CN109252531A - The waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting - Google Patents
The waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting Download PDFInfo
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- CN109252531A CN109252531A CN201811309316.3A CN201811309316A CN109252531A CN 109252531 A CN109252531 A CN 109252531A CN 201811309316 A CN201811309316 A CN 201811309316A CN 109252531 A CN109252531 A CN 109252531A
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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
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to the technical fields of water-stop curtain, disclose the waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting, comprising the following steps: (1) construction of mixing pile or rotary churning pile is completed in soil layer；(2) after stake to be mixed or jet grouting pile construction are completed 1-2 days, formation drilling is crept on mixing pile or rotary churning pile with drilling machine；Drilling extends to micro- weathered rock formation downward；(3) sleeve shell material is perfused in drilling, and transfers mini-valve tube, and slip casting is carried out to the soil body by mini-valve tube, overlapped that range is greater than 4m for the slip casting of mixing pile or rotary churning pile and mini-valve tube；(4) mixing pile or rotary churning pile in a row-shaped are formed according to step (1) construction, each mixing pile or each rotary churning pile are in overlap joint arrangement each other.The combination stratum strong applicability of mixing pile or rotary churning pile and sleeve valve barrel grouting is suitable for forming water-stop curtain on various stratum and various depth, meanwhile, it can reach preferable water-stagnating effect.
Description
Technical field
The present invention relates to the technical field of water-stop curtain, in particular to mixing pile or rotary churning pile is combined with sleeve valve barrel grouting
Waterproof curtain construction method.
Background technique
Mixing pile is curing agent using cement based material, mechanical by special deep-layer stirring, on the spot will in ground depths
In-situ soil and curing agent pressure are mixed and stirred, and are formed cement soil structure and are often used as deep basal pit because infiltration coefficient is smaller and deep foundation is opened
Water-stop curtain when digging is that water-stop curtain form is commonly used in engineering；But stake machine power limited, in blocky high wind rock, middle decomposed rock
Pile is unable in equal firm hard formations or very closely knit layer of sand；Also, it is limited by machine capability, pile depth is limited, sealing depth
It is usually no more than m, water-stagnating effect is bad.
Rotary churning pile, the Grouting Pipe for having nozzle, pierces the predetermined position of soil layer, then by slurries with high pressure using drilling machine
The form of stream is projected from nozzle, the impact failure soil body, and high-pressure spray cuts the soil layer blended, is dispersed in particle, a part of slurries
Drilling is taken out of with water, another part is then stirred with slurries, and as slurries are stirred, shotcrete pipe constantly circles round promotion,
During slurries constantly solidify, cement soil structure is formed because infiltration coefficient is smaller and is often used as deep basal pit and Deep Foundation Excavation
When water-stop curtain；But slurries cuts formation is ineffective in firm hard formation and hard rock stratum, and expanded diameter is small, effect is poor.
Sleeve valve barrel grouting is a kind of Geotechnical Engineering that engineer application is relatively broad, common process process are as follows: on stratum
Middle drilling；Sleeve shell material is perfused later；Mini-valve tube is placed later, and mini-valve tube is equipped with unidirectional slurry outlet, to pulp after sleeve shell material solidification
Hole and drilling form closing；Later using can two way seal core pipe merging mini-valve tube in, merogenesis be layered to the ground for needing slip casting
Layer carries out slip casting.
Sleeve valve barrel grouting is one of osmotic grouting, and slurries are filled in soil layer under pressure centered on drilling
Hole and rock stratum in crack, in the earth formation formed the netted slurry arteries and veins complex of tree root, by stratum infiltration reveal coefficient be greatly reduced,
Form water-stagnating effect, suitable for layer of sand and it is blocky it is severely-weathered, the rock stratum more developed of the cracks such as decomposed rock, but its cost is opposite
It is higher, also, be weak floor between sleeve shell material and stratum, it is easy to lead to waste of material very to earth's surface grout when closer from earth's surface
Fail to slip casting, meanwhile, cohesive soil bankets, in the weaker soil layer of permeability such as silt, and water-stagnating effect is bad.
Summary of the invention
The purpose of the present invention is to provide the waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting,
Aim to solve the problem that the bad problem of the water-stagnating effect of water-stop curtain in the prior art.
