CN110616672A - Construction method of landscape lake bottom anti-seepage structure - Google Patents
Construction method of landscape lake bottom anti-seepage structure Download PDFInfo
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- CN110616672A CN110616672A CN201910903968.8A CN201910903968A CN110616672A CN 110616672 A CN110616672 A CN 110616672A CN 201910903968 A CN201910903968 A CN 201910903968A CN 110616672 A CN110616672 A CN 110616672A
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- lake
- seepage
- hdpe
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- 238000010276 construction Methods 0.000 title claims abstract description 34
- 229920006262 high density polyethylene film Polymers 0.000 claims abstract description 31
- 239000002689 soil Substances 0.000 claims abstract description 21
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 229910000278 bentonite Inorganic materials 0.000 claims description 10
- 239000000440 bentonite Substances 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 229920001903 high density polyethylene Polymers 0.000 claims description 9
- 239000004700 high-density polyethylene Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 7
- 230000002265 prevention Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009428 plumbing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
The invention relates to the field of engineering construction, aims to solve the problem that the existing lake seepage-proofing structure design does not have enough seepage-proofing capacity, and provides a construction method of a landscape lake bottom seepage-proofing structure, which comprises the following steps: excavating a lake body, leveling and tamping; then laying an HDPE film; the HDPE film is paved in the general sequence of side slope first and field bottom later; treating a side slope anchoring ditch; carrying out GCL construction; backfilling the planting soil, compacting, and paving cobblestones on the planting soil. The invention has the beneficial effect that the invention can be close to the ecology of the natural lake body as much as possible on the basis of ensuring that the lake body has enough anti-seepage performance.
Description
Technical Field
The invention relates to the field of engineering construction, in particular to a construction method of an anti-seepage structure at the bottom of a landscape lake.
Background
In landscape lake construction, the seepage prevention of the lake bottom has higher requirements so as to avoid the excessive rapid loss of lake water. Some lake barrier designs, however, do not have sufficient barrier capacity.
Disclosure of Invention
The invention aims to provide a construction method of an anti-seepage structure at the bottom of a landscape lake, which aims to solve the problem that the existing lake body anti-seepage structure design does not have enough anti-seepage capability.
The embodiment of the invention is realized by the following steps:
a construction method of an anti-seepage structure at the bottom of a landscape lake comprises the following steps:
cleaning large rocks, soil bodies and tree roots at the bottom of the lake after the lake body is excavated, and finishing and flattening the bottom of the lake;
the lake bottom soil is rolled and tamped, and the flatness per square meter is ensured not to exceed 20mm, and no obvious hole is formed;
then laying an HDPE film; the HDPE film is paved in the general sequence that the side slope is firstly paved and then the bottom of the field is paved, and coiled materials are rolled from top to bottom to ensure the smooth paving; no transverse seam appears on the slope, and the extension of the film at the top and the bottom of the side slope is not less than 1.5 m;
treating the side slope anchoring ditch, arranging the anchoring ditch at the revetment position to enable the upper end of the HDPE film to be tightly pressed on the anchoring ditch, and preventing the HDPE from sliding downwards;
performing GCL construction, wherein a bentonite composite waterproof pad is laid on the HDPE film by adopting mechanical laying or manual laying, and the upper end of the GCL is also pressed in the anchoring groove to avoid sliding downwards;
and backfilling the planting soil, namely backfilling the planting soil with the thickness of 400-plus-800 mm after the GCL construction is finished, compacting, and paving cobblestones on the backfilled planting soil.
In one embodiment, the bentonite composite waterproof pad is crumpled on the bottom by 1-2 pieces, and the crumpled length is about 80-150 mm; the laying height of the bentonite composite waterproof pad exceeds the maximum designed water level by 80 mm.
By paving the HDPE film and the GCL layer after leveling and tamping, backfilling the planting soil layer and paving cobblestones, the lake body can be close to the ecology of the natural lake body as much as possible on the basis of ensuring that the lake body has enough seepage-proofing performance.
