CN100389238C - Flexible dam with aid of buoyancy and its construction method - Google Patents
Flexible dam with aid of buoyancy and its construction method Download PDFInfo
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- CN100389238C CN100389238C CNB02135426XA CN02135426A CN100389238C CN 100389238 C CN100389238 C CN 100389238C CN B02135426X A CNB02135426X A CN B02135426XA CN 02135426 A CN02135426 A CN 02135426A CN 100389238 C CN100389238 C CN 100389238C
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Abstract
The present invention relates to a flexible dam of which the buoyancy can automatically rise and fall along with the fluctuation of the water level. The basic structure of the present invention comprises a dam body, a foundation, anchor bolts and anchor ropes. The dam body of the dam has the structure that light barrels are anchored(fixedly tied) to rubber chinlon composite canvas; the dam is divided into a fixed type and a movable type, wherein the lower end of the dam body of a fixed type dam is anchored to a construction bottom board; the lower end of the dam body of a movable type dam is connected to foundation dam cloth connected with dam body dam cloth into a whole, and a hairlike water resisting layer is attached to the back of the foundation dam cloth; the movable type dam can be rapidly constructed and formed through conjunction and combination; the fixed type dam can be used for the dam construction of rivers, lakes, reservoirs, etc., and can also be used for the construction of tide blocking dams in coastal areas, the operation cofferdam construction of large-sized hydraulic engineering, etc. The movable type dam can be used for rapidly constructing flood control cofferdams and bank emergency water retaining sub banks, and the movable type dam has wide application in the engineering of fighting against the flood emergency.
Description
Affiliated technical field
The present invention relates to a kind of flexible dam, especially can be by the flexible dam of self buoyancy autonomous lifting with the fluctuation of water level.The invention still further relates to two kinds of dissimilar structures, purposes and construction methods thereof of this flexible dam.
Background technology
In the patent application of applying in 27th more in 1999 10 (application number 99112520.7) that is called " blocking system with floating wall " a kind of portable flexible dam by means of buoyancy is disclosed at me---floating wall, floating wall is according to Archimedes' principle, can vertically be suspended in flexible dam in the water by row that utilize the individual mutual tandem compounds of a plurality of combination to form, its technical characterictic: floating wall is formed by a plurality of bodies of wall tandem compound successively, has dash cloth on the one side wall body, dash cloth was rolled over floating wall bottom, and whole the wrapping up of bottom hammer body part of floating wall; Has a hair shape aquiclude in the dash cloth outside of Fu Qiang bottom.The body of wall of floating wall is made of two parts up and down, and the buoyancy aid on top is to do shell with high-intensity engineering plastics, in fill the sealing column staving that lightweight foam material is made, in water, have good buoyancy; The hammer body of lower part is the hollow columnar staving that opening with cover is arranged with the top that high-intensity engineering plastics are made, and the sandstone material of packing in hammer body can make it have big weight; Because the acting in conjunction of buoyancy aid and hammer body, whole body of wall can be suspended in the water vertically, and can vertically be suspended in the water too by the whole floating wall that such body of wall tandem compound successively forms; Control the two ends of floating wall, whole floating wall is fixed in the water,, play the effect of interception current as a wall.
Floating wall is because of its design feature, have many specific uses, wherein an important use can be used for constructing fast flood control (provisional construction) cofferdam exactly, as figure＜1〉shown in, its construction method is as follows: construct at needs on the basic section in flood control cofferdam, the floating wall of assembling one row, the direction that the hammer body part 8 of floating wall is come in face of the flood desire is poured on the base surface backward, is poured on the base surface and buoyancy aid part 7 spread forward in face of the flood direction; Lay row's anchoring pile 9 at the basic upper edge of Fu Qiang front section, at a certain distance the end of hammer body and the top of buoyancy aid are tied up on the anchoring pile with rope 10 respectively.In the Fu Qiang back, pile up two terminations supporting pier 11 and will float wall at the two ends of floating wall at a certain distance near floating wall and fix and shutoff; When flood attacks, the floating body part branch of falling forward in face of flood raises gradually along with the rise of flood, final because the tractive of the rope of Fu Qiang front and the support of Fu Qiang back pier, and floating wall self buoyancy function, floating wall can float formation one stifled cofferdam, and shelves are lived flood.Also the dash small dike can be constructed fast on the dykes and dams end face with the method, in case embankment overflows.