The invention is realized in this way the waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting,
The following steps are included:
(1) construction of multiple mixing piles or multiple rotary churning piles is completed in soil layer；
(2) after the mixing pile or it is rotary churning pile final set 1-2 days described after, with drilling machine in the mixing pile or the rotary churning pile
Upper drilling forms drilling；The drilling extends to micro- weathered rock formation downward；
(3) sleeve shell material is perfused in the drilling, and transfers mini-valve tube, and slip casting is carried out to the soil body to by mini-valve tube,
Overlapped that range is greater than 4m for the slip casting of the mixing pile or the rotary churning pile and the mini-valve tube.
(4) mixing pile or the rotary churning pile in a row-shaped are formed according to step (1) construction, each mixing pile or
Each rotary churning pile is in overlap joint arrangement each other.
Further, multiple mixing piles or multiple rotary churning piles can be arranged for single shape, each mixing pile
Or the overlap joint range between each rotary churning pile is 150mm-400mm.
Further, multiple mixing piles or multiple rotary churning piles can be arranged for double shape；Along the longitudinal direction, two rows of
The mixing pile or the rotary churning pile are in being arranged in juxtaposition, and taking between two mixing piles or two rotary churning piles
Connecing range is 150mm-400mm；In transverse direction, the overlap joint model of each mixing pile or each rotary churning pile between any two
It encloses for 150mm-400mm.
Further, multiple mixing piles or multiple rotary churning piles can be arranged for three row patterns；Along the longitudinal direction, three row
The mixing pile or the rotary churning pile are sequentially in be arranged in juxtaposition, and the overlap joint model of the mixing pile or the rotary churning pile between any two
It encloses for 150mm-400mm；In transverse direction, the overlap joint range of each mixing pile or each rotary churning pile between any two is
150mm-400mm。
Further, in transverse direction, the distance between center of the two neighboring drilling is formed laterally away from the cross
To away from range be 1000~2000mm.
Further, along the longitudinal direction, the distance between center of the two neighboring drilling forms longitudinal away from described vertical
To away from range be 800~1600mm.
Further, along the longitudinal direction, the drilling is in dislocation arrangement.
Further, the mixing pile or the jet grouting pile construction are to severely-weathered colored rock stratum.
Further, the drilling extends through middle weathered rock formation to micro- weathered rock formation downward, and the drilling is towards downward
The range extended in micro- weathered rock formation is greater than 0.5m.
Further, the mini-valve tube is using jump hole mortar depositing construction.
Compared with prior art, the water-stop curtain that mixing pile or rotary churning pile provided by the invention are combined with sleeve valve barrel grouting is applied
Work method first completes the construction of mixing pile or rotary churning pile, after 1-2 days, then carries out sleeve valve barrel grouting on mixing pile or rotary churning pile
Construction, overlapped that range is greater than 4m for the slip casting of mixing pile or rotary churning pile and mini-valve tube；In this way, the sleeve shell material in overlap joint range
It is tightly combined with stirring stake body or whirl spraying stake body, and compared with soil, mixing pile or rotary churning pile intensity with higher, densification
Property and uniformity spread mini-valve tube slurries can only toward horizontal direction to be sealed to the upper end in sleeve valve barrel grouting hole,
It will not ensure that grouting quality to earth's surface grout and reduce waste of material, it is environmentally protective；Also, mixing pile or rotary churning pile with
The stratum strong applicability of sleeve valve barrel grouting combination is suitable for forming water-stop curtain on various stratum and various depth, meanwhile, it is reachable
To preferable water-stagnating effect.
Detailed description of the invention
Fig. 1 is the water-stop curtain construction party that mixing pile or rotary churning pile provided in an embodiment of the present invention are combined with sleeve valve barrel grouting
The construction floor map of method；
Fig. 2 is the water-stop curtain construction party that mixing pile or rotary churning pile provided in an embodiment of the present invention are combined with sleeve valve barrel grouting
The mixing pile or rotary churning pile of method are in the floor map of single shape arrangement；
Fig. 3 is the water-stop curtain construction party that mixing pile or rotary churning pile provided in an embodiment of the present invention are combined with sleeve valve barrel grouting
The mixing pile or rotary churning pile of method are in the floor map schematic diagram of double shape arrangement；
Fig. 4 is the water-stop curtain construction party that mixing pile or rotary churning pile provided in an embodiment of the present invention are combined with sleeve valve barrel grouting
The mixing pile or rotary churning pile of method are in the floor map schematic diagram of three row patterns arrangement.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In description of the invention
In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" for based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore describe the use of positional relationship in attached drawing
Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term is understood as the case may be.
