CN213740901U

CN213740901U - Novel seepage drainage system of earth and rockfill dam

Info

Publication number: CN213740901U
Application number: CN202022757918.4U
Authority: CN
Inventors: 王铭明; 杨双钢; 魏海; 闫毅志
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-20
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a novel seepage drainage system of earth and rockfill dam, it includes the earth and rockfill dam body, earth and rockfill dam body inside has a plurality of "S" type row 'S infiltration pipes that are two multirow settings, "S" type row' S infiltration pipes are provided with a plurality of discharge ports and are responsible for the entrance point that corresponds with the seepage drainage and be linked together, the exit end that the drainage was responsible for runs through earth and rockfill dam body, then lead to and be located the stone drainage infiltration ditch is built to the thick liquid of earth and rockfill dam body low reaches department, the low reaches dam slope department of earth and rockfill dam body is provided with four layers and is on a parallel with the low reaches dam slope of earth and the inverted filter of level setting of earth and rockfill dam body. The utility model discloses well drainage system is used for homogeneity earth and rockfill dam rapid solidification to subside with higher speed, can high-efficient collection and the quick discharge pore water, and the drainage chimney filter is difficult to the physics and blocks up, can also keep earth and rockfill dam infiltration line to be in for a long time lower to guarantee earth and rockfill dam stability.

Description

Novel seepage drainage system of earth and rockfill dam

Technical Field

The utility model relates to an earth and rockfill dam's row oozes the system field, specifically is an earth and rockfill dam's novel row oozes system.

Background

The earth and rockfill dam has the advantages of easy material selection, low manufacturing cost, simple structure and the like, but the seepage problem of the earth and rockfill dam is a key technical problem for reasonable design of water conservancy workers.

The seepage problem of the earth-rock dam causes the underground water level to rise, so that downstream cultivated land is swabbed and salinized, the salinization disaster is serious day by day, and the life and production of downstream residents are influenced; the seepage problem of the earth-rock dam is directly related to the cost and the safety of the earth-rock dam engineering, and many broken or destroyed earth-rock dam engineering at home and abroad are caused by seepage, so that reasonable seepage control is a necessary condition for ensuring the safe operation of the earth-rock dam.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an earth and rockfill dam's novel row oozes system can high-efficiently collect and discharge the pore water fast, and the drainage chimney filter is difficult to the physics and blocks up, can also keep earth and rockfill dam infiltration line to be in for a long time lower to guarantee earth and rockfill dam stability.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an earth and rockfill dam's novel system of oozing of arranging, it includes earth and rockfill dam body, its characterized in that: the earth and rockfill dam is inside to have a plurality ofly to be "S" type row infiltration pipe that two multirow settings were listed as, "S" type row infiltration pipe is provided with a plurality of discharge ports and is linked together with row 'S infiltration person in charge' S entrance point that corresponds, row 'S infiltration person in charge' S exit end runs through earth and rockfill dam body, then leads to and is located the stone row infiltration ditch is built to the thick liquid of earth and rockfill dam body low reaches department, the low reaches dam slope department of earth and rockfill dam body is provided with the quadruple and is on a parallel with the low reaches dam slope of earth and rockfill dam body and the inverted filter layer of level setting.

Further, as preferred, the both ends of "S" type row infiltration pipe all are provided with the shutoff body, the shutoff body includes first shutoff body, non-woven geotechnological cloth and white steel mesh.

Further, as preferred, a plurality of seepage holes are formed in the pipe wall of the S-shaped seepage discharge pipe at equal intervals, and the outer surface of the S-shaped seepage discharge pipe is sequentially wrapped with a geotechnical mat and geotechnical cloth.

Further, as preferred, the main pipe of row oozes adopts the no infiltration hole steel pipe that the diameter is 300 ~ 400 mm.

Further, preferably, the S-shaped drainage and filtration pipe adopts 2/3 seepage holes occupying the perimeter, no seepage hole is arranged on a steel pipe with the diameter of 200-300 mm on one side of the downstream of the dam body of the earth-rock dam, and the arrangement gradient of the S-shaped drainage and filtration pipe is the same as that of the upstream dam slope of the dam body of the earth-rock dam.

The utility model adopts the above technique, compare with current technique and have following beneficial effect:

1. the utility model discloses a drainage system does not have with the help of auxiliary assembly such as vacuum pump to can collect dam body pore water fast also can be fast with pore water removal dam body outside, reach the dam body consolidation with higher speed from this, improve dam body intensity, improve the purpose such as stability of earth and rockfill dam.

2. The seepage drainage system of the utility model mainly comprises two rows and a plurality of rows of S-shaped seepage drainage pipelines parallel to the upstream dam slope of the earth-rock dam, and an externally wrapped geotechnical mat and geotechnical cloth, so as to prevent the physical blockage of the seepage drainage pipes, and the radiation area of the pipelines arranged by the method is wider than that of other seepage drainage modes; and a drainage main pipe which is inclined at an angle of 3-5 degrees and penetrates through the downstream dam slope is communicated with a downstream stone masonry drainage ditch, and 4 layers of reverse filter layers which are horizontal and parallel to the downstream dam slope are arranged at the downstream dam slope, so that the dam body or dam foundation protected soil can be prevented from being separated out along with seepage, and the pore water can be ensured to smoothly flow out.

