CN209129532U - The constructing device of underground anti-seepage curtain - Google Patents
The constructing device of underground anti-seepage curtain Download PDFInfo
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- CN209129532U CN209129532U CN201822000701.1U CN201822000701U CN209129532U CN 209129532 U CN209129532 U CN 209129532U CN 201822000701 U CN201822000701 U CN 201822000701U CN 209129532 U CN209129532 U CN 209129532U
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- saw
- wall
- sawtooth
- drilling rod
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Abstract
The constructing device of underground anti-seepage curtain.Slot section and slip casting or mixing pile are mutually lapped that the poor continuity to form wall, antiseepage be not stringent, and pile body mutually overlapped complicated technology and part overlap the repetition and waste of material of body of a pile.The utility model composition includes: saw drilling machine and saw drilling rod (17), kelly (6) lower part on the saw drilling machine is connect with the saw drill rod thread, described is the circumferential cylindrical structure for being equidistantly equipped with one group of sawtooth (18) in outer surface according to drilling rod, backpitch setting that the sawtooth is counterclockwise, spacing between sawtooth described in neighbouring two is 5-15cm, and the angle between the sawtooth and horizontal plane is 30 °.The utility model is used for the constructing device of underground anti-seepage curtain.
Description
Technical field:
The utility model relates to a kind of constructing devices of underground anti-seepage curtain, belong to reservoir dam and prevent that blending underground engineering applies
Seepage action of ground water field is prevented in work.
Background technique:
Currently, seepage proof curtain is the antiseepage curtain wall formed by whirl spraying, stirring, slip casting mostly.Generally mostly use dual pipe
Method uses twin-channel double Grouting Pipe, while ejecting the injection stream impact failure of high pressure slurries and air two media
The soil body, so that cement slurry and silt particle mixture are formed, as nozzle is rotated and is promoted when injection, cement slurry and surrounding soil
Body forms cylindric induration, forms underground by multiple mutually overlapped pile bodies in this way and intercepts water seepage proof curtain.It is crucial and difficult
Point is the overlap joint between each pile body.
One, concrete cut
Concrete cut begins to use at the beginning of the 50's of 20th century in Italy and France, and subsequent various countries push away in succession
Extensively, meanwhile, China also starts that the technology is studied, tried out and developed.Currently, main antiseepage wall technology has both at home and abroad:
1, water jetting is at wall
Water jetting is to destroy soil layer construction using the impact force of water pump and molding jet stream, and water and soil mixing slime flux goes back to ground, together
Shi Liyong hoist engine manipulates the constantly impulsion up and down of special molding tool, further destroys soil layer, and cutting finishing hole wall is formed with
It after the slot of rule, is poured concrete (or plastic concrete), various flexible mortars are perfused or are laid with anti-seepage geomembrane, shape
At a complete cut-pff wall.
, grab bucket method at wall
Grab bucket method is thin-walled slot to be formed using improved hydraulic grab, and be poured or be laid in the slot that construction is formed
Impervious material, to form one section of complete cut-pff wall.
, groove milling method is at wall
Groove milling method is to be cut stratum and formed slot using a kind of special cutting tool, in the slot that construction is formed
In hole, casting or laying impervious material form one section of cut-pff wall, construct paragraph by paragraph and be linked to be a complete cut-pff wall.
, sheet-pile be perfused wall
The 50's Mos of 20th century, France, Germany etc. develop sheet-pile perfusion cut-pff wall on the basis of steel sheet pile diaphragm wall
Technology forms continuous cut-pff wall by sinking grooving, hoisting grouting using a kind of special special-shaped capstan engine.
, deep-layer stirring engineering method
The technology is cement slurry to be sprayed into the soil body with special single head or multi-drill small-diameter deep-layer mixing pile machine, and stir
At soil cement, continuous cut-pff wall is formed after solidification.
