch for high fill roadbed according to claim 9, characterized in that: One end of the inner drainage pipe (6) is fixedly connected to a drainage sleeve (602), a sealing adhesive sleeve (701) is fixed to the peripheral side of the drainage sleeve (602), and an outer drainage pipe (7) is fixed to the peripheral side of the sealing adhesive sleeve (701).