In one embodiment, for the situation that the water supply and drainage pipes need to be arranged at the bottom of the lake, the water supply and drainage pipes are pre-buried and paved before the HDPE films are paved at the bottom of the lake; the construction key points are as follows: firstly, a horn-shaped pipe sleeve is manufactured by using a HDPE film, the caliber of a small end is consistent with that of a film penetrating pipe, and a large end is divided into 6-8 small pieces, and then the pipe sleeve is sleeved into a water supply pipe and a water discharge pipe in sequence from large to small; the position of the pipe sleeve is adjusted and temporarily stabilized by a hot air cylinder, at the moment, the pipe sleeve cannot be provided with a suspended part, and finally, the large port and the small port of the pipe sleeve are welded on the HDPE film on the slope surface and the water supply and drainage pipe respectively, and a stainless steel belt pipe is additionally arranged at the small end for bundling, and the stainless steel belt is fixed by an expansion bolt.
Through the special prevention of seepage design to plumbing pipe department in this scheme, through the HDPE membrane sleeve pipe of preparation the same material, then realize sealing connection through the mode of seam, can avoid the seepage of juncture well. Due to the complexity of the structure and the high possibility of leakage, the existing scheme has the problem that effective seepage prevention is difficult. And by adopting the special anti-seepage design, the anti-seepage construction at the position can be completed to a great extent.
In one embodiment, for slope corners, the sheet is cut at one corner to form an appropriate trapezoid during laying, and the two sheets are cut at the other corner for splicing. The corner can be accurately matched and attached after being cut, and the operation of hot melting connection is facilitated.
In one embodiment, the HDPE films are welded together by hot melting and overlapping, the overlapping section comprises an inner welding section and an outer welding section, the HDPE film on the upper layer between the inner welding section and the outer welding section protrudes upwards, and an air channel is formed between the HPEP film on the lower layer. The protruding air flue that forms between the seam section in this scheme has higher seam intensity for the welding seam is difficult to throw off more. Additionally, the air passage can also be used to pass gas under pressure to check how firm the weld is, if necessary.
In one embodiment, positioning and paying off are carried out before lake body excavation, bundle work for controlling pile points is carried out according to a 6m multiplied by 6m square grid on the side of a drawing, pile points are made at a certain interval on the uniform elevation layer according to an elevation measuring and laying contour line, an elevation control point is recorded on each pile point, a smooth curve is scattered by lime before construction, and line inspection and elevation rechecking are carried out before artificial lake type arrangement. And the line is positioned and paid off according to the drawing in advance, so that the construction can be guided well.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings referred to in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of a landscape lake bottom seepage-proofing structure constructed by the construction method in the embodiment of the invention;
fig. 2 is a schematic diagram of the manner of arranging water supply and drainage pipes at the side slopes.
Icon: 10-lake bottom soil; 11-HDPE film 12-anchoring grooves; 13-GCL layer; 14-planting soil; 15-cobblestones; 21-water supply and drainage pipes; 22-a pipe sleeve; 23-HDPE films on land; 24-stainless steel band.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present invention do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Examples
With reference to fig. 1, the embodiment provides a construction method of an anti-seepage structure at the bottom of a landscape lake, which includes the following steps:
positioning and paying off are carried out before lake body excavation, bundle-wrapping work for controlling pile points is carried out according to a square grid of 6m multiplied by 6m on the side of a drawing, pile points are made at a certain interval on the uniform elevation layer, elevation control points are recorded on each pile point, a smooth curve is scattered by lime before construction, and line inspection and elevation rechecking are carried out before artificial lake type arrangement. The line is positioned and paid off according to the drawing in advance, so that the follow-up construction can be guided well;
cleaning large rocks, soil bodies and tree roots at the bottom of the lake after the lake body is excavated, and finishing and flattening the bottom of the lake;
the lake bottom soil 10 is rolled and tamped, and the flatness per square meter is ensured not to exceed 20mm, and no obvious hole is formed;
then laying the HDPE film 11; HDPE film 11 is a high density polyethylene film. The HDPE film 11 is paved in the general sequence of firstly paving a slope and then paving a field bottom, and coiled materials are rolled and paved from top to bottom to ensure that the paving is smooth; no transverse seam appears on the slope, and the extension of the film at the top and the bottom of the side slope is not less than 1.5 m;
in this scheme, adopt hot melt overlap joint seam between the adjacent HDPE membrane 11, and the overlap joint section includes inboard seam section and outside seam section, and the HDPE membrane 11 that is located the upper strata between inboard seam section and the outside seam section upwards protruding, and the HPEP that is located the lower floor between the membrane forms the air flue. The protruding air flue that forms between the seam section in this scheme has higher seam intensity for the welding seam is difficult to throw off more. Additionally, the air passage can also be used to pass gas under pressure to check how firm the weld is, if necessary.
