CN103233446A - Composite panel earth and rockfill dam and anti-seepage body construction method - Google Patents
Composite panel earth and rockfill dam and anti-seepage body construction method Download PDFInfo
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Abstract
The invention discloses a composite panel earth rockfill dam and an anti-seepage body construction method. The composite panel earth rockfill dam comprises a capsule blanket, a panel seat, a composite panel, a wave-resistant wall, a transitional layer, an earth dam body and the like, wherein the cross section of the composite panel earth dam is ladder-shaped; the wave-resistant wall is arranged at the dam top; the capsule blanket is tiled on the upstream river bed; the panel seat from the river bed to dam abutments on two sides is arranged at the upstream toe; a drape is arranged below the panel seat; the composite panel is arranged on the whole upstream dam slope surface; the bottom surface of the composite panel is connected with the panel seat; the top surface of the composite panel is connected with the wave-resistant wall; the inclined transitional layer with thin upper part and thick lower part is arranged between the composite panel and the earth dam body; a stone revetment and a packway are arranged on the downstream dam slope surface; and a slope-clinging drainage body is arranged at the downstream toe; and the capsule blanket, the resin film seal, the panel seat, the drape, the composite panel, the dam abutment on both sides and the wave-resistant wall form the closed anti-seepage body. The composite panel earth rockfill dam is suitable for being built on rock, gravel, earth and other different dam foundations, has the characteristics of high water storage level, good anti-seepage effect, simple structure, simplicity and convenience in construction and the like, and is a novel water-retaining building in the reservoir pivot.
Description
Technical field
The present invention relates to a kind of composite material face that adopts is earth and rockfill dam and the job practices thereof of antiseepage and slop protection material, specifically a kind of composite material face earth and rockfill dam and antiseepage body construction method thereof.
Background technology
At present, the panel of panel earth and rockfill dam often adopts reinforced concrete structure, because the rigidity of steel concrete panel is big, and the earth and rockfill dam body of support steel reinforced concrete panel is loose media, in case the sedimentation of earth and rockfill dam body is difficult to compatible deformation between steel concrete panel and the earth and rockfill dam body, tend to produce steel concrete panel plat-bottom escape, under the effect of loads such as retaining pressure, deadweight, stormy waves, cause steel concrete panel cracking, influenced the safety and normal operation of dam.
Summary of the invention
Deficiency at existing panel earth and rockfill dam panel, the present invention proposes a kind of composite material face earth and rockfill dam and antiseepage body construction method thereof, it adopts, and cracking resistance, wind and wave resistance are impacted, fatigue proof plastic composites is made panel, can with earth and rockfill dam body compatible deformation, having improved the stress condition of panel, is a kind of panel earth and rockfill dam that adopts desirable antiseepage and slop protection material.
Technical solution problem of the present invention adopts following technical scheme:
A kind of composite material face earth and rockfill dam, comprised folder film bedding, panel seat, composite material face, wave wall, transition zone, the earth and rockfill dam body, the cross section of described earth and rockfill dam body is trapezoidal shape, dam crest has wave wall, the folder film bedding that tiling is arranged on the riverbed, upstream, there is a panel seat from the dam foundation to the both sides dam abutment at toe place, upstream, panel seat has curtain, on the whole upstream dam slope face and in the dam abutment caulking groove composite material face is arranged, upper-thin-lower-thick and tilting transition zone are arranged between composite material face and the earth and rockfill dam body, pitched work is arranged and packway is set on the dam slope face of downstream, there is the drain on embankment slope body at toe place, downstream, be provided with settlement joint between described folder film bedding and the panel seat, the resin molding sealing is arranged in the settlement joint, this resin molding sealing is the collapsed shape that Open Side Down, two lateral surfaces of resin molding sealing are close to the settlement joint slotted wall, the bottom surface of described composite material face is connected with panel seat, the end face of composite material face is connected with wave wall, resin antiseepage film a in the described folder film bedding, resin antiseepage film b in the panel seat, the resin molding sealing, chevron resin antiseepage film in the composite material face links into an integrated entity, by described folder film bedding, the resin molding sealing, panel seat, curtain, composite material face, the two sides dam abutment, wave wall constitutes the antiseepage body of sealing.
