CN108343081A - Foundation pit side-wall drainage arrangement and construction method - Google Patents
Foundation pit side-wall drainage arrangement and construction method Download PDFInfo
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- CN108343081A CN108343081A CN201710047700.XA CN201710047700A CN108343081A CN 108343081 A CN108343081 A CN 108343081A CN 201710047700 A CN201710047700 A CN 201710047700A CN 108343081 A CN108343081 A CN 108343081A
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 64
- 239000002689 soil Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 238000009412 basement excavation Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 241000272814 Anser sp. Species 0.000 claims 1
- 102000002322 Egg Proteins Human genes 0.000 claims 1
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- 239000004575 stone Substances 0.000 claims 1
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- 238000001764 infiltration Methods 0.000 description 6
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- 229920002472 Starch Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 2
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- 235000019698 starch Nutrition 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
Abstract
A kind of foundation pit side-wall drainage arrangement and construction method are disclosed in the present invention, it is dredged applied to backwater after the concrete face wall of foundation pit, it include the catch basin after being set to concrete face wall close to concrete face wall, and the catch basin is stretched into one end, the other end extends the aqueduct outside concrete face wall, gravel material is filled in the catch basin, it forms catch basin by being excavated after the concrete face wall of foundation pit side-wall, and it is filled and is supported with seepy material, so that the backwater in the soil body after concrete face wall enters catch basin, and it is discharged by the aqueduct in catch basin, effectively to export the backwater after concrete face wall.
Description
Technical field
The present invention relates to foundation pit construction field, more particularly to a kind of foundation pit side-wall drainage arrangement and construction method.
Background technology
In foundation pit construction, it is often necessary to hydrophobic water guide is carried out to foundation pit side-wall and bottom wall, by the soil body in foundation pit
In backwater drainage.Existing Normal practice is to do hydrophobic water guiding system, i.e.,：Aqueduct is inserted in the slope surface of side slope, by slope
Backwater behind face dredges out, and drainage groove is done in bottom of foundation ditch, to collect the backwater of bottom of foundation ditch, and will be derived from aqueduct
Water introduces drainage groove and uniformly drains.
In general, the way of aqueduct is analogous to the soakaway trench on ground, i.e., beaten on the tube body of PVC PE materials
Hole, and in the tube body outer cladding strainer for being provided with open-work, then this part tube body is inserted into the subsequent soil body of slope surface, after slope surface
The backwater of the soil body enters aqueduct by open-work, carries out white-out, strainer is then to bring silt into open-work when preventing water from entering tube body
On blocked.
But in practical applications, the water inlet area of aqueduct is only the superposition of open-work area, and 33 even due to the weight of water
Force effect, some open-works are flowed into without water at all, and therefore, rarely water is discharged aqueduct, and the backwater after the slope surface of foundation pit is still
It is oozed out by slope surface large area, influences the stability of concrete face wall sprayed in slope surface.
Invention content
The purpose of the present invention is to provide backwater drainages after a kind of slope surface on foundation pit side-wall to be drained with foundation pit side-wall
Device.
The present invention above-mentioned purpose technical scheme is that：A kind of foundation pit side-wall drainage arrangement, is answered
It is dredged for backwater after the concrete face wall of foundation pit, includes the catch basin after being set to concrete face wall close to concrete face wall,
And the catch basin is stretched into one end, the other end extends the aqueduct outside concrete face wall, and gravel is filled in the catch basin
Material.
By using above-mentioned technical proposal, the position collected as backwater using catch basin, the water in the soil body is oozed out outward
When, initially enter catch basin, after the water in catch basin saves bit by bit a certain amount of, aqueduct discharges it, prevent backwater can not from dredge
Export comes and is oozed out from concrete face wall.Seepage material is filled in the side wall and roof that support catch basin is played in catch basin
Effect catch basin is flooded when preventing backwater from penetrating into.
Preferably, the catch basin includes four side walls, roof and bottom wall, four sidewalls vertical settings, the bottom wall edge
Horizontal direction includes at least two sections of slopes, and the inclined direction of adjacent slopes is low-lying to be formed on bottom wall on the contrary, shown water guide
Pipe is inserted into shown low-lying place.
