CN111648383A - Internal drainage method for loess high-fill side slope - Google Patents
Internal drainage method for loess high-fill side slope Download PDFInfo
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- CN111648383A CN111648383A CN202010469124.XA CN202010469124A CN111648383A CN 111648383 A CN111648383 A CN 111648383A CN 202010469124 A CN202010469124 A CN 202010469124A CN 111648383 A CN111648383 A CN 111648383A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
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Abstract
The invention discloses a method for discharging water in a loess high-fill side slope body, which belongs to the technical field of drainage of loess high-fill filling foundations and comprises the following steps: s1, processing the original loess filling foundation; s2, filling a first layer of filling side slope bodies; s3, paving a waterproof layer; s4, constructing transverse and longitudinal drainage ditches; s5, constructing a crossroad drainage channel; s6, the longitudinal drainage ditch is communicated with the transverse drainage channel of the road; s7, checking whether the filling side slope body is the top layer; s8, arranging a water-resisting layer and a drainage ditch on the top of the filling side slope; and S9, finishing construction. The invention can effectively simplify the construction process of the traditional large-area permeable layer, reduce the construction workload, improve the operation efficiency, reduce the construction cost, and is economical and practical.
Description
Technical Field
The invention belongs to the technical field of drainage of loess high-fill filling foundations, and particularly relates to a drainage method for the interior of a loess high-fill side slope.
Background
In recent years, filling projects such as 'mountain cutting and ditch filling' and 'flat mountain land building' appear in many areas with few urban construction lands. The engineering is developed properly, so that the urban land shortage is effectively relieved, the urban construction land is increased, and a space is provided for further development of the city. The natural drainage conditions of the high fill engineering in loess areas are changed after filling construction, if the early drainage system in the filling body is unreasonable, surface runoff or underground water is collected, and free water entering the filling body is large in quantity and long in stagnation time. The moisture enclosed in the filling structure can wet all the structural layer materials and the filling structure, so that the strength is reduced, the deformation is increased, the bearing capacity of the filling structure is reduced, the service life is shortened, and the stability of the filling structure is even endangered so that the filling structure cannot be used.
The internal drainage structure of the conventional filling body is a gravel drainage structure. The structure is used for filling a filling body needing to consider internal drainage, and when a certain thickness (generally corresponding to a road) is filled, broken stones with good water permeability are used as the filling material, and a broken stone drainage filter layer is arranged. The structure form is stable and firm in structure and not easy to collapse, but cannot prevent underground water in the filling body from continuously seeping, and the broken stone is used in a large area, so that the construction cost is high. At present, the invention is urgently needed to invent a construction method for drainage of a filling body, which can improve the internal water environment of the filling body and improve the drainage effect of the filling body.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for draining the interior of a loess high-fill side slope body aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for draining water in a loess high-fill side slope body comprises the following steps:
s1, processing the original loess filling foundation;
s2, clearing a construction site, filling a first layer of filling side slope bodies in a layered filling mode, and finishing and filling the side slope bodies;
s3, filling silty clay or red clay with weak water permeability as a waterproof layer in a thickness of 0.5-1 m below the designed elevation of the pavement of the layer, compacting by adopting impact rolling or vibration rolling layering during filling, leveling after compacting, and vibrating and rolling the surface layer to compact the surface layer;
s4, excavating a transverse drainage ditch and a longitudinal drainage ditch on the water-resisting layer, controlling the longitudinal drainage ditch to be arranged along the gradient direction of the longitudinal drainage ditch, wherein the gradient of the longitudinal drainage ditch is 1-2 degrees, and controlling the gradient of the transverse drainage ditch to be zero;
s5, paving geotextile protective layers in the transverse drainage ditch and the longitudinal drainage ditch in a segmented manner, and controlling the overlapping length between two adjacent sections of geotextile protective layers to be not less than 30 cm; filling a coarse grain permeable layer in the geotextile protective layer;
s6, communicating the transverse drainage ditch with the coarse grain permeable layer in the longitudinal drainage ditch, and keeping the elevation of the basal surface at the communication position of the transverse drainage ditch and the longitudinal drainage ditch equal;
s7, excavating a transverse drainage channel groove of the pavement on the pavement;
s8, paving lime soil in the grooves of the transverse drainage channel of the road in sections, and tamping the lime soil to serve as a bottom layer;
s9, constructing a transverse drainage channel of the road by using mortar masonry slurry and rubbles, and reserving a groove communicated with a longitudinal drainage channel;
s10, communicating the horse path end of the longitudinal drainage ditch with the horse-to-transverse drainage channel by adopting a drainage pipe; filling mortar into the gap between the drain pipe and the horizontal drainage channel; respectively building dry masonry rubble top protectors and mortar rubble foot protectors on the left side and the right side of the carriageway;
s11, continuously repeating the steps S2 to S10 until the designed elevation of the loess high filling body is filled;
s12, constructing and filling a slope top water-resisting layer by adopting the method of the step S3;
and S13, constructing and filling the side slope top drainage ditch in the mode of the step S4.
Further, the drainage pipe in the step S10 is a PVC pipe, and before use, the geotextile filter layer is used to seal both ends of the drainage pipe, so as to prevent the vertical drainage ditch and the horizontal drainage ditch from being congested with impurities.
Further, the thickness of the top water-resisting layer of the filling slope in the step S12 is 90-110 cm.
Further, the filled slope top drainage ditch in the step S13 is 5-10 m away from the edge of the filled slope foundation ground.
Furthermore, a water-resisting layer is paved in the top surface of the filling side slope body, and a transverse drainage ditch and a longitudinal drainage ditch are also dug on the water-resisting layer; the top surface of the waterproof layer and the outer edge of the filling side slope body are provided with a road, and a road transverse drainage channel is also arranged on the road; the filling side slope bodies and the water-resisting layers are alternately stacked from bottom to top, and the top of the filling side slope body on the uppermost layer is the water-resisting layer at the top of the filling side slope; the upper surface of the filling side slope top water-resisting layer is used for filling side slope foundation ground, and a filling side slope top drainage ditch is further arranged on the filling side slope top water-resisting layer.
Furthermore, the transverse drainage ditches and the longitudinal drainage ditches are arranged in a grid shape; the transverse drainage ditch and the longitudinal drainage ditch are respectively composed of an outer geotextile protective layer and an inner core coarse grain permeable layer which are sequentially laid from outside to inside; the cross section areas of the transverse drainage ditch and the longitudinal drainage ditch are equal, and the cross sections of the transverse drainage ditch and the longitudinal drainage ditch are all broken stone sections.
Further, the specification of the geotextile in the geotextile protective layer is not less than 300g/m2Tensile strength of not less than 6kN/m and permeability coefficient of 5 × 10-2cm/s～5×10-1cm/s。
Furthermore, the full crushed stone section is a square full crushed stone section, and the size of the section is not less than 0.5m multiplied by 0.5 m; the slope of the longitudinal drainage ditch is arranged along the slope direction of the longitudinal drainage ditch, and the slope of the longitudinal drainage ditch is set to be 1-2 degrees; the gradient of the transverse drainage ditch is 0.
Furthermore, the maximum particle size of the broken stone contained in the coarse-grained permeable layer is not more than 30cm, and the mud content is not more than 7%.
Furthermore, the horizontal drainage channel of the pavement is also arranged in the water-resisting layer and is communicated with the longitudinal drainage channel through a drainage pipe; the bottom of the drain pipe extends into the transverse drainage channel of the horse way.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can effectively simplify the construction process of the traditional large-area permeable layer, reduce the construction workload, improve the operation efficiency, reduce the construction cost, and is economical and practical.