The upstream extremity of described folder film bedding is provided with key-wall, both sides are stretched in the riverbank embedding ditch, downstream is provided with described settlement joint, folder film bedding is divided into four layers, clay liner is from bottom to top arranged successively, bituminous concrete lower floor, resin antiseepage film a, the bituminous concrete upper strata, described clay liner is equal thickness, and be inclined in the foundation ditch in riverbed to bottom, the high downstream of upstream extremity, described bituminous concrete lower floor end face is horizontal plane, its upstream extremity thickness is thinner than the downstream, and the thickness between upstream extremity and the downstream is by linear change, and described resin antiseepage film a is equal thickness, and described bituminous concrete upper strata is equal thickness.
Described panel seat is the strip asphalt concrete structure, its cross section is polygon rib shape, panel seat and described folder film bedding joint face have 45 ° inclined-plane, panel seat and described composite material face connection inclined are orthogonal to the upstream dam slope face, the resin antiseepage film b of one deck level is arranged in the middle of the panel seat, and described resin antiseepage film b is equal thickness.
Described composite material face is divided into six layers, glass fiber grid lower floor is from bottom to top arranged successively, surface layer under the bituminous concrete, chevron resin antiseepage film, surface layer in the bituminous concrete, the glass fiber grid upper strata, the bituminous concrete upper layer, surface layer under the described bituminous concrete, the thickness of surface layer is upper-thin-lower-thick in the bituminous concrete, and the thickness of top to bottom is by linear change, described bituminous concrete upper layer is equal thickness, the chevron that projection is all arranged on the described chevron resin antiseepage film two sides, chevron on this resin antiseepage film both sides face is by equidistant, front and back are corresponding to be arranged, and chevron is dehisced down.
A kind of job practices of composite material face earth and rockfill dam panel, carry out according to the following steps successively:
(1) dam site survey setting-out, remove the foreign material of riverbed and dam abutment, after the excavation of flood land, upstream, the dam foundation, dam abutment and the processing, at the upstream extremity excavation key-wall hole of folder film bedding groove, at place, folder riverbank, film bedding both sides excavation embedding ditch, at the dam foundation at upstream toe place and the foundation ditch of both sides dam abutment excavation panel seat;
(2) spray mulseal on the bottom surface of panel seat foundation ditch and the sidewall after, layering paves in the foundation ditch of panel seat, the rolled asphalt concrete is to the height of resin molding sealing, bituminous concrete surface at making sprays pitch glue, expand resin antiseepage film b immediately, again after the resin antiseepage film b that expands sprays pitch glue, pave, the rolled asphalt concrete is to the end face of panel seat, and after smooth the modification of the seam face of settlement joint, spray one deck heated bitumen at settlement joint seam face, and handle is removed with the scum silica frost that composite material face connects on batch inclined-plane clean;
(3) roll the dam foundation after, carry out the transition zone of dam body, concordant the filling of layering of earth and rockfill dam body, until filling dam crest.In the process of filling, to spraying the mulseal front cover on the transition zone lateral surface;
(4) on the flood land of panel seat upstream side, fill the clay liner of folder film bedding, after spraying mulseal on the clay liner, pave, rolled asphalt concrete lower floor, after this bituminous concrete lower floor end face sprays pitch glue, expand resin molding antiseepage film a immediately, and at settlement joint place arrangement resin molding sealing, resin molding antiseepage film a is connected with the resin molding sealing, and the resin molding sealing is connected with the adipose membrane antiseepage film b of panel seat, after resin molding antiseepage film a end face sprays pitch glue, pave, rolled asphalt concrete upper strata, finish the construction of folder film bedding part;
(5) treat the dam body settlement stability after, the follower seat end face carries out curtain grouting to dam foundation internal drilling;
(6) construction of beginning composite material face, sequence of construction is that follower seat sprays heated bitumen to the transition aspect of dam crest successively, expands glass fiber grid lower floor immediately; After heated bitumen sprays in glass fiber grid lower floor, pave, surface layer under the rolled asphalt concrete; Surface layer sprays pitch glue under bituminous concrete, expands chevron resin antiseepage film immediately; Spray pitch glue in chevron resin antiseepage film, pave, surface layer in the rolled asphalt concrete; After surface layer sprays heated bitumen in bituminous concrete, expand the glass fiber grid upper strata immediately; After heated bitumen is sprayed on the glass fiber grid upper strata, pave, rolled asphalt concrete upper layer;
(7) on the whole upstream dam slope face behind the making composite material face, build wave wall at dam crest.Like this, constitute the antiseepage body by folder film bedding, resin molding sealing, panel seat, curtain, composite material face, both sides dam abutment, wave wall, namely finished the construction of whole composite material face dam antiseepage body.
