CN108755594B - A kind of two walls folder plastic film construction method for sand Seepage cutoff of dike foundation - Google Patents
A kind of two walls folder plastic film construction method for sand Seepage cutoff of dike foundation Download PDFInfo
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- CN108755594B CN108755594B CN201810586023.3A CN201810586023A CN108755594B CN 108755594 B CN108755594 B CN 108755594B CN 201810586023 A CN201810586023 A CN 201810586023A CN 108755594 B CN108755594 B CN 108755594B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- 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
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
Abstract
The present invention relates to a kind of two walls for sand Seepage cutoff of dike foundation to press from both sides plastic film construction method, it is to including at least seepage-proof trough (1), plastic film (2), it backfills clay (3), meet water side stirring pile element wall (4), land side stirring pole cut-off wall (5) and the sand Seepage cutoff of dike foundation curtain of two sides overlap joint stirring pole cut-off wall (6) building carry out Seal treatment, it is characterized in that, specific step is as follows: the first step, determine vertical plastic spreading slotted line: second step, carry out vertical plastic spreading construction: third step, it is stirred pile driving construction: the 4th step, side stirring pile element wall (4) and land side stirring pole cut-off wall (5) closing that will meet water overlaps.The present invention is able to solve vertical plastic spreading and cuts the problem for seeping the overlap joint processing of curtain and deep-mixed pile section infiltration curtain, in favor of forming more economic and practical combination section infiltration curtain.Application benefit of the invention is significant, and has very wide market promotion prospect.
Description
Technical field
It is cut the invention belongs to hydraulic engineering dyke and seeps technical field of construction, be used for sand Seepage cutoff of dike foundation more particularly to one kind
Two walls press from both sides plastic film construction method.
Technical background
It is that dyke relatively conventional in China's hydraulic engineering cuts infiltration technology that vertical plastic spreading, which cuts and blends deep-mixed pile to cut infiltration,.?
Vertical cut is seeped in work progress, is cut and is seeped film or concrete seepage-prevention wall is usually embedded in dykes and dams and meets water the dam root of side, to cut off dam
Penetrating passage below root in stratum protects the safety of dykes and dams, and construction process is mature, and seepage preventing effect is preferable.
However for most river levees and river dike, individually have difficulties with above method construction, the reason is as follows that:
1, because the factors such as geology, landforms, the hydrology and artificial building facility act on, entire dyke is not straight line regular distribution,
Many places dike section is there are at sharp turn and big inflection point, as shown in Figure 1.And cut and seeped in work progress in vertical plastic spreading, paving modeling groover
It can only be run along guide rail, construction equipment round and smooth cannot slot at levee body sharp turn and inflection point, therefore vertical plastic spreading is in construction to dike
It can not turn along levee body when body corner, section infiltration curtain which will lead to dyke all fronts cannot be closed, cannot be completely cut off
Seepage channel.This allows for single application vertical plastic spreading section cementation process and is difficult to meet section infiltration requirement of dyke all fronts.
2, most dykes side bank protection that meets water plants a large amount of forest against wave wash, is work of controlling flood for wave resistance bank protection and materials of speedily carrying out rescue work
The important component of journey and the effective barrier for resisting flood.But the limb of these forest against wave wash is luxuriant, and aerial coverage area is big, adds
Nearby high-tension bus-bar, cable exist, these for mixing pile machine construct generate obstruction.If dyke completely uses mixing pile machine
Construction, then early period must clear up barrier along the line, and forest against wave wash felling and electric wire stake mobile working amount are then relatively large.From applying
Work cost and time, which consider, sets out, and the infiltration engineering of cutting of dyke all fronts only can not achieve with mixing pile machine construction.
