Concrete prefabricated block and assembling interlock type protection-apron
Technical field
The utility model belongs to hydraulic engineering field, and in particular to a kind of concrete prefabricated block, the utility model also relate to
And a kind of assembling interlock type protection-apron for being mainly used for fine soil plain area stream bed or field ditch foot guard.
Background technology
Washed away for a long time in flow, artificial dredging the effects that under, stream bed, soil property field ditch continue incision, are worn under serious threat
The normal operation of the engineerings such as shallow embedding pipeline, optical cable.To avoid the underground installations such as pipeline, optical cable buried depth deficiency or local exposure, palpus
Lay stream bed, field ditch bottom protection against erosion, incision engineering.
At present, stream bed, field ditch foot guard engineering in general are using underground anti-scour wall, flow surface, mortar laid stone lining, jackstone
Protection-apron, gabion etc., using very extensive in terms of the line projects such as railway, highway, oil-gas pipeline administer the damaged or destroyed by flood of stream road.
It facts have proved:Underground anti-scour wall is applied widely, and protection effect is good, and stronger stream road Flood disaster is acted on for punching
Regulation effect is especially pronounced, but project cost is higher, and Construction on Environment is affected, especially fine earth Plain Bao Shui areas, base
It is larger to cheat excavation, Yield rainfall relation, based process difficulty.Flow surface, mortar laid stone lining are suitable for basicly stable stream bed, field ditch
Foot guard, although project cost is relatively low, construction is simple, easy-maintaining, resistance to deformation, frost heaving resistant poor performance, it is fragile, it is whole
Protection effect is poor.Jackstone protection-apron is suitable for relatively stable stream bed, field ditch, resistance to deformation, frost heaving resistant performance and energy dissipating effect
Fruit is good, and project cost is relatively low, but may increase difficulty of construction because block stone grain diameter is larger, and part is fragile.Gabion is applicable in
In washing away the stream bed relatively strong, basis is weak, field ditch foot guard, resistance to deformation, frost heaving resistant performance and effect of energy dissipation are good, and
Construction is simple, but project cost is higher, and part is fragile, and runtime maintenance cost is higher.
Fine soil plain area landform is gentle, and damaged or destroyed by flood development in stream road is faint, but groundwater level depth is shallower, stream bed, field ditch
Bottom rock-soil body mostly in saturation state, easily liquefy by vibration.Stream bed, the dredging of field ditch part and its slow incision may
Lead to the underground shallow burieds engineering such as pipeline, optical cable buried depth deficiency, even exposure.For above-mentioned rough sledding, using underground anti-scour wall,
Its foundation trench excavates, Yield rainfall relation difficulty is larger, and abundant underground water seriously affects construction quality;Using flow surface, mortar laid stone lining,
Because of stream bed, field ditch base foundation is weak, ground body water content is high, leads to constructional difficulties and fragile;Using jackstone protection-apron with
Gabion, volume is larger, blocks stream road and field ditch, reduces discharge section area, influences flood passage and overcurrent.Therefore, it is necessary to
A kind of simple and practical stream bed of utility model design or field ditch foot guard engineering and construction method.
Invention content
First technical problem to be solved in the utility model is to provide a kind of concrete prefabricated block;The utility model institute
The second technical problem to be solved is to provide a kind of assembling interlock type protection-apron.The core of the utility model is to reduce engineering excavation
On the basis of disturbance, can submersible, concrete prefabricated block installation, connection are carried out using hand fit's machinery, form interlock type
Protection-apron;The utility model is simple in structure, construction is convenient, protection effect is good, project cost is cheap.
The technical solution that the utility model is taken by above-mentioned first technical problem of solution is as follows:A kind of concrete precast block
Body;It is characterized in that:It is Rectangular Concrete prefabricated block, and block is interior along stiffener is surrounded by, and stiffener is equipped with more
The bar connecting hole of a protrusion block upper surface.
Further, bar connecting hole is uniformly distributed in concrete prefabricated block upper surface surrounding, generally lays at 4~8;
Bar connecting hole is parallel to concrete prefabricated block edge, and the two spacing B is generally 5~10cm.
Further, concrete prefabricated block is formed by once-pouring of concrete, and in square, length of side A is generally 30
~100cm, thickness H are generally 5~10cm.
Further, stiffener is completed by a reinforcement fabrication, is closed around forming one with bar connecting hole in one
The entirety of conjunction.
The technical solution that the utility model is taken by above-mentioned second technical problem of solution is as follows:A kind of assembling interlock type shield
It is smooth;It is characterized in that:By be laid on stream bed or field ditch bottom and large number of concrete prefabricated block upper and lower, left and right
It is mutually permanently connected and forms.
Further, connection reinforcing bar passes through the bar connecting hole of adjacent two block concretes prefabricated block, mixed by adjacent two pieces
Solidifying soil prefabricated block is fixedly connected.