The antiseepage body of the composite material face earth and rockfill dam among the present invention is based on following operating principle: the composite material face earth and rockfill dam is provided with folder film bedding in the riverbed, upstream of the dam foundation, on the whole upstream dam slope face of dam body and extend in the dam abutment caulking groove and be provided with composite material face, junction at folder film bedding and composite material face is provided with panel seat, to press from both sides the film bedding, sealing, panel seat, resin antiseepage film in the composite material face is linked to be integral body, by folder film bedding, the two sides dam abutment, panel seat, composite material face, wave wall constitutes the antiseepage body of sealing, resist the osmotic pressure that the water levels of upstream and downstream difference produces, and the composite material face bank protection effect that can also play that anti-stormy waves washes away etc.
Analysis from the composite material face loading angle, because composite material face need bear huge water pressure, the drag force of water level fast lifting, loads such as the impact force of stormy waves, and because producing differential settlement, the earth and rockfill dam body makes the composite material face distortion, come to nothing, maximum tensile stress all can appear on two sides of composite material face, in order to allow the composite material face of earth and rockfill dam have the intensity height, plasticity, cracking resistance, endurance, can with the characteristic of earth and rockfill dam body compatible deformation etc., now adopted with the density height, the dense-graded asphalt concrete that water stability is good is main body, the chevron resin antiseepage film that its therebetween ductility is good, two sides are established the material of checking of glass fiber grid and are made panel, to reach desirable cracking resistance, shock resistance, anti-seepage effect.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The present invention proposes the job practices of a kind of composite material face earth and rockfill dam and antiseepage body thereof, it has adopted can antiseepage, cracking resistance, wind and wave resistance are impacted, freeze proof, with the composite material face of earth and rockfill dam body compatible deformation, endurance, UV resistant radiation be antiseepage and the slop protection material of earth and rockfill dam, the characteristics that have that reserve-water-level height, antiseepage and effect of prestressed are good, simple structure, easy construction, cost are low etc. are water retaining structures new in the reservoir hinge.
Description of drawings
Fig. 1 is composite material face earth and rockfill dam forward sight structural representation of the present invention.
Fig. 2 is composite material face earth and rockfill dam plan structure schematic diagram of the present invention.
Fig. 3 is composite material face earth and rockfill dam backsight structural representation of the present invention.
Fig. 4 is composite material face earth and rockfill dam side sectional structure schematic diagram of the present invention.
Fig. 5 is folder film bedding side sectional structure schematic diagram of the present invention.
Fig. 6 is panel seat side sectional structure schematic diagram of the present invention.
Fig. 7 is that composite material face of the present invention is at wave wall place side sectional structure schematic diagram.
Fig. 8 is the front or rear TV structure schematic diagram of chevron resin antiseepage film of the present invention.
Fig. 9 is chevron resin antiseepage film side-looking structural representation of the present invention.
