CN107905218A - A kind of karst cave treatment method in the construction applied to Pile In Drill In Karst Terrain - Google Patents
A kind of karst cave treatment method in the construction applied to Pile In Drill In Karst Terrain Download PDFInfo
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- CN107905218A CN107905218A CN201711217307.7A CN201711217307A CN107905218A CN 107905218 A CN107905218 A CN 107905218A CN 201711217307 A CN201711217307 A CN 201711217307A CN 107905218 A CN107905218 A CN 107905218A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to the different size and the karst cave treatment method of type in a kind of construction applied to Pile In Drill In Karst Terrain.First using the cavern depth at Advance Drilling technical limit spacing stake position and solution cavity height；Solution cavity is filled without filling solution cavity and half more than 3m for hole is high, is handled using the method for concrete perfusion；Solution cavity is filled without filling solution cavity and half between 3m in 1.5m for hole height, is handled using the method for perfusion mortar；Solution cavity is filled in 1m to half between 1.5m without filling solution cavity and hole height between 1.5m in 0.5m for hole height, is handled using the method for floral tube slip casting；For the high half filling solution cavity and full packing solution cavity that are less than 1m without filling solution cavity, hole height less than 0.5m in hole, handled using the method for sleeve valve barrel grouting.The present invention preferably can be handled different types of solution cavity.
Description
Technical field
The present invention relates to the Treatment technology of karst cave field in cast-in-situ bored pile, it particularly relates to which a kind of be applied to karst
The karst cave treatment method of different size and type in regional bored pile construction.
Background technology
When constructing to karst area, the prior art is frequently with meeting the mode crept into again of solution cavity fill concrete (such as
Chinese patent 201410376534.4), this consumption of method concrete and waste are serious, and concrete initial set and drilling time are difficult
Hold, if concrete strength creeps into difficulty after rising.
Cast-in-situ bored pile is current using more extensive pile foundation type, its mechanization degree is high, and single pile bearing is big, pile body
Rigidity is strong.When constructing in karst area, stake holes, which usually may require that, passes through solution cavity, easily caused in pore forming process spillage, necking down and
Collapse hole, in concrete perfusion, substantial amounts of concrete can pour in from the junction of stake holes and solution cavity and fill solution cavity, cause coagulation
The superfilled amount of soil is big, fullness coefficient is high, therefore it is higher to result in project cost.In the prior art, usually all it is to use single throwing
Embankment method goes to handle different types of solution cavity, but in fact, since solution cavity geological condition is complicated, traditional method is to different type
Karst cave treatment effect also differ widely.This patent takes different processing sides particular for the solution cavity of different size and type
Method, so as to reach reliable, economically and reasonably optimization process effect.
The content of the invention
The technical problems to be solved by the invention are to provide that a kind of construction material is simple, construction technology is ripe, and construction is just
Prompt, the karst cave treatment method of economical rationality.
Technical scheme can be realized by following technical measures：
A kind of karst cave treatment method in construction applied to Pile In Drill In Karst Terrain, including following process：
The cavern depth and solution cavity height at stake position are obtained, and according to obtained solution cavity height value, is selected in accordance with the following methods
Select processing mode：
(1) solution cavity is filled without filling solution cavity and half more than 3m for hole is high, using grouting pipe concrete perfusion
Method is handled；
(2) solution cavity is filled without filling solution cavity and half between 3m in 1.5m for hole height, sand is irrigated using grouting pipe
The method of slurry is handled；
(3) for hole height in 0.5m to molten to half filling between 1.5m in 1m without filling solution cavity and hole height between 1.5m
Hole, is handled using the method for floral tube grout injection；
(4) solution cavity and full packing solution cavity are filled without half of filling solution cavity, hole height less than 1m less than 0.5m for hole height,
Handled using the method for mini-valve tube grout injection.
Preferably, using the cavern depth at Advance Drilling technical limit spacing stake position and solution cavity height.