Realization of the invention is described in detail below in conjunction with specific embodiment.
Referring to Fig.1 shown in -4, preferred embodiment is provided for the present invention.
The waterproof curtain construction method that mixing pile 10 or rotary churning pile 10 provided by the invention are combined with sleeve valve barrel grouting, is used for
Solve the problems, such as that the water-stagnating effect of water-stop curtain is bad.
The waterproof curtain construction method that mixing pile 10 or rotary churning pile 10 are combined with sleeve valve barrel grouting, comprising the following steps:
(1) construction of multiple mixing piles 10 or multiple rotary churning piles 10 is completed in soil layer；
(2) stake 10 to be mixed or after 10 final set of rotary churning pile 1-2 days, creeps into shape on mixing pile 10 or rotary churning pile 10 with drilling machine
At drilling 20；Drilling 20 extends to micro- weathered rock formation downward；
(3) sleeve shell material is perfused in drilling 20, and transfers mini-valve tube, and slip casting, stirring are carried out to the soil body by mini-valve tube
Overlapped that range is greater than 4m for stake 10 or the slip casting of rotary churning pile 10 and mini-valve tube.
(4) mixing pile 10 or rotary churning pile 10 in a row-shaped, each mixing pile 10 or each rotation are formed according to step (1) construction
Stake 10 is sprayed each other in overlap joint arrangement.
The waterproof curtain construction method that above-mentioned mixing pile 10 or rotary churning pile 10 is combined with sleeve valve barrel grouting first completes stirring
Stake 10 or rotary churning pile 10 construction, after 1-2 days, then on mixing pile 10 or rotary churning pile 10 progress sleeve valve barrel grouting construction, stir
Mixing the slip casting of stake 10 or rotary churning pile 10 and mini-valve tube, overlapped that range is greater than 4m；In this way, overlapping the sleeve shell material in range and stirring
It mixes 10 pile body of stake or 10 pile body of rotary churning pile is tightly combined, and compared with soil, mixing pile 10 or the intensity with higher of rotary churning pile 10,
Compactness and uniformity make mini-valve tube slurries 30 can only be toward level side to be sealed to the upper end in sleeve valve barrel grouting hole
To diffusion, it will not ensure that grouting quality to earth's surface grout and reduce waste of material, it is environmentally protective；Also, mixing pile 10 or
The stratum strong applicability that rotary churning pile 10 is combined with sleeve valve barrel grouting is suitable for forming sealing curtain on various stratum and various depth
Curtain, meanwhile, it can reach preferable water-stagnating effect.
In the present embodiment, multiple mixing piles 10 or multiple rotary churning piles 10 can be arranged for single shape, each mixing pile 10 or each
The overlap joint range 40 of a rotary churning pile 10 between any two is 150mm-400mm；In this way, enhancing mixing pile 10 or rotary churning pile 10 it is strong
Degree, meanwhile, the water-stagnating effect of curtain is more preferably.
Multiple mixing piles 10 or multiple rotary churning piles 10 can be arranged for double shape；Along the longitudinal direction, two rows of mixing piles 10 or rotation
Spray stake 10 is in be arranged in juxtaposition, and the overlap joint range 40 of two mixing piles 10 or two rotary churning piles 10 between any two is 150mm-
400mm；In transverse direction, the overlap joint range 40 between each mixing pile 10 or each rotary churning pile 10 is 150mm-400mm；
The intensity that each combination of mixing pile 10 forms the whole or each combination of rotary churning pile 10 formation entirety is higher, meanwhile, the curtain of formation
Water-stagnating effect more preferably.
Multiple mixing piles 10 or multiple rotary churning piles 10 can be arranged for three row patterns；Along the longitudinal direction, three row's mixing piles 10 or rotation
Spray stake 10 is sequentially in be arranged in juxtaposition, and the overlap joint range 40 of mixing pile 10 or rotary churning pile 10 between any two is 150mm-400mm；Edge
Transverse direction, the overlap joint range 40 of each mixing pile 10 or each rotary churning pile 10 between any two are 150mm-400mm；Each stirring
The intensity that 10 combination of stake forms the whole or each combination of rotary churning pile 10 formation entirety is higher, meanwhile, the sealing effect of the curtain of formation
Fruit is more preferably.
