CN102635090A - Surface protection structure suitable for soil base underwater foundation bed with ultrahigh flow rate - Google Patents
Surface protection structure suitable for soil base underwater foundation bed with ultrahigh flow rate Download PDFInfo
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- CN102635090A CN102635090A CN2012101334462A CN201210133446A CN102635090A CN 102635090 A CN102635090 A CN 102635090A CN 2012101334462 A CN2012101334462 A CN 2012101334462A CN 201210133446 A CN201210133446 A CN 201210133446A CN 102635090 A CN102635090 A CN 102635090A
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Abstract
The invention discloses a surface protection structure suitable for a soil base underwater foundation bed with ultrahigh flow rate. The surface protection structure is formed by stacking the following three layers from inside to outside: an inner layer which is a geotextile filled sandbag layer, a middle layer which is a sand rib soft body row layer, and a surface layer which is a concrete block interlocking row layer. The geotextile filled sandbag layer has the functions of protecting and flattening a 'sand cover' of filled sand at the lower part of a closure gap. The sand rib soft body row layer has the function of protecting the 'sand cover', preventing muddy sand in the 'sand cover' from being sucked out under the action of high flow rate impaction and seepage water pressure, and homogenizing the pressure effects of non-uniform load, such as stones at the upper part, on the 'sand cover' at the same time, and is a 'lintel' for the load at the upper part to cross the lapped seam of the 'sand cover' at the lower part. Like an armour, the concrete block interlocking row layer or the concrete hinge row layer has the function of protecting the ultrastrong sand rib soft body row in a lower layer, preventing ripraps and net bag stones from directly puncturing the row in the lower layer, taking effect of a weight at the same time, and guaranteeing the stability of the foundation bed before the net bag stones at the upper part are not loaded.
Description
Technical field
The present invention relates to a kind of be applicable to ultra high rate with or powerful external load percussion under; The surface layer safeguard structure of diving dykes and dams, the mole bedding that weak soil or geotextile filling pipe bag are constructed, the Longkou Di Kan that dams etc. relates in particular to a kind of ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding.
Background technology
For the dykes and dams that risen by the geotextile back-up sand mound basis of on shale beach riverbed, constructing, the importance of its upstream and downstream and self erosion protection is conspicuous.At present; Adopt and throw worker's fabric sand filling pipe bag construction of banketing under water; Under the operating condition of flow velocity 1～2m/s, during extensive ship machine operation waterborne, the planeness of large-scale (yardstick 10m * 10m * more than the 0.5m) geotextile filling sand pocket can be controlled in about 1m; Can overlap by the fissure of displacement between sand pocket, but overlapping the slot is apart from sometimes more than 0.5m; The jackstone planeness generally can be below 0.6m; String bag stone adopts that fixed point is heavy puts, but the phase lap lean on, but the discrepancy in elevation is generally also about 0.6m; Owing to reasons such as current turbidity height, be difficult to underwater structures is carried out comprehensive and accurate measurement and feels construction measurement, detection ten minutes difficulty; Under the effect of reversing current, large tracts of land river bottom protection geotextile soft raft is laid the location more than the land-based area difficulty, and common row's body off normal is at 2～3m.How jettisoning on this dykes and dams base top block (stone), lay large scale structure, the dam foundation is suitably flattened, prevent that the geotextile tube bag from destroying, and protection filling sand do not run off under high flow rate, be a common water conservancy project journey difficult problem.
Summary of the invention
Technical problem to be solved by this invention be to the effect of geotextile filling soil structure high flow rate down the sucking-off of pipe bag silt particle run off and lay block or large scale structure is jettisoninged, when laying to the impact failure requirement of geotextile tube bag, a kind of dive under water ground surface protection structure of bedding of ultra high rate soil matrix that is applicable to is proposed.
Technical problem to be solved by this invention can realize through following technical scheme:
A kind of ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding, pile up from inside to outside by following three layers and to form: innermost layer is a geotextile filling sand pocket layer; The intermediate layer is a sand rib soft raft layer; The top layer is the chain row's layer of concrete block.
In a preferred embodiment of the invention, on chain row's layer of said concrete block or concrete hinge row layer, pile up one deck string bag stone layer or concrete block layer or string bag stone and concrete block composite bed again.
In a preferred embodiment of the invention, the part concrete block in the said concrete block layer can be used the displacement of filling geotextile sand pocket, is beneficial to the construction of injection pile foundation or other penetrability.
