CN108360525A - A kind of per-fore pouring liquid with small pipe construction technology and equipment - Google Patents
A kind of per-fore pouring liquid with small pipe construction technology and equipment Download PDFInfo
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- CN108360525A CN108360525A CN201810178464.XA CN201810178464A CN108360525A CN 108360525 A CN108360525 A CN 108360525A CN 201810178464 A CN201810178464 A CN 201810178464A CN 108360525 A CN108360525 A CN 108360525A
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- grouting
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- ductule
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of per-fore pouring liquid with small pipe construction technology and equipment, including grouting pump, inlet pipe and ductule, the input terminal of shown grouting pump is connected to the connection of slurries reserve pit by inlet pipe, and valve is installed on inlet pipe, the output end of grouting pump is connected to Grouting Pipe, pressure gauge and flowmeter are installed, Grouting Pipe is connected to slurries reserve pit by return pipe, and slip casting tube end connects floral tube by articulation in Grouting Pipe；Leading pre-supporting is by grouting with small pipe strengthening stratum when excavation, and advance support is 40 × 2.75 pre-grouting with micropipe of Φ, and tube wall interlocks jewel hole every 100~200mm, eyelet diameter 10mm, vault ductule sets a ring, mono- Pin of grid spacing 0.5m per Pin grids, circumferential spacing 0.3m, when first Zhi Houdu is 0.3m, 0.35m thickness, joint length 2m, 20 °~25 ° of first level inclination, grouting pressure is 0.4~0.6MPa, and stop grouting plug is arranged at aperture；Grouting pressure is controlled well, slurries is effectively prevent to leak outside, per-fore pouring liquid with small pipe effect is good.
Description
Technical field
The present invention relates to technical field of tunnel construction, specifically a kind of per-fore pouring liquid with small pipe construction technology and equipment.
Background technology
In constructing tunnel, V grades of country rocks generally take advance support, advance support generally to use grouting with small pipe to weakness
Body country rock carries out pre-reinforcement processing, to ensure to excavate safety.It must install and note in ductule end before per-fore pouring liquid with small pipe
Mouth is starched, ductule and Grouting Pipe are connected by grouting nozzle.Current grouting nozzle mounting means is all by one piece of diameter slightly larger than small
The circular seal steel plate site welding of catheter outer diameