CN209585078U - A kind of forced-ventilated water system for super-sized foundation pit - Google Patents
A kind of forced-ventilated water system for super-sized foundation pit Download PDFInfo
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- CN209585078U CN209585078U CN201822170191.2U CN201822170191U CN209585078U CN 209585078 U CN209585078 U CN 209585078U CN 201822170191 U CN201822170191 U CN 201822170191U CN 209585078 U CN209585078 U CN 209585078U
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Abstract
A kind of forced-ventilated water system for super-sized foundation pit of the utility model, is related to drainage of foundation pit technical field, and for solving the problem of large area, the surface water such as foundation pit underground water and rainwater cause Foundation Pit Construction in deep foundation pit earthwork digging.The forced-ventilated water system, the form of the three layers of bright row that catchments is combined using Application of light well point precipitation, that is top of the slope gutter, bottom of slope gutter and foundation pit internal drainage ditch, and respectively correspond setting sump, by setting forced-ventilated water pump and pipeline successively by water up one layer of transport, finally enter municipal sewage pipe network or river by sedimentation basin processing heel row.By the way that the bright gutter of multilayer is arranged, forced-ventilated water is carried out step by step, and reasonable drainage pattern optimizes construction site, and drainage system is more reasonable.
Description
Technical field
The utility model relates to drainage of foundation pit technical field, in particular to a kind of forced-ventilated water system for super-sized foundation pit
System.
Background technique
Foundation pit forced-ventilated water construction technology is mainly used in the deep-foundation pit engineering underground construction full stage.Base pit engineering is by underground
Water, earth excavation depth, heavy rain weather etc. influence, and landslide easily occur, generate show slurry, and foundation bearing capacity and soil property are not
Meet design requirement, very big security risk is generated to engineering construction.Usually guarantee foundation pit normal construction, pipe well is taken to drop
The measure of water, the bright row that catchments excludes underground water, the ponding in soil mass of foundation pit.
Therefore, how one kind is provided and is applied to super large ultra-deep type foundation pit forced-ventilated water system, is opened in large area, Deep Foundation Pit Excavation
In excavation construction, the problem of surface water such as foundation pit underground water and rainwater cause Foundation Pit Construction can effectively solve the problem that, be ability
The technical issues of field technique personnel's urgent need to resolve.
Utility model content
The utility model aim is that providing one kind is applied to super large ultra-deep type foundation pit forced-ventilated water system, in large area, depth
In pit earthwork excavation construction, it can effectively solve the problem that the surface water such as foundation pit underground water and rainwater are asked caused by Foundation Pit Construction
Topic, while guaranteeing earth excavation and main structure construction progress.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of forced-ventilated water system for super-sized foundation pit, the foundation pit by top of the slope road second level slope to foundation pit platform,
To bottom of foundation ditch, the forced-ventilated water system includes: subsequent earth excavation
Top of the slope gutter, the top of the slope gutter are arranged along the foundation pit top of the slope water-stop curtain, the top of the slope gutter
It is connected to place river or municipal sewage pipe network；
A top of the slope sump is arranged in the top of the slope gutter in top of the slope sump at spacing intervals；
Light well point, the light well point is between the top of the slope water-stop curtain and the top of the slope gutter；
Bottom of slope gutter, the bottom of slope gutter are set at foundation pit platform；
A bottom of slope sump, the bottom of slope collection is arranged in the bottom of slope gutter in bottom of slope sump at spacing intervals
Forced-ventilated water pump is set at well and water is evacuated in the top of the slope gutter by pipeline；
Foundation pit internal drainage ditch, the foundation pit internal drainage ditch are set to the outside of gravity dam, set at the foundation pit internal drainage ditch
Forced-ventilated water pump and pipeline is set to send water into the bottom of slope gutter.
Compared with prior art, the utility model is beneficial has the technical effect that
One, the forced-ventilated water system for super-sized foundation pit of the utility model, including top of the slope gutter and it is correspondingly arranged slope
Sump is pushed up, bottom of slope gutter is simultaneously correspondingly arranged bottom of slope sump, further includes light well point and foundation pit internal drainage ditch, and by strong
Draining pump and pipeline send the water in foundation pit internal drainage ditch into bottom of slope gutter, and the water at bottom of slope sump is evacuated to top of the slope row
In ditch, to form the bright drainage system of multilayer.By the way that the bright gutter of multilayer is arranged, forced-ventilated water is carried out step by step, it is reasonable to drain
Form optimizes construction site, and drainage system is more reasonable.The forced-ventilated water system has complicated base pit engineering good
Applicability, it can be ensured that foundation pit is not by the ponding unfavorable factors such as influenced to cause slope failure, ground impaired.When construction site by
After the influence of the unfavourable weathers such as heavy rain, typhoon, multilayer forced-ventilated aqueous systems can effective operation, and in Yu Yi restoring scene construct into
Degree, is significantly reduced ponding harm caused by construction site.