Number in the figure: 1 dam foundation, 2 dam abutments, 3 dam crests, 4 wave walls, 5 curtains, 6 settlement joint, 7 resin molding sealings, 8 transition zones, 9 earth and rockfill dam bodies, 10 pitched works, 11 packways, 12 drain on embankment slope bodies, riverbed, 13 upstream, 14 upper pond levels, 15 levels of tail water, 16 isohypses, 17 folder film beddings, 18 clay liners, 19 bituminous concrete lower floors, 20 resin antiseepage film a, 21 bituminous concrete upper stratas, 22 key-walls, 23 panel seats, 24 resin antiseepage film b, 25 composite material faces, 26 glass fiber grid lower floors, surface layer under 27 bituminous concretes, 28 chevron resin antiseepage film, 29 chevrons, surface layer in 30 bituminous concretes, 31 glass fiber grid upper stratas, 32 bituminous concrete upper layers.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of composite material face earth and rockfill dam in the present embodiment, comprised folder film bedding 17, panel seat 23, composite material face 25, wave wall 4, transition zone 8, earth and rockfill dam body 9, the cross section of earth and rockfill dam body 9 is trapezoidal shape, dam crest 3 has wave wall 4, the folder film bedding 17 that tiling is arranged on the riverbed, upstream 13, there is a panel seat 23 from the dam foundation to both sides dam abutment 2 at toe place, upstream, panel seat 23 has curtain 5, on the whole upstream dam slope face and in dam abutment 2 caulking grooves composite material face 25 is arranged, upper-thin-lower-thick and tilting transition zone 8 are arranged between composite material face 25 and the earth and rockfill dam body 9, pitched work 10 is arranged on the dam slope face of downstream and packway 11 is set, there is drain on embankment slope body 12 at toe place in downstream.Be provided with settlement joint 6 between described folder film bedding 17 and the panel seat 23, resin molding sealing 7 is arranged in the settlement joint 6, this sealing 7 is the collapsed shape that Open Side Down, two lateral surfaces of resin molding sealing 7 are close to settlement joint 6 slotted walls, the bottom surface of described composite material face 25 is connected with panel seat 23, the end face of composite material face 25 is connected with wave wall 4, resin antiseepage film a20 in the described folder film bedding 17, resin antiseepage film b24 in the panel seat 23, resin molding sealing 7, chevron resin antiseepage film 28 in the composite material face 25 links into an integrated entity, by described folder film bedding 17, resin molding sealing 7, panel seat 23, curtain 5, composite material face 25, two sides dam abutment 2, wave wall 4 constitutes the antiseepage body of sealing.
Referring to Fig. 5, the upstream extremity of the folder film bedding 17 described in the present embodiment is provided with key-wall 22, and both sides are stretched in the riverbank embedding ditch, and downstream is provided with described settlement joint 6.Folder film bedding 17 is divided into four layers, and clay liner 18, bituminous concrete lower floor 19, resin antiseepage film a20, bituminous concrete upper strata 21 are from bottom to top arranged successively.Described clay liner 18 is equal thickness, and be inclined in the foundation ditch in riverbed to bottom, the high downstream of upstream extremity, described bituminous concrete lower floor 19 end faces are horizontal plane, its upstream extremity thickness is thinner than the downstream, and the thickness between upstream extremity and the downstream is by linear change, described resin antiseepage film a20 is equal thickness, and described bituminous concrete upper strata 21 is equal thickness.
Referring to Fig. 6, panel seat 23 described in the present embodiment is the strip asphalt concrete structure, its cross section is polygon rib shape, panel seat 23 has 45 ° inclined-plane with described folder film bedding 17 joint faces, panel seat 23 is orthogonal to the upstream dam slope face with described composite material face 25 connection inclined, the resin antiseepage film b24 of one deck level is arranged in the middle of the panel seat 23, and described resin antiseepage film b24 is equal thickness.
Referring to Fig. 7, Fig. 8 and Fig. 9, composite material face 25 described in the present embodiment is divided into six layers, and surface layer 30, glass fiber grid upper strata 31, bituminous concrete upper layer 32 in surface layer 27 under glass fiber grid lower floor 26, the bituminous concrete, chevron resin antiseepage film 28, the bituminous concrete are from bottom to top arranged successively.Under the described bituminous concrete in surface layer 26, the bituminous concrete thickness of surface layer 30 be upper-thin-lower-thick, and the thickness of top to bottom is by linear change, described bituminous concrete upper layer 32 is equal thickness, the chevron 29 that projection is all arranged on described chevron resin antiseepage film 28 two sides, chevron 29 on these chevron resin antiseepage film 28 both sides faces is by equidistant, the corresponding layout in front and back, and chevron 29 is dehisced down.