Compared with prior art, the beneficial effects of the utility model are:It is surrounded by concrete precast block body along block
Stiffener, not only increases the intensity of block, and constitutes continuous bar connecting hole;Concrete prefabricated block can shift to an earlier date
It is prefabricated, the convenient, short time limit of combination installation interlock type protection-apron construction;Interlock type protection-apron is assembled by large number of concrete precast block
Composite assembly is interconnected to constitute, and flexible characteristic is notable on the whole, has stronger antiscour, resistance to deformation, frost heaving resistant thaw collapse
Can, the whole succinct, low engineering cost of protection-apron, protection effect are good, to stream road flood discharge capacity, surface disturbance, vegetation deterioration etc.
The influence of natural geological environment is slight, adapts to the various rivers, raceway groove, field ditch foot guard of fine soil plain area distribution, especially often
Year property flowing water or underground water exposure area's shallow embedding engineering protection.
Description of the drawings
Fig. 1 is the structure diagram of concrete prefabricated block;
Fig. 2 is the planar structure schematic diagram for assembling interlock type protection-apron;
Fig. 3 is I-I sectional view of Fig. 2;
Fig. 4 is II-II sectional view of Fig. 2.
In figure:1-concrete prefabricated block, 2-bar connecting hole, 3-stiffener, 4-connection reinforcing bar, 5-shallow embedding
Linear engineering, 6-stream bed or field ditch original bottom, the A-concrete prefabricated block length of side, H-concrete precast block body thickness,
The spacing in B-bar connecting hole and concrete prefabricated block edge, D-bar connecting hole interior diameter, d-stiffener diameter,
L-stiffener to concrete prefabricated block upper surface spacing.
Specific embodiment
Embodiment 1;As shown in Fig. 1, Fig. 3 and Fig. 4:A kind of concrete prefabricated block provided by the utility model;It is square
The concrete prefabricated block 1 of shape, Rectangular Concrete prefabricated block 1 is interior along stiffener 3 is surrounded by, and stiffener 3 is equipped with multiple
Protrude the bar connecting hole 2 of block upper surface.
Concrete prefabricated block 1 makes, after the stiffener 3 equipped with bar connecting hole 2 is set in mold, by concrete
Primary concreting is formed.
Further, the uniformly distributed surrounding in concrete prefabricated 1 upper surface of block in bar connecting hole 2, generally sets
At four~eight, the present embodiment is at eight;Bar connecting hole 2 is parallel to concrete prefabricated block edge, bar connecting hole and coagulation
The spacing B at native prefabricated block edge is generally 5~10cm.
Further, concrete prefabricated block 1 is fabricated to square, in this way, being laid with the protection-apron construction of assembling interlock type
It is more handy in the process;The length of side A of concrete prefabricated block 1 is generally 30~100cm, and thickness H is generally 5~10cm;
To ensure that bar connecting hole 2 is solid and reliable, the spacing L of stiffener 3 to concrete prefabricated 1 upper surface of block is pre- equal to concrete
The half of 1 thickness H of clamp dog body.
Further, stiffener 3 is completed by a reinforcement fabrication with bar connecting hole 2 in one, surround and form one
The entirety of a closure.2 semicircular in shape of bar connecting hole, 2 3~5cm of interior diameter D value ranges of bar connecting hole;Stiffener is straight
0.6~1.0cm of value range of diameter d.
Embodiment 2;As shown in Fig. 2, Fig. 3 and Fig. 4:A kind of assembling interlock type protection-apron;By being laid on stream bed or field ditch bottom
Portion and large number of 1 upper and lower, left and right of concrete prefabricated block be mutually permanently connected and form(Fig. 2 show left and right phase
Two block concrete prefabricated blocks 1 being mutually fixedly connected).Connecting reinforcing bar 4 passes through the reinforcing bar of adjacent two block concretes prefabricated block 1 to connect
Hole 2 is connect, adjacent two block concretes prefabricated block 1 is fixedly connected.The upper surface of concrete prefabricated block 1 and stream bed or field ditch
Former bottom 6 is substantially concordant.
Assemble the construction method of interlock type protection-apron substantially:It excavates first, flatten the stream bed for needing to protect or field ditch original
Bottom 6, cutting depth is concrete precast block body thickness H, and longitudinal river slope is kept to be basically unchanged;Then stream bed is arised from from upstream
Or concrete precast block 1 is laid in field ditch bottom 6, bar connecting hole 2 is located at top surface, and adjacent block seam is tight, top flushes;Ginseng
See Fig. 2, finally connected adjacent reinforcing bar connecting hole 2 one by one using connection reinforcing bar 4, form assembling interlock type protection-apron.Concrete is pre-
The upper surface of clamp dog body 1 and stream bed or field ditch original bottom 6 are substantially concordant.Ensure the shallow embedding linear engineering 5 positioned at protection-apron lower part
It is effectively protected.