CN110552324A - Side slope protection structure capable of underwater construction and construction method thereof - Google Patents
Side slope protection structure capable of underwater construction and construction method thereof Download PDFInfo
- Publication number
- CN110552324A CN110552324A CN201910800008.9A CN201910800008A CN110552324A CN 110552324 A CN110552324 A CN 110552324A CN 201910800008 A CN201910800008 A CN 201910800008A CN 110552324 A CN110552324 A CN 110552324A
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- Prior art keywords
- concrete
- underwater
- slope
- bag
- protection structure
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- Pending
Links
- 238000010276 construction Methods 0.000 title abstract description 22
- 239000004575 stone Substances 0.000 claims abstract description 46
- 239000011435 rock Substances 0.000 claims abstract description 33
- 239000004746 geotextile Substances 0.000 claims abstract description 26
- 239000002344 surface layer Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 238000012876 topography Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 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
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- 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
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
Abstract
the invention discloses a side slope protection structure capable of being constructed underwater, which comprises geotextile, rock blocks, broken stones, earthwork mold bag concrete and gabion gabions. The geotextile is tightly attached to the underwater steep slope to be reinforced and extends to the periphery. The face of the filled rock blocks is a gentle slope which can be stabilized underwater. The gaps between the surface stones are filled with broken stones. Concrete of the earthwork model bag is paved on the broken stone, and the gabion stone cage is pressed on the concrete of the earthwork model bag. A construction method of the slope protection structure capable of underwater construction is also disclosed. The surface layer of the riprap body is wrapped by the geotechnical model bag concrete, so that the rock blocks are prevented from being washed away by water flow, and the legs are stabilized by the gabion, so that a solid slope protection leg protection system can be formed, the firmness and the durability are realized, cofferdams are not needed during construction, the construction period is greatly shortened, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to a side slope protection structure capable of underwater construction and a construction method thereof.
Background
In the process of dyke reinforcement, the side slope of some dykes on the beach is steeper, and the hidden danger of landslide exists. If slope cutting and bank withdrawal are carried out for thick cultivation, the engineering quantity is large, the occupied area is large, and the construction period is long. If vertical reinforcement measures are adopted, such as steel sheet piles and the like, the cost is inevitably high. If the stone is just thrown, the stone is easily washed away by water flow. The slope protection structure capable of being constructed underwater and the construction method thereof can achieve the purpose of reinforcement without arranging a cofferdam and save the cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a side slope protection structure capable of being constructed underwater, which comprises geotextile, rock blocks, broken stones, earthwork mold bag concrete and gabion gabions. The solid slope protection foot protection system is formed by geotextile, rock blocks, broken stones, earthwork mold bag concrete and gabion gabions, and cofferdams are not needed during construction. Novel structure, convenient implementation and low cost.
the purpose of the invention is realized by the following technical scheme:
And sinking the geotextile into the underwater steep slope to be reinforced, and extending the geotextile to the periphery. And throwing the block stones onto the underwater geotextile by using a stone throwing boat, wherein the stone throwing body faces the empty surface to form an underwater stable gentle slope. And filling gaps on the surface layer of the rock blocks by using broken stones on the outer surface of the riprap body. And paving the surface of the rock block with a geotechnical model bag, wherein the model bag extends from the rock-throwing foot to the riverbed. Pumping concrete mixed with a proper amount of non-dispersant into a mold bag on shore, and filling the mold bag tightly. After the concrete is initially set, the gabion is pressed on the outwards extending mould bag concrete and then extends towards the outer riverbed. The solid slope protection foot protection system is formed by geotextile, rock blocks, broken stones, earthwork mold bag concrete and gabion gabions, and cofferdams are not needed during construction.
Preferably, the non-woven geotextile (with the mass of 30g/m 2) is sunk to the riverbed side slope according to the underwater topography of the side slope to be reinforced, and extends for 3m towards the periphery, so that the geotextile can completely hold the settled riprap body and has a certain safety margin.
Preferably, the rock block is thrown out of the rock throwing ship to form a rock throwing body, a gentle slope of 1:3 is formed on the free face of the rock throwing body, and the horizontal width of the top of the rock throwing body is 3 m.
Preferably, the crushed stone is used for filling gaps in the surface layer of the rock blocks and leveling the gaps on the surface layer of the rock blocks, and the thickness of the leveled crushed stone layer is 10 cm.