Preferably for processing mode (1), following steps are specifically included：
(1-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
The drilling of (1-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(1-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(1-4) installs grouting pipe, and grouting pipe is installed in injected hole and is reinforced, and grouting pipe is entered
More than solution cavity hole bottom 0.3~0.5m enters the following 0.3~0.5m in solution cavity hole top, while make it that grouting pipe is above ground level about
0.5m；
(1-5) installs exhaust manifolds, exhaust manifolds is installed in exhausting-gas hole, exhaust manifolds use pvc pipe；
(1-6) mixing concrete, concrete is using the concrete marked as C15；
Concrete, is pumped into solution cavity by (1-7) pump concrete using concrete pump by grouting pipe；
(1-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(1-9) blocks injected hole, extracts grouting pipe and injected hole is blocked.
Preferably for processing mode (2), following steps are specifically included：
(2-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
The drilling of (2-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(2-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(2-4) installs grouting pipe, and grouting pipe is installed in injected hole and is reinforced, and grouting pipe is entered
More than solution cavity hole bottom 0.3~0.5m enters the following 0.3~0.5m in solution cavity hole top, while make it that grouting pipe is above ground level about
0.5m；
(2-5) installs exhaust manifolds, exhaust manifolds is installed in exhausting-gas hole, exhaust manifolds use pvc pipe；
(2-6) mixing mortar, mortar use mortar of the strength grade for M10；
(2-7) pumps mortar, and mortar is pumped into solution cavity by grouting pipe using concrete pump；
(2-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(2-9) blocks injected hole, extracts grouting pipe and injected hole is blocked.
Preferably, in step (2-6), the volume proportion of mortar is cement：Sand：Water=1：4.8：0.8.
Preferably for processing mode (3), following steps are specifically included：
(3-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
The drilling of (3-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(3-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(3-4) makes and installation floral tube, makes floral tube and loads in injected hole；
(3-5) makes and installation exhaust manifolds, makes exhaust manifolds and loads in exhausting-gas hole, exhaust manifolds use pvc pipe；
(3-6) configures injection slurry, and injection slurry uses cement mortar, and cement mortar uses 32.5R Portland cements, and controls
The ratio of mud is 0.8~1.0, concentration is 0.5~0.6；
(3-7) slip casting, slip casting is carried out using grouting pump by floral tube by injection slurry to solution cavity；
(3-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(3-9) blocks injected hole, and injected hole is blocked using mortar.
Preferably for processing mode (4), following steps are specifically included：
(4-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
(4-2) pore-forming, is marked the position of injected hole using the center of solution cavity as basic point, is set afterwards using drilling
It is standby to be drilled with injected hole；
(4-3) pours sleeve shell material, pours sleeve shell material in the slip casting section of injected hole, sleeve shell material uses clay cement grout；
(4-4) installs mini-valve tube, and mini-valve tube is loaded in injected hole；
(4-5) pipe is only starched admittedly, is inserted into solid pipe in the gap location of mini-valve tube and injected hole and is stopped slurry conduit until solution cavity top circle
Position, stops the solid pipe of slurry conduit injection by solid pipe afterwards and stops slurries, Gu it is neat slurry that pipe, which stops slurries,；
(4-6) slip casting, is injected injection slurry in solution cavity by mini-valve tube using grouting pump, and injection slurry uses neat slurry,
Cement uses 32.5R Portland cements, and the ratio of mud is 0.5~0.6；
(4-7) blocks injected hole, and injected hole is blocked using mortar.
Preferably, in step (4-3), the match ratio of sleeve shell material is weight ratio cement：Clay：Water=1：1.50：1.88.
Preferably, in step (4-4), clear water is poured into overcome the floating of sleeve shell material in mini-valve tube when installing mini-valve tube
Power；The slip casting section of mini-valve tube is beyond the top of solution cavity, each 20cm in bottom circle.
Preferably, in step (4-5), Gu it is water that pipe, which stops slurries,：Cement weight ratio=1：1.5 neat slurry.
Preferably, in step (4-6), in the slip casting liquid measure that single hole irrigates more than 20m3When not filling yet, using cement water
Glass dual slurry substitutes injection slurry and is irrigated.
Preferably, cement-silicate dual slurry in the preparation, prepares 1 using 32.5R Portland cements first:1
Cement mortar, then the waterglass for taking Baume degrees to be 30-40 are diluted to 30%, and the volume of cement mortar is accounted for waterglass dilution afterwards
Than being irrigated for 40% ground.