In the design process of above this construction, if I associate with the hammer body part that is fixed on the floating wall of structure base plate replacement on the basis, that is to say that the buoyancy aid part that will float wall directly is anchored on the sole plate, has not floating wall just become " floating dam "?
Simultaneously, in above-mentioned design, utilize floating wall to construct the flood control cofferdam and in design, also exist some defectives, that is exactly: the upper water pressure that is born when floating the wall dash is mainly assigned to bear by the floating body part of floating wall, if buoyancy aid is a whole staving, as accompanying drawing＜1〉shown in, on ladle body, just concentrated bigger stress effect, and dash is heavily stressed more big more, this must all propose high requirement to the structure and the material of buoyancy aid, simultaneously, and effective performance of buoyancy aid buoyancy when this vertical all-in-one-piece float structure also is unfavorable for floating wall shelves water, thereby, be necessary to do further improvement.
Summary of the invention
Task of the present invention is exactly on the basis of floating wall invention, by evolution to floating wall design, design invention is a kind of can independently to rise flexible dam---the buoyancy dam that falls with the fluctuation of water level by buoyancy, and two kinds of introducing the buoyancy dam are multi-form---structure, purposes and the using method on fixed buoyancy dam and portable buoyancy dam.
As figure＜2〉shown in, the structure on fixed buoyancy dam comprises: dam body 1, sole plate 2, crab-bolt 3 and anchor line 4 four parts; The lower end of dam body 1 closely is anchored on the sole plate 2, and the upper end ties up on the crab-bolt 3 before the dam by anchor line 4 bolts, and it is the dash carrier on whole dam, can the autonomous lifting with the fluctuation of water level by the buoyancy of self; The base plate 2 on dam and crab-bolt 3 are reinforced concrete structure, and they provide firm anchoring for the dam body dash.
The design on fixed buoyancy dam is to construct evolution and next the design in flood control cofferdam from floating wall, briefly, it is exactly that row are anchored at floating wall on the sole plate, but the structure of its dam body and the body of wall of floating wall have tangible difference: as figure＜2〉shown in, the structure of the dam body 1 on fixed buoyancy dam comprises floatage body 6 and checkdam cloth 5 two parts.
In the design of floating wall, though two parts up and down of floating wall body of wall all can carry out merogenesis as required, generally speaking, floating wall is to be formed by the mutual tandem compound on broadwise of the staving through making progress; And the dam body on fixed buoyancy dam is just opposite, and its buoyancy system is the regularly arranged result of the staving that distributes on many broadwises 6; I am referred to as " floatage body " to constitute the staving that distributes on these broadwises on fixed buoyancy dam 6, am different from the buoyancy aid of floating wall with this.
In the design of floating wall, floating wall canvas cloth is tied on body of wall, and the water pressure that floating wall is born finally is to be born by the body of wall of connecting; And in the design on fixed buoyancy dam, the floatage body 6 of dam body is directly to be fixed on the checkdam cloth 5, connection by checkdam cloth between the floatage body carries the buoyancy system that constitutes whole dam body, dam body checkdam cloth 5 lower ends closely are anchored on the sole plate 2, the upper end ties up on the crab-bolt 3 before the dam by the anchor line bolt, has realized that thus the anchoring of whole dam body is stable; Here, 5 one-tenth of checkdam cloth the main supporting body in the dam body, floatage body 6 provides buoyancy auxiliary for it.
Buoyancy dam after process is improved like this is when dash, the water pressure that dam body bore is born by checkdam cloth fully, checkdam cloth is main supporting body, this had both helped bringing into play the advantage that dam cloth material (the compound canvas of rubber polyamide fibre) has strong tensile strength, also more help floatage body and when the dam body dash, bring into play its buoyancy, make the stressed more evenly science of dam body, the dash better effects if has effectively overcome the fault of construction that floating wall exists when constructing the cofferdam.
The checkdam cloth 5 of dam body is made by the impermeable material that has than high-tensile, the compound canvas of rubber and polyamide fibre is adopted in suggestion in fixed buoyancy dam, this compound canvas has corrosion-resistant, anti-aging, waterproof, water resistance are good, have higher and stable tensile strength, anti-tear strong good, advantages such as seawater corrosion resistance, be generally used in the construction of rubber dam, can satisfy the carrying needs of buoyancy dam length phase dash fully.