Drawings

FIG. 1 is a schematic diagram of the overall construction of a novel seepage drainage system for an earth and rockfill dam;

FIG. 2 is a top view of an S-shaped drainage and filtration pipe in the novel drainage and filtration system of an earth and rockfill dam;

FIG. 3 is a schematic structural view of an S-shaped drainage and filtration pipe in the novel drainage and filtration system of an earth and rockfill dam;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure: 1. an S-shaped drainage and infiltration pipe; 2. an earth and rockfill dam body; 3. a main drainage pipe; 4. a stone masonry drainage ditch; 5. a reverse filtering layer; 6. a water seepage hole; 7. a geotechnical mat; 8. geotextile; 9. a first occluding body; 10. non-woven geotextile; 11. a white steel mesh; 12. and (6) infiltrating the lines.

Detailed Description

In combination with the drawings of the embodiments of the present invention, the following will clearly and completely describe the technical solutions of the embodiments of the present invention.

Example (b): referring to fig. 1-4, reference numeral 12 in the drawings is a saturation line, and the present invention provides a technical solution: the utility model provides a novel seepage drainage system of earth and rockfill dam, it includes earth and rockfill dam body 2, earth and rockfill dam body 2 is inside to have a plurality of "S" type row ' S infiltration discharge pipes 1 that are two rows of multirow settings, S "type row ' S infiltration discharge pipes 1 is provided with a plurality of discharge ports and is linked together with row ' S infiltration discharge main pipe 3 corresponding entrance point, the exit end of row ' S infiltration discharge main pipe 3 is 3 ~ 5 slopes and runs through earth and rockfill dam body 2, then lead to the stone masonry row infiltration ditch 4 that is located earth and rockfill dam body 2 low reaches department, the low reaches dam slope department of earth and rockfill dam body 2 is provided with the low reaches dam slope that the four layers is on a parallel with earth and rockfill dam body 2 and the level setting ' S reversed filter layer 5, can prevent earth and rockfill dam body 2 or dam foundation from being separated out along with the infiltration, can guarantee the unblocked outflow of pore water again. Specifically, the S-shaped row infiltration pipes 1 are separated into two rows to prevent uneven settlement; each row of S-shaped row of infiltration pipes 1 are arranged in a crossed manner and are arranged at a distance of 5-7 m.

In this embodiment, the two ends of the "S" shaped infiltration discharge pipe 1 are provided with plugging bodies, and the plugging bodies include a first plugging body 9, a non-woven geotextile 10 and a white steel mesh 11.

In this embodiment, the pipe wall of the S-shaped infiltration discharge pipe 1 is provided with a plurality of infiltration holes 6 distributed at equal intervals, and the outer surface of the S-shaped infiltration discharge pipe 1 is sequentially wrapped with a geotechnical mat 7 and geotechnical cloth 8.

In this embodiment, the main drainage pipe 3 is a steel pipe without a water seepage hole and with a diameter of 300-400 mm.

In the embodiment, 2/3 of the seepage holes occupying the perimeter of the S-shaped seepage discharge pipe 1 are adopted, no seepage holes are arranged on a steel pipe with the diameter of 200-300 mm on one side of the downstream of the earth and rock dam body 2, and the arrangement gradient of the S-shaped seepage discharge pipe 1 is the same as that of the upstream of the earth and rock dam body 2.

In specific implementation, the joint of the S-shaped seepage-discharging pipe 1 and the seepage-discharging main pipe 3 is perpendicular to the S-shaped seepage-discharging pipe 1, and the perpendicular part extends into the S-shaped seepage-discharging pipe 1 at a certain angle, and the specific operation is as shown in FIGS. 1 and 4; and finally, the seepage drainage main pipe 3 penetrates through the earth-rock dam body 2 and discharges the collected seepage water into a masonry drainage ditch.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an earth and rockfill dam's novel system that leaks of arranging, it includes earth and rockfill dam body (2), its characterized in that: earth and rockfill dam body (2) inside have a plurality of "S" type row infiltration pipes (1) that are two multirow settings, "S" type row infiltration pipes (1) are provided with a plurality of discharge ports and are linked together with row ' S infiltration person in charge ' S (3) corresponding entrance point, the exit end of row ' S infiltration person in charge (3) is 3 ~ 5 slopes to run through earth and rockfill dam body (2), then leads to being located the infiltration ditch (4) are arranged to the thick liquid stone of earth and rockfill dam body (2) low reaches department, the low reaches dam slope department of earth and rockfill dam body (2) is provided with the four layers and is on a parallel with the low reaches dam slope of earth and rockfill dam body (2) and the inverted filter (5) that the level set up.

2. The novel seepage drainage system of an earth and rockfill dam as claimed in claim 1, wherein: the two ends of the S-shaped drainage and infiltration pipe (1) are provided with plugging bodies, and each plugging body comprises a first plugging body (9), a non-woven geotextile (10) and a white steel mesh (11).

3. The novel seepage drainage system of an earth and rockfill dam as claimed in claim 2, wherein: a plurality of water seepage holes (6) distributed at equal intervals are arranged on the pipe wall of the S-shaped drainage infiltration pipe (1), and

the outer surface of the S-shaped seepage drainage pipe (1) is sequentially wrapped with a geotechnical mat (7) and geotechnical cloth (8).

4. The novel seepage drainage system of an earth and rockfill dam as claimed in claim 1, wherein: the main drainage and seepage pipe (3) is a steel pipe without seepage holes and with the diameter of 300-400 mm.

5. The novel seepage drainage system of an earth and rockfill dam as claimed in claim 3, wherein: the S-shaped drainage and seepage pipe (1) adopts seepage holes to occupy 2/3 of the perimeter of the S-shaped drainage and seepage pipe, no seepage holes are arranged on a steel pipe with the diameter of 200-300 mm on one side of the downstream of the earth and rock dam body (2), and the arrangement gradient of the S-shaped drainage and seepage pipe (1) is the same as that of the upstream dam slope of the earth and rock dam body (2).