, self-hardening slurry method
Cutoff wall with self-setting mortar is used in the country such as Mexico, the U.S., France, and principle is to cause slot using grooving utensil
With slurry strengthened wall, and various curing agent and a small amount of additive are added in hole, it is agitated uniformly after, self-solidifying form wall.
, SMW method
SMW method is developed by Japan, and principle is to use multiaxis shape drilling blender in engineering site to certain depth soil layer
Drilling is carried out, while ejection cement slurry at drill bit is mixed repeatedly with foundation soil, forms continuous cut-pff wall after solidification.
, high-pressure injection method
High compression injection techniques wash away cutting soil using high pressure spray jetting, gas or slurry medium, destroy by filling earth formation,
So that slurries and soil body particle is admixed and is formed the continuous impervious wall for meeting design direction, depth, thickness and structure feature, reaches strong
Change the effect of ground and antiseepage.
, kerf method
Its grooving mechanism of kerf method is: passing through sandstone for being mixed in mud by the saw blade cutting soil on power head
Pump is discharged outside slot in a manner of reverse circulating.Slotting length of the trench saw is 3.0m, 15 ~ 100 cm of groove width, groove depth
Up to 100m.Kerf method at wall process flow are as follows: guide groove excavate and supporting, be laid with track, slot of spreading and sinking in, drilling machine bore in place guide hole,
The trench saw kerf (after certain length), clear slot, lower slider, downcomer, to slider and isolation channel section casting concrete.
Two, seepage proof curtain
In base pit engineering, seepage proof curtain is beaten frequently with two rows of cement mixing pile protections, and the mutual overlap joint of two campsheds is not preferably small
In 150mm, technique is that two sprays four are stirred.The form being often used has following several:
1) perfusion campshed prop adds two rows of sets to beat cement mixing pile seepage proof curtain, is suitable for foundation pit relatively depth and foundation pit side-wall
It is used when security level is more demanding, curtain should be placed in after campshed.
) soil nailing or prestressed anchor prop add two rows of sets to beat cement mixing pile seepage proof curtain, when shallower suitable for foundation pit
It uses.
) cement mixing pile two rows set packs that insert reinforcing bar, steel pipe or channel steel etc. in pile body whole as support system, and
Setting is at the top of mixing pile with a thickness of 0. 2 m, width and the consistent reinforced concrete soil pressure plate of wall.
Three, diaphram wall
It is intercept water antiseepage, earth-retaining, load-bearing and the continuous wall constructed that underground diaphragm wall method, which is in below ground,.Confrontation is impregnated with
When compared with being strict with, or the deep big foundation pit in soft foundation, frequently with diaphram wall, adaptation of the diaphram wall to soil
Range is very wide, and the ground that can be applied to weak alluvium, medium ground, closely knit sandy gravel stratum and rock is medium.Mainly
Suitable for having intensive groups of building or important underground utilities around foundation pit, surface subsidence around and building settlement are required to need tight
When lattice limit, and reverse construction is used, above and below the ground when synchronous construction, underground continuous wall-enclosure structure is also used as main body
A part of structure.Such as deeper subsurface room, the underground parking, undergrond street, underground railway, underground bin in house in actual life
Library, mine etc. can be applied.
In the construction of diaphram wall, several sections of slots usually are divided on the periphery of proposed underground engineering, in mud off
Supporting under, using pore-creating power auger grooving hole, after slot reaches projected depth, junction block is put at slot both ends, to slot
Hole section carries out concrete perfusion under mud using direct pipe method.Then the brill for successively completing each section of slot paragraph by paragraph is dug and perfusion is mixed
Solidifying soil, it is finally that adjacent wall section connection is integral, a continuous underground wall body is formed, plays to intercept water and prevents blending earth-retaining load-bearing
Effect.