3, the defect of traditional handicraft: the bridging method that two kinds of traditional differences cut infiltration curtain is high-injection technique.Due to its work
Journey cost is (about 300 yuan/m higher2), significantly larger than unit price (the 60-80 member/m of vertical plastic spreading and stirring pole cut-off wall technique2), therefore
High spray method is also a kind of section infiltration technology of auxiliary generally only as difficult work processing.In conclusion using vertical plastic spreading with
The construction of deep-mixed pile combination technique is relatively reasonable, actual solution.The program uses vertical plastic spreading in straight dike section,
Implement deep-mixed pile cut-off wall at levee body sharp turn and inflection point.The program only needs to cut down a small amount of lap-joint's forest against wave wash trees, applies
Work efficiency rate significantly improves.But the overlap joint processing technique that two kinds of differences of vertical plastic spreading and deep-mixed pile cut infiltration curtain is still to construct
Where the difficult point of journey.Therefore, it is imperative to explore a kind of economic, applicable two kinds of differences section infiltration curtain overlapping technology.
Summary of the invention
It is a kind of for sand Seepage cutoff of dike foundation the purpose of the present invention is being provided to overcome the shortcomings of the prior art
Two walls press from both sides plastic film construction method, and the present invention is able to solve vertical plastic spreading and cuts the lap-joint for seeping curtain and deep-mixed pile section infiltration curtain
The problem of reason seeps curtain in favor of forming more economic and practical combination and cutting.
A kind of two walls for sand Seepage cutoff of dike foundation proposed according to the present invention press from both sides plastic film construction method, are to including at least
Seepage-proof trough, plastic film backfill clay, the side stirring pile element wall that meets water, land side stirring pole cut-off wall and two sides overlap joint mixing pile section
The sand Seepage cutoff of dike foundation curtain for seeping wall construction carries out Seal treatment, which is characterized in that specific step is as follows:
The first step determines vertical plastic spreading slotted line: precisely determining and recording the fluting starting point and seepage-proof trough slot of seepage-proof trough
The position line of hole land side finds plastic film position accurately for mixing pile machine and carries out construction positioning；
Second step carries out vertical plastic spreading construction: by plastic film paving in the cell wall of land side, from the starting point for excavating seepage-proof trough
Meter, into seepage-proof trough, addition backfills clay in its 10~15 meters of length ranges, and backfill clay is made to meet water in side channel hole in plastic film
Consolidation；
Third step is stirred pile driving construction: after the vertical plastic spreading construction described in second step is completed 14 days, along vertical plastic spreading
It cuts infiltration curtain two sides and meet water side stirring pile element wall and land side stirring pole cut-off wall two rows mixing pile is respectively set；It is described to meet water
It is equipped between side stirring pile element wall and plastic film and destroys the safety of plastic film due to side stirring pile element wall contacts plastic film because preventing from meeting water
Distance；It is equipped between the land side stirring pole cut-off wall and plastic film and is broken because preventing land side stirring pole cut-off wall from contacting plastic film
The safe distance of bad plastic film；Meet water side stirring pile element wall and backfill clay between formed can make vertical plastic spreading cut seep curtain with
Deep-mixed pile cuts the lap width for seeping curtain seamless interfacing；
4th step, will meet water side stirring pile element wall and land side stirring pole cut-off wall closing overlap joint: cut along vertical plastic spreading
Seep curtain front end will meet water described in third step side stirring pile element wall and land side stirring pole cut-off wall return and form closing
Docking, then two sides overlap joint stirring pole cut-off wall is completed in the joint of vertical plastic spreading and the side stirring pile element wall that meets water to sand
The Seal treatment of levee foundation seepage proof curtain.
Realization principle of the invention is: cannot round and smooth traveling and depth at dykes and dams inflection point for vertical plastic spreading fluting apparatus
Occupied space biggish problem in high-altitude when layer mixing pile machine construction, the present invention are lower compared to sand infiltration coefficient according to cohesive soil
The characteristics of, water blocking is carried out with sticky core wall and cuts infiltration, and ensures the safe and effective of plastic film, and the peace of churned pile wall and plastic film is set
Full distance, for avoid the occurrence of water around seep phenomenon, design churned pile wall and backfill clay lap width, vertical plastic spreading is made with this
Curtain closing is combined with deep-mixed pile.