Two, the construction method of the forced-ventilated water system for super-sized foundation pit of the utility model, it is by foundation pit top of the slope road
Second level slope is to foundation pit platform, then by earth excavation to bottom of foundation ditch, using Application of light well point precipitation combine three layers catchment it is bright
The form of row, i.e. top of the slope gutter, bottom of slope gutter and foundation pit internal drainage ditch, and setting sump is respectively corresponded, pass through setting
Forced-ventilated water pump and pipeline finally enter municipal sewage pipe network or river by sedimentation basin processing heel row successively by water up one layer of transport
Road.The construction method is easy to operate, reduces the operation difficulty of construction site, at low cost, in large area, deep foundation pit earthwork digging
In construction, it can effectively solve the problem that the problem of surface water such as foundation pit underground water and rainwater cause Foundation Pit Construction, guarantee simultaneously
Earth excavation and main structure construction progress.
Further, top of the slope gutter ring group cheats elongated setting, and solid block is built, cement plaster, and 2% gradient is general
Water.To effectively by the water in top of the slope gutter by precipitating heel row into place river or municipal wastewater pipe.
Further, the side slope angle of slope is i=1:1.5, to facilitate gradient flashing.
Further, the side slope is the C20 pea gravel concreten slope protection surface layer with a thickness of 100mm.By the way that slope protection face is arranged
Layer, can prevent soil mass of foundation pit from collapsing, guarantee the construction safety of foundation pit.
Further, in order to effectively be drained, the foundation pit internal drainage ditch ring group cheats elongated setting.Bottom four in foundation pit
The setting of Zhou Caiyong concrete gutter, that is, form the foundation pit internal drainage ditch of concrete structure, ditch depth 200mm, wide 500mm, toed-out shape
Shape, side slope are made of 100mm thickness C20 prefabricated board, and bear down on one 100mmC20 concrete, and bottom of trench uses C20 concreting, thickness
100mm.Further, the top of the slope gutter is closed equipped with concrete cover, and reserved opening.Foundation pit top of the slope is along construction road
The gutter 800mm × 800mm, that is, top of the slope gutter is set, is handled using concrete cover closure, and reserved opening can be such that ponding is discharged into
In ditch, is handled after through sedimentation basin and be discharged into place river or municipal sewage pipe network.
Further, it is contemplated that the infiltration of base mine water during foundation pit construction is accelerated to improve drainage efficiency
The drainage efficiency in top of the slope gutter and bottom of slope gutter a, so that sump is arranged in aforementioned gutter at spacing intervals.When
So, in conjunction with construction cost and drainage efficiency, which is 40m~60m.
Further, in order to keep gravity dam more stable, skirt ruggedized construction, the base are additionally provided on the outside of the gravity dam
Hole internal drainage ditch side is connect with the gravity dam, and the other side is connect with the skirt ruggedized construction.The gravity dam of foundation pit be for
Prevent the soil body from sliding into foundation pit.
Detailed description of the invention
Fig. 1 is schematic diagram of an embodiment of the present invention for the forced-ventilated water system of super-sized foundation pit.
In figure:
10- top of the slope gutter, 11- top of the slope water-stop curtain；20- bottom of slope gutter, 21- bottom of slope sump；The light-duty well of 30-
Point；40- foundation pit internal drainage ditch；50- gravity dam；60- slope protection surface layer；The skirt 70- ruggedized construction.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes a kind of forced-ventilated water for super-sized foundation pit
System is described in further detail.According to following explanation, will be become apparent from feature the advantages of the utility model.It below will be by institute
The embodiment combination attached drawing enumerated, is described in detail the technology contents and feature of the utility model.Need in addition it illustrate, attached drawing is equal
Using very simplified form and using non-accurate ratio, only to convenient, lucidly aid illustration the utility model is real
Apply the purpose of example.For sake of convenience, "upper" described below, "lower" are consistent with the upper and lower direction of attached drawing, but this cannot be at
For the limitation of technical solutions of the utility model.
Embodiment one
It is illustrated with reference to Fig. 1 the structure composition of the forced-ventilated water system for super-sized foundation pit of the utility model.