Compared with prior art, the present invention has the advantages that：
1, the method for the present invention carries out advance drilling before relying on drilling, can accurately understand solution cavity depth according to advance drilling data
Degree, size, filling situation, different processing methods is taken for different size and the solution cavity for filling type, and specific aim is stronger, real
Applying method is more specific；
2, the method for the present invention is used for used by karst cave treatment that construction material to be simple, construction technology is ripe, and construction is convenient, warp
Ji is reasonable；
3, the method for the present invention be before bored pile construction carry out solution cavity filling pretreatment, by using injection slurries,
The materials such as mortar, concrete are filled solution cavity and solidify integral, easy to creep into and retaining wall, avoid sending out in work progress
Phenomena such as raw spillage, landslide, greatly reduce difficulty of construction, reduce throwing quantities, avoid the super side of concrete, save
Duration, be conducive to pore-forming and pile quality control；
4, definitely sum is not unique for several processing methods and flow referred in patent of the present invention, in different engineerings and difference
It can be used cooperatively in geological conditions according to specific actual conditions, strengthen its treatment effect with comprehensive, reach karst cave treatment can
Lean on, the purpose of economical rationality.
Brief description of the drawings
Using attached drawing, the invention will be further described, but the embodiment in attached drawing does not form any limit to the present invention
System.
Fig. 1 is the flow chart for the karst cave treatment method that the present invention is applied in Pile In Drill In Karst Terrain construction.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.It should be understood that
, embodiment be only the present invention is explained and and it is non-limiting.
Embodiment 1
With reference to shown in Fig. 1, present embodiments provide at the solution cavity in a kind of construction applied to Pile In Drill In Karst Terrain
Reason method, it comprises the following steps：
The solution cavity distribution situation at stake position is obtained, it is high using the cavern depth at Advance Drilling technical limit spacing stake position and solution cavity
Degree, and according to obtained solution cavity height value, processing mode is selected in accordance with the following methods：
(1) solution cavity is filled without filling solution cavity and half more than 3m for hole is high, is carried out using the method for concrete perfusion
Processing；
(2) solution cavity is filled without filling solution cavity and half between 3m in 1.5m for hole height, using the method for perfusion mortar
Handled；
(3) for hole height in 0.5m to molten to half filling between 1.5m in 1m without filling solution cavity and hole height between 1.5m
Hole, is handled using the method for floral tube slip casting；
(4) solution cavity and full packing solution cavity are filled without half of filling solution cavity, hole height less than 1m less than 0.5m for hole height,
Handled using the method for sleeve valve barrel grouting.
In the present embodiment, the method for concrete perfusion is further comprising the steps of in processing mode (1)：
(1-1) surveying setting-out, measures the center of solution cavity according to the conclusion of step (1) and is marked；
The drilling of (1-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(1-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(1-4) installs grouting pipe, and grouting pipe is installed in injected hole and is reinforced, and grouting pipe is entered
More than solution cavity hole bottom 0.3~0.5m enters the following 0.3~0.5m in solution cavity hole top, while make it that grouting pipe is above ground level about
0.5m；
(1-5) installs exhaust manifolds, exhaust manifolds is installed in exhausting-gas hole, exhaust manifolds use pvc pipe；
(1-6) mixing concrete, concrete is using the concrete marked as C15；
Concrete, is pumped into solution cavity by (1-7) pump concrete using concrete pump by grouting pipe；
(1-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(1-9) blocks injected hole, extracts grouting pipe and injected hole is blocked.
In the present embodiment, the method for perfusion mortar is further comprising the steps of in processing mode (2),
(2-1) surveying setting-out, measures the center of solution cavity according to the conclusion of step (1) and is marked；
The drilling of (2-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(2-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(2-4) installs grouting pipe, and grouting pipe is installed in injected hole and is reinforced, and grouting pipe is entered
More than solution cavity hole bottom 0.3~0.5m enters the following 0.3~0.5m in solution cavity hole top, while make it that grouting pipe is above ground level about
0.5m；
(2-5) installs exhaust manifolds, exhaust manifolds is installed in exhausting-gas hole, exhaust manifolds use pvc pipe；
(2-6) mixing mortar, mortar use mortar of the strength grade for M10；
(2-7) pumps mortar, and mortar is pumped into solution cavity by grouting pipe using concrete pump；
(2-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(2-9) blocks injected hole, extracts grouting pipe and injected hole is blocked.