Its remarkable advantage is the present invention compared with prior art:
First, this method uses vertical plastic spreading and deep-mixed pile combination construction, in side stirring pile element wall and the slot of meeting water
Wall plastic film lap-joint makes to cut and seeps curtain seamless interfacing by backfill clay medium overlap joint connection.
Second, the spacing between stirring pole cut-off wall and plastic film is set, avoids bit breakage plastic film occur in lap-joint existing
As making two kinds of curtains close to without destroying.
Third cuts infiltration curtain front end in vertical plastic spreading and beats two rows of mixing piles, forms two rows of cut-off walls, increase seepage paths, from
And it ensure that cut and seep quality.
4th, it is constructed using vertical plastic spreading and deep-mixed pile combination, avoids the urgency faced with single mode
The problems such as curved construction and spatial obstacle, improve construction efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram that river dike belongs to more anxious turn dike section distributions.
Fig. 2 is that two walls proposed by the present invention for sand Seepage cutoff of dike foundation press from both sides plastic film construction method realization mixing pile and geotechnique
The schematic diagram of film lap-joint overlap joint state.
Number in Fig. 2: seepage-proof trough 1, plastic film 2, backfill clay 3, meet water side stirring pile element wall 4, land side mixing pile
Cut-off wall 5, two sides overlap stirring pole cut-off wall 6.
Fig. 3 is that the implementation steps box that two walls proposed by the present invention for sand Seepage cutoff of dike foundation press from both sides plastic film construction method shows
It is intended to.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
In conjunction with Fig. 1, Fig. 2 and Fig. 3, a kind of two walls folder plastic film construction party for sand Seepage cutoff of dike foundation proposed by the present invention
Method is that seepage-proof trough 1, plastic film 2, backfill clay 3, meet water side stirring pile element wall 4, land side stirring pole cut-off wall to including at least
5 and two sides overlap joint stirring pole cut-off wall 6 construct sand Seepage cutoff of dike foundation curtain carry out Seal treatment, the specific steps are as follows:
The first step, determines vertical plastic spreading slotted line: precisely determining and recording the fluting starting point and seepage-proof trough of seepage-proof trough (1)
The position line of slot land side finds plastic film (2) position accurately for mixing pile machine and carries out construction positioning；
Second step carries out vertical plastic spreading construction: by plastic film (2) paving in the cell wall of land side, from excavation seepage-proof trough (1)
Starting point meter, addition backfill clay (3) into seepage-proof trough (1), is moulding backfill clay (3) in its 10~15 meters of length ranges
Film (2) meets water and consolidates in side channel hole；Wherein:
It is described backfill clay (3) with a thickness ofIn formula: P is the most flood for backfilling clay (3) and vertically bearing
Head, JViscous maxLimit hydraulic steps, K when floating critical state to dispersion by consolidating for backfill clay (3) are safety coefficient.