The construction of diaphram wall according to the difference of grooving machinery and grooving mechanism can be roughly divided into grab type, impact type and
Rotary three kinds of grooving modes, there are equipments it is at high cost, construction efficiency is low, undesirable at wall continuity the problems such as；Also it adopts
With cost is relatively low, the higher the trench saw grooving of grooving efficiency and pours diaphram wall.Underground impervious wall need to be partitioned into
Slot, and overlap joint and leakproof, each slot section between emphasis consideration slot section is needed to require mud off, prevent landslip of the sides of the trench from influencing concrete
Pour quality of wall.
The limitation and disadvantage of construction method of underground continuous wall:
(1) for karst area containing the very high sandy gravel stratum of artesian head or very soft clay, if do not used other auxiliary to arrange
It applies, is still difficult at present using underground diaphragm wall method.
If construction site organization and administration are not good at, it is likely to result in live moist and miriness, influences the condition of construction, Er Qieyao
Increase the processing work to discarded slurry.
If construction wrong or soil layer condition are special, it is easy to appear and irregularly backbreaks and landslip of the sides of the trench.
The metope of cast-in-place diaphram wall is usually rougher, if more demanding to metope, the smooth processing of metope increases
Duration and cost.
Interim soil-baffling structure of the diaphram wall as being only used as construction period, just loses its use after the completion of base pit engineering
Value, so when excavation of foundation pit is not deep, then not as good as using other methods economy.
Need to there are a certain number of dedicated construction equipments and the professional construction troop with certain technical level, make this technology
Popularization is subject to certain restrictions.
Under normal conditions, the cost of diaphram wall is higher than cast-in-situ bored pile and deep-mixed pile, therefore, need to be by conscientious
Technical economic analysis after it can just be selected.
Utility model content:
The purpose of the utility model is to provide a kind of site preparation of curtain wall, continuity are good, barrier performance is high, the ground of low cost
The constructing device of lower seepage proof curtain.
Above-mentioned purpose is realized by following technical scheme:
A kind of constructing device of underground anti-seepage curtain, composition includes: to saw drilling machine and saw drilling rod, on the saw drilling machine
Kelly lower part is connect with the saw drill rod thread, and described to be that outer surface is circumferential according to drilling rod be equidistantly equipped with one group of sawtooth
Cylindrical structure, the setting of the sawtooth is counterclockwise backpitch, the spacing between sawtooth described in neighbouring two is 5-
15cm, the angle between the sawtooth and horizontal plane are 30 °.
The constructing device of the underground anti-seepage curtain, the saw drilling rod lower end are equipped with grout outlet and are equipped with drill bit.
The constructing device of the underground anti-seepage curtain, the sawtooth are 3-4 row.
The utility model has the advantages that
1. the utility model provides a kind of novel construction method of underground anti-seepage curtain wall.Design is scientific and reasonable for it, equipment work
Skill is simple, and site preparation, the continuity of curtain wall are good, and depth is big, and seepage capability is strong, is that the wide underground of a kind of low cost, applicability is anti-
Seep curtain new construction method.
The utility model may be implemented to transport back and forth horizontally with kelly along direction of advance according to pumping for drilling rod
It is dynamic, it ensure that continuity, integrality are good, antiseepage effect is strong, have the technique and advantage of kerf method and rotary churning pile and mixing pile concurrently, it is excellent
In the continuity and barrier performance of diaphram wall, and the ground of higher-strength can be formed by insertion steel mesh or plant reinforcing bar
Continuous antiseepage curtain wall down plays the role of certain supporting and earth-retaining.
The antiseepage curtain wall of the utility model be machinery work continuously in situ stir formed curtain wall, continuity is good, wall is deep
Degree is big, it is not necessary to divide slot section or stake holes interval to construct, pause need not be segmented without considering that it is mutually overlapped, in operation process and takes out ground
Lower saw drilling rod and drill bit only need to make wall section mutual tongue and groove in part repeat overlap joint i.e. at the head and the tail of antiseepage curtain wall or construction pause
Can, therefore, it is better than the continuity of diaphram wall and has higher barrier performance；In addition, the engineering method can prevent in advance
The two sides of infiltration curtain wall are spaced apart or close to one or multi-channel antiseepage curtain wall of constructing, can also be according to requirement of engineering, by inserting
Enter steel mesh or plant reinforcing bar improves its intensity and retaining support effect.