Wherein, in step (2-6), the volume proportion of mortar is cement：Sand：Water=1：4.8：0.8.
It is further comprising the steps of using the method for floral tube slip casting in processing mode (3) in the present embodiment,
(3-1) surveying setting-out, measures the center of solution cavity according to the conclusion of step (1) and is marked；
The drilling of (3-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(3-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(3-4) makes and installation floral tube, makes floral tube and loads in injected hole；
(3-5) makes and installation exhaust manifolds, makes exhaust manifolds and loads in exhausting-gas hole, exhaust manifolds use pvc pipe；
(3-6) configures injection slurry, and injection slurry uses cement mortar, and cement mortar uses 32.5R Portland cements, and controls
The ratio of mud is 0.8~1.0, concentration is 0.5~0.6；
(3-7) slip casting, slip casting is carried out using grouting pump by floral tube by injection slurry to solution cavity；
(3-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(3-9) blocks injected hole, and injected hole is blocked using mortar.
Wherein, in step (3-7), in the slip casting liquid measure that single hole irrigates more than 20m3When not filling yet, using cement water glass
Glass dual slurry substitutes injection slurry and is irrigated.For cement-silicate dual slurry in configuration, cement uses 32.5R normal silicate water
Mud, the Baume degrees of waterglass is 30~40.
It is further comprising the steps of using the method for sleeve valve barrel grouting in processing mode (4) in the present embodiment,
(4-1) surveying setting-out, measures the center of solution cavity according to the conclusion of step (1) and is marked；
(4-2) pore-forming, is marked the position of injected hole using the center of solution cavity as basic point, is set afterwards using drilling
It is standby to be drilled with injected hole；
(4-3) pours sleeve shell material, pours sleeve shell material in the slip casting section of injected hole, sleeve shell material uses clay cement grout；
(4-4) installs mini-valve tube, and mini-valve tube is loaded in injected hole；
(4-5) pipe is only starched admittedly, is inserted into solid pipe in the gap location of mini-valve tube and injected hole and is stopped slurry conduit until solution cavity top circle
Position, stops the solid pipe of slurry conduit injection by solid pipe afterwards and stops slurries, Gu it is neat slurry that pipe, which stops slurries,；
(4-6) slip casting, is injected injection slurry in solution cavity by mini-valve tube using grouting pump, injection slurry uses cement mortar；
(4-7) blocks injected hole, and injected hole is blocked using mortar.
In step (4-3), the match ratio of sleeve shell material is cement：Clay：Water=1：1.50：1.88 (weight ratios), it is measured
94kg water is added in agitator tank, adds 75kg clays (weighing), and it is equal that one bag of cement (50kg) stirring is added after strong stirring
It is even.
In step (4-4), due to the presence of sleeve shell material, for the ease of the down tube of mini-valve tube, tucking inside the sleeve when installing mini-valve tube
Clear water is poured into valve pipe to overcome the buoyancy of sleeve shell material；To ensure preferable slip casting effect so that the slip casting Duan Chao of mini-valve tube
Go out top, each 20cm in bottom circle of solution cavity.
In step (4-5), Gu it is water that pipe, which stops slurries,：Cement=1：The neat slurry of 1.5 (weight ratios), in filling process
In, the multiple recharge after pulp surface sinking, preferably consolidates pipe effect to guarantee to reach.
In step (4-6), in the slip casting liquid measure that single hole irrigates more than 20m3When not filling yet, using cement-silicate biliquid
Slurry substitutes injection slurry and is irrigated.Injection slurry uses neat slurry, and cement uses 32.5R Portland cements, and the ratio of mud is
0.5~0.6.Cement-silicate dual slurry in the preparation, prepares 1 using 32.5R Portland cements first:1 cement mortar,
The waterglass for taking Baume degrees to be 30-40 again is diluted to 30%, afterwards using waterglass dilution to the volume accounting of cement mortar as
40% ground is irrigated.
In the present embodiment, the quantity of injected hole can be 1 or 2, and when the quantity of injected hole is 1, injected hole is located at
The center position of Pile position；When the quantity of injected hole is 2,2 injected holes are relative to cast-in-situ bored pile
The center of stake position is arranged with being centrosymmetric.Designed by this kind so that can be preferably to molten at the region of stake position during slip casting
Hole is handled, so as to the settling amount for preferably lifting the intensity of ground at stake position, reducing ground at stake position, and then can
It may be preferable to ensure that the stability of ground at stake position, ensure the safe and smooth construction of bored concrete pile.