Referring to FIG. 1, a kind of forced-ventilated water system for super-sized foundation pit, the foundation pit by top of the slope road second level slope extremely
Foundation pit platform, subsequent earth excavation to bottom of foundation ditch, the forced-ventilated water system include that Deep Pumped Wells combine the three layers of bright row that catchments
Measure specifically includes: top of the slope gutter 10, top of the slope sump, light well point 30, bottom of slope gutter 20, bottom of slope sump 21, base
Cheat internal drainage ditch 40, top of the slope gutter 10 is arranged along foundation pit top of the slope water-stop curtain 11, top of the slope gutter 10 and place river or
The connection of person's municipal sewage pipe network；One top of the slope sump is set at spacing intervals in top of the slope gutter 10；Light well point 30
Between top of the slope water-stop curtain 11 and top of the slope gutter 10；Bottom of slope gutter 20 is set at foundation pit platform；Bottom of slope gutter 20
In a bottom of slope sump 21 is set at spacing intervals, forced-ventilated water pump and pipeline are set at bottom of slope sump 21 by water and are evacuated to slope
In top row ditch 10；Foundation pit internal drainage ditch 40 is set to the outside of gravity dam 50, and forced-ventilated water pump is arranged at foundation pit internal drainage ditch 40
Water is sent into bottom of slope gutter 20 with pipeline.
Specifically, the forced-ventilated water system for super-sized foundation pit of the present embodiment, including top of the slope gutter 10 and correspondence
Top of the slope sump is set, and bottom of slope gutter 20 is simultaneously correspondingly arranged bottom of slope sump 21, further includes row in light well point 30 and foundation pit
Ditch 40, and given the water in foundation pit internal drainage ditch 40 into bottom of slope gutter 20 by forced-ventilated water pump and pipeline, by bottom of slope collection
Water at well 21 is evacuated in top of the slope gutter 10, to form the bright drainage system of multilayer.By the way that the bright gutter of multilayer is arranged, by
Grade carries out forced-ventilated water, and reasonable drainage pattern optimizes construction site, and drainage system is more reasonable.The forced-ventilated water system is for multiple
Miscellaneous base pit engineering has good applicability, it can be ensured that foundation pit is not influenced to cause slope failure, ground impaired etc. by ponding
Unfavorable factor.After construction site is influenced by unfavourable weathers such as heavy rain, typhoons, multilayer forced-ventilated aqueous systems can effective operation,
And restoring scene construction speed in Yu Yi, it is significantly reduced ponding harm caused by construction site.
In the present embodiment, it is highly preferred that 10 ring group of top of the slope gutter cheats elongated setting, solid block is built, and cement is smeared
Face, 2% gradient flashing.To effectively that the water in top of the slope gutter 10 is dirty by precipitating heel row to place river or municipal administration
In water pipe.
In the present embodiment, it is highly preferred that the side slope angle of slope is i=1:1.5, to facilitate gradient flashing.
In the present embodiment, it is highly preferred that side slope is the C20 pea gravel concreten slope protection surface layer 60 with a thickness of 100mm.Pass through
Slope protection surface layer 60 is set, can prevent soil mass of foundation pit from collapsing, guarantee the construction safety of foundation pit.
In the present embodiment, it is highly preferred that in order to effectively be drained, 40 ring group of foundation pit internal drainage ditch cheats elongated setting.
Bottom surrounding is arranged using concrete gutter in foundation pit, that is, forms the foundation pit internal drainage ditch 40 of concrete structure, ditch depth 200mm, wide
500mm, toed-out shape, side slope are made of 100mm thickness C20 prefabricated board, and bear down on one 100mmC20 concrete, and bottom of trench uses C20
Concreting, thickness 100mm.
In the present embodiment, it is highly preferred that top of the slope gutter 10 is closed equipped with concrete cover, and reserved opening.Foundation pit
The gutter 800mm × 800mm, that is, top of the slope gutter is arranged along construction road in top of the slope, is handled using concrete cover closure, and hole to be provided
Mouth can be such that ponding is discharged into ditch, handle after through sedimentation basin and be discharged into place river or municipal sewage pipe network.
In the present embodiment, more preferably, it is contemplated that the infiltration of base mine water during foundation pit construction, in order to improve
Drainage efficiency accelerates the drainage efficiency in top of the slope gutter 10 and bottom of slope gutter 20, so that aforementioned gutter is at spacing intervals
One sump is set.Certainly, in conjunction with construction cost and drainage efficiency, which is 40m~60m.
In the present embodiment, it is highly preferred that in order to keep gravity dam 50 more stable, the outside of gravity dam 50 is additionally provided with skirt and adds
Fixing structure 70,40 side of foundation pit internal drainage ditch are connect with gravity dam 50, and the other side is connect with skirt ruggedized construction 70.Skirt reinforces
Structure 70 is that hall setting is expired at the three axes agitating pile hole bottom of 5m thickness.The gravity dam 50 of foundation pit is that the soil body is sliding into foundation pit in order to prevent
It moves.