As figure＜3〉shown in, the floatage body 6 of dam body is to do the sealing staving of making towards lightweight foam material 21 in the shell 20 with high-strength engineering plastics, it can be cylinder, but since dam body main supporting body---the compound canvas of rubber polyamide fibre is the flexible thin-film material who has only several millimeters thick, under the dash stress, plastic deformation can take place in dam body dam cloth, thereby makes dam body present arc, and dam body is in the process of the lifting with the fluctuation of water level, and the arc of dam body is often to change; For ensureing that dam body has good stress, the shape of floatage body is designed to the column staving that become with the plane one common peripheral by a plurality of cambered surfaces; Specifically, floatage body has six faces, its back side 12 (both faces that links with dam cloth) is the arc surface of an evagination, positive 13 is planes, two sides 14,15 are arc surfaces of two evaginations up and down, and left and right sides both ends of the surface 16,17 also are the arc surfaces of two evaginations, and the arcuation distortion of dam body had both been complied with in such design, also can avoid dam body in lifting process, produce unnecessary friction between the floatage body, squeeze and bump.
The floatage body on fixed buoyancy dam and dam cloth connection adopt the bolt clip plate anchoring; As figure＜3 〉,＜4 shown in, on the ladle body of floatage body 6, be evenly distributed with several along ladle body and strengthen stirrup 22, the connection backing plate 23 of a band screw is arranged along the staving direction at the back side of floatage body, connect between backing plate 23 and the reinforcement stirrup 22 affixedly, constitute the connection skeleton of floatage body thus; Junction at checkdam cloth and floatage body is carried out reinforcement 24 with dam cloth, and in reinforcement place according to the position boring that connects the backing plate screw, then in the dam cloth outside with bolt 26 and one and floatage body connection backing plate 23 corresponding connection pressing plates 25 with floatage body and dam cloth tightly anchoring get up.
Because fixed buoyancy dam is under actual dash running status, not only to bear the effect of hydrostatic pressure, but also to bear wind, wave, the influence of dynamic loads such as tide, in order to eliminate of the effect of these dynamic loads as much as possible to dam body, prolong the life-span of dam body, adopting following two kinds of methods in the design of dam body: as figure＜2〉shown in, at first the upper end of dam body checkdam cloth is prolonged and dam body floatage body 18 certain-lengths topmost, secondly with dam body shaped design more special of floatage body 18 topmost, its special character as figure＜5 shown in be that the back side 12 of this floatage body is not an arc surface, but a parabola, the two sides 14 of floatage body, 15 also no longer is isometrical arc surface; Such design, make dam body 1 when floating dash, the upper end that checkdam cloth grows is under the tractive of upstream anchor line 4, all the time be not have as in the water, and the part that the dam body top emerges, because the dam body topmost jacking of floatage body 18 presents fairshaped parabola again, this just makes stormy waves can take advantage of a situation when running into dam body and gushes from dam crest, thereby weakens the percussion to dam body.
But like this, under bigger wind wave action, have more water again and overflow from dam crest, this purpose with buoyancy dam dash, protection against the tide does not conform to, we can adopt following three kinds of methods to eliminate respectively or reduce dam crest overflow under the stormy waves situation for this reason, as figure＜9〉shown in:
1, the unrestrained floating mat 39 that disappears is set before the buoyancy dam, with the wind wave action before the reduction dam.The unrestrained floating mat 39 that disappears is to be connected mutually and the floating row's body that floats on the surface that constitutes in parallel by a plurality of keg floats, and the front end of row's body ties up on the floating mat crab-bolt 40 before the dam by anchor line, and the rear end ties up on the dam body by hawser.The shell of floating mat keg float is made by engineering plastics or aluminium plastic material, and part is two-layer up and down in it, and lightweight foam material is being filled on the upper strata, makes staving have certain buoyancy; Lower floor is a cavity, cavity bottom has a unidirectional water inlet 43, one steam vent 44 and staving exterior arranged at the top, as figure＜11〉shown in, when such keg float placed on the water surface, water can be filled with cavity by the water inlet of keg float bottom, thereby makes keg float both have certain buoyancy on the whole, have corresponding weight again, improved its wave absorption and subtracted unrestrained function.