In the present embodiment, exhausting-gas hole at solution cavity position split 2 every 20cm, so as to effectively ensure at solution cavity
Reason is smoothed out.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, those of ordinary skill in the art should
Understand, can be to technical scheme technical scheme is modified or replaced equivalently, without departing from the essence of technical solution of the present invention
And scope.
Claims (10)
1. a kind of karst cave treatment method in construction applied to Pile In Drill In Karst Terrain, it is characterised in that including following mistake
Journey：
Obtain the cavern depth and solution cavity height at stake position, and according to obtained solution cavity height value, in accordance with the following methods at selection
Reason mode：
(1) solution cavity is filled without filling solution cavity and half more than 3m for hole is high, using the method for grouting pipe concrete perfusion
Handled；
(2) solution cavity is filled without filling solution cavity and half between 3m in 1.5m for hole height, using grouting pipe perfusion mortar
Method is handled；
(3) solution cavity is filled in 1m to half between 1.5m without filling solution cavity and hole height between 1.5m in 0.5m for hole height, adopted
Handled with the method for floral tube grout injection；
(4) for the high half filling solution cavity and full packing solution cavity that are less than 1m without filling solution cavity, hole height less than 0.5m in hole, use
The method of mini-valve tube grout injection is handled.
2. the karst cave treatment method in the construction according to claim 1 applied to Pile In Drill In Karst Terrain, its feature
It is, using the cavern depth at Advance Drilling technical limit spacing stake position and solution cavity height.
3. the karst cave treatment method in the construction according to claim 1 applied to Pile In Drill In Karst Terrain, its feature
It is, for processing mode (1), specifically includes following steps：
(1-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
The drilling of (1-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(1-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(1-4) installs grouting pipe, and grouting pipe is installed in injected hole and is reinforced, and causes grouting pipe to enter solution cavity
More than hole bottom 0.3~0.5m enters the following 0.3~0.5m in solution cavity hole top, while causes grouting pipe about 0.5m above ground level；
(1-5) installs exhaust manifolds, exhaust manifolds is installed in exhausting-gas hole, exhaust manifolds use pvc pipe；
(1-6) mixing concrete；
Concrete, is pumped into solution cavity by (1-7) pump concrete using concrete pump by grouting pipe；
(1-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(1-9) blocks injected hole, extracts grouting pipe and injected hole is blocked.
4. the karst cave treatment method in the construction according to claim 1 applied to Pile In Drill In Karst Terrain, its feature
It is, for processing mode (2), specifically includes following steps：
(2-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
The drilling of (2-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(2-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(2-4) installs grouting pipe, and grouting pipe is installed in injected hole and is reinforced, and causes grouting pipe to enter solution cavity
More than hole bottom 0.3~0.5m enters the following 0.3~0.5m in solution cavity hole top, while causes grouting pipe about 0.5m above ground level；
(2-5) installs exhaust manifolds, exhaust manifolds is installed in exhausting-gas hole, exhaust manifolds use pvc pipe；
(2-6) mixing mortar, mortar use mortar of the strength grade for M10；
(2-7) pumps mortar, and mortar is pumped into solution cavity by grouting pipe using concrete pump；
(2-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(2-9) blocks injected hole, extracts grouting pipe and injected hole is blocked.
5. the karst cave treatment method in the construction according to claim 4 applied to Pile In Drill In Karst Terrain, its feature
It is, in step (2-6), the volume proportion of mortar is cement：Sand：Water=1：4.8：0.8.
6. the karst cave treatment method in the construction according to claim 1 applied to Pile In Drill In Karst Terrain, its feature
It is, for processing mode (3), specifically includes following steps：
(3-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
The drilling of (3-2) arrangement, is marked the position of injected hole and exhausting-gas hole；
(3-3) drills, and injected hole and exhausting-gas hole are drilled with using drilling device；
(3-4) makes and installation floral tube, makes floral tube and loads in injected hole；
(3-5) makes and installation exhaust manifolds, makes exhaust manifolds and loads in exhausting-gas hole, exhaust manifolds use pvc pipe；
(3-6) configures injection slurry, and injection slurry uses cement mortar, and cement mortar uses 32.5R Portland cements, and controls water grey
Than being 0.5~0.6 for 0.8~1.0, concentration；
(3-7) slip casting, slip casting is carried out using grouting pump by floral tube by injection slurry to solution cavity；
(3-8) mends slurry, and neat slurry is injected into solution cavity by exhaust manifolds using floral tube；
(3-9) blocks injected hole, and injected hole is blocked using mortar.