The job practices of composite material face earth and rockfill dam antiseepage body, carry out according to the following steps successively:
(1) dam site survey setting-out, remove the foreign material of riverbed and dam abutment, after the excavation of flood land, upstream 13, the dam foundation 1, dam abutment 2 and the processing, upstream extremity excavation key-wall 22 hole grooves at folder film bedding 17, at place, folder riverbank, film bedding 17 both sides excavation embedding ditch, at the dam foundation 1 at upstream toe place and the foundation ditch of both sides dam abutment 2 excavation panel seats 23;
(2) spray mulseal on the bottom surface of panel seat 23 foundation ditches and the sidewall after, layering paves in the foundation ditch of panel seat 23, the rolled asphalt concrete is to the height of resin molding sealing 7, bituminous concrete surface at making sprays pitch glue, expand resin antiseepage film b24 immediately, again after the resin antiseepage film b24 that expands sprays pitch glue, pave, the rolled asphalt concrete is to the end face of panel seat 23, and after smooth the modification of the seam face of settlement joint 6, spray one deck heated bitumen at settlement joint 6 seam faces, and handle is removed with the scum silica frost that composite material face 25 connects on batch inclined-plane clean;
(3) roll the dam foundation 1 after, carry out the transition zone 8 of dam body, concordant the filling of layering of earth and rockfill dam body 9, until filling dam crest 3.In the process of filling, to spraying the mulseal front cover on transition zone 8 lateral surfaces;
(4) on the flood land of panel seat 23 upstream sides, fill the clay liner 18 of folder film bedding 17, spray mulseal on the clay liner 18 after, pave, rolled asphalt concrete lower floor 19.After these bituminous concrete lower floor 19 end faces spray pitch glue, expand resin molding antiseepage film a20 immediately, and at settlement joint 6 places arrangement resin molding sealing 7, resin molding antiseepage film a20 is connected with resin molding sealing 7, and resin molding sealing 7 is connected with the adipose membrane antiseepage film b24 of panel seat 23, after resin molding antiseepage film a20 end face sprays pitch glue, pave, rolled asphalt concrete upper strata 21, finish the construction of folder film bedding 17 parts;
(5) treat the dam body settlement stability after, follower seat 23 end faces carry out curtain grouting 5 to the dam foundation 1 internal drilling;
(6) construction of beginning composite material face 25, sequence of construction is that follower seat 23 to 8 of the transition zones of dam crest 3 are gone up the sprinkling heated bitumen successively, expands glass fiber grid lower floor 26 immediately; After heated bitumens spray in glass fiber grid lower floor 26, pave, surface layer 27 under the rolled asphalt concrete; Surface layer 27 sprays pitch glue under bituminous concrete, expands chevron resin antiseepage film 28 immediately; Spray the pitch glue in chevron resin antiseepage film 28, pave, surface layer 30 in the rolled asphalt concrete; After surface layer 30 sprays heated bitumen in bituminous concrete, expand glass fiber grid upper strata 31 immediately; After heated bitumens are sprayed on glass fiber grid upper strata 31, pave, rolled asphalt concrete upper layer 32;
(7) on the whole upstream dam slope face behind the making composite material face 25, build wave wall 4 at dam crest 3.Like this, constitute the antiseepage body by folder film bedding 17, resin molding sealing 7, panel seat 23, curtain 5, composite material face 25, both sides dam abutment 2, wave wall 4, namely finished the construction of whole composite material face dam antiseepage body.