2, the dam crest on the buoyancy dam is provided with wave resistance body 38.The wave resistance body is actual to be exactly the sub-dam body of anchor knot on key dam body top, its structure and dam structure are basic identical, also floatage body by anchoring on the dash cloth constitutes, only its specification is less than the key dam body, the lower end of wave resistance body is anchored at buoyancy dam body top, the upper end ties up to before the dam on the crab-bolt by the anchor line anchor, forms the form of structure on a kind of double-deck buoyancy dam; Under normal dash situation, the wave resistance body is not undertaken the dash task, just dumps forward before the dam on the water surface, and only under wind wave action, the wave resistance body just can be climbed and lifts dash along with stormy waves, thereby plays good wave resistance effect.
3, collecting gutter and drainage pumping plant are set behind the buoyancy dam, will send the dam back to from the water pump that dam crest overflows before.
More than three kinds of methods can be according to circumstances difference and use respectively, the comprehensive use also can combine.This method is equally applicable to the dam crest anti-overflow of rubber dam.
In accompanying drawing＜2〉in, the end portion 19 that the upper end of dam body checkdam cloth and anchor line link is used steel plate reinforcement, makes Connecting jont; As figure＜6〉shown in, Connecting jont 19 is that the dam cloth end portion of checkdam cloth upper end is folding, be wrapped in the middle of the two-layer dam cloth of folding up strengthening steel plate, and, be useful on the clasp or the hole of tiing rope on the Connecting jont with gluing together or method such as heat seal is tightly linked dam cloth and steel plate to make; Connecting jont set up the stressed more evenly science of the tractive that can make dam cloth; Dam cloth Connecting jont is divided into many sections, and each sections is about 2-5 rice, ties an anchor cable on each sections, can make setting up of anchor cable and crab-bolt spaced apart like this.
The dam bag on the anchorage style reference rubber dam of dam body checkdam cloth lower end and sole plate and the anchor Design of base plate.
The back-plane design on fixed buoyancy dam can be with reference to the back-plane design of general hydraulic structure, but the base plate on reference rubber dam especially.But because fixed buoyancy dam does not need to arrange that towards draining (gas) pipeline and dam body only needs the single line anchoring, therefore, its back-plane design is simple than the back-plane design of rubber dam.
As figure＜7〉shown in, the crab-bolt 3 on fixed buoyancy dam is one or more anchor line 4 on each crab-bolt with certain upstream that is arranged in the dam evenly and at intervals, every anchor line bolt be a sections 19 of dam body checkdam cloth Connecting jont; The crab-bolt on fixed buoyancy dam can be the sheetpilling on the basis in conjunction with the upstream cut-off wall, for example figure＜9〉in 36; Also can be as figure＜2 as shown in reinforced concrete structure 3, the general hydraulic structure of its design reference.
Fixed buoyancy dam can merogenesis, joint with save between and the two ends on dam set up hard shoulder; On the contact surface of dam body and hard shoulder, the termination of dam body checkdam cloth is fixed on the hard shoulder, method reference rubber dam with isolate in the anchor Design of pier.
Fixed buoyancy dam and common dam body relatively have simple in structure, easy construction, advantage such as cheap, can in the dam construction of river, river, lake, reservoir, play a role, the semipermanent construction cofferdam that also can be used for large hydraulic engineering, and because it has the characteristics of the autonomous lifting with the fluctuation of water level, this makes it at coastal region, can be used for constructing tide blocking dam, has been widely used in the construction of reclaiming land from the sea, protect object of construction production such as beach shore protection, tidal power generation.
The design on fixed buoyancy dam is to get from the hammer body part design evolution of generation with fixed base plate that will float wall, if we with this differentiation again backspace go, the base plate that replaces fixed buoyancy dam with the hammer body part of floating wall again, we will obtain the floating wall of row again, but be that row combine the buoyancy dam and movably float the novel floating wall of wall two aspect advantages, I am referred to as " portable buoyancy dam ".
Portable buoyancy dam both can resemble dash the fixed buoyancy dam, can resemble floating wall again that works arbitrarily to move and the quick-assembling combination, as figure＜8〉shown in, its basic structure comprises: dam body 1, basic dam cloth 30, anchoring pile 31 and anchor line 32.33.