2. The construction method adopted by the invention has simple steps, and the process methods are the same when the transverse and longitudinal drainage ditches are constructed. The water barrier can prevent effectively that natural rainwater from oozing in filling the side slope, avoids engineering later stage water level rise to cause the too big humidifying of engineering to warp and subside, effectively guarantees loess height filling engineering's engineering quality and safety, convenient to popularize and use.
3. According to the drainage structure adopted by the invention, the geotextile protective layer has triple functions of stress buffering, deformation coordination and coarse particle (gravel) filtration, the coarse particle drainage layer is ensured not to be blocked by the geotextile reverse filtration layer, the drainage function is specially born by the coarse particle (gravel) permeable layer, the particle size is large, the porosity is high, the drainage is smooth, the reliability and the stability are realized, and the use effect is good. In the past, drainage in a filling body is arranged in two situations: a. unnecessary waste is caused by the construction cost of full-surface laying and lifting; b. when stones are in short supply, drainage in the filling body is directly omitted, drainage burden on the top surface of the filling body is increased through phase change, and risks of water accumulation and instability of the slope are increased. The invention takes the two aspects into consideration, thereby saving the cost and ensuring the smooth drainage in the slope body.
4. The cross sections of the transverse drainage ditch and the longitudinal drainage ditch are all full-crushed stone sections, the full-crushed stone sections are square full-crushed stone sections, the construction process is simple and convenient, the operability is strong, underground water is timely drained out of a filling body, the drainage problem of the existing loess high-fill filling side slope body can be effectively solved, the excessive humidifying deformation and settlement of the engineering caused by the rise of the water level in the later period of the engineering can be avoided, the excessive reduction of the shear strength of the filling body after the filling body meets water can be prevented, and the stability and the safety of the filling side slope body during the construction period and the operation period can.
5. And a matched water-resisting layer is arranged under each layer of drainage body, and the water-resisting layers correspond to each other one by one and supplement each other, so that the drainage smoothness of each layer of slope body is ensured, and the drainage burden of the lower layer of slope body is reduced.
Drawings
FIG. 1 is a flow chart of the construction method of the present invention.
Fig. 2 is a schematic view of the overall structure of the drainage structure constructed by the present invention.
FIG. 3 is a schematic plan view of the gutters sideways and gutters lengthwise within the drainage structure of the invention.
FIG. 4 is a schematic cross-sectional view of the gutters in the form of gutters and gutters in the interior of the drainage structure of the invention.
Fig. 5 is an enlarged schematic view of a portion a of fig. 2.
FIG. 6 is a schematic view of the inner berm and surrounding structures of the drainage structure of the present invention.
In the figure: 1. filling a side slope body; 2. a water barrier layer; 3. a longitudinal drainage ditch; 4. a horse way; 5. a crossroad transverse drainage channel; 6. a drain pipe; 7. filling a water-resisting layer at the top of the side slope; 8. filling the side slope foundation ground; 9. filling a drainage ditch at the top of the side slope; 10. the direction of the slope; 11. a lateral drainage ditch; 12. a coarse grain water permeable layer; 13. a geotextile protective layer; 14. a geotextile reverse filter layer; 15. protecting the top by dry building rubbles; 16. lime soil; 17. mortar masonry of the slurry stone; 18. the foot is protected by mortar sheet stone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
A drainage structure in a loess high fill filling side slope body comprises a filling side slope body 1, wherein a water-resisting layer 2 is paved in the top surface of the filling side slope body 1, and a transverse drainage ditch 11 and a longitudinal drainage ditch 3 are dug on the water-resisting layer 2; a road 4 is arranged on the top surface of the waterproof layer 2 and the outer edge of the filling side slope body 1, and a road transverse drainage channel 5 is also arranged on the road 4; the filling side slope bodies 1 and the water-resisting layers 2 are alternately stacked from bottom to top, and the top of the filling side slope body 1 on the uppermost layer is a filling side slope top water-resisting layer 7; the upper surface of the filling side slope top water-resisting layer 7 is a filling side slope foundation ground 8, and a filling side slope top drainage ditch 9 is further arranged on the filling side slope top water-resisting layer 7.