Preferably, the rectangular filter-point-free die bag made of the cotton fibers has the weight of more than 50g/m 2, the equivalent aperture of not more than 0.2mm, the longitudinal tensile strength of not less than 2300N/5cm and the vertical permeability coefficient of 10 -2 cm/s.
Preferably, the earthwork model bag is paved on the riprap body from the place where the slope toe of the riprap body extends to the river bed for 2m till the junction of the top of the riprap body and the side slope, and the earthwork model bag completely covers the riprap body.
preferably, on shore, controlling the concrete slump to be more than 20 cm., pumping C25 concrete mixed with a proper amount of non-dispersing agent into a mold bag, wherein the concrete output is 30m 3/h, the minimum filling thickness of the mold bag is 0.3m, and the mold bag is tightly filled.
Preferably, after the concrete is initially set, the gabion with the thickness of 0.5m is pressed on the outwards extending mould bag concrete and then extends for 2m towards the outer riverbed.
A construction method of a slope protection structure capable of being constructed underwater is characterized by comprising the following steps:
S1, according to the underwater topography of the side slope to be reinforced, non-woven geotextile (with the mass of 30g/m 2) is sunk to the side slope of the riverbed, and the non-woven geotextile extends for 3m towards the periphery, so that the geotextile can completely hold the settled riprap body and has a certain safety margin.
S2, throwing out the rock blocks from the rock throwing ship to form a rock throwing body, wherein the rock throwing body is faced with a vacant surface to form a gentle slope with the ratio of 1:3, and the horizontal width of the top of the rock throwing body is 3 m.
S3, filling gaps on the surface layer of the block stone with broken stones and leveling the surface layer of the block stone, wherein the thickness of the leveled broken stone layer is 10 cm.
S4, selecting a rectangular filtration-point-free mold bag made of cotton fibers, wherein the weight of the mold bag is more than 50g/m 2, the equivalent aperture is not more than 0.2mm, the longitudinal tensile strength is not less than 2300N/5cm, and the vertical permeability coefficient is 10 -2 cm/s.
And S5, paving a geotechnical model bag to the riprap body from the position, extending 2m from the slope foot of the riprap body to the riverbed, until the junction of the top of the riprap body and the side slope, and enabling the geotechnical model bag to completely cover the riprap body.
S6, on shore, controlling the concrete slump to be more than 20 cm., pumping C25 concrete mixed with a proper amount of non-dispersing agent into a mould bag, wherein the concrete output is 30m 3/h, the minimum filling thickness of the mould bag is 0.3m, and the mould bag is tightly filled.
And S7, after the concrete is initially set, pressing the gabion with the thickness of 0.5m on the outwards extended mould bag concrete, and then extending the gabion to the outer riverbed for 2 m.
Advantageous effects
1. The lump stones are fully utilized, concrete is adopted as little as possible, and the energy-saving and environment-friendly effects are achieved.
2. The underwater construction method can be used for underwater construction, is suitable for various complex terrains, saves the construction cofferdam, accelerates the construction progress and reduces the investment.
3. The geotechnical model bag has certain water permeability, can quickly reduce the water-cement ratio of concrete and accelerate the solidification speed of concrete
Drawings
Fig. 1 is a sectional view of a side slope protection structure capable of underwater construction.
Description of the reference numerals
1. Geotextile, 2, stone blocks, 3, broken stone, 4, earthwork mold bag concrete, 5, gabion
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
The first embodiment is as follows:
As shown in fig. 1, the slope protection structure capable of underwater construction of the invention is composed of geotextile 1, rock blocks 2, broken stones 3, earthwork mold bag concrete 4 and gabion 5, wherein:
1. According to the underwater topography of the side slope to be reinforced, the non-woven geotextile 1 (with the mass of 30g/m 2) is sunk to the side slope of the riverbed and extends for 3m towards the periphery, so that the geotextile 1 can completely hold the settled riprap body and has certain safety margin.
2. And throwing the block stones 2 from the stone throwing ship to form a stone throwing body, wherein the free face of the stone throwing body forms a gentle slope with the ratio of 1:3, and the horizontal width of the top is 3 m.
3. And filling gaps on the surface layer of the stone blocks with broken stones 3 on the outer surface of the stone throwing body, and leveling, wherein the thickness of the leveled broken stone layer is 10 cm.
4. The rectangular filtration-point-free mold bag made of the selected cotton fibers has the weight of more than 50g/m 2, the equivalent aperture of not more than 0.2mm, the longitudinal tensile strength of not less than 2300N/5cm and the vertical permeability coefficient of 10 -2 cm/s.