In order to adapt to the mobility on portable buoyancy dam, and piece together the needs that roped party is closed fast, the improvement of following several respects has been done on more fixed buoyancy dam, portable buoyancy dam on dam structure: 1, dam body checkdam cloth 5 is formed by taking form assembly knots such as knot anchoring by the small size dam of polylith cloth; Be provided with Connecting jont at the two ends, the left and right sides of each small size dam cloth, this Connecting jont is to overlap by the dam cloth at two ends, the checkdam cloth left and right sides is folding for this reason, and interior pad steel sheet forms; Because dam body can present the arcuation distortion behind the buoyancy dam dash, so the lining steel plate of dam cloth Connecting jont is broken into several sections, and each section is all curved.2, dam body floatage body 6 adopts more easily with the connection of dam cloth 5 that rope is a method; So-called rope be method be exactly with the rope that passes dam cloth with floatage body tightly tie combined method on dam cloth.Adopt this method to require to pass Ba Buchu dam cloth is carried out reinforcement, and on the ladle body of floatage body, have sling or the slotted eye of wearing the tether rope at rope.
The basis, bottom on portable buoyancy dam should be the hammer body part of floating wall, and this comprises the hammer body that is cascaded and carries on the back the checkdam cloth of attached hair shape aquiclude; But in practical application construction for rapid and convenient, hammer body can replace with weights such as sandbags fully, therefore in the structure on portable buoyancy dam, the checkdam cloth of the attached hair of the back of the body that its underpart foundation 30 can just prolong out from dam body lower end shape aquiclude, I am called this part checkdam cloth " basic dam cloth ", distinguish mutually with dam body checkdam cloth with this.Basis dam cloth 30 and dam body checkdam cloth 5 combine as a whole, at its back side both with the certain limit built-in hairiness shape aquiclude 35 of the contact surface on basic ground, also the same with the upper end of dam body checkdam cloth 5 Connecting jont 34 that makes of end of dam, basis cloth 30 is anchored on the upstream anchoring pile 31 with the Connecting jont 34 of anchor line 33 with basic dam cloth in the practical application construction.
Portable buoyancy dam also can be divided into many sections as fixed buoyancy dam, and two terminations between sections and the sections and dam are provided with hard shoulder, plays shutoff and fixing dam body.
Sealing between portable buoyancy dam and the hard shoulder connects adopts the water pressure self-closing formula to connect; So-called water pressure self-closing formula connects: the checkdam cloth of the end portion on portable buoyancy dam is inwardly folded, make the balaclava shape, as figure＜12〉shown in, the outside of balaclava dash cloth 41 both with certain zone of the contact surface of dividing pier 42 in, hairiness shape aquiclude from top to bottom distributes; And, be distributed with row's float from top to bottom at the place, inside edge of balaclava dam cloth; After portable buoyancy dam assembles, the dam body end portion suitably started raise, and balaclava dam cloth made in order, when dam body floats with the rise of upstream water level, balaclava dam cloth 41 also can float simultaneously, the balaclava dam cloth that floats can tightly be posted on the dividing pier 42 owing to the effect of hydraulic pressure, adds the obstruct of the hair shape aquiclude at the cloth back side, balaclava dam, and water just can be blocked.
The relatively more floating wall in portable buoyancy dam has better stress condition, therefore utilizes portable buoyancy dam to replace floating wall to construct the flood control cofferdam and emergent dash small dike has better effect.
Description of drawings:
Figure＜1 〉: floating wall is constructed flood control (construction) cofferdam schematic diagram.