The transverse drainage ditches 11 and the longitudinal drainage ditches 3 are arranged in a grid shape; the transverse drainage ditch 11 and the longitudinal drainage ditch 3 are respectively composed of an outer geotextile protective layer 13 and an inner core coarse grain permeable layer 12 which are sequentially paved from outside to inside; the cross sections of the transverse drainage ditches 11 and the longitudinal drainage ditches 3 are equal in area, and the cross sections are all broken stone sections.
The specification of the geotextile in the geotextile protective layer 13 is not less than 300g/m2Tensile strength of not less than 6kN/m and permeability coefficient of 5 × 10-2cm/s～5×10-1cm/s。
The full crushed stone section is a square full crushed stone section, and the size of the section is not less than 0.5m multiplied by 0.5 m; the gradient of the longitudinal drainage ditch 3 is arranged along the gradient direction 10 of the longitudinal drainage ditch 3, and the gradient is set to be 1-2 degrees; the gradient of the transverse drainage ditch 11 is 0.
The crushed stone contained in the coarse grain permeable layer 12 is required to be medium-aged sandstone, has good gradation (the uneven coefficient Cu is more than or equal to 5, the curvature coefficient Cc is 1-3), has the maximum grain diameter of not more than 30cm, and has the mud content of not more than 7%.
The pavement transverse drainage channels 5 are also arranged in the water-resisting layer 2 and are communicated with the longitudinal drainage channels 3 through drainage pipes 6; the bottom of the drain pipe 6 extends into the lateral drainage channel 5 of the roadway.
A method for draining water in a loess high-fill side slope body comprises the following steps:
s1, processing the original loess filling foundation;
s2, clearing a construction site, filling a first layer of filling side slope body 1 in a layered filling mode, and finishing and filling the side slope body 1;
s3, filling silty clay or red clay with weak water permeability as a water-resisting layer 2 in a thickness of 0.5-1 m below the designed elevation of the layer of the pavement 5, compacting by adopting impact rolling or vibration rolling layering during filling, leveling after compacting, and performing vibration rolling on the surface layer to compact the surface layer; the design parameters for the impact or vibration compaction used are shown in table 1 below:
TABLE 1
| Compaction process | Compacting machine | Number of passes of rolling | Thickness of paving and filling |
| Impact rolling | Trilateral impact road roller | 20 to 25 times | 0.6～0.8m |
| Vibration rolling | |
12 to 14 times | 0.4～0.5m |
S4, excavating a transverse drainage ditch 11 and a longitudinal drainage ditch 3 on the water-resisting layer 2, and controlling the longitudinal drainage ditch 3 to be arranged along the gradient direction 10 of the longitudinal drainage ditch 3, wherein the gradient of the longitudinal drainage ditch 3 is 1-2 degrees, and the gradient of the transverse drainage ditch is controlled to be zero;
s5, paving geotextile protective layers 13 in the transverse drainage ditch 11 and the longitudinal drainage ditch 3 in a segmented manner, and controlling the overlapping length between two adjacent sections of geotextile protective layers 13 to be not less than 30 cm; filling a coarse-grained permeable layer 12 in the geotextile protective layer 13;
s6, communicating the transverse drainage ditches 11 with the coarse grain permeable layers 12 in the longitudinal drainage ditches 3, and keeping the elevation of the base surface at the communication positions of the transverse drainage ditches 11 and the longitudinal drainage ditches 3 equal;
s7, excavating a groove of the pavement transverse drainage channel 5 on the pavement 4;
s8, paving lime soil 16 in the grooves of the transverse drainage channel 5 of the road in sections, and tamping the lime soil as a bottom layer;
s9, constructing a transverse drainage channel 5 of the pavement by using the mortar masonry stone slabs 17, and reserving a groove communicated with the longitudinal drainage channel 3;
s10, communicating the end of the horse channel 4 of the longitudinal drainage ditch 3 with the horse-to-transverse drainage channel 5 by adopting a drainage pipe 6; filling mortar into the gap between the pipeline of the drainage pipe 6 and the horizontal drainage channel 5; and building dry rubble tops 15 and grouted rubble feet 18 on the left side and the right side of the carriageway 4 respectively;
s11, continuously repeating the steps S2 to S10 until the designed elevation of the loess high filling body is filled;
s12, constructing and filling the slope top waterproof layer 7 by adopting the method of the step S3;
and S13, constructing and filling the side slope top drainage ditch 9 in the mode of the step S4.
