Summary of the invention
Technical problem to be solved by this invention overcomes existing reverse drainage system complex process, defect that cost is high, a kind of CFRD during Construction reverse osmosis water processing method and a kind of reverse osmosis drainage system are provided, this system can the reverse water of convenient effective discharge, and the structure of system is simple, arrangement convenience, and cost is low.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
CFRD during Construction reverse osmosis water processing method of the present invention, comprises the steps:
1), after rock upstream side horizontal segment transition region 10 placement grinding completes, level lays the blind material 1 of draining, at draining blind material 1 upstream side splicing sleeve 2, the upstream side of sleeve pipe 2 aligns with panel 8 surface line that will build, then the horizontal drain pipe 3 being provided with one-way water stop valve 4 is connected to the upstream side of sleeve pipe 2, one end of scupper hose 5 to be external on horizontal drain pipe 3 and to lay to collecting well 6 along bed course district 9 and toe board 12, adopting pump drainage facility to be extracted out by the water in collecting well 6;
2), when rock construction is to when building panel 8, pull down horizontal drain pipe 3, aperture is stayed at sleeve pipe 2 end panel place during construction, horizontal drain pipe 3 is connected with sleeve pipe 2 after having constructed by panel 8 again, when upstream apron fills to horizontal drain pipe 3 elevation, remove external connection row water tube hose 5, again external vertical drainage pipe 7 is connected to horizontal drain pipe 3 upstream side, external vertical drainage pipe 7 is lengthened gradually according to bedding filling ontensity, when bedding height fills to during higher than downstream free drainage elevation 1m ~ 2m, by vertical drainage pipe 7 shutoff.
In above-mentioned processing method, the upstream side of the blind material 1 of draining lays the upstream edge to rockfill area, upstream 11.The blind material 1 of draining is layed in the level of panel 8 to medium position.Vertical drainage pipe 7 adopts the method shutoff of gravity flow cement grouting.
Reverse osmosis drainage system of concrete face rockfill dam in construction period of the present invention: lay the blind material 1 of draining in the horizontal interface of transition region 10 and rockfill area, upstream 11, draining blind material 1 upstream side splicing sleeve 2, the opposite side of sleeve pipe 2 connects horizontal drain pipe 3, the opposite side of horizontal drain pipe 3 connects scupper hose 5, the other end of scupper hose 5 is placed in collecting well 6, separately establish vertical drainage pipe 7, vertical drainage pipe 7 lower end is connect 13 be connected with horizontal drain pipe 3 by curved.
Above-mentioned reverse osmosis drainage system of concrete face rockfill dam in construction period, horizontal drain pipe 3 is provided with one-way water stop valve 4.One-way water stop valve 4 permission dam Nei Shui discharge, and do not allow dam Wai Shui to pour in dam.
Aforementioned reverse osmosis drainage system, all establishes joint screw thread in the outside, two ends of horizontal drain pipe 3, dismounting when facilitating panel to construct and panel built after installation.
Aforementioned reverse osmosis drainage system, vertical drainage pipe 7 upper end is connected to lengthen vertical drainage pipe 7 by direct 14 with another section of steel pipe.
Compared with prior art, the present invention establishes the blind material of draining as dam internal drainage passage in water in dam tiling, facilitates dam construction, reduces construction interference, the reduction of erection time, reduces investment outlay; The components such as the blind material of draining, gutter, one-way water stop valve are relatively little, transport and flexibly easy for installation, counter plate weaken scope little; Adopt nipple horizontal drain pipe and sleeve pipe to be connected, when panel is built, conveniently dismounting, facilitates slding form operation; The installation of one-way water stop valve not only can run under normal circumstances, also can normally run when dam body temporary water dash in flood season, can prevent catchments outside dam, upstream pours in dam, prevents mud and rubbish blocking drainage system outside dam, can balance external water pressure in dam body voluntarily after flood; The external vertical drainage pipe adopting sectional to lengthen can meet the requirement that point elevation balances hydraulic pressure inside and outside dam body at times, prevent reverse water pressure power in dam from damaging bedding material, panel and water-stopping system, the later stage adopts gravity flow cement grouting conveniently effectively can carry out shutoff.The present invention is specially adapted to that river-bed section plinth foundation excavation is comparatively dark, upstream apron fills the reverse drainage that the duration is longer, dam body need cross the CFRD during Construction of flood dash.
Detailed description of the invention
Reverse osmosis drainage system of concrete face rockfill dam in construction period as shown in Figure 1, the blind material 1 of draining is laid in the horizontal interface of transition region 10 and rockfill area, upstream 1, draining blind material 1 upstream side splicing sleeve 2, the opposite side of sleeve pipe 2 connects the horizontal drain pipe 3 with one-way water stop valve 4, joint screw thread is all established in the outside, two ends of horizontal drain pipe 3, its opposite side connects scupper hose 5, the other end of scupper hose 5 is placed in collecting well 6, separately establish vertical drainage pipe 7, separately establish vertical drainage pipe 7, vertical drainage pipe 7 lower end is connect 13 be connected with horizontal drain pipe 3 by curved, vertical drainage pipe 7 upper end is connected to lengthen vertical drainage pipe 7 by direct 14 with another section of steel pipe.
CFRD during Construction reverse osmosis water processing method is as follows:
After rock upstream side horizontal segment transition region 10 placement grinding completes, at the blind material 1 of the circular draining of medium position horizontal laying high-strength degree of each block panel 8 of river-bed section, the upstream side of the blind material 1 of draining lays the upstream edge to rockfill area, upstream 11, steel sleeve 2 is connected at draining blind material 1 upstream side, the upstream side of steel sleeve 2 aligns with panel 8 surface line that will build, then the upstream side of steel sleeve 2 will be connected in the horizontal drain pipe 3 being provided with one-way water stop valve 4, one end of scupper hose 5 is external in and horizontal drain pipe 3 adopts steel wire to tighten and lays to collecting well 6 along bed course district 9 and toe board 12, pump drainage facility is adopted to be evacuated to outside upstream cofferdam by the water in collecting well 6, when rock construction is to when building panel 8, for ease of slding form operation, pull down the horizontal drain pipe 3 being about to build panel place temporarily, when panel is built, steel sleeve 2 end is protected, prevent blocking, and leaving aperture herein, horizontal drain pipe 3 is connected with steel sleeve 2 after having constructed by panel 8 again, and repairs this place's aperture periphery.
When flood season, dam body needed temporary water dash, pull down external connection row water tube hose 5, after draining upstream foundation ditch water after flood, then external connection row water tube hose is connected, ensure that panel, toe board and water-stopping system are in dry state, be convenient to toe board, the crack repairing of panel and sealing construction.
When upstream apron fills to horizontal drain pipe 3 elevation, first remove external connection row water tube hose 5, again external vertical drainage steel pipe 7 is connected to horizontal drain pipe 3 upstream side by the curved joint 13 of steel pipe, direct joint 14 established by external vertical drainage steel pipe 7, according to the one section one section lengthening gradually of bedding filling ontensity, be convenient to external water pressure in balance dam, when bedding height fills to during higher than downstream free drainage elevation 1m ~ 2m, vertical drainage steel pipe 7 adopted the method shutoff of gravity flow cement grouting.