By using above-mentioned technical proposal, two, four or more slopes is arranged according to the length of catch basin in bottom wall,
When adjacent slopes reversed dip, can be formed in intersection it is low-lying, backwater enter catch basin after, hitherward converged along slope, then
It is inserted into aqueduct at this convergence to be drained, can preferably realize that backwater is collected, and reduce the quantity of aqueduct.
Preferably, the roof is arranged obliquely from the soil body in concrete face wall to foundation pit.
By using above-mentioned technical proposal, roof is arranged for inclined-plane, and the area that water penetrates into catch basin increases, also, catchments
When the pressure of the soil body above slot acts on the inclined-plane of catch basin, the pressure of the soil body is decomposed by horizontal component, reduces longitudinal pressure,
Catch basin is prevented to be collapsed.
Preferably, the aqueduct is consolidated to concrete face wall.
By using above-mentioned technical proposal, drainpipe, which is fixed to concrete face wall, can prevent aqueduct play, influence to lead
Water pipe stretches into the depth of catch basin.
Preferably, the pvc pipe inserted with axis horizontal setting in the catch basin leans on the axis direction of the pvc pipe
It is provided with opening on the side wall of nearly concrete face wall, several water seepage holes is offered on the tube wall on pvc pipe on the opening, it is described
Gravel material is filled in pvc pipe, and shown aqueduct stretches into pvc pipe.
By using above-mentioned technical proposal, for the foundation pit of the soft bottom such as sandy soil, backfill, the soil after concrete face wall
Constitution it is softer, when water is flowed to catch basin, soften due to the discharge of water in the soil body and deform, catch basin is using one
Even not yet it is in time for water guide after the section time just to collapse and be submerged, " support of the water seepage hole as catch basin is opened using pvc pipe
Skeleton ", backwater enter across water seepage hole in pvc pipe, and the soil body is converged by pipe walls support, water in pvc pipe, pvc pipe opening
Place is for placing aqueduct.
Preferably, the gravel material is any one or a few combination in rubble, cobblestone, woven bag.
By using above-mentioned technical proposal, rubble, cobblestone etc. are the granular material of bulk, can not only play infiltration and make
With the side wall soil body of catch basin can also be supported to prevent the soil body from collapsing while catchmenting；When soil body itself is more closely knit,
Using woven bag simple and easy to get as filler, its intensive water hole can be utilized, realizes better earth-retaining in catch basin
Effect.
Another goal of the invention of the present invention is to provide a kind of construction method for processing above-mentioned foundation pit side-wall drainage arrangement,
To process above-mentioned foundation pit side-wall drainage arrangement in foundation pit side-wall, starches the backwater in foundation pit side-wall in the soil body and put together progress
Dredge discharge.
The above-mentioned purpose of the present invention is achieved by the following technical solution：A kind of construction party of foundation pit side-wall drainage arrangement
Method includes at least following steps：
Step 1 is excavated with Luoyang Spade on foundation pit side-wall in the horizontal direction, forms sidewalls vertical and bottom wall has along excavation side
To the catch basin for including at least two sections slopes；
Soft degree of the step 2 according to the soil body after foundation pit side-wall, the gravel material of appropriate material is filled into catch basin；
Step 3 is inserted into aqueduct to the low-lying place to catchment in groove bottom wall.
It, can be in advance in foundation pit before the concrete topping construction on foundation pit side-wall by using above-mentioned technical proposal
Catch basin is excavated on side wall, and fills gravel material into it, and catch basin roof and side wall after excavation are supported by gravel material, ensure collecting
Catch basin keeps its cavity shape during water, before the backwater exudation concrete face wall in foundation pit side-wall, necessarily flows into and catchments
Then slot is put aside at the low-lying place that two sections of slopes of the trench bottom that catchments connect, is finally exported by the aqueduct being inserted into.
Another object of the present invention is to provide it is a kind of process above-mentioned foundation pit side-wall drainage arrangement construction method, with
Soft or sandy soil stratum foundation pit side-wall processes above-mentioned foundation pit side-wall drainage arrangement, starches stagnant in the soil body in foundation pit side-wall
Water, which is put together, to carry out dredging discharge.