The drainage pipe 6 in the step S10 is a PVC pipe, and before use, both ends of the drainage pipe 6 are capped with geotextile to prevent the longitudinal drainage ditch 3 and the lateral drainage ditch 5 from being congested with sundries.
The thickness of the top water-resisting layer 7 of the filling side slope in the step S12 is 90-110 cm.
And the filled slope top drainage ditch 9 in the step S13 is 5-10 m away from the edge of the filled slope foundation ground 8.
Claims (10)
1. A method for draining water inside a loess high-fill side slope body is characterized by comprising the following steps:
s1, processing the original loess filling foundation;
s2, clearing a construction site, filling a first layer of filling side slope body (1) in a layered filling mode, and finishing and filling the side slope body (1);
s3, filling silty clay or red clay with weak water permeability as a water-resisting layer (2) in a thickness of 0.5-1 m below the designed elevation of the pavement (4), compacting by adopting impact rolling or vibration rolling layering during filling, leveling after compacting, and vibrating rolling the surface layer to compact;
s4, excavating a transverse drainage ditch (11) and a longitudinal drainage ditch (3) on the water-resisting layer (2), and controlling the longitudinal drainage ditch (3) to be arranged along the gradient direction (10) of the longitudinal drainage ditch (3), wherein the gradient of the longitudinal drainage ditch is 1-2 degrees, and the gradient of the transverse drainage ditch is controlled to be zero;
s5, paving geotextile protective layers (13) in the transverse drainage ditch (11) and the longitudinal drainage ditch (3) in a segmented manner, and controlling the overlapping length between two adjacent sections of geotextile protective layers (13) to be not less than 30 cm; filling a coarse-grained permeable layer (12) in the geotextile protective layer (13);
s6, communicating the transverse drainage ditch (11) with the coarse grain permeable layer (12) in the longitudinal drainage ditch (3), and keeping the same height of the base surface at the communication position of the transverse drainage ditch (11) and the longitudinal drainage ditch (3);
s7, excavating a groove of the pavement transverse drainage channel (5) on the pavement (4);
s8, paving lime soil (16) in the grooves of the transverse drainage channel (5) of the road in sections, and tamping the lime soil as a bottom layer;
s9, constructing a transverse drainage channel (5) of the road by using mortar masonry stone chips (17), and reserving a groove communicated with a longitudinal drainage channel (3);
s10, communicating the end of the horse channel (4) of the longitudinal drainage ditch (3) with the horizontal drainage channel (5) of the horse by adopting a drainage pipe (6); filling mortar into the gap between the pipeline of the drainage pipe (6) and the horizontal drainage channel (5); and a dry rubble canopy guard (15) and a grouted rubble toe guard (18) are respectively built on the left side and the right side of the packway (4);
s11, continuously repeating the steps S2 to S10 until the designed elevation of the loess high filling body is filled;
s12, constructing a top water-resisting layer (7) of the filling side slope by adopting the mode of the step S3, wherein the top surface of the top water-resisting layer (7) of the filling side slope is the foundation ground (8) of the filling side slope;
s13, adopting the method of S4 to construct and fill the side slope top drainage ditch (9).