Third step is stirred pile driving construction: after the vertical plastic spreading construction described in second step is completed 14 days, along vertical plastic spreading
It cuts infiltration curtain two sides and meet water side stirring pile element wall (4) and the two rows of mixing piles of land side stirring pole cut-off wall (5) is respectively set；Institute
It states to meet water and be equipped between side stirring pile element wall (4) and plastic film (2) because preventing side stirring pile element wall (4) the contact plastic film that meets water
(2) safe distance of plastic film (2) is destroyed；It is equipped between the land side stirring pole cut-off wall (5) and plastic film (2) because preventing from carrying on the back
Water side stirring pole cut-off wall (5) contact plastic film (2) and destroy the safe distances of plastic film (2)；Meet water side stirring pile element wall (4) with
It is wide that the overlap joint that vertical plastic spreading section infiltration curtain can be made to seep curtain seamless interfacing with deep-mixed pile section is formed between backfill clay (3)
Degree；
Wherein, the length for meeting water side stirring pile element wall (4) isIn formula: T is the side mixing pile list that meets water
Maximum head clay (3) laterally born is backfilled between first wall (4) and plastic film (2)；Side stirring pile element wall (4) that meets water,
Safe distance of the land side stirring pole cut-off wall (5) respectively between plastic film (2) beMeet water side mixing pile
The lap width d of unit wall (4) and backfill clay (3)2For d2=d-d1, in formula: Q is that the side that meets water is stirred pile element wall (4) and carried on the back
Ultimate power, F when water side stirring pole cut-off wall (5) destroyseIt is antiseepage to backfill the expansive force, d of clay (3) unit volume
Slot (1) groove width；
4th step, side stirring pile element wall (4) that will meet water is closed with land side stirring pole cut-off wall (5) to be overlapped: along vertical
Paving modeling cut seep a curtain front end will meet water described in third step side stirring pile element wall (4) and land side stirring pole cut-off wall (5) friendship
Closed and butted is returned and is formed, then two sides overlap joint stirring pole cut-off wall (6) is in vertical plastic spreading and side stirring pile element wall (4) that meets water
Joint complete to the Seal treatment of sand levee foundation seepage proof curtain.
Concrete application embodiment of the invention is disclosed in conjunction with Fig. 1-3.
Embodiment 1:
If certain section of dyke is located on sand levee foundation, the length of the dyke is 1120 meters, dike is 15~20 meters wide, dike is high by 15
Rice.This section of dyke has the first sharp turn section at 430 meters, and the inflection point angle of the first sharp turn section is 30 °, separately has at 840 meters
The inflection point angle of second sharp turn section, the second sharp turn section is 45 °.
Implement dyke according to set condition and cut infiltration engineering, construction is moulded using conventional vertical paving in dyke straightway first,
The seepage-proof trough (1) of 2.5 meters of wide vertical plastic spreadings is formed, is then pressed from both sides using two walls proposed by the present invention for sand Seepage cutoff of dike foundation
Plastic film construction method to the first sharp turn of dyke section the first inflection point at construct, the specific steps are as follows:
The first step, determines vertical plastic spreading slotted line: precisely determining and recording the fluting starting point and seepage-proof trough of seepage-proof trough (1)
The position line of slot land side finds plastic film (2) position accurately for mixing pile machine and carries out construction positioning；
Second step carries out vertical plastic spreading construction: by plastic film (2) paving in the cell wall of land side, from excavation seepage-proof trough (1)
Starting point meter, addition backfill clay (3) into seepage-proof trough (1), meets backfill clay (3) in plastic film (2) in its 10 meters of length
It is consolidated in water side channel hole, wherein it is 75% swelled ground that backfill clay (3), which selects free swelling rate, is vertically born
Maximum head is 0.4m, and the maximum head laterally born is 0.118m, by consolidating limit water when floating critical state to dispersion
Force gradient is 0.12, and the expansive force of unit volume is 0.27MPa；The thickness for backfilling clay (3) presses above-mentioned formulaMeter
Calculate, safety coefficient K takes 1.5, obtain backfill clay (3) with a thickness of 5 meters；
Third step is stirred pile driving construction: the vertical plastic spreading described in second step is 14 days full after the completion of construction, selects stirring
The diameter of drill bit of pile machine be 350mm, drilling rod central spindle away from be 450mm, along vertical plastic spreading cut infiltration curtain two sides the side that meets water is respectively set
Stir the two rows of mixing piles of pile element wall (4) and land side stirring pole cut-off wall (5), design meet water side stir pile element wall (4) and
Ultimate power when land side stirring pole cut-off wall (5) destroys is 0.3MPa；Side stirring pile element wall (4) that meets water, back
It is respectively equipped between water side stirring pole cut-off wall (5) and plastic film (2) because side stirring pile element wall (4) that prevents from meeting water, land side stir
The safe distance that a cut-off wall (5) contact plastic film (2) and destroy plastic film (2) is mixed, the safe distance is according to above-mentioned formulaIt calculates, obtaining safe distance is 100mm；Meet water side stirring pile element wall (4) and backfill clay (3)
Between formed and vertical plastic spreading can be made to cut seep curtain and deep-mixed pile and cut the lap width for seeping curtain seamless interfacing, the overlap joint is wide
Degree is according to above-mentioned formula d2=d-d1It calculates, obtaining lap width is 150mm；The length of side stirring pile element wall (4) that meets water
According to above-mentioned formulaIt calculates, obtaining length is 1475mm；
4th step, side stirring pile element wall (4) that will meet water is closed with land side stirring pole cut-off wall (5) to be overlapped: along vertical
Paving modeling cut seep a curtain front end will meet water described in third step side stirring pile element wall (4) and land side stirring pole cut-off wall (5) friendship
Closed and butted is returned and is formed, then two sides overlap joint stirring pole cut-off wall (6) is in vertical plastic spreading and side stirring pile element wall (4) that meets water
Joint complete to the Seal treatment of sand levee foundation seepage proof curtain.