In a preferred embodiment of the invention, the concrete block in said string bag stone and the concrete block composite bed can be used the displacement of filling geotextile sand pocket, is beneficial to the construction of injection pile foundation or other penetrability.
In a preferred embodiment of the invention, the concrete block in concrete block in the said concrete block layer or string bag stone and the concrete block composite bed is a rectangle hexahedron concrete block, and rectangle hexahedron concrete block is provided with hanger.
In a preferred embodiment of the invention, the thickness of said string bag stone layer or concrete block layer or string bag stone and concrete block composite bed is 0.6～1.2m.
In a preferred embodiment of the invention, the chain row's layer plane of said concrete block size is identical with the planar dimension of sand rib soft raft layer.
In a preferred embodiment of the invention, said geotextile filling sand pocket layer comprises outer sand pocket and is filled in some small-sized throwing in outer sand pocket worker's fabric filling sand pocket that bankets; The dimensions length of its ectomesoderm sand pocket is for running through whole following current to the cross section, and width is looked and thrown bag operation ship capabilities, should not be less than 20m; The bagging specification of outer sand pocket is 410g/m
2Composite earthwork cloth.
The bagging of said outer sand pocket is composited by woven geotextile of long filament and acupuncture nonweaven geotextile, and wherein the acupuncture nonweaven geotextile is the internal layer of bagging, and the woven geotextile of long filament is the skin of bagging.
In a preferred embodiment of the invention, said geotextile filling sand pocket layer adopts the large-scale ship pursuing-tide construction of arranging.
In a preferred embodiment of the invention, arranging of said sand rib soft raft layer adopted 1300g/m
2Polypropylene filament yarn woven geotextile, its tensile strength are through 360kN/m, latitude 260kN/m; The sand rib diameter 30cm of sand rib soft raft layer, spacing 150cm.
In a preferred embodiment of the invention, when flow velocity during less than 3.5m/s, the sand rib uses cloth for adopting 260g/m
2The woven cloth of polypropylene filament yarn; When flow velocity during more than or equal to 3.5m/s, the sand rib uses cloth to be 260g/m
2Woven cloth of polypropylene filament yarn and 180g/m
2The Compound Fabric that needle punched non-woven fabrics is composited, and needle punched non-woven fabrics places the internal layer of sand rib with cloth, the woven skin that is arranged in the sand rib with cloth of polypropylene filament yarn.
In a preferred embodiment of the invention, the chain row's layer of said concrete block is combined by base cloth and concrete block, and said concrete block is evenly tied up on the base cloth by polypropylene rope.
In a preferred embodiment of the invention, said base cloth adopts 380g/m
2Composite earthwork cloth; The thickness of concrete block is 160mm, and planar dimension is 400mm * 400mm.
In a preferred embodiment of the invention, said string bag stone layer adopts some string bag stone bags stackings to form; Said string bag stone bag is made up of the string bag and the piece stone that is filled in the string bag; The said string bag adopts high-strength medium carbon alloy steel silk or polypropylene rope braiding to form, and the mesh of the string bag is 20～30cm * 20～30cm.
The diameter of said high-strength medium carbon alloy steel silk is 2.5mm.
The diameter of said polypropylene rope is 16mm.
In a preferred embodiment of the invention, the weight of each string bag stone bag is 60t～10t.
Because the maximum anti-impact flow velocity of chain row's layer of concrete block or concrete hinge row layer is no more than 3.5m/s; In a preferred embodiment of the invention, six string bag stone bags are unified into one group, integral hoisting; Fixed point is heavy puts, and the anti-impact that can satisfy 6.5～8m/s flow velocity is stable.
In a preferred embodiment of invention; Owing to adopted technical scheme as above; Ground surface protection structure employing geotextile filling sand pocket layer of the present invention, sand rib soft raft layer, the chain row's layer of concrete block or concrete hinge row layer, string bag stone layer or concrete block layer constitute, and wherein geotextile filling sand pocket layer function is that the back-up sand of bottom, Longkou is played " sand quilt " covering protection and smooth effect.The function of sand rib soft raft layer is protection " a sand quilt "; Prevent that " sand quilt " middle silt particle is by sucking-off under high flow rate impact and the seepage water pressure effect; Inhomogeneous loads such as while homogenizing upper mass stone also are " lintels " that upper load is crossed over bottom " sand quilt " overlapping the slot to the top thorn effect of " sand quilt ".The function that chain row's layer of concrete block or concrete hinge are arranged layer is as armour, and protection lower floor superpower sand rib soft raft is avoided the direct puncture to the row of lower floor of jackstone and string bag stone, plays the ballast effect simultaneously, guarantees bedding stablizing before top string bag stone does not load.The function of string bag stone layer or concrete block layer or string bag stone and concrete block composite bed is to satisfy the bedding anti-impact.