2. The method for internally draining the loess high fill side slope according to claim 1, wherein the drainage pipes (6) in step S10 are PVC pipes, and both ends of the drainage pipes (6) are capped with a geotextile reverse filter (14) before use, thereby preventing the longitudinal drains (3) and the lateral drainage channels (5) from being clogged with impurities.
3. The method for discharging water from the inside of a loess high fill side slope according to claim 2, wherein the thickness of the fill side slope top water barrier (7) in step S12 is 90-110 cm.
4. The method for discharging water from the inside of a loess high fill side slope according to claim 3, wherein the fill side slope top drain (9) of step S13 is located 5 to 10m from the edge of the fill side slope foundation ground (8).
5. The method for draining the interior of a loess high fill slope body according to claim 4, wherein a water-proof layer (2) is laid in the top surface of the fill slope body (1), and transverse drainage ditches (11) and longitudinal drainage ditches (3) are dug in the water-proof layer (2); a pavement (4) is arranged on the top surface of the waterproof layer (2) and the outer edge of the filling side slope body (1), and a pavement transverse drainage channel (5) is further arranged on the pavement (4); the filling side slope bodies (1) and the water-resisting layers (2) are alternately stacked from bottom to top, and the top of the filling side slope body (1) on the uppermost layer is a filling side slope top water-resisting layer (7); the upper surface of the filling side slope top water-resisting layer (7) is a filling side slope foundation ground (8), and a filling side slope top drainage ditch (9) is further arranged on the filling side slope top water-resisting layer (7).
6. The method for draining water from the interior of a loess high-fill slope body according to claim 5, wherein the lateral drains (11) and the longitudinal drains (3) are provided in a lattice shape; the transverse drainage ditch (11) and the longitudinal drainage ditch (3) are respectively composed of an outer geotextile protective layer (13) and an inner core coarse-grained permeable layer (12) which are sequentially paved from outside to inside; the cross section areas of the transverse drainage ditch (11) and the longitudinal drainage ditch (3) are equal, and the cross sections of the transverse drainage ditch and the longitudinal drainage ditch are all broken stone sections.
7. The method for draining water from the interior of a loess high fill side slope according to claim 6, wherein the geotextile size of the geotextile protective layer (13) is not less than 300g/m2Tensile strength of not less than 6kN/m and permeability coefficient of 5 × 10-2cm/s～5×10-1cm/s。
8. The internal drainage method of a loess high fill side slope according to claim 7, wherein the total crushed stone section is a square total crushed stone section having a sectional size of not less than 0.5m x 0.5 m; the gradient of the longitudinal drainage ditch (3) is arranged along the gradient direction (10) of the longitudinal drainage ditch (3), and the gradient of the longitudinal drainage ditch is set to be 1-2 degrees; the gradient of the transverse drainage ditch (11) is 0.
9. The internal drainage structure of a loess high fill reclamation slope according to claim 8, wherein the coarse permeable layer (12) contains crushed stones having a maximum particle size of not more than 30cm and a mud content of not more than 7%.
10. The internal drainage structure of a loess high fill reclamation slope according to claim 9, wherein the drainage channels (5) are also formed in the water-proof layer (2) and are communicated with the longitudinal drainage channels (3) through the drainage pipes (6); the bottom of the drain pipe (6) extends into the transverse drainage channel (5) of the road.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064653A (en) * | 2020-09-21 | 2020-12-11 | 长安大学 | Composite loess slope ecological slope protection method |
| CN116516898A (en) * | 2023-06-30 | 2023-08-01 | 水利部交通运输部国家能源局南京水利科学研究院 | High-groundwater excavation channel side slope drainage system and construction method |
| CN116695746A (en) * | 2023-06-25 | 2023-09-05 | 四川省华地建设工程有限责任公司 | System and method for preventing and controlling groundwater on filling side slope |
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