The construction method of the utility model is unique and process equipment is uncomplicated, and construction efficiency is higher, without compared with big height sky
Between and construction site, without friction, low noise, operation is continuous, boring mud and mud return to that ground is few, and environmental pollution is small, equipment dismounting,
It migrates light, price advantage is big, and economic benefit is very considerable.
The construction method of the utility model is not only used in highway, railway, municipal administration, subway, underground pipe gallery and depth
The construction of the underground engineering of big foundation pit etc., is also applicable in the anti-seepage reinforcing of river dyke, controls seepage flow and the migration of underground water
Etc. engineerings.It can also be continuously improved and perfect by further testing application, be improved efficiency and quality, gradually expanded it and be applicable in
Range, therefore, application prospect are boundless.
Detailed description of the invention:
Attached drawing 1 is the structural schematic diagram of the utility model saw drilling machine；
Attached drawing 2 is the front view of the utility model saw drilling rod；
Attached drawing 3 is the top view of the utility model saw drilling rod；
In figure: 1, diesel engine and hydraulic pump；2, gearbox；3, power head；4, hoist engine；5, gadder；6, kelly；
7, kelly lifting hydraulic cylinder；8, kelly lifting buckle；9, borer chassis slideway is sawed；10, kelly lifting manipulation
Handle；11, kelly revolving speed control handle；12, kelly rotates clutch；13, saw borer chassis slides back and forth driving
Hydraulic cylinder；14, connector is filled the water；15, transverse concave groove；16, screw thread；17, drilling rod is sawed；18, sawtooth；19, drill bit；20, grout outlet.
Specific embodiment:
Embodiment 1:
A kind of constructing device of underground anti-seepage curtain, composition include: saw drilling machine and saw drilling rod 17, saw its main structure of drilling machine
Become: diesel engine and hydraulic pump 1, gearbox 2, power head 3, hoist engine 4, gadder 5, kelly 6, drilling rod lifting hydraulic cylinder
7, kelly lifting buckle 8, borer chassis slideway 9, kelly go up and down control handle 10, kelly revolving speed control handle
11, kelly rotation clutch 12, saw borer chassis slide back and forth driving hydraulic cylinder 13, and kelly cross sectional shape is positive six
The hollow drill pipe of side shape, the upper end fill the water connector 14 by screwed connection, and kelly outer wall is equipped with laterally recessed at regular intervals
Slot 15, lower end can be connected with screw thread 16 with saw drilling rod 17, and kelly lifting buckle drilling rod lifting hydraulic cylinder is fixed simultaneously
And cover on kelly, kelly lifting clamp buckle in the transverse concave groove of kelly, 6 lower part of kelly with it is described
The connection of saw drill rod thread, described according to drilling rod is the circumferential cylindrical structure for being equidistantly equipped with one group of sawtooth 18 in outer surface, institute
The sawtooth stated is counterclockwise, and backpitch is arranged, and the spacing between sawtooth described in neighbouring two is 5-15cm, the sawtooth
Angle between horizontal plane is 30 °.
Embodiment 2:
According to the constructing device of underground anti-seepage curtain described in embodiment 1, the saw drilling rod lower end is equipped with grout outlet 20
And drill bit 19 is installed.
Embodiment 3:
According to the constructing device of underground anti-seepage curtain described in embodiment 1, the sawtooth is 3-4 row.