Referring to fig. 2, in the case that the water supply and drainage pipes 21 need to be arranged at the bottom of the lake, the water supply and drainage pipes 21 are pre-buried before the HDPE film 11 is laid at the bottom of the lake; the construction key points are as follows: firstly, a pipe sleeve 22 which is made into a horn shape is made of HDPE film, the caliber of a small end is consistent with that of a film penetrating pipe, and a large end is divided into 6-8 small pieces, and then the pipe sleeve 22 is sleeved into the water supply and drainage pipe 21 in sequence from large to small; adjusting the position of the pipe sleeve 22 and temporarily stabilizing the pipe sleeve by using a hot air cylinder, paying attention to the fact that the pipe sleeve 22 cannot have a suspended part, and finally welding the large port and the small port of the pipe sleeve on the HDPE film 23 on the slope surface and the water supply and drainage pipe 21 respectively, additionally arranging a stainless steel belt 24 at the small end for bundling, wherein the stainless steel belt 24 is fixed by expansion bolts. Through the special prevention of seepage design to plumbing 21 department in this scheme, through the 11 sleeves of HDPE membrane of preparation the same material, then realize sealing connection through the mode of seam, can avoid the seepage of juncture well. Due to the complexity of the structure and the high possibility of leakage, the existing scheme has the problem that effective seepage prevention is difficult. And by adopting the special anti-seepage design, the anti-seepage construction at the position can be completed to a great extent.
And for the corners of the slope surface of the side slope, a sheet material is cut off one corner to form a proper trapezoid during laying, and the two sheet materials are cut off the corner to be spliced and connected. The corner can be accurately matched and attached after being cut, so that the operation of hot melting connection is facilitated;
carrying out side slope anchoring ditch 12 treatment, arranging anchoring ditch 12 at the revetment position, and enabling the upper end of HDPE film 11 to be tightly pressed on anchoring ditch 12 to avoid HDPE from sliding downwards;
then, carrying out GCL layer 13 (namely the bentonite composite waterproof pad) construction, adopting mechanical laying or manual laying of the bentonite composite waterproof pad on the HDPE film 11, and pressing the upper end of the GCL in the anchoring groove 12 to avoid sliding down; in one embodiment, the bentonite composite waterproof pad is crumpled on the bottom by 1-2 pieces, and the crumpled length is about 80-150 mm; the laying height of the bentonite composite waterproof pad exceeds the maximum designed water level by 80 mm.
Backfilling the planting soil 14, backfilling the planting soil 14 with the thickness of 400-800mm after GCL construction is finished, tamping, and paving cobblestones 15 on the backfilled planting soil 14.
By paving the HDPE film 11 and the GCL layer 13 after leveling and tamping, backfilling the planting soil 14 layer and paving the cobblestones 15 in the scheme, the ecological lake body can be close to the ecology of the natural lake body as much as possible on the basis of ensuring that the lake body has enough seepage-proofing performance.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A construction method of an anti-seepage structure at the bottom of a landscape lake is characterized by comprising the following steps:
cleaning large rocks, soil bodies and tree roots at the bottom of the lake after the lake body is excavated, and finishing and flattening the bottom of the lake;
the lake bottom soil is rolled and tamped, and the flatness per square meter is ensured not to exceed 20mm, and no obvious hole is formed;
then laying an HDPE film; the HDPE film is paved in the general sequence that the side slope is firstly paved and then the bottom of the field is paved, and coiled materials are rolled from top to bottom to ensure the smooth paving; no transverse seam appears on the slope, and the extension of the film at the top and the bottom of the side slope is not less than 1.5 m;
treating the side slope anchoring ditch, arranging the anchoring ditch at the revetment position to enable the upper end of the HDPE film to be tightly pressed on the anchoring ditch, and preventing the HDPE from sliding downwards;
performing GCL construction, wherein a bentonite composite waterproof pad is laid on the HDPE film by adopting mechanical laying or manual laying, and the upper end of the GCL is also pressed in the anchoring groove to avoid sliding downwards;
and backfilling the planting soil, namely backfilling the planting soil with the thickness of 400-plus-800 mm after the GCL construction is finished, compacting, and paving cobblestones on the backfilled planting soil.
2. The construction method of the seepage-proofing structure at the bottom of the landscape lake or the lake according to claim 1, characterized in that:
the bentonite composite waterproof pad is crumpled on the bottom by 1-2 pieces, and the crumpled length is about 80-150 mm; the laying height of the bentonite composite waterproof pad exceeds the maximum designed water level by 80 mm.