In transverse direction, the distance between center of two neighboring drilling 20 formed laterally away from, laterally away from range be
1000~2000mm；In this way, there is safe distance, most between the adjacent drilling of transverse direction when mini-valve tube carries out mortar depositing construction
Big degree avoids adjacent drilling 20 from causing grout leaking, influences the water-stagnating effect of curtain；Meanwhile avoiding 20 hypotelorisms of adjacent drilling
Influence the pile quality of mixing pile 10 or rotary churning pile 10.
The mixing pile 10 or rotary churning pile 10 that the mixing pile 10 or rotary churning pile 10 of double arrangement or three arrangements are set, it is square along longitudinal direction
To, the distance between center of two neighboring drilling 20 formed it is longitudinal away from, it is longitudinal away from range be 800~1600mm；In this way, sleeve
When valve pipe carries out mortar depositing construction, does big degree and the adjacent drilling 20 of longitudinal direction is avoided to cause grout leaking, influence water-stop curtain
Water-stagnating effect；Meanwhile avoiding the pile quality of each 20 influence mixing pile 10 of drilling or rotary churning pile 10.
Along the longitudinal direction, drilling 20 is in dislocation arrangement；The mixing pile 10 or rotary churning pile set for double arrangement or three arrangements
10, mixing pile 10 or rotary churning pile 10 are combined with sleeve valve barrel grouting in dislocation arrangement, in this way, the water-stagnating effect of mini-valve tube can be more complete
Face, enhancing forms mixing pile 10 or rotary churning pile 10 combines the water-stagnating effect for the water-stop curtain to be formed with mini-valve tube；Also, it effectively keeps away
When exempting from mini-valve tube progress mortar depositing construction, adjacent drilling 20 along the longitudinal direction causes grout leaking, to guarantee the curtain to be formed
Water-stagnating effect.
Mixing pile 10 or the construction of rotary churning pile 10 are to severely-weathered colored rock stratum, to guarantee the pile of mixing pile 10 or rotary churning pile 10
Intensity guarantees the safety of construction work, meanwhile, guarantee the stability for forming curtain.
Mixing pile 10 or the construction of rotary churning pile 10 guarantee mixing pile 10 or rotary churning pile to entering severely-weathered colored rock stratum range 3-4m
10 intensity guarantees the safety of construction work, meanwhile, guarantee the stability for forming curtain.
Drilling 20 extends through middle weathered rock formation to micro- weathered rock formation downward, and drilling 20 extends to micro- weathered rock formation downward
Interior range is greater than 0.5m；To guarantee the mortar depositing construction of subsequent mini-valve tube, stratum more than micro- weathered rock formation is played in guarantee
Sealing effect guarantees that weak soil, pan soil play waterproof action.
Mini-valve tube is using jump hole mortar depositing construction；When mini-valve tube carries out mortar depositing construction, does big degree and avoid adjacent drilling 20
Grout leaking is caused, the water-stagnating effect of curtain is influenced.
When mini-valve tube carries out mortar depositing construction, slip casting coverage is taken from mixing pile 10 or rotary churning pile 10 and the slip casting of mini-valve tube
The range connect extends to the depth that drilling 20 is drilled into；To guarantee partially to play sealing effect upward to from light weathered granite,
To guarantee water-stagnating effect.
Mixing pile 10 or rotary churning pile 10 are suitable for playing sealing effect to soil layer and soft rock, and are not suitable for playing hard rock
Sealing effect, sleeve valve barrel grouting are suitable for playing hard rock sealing effect, and the two combines and is applicable to various stratum and various depths
The water-stop curtain of degree, plays sealing effect；Also, make to can reach preferable water-stagnating effect in various stratum.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. the waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting, which is characterized in that including following step
It is rapid:
(1) construction of multiple mixing piles or multiple rotary churning piles is completed in soil layer；
(2) behind 1-2 days that the mixing pile or the jet grouting pile construction are completed, with drilling machine in the mixing pile or the whirl spraying
Drilling forms drilling in stake；The drilling extends to micro- weathered rock formation downward；
(3) sleeve shell material is perfused in the drilling, and transfers mini-valve tube, and slip casting is carried out to the soil body by mini-valve tube, it is described to stir
Mixing the slip casting of stake or the rotary churning pile and the mini-valve tube, overlapped that range is greater than 4m；
(4) mixing pile or the rotary churning pile in a row-shaped, each mixing pile or each are formed according to step (1) construction
The rotary churning pile is in overlap joint arrangement each other.