The above-mentioned purpose of the present invention is achieved by the following technical solution：
A kind of construction method of foundation pit side-wall drainage arrangement includes at least following steps：
Step 1 is excavated with Luoyang Spade on foundation pit side-wall in the horizontal direction, forms catch basin；
Step 2 takes pvc pipe, blocked to catch basin length adaptation, and cut-out tube wall in the axial direction, formation are opened
Mouthful；
Several water seepage holes are beaten on the tube wall of overthe openings when step 3 opening is towards concrete face wall；
Pvc pipe is inserted into catch basin by step 4, and is open certainly into pvc pipe and is filled gravel material；
Step 5 is inserted into an appropriate number of aqueduct into pvc pipe from being open, and when being inserted into more aqueducts, whole aqueducts
Along pvc pipe extending direction arranged for interval.
By using above-mentioned technical proposal, in the softer foundation pit of geology, after excavating catch basin, soil body meeting in water collecting process
It flows to catch basin to be flooded, to insertion pvc pipe inside catch basin as support after excavation, and opens up infiltration on pvc pipe
Hole is as collecting channel, and the lower half portion not trepanning of pvc pipe, so that water can be put aside in pipe.It is open on pvc pipe to insert
Enter aqueduct.The addition of gravel material can further increase support effect of the pvc pipe for the trough wall surface that catchments.
In conclusion the invention has the advantages that：The position collected as backwater using catch basin, in the soil body
When water oozes out outward, catch basin is initially entered, after the water in catch basin saves bit by bit a certain amount of, aqueduct discharges it, and prevents stagnant
Water can not be oozed out from dredging out from concrete face wall.Seepage material is filled in the side that support catch basin is played in catch basin
The effect of wall and roof floods catch basin when preventing backwater from penetrating into；For the foundation pit of the soft bottom such as sandy soil, backfill, mix
Soil body quality after solidifying soil face wall is softer, when water is flowed to catch basin, softens due to the discharge of water in the soil body and deforms,
Catch basin is in time for water guide in use for some time or even not yet and just collapses and be submerged, and opens water seepage hole with pvc pipe and makees
For " support frame " of catch basin, backwater enters across water seepage hole in pvc pipe, and by pipe walls support, water carries out the soil body in pvc pipe
Convergence, pvc pipe opening is for placing aqueduct.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of embodiment 2；
Fig. 3 is the foundation pit slope structure view before gunite concrete；
Fig. 4 is the structural schematic diagram of embodiment 3；
Fig. 5 is the structural schematic diagram of the pvc pipe used in embodiment 3.
In figure, 1, bottom of foundation ditch；2, concrete face wall；3, aqueduct；4, catch basin；40, roof；41, side wall；42, bottom
Wall；5, gravel material；6, reinforced mesh；7, pvc pipe；70, it is open；71, water seepage hole.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1
A kind of foundation pit side-wall drainage arrangement is set in foundation pit mixed at 1 certain altitude of bottom of foundation ditch as shown in fig. 1
After solidifying soil face wall 2, installation position depends on the backwater extended position of prediction.It includes a catch basin 4, and is inserted into and catchments
Aqueduct in slot 4,2 after concrete face wall after the soil body in the water that is detained penetrate into savings in catch basin 4, then put aside to certain
It is exported by aqueduct 3 after depth.
Catch basin 4 includes four side walls 41, bottom wall 42 and roof 40, wherein：Roof 40 is then from concrete face wall 2 to mixed
Soil body direction after solidifying soil face wall 2 is arranged obliquely, so that roof 40 is in the inclined-plane approximately perpendicular to concrete face wall 2.Four
A side wall 41 is arranged along vertical direction, also, the upper end of the side wall 41 close to concrete face wall 2 extends on concrete face wall 2,
Since the concrete topping 2 on foundation pit side-wall is inclined wall, the side wall 41 close to concrete topping 2 is extending vertically into
It is engaged with concrete topping 2, the bottom of catch basin 4 can be made to form the ponding space with certain depth.