Description of drawings
Fig. 1 is that the superpower flow velocity soil matrix of the embodiment of the invention 1 is dived under water the following current of bedding ground surface protection structure to sectional view.
Fig. 2 is that the superpower flow velocity soil matrix of the embodiment of the invention 2 is dived under water the following current of bedding ground surface protection structure to sectional view.
Fig. 3 is that the superpower flow velocity soil matrix of the embodiment of the invention 1 is dived under water the following current of bedding ground surface protection structure to sectional view.
The specific embodiment
Further specify the present invention below in conjunction with the accompanying drawing and the specific embodiment.
Embodiment 1
Referring to Fig. 1, what provide among the figure is the instance that is applicable to that the ground surface protection structure of ultra high rate soil matrix diving bedding is used in Longkou river bottom protection and frame cage cut-off dam.Ground surface protection structure among the figure piles up from inside to outside by following four layers and forms: innermost layer is a geotextile filling sand pocket layer 10; The intermediate layer is a sand rib soft raft layer 20, and inferior top layer is the chain row's layer 30 of concrete block (a concrete hinge row layer), and the top layer is a string bag stone layer 40.
Geotextile filling sand pocket layer 10 comprises outer sand pocket and is filled in some small-sized throwing in outer sand pocket worker's fabric filling sand pocket that bankets; Its ectomesoderm sand pocket is of a size of 220m * 35m, and the bagging specification of outer sand pocket is 410g/m
2Composite earthwork cloth.The bagging of outer sand pocket is composited by woven geotextile of long filament and acupuncture nonweaven geotextile, and wherein the acupuncture nonweaven geotextile is the internal layer of bagging, and the woven geotextile of long filament is the skin of bagging.Whole geotextile filling sand pocket layer 10 adopts the large-scale ship pursuing-tide construction of arranging.The function of this layer structure is that bottom, Longkou packed sand throwing and filling 50 is played " sand quilt " covering protection and smooth effect.
The elongated 200m that is about of sand rib soft raft layer 20 Parallel to the flow direction is about width 35m (look arrange the ship scale and increase and decrease is arranged); 1300g/m is adopted in arranging of sand rib soft raft layer 20
2Polypropylene filament yarn woven geotextile, its tensile strength are through 360kN/m, latitude 260kN/m; The super-strength geotextiles that this is arranged and seldom uses on the engineering; The sand rib diameter 30cm of sand rib soft raft layer, spacing 150cm.When flow velocity during less than 3.5m/s, the sand rib uses cloth for adopting 260g/m
2The woven cloth of polypropylene filament yarn; When flow velocity during more than or equal to 3.5m/s, the sand rib uses cloth to be 260g/m
2Woven cloth of polypropylene filament yarn and 180g/m
2The Compound Fabric that needle punched non-woven fabrics is composited, and needle punched non-woven fabrics places the internal layer of sand rib with cloth, the woven skin that is arranged in the sand rib with cloth of polypropylene filament yarn.Sand rib soft raft layer 20 is protection " sand quilts "; Prevent that " sand quilt " middle silt particle is by sucking-off under high flow rate impact and the seepage water pressure effect; Inhomogeneous loads such as while homogenizing upper mass stone also are " lintels " that upper load is crossed over bottom " sand quilt " overlapping the slot to the top thorn effect of " sand quilt ".
The chain row's layer 30 of concrete block (concrete hinge row layer) is combined by base cloth and concrete block, and concrete block is evenly tied up on the base cloth by polypropylene rope.Base cloth adopts 380g/m
2Composite earthwork cloth, the thickness of concrete block are 160mm, and planar dimension is 400mm * 400mm.The planar dimension of the chain row's layer 30 row's body of concrete block is identical with sand rib soft raft 20.This layer is arranged function as armour, and protection lower floor superpower sand rib soft raft is avoided the direct puncture to the row of lower floor of jackstone and string bag stone, plays the ballast effect simultaneously, guarantees bedding stablizing before top string bag stone does not load.