Figure＜2 〉: fixed buoyancy dam organigram
Among the figure: 1, dam body 2, sole plate 3, crab-bolt 4, anchor line 5, checkdam cloth 6, floatage body 18, dam body top floatage body 19, dam cloth upper end Connecting jont
Figure＜3 〉: floatage body form and structural representation
Figure＜4 〉: fixed buoyancy dam floatage body and the anchoring of checkdam cloth connect schematic diagram
Among the figure: 20, plastic casing 21, light material 22, reinforcement stirrup 23, connection backing plate 24, reinforcement dam cloth 25, connection pressing plate 26, bolt
Figure＜5 〉: the side schematic view of dam body top floatage body
Figure＜6 〉: checkdam cloth Connecting jont structural representation
Figure＜7 〉: fixed buoyancy dam (fragment) floor map
Among the figure: 27, sideline, base plate upstream 28, sideline, base plate downstream 29, dam body and base plate anchor line
Figure＜8 〉: portable buoyancy dam dash schematic diagram
Among the figure: 1, dam body 30, basic dam cloth 31, crab-bolt 32.33, anchor line 5, dam body checkdam cloth 6, floatage body 19, dam body dam cloth Connecting jont 34, basic dam cloth Connecting jont 35, hair shape aquiclude
Figure＜9 〉: fixed buoyancy dam is constructed tide blocking dam and is subdued dam crest stormy waves overflow schematic diagram
Among the figure: 1, dam body 2: the decompression of sole plate 36, dam body crab-bolt and upstream cut-off wall 37, downstream reverse osmosis pond and collecting gutter 38, wave-breaking body 39, unrestrained floating mat 40, floating mat crab-bolt disappear
Figure＜10 〉: the emergent dash small dike schematic diagram of embankment is constructed on portable buoyancy dam
Figure＜11 〉: the power that disappears floating mat keg float sectional drawing
Among the figure: 43, water inlet 44, steam vent
Figure＜12 〉: the water pressure self-closing formula sealing of portable buoyancy dam and dividing pier connects schematic diagram
Among the figure: 41, abutment balaclava dash cloth 42, hard shoulder
The specific embodiment:
1, utilize portable buoyancy dam to construct the flood control cofferdam fast.
Shown in utilizing portable buoyancy dam to construct the method in flood control cofferdam, cofferdam (construction) and utilize the construction method of floating wall similar: as scheming＜8, construct at needs on the basic section in cofferdam checkdam cloth (comprising basic dam cloth 30 and dam body checkdam cloth 5) is launched, wherein basic dam cloth 30 in face of water (flow) direction forward, dam body checkdam cloth 5 along water (flow) direction backward, and piece together knot by the width of cloth and get up, floatage body 6 is tied one by one on the checkdam cloth 5 of dam body, constitute whole dam body part 1, simultaneously with sandbag with cloth part 30 compactings of basic dam; Then that dam body 1 is upstream folding, make it in face of head direction bedding on the basic dam of compacting cloth 30.On the basis of upstream, buoyancy dam, lay row's anchoring pile 31, respectively the dam cloth Connecting jont 19 on dam body 1 top and Connecting jont 34 bolts of basic dam cloth 30 ends are tied up on the anchoring pile 31 with rope 32,33, the rope 32 that the dam body Connecting jont is tied in guarantee has enough length, so that dam body can fully float.When flood arrives, the dam body 1 of bedding on the basis can slowly float along with the rise of water level before the current direction, final because the weight effect of weight such as hydraulic pressure and sandbag on the traction action of anchor line, the basic dam cloth before the buoyancy dam, and the acting in conjunction of the buoyancy of dam body self, portable buoyancy dam can float formation one stifled cofferdam, blocks flood.
2, utilize portable buoyancy dam to construct the emergent dash small dike of embankment fast:
Construction method is as figure＜10〉shown in: embankment side certain distance near water left, lay row's anchoring pile along dike, on the dike face after the stake, with the checkdam cloth expansion on portable buoyancy dam, wherein basic dam cloth part forward, dam body checkdam cloth part is backward and piece together knot by the width of cloth and get up; Floatage body is tied one by one on dam body checkdam cloth, constitute whole dam body part, simultaneously with weights such as sandbags with the cloth part compacting of basic dam, after this that dam body part is folding in dike, make it in face of the head bedding on the basic dam of compacting cloth, and respectively the terminal bolt of dam body top and basic dam cloth is tied up on the anchoring pile with hawser, guarantee that bolt is that the anchor line of dam body has enough length, guarantees that dam body can fully float dash; Water level exceeds levee crown in dike, is subjected to the floating holder of water, and dam body can float dash with the height that rises of water level, prevents the purpose of overflowing thereby realize increasing levee crown.
3, utilize fixed buoyancy dam to construct tide blocking dam:
Shown in figure (9), at first, the foundation structure of on the basis of choosing, beach, constructing the dam.This comprises: upstream, dam cut-off wall and crab-bolt 36, impervious blanket, dam base plate 2, decompression reverse osmosis structure and collecting gutter 37 and hard shoulder etc. behind the dam.Here, the cut-off wall and the crab-bolt of tide blocking dam can be combined as a whole; Then dam body is pursued the joint installation in position, this comprises the anchoring of dam body lower end and base plate, and the dam body upper end is fixed by the connection of anchor line and crab-bolt, and the connection anchoring of dam body end portion and hard shoulder.Mounted dam body is felt like old friends at the first meeting on base surface forward.