The dam foundation 1 is the ground on dam; Dam abutment 2 is massifs of dam body both sides; The effect of dam crest 3 is to satisfy safety, structure and traffic requirement; The effect of wave wall 4 is to prevent that wave from overflowing the dam; The effect of curtain 5 is the dam foundation 1 antiseepages; The effect of settlement joint 6 is to stay the seam of establishing when producing differential settlement between composite material face earth and rockfill dam and the folder film bedding 17; The effect of resin molding sealing 7 is to prevent from leaking or seeping water in the settlement joint 6; The effect of transition zone 8 is to support composite material face 25, coordinates the distortion of composite material face 25 and earth and rockfill dam body 9; The effect of earth and rockfill dam body 9 is the structures that form the energy dash, supports composite material face 25; The effect of pitched work 10 is protection dam slope faces, prevents rain drop erosion and freezing erosion etc.; The effect of packway 11 is to improve dam slope face stability against sliding, alleviates washing away of rainwater harvesting; The effect of drain on embankment slope body 12 is to prevent seepage failures such as piping, stream soil; Riverbed, upstream 13 is riverbeds of composite material face earth and rockfill dam upstream; Upper pond level 14 is height of upstream inpoundment; The level of tail water 15 is elevations of the downstream water surface; Isohypse 16 is the lines that equate elevation on the ground; The effect of folder film bedding 17 is to increase seepage paths length; The effect of clay liner 18 is to make folder film bedding 17 stressed even; The effect of bituminous concrete lower floor 19 is antiseepage, supporting resin antiseepage film a20; The effect of resin antiseepage film a20 is antiseepage; The effect on bituminous concrete upper strata 21 is antiseepages, protection resin antiseepage film a20; The effect of key-wall 22 is to increase seepage paths length; The effect of panel seat 23 is supporting composite material faces 25, and settlement joint 6 and curtain 5 are set, and holds the upstream toe; The effect of resin antiseepage film b24 is antiseepage; The effect of composite material face 25 is antiseepages, and wind and wave resistance is impacted; The effect of glass fiber grid lower floor 26 is anticrackings; The effect of surface layer 27 is antiseepages under the bituminous concrete, supporting chevron resin antiseepage film 28; The effect of chevron resin antiseepage film 28 is antiseepages; The effect of chevron 29 is the frictional resistances that increase chevron resin antiseepage film 28 and bituminous concrete; The effect of surface layer 30 is antiseepages in the bituminous concrete; The effect on glass fiber grid upper strata 31 is anticrackings; The effect of bituminous concrete upper layer 32 is toppings.
Claims (5)
1. composite material face earth and rockfill dam, comprised folder film bedding, panel seat, composite material face, wave wall, transition zone, the earth and rockfill dam body, it is characterized in that: the cross section of described earth and rockfill dam body is trapezoidal shape, dam crest has wave wall, the folder film bedding that tiling is arranged on the riverbed, upstream, there is a panel seat from the dam foundation to the both sides dam abutment at toe place, upstream, panel seat has curtain, on the whole upstream dam slope face and in the dam abutment caulking groove composite material face is arranged, upper-thin-lower-thick and tilting transition zone are arranged between composite material face and the earth and rockfill dam body, pitched work is arranged and packway is set on the dam slope face of downstream, there is the drain on embankment slope body at toe place, downstream, be provided with settlement joint between described folder film bedding and the panel seat, the resin molding sealing is arranged in the settlement joint, this resin molding sealing is the collapsed shape that Open Side Down, two lateral surfaces of resin molding sealing are close to the settlement joint slotted wall, the bottom surface of described composite material face is connected with panel seat, the end face of composite material face is connected with wave wall, resin antiseepage film a in the described folder film bedding, resin antiseepage film b in the panel seat, the resin molding sealing, chevron resin antiseepage film in the composite material face links into an integrated entity, by described folder film bedding, the resin molding sealing, panel seat, curtain, composite material face, the two sides dam abutment, wave wall constitutes the antiseepage body of sealing.
2. composite material face earth and rockfill dam according to claim 1, it is characterized in that: the upstream extremity of described folder film bedding is provided with key-wall, both sides are stretched in the riverbank embedding ditch, downstream is provided with described settlement joint, folder film bedding is divided into four layers, clay liner is from bottom to top arranged successively, bituminous concrete lower floor, resin antiseepage film a, the bituminous concrete upper strata, described clay liner is equal thickness, and be inclined in the foundation ditch in riverbed to bottom, the high downstream of upstream extremity, described bituminous concrete lower floor end face is horizontal plane, its upstream extremity thickness is thinner than the downstream, and the thickness between upstream extremity and the downstream is by linear change, described resin antiseepage film a is equal thickness, and described bituminous concrete upper strata is equal thickness.