Embodiment 4:
A kind of construction method of the constructing device of underground anti-seepage curtain described in embodiment 1-3, construction equipment is mainly by sawing
The composition such as drilling machine, saw drilling rod and matched conventional mud pump and common construction attaching material, by slush pump by cement slurry
Equal antiseepages cementing material is pumped in saw drilling rod, and diesel engine drives kelly rotation by the power head of saw drilling machine, is actively bored
Bar drives saw drilling rod to rotate with the speed of 10-30r/min, actively bores by the way that drilling rod lifting hydraulic cylinder and drilling rod lifting zipper tape are dynamic
The related saw drilling rod of bar pumps, and borer chassis slideway 9 and chassis slide back and forth the driving saw drilling machine of driving hydraulic cylinder 13, band
Dynamic kelly is along direction of advance horizontal reciprocating movement or swing, and the antiseepages such as cement slurry cementing material is using saw drilling rod lower end
Slurry outlet is pressed into slot bottom, then flows through each soil layer back to ground, and when construction, saw drilling machine drives saw drilling rod rotation and up and down
Movement by sawtooth sawing on drilling rod and rotary-cut slot sidewall formation, while making soil layer and the antiseepages material such as the cement slurry that flows through
Expect that abundant original place stirs to form the indurations such as cement stabilized soil or low-grade concrete, changes the infiltration on the stratum that saw drilling rod passes through
Permeability energy forms the better underground anti-seepage curtain wall of continuity.Can also it is spaced apart in the two sides of earlier antiseepage curtain wall or
Close to construction multiple tracks antiseepage curtain wall, also its intensity and gear can be improved by insertion steel mesh or plant reinforcing bar according to requirement of engineering
Native supporting effect.Slush pump has certain pressure and traffic requirement, and can be according to different depth and stratum and saw drilling rod
Movement velocity carry out pressure adjustment, guarantee that slurries can flow out to ground around saw drilling rod, and it is excessive to be not discharge,
It saws drilling machine to drive the rotation of saw drilling rod and move up and down, by sawtooth sawing on drilling rod and rotary-cut slot side wall sandy soils, simultaneously
The impervious materials original places such as sandy soils and the cement slurry that flows through are sufficiently stirred, and to form cement stabilized soil or low-grade concrete etc. solid
Knot body changes the permeance property and intensity on the stratum that saw drilling rod passes through, forms the better underground anti-seepage curtain wall of continuity.Saw bores
Machine entirety or power head part can be moved forward and backward or be swung with certain amplitude and frequency, enable to saw drilling rod in front of slot
Hole wall applies 100-500N pressure and intermittent contact and is adjacent to, and realizes that saw drilling rod constantly cuts hole wall soil layer and gradually to forward
Into.The saw drilling machine can in conjunction with slot depth and strata condition, by adjusting saw rod rotation speed, pump and front and back pendulum
Dynamic frequency and amplitude, and the grouting pressure 0.3-1.5MPa and flow 50-150L/min of adjustment grouting pump are best to realize
Quality and working efficiency.
Embodiment 5:
It is described according to brill according to the construction method of the constructing device of underground anti-seepage curtain described in embodiment 1 or 2 or 3 or 4
The frequency of bar to pump is 5-30 time/min, amplitude 5-25cm, is transported by the rotation of saw drilling rod and up and down reciprocatingly
It is dynamic, rack saw is bored according to the saw on drilling rod and cuts sand or soil layer with rotary-cut slot side wall, and is filled with impervious materials such as the cement slurries that flows through
Divide stirring to form cement stabilized soil or low-grade concrete, forms the water proof curtain wall of uniformly continuous.
Embodiment 6:
It is described according to the construction method of the constructing device of underground anti-seepage curtain described in embodiment 1 or 2 or 3 or 4 or 5
Kelly is 5-10 times/min, amplitude 3-10cm along the frequency of direction of advance horizontal reciprocating movement.