5. and (3) paving a geotechnical model bag to the riprap body from the position of 2m extending from the slope foot of the riprap body to the riverbed to the junction of the top of the riprap body and the side slope, and enabling the geotechnical model bag to completely cover the riprap body.
6. On shore, controlling the concrete slump to be more than 20 cm., pumping C25 concrete mixed with a proper amount of non-dispersing agent into a mould bag, wherein the concrete output is 30m 3/h, the minimum filling thickness of the mould bag is 0.3m, and the mould bag is tightly filled.
7. After the concrete is initially set, the gabion with the thickness of 0.5m is pressed 5 on the concrete 4 of the earthwork model bag extending outwards, and then the gabion extends 2m towards the external riverbed.
A construction method of a slope protection structure capable of being constructed underwater comprises the following steps:
Step 1, according to the underwater topography of the side slope to be reinforced, sinking non-woven geotextile 1 (with the mass of 30g/m 2) to the side slope of the riverbed, and extending 3m to the periphery, so that the geotextile 1 can completely hold the settled riprap body and has a certain safety margin.
And 2, throwing out the rock blocks 2 from the rock throwing ship to form a rock throwing body, wherein the free face of the rock throwing body forms a gentle slope of 1:3, and the horizontal width of the top is 3 m.
And 3, filling gaps on the surface layer of the stone blocks with broken stones 3 on the outer surface of the riprap body, and leveling, wherein the thickness of the leveled broken stone layer is 10 cm.
And 4, selecting a rectangular filter-point-free mold bag made of cotton fibers, wherein the weight of the rectangular filter-point-free mold bag is more than 50g/m 2, the equivalent aperture is not more than 0.2mm, the longitudinal tensile strength is not less than 2300N/5cm, and the vertical permeability coefficient is 10 -2 cm/s.
And 5, paving a geotechnical model bag on the riprap body from the position, 2m away from the riprap body slope foot to the riverbed, extending to the junction of the top of the riprap body and the side slope, and enabling the geotechnical model bag to completely cover the riprap body.
And 6, on shore, controlling the concrete slump to be more than 20 cm., pumping C25 concrete mixed with a proper amount of non-dispersing agent into a mould bag, wherein the concrete output is 30m 3/h, the minimum filling thickness of the mould bag is 0.3m, and the mould bag is tightly filled.
And 7, after the concrete is initially set, pressing 5 the gabion with the thickness of 0.5m on the soil engineering bag concrete 4 extending outwards, and extending 2m towards the external riverbed.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (7)
1. A side slope protection structure capable of being constructed underwater comprises geotextile, rock blocks, broken stones, earthwork mold bag concrete and gabion. The geotextile is tightly attached to the underwater steep slope to be reinforced and extends to the periphery. The face of the filled rock blocks is a gentle slope which can be stabilized underwater. The gaps between the surface stones are filled with broken stones. Concrete of the earthwork model bag is paved on the broken stone, and the gabion stone cage is pressed on the concrete of the earthwork model bag.
2. the slope protection structure of claim 1, wherein a non-woven geotextile (with a mass of 30g/m 2) is sunk to the side slope of the riverbed according to the underwater topography of the slope to be reinforced, and extends 3m around, so that the geotextile can fully hold the settled riprap body with a certain safety margin.
3. The slope protection structure capable of being constructed underwater according to claim 1, wherein a rubble is thrown from a rubble throwing boat to form a rubble body, the free face of the rubble body forms a gentle slope of 1:3, and the horizontal width of the top is 3 m.
4. The slope protection structure capable of being underwater constructed as claimed in claim 1, wherein the outer surface of the riprap body is leveled by filling gaps in the surface layer of the rock blocks with crushed stones, and the thickness of the leveled crushed stone layer is 10 cm.
5. The slope protection structure capable of being constructed underwater according to claim 1, wherein the earth work bags are paved on the riprap body from the place where the bottom of the riprap body extends to the outer riverbed by 2m until the place where the top of the riprap body meets the slope, and the earth work bags completely cover the riprap body.
6. The slope protection structure capable of being constructed underwater according to claim 1, wherein after the concrete is initially set, gabions with the thickness of 0.5m are pressed on the outwards extended mould bag concrete and then extend for 2m towards the outer riverbed.
7. A method of constructing an underwater slope protection structure according to any one of claims 1 to 6, comprising the steps of:
S1, according to the underwater topography of the side slope to be reinforced, non-woven geotextile (with the mass of 30g/m 2) is sunk to the side slope of the riverbed, and the non-woven geotextile extends for 3m towards the periphery, so that the geotextile can completely hold the settled riprap body and has a certain safety margin.