2. the waterproof curtain construction method that mixing pile as described in claim 1 or rotary churning pile are combined with sleeve valve barrel grouting, special
Sign is that multiple mixing piles or multiple rotary churning piles can be arranged for single shape, each mixing pile or each described
Overlap joint range between rotary churning pile is 150mm-400mm.
3. the waterproof curtain construction method that mixing pile as described in claim 1 or rotary churning pile are combined with sleeve valve barrel grouting, special
Sign is that multiple mixing piles or multiple rotary churning piles can be arranged for double shape；Along the longitudinal direction, two rows of mixing piles
Or the rotary churning pile is in be arranged in juxtaposition, and the overlap joint range between two mixing piles or two rotary churning piles is
150mm-400mm；In transverse direction, the overlap joint range of each mixing pile or each rotary churning pile between any two is
150mm-400mm。
4. the waterproof curtain construction method that mixing pile as described in claim 1 or rotary churning pile are combined with sleeve valve barrel grouting, special
Sign is that multiple mixing piles or multiple rotary churning piles can be arranged for three row patterns；Along the longitudinal direction, mixing pile described in three rows
Or the rotary churning pile is sequentially in be arranged in juxtaposition, and the overlap joint range of the mixing pile or the rotary churning pile between any two is 150mm-
400mm；In transverse direction, the overlap joint range of each mixing pile or each rotary churning pile between any two is 150mm-
400mm。
5. the water-stop curtain construction that the mixing pile or rotary churning pile as described in claim 1-4 any one are combined with sleeve valve barrel grouting
Method, which is characterized in that in transverse direction, the distance between center of the two neighboring drilling is formed laterally away from the cross
To away from range be 1000~2000mm.
6. the water-stop curtain construction that the mixing pile or rotary churning pile as described in claim 1-4 any one are combined with sleeve valve barrel grouting
Method, which is characterized in that along the longitudinal direction, the distance between center of the two neighboring drilling forms longitudinal away from described vertical
To away from range be 800~1600mm.
7. the water-stop curtain construction that the mixing pile or rotary churning pile as described in claim 1-4 any one are combined with sleeve valve barrel grouting
Method, which is characterized in that along the longitudinal direction, the drilling is in dislocation arrangement.
8. the water-stop curtain construction that the mixing pile or rotary churning pile as described in claim 1-4 any one are combined with sleeve valve barrel grouting
Method, which is characterized in that the mixing pile or the jet grouting pile construction to severely-weathered colored rock stratum.
9. the water-stop curtain construction that the mixing pile or rotary churning pile as described in claim 1-4 any one are combined with sleeve valve barrel grouting
Method, which is characterized in that the drilling extends through middle weathered rock formation to micro- weathered rock formation downward, and the drilling extends downward
Range in micro- weathered rock formation is greater than 0.5m.
10. the water-stop curtain that the mixing pile or rotary churning pile as described in claim 1-4 any one are combined with sleeve valve barrel grouting is applied
Work method, which is characterized in that the mini-valve tube is using jump hole mortar depositing construction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309316.3A CN109252531A (en) | 2018-11-05 | 2018-11-05 | The waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309316.3A CN109252531A (en) | 2018-11-05 | 2018-11-05 | The waterproof curtain construction method that mixing pile or rotary churning pile are combined with sleeve valve barrel grouting |
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| CN109252531A true CN109252531A (en) | 2019-01-22 |
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| CN109826635A (en) * | 2019-03-08 | 2019-05-31 | 中铁十二局集团有限公司 | Reinforce the construction method for the shield reception space periphery soil body that subsurface excavation method applies |
| CN113653043A (en) * | 2021-09-06 | 2021-11-16 | 深圳市勘察测绘院(集团)有限公司 | Rotary jet grouting pile and curtain construction method for composite water stop in pit |
| CN114439028A (en) * | 2021-12-27 | 2022-05-06 | 紫金矿业建设有限公司 | Water stop construction method suitable for collapsible soil |
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| CN113653043A (en) * | 2021-09-06 | 2021-11-16 | 深圳市勘察测绘院(集团)有限公司 | Rotary jet grouting pile and curtain construction method for composite water stop in pit |
| CN114439028A (en) * | 2021-12-27 | 2022-05-06 | 紫金矿业建设有限公司 | Water stop construction method suitable for collapsible soil |
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Application publication date: 20190122 |