Since tide blocking dam will be often in the face of marine strong wind wave action and violent tidal fluctuations, so tide blocking dam must can be good at solving the dam crest overflow phenomena that stormy waves causes, and can comprehensively take following three kinds of measures for this reason:
1. the unrestrained floating mat that disappears is set before tide blocking dam, and this requires to construct row's floating mat crab-bolt 40 again before the dam body crab-bolt, and the unrestrained floating mat front end that disappears ties up on the floating mat crab-bolt 40 by crab-bolt, and the rear end anchor ties up on the dam body crab-bolt.
2. at wave resistance body 38 of tide blocking dam dam body top anchor knot.
3. in the foundation structure, increase collecting gutter 37 and drainage pumping plant behind the dam of tide blocking dam, the water that dam crest is overflowed flows back to marine once more.
Claims (7)
1. fixed flexible buoyancy dam body, but merogenesis between the dam body is provided with hard shoulder between sections and the sections, plays shutoff and fixation, and its basic structure comprises; Dam body, sole plate, anchoring pile and anchor line four parts, wherein dam body is the dash carrier, sole plate and anchor are fastened to the dam body dash provides stable anchoring, it is characterized in that; The dam body on this dam be the floatage body that distributes by many broadwises regularly arranged be anchored on the checkdam cloth and constitute, the dam body lower end is anchored on the sole plate, the upper end ties up to before the dam on the anchoring pile by the anchor line bolt, and dam body is realized autonomous lifting by the floatage energy of self with the fluctuation of water level; The dam body floatage body is to do shell by the high-density plastic, in fill the light enclosed staving that lightweight foam material is made, dam body checkdam cloth is made by the impermeable material that has than high-tensile, cloth lower end, dam closely is anchored on the sole plate, the upper end ties up on the crab-bolt before the dam by the anchor line bolt, has realized the anchoring of whole dam body thus; For ease of linking to each other with anchor line, dam body checkdam cloth upper end end portion makes Connecting jont with steel plate reinforcement, and dam cloth Connecting jont is divided into the sections of many disconnections, and bolt is one group of anchor line on each sections; The bolt clip plate anchoring is adopted in connection between floatage body and the checkdam cloth, on one's body the floatage body body, be evenly distributed with several along the staving direction and strengthen stirrup, the connection backing plate that a band screw is arranged along the staving direction at the floatage body back, connect between backing plate and several stirrup fixed, at checkdam cloth and the floatage body place that links, checkdam cloth is carried out reinforcement and perforation, then in the checkdam cloth outside, with bolt and one and the corresponding connection pressing plate of floatage body connection backing plate, floatage body tightly is anchored on the checkdam cloth.
2. flexible buoyancy dam body of movable type, this dam body can close and quick formation by the assembly roped party, but merogenesis between the dam body, be provided with hard shoulder between sections and the sections, play shutoff and fixation, its basic structure comprises: dam body, dam, basis cloth, anchoring pile and anchor line four parts, it is characterized in that: the dam body on this dam be the floatage body that distributes by many broadwises regularly arranged be fixed on the checkdam cloth and constitute, client link is the basic dam cloth of fixing with weight weight and anchor line tractive under the dam body, the upper end ties up to before the dam on the anchoring pile by the anchor line bolt, and dam body is realized autonomous lifting by the floatage energy of self with the fluctuation of water level; The dam body floatage body is to do shell by the high-density plastic, in fill the light enclosed staving that lightweight foam material is made, dam body checkdam cloth is made by the impermeable material that has than high-tensile, its down basic dam cloth of of client link be the checkdam cloth that is connected as a single entity with dam body checkdam cloth that extends out from dam body checkdam cloth lower end, the certain limit built-in at the cloth back side, basic dam is implanted with a mao shape aquiclude; The terminal end portion of the upper end end portion of dam body checkdam cloth and basic dam cloth is all strengthened making Connecting jont with steel plate, so that anchor line bolt system; The checkdam cloth on whole dam is tied to unite by the assembly of many small size dams cloth and is formed, and the termination of the left and right sides of each small size checkdam cloth is provided with the Connecting jont that can be used for piecing together fast knot associating usefulness; It is method that the anchoring of dam body floatage body and dam body checkdam cloth connects the employing rope, promptly floatage body is tied tightly on checkdam cloth with the rope that passes checkdam cloth, pass checkdam cloth place with dam cloth reinforcement at rope, clasp, hole or the groove of wearing the tether rope and using arranged on one's body at the body of floatage body.