S2, throwing out the rock blocks from the rock throwing ship to form a rock throwing body, wherein the rock throwing body is faced with a vacant surface to form a gentle slope with the ratio of 1:3, and the horizontal width of the top of the rock throwing body is 3 m.
S3, filling gaps on the surface layer of the block stone with broken stones and leveling the surface layer of the block stone, wherein the thickness of the leveled broken stone layer is 10 cm.
S4, selecting a rectangular filtration-point-free mold bag made of cotton fibers, wherein the weight is more than 50g/m 2, the equivalent aperture is not more than 0.2mm, the longitudinal tensile strength is not less than 2300N/5cm, and the vertical permeability coefficient is 10-2 cm/s.
And S5, paving a geotechnical model bag to the riprap body from the position, extending 2m from the slope foot of the riprap body to the riverbed, until the junction of the top of the riprap body and the side slope, and enabling the geotechnical model bag to completely cover the riprap body.
S6, on shore, controlling the concrete slump to be more than 20 cm., pumping C25 concrete mixed with a proper amount of non-dispersing agent into a mould bag, wherein the concrete output is 30m 3/h, the minimum filling thickness of the mould bag is 0.3m, and the mould bag is tightly filled.
And S7, after the concrete is initially set, pressing the gabion with the thickness of 0.5m on the outwards extended mould bag concrete, and then extending the gabion to the outer riverbed for 2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800008.9A CN110552324A (en) | 2019-08-28 | 2019-08-28 | Side slope protection structure capable of underwater construction and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800008.9A CN110552324A (en) | 2019-08-28 | 2019-08-28 | Side slope protection structure capable of underwater construction and construction method thereof |
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| Publication Number | Publication Date |
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| CN110552324A true CN110552324A (en) | 2019-12-10 |
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| CN201910800008.9A Pending CN110552324A (en) | 2019-08-28 | 2019-08-28 | Side slope protection structure capable of underwater construction and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236151A (en) * | 2020-01-14 | 2020-06-05 | 沧州昊海水利工程质量检测有限公司 | River course slope protection laying construction method for hydraulic engineering |
| CN111778922A (en) * | 2020-06-18 | 2020-10-16 | 上海河道建设有限公司 | Construction method of river basin flood control dam |
| CN114606902A (en) * | 2022-04-20 | 2022-06-10 | 广东省水利水电第三工程局有限公司 | Construction method for mould bag concrete revetment of ultra-deep dynamic water area |
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| US5425597A (en) * | 1992-03-24 | 1995-06-20 | Bestmann; Lothar | Arrangement for shoreline construction, maintenance, and protection, and methods for making and using the same |
| CN202430681U (en) * | 2011-12-20 | 2012-09-12 | 中国华冶科工集团有限公司 | Bank protection structure |
| CN105908676A (en) * | 2016-04-25 | 2016-08-31 | 广东水利电力职业技术学院 | Dike underwater concrete paving construction method |
| CN108930249A (en) * | 2018-07-24 | 2018-12-04 | 交通运输部天津水运工程科学研究所 | A kind of permeable breakwater based on cementingization enrockment |
| CN211113446U (en) * | 2019-08-28 | 2020-07-28 | 广东水利电力职业技术学院（广东省水利电力技工学校） | Side slope protection structure capable of being constructed underwater |
-
2019
- 2019-08-28 CN CN201910800008.9A patent/CN110552324A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425597A (en) * | 1992-03-24 | 1995-06-20 | Bestmann; Lothar | Arrangement for shoreline construction, maintenance, and protection, and methods for making and using the same |
| CN202430681U (en) * | 2011-12-20 | 2012-09-12 | 中国华冶科工集团有限公司 | Bank protection structure |
| CN105908676A (en) * | 2016-04-25 | 2016-08-31 | 广东水利电力职业技术学院 | Dike underwater concrete paving construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236151A (en) * | 2020-01-14 | 2020-06-05 | 沧州昊海水利工程质量检测有限公司 | River course slope protection laying construction method for hydraulic engineering |
| CN111778922A (en) * | 2020-06-18 | 2020-10-16 | 上海河道建设有限公司 | Construction method of river basin flood control dam |
| CN114606902A (en) * | 2022-04-20 | 2022-06-10 | 广东省水利水电第三工程局有限公司 | Construction method for mould bag concrete revetment of ultra-deep dynamic water area |
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