3. composite material face earth and rockfill dam according to claim 1, it is characterized in that: described panel seat is the strip asphalt concrete structure, its cross section is polygon rib shape, panel seat and described folder film bedding joint face have 45 ° inclined-plane, panel seat and described composite material face connection inclined are orthogonal to the upstream dam slope face, the resin antiseepage film b of one deck level is arranged in the middle of the panel seat, and described resin antiseepage film b is equal thickness.
4. composite material face earth and rockfill dam according to claim 1, it is characterized in that: described composite material face is divided into six layers, glass fiber grid lower floor is from bottom to top arranged successively, surface layer under the bituminous concrete, chevron resin antiseepage film, surface layer in the bituminous concrete, the glass fiber grid upper strata, the bituminous concrete upper layer, surface layer under the described bituminous concrete, the thickness of surface layer is upper-thin-lower-thick in the bituminous concrete, and the thickness of top to bottom is by linear change, described bituminous concrete upper layer is equal thickness, the chevron that projection is all arranged on the described chevron resin antiseepage film two sides, chevron on this resin antiseepage film both sides face is by equidistant, front and back are corresponding to be arranged, and chevron is dehisced down.
5. the job practices of a composite material face earth and rockfill dam panel is carried out successively according to the following steps, it is characterized in that:
(1) dam site survey setting-out, remove the foreign material of riverbed and dam abutment, after the excavation of flood land, upstream, the dam foundation, dam abutment and the processing, at the upstream extremity excavation key-wall hole of folder film bedding groove, at place, folder riverbank, film bedding both sides excavation embedding ditch, at the dam foundation at upstream toe place and the foundation ditch of both sides dam abutment excavation panel seat;
(2) spray mulseal on the bottom surface of panel seat foundation ditch and the sidewall after, layering paves in the foundation ditch of panel seat, the rolled asphalt concrete is to the height of resin molding sealing, bituminous concrete surface at making sprays pitch glue, expand resin antiseepage film b immediately, again after the resin antiseepage film b that expands sprays pitch glue, pave, the rolled asphalt concrete is to the end face of panel seat, and after smooth the modification of the seam face of settlement joint, spray one deck heated bitumen at settlement joint seam face, and handle is removed with the scum silica frost that composite material face connects on batch inclined-plane clean;
(3) roll the dam foundation after, carry out the transition zone of dam body, concordant the filling of layering of earth and rockfill dam body, until filling dam crest;
In the process of filling, to spraying the mulseal front cover on the transition zone lateral surface;
(4) on the flood land of panel seat upstream side, fill the clay liner of folder film bedding, after spraying mulseal on the clay liner, pave, rolled asphalt concrete lower floor, after this bituminous concrete lower floor end face sprays pitch glue, expand resin molding antiseepage film a immediately, and at settlement joint place arrangement resin molding sealing, resin molding antiseepage film a is connected with the resin molding sealing, and the resin molding sealing is connected with the adipose membrane antiseepage film b of panel seat, after resin molding antiseepage film a end face sprays pitch glue, pave, rolled asphalt concrete upper strata, finish the construction of folder film bedding part;
(5) treat the dam body settlement stability after, the follower seat end face carries out curtain grouting to dam foundation internal drilling;
(6) construction of beginning composite material face, sequence of construction is that follower seat sprays heated bitumen to the transition aspect of dam crest successively, expands glass fiber grid lower floor immediately; After heated bitumen sprays in glass fiber grid lower floor, pave, surface layer under the rolled asphalt concrete; Surface layer sprays pitch glue under bituminous concrete, expands chevron resin antiseepage film immediately; Spray pitch glue in chevron resin antiseepage film, pave, surface layer in the rolled asphalt concrete; After surface layer sprays heated bitumen in bituminous concrete, expand the glass fiber grid upper strata immediately; After heated bitumen is sprayed on the glass fiber grid upper strata, pave, rolled asphalt concrete upper layer;
(7) on the whole upstream dam slope face behind the making composite material face, build wave wall at dam crest;
Like this, constitute the antiseepage body by folder film bedding, resin molding sealing, panel seat, curtain, composite material face, both sides dam abutment, wave wall, namely finished the construction of whole composite material face dam antiseepage body.