Using the two walls folder plastic film construction method proposed by the present invention for sand Seepage cutoff of dike foundation to the second sharp turn of dyke section
Second Inflexion Point at the step of being constructed at the first inflection point of the specific steps constructed and above-mentioned the first sharp turn of dyke section
It is identical.
Embodiment 2:
If certain section of dyke is located on sand levee foundation, dyke length is 360 meters, dike is 15~20 meters wide, dike is 15 meters high.This section of dike
Prevent there is sharp turn section at 180 meters, the inflection point angle of sharp turn section is 35 °.
This section of dyke, which is cut, seeps engineering in dyke straightway using conventional vertical paving modeling construction, forms 2.5 meters wide of vertical paving
The seepage-proof trough (1) of modeling, then using the two walls folder plastic film construction method proposed by the present invention for sand Seepage cutoff of dike foundation to dyke
It constructs at first inflection point of sharp turn section.Steps are as follows for Specific construction:
The first step, determines vertical plastic spreading slotted line: precisely determining and recording the fluting starting point and seepage-proof trough of seepage-proof trough (1)
The position line of slot land side finds plastic film (2) position accurately for mixing pile machine and carries out construction positioning；
Second step carries out vertical plastic spreading construction: by plastic film (2) paving in the cell wall of land side, from excavation seepage-proof trough (1)
Starting point meter, addition backfill clay (3) into seepage-proof trough (1), meets backfill clay (3) in plastic film (2) in its 12 meters of length
It is consolidated in water side channel hole, wherein it is 40% swelled ground that backfill clay (3), which selects free swelling rate, is vertically born
Maximum head is 0.26m, and the maximum head laterally born is 0.068m, by consolidating limit water when floating critical state to dispersion
Force gradient is 0.07, and the expansive force of unit volume is 0.065MPa；The thickness for backfilling clay (3) presses above-mentioned formula
Calculate, safety coefficient K takes 1.5, obtain backfill clay (3) with a thickness of 5.6 meters；
Third step is stirred pile driving construction: the vertical plastic spreading described in second step is 14 days full after the completion of construction, selects stirring
The diameter of drill bit of pile machine be 350mm, drilling rod central spindle away from be 450mm, along vertical plastic spreading cut infiltration curtain two sides the side that meets water is respectively set
Stir the two rows of mixing piles of pile element wall (4) and land side stirring pole cut-off wall (5), design meet water side stir pile element wall (4) and
Ultimate power when land side stirring pole cut-off wall (5) destroys is 0.3MPa；Side stirring pile element wall (4) that meets water, back
It is respectively equipped between water side stirring pole cut-off wall (5) and plastic film (2) because side stirring pile element wall (4) that prevents from meeting water, land side stir
The safe distance that a cut-off wall (5) contact plastic film (2) and destroy plastic film (2) is mixed, the safe distance is according to above-mentioned formulaIt calculates, obtaining safe distance is 98mm；It meets water between side stirring pile element wall (4) and backfill clay (3)
Being formed, which can be such that vertical plastic spreading cuts, seeps the lap width that curtain seeps curtain seamless interfacing with deep-mixed pile section, which presses
According to above-mentioned formula d2=d-d1It calculates, obtaining lap width is 152mm；It is described meet water side stirring pile element wall (4) length according to
Above-mentioned formulaIt calculates, obtaining length is 1475mm；
4th step, side stirring pile element wall (4) that will meet water is closed with land side stirring pole cut-off wall (5) to be overlapped: along vertical
Paving modeling cut seep a curtain front end will meet water described in third step side stirring pile element wall (4) and land side stirring pole cut-off wall (5) friendship
Closed and butted is returned and is formed, then two sides overlap joint stirring pole cut-off wall (6) is in vertical plastic spreading and side stirring pile element wall (4) that meets water
Joint complete to the Seal treatment of sand levee foundation seepage proof curtain.