As shown in Figure 3, in order to make flow be converged to a certain position of the slot bottom of catch basin 4, to be led by one to several
Water pipe 3 exports, and bottom wall 42 arranges that adjacent slopes are oblique opposite along the horizontal extension direction of concrete topping 2 in the slope of multistage
With low-lying in intersection's formation one, the backwater penetrated into catch basin 4 flows to the low-lying of adjacent slopes intersection formation along slope
It is interior, it is flowed out except catch basin 4 in the aqueduct 3 by stretching into the position.When the cross-directional length of catch basin 4 is longer, slope
Multistage can be set, be then used cooperatively more aqueducts 3 and export the water of collection.
Slope intersection in catch basin 4 is stretched into one end of aqueduct 3, the other end extends from concrete face wall 2 and to base
The direction for cheating bottom 1 extends, or the sump being arranged at access bottom of foundation ditch 1, or access gutter is discharged.In Fig. 3
Shown, aqueduct 3 is pierced by the position of concrete face wall 2, is tied up with the reinforced mesh for forming concrete face wall 2 with band or steel wire
It pricks 6 to fix, then the concrete being injected on concrete face wall 2 is fixed.
Gravel material 5 is filled in catch basin 4, can according to the soil property of concrete topping 2, coarse sand, rubble, cobblestone with
And one or central combination are selected between woven bag, it is excellent when the soil body after concrete topping 2 is more soft when selection
First cobblestone or rubble is selected to be filled, to support catch basin 4, prevents the soil body in hydrophobic process from catchmenting with backwater entrance
Slot 4 buries catch basin 4；When the soil body is more closely knit, the woven bag group that construction site can be selected discarded fills at bulk to collection
In sink 4, when filling, should be noted that the nozzle that prevent the gravel material 5 of filling from blocking aqueduct 3.
Embodiment 2
A kind of foundation pit side-wall drainage arrangement, as shown in Fig. 2 to 3, with embodiment 1 difference lies in：In the present solution, catch basin
4 setting be after the construction of concrete topping 2 is completed, therefore, after the installation position of catch basin 4 is based on foundation pit molding, coagulation
The position in the infiltration region on native face layer 2, when construction, dig concrete topping 2, are then opened into the soil body with Luoyang Spade etc.
Digging is formed catch basin 4 and is fixed aqueduct 3 using the gravel material 5 of filling, and by it according in embodiment 1 after catch basin 4 is filled
The mode of description is bound onto reinforced mesh 6.
Embodiment 3
A kind of foundation pit side-wall drainage arrangement, as shown in Figure 4, with embodiment 1 difference lies in：After concrete topping 2
After excavating catch basin 4 on the soil body, it is built into the pvc pipe 7 that an extending direction along concrete topping 2 extends to catch basin 4, and
Using the inside of pvc pipe 7 as catchment area.
In conjunction with shown in Fig. 5, pvc pipe 7 is commercially available pvc pipe along tube axis direction cut-out tube wall gained, the pipe of excision
Opening 70 is formed at wall, when in pvc pipe merging catch basin 4, opening 70 is arranged towards concrete topping 2.In the upper of pvc pipe 7
Several water seepage holes 71 are provided on half part tube wall, so that the water in the soil body after concrete topping 2 can pass through water seepage hole 71
It is put aside into the bottom of pvc pipe 7, not trepanning on 70 tube walls below that are open so that water can be put aside here, and passes through
The aqueduct 3 being inserted into pvc pipe 7 is discharged.
Herein it should be understood that：In order to make water converge at one as possible as in 1, then led by less aqueduct 3
Go out and dredge backwater to realize, a notch can be done close to centre on the length direction of pvc pipe 7, then slightly by pvc pipe 7
An angle is bent, the tube body of notch both sides forms two slopes, and water is converged into the tube wall of incision, is inserted into water guide here
Pipe 3.It is of course also possible to which multiple pvc pipes 7 are arranged, notch is done on each pvc pipe 7, forms the position of multiple water convergences, so
Aqueduct 3 is inserted on each position afterwards.
Structure is suitable for the foundation pit side-wall of sandy soil stratum and some pore-formings more difficult soft geology in the present embodiment
On, under these topographies, catch basin catchment after excavation beginning before can cave in, it is difficult to keep, with pvc pipe 7 as branch
Support structure can prevent the soil body from moving down and bury catch basin 4 while keeping catch basin 4.In this scheme, in order to increase
Add the compression capability of pvc pipe 7 and the water storage effect of inside, filtrate is filled inside pvc pipe 7, to support tube wall.In order to prevent
Water seepage hole 71 is blocked, and the materials such as some strainers can also be coated and fixed in 7 outer wall of pvc pipe.