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| CN201310115594.6A CN103233446B (en) | 2013-04-03 | 2013-04-03 | Composite material face earth and rockfill dam and impervious body construction method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696397A (en) * | 2013-12-27 | 2014-04-02 | 北京轩昂环保科技股份有限公司 | Anti-seepage treatment method for artificial dam |
| CN103938584A (en) * | 2014-04-22 | 2014-07-23 | 黄河勘测规划设计有限公司 | Construction method for connecting covering layer upper concrete-faced rockfill dam toe board, connection board and diaphragm wall |
| CN104863096A (en) * | 2015-05-27 | 2015-08-26 | 中国电建集团华东勘测设计研究院有限公司 | Overlay construction method for repairing aged asphalt concrete seepage-prevention face plate |
| CN105040642A (en) * | 2015-06-05 | 2015-11-11 | 苗元亮 | Anti-seepage and water-stop structure on water conservancy project |
| CN105178259A (en) * | 2015-08-24 | 2015-12-23 | 中国科学院力学研究所 | Joint designing method of cushion course and transition layer of concrete faced rockfill dam |
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| CN113322904A (en) * | 2021-06-04 | 2021-08-31 | 中国电建集团成都勘测设计研究院有限公司 | High-spraying impervious wall for covering layer foundation concrete dam and construction method thereof |
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| CN103938584A (en) * | 2014-04-22 | 2014-07-23 | 黄河勘测规划设计有限公司 | Construction method for connecting covering layer upper concrete-faced rockfill dam toe board, connection board and diaphragm wall |
| CN103938584B (en) * | 2014-04-22 | 2015-10-28 | 黄河勘测规划设计有限公司 | The connection construction method of covering layer top panel toe plate, junction plate, impervious wall |
| CN104863096B (en) * | 2015-05-27 | 2017-01-04 | 中国电建集团华东勘测设计研究院有限公司 | A kind of overlay construction method of the aging repairing of asphalt concrete anti-seepage panel |
| CN104863096A (en) * | 2015-05-27 | 2015-08-26 | 中国电建集团华东勘测设计研究院有限公司 | Overlay construction method for repairing aged asphalt concrete seepage-prevention face plate |
| CN105040642A (en) * | 2015-06-05 | 2015-11-11 | 苗元亮 | Anti-seepage and water-stop structure on water conservancy project |
| CN105178259A (en) * | 2015-08-24 | 2015-12-23 | 中国科学院力学研究所 | Joint designing method of cushion course and transition layer of concrete faced rockfill dam |
| CN105484204A (en) * | 2015-12-31 | 2016-04-13 | 长江勘测规划设计研究有限责任公司 | Stone masonry dam or concrete dam sealing anti-seepage reinforcement structure and construction method thereof |
| CN110158546A (en) * | 2019-04-09 | 2019-08-23 | 中国水利水电科学研究院 | For earth and rockfill dam, the emergency safeguard structure and safeguard procedures of native bank of stone downstream slope |
| CN110158546B (en) * | 2019-04-09 | 2020-07-28 | 中国水利水电科学研究院 | Emergency protection structure and protection method for earth and rockfill dam and earth and rockfill dam backwater slope |
| CN112942258A (en) * | 2021-02-03 | 2021-06-11 | 宁夏晨禹水利水电建筑工程有限责任公司 | Danger-removing, reinforcing and seepage-proofing method for barrier lake rock dam |
| CN113322904A (en) * | 2021-06-04 | 2021-08-31 | 中国电建集团成都勘测设计研究院有限公司 | High-spraying impervious wall for covering layer foundation concrete dam and construction method thereof |
| CN114753310A (en) * | 2022-04-21 | 2022-07-15 | 马向永 | A prevention of seepage stagnant water structure for hydraulic and hydroelectric engineering |
| CN114753310B (en) * | 2022-04-21 | 2024-03-08 | 马向永 | A prevention of seepage stagnant water structure for hydraulic and hydroelectric engineering |
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