With continued reference to FIG. 1, the present embodiment additionally provides a kind of construction party of forced-ventilated water system for super-sized foundation pit
Method, the construction method include:
Top of the slope gutter 10 is excavated along construction road in foundation pit top of the slope, and is closed by precast concrete cover, and stay
Hole is connected to top of the slope gutter 10 with place river or municipal wastewater pipe；
Light well point 30 is set between foundation pit top of the slope water-stop curtain 11 and top of the slope gutter 10；Light well point 30 is along foundation pit four
Week or side sink to the thinner well casing of diameter in the water-bearing layer for being deeper than substrate, and well casing top is connect with general pipeline, pass through general pipeline benefit
Underground water is concentrated from well point with pumping equipment and extracts out and drains into corresponding location, original level of ground water is made to be reduced to substrate or less.
Bottom of slope gutter 20 is excavated along foundation pit bottom of slope, and more obvious and bottom of slope is arranged in foundation pit corner in ponding in advance
Sump 21；
Foundation pit internal drainage ditch 40 and corresponding sump are completed in earth excavation and structure construction procedure；
Forced-ventilated water pump is set at foundation pit internal drainage ditch 40 and pipeline send water into bottom of slope gutter 20, bottom of slope sump 21
Water is evacuated in top of the slope gutter 10 by place's setting forced-ventilated water pump and pipeline, to complete the building of multilayer gutter drainage system.
The construction method, it then passes through earth excavation to foundation pit by foundation pit top of the slope road second level slope to foundation pit platform
Bottom combines the form of the three layers of bright row that catchments, i.e. row in top of the slope gutter, bottom of slope gutter and foundation pit using Application of light well point precipitation
Ditch, and setting sump is respectively corresponded, by setting forced-ventilated water pump and pipeline successively by water up one layer of transport, finally pass through
Sedimentation basin processing heel row enters municipal sewage pipe network or river.The construction method is easy to operate, and the operation for reducing construction site is difficult
Degree, it is at low cost, in large area, deep foundation pit earthwork digging construction, it can effectively solve the problem that the surface water such as foundation pit underground water and rainwater
The problem of Foundation Pit Construction is caused, while guaranteeing earth excavation and main structure construction progress.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want
Seek the protection scope of book.
Claims (8)
1. a kind of forced-ventilated water system for super-sized foundation pit, which is characterized in that the foundation pit by top of the slope road second level slope extremely
Foundation pit platform, subsequent earth excavation to bottom of foundation ditch, the forced-ventilated water system include:
Top of the slope gutter, the top of the slope gutter are arranged along the foundation pit top of the slope water-stop curtain, the top of the slope gutter and field
Area river or municipal sewage pipe network connection；
A top of the slope sump is arranged in the top of the slope gutter in top of the slope sump at spacing intervals；
Light well point, the light well point is between the top of the slope water-stop curtain and the top of the slope gutter；
Bottom of slope gutter, the bottom of slope gutter are set at foundation pit platform；
A bottom of slope sump, the bottom of slope sump is arranged in the bottom of slope gutter in bottom of slope sump at spacing intervals
Water is evacuated in the top of the slope gutter by place's setting forced-ventilated water pump and pipeline；
Foundation pit internal drainage ditch, the foundation pit internal drainage ditch are set to the outside of gravity dam, and setting is strong at the foundation pit internal drainage ditch
Draining pump and pipeline send water into the bottom of slope gutter.
2. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the top of the slope gutter
Ring group cheats elongated setting, and solid block is built, cement plaster, 2% gradient flashing.
3. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the side slope angle of slope
For i=1:1.5.
4. the forced-ventilated water system according to claim 3 for super-sized foundation pit, which is characterized in that the side slope is thickness
For the C20 pea gravel concreten slope protection surface layer of 100mm.
5. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the foundation pit internal drainage
Ditch ring group cheats elongated setting.
6. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the top of the slope gutter
It is closed equipped with concrete cover, and reserved opening.
7. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that a fixed spacing is
40m~60m.
8. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that outside the gravity dam
Side is additionally provided with skirt ruggedized construction, and the foundation pit internal drainage ditch side is connect with the gravity dam, and the other side adds with the skirt
Fixing structure connection.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555141A (en) * | 2018-12-24 | 2019-04-02 | 上海建工二建集团有限公司 | A kind of forced-ventilated water system and construction method for super-sized foundation pit |
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- 2018-12-24 CN CN201822170191.2U patent/CN209585078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555141A (en) * | 2018-12-24 | 2019-04-02 | 上海建工二建集团有限公司 | A kind of forced-ventilated water system and construction method for super-sized foundation pit |
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