Embodiment 3:
If certain section of dyke is located on sand levee foundation, dyke length is 520 meters, dike is 15~20 meters wide, dike is 15 meters high.This section of dike
Prevent there is sharp turn section at 310 meters, the inflection point angle of sharp turn section is 27 °.
This section of dyke, which is cut, seeps engineering in dyke straightway using conventional vertical paving modeling construction, forms 2.5 meters wide of vertical paving
The seepage-proof trough (1) of modeling, then using the two walls folder plastic film construction method proposed by the present invention for sand Seepage cutoff of dike foundation to dyke
It constructs at first inflection point of sharp turn section.Steps are as follows for Specific construction:
The first step, determines vertical plastic spreading slotted line: precisely determining and recording the fluting starting point and seepage-proof trough of seepage-proof trough (1)
The position line of slot land side finds plastic film (2) position accurately for mixing pile machine and carries out construction positioning；
Second step carries out vertical plastic spreading construction: by plastic film (2) paving in the cell wall of land side, from excavation seepage-proof trough (1)
Starting point meter, addition backfill clay (3) into seepage-proof trough (1), meets backfill clay (3) in plastic film (2) in its 15 meters of length
It is consolidated in water side channel hole, wherein it is 60% swelled ground that backfill clay (3), which selects free swelling rate, is vertically born
Maximum head is 0.37m, and the maximum head laterally born is 0.0885m, by consolidating limit when floating critical state to dispersion
Hydraulic gradient is 0.09, and the expansive force of unit volume is 0.212MPa；The thickness for backfilling clay (3) presses above-mentioned formulaCalculate, safety coefficient K takes 1.5, obtain backfill clay (3) with a thickness of 6.2 meters；
Third step is stirred pile driving construction: the vertical plastic spreading described in second step is 14 days full after the completion of construction, selects stirring
The diameter of drill bit of pile machine be 350mm, drilling rod central spindle away from be 450mm, along vertical plastic spreading cut infiltration curtain two sides the side that meets water is respectively set
Stir the two rows of mixing piles of pile element wall (4) and land side stirring pole cut-off wall (5), design meet water side stir pile element wall (4) and
Ultimate power when land side stirring pole cut-off wall (5) destroys is 0.3MPa；Side stirring pile element wall (4) that meets water, back
It is respectively equipped between water side stirring pole cut-off wall (5) and plastic film (2) because side stirring pile element wall (4) that prevents from meeting water, land side stir
The safe distance that a cut-off wall (5) contact plastic film (2) and destroy plastic film (2) is mixed, the safe distance is according to above-mentioned formulaIt calculates, obtaining safe distance is 103mm；It meets water between side stirring pile element wall (4) and backfill clay (3)
Being formed, which can be such that vertical plastic spreading cuts, seeps the lap width that curtain seeps curtain seamless interfacing with deep-mixed pile section, which presses
According to above-mentioned formula d2=d-d1It calculates, obtaining lap width is 147mm；It is described meet water side stirring pile element wall (4) length according to
Above-mentioned formulaIt calculates, obtaining length is 1475mm；
4th step, side stirring pile element wall (4) that will meet water is closed with land side stirring pole cut-off wall (5) to be overlapped: along vertical
Paving modeling cut seep a curtain front end will meet water described in third step side stirring pile element wall (4) and land side stirring pole cut-off wall (5) friendship
Closed and butted is returned and is formed, then two sides overlap joint stirring pole cut-off wall (6) is in vertical plastic spreading and side stirring pile element wall (4) that meets water
Joint complete to the Seal treatment of sand levee foundation seepage proof curtain.