7. the karst cave treatment method in the construction according to claim 1 applied to Pile In Drill In Karst Terrain, its feature
It is, for processing mode (4), specifically includes following steps：
(4-1) surveying setting-out, measures the center of solution cavity according to the conclusion of Advance Drilling and is marked；
(4-2) pore-forming, is marked the position of injected hole using the center of solution cavity as basic point, is bored afterwards using drilling device
If injected hole；
(4-3) pours sleeve shell material, and sleeve shell material is poured in the slip casting section of injected hole, and sleeve shell material uses clay cement grout, in sleeve shell material
Cement：Clay：Water weight ratio=1：1.50：1.88；
(4-4) installs mini-valve tube, and mini-valve tube is loaded in injected hole；
(4-5) pipe is only starched admittedly, is inserted into solid pipe in the gap location of mini-valve tube and injected hole and is stopped slurry conduit until solution cavity top circle position,
The solid pipe of slurry conduit injection is stopped by solid pipe afterwards and stops slurries, Gu it is water that pipe, which stops slurries,：Cement weight ratio=1：1.5 striaght cement
Slurry；
(4-6) slip casting, is injected injection slurry in solution cavity by mini-valve tube using grouting pump, injection slurry uses neat slurry, cement
Using 32.5R Portland cements, the ratio of mud is 0.5~0.6；
(4-7) blocks injected hole, and injected hole is blocked using mortar.
8. the karst cave treatment method in the construction according to claim 7 applied to Pile In Drill In Karst Terrain, its feature
It is, in step (4-4), clear water is poured into mini-valve tube to overcome the buoyancy of sleeve shell material when installing mini-valve tube；Mini-valve tube
Slip casting section beyond the top of solution cavity, each 20cm in bottom circle.
9. the karst cave treatment method in the construction according to claim 7 applied to Pile In Drill In Karst Terrain, its feature
It is, in step (4-6), in the slip casting liquid measure that single hole irrigates more than 20m3When not filling yet, using cement-silicate dual slurry
Injection slurry is substituted to be irrigated.
10. the karst cave treatment method in the construction according to claim 9 applied to Pile In Drill In Karst Terrain, its feature
It is, cement-silicate dual slurry in the preparation, prepares 1 using 32.5R Portland cements first:1 cement mortar, then take
Baume degrees be 30-40 waterglass be diluted to 30%, afterwards using waterglass dilution to the volume accounting of cement mortar as 40% ground
It is irrigated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711217307.7A CN107905218A (en) | 2017-11-28 | 2017-11-28 | A kind of karst cave treatment method in the construction applied to Pile In Drill In Karst Terrain |
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| CN108585692A (en) * | 2018-06-20 | 2018-09-28 | 广州地铁设计研究院有限公司 | It is a kind of to fill molten, soil cave injecting paste material and grout filling construction method suitable for karst region |
| CN108677956A (en) * | 2018-06-04 | 2018-10-19 | 山东农业大学 | Covered karst development area rock and soil layer contact surface grouting method |
| CN108999181A (en) * | 2018-08-15 | 2018-12-14 | 广州地铁设计研究院有限公司 | Molten, soil cave injecting treatment construction method and its application |
| CN109356171A (en) * | 2018-11-28 | 2019-02-19 | 中国十七冶集团有限公司 | A kind of device and its operating method blocking solution cavity using rubber bag |
| CN109577313A (en) * | 2018-12-11 | 2019-04-05 | 宝钢集团新疆八钢铁有限公司 | A kind of cold region factory built-up areas grouting and reinforcing technology |
| CN109653197A (en) * | 2019-01-10 | 2019-04-19 | 湖北工业大学 | It is a kind of can the three-dimensional pile base construction method expanded |