Embodiment 4
A kind of construction method of foundation pit side-wall drainage arrangement set in advance：
The slope supporting of foundation pit is carried out according to the form of existing pattern foundation pit supporting structure, and final step carries out slope surface in the supporting of slope
Spray mix supporting before, increase following steps：
Step 1 is with Luoyang Spade at the position on the lower of the middle part of slope surface, or the position that empirically backwater may ooze out is opened
It digs, forms that side wall 42 shown in Fig. 1 is vertical, 40 inclined catch basin 4 of roof, and bottom wall 41 is according to the level side of catch basin 4
To length two or more slopes are set, form multiple slope intersections；
Soft degree of the step 2 according to the soil property dug out fills gravel material 5 into catch basin 4, should especially when soil property is soft
Catch basin 4 is filled as possible full；
Aqueduct 3 is inserted between the gravel material 5 of the slope intersection of the formation of bottom wall 41 by step 3, and according to needs in aqueduct
3 nozzle outer cladding does not coat water strainer；
Step 4 is according to structure shown in Fig. 3, the reinforced mesh 6 on slope surface upper berth, utilizes band either steel wire or other are band-like
Object will be in aqueduct 3 banding fixed to reinforced mesh 6；
Step 5 gunite concrete in the slope surface of foundation pit side-wall forms concrete topping 2.
Embodiment 5
A kind of construction method for the foundation pit side-wall drainage arrangement being arranged afterwards：
According to the infiltration position on concrete topping 2, construct in accordance with the following steps：
Step 1 destroys the concrete structure on the concrete topping 2 under infiltration position；
Step 2 carries out the excavation of catch basin 4 between reinforced mesh 6, and carries out filling out for gravel material 5 in the way of embodiment 4
It fills；
Step 3 is inserted into aqueduct 3 into gravel material 5, and does not coat in the nozzle outer cladding of aqueduct 3 or drainage according to needs
Net；
Step 4 is according to structure shown in Fig. 3, the reinforced mesh 6 on slope surface upper berth, utilizes band either steel wire or other are band-like
Object will be in aqueduct 3 banding fixed to reinforced mesh 6.
Embodiment 6
A kind of construction method suitable for sandy soil or the foundation pit side-wall drainage arrangement of other soft bottoms：
According to the infiltration position on concrete topping 2, construct in accordance with the following steps：
Step 1 is excavated on foundation pit side-wall, forms catch basin 4；
Step 2 takes the pvc pipe being suitably inserted into catch basin 4, and cut-out tube wall is to form opening 70 in an axial direction；
Step 3 is located on pvc pipe 7 above opening 70（Herein upper and lower refers to the opening after pvc pipe 7 is inserted into catch basin 4
70 above and below）Tube wall on beat several water seepage holes 71；
Step 4 will be inserted by the pvc pipe 7 formed in step 2 and step 3 in catch basin 4；
Step 5 inserts gravel material 5 into pvc pipe 7；
An appropriate number of aqueduct 3 is inserted into step 6 pvc pipe 7, at this time it should be noted that when not doing notch on pvc pipe 7,
It can much more appropriate arrangement aqueduct 3 in the horizontal direction；When doing notch on pvc pipe 7, aqueduct 3 need to correspond to incision shape
At ponding point arrangement；
If the excavation node of step 7 catch basin 4 is after the construction of concrete face wall 2, then at this time directly with band or steel wire
Either other ribbons are by foundation actual needs carries out or without mixed later in aqueduct 3 banding fixed to reinforced mesh 6
Coagulate the injection again of soil；If the excavation node of catch basin 4 is before the construction of concrete face wall 2, then at this time in slope surface upper berth steel
Muscle mesh sheet 6, using band either steel wire or other ribbons by aqueduct 3 banding fixed to reinforced mesh 6, then according to
Normal procedure carries out concrete ejection.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (10)
1. a kind of foundation pit side-wall drainage arrangement is dredged applied to backwater after the concrete face wall of foundation pit, it is characterized in that：Including close to
Concrete face wall（2）The catch basin being set to after concrete face wall（4）And the catch basin is stretched into one end（4）, the other end prolongs
Stretch out concrete face wall（2）Outer aqueduct（3）, the catch basin（4）It is interior to be filled with gravel material（5）.