After completion of works described in embodiment 1-3, through quality testing and actual motion sight control, it was confirmed that the application present invention
A kind of two walls folder plastic film construction method (i.e. " two walls press from both sides plastic film " overlap joint processing technique) symbol for sand Seepage cutoff of dike foundation of proposition
It closes design requirement and can satisfy dike seepage control quality standard, application benefit of the invention is significant, and has very wide city
Field promotion prospect.
The present invention is suitable for all kinds of Seepage cutoff of dike foundation engineerings, and cuts in infiltration engineering in multinomial dyke and examined, improved, promoted
And application.
Claims (5)
1. a kind of two walls for sand Seepage cutoff of dike foundation press from both sides plastic film construction method, be to include at least seepage-proof trough (1), plastic film (2),
Backfill clay (3), side stirring pile element wall (4) that meets water, land side stirring pole cut-off wall (5) and two sides overlap joint stirring pole cut-off wall
(6) the sand Seepage cutoff of dike foundation curtain constructed carries out Seal treatment, which is characterized in that specific step is as follows:
The first step, determines vertical plastic spreading slotted line: precisely determining and recording the fluting starting point and seepage-proof trough slot of seepage-proof trough (1)
The position line of land side finds plastic film (2) position accurately for mixing pile machine and carries out construction positioning；
Second step carries out vertical plastic spreading construction: by plastic film (2) paving in the cell wall of land side, from the starting for excavating seepage-proof trough (1)
Point meter, addition backfill clay (3) into seepage-proof trough (1) in its 10 ~ 15 meters of length ranges make to backfill clay (3) in plastic film (2)
It meets water and consolidates in side channel hole；
Third step is stirred pile driving construction: after the vertical plastic spreading construction described in second step is completed 14 days, cutting and seeps along vertical plastic spreading
Meet water side stirring pile element wall (4) and the two rows of mixing piles of land side stirring pole cut-off wall (5) are respectively set in curtain two sides；It is described to meet
Be equipped between water side stirring pile element wall (4) and plastic film (2) because the side that prevents from meeting water stir pile element wall (4) contact plastic film (2) due to
Destroy the safe distance of plastic film (2)；It is equipped between the land side stirring pole cut-off wall (5) and plastic film (2) because preventing land side
Stirring pole cut-off wall (5) contact plastic film (2) and destroy the safe distances of plastic film (2)；Meet water side stirring pile element wall (4) and backfill
Being formed between clay (3), which can be such that vertical plastic spreading cuts, seeps the lap width that curtain seeps curtain seamless interfacing with deep-mixed pile section；
4th step, side stirring pile element wall (4) and land side stirring pole cut-off wall (5) closing that will meet water overlap: along vertical plastic spreading
Cut seep curtain front end will meet water described in third step side stirring pile element wall (4) and land side stirring pole cut-off wall (5) return simultaneously
Closed and butted is formed, then two sides overlap joint stirring pole cut-off wall (6) is cut in vertical plastic spreading seeps curtain and the side stirring pile element that meets water
The joint of wall (4) completes the Seal treatment to sand levee foundation seepage proof curtain.