3. The construction method of the seepage-proofing structure at the bottom of the landscape lake or the lake according to claim 1, characterized in that:
for the situation that water supply and drainage pipes need to be arranged at the bottom of a lake, the water supply and drainage pipes are pre-buried and laid before HDPE films are laid at the bottom of the lake; the construction key points are as follows: firstly, a horn-shaped pipe sleeve is manufactured by using a HDPE film, the caliber of a small end is consistent with that of a film penetrating pipe, and a large end is divided into 6-8 small pieces, and then the pipe sleeve is sleeved into a water supply pipe and a water discharge pipe in sequence from large to small; the position of the pipe sleeve is adjusted and temporarily stabilized by a hot air cylinder, at the moment, the pipe sleeve cannot be provided with a suspended part, and finally, the large port and the small port of the pipe sleeve are welded on the HDPE film on the slope surface and the water supply and drainage pipe respectively, and a stainless steel belt pipe is additionally arranged at the small end for bundling, and the stainless steel belt is fixed by an expansion bolt.
4. The construction method of the seepage-proofing structure at the bottom of the landscape lake or the lake according to claim 1, characterized in that:
for the corners of the slope surface, a sheet material is cut off one corner to form a proper trapezoid during laying, and the two sheet materials are cut off the corner to be spliced and connected.
5. The construction method of the seepage-proofing structure at the bottom of the landscape lake or the lake according to claim 1, characterized in that:
adopt hot melt overlap joint seam between the adjacent HDPE membrane, and the overlap joint section includes inboard seam section and outside seam section, and the HDPE membrane that is located the upper strata between inboard seam section and the outside seam section is upwards protruding, and forms the air flue between the HPEP membrane that is located the lower floor.
6. The construction method of the seepage-proofing structure at the bottom of the landscape lake or the lake according to claim 1, characterized in that:
positioning and paying off are carried out before lake body excavation, bundle-wrapping work for controlling pile points is carried out according to a square grid of 6m multiplied by 6m on the side of a drawing, pile points are made at a certain interval on the uniform elevation layer, elevation control points are recorded on each pile point, a smooth curve is scattered by lime before construction, and line inspection and elevation rechecking are carried out before artificial lake type arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910903968.8A CN110616672A (en) | 2019-09-24 | 2019-09-24 | Construction method of landscape lake bottom anti-seepage structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910903968.8A CN110616672A (en) | 2019-09-24 | 2019-09-24 | Construction method of landscape lake bottom anti-seepage structure |
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| CN110616672A true CN110616672A (en) | 2019-12-27 |
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| CN201910903968.8A Pending CN110616672A (en) | 2019-09-24 | 2019-09-24 | Construction method of landscape lake bottom anti-seepage structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2190491C (en) * | 1994-05-16 | 2005-03-01 | Thomas J. Nachtman | Material and method for forming an underwater barrier layer |
| CN106801402A (en) * | 2017-01-18 | 2017-06-06 | 杭州天顺市政园林工程有限公司 | A kind of construction method for the antiseepage of landscape artificial lake |
| CN109252549A (en) * | 2018-09-18 | 2019-01-22 | 上海园林绿化建设有限公司 | A kind of bentonite waterproof blanket and its construction method for man-made lake wetland |
-
2019
- 2019-09-24 CN CN201910903968.8A patent/CN110616672A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2190491C (en) * | 1994-05-16 | 2005-03-01 | Thomas J. Nachtman | Material and method for forming an underwater barrier layer |
| CN106801402A (en) * | 2017-01-18 | 2017-06-06 | 杭州天顺市政园林工程有限公司 | A kind of construction method for the antiseepage of landscape artificial lake |
| CN109252549A (en) * | 2018-09-18 | 2019-01-22 | 上海园林绿化建设有限公司 | A kind of bentonite waterproof blanket and its construction method for man-made lake wetland |
Non-Patent Citations (5)
| Title |
|---|
| 周大纲: "《土工合成材料制造技术及性能 第2版》", 30 April 2019, 中国轻工业出版社 * |
| 四川兴立园林环境工程有限公司: "《西南地区园林景观工艺集锦 兴立园林践行实录》", 31 December 2018, 四川大学出版社 * |
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Application publication date: 20191227 |
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