String bag stone layer 40 adopts some string bag stone bags to stack and forms; String bag stone bag is made up of the string bag and the piece stone that is filled in the string bag; The string bag adopts high-strength medium carbon alloy steel silk or polypropylene rope braiding to form, and the mesh of the string bag is 20～30cm * 20～30cm.The diameter of high-strength medium carbon alloy steel silk is 2.5mm.The diameter of polypropylene rope is 16mm.The function of string bag stone layer 40 is to satisfy the bedding anti-impact.
The weight of single string bag stone bag is 60t～10t, and 6 string bag stone bags are unified into one group, integral hoisting, and fixed point is heavy puts, and the integral thickness after laying is 0.6～1.2m; Because the chain row's 30 of concrete block maximum anti-impact flow velocity is no more than 3.5m/s, the anti-impact that 6 one 10t string bag stone bags can satisfy 6.5～8m/s flow velocity is stable.If adopt the string bag of substance 60t, its impact resilience is better, but requires higher to the string bag.
Embodiment 2
What provide among the figure is the instance that is applicable to that the ground surface protection structure of ultra high rate soil matrix diving bedding is used in Longkou river bottom protection and frame cage cut-off dam.Ground surface protection structure among the figure piles up from inside to outside by following four layers and forms: innermost layer is a geotextile filling sand pocket layer 10; The intermediate layer is a sand rib soft raft layer 20, and inferior top layer is the chain row's layer 30 of concrete block (a concrete hinge row layer), and the top layer is concrete block layer 40a.
Geotextile filling sand pocket layer 10; The intermediate layer is a sand rib soft raft layer 20, and inferior top layer is that the chain 26S Proteasome Structure and Function of arranging layer 30 (concrete hinge row layer) of concrete block is with embodiment 1.
The function of use of concrete block layer 40a is suitable with string bag stone layer; It also is the ballast erosion control; Its characteristics are that the concrete block that is placed in ad-hoc location can hang out in suitable follow-up phase; And with the displacement of filling geotextile sand pocket, so that from now at this position injection pile foundation or other penetrating structure.
Concrete block in concrete block among the concrete block layer 40a or string bag stone and the concrete block composite bed is a rectangle hexahedron concrete block, and rectangle hexahedron concrete block is provided with hanger.
Embodiment 3
What provide among the figure is the instance that is applicable to that the ground surface protection structure of ultra high rate soil matrix diving bedding is used in Longkou river bottom protection and frame cage cut-off dam.Ground surface protection structure among the figure piles up from inside to outside by following four layers and forms: innermost layer is a geotextile filling sand pocket layer 10; The intermediate layer is a sand rib soft raft layer 20, and inferior top layer is the chain row's layer 30 of concrete block (a concrete hinge row layer), and the top layer is string bag stone and concrete block composite bed 40b.
Geotextile filling sand pocket layer 10; The intermediate layer is a sand rib soft raft layer 20, and inferior top layer is that the chain 26S Proteasome Structure and Function of arranging layer 30 (concrete hinge row layer) of concrete block is with embodiment 1.
The function of use of string bag stone and concrete block composite bed 40b is suitable with string bag stone; It also is the ballast erosion control; Its characteristics are that concrete block is placed in ad-hoc location replacement string bag stone; Can hang out in suitable follow-up phase, and with the displacement of filling geotextile sand pocket, so that from now at this position injection pile foundation or other penetrating structure.
Concrete block or the concrete block in string bag stone and the concrete block composite bed among string bag stone and the concrete block composite bed 40b are rectangle hexahedron concrete block, and rectangle hexahedron concrete block is provided with hanger.
Claims (19)
1. a ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding is characterized in that, piles up from inside to outside by following three layers to form: innermost layer is a geotextile filling sand pocket layer; The intermediate layer is a sand rib soft raft layer, and the top layer is the chain row's layer of concrete block.
2. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 1; It is characterized in that, on chain row's layer of said concrete block or concrete hinge row layer, pile up one deck string bag stone layer or concrete block layer or string bag stone and concrete block composite bed again.
3. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 2 is characterized in that the part concrete block in the said concrete block layer can be used the displacement of filling geotextile sand pocket, is beneficial to the construction of injection pile foundation or other penetrability.
4. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 2; It is characterized in that; Concrete block in said string bag stone and the concrete block composite bed can be used the displacement of filling geotextile sand pocket, is beneficial to the construction of injection pile foundation or other penetrability.
5. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 2; It is characterized in that; Concrete block in concrete block in the said concrete block layer or string bag stone and the concrete block composite bed is a rectangle hexahedron concrete block, and rectangle hexahedron concrete block is provided with hanger.
6. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 2 is characterized in that the thickness of said string bag stone layer or concrete block layer or string bag stone and concrete block composite bed is 0.6～1.2m.
7. according to claim 1 or claim 2 the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding is characterized in that the chain row's layer plane of said concrete block size is identical with the planar dimension of sand rib soft raft layer.
8. according to claim 1 or claim 2 the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding is characterized in that, said geotextile filling sand pocket layer comprises outer sand pocket and is filled in some small-sized throwing in outer sand pocket worker's fabric filling sand pocket that bankets; The dimensions length of its ectomesoderm sand pocket is for running through whole following current to the cross section, and width is looked and thrown bag operation ship capabilities, should not be less than 20m; The bagging specification of outer sand pocket is 410g/m
2Composite earthwork cloth.
9. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 8; It is characterized in that; The bagging of said outer sand pocket is composited by woven geotextile of long filament and acupuncture nonweaven geotextile; Wherein the acupuncture nonweaven geotextile is the internal layer of bagging, and the woven geotextile of long filament is the skin of bagging.
10. according to claim 1 or claim 2 the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding is characterized in that said geotextile filling sand pocket layer adopts the large-scale ship pursuing-tide construction of arranging.
11. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding according to claim 1 or claim 2 is characterized in that, 1300g/m is adopted in arranging of said sand rib soft raft layer
2Polypropylene filament yarn woven geotextile, its tensile strength are through 360kN/m, latitude 260kN/m; The sand rib diameter 30cm of sand rib soft raft layer, spacing 150cm.
12. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 11 is characterized in that, when flow velocity during less than 3.5m/s, the sand rib uses cloth for adopting 260g/m
2The woven cloth of polypropylene filament yarn; When flow velocity during more than or equal to 3.5m/s, the sand rib uses cloth to be 260g/m
2Woven cloth of polypropylene filament yarn and 180g/m
2The Compound Fabric that needle punched non-woven fabrics is composited, and needle punched non-woven fabrics places the internal layer of sand rib with cloth, the woven skin that is arranged in the sand rib with cloth of polypropylene filament yarn.
13. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding according to claim 1 or claim 2 is characterized in that, the chain row's layer of said concrete block is combined by base cloth and concrete block, and said concrete block is evenly tied up on the base cloth by polypropylene rope.
14. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 13 is characterized in that said base cloth adopts 380g/m
2Composite earthwork cloth; The thickness of concrete block is 160mm, and planar dimension is 400mm * 400mm.
15. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 2 is characterized in that said string bag stone layer adopts some string bag stone bags to stack and forms; Said string bag stone bag is made up of the string bag and the piece stone that is filled in the string bag; The said string bag adopts high-strength medium carbon alloy steel silk or polypropylene rope braiding to form, and the mesh of the string bag is 20～30cm * 20～30cm.
16. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 15 is characterized in that the diameter of said high-strength medium carbon alloy steel silk is 2.5mm.
17. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 15 is characterized in that the diameter of said polypropylene rope is 16mm.
18. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 15 is characterized in that the weight of each string bag stone bag is 60t～10t.
19. the ground surface protection structure that is applicable to ultra high rate soil matrix diving bedding as claimed in claim 15 is characterized in that six string bag stone bags are unified into one group, integral hoisting, and fixed point is heavy puts, and the anti-impact that can satisfy 6.5～8m/s flow velocity is stable.
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| CN2012101334462A CN102635090A (en) | 2012-04-28 | 2012-04-28 | Surface protection structure suitable for soil base underwater foundation bed with ultrahigh flow rate |
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| CN2012101334462A CN102635090A (en) | 2012-04-28 | 2012-04-28 | Surface protection structure suitable for soil base underwater foundation bed with ultrahigh flow rate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN114960776A (en) * | 2022-05-09 | 2022-08-30 | 南通市海洋水建工程有限公司 | Anti-scouring protection construction method for large-diameter single-pile foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN114960776A (en) * | 2022-05-09 | 2022-08-30 | 南通市海洋水建工程有限公司 | Anti-scouring protection construction method for large-diameter single-pile foundation |
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Application publication date: 20120815 |