2. a kind of two walls for sand Seepage cutoff of dike foundation according to claim 1 press from both sides plastic film construction method, which is characterized in that
It is described backfill clay (3) with a thickness of, in formula: P is maximum head, the J for backfilling clay (3) and vertically bearingViscous maxFor
Limit hydraulic steps, the K backfilled when clay (3) float critical state to dispersion by consolidating is safety coefficient.
3. a kind of two walls for sand Seepage cutoff of dike foundation press from both sides plastic film construction method according to claim 1, which is characterized in that institute
State meet water side stirring pile element wall (4) length be, in formula: T is that pile element wall (4) and plastic film are stirred in the side that meets water
(2) maximum head clay (3) laterally born is backfilled between.
4. a kind of two walls for sand Seepage cutoff of dike foundation according to claim 1 press from both sides plastic film construction method, which is characterized in that
Stir the safe distance of pile element wall (4), land side stirring pole cut-off wall (5) respectively between plastic film (2) in the side that meets water, the lap width d of meet water side stirring pile element wall (4) and backfill clay (3)2For, in formula:
Q be meet water side stirring pile element wall (4) and land side stirring pole cut-off wall (5) destruction when ultimate power, FeIt is viscous to backfill
The expansive force, d of native (3) unit volume are seepage-proof trough (1) groove width.
5. a kind of two walls for sand Seepage cutoff of dike foundation according to claim 1 press from both sides plastic film construction method, which is characterized in that
Described side stirring pile element wall (4) contact failure that prevents from meeting water being arranged between side stirring pile element wall (4) and plastic film (2) that meets water
The safe distance of plastic film (2) is 100mm；What is be arranged between land side stirring pole cut-off wall (5) and plastic film (2) prevents land side from stirring
The safe distance for mixing a cut-off wall (5) contact failure plastic film (2) is 100mm；Meet water side stirring pile element wall (4) and backfill clay
(3) being formed between, which can be such that vertical plastic spreading cuts, seeps the lap width that curtain seeps curtain seamless interfacing with deep-mixed pile section
150mm。
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| CN201810586023.3A CN108755594B (en) | 2018-06-08 | 2018-06-08 | A kind of two walls folder plastic film construction method for sand Seepage cutoff of dike foundation |
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| CN108755594B true CN108755594B (en) | 2019-03-29 |
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| CN114703805A (en) * | 2022-04-21 | 2022-07-05 | 广东省水利电力勘测设计研究院有限公司 | Combined seepage-proofing and sewage-intercepting system and method for adjusting plain reservoir |
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| CN101117803A (en) * | 2007-08-23 | 2008-02-06 | 聊城市黄河工程局 | Remolding soil groove-forming plastic spreading construction technique and groove cutting machine |
| CN101191334A (en) * | 2007-12-08 | 2008-06-04 | 青岛银河环保股份有限公司 | Seepage resisting method for plain reservoir |
| CN101225655A (en) * | 2007-12-29 | 2008-07-23 | 中交水运规划设计院有限公司 | Lateral vertically sealing method for vacuum pre-pressed soft soil foundation |
| KR20120115705A (en) * | 2011-04-11 | 2012-10-19 | 원광건설(주) | Soil retaining structure using two rows pile |
| CN107524150A (en) * | 2017-08-28 | 2017-12-29 | 深圳市勘察测绘院有限公司 | A kind of supporting pile protection bores three axes agitating pile foundation pit enclosure water sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101117803A (en) * | 2007-08-23 | 2008-02-06 | 聊城市黄河工程局 | Remolding soil groove-forming plastic spreading construction technique and groove cutting machine |
| CN101191334A (en) * | 2007-12-08 | 2008-06-04 | 青岛银河环保股份有限公司 | Seepage resisting method for plain reservoir |
| CN101225655A (en) * | 2007-12-29 | 2008-07-23 | 中交水运规划设计院有限公司 | Lateral vertically sealing method for vacuum pre-pressed soft soil foundation |
| KR20120115705A (en) * | 2011-04-11 | 2012-10-19 | 원광건설(주) | Soil retaining structure using two rows pile |
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