| CN109750662A (en) * | 2019-01-10 | 2019-05-14 | 湖北工业大学 | A kind of method for constructing foundation pile passing through solution cavity section |
| CN110230309A (en) * | 2019-01-24 | 2019-09-13 | 中建新疆建工土木工程有限公司 | Karst region bridge solution cavity pile base construction method |
| CN111254933A (en) * | 2020-01-20 | 2020-06-09 | 武汉正洪岩土工程有限公司 | Karst grouting construction method for sleeve valve pipe |
| CN111395346A (en) * | 2020-03-19 | 2020-07-10 | 广州市建筑科学研究院有限公司 | Construction method for pouring concrete into karst cave |
| CN111485544A (en) * | 2020-05-27 | 2020-08-04 | 中交路桥建设有限公司 | Disposal detection structure and method for karst cave under rock-socketed pile base |
| CN112302014A (en) * | 2020-10-26 | 2021-02-02 | 中建四局第一建筑工程有限公司 | Construction method for reinforcing H-shaped steel bottom karst cave of pile in SMW construction method |
| CN114278312A (en) * | 2021-12-31 | 2022-04-05 | 中铁五局集团有限公司 | Karst treatment construction method for river channel area in subway tunnel shield construction |
| CN115419047A (en) * | 2022-09-13 | 2022-12-02 | 中铁二十局集团南方工程有限公司 | Karst cave grouting process |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677956A (en) * | 2018-06-04 | 2018-10-19 | 山东农业大学 | Covered karst development area rock and soil layer contact surface grouting method |
| CN108585692A (en) * | 2018-06-20 | 2018-09-28 | 广州地铁设计研究院有限公司 | It is a kind of to fill molten, soil cave injecting paste material and grout filling construction method suitable for karst region |
| CN108999181A (en) * | 2018-08-15 | 2018-12-14 | 广州地铁设计研究院有限公司 | Molten, soil cave injecting treatment construction method and its application |
| CN109356171A (en) * | 2018-11-28 | 2019-02-19 | 中国十七冶集团有限公司 | A kind of device and its operating method blocking solution cavity using rubber bag |
| CN109577313A (en) * | 2018-12-11 | 2019-04-05 | 宝钢集团新疆八钢铁有限公司 | A kind of cold region factory built-up areas grouting and reinforcing technology |
| CN109653197A (en) * | 2019-01-10 | 2019-04-19 | 湖北工业大学 | It is a kind of can the three-dimensional pile base construction method expanded |
| CN109750662A (en) * | 2019-01-10 | 2019-05-14 | 湖北工业大学 | A kind of method for constructing foundation pile passing through solution cavity section |
| CN110230309B (en) * | 2019-01-24 | 2021-07-16 | 中建新疆建工土木工程有限公司 | Karst area bridge karst cave pile foundation construction method |
| CN110230309A (en) * | 2019-01-24 | 2019-09-13 | 中建新疆建工土木工程有限公司 | Karst region bridge solution cavity pile base construction method |
| CN111254933A (en) * | 2020-01-20 | 2020-06-09 | 武汉正洪岩土工程有限公司 | Karst grouting construction method for sleeve valve pipe |
| CN111254933B (en) * | 2020-01-20 | 2021-05-28 | 武汉正洪岩土工程有限公司 | Karst grouting construction method for sleeve valve pipe |
| CN111395346A (en) * | 2020-03-19 | 2020-07-10 | 广州市建筑科学研究院有限公司 | Construction method for pouring concrete into karst cave |
| CN111485544A (en) * | 2020-05-27 | 2020-08-04 | 中交路桥建设有限公司 | Disposal detection structure and method for karst cave under rock-socketed pile base |
| CN112302014A (en) * | 2020-10-26 | 2021-02-02 | 中建四局第一建筑工程有限公司 | Construction method for reinforcing H-shaped steel bottom karst cave of pile in SMW construction method |
| CN114278312A (en) * | 2021-12-31 | 2022-04-05 | 中铁五局集团有限公司 | Karst treatment construction method for river channel area in subway tunnel shield construction |
| CN114278312B (en) * | 2021-12-31 | 2023-10-17 | 中铁五局集团有限公司 | Karst treatment construction method for river channel region in subway tunnel shield construction |
| CN115419047A (en) * | 2022-09-13 | 2022-12-02 | 中铁二十局集团南方工程有限公司 | Karst cave grouting process |
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