The technique that this construction equipment has grooving, slip casting and the stirring of groove milling method, kerf method, rotary churning pile and mixing pile concurrently is excellent
Point eliminates and needs mutually to overlap the complicated technology for forming wall or curtain between each wall section or stirring and grouting pile, and gram
It has taken wall or pile body overlaps not tight, the not stringent deficiency of poor continuity, antiseepage, it is thus also avoided that because of the mutual overlap of pile body
Waste of material.Without being segmented and jumping hole or every hole operation when the utility model is constructed, soil layer between adjacent grouting pile ensure that
Grouting stirring quality, and uniformity, continuous whole is realized, the anti-seepage effect of curtain wall is substantially increased, is avoided some anti-
Curtain wall is seeped since piling wall overlaps the leakage phenomenon not occurred sternly, in addition, the equipment and engineering method also improve working efficiency, significantly
Project cost is reduced, continuity, good integrity, barrier performance are high, have the technique and advantage of rotary churning pile and mixing pile concurrently, are better than
The continuity of diaphram wall and have higher barrier performance；And it can be formed by insertion reinforcing bar or plant reinforcing bar more high-strength
The continuous antiseepage curtain wall in the underground of degree.
This antiseepage curtain wall construction equipment is to work continuously to form curtain wall, it is not necessary to slot section be divided to construct and consider to overlap, operation
It need not be segmented and pause in journey and take out the drilling tools such as the saw drilling rod of underground, only need to pass through phase at the two ends of curtain wall or construction pause
Mutual tongue and groove repeats to overlap, and meets abundant overlap joint and the antiseepage requirement of seepage proof curtain, therefore, it is continuous better than diaphram wall
Property, avoiding diaphram wall section construction seam crossing easily there is the possibility leaked, has higher continuity and barrier performance；
In addition, the utility model can be spaced apart in the two sides of earlier antiseepage curtain wall or close to arranging one or multi-channel antiseepage curtain
Wall improves the barrier performance and soil strength and self-stable ability of curtain wall, plays certain supported retaining effect；It can also be according to engineering
Need, by insertion steel mesh or transplant the continuous antiseepage curtain wall in underground that reinforcing bar forms higher-strength, play certain supporting and retaining system and
Load-bearing effect.
The use of this construction equipment and operating method are simple, and construction efficiency is high, without higher spatial and broad operation field
Ground, equipment dismounting and migration are convenient, and scene needs to clear up without a large amount of mud and boring mud, and environmental pollution is small, have very big valence
Lattice advantage, application range and prospect are boundless.
Claims (3)
1. a kind of constructing device of underground anti-seepage curtain, composition includes: saw drilling machine and saw drilling rod, the master on the saw drilling machine
Dynamic drilling rod lower part is connect with the saw drill rod thread, is equidistantly equipped with it is characterized in that: the saw drilling rod is that outer surface is circumferential
The cylindrical structure of one group of sawtooth, the sawtooth is counterclockwise, and backpitch is arranged, between sawtooth described in neighbouring two
Spacing is 5-15cm, and the angle between the sawtooth and horizontal plane is 30 °.
2. the constructing device of underground anti-seepage curtain according to claim 1, it is characterized in that: the saw drilling rod lower end is equipped with
Grout outlet is simultaneously equipped with drill bit.
3. the constructing device of underground anti-seepage curtain according to claim 1, it is characterized in that: the sawtooth is 3-4 row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000701.1U CN209129532U (en) | 2018-11-30 | 2018-11-30 | The constructing device of underground anti-seepage curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000701.1U CN209129532U (en) | 2018-11-30 | 2018-11-30 | The constructing device of underground anti-seepage curtain |
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| Publication Number | Publication Date |
|---|---|
| CN209129532U true CN209129532U (en) | 2019-07-19 |
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ID=67247587
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822000701.1U Expired - Fee Related CN209129532U (en) | 2018-11-30 | 2018-11-30 | The constructing device of underground anti-seepage curtain |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306849A (en) * | 2018-11-30 | 2019-02-05 | 谢时雳 | The constructing device and construction method of underground anti-seepage curtain |
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2018
- 2018-11-30 CN CN201822000701.1U patent/CN209129532U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306849A (en) * | 2018-11-30 | 2019-02-05 | 谢时雳 | The constructing device and construction method of underground anti-seepage curtain |
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Granted publication date: 20190719 Termination date: 20191130 |