3. flexible buoyancy dam body according to claim 1 is characterized in that: the upper end of dam body checkdam cloth grows dam body top floatage body certain-length, thereby ensures dam body when floating dash, and this end can be all the time in water.
4. flexible buoyancy dam body according to claim 1 is characterized in that: the anchor line that dam body upper end bolt is tied up to before the dam must have suitable length, to ensure that dam body can float fully.
5. flexible buoyancy dam body according to claim 1, it is characterized in that: shape and other floatage bodies of dam body top floatage body are different, difference is that the back side of this floatage body is a fairshaped parabola, and two sides are waney arc surfaces up and down.
6. method of utilizing the flexible buoyancy of the described movable type of claim 2 dam to construct the emergent dash small dike of flood control cofferdam and embankment fast, it is characterized in that: construct at needs on the basic section in cofferdam, dam cloth is launched, wherein basic dam cloth part in face of the head direction preceding, dam body checkdam cloth after, and piece together roped party by the width of cloth and lump together, form view picture dam cloth; Floatage body is tied one by one on dam body checkdam cloth, is constituted whole dam body part, simultaneously with weights such as sandbags with the cloth part compacting of basic dam, then that dam body part is upstream folding, make it in face of the water (flow) direction bedding on basic dam cloth; Lay row's anchoring pile on the basis of upstream, dam, respectively the dam body Connecting jont and the basic dam cloth Connecting jont bolt of dam body upper end are tied up on this row's anchoring pile with rope, bolt is that the rope of dam body upper end Connecting jont must have sufficient length, to ensure that dam body can fully float.
7. method of subduing fixed buoyancy dam dam crest overflow under the stormy waves condition; This method comprises three contents, it is characterized in that: the unrestrained floating mat that disappears is set, with the wind wave action before the reduction dam before dam, fixed buoyancy dam 1.; The unrestrained floating mat that disappears be by a plurality of keg floats by mutual series connection and the floating row's body that floats on the surface that forms in parallel, the front end of arranging body ties up on the crab-bolt before the dam by anchor line, the rear end ties up on the dam body by hawser; The shell of floating mat keg float is made by engineering plastics or aluminium plastic material, and part is two-layer up and down in it, and lightweight foam material is being filled on the upper strata, and lower floor is a cavity, and cavity bottom has a unidirectional water inlet, and a steam vent and staving exterior are arranged at the top; 2. at dam body top, fixed buoyancy dam the wave resistance body is set; The wave resistance body is the sub-dam body of anchor knot on buoyancy dam key dam body top, its structure and buoyancy dam key dam body structure are basic identical, also floatage body by anchoring on the dash cloth constitutes, only its specification is less than the key dam body, the lower end of wave resistance body is anchored at dam body top, buoyancy dam, the upper end ties up to before the dam on the crab-bolt by the anchor line anchor, forms a kind of form of structure of double-deck dam; 3. collecting gutter and drainage pumping plant are set behind the dam, will overflow the water come again before the pumped back dam from dam crest.
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| CNB02135426XA CN100389238C (en) | 2002-08-15 | 2002-08-15 | Flexible dam with aid of buoyancy and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB02135426XA CN100389238C (en) | 2002-08-15 | 2002-08-15 | Flexible dam with aid of buoyancy and its construction method |
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| CN1408958A CN1408958A (en) | 2003-04-09 |
| CN100389238C true CN100389238C (en) | 2008-05-21 |
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Cited By (1)
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| CN108221841A (en) * | 2017-12-29 | 2018-06-29 | 华北水利水电大学 | A kind of cellular dam slope safeguard structure |
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| CN100338313C (en) * | 2005-11-11 | 2007-09-19 | 杨继新 | Fresh water pool in sea |
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| CN108330931A (en) * | 2018-04-18 | 2018-07-27 | 中交（天津）生态环保设计研究院有限公司 | A kind of fishbone type flexible ecological guiding device |
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|---|---|
| CN1408958A (en) | 2003-04-09 |
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