2. foundation pit side-wall drainage arrangement according to claim 1, it is characterized in that：The catch basin（4）Including four side walls
（41）, roof（40）And bottom wall（42）, four side walls（41）It is vertically arranged, the bottom wall（42）Include at least two in the horizontal direction
Section slope, and the inclined direction of adjacent slopes is on the contrary in bottom wall（42）Low-lying, the shown aqueduct of upper formation（3）It is low shown in being inserted into
Depression.
3. foundation pit side-wall drainage arrangement according to claim 2, it is characterized in that：The roof（40）From concrete face wall
（2）The soil body in foundation pit is arranged obliquely.
4. foundation pit side-wall drainage arrangement according to claim 1, it is characterized in that：The aqueduct（3）Gu to concrete surface
Wall（2）On.
5. foundation pit side-wall drainage arrangement according to claim 1, it is characterized in that：The catch basin（4）It is interior inserted with axis
Horizontally disposed pvc pipe（7）, the pvc pipe（7）Axis direction on close to concrete face wall（2）Side wall on be provided with out
Mouthful（70）, pvc pipe（7）On in opening（70）On tube wall on offer several water seepage holes（71）, the gravel material（5）It is filled in
Pvc pipe（7）It is interior, shown aqueduct（3）Stretch into pvc pipe（7）It is interior.
6. foundation pit side-wall drainage arrangement according to claim 1 or 5, it is characterized in that：The gravel material（5）For rubble, goose ovum
Any one or a few combination in stone, woven bag.
7. a kind of construction method of foundation pit side-wall drainage arrangement as described in claim 1, characterized in that include at least as follows
Step：
Step 1 is excavated with Luoyang Spade on foundation pit side-wall in the horizontal direction, forms sidewalls vertical and bottom wall has along excavation side
To the catch basin for including at least two sections slopes；
Soft degree of the step 2 according to the soil body after foundation pit side-wall, the gravel material of appropriate material is filled into catch basin；
Step 3 is inserted into aqueduct to the low-lying place to catchment in groove bottom wall.
8. the construction method of foundation pit side-wall drainage arrangement according to claim 7, characterized in that increase after step 3 such as
Lower step：It will be on the reinforced mesh of the concrete face wall of aqueduct banding fixed to foundation pit side-wall.
9. a kind of construction method of foundation pit side-wall drainage arrangement as described in claim 5, characterized in that include at least as follows
Step：
Step 1 is excavated with Luoyang Spade on foundation pit side-wall in the horizontal direction, forms catch basin；
Step 2 takes pvc pipe, blocked to catch basin length adaptation, and cut-out tube wall in the axial direction, formation are opened
Mouthful；
Several water seepage holes are beaten on the tube wall of overthe openings when step 3 opening is towards concrete face wall；
Pvc pipe is inserted into catch basin by step 4, and is open certainly into pvc pipe and is filled gravel material；
Step 5 is inserted into an appropriate number of aqueduct into pvc pipe from being open, and when being inserted into more aqueducts, whole aqueducts
Along pvc pipe extending direction arranged for interval.
10. the construction method of foundation pit side-wall drainage arrangement according to claim 9, characterized in that place step 3 and step
Increase following steps between 4：The tube wall outer cladding water strainer of water seepage hole is offered on pvc pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710047700.XA CN108343081A (en) | 2017-01-22 | 2017-01-22 | Foundation pit side-wall drainage arrangement and construction method |
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| CN201710047700.XA CN108343081A (en) | 2017-01-22 | 2017-01-22 | Foundation pit side-wall drainage arrangement and construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630270A (en) * | 2019-10-25 | 2019-12-31 | 中建八局轨道交通建设有限公司 | Drainage system for treating stagnant water between underground excavation shaft layers and construction method thereof |
| CN111042162A (en) * | 2019-12-18 | 2020-04-21 | 沈阳市政集团有限公司 | Construction method for solving upper layer stagnant water in deep foundation pit construction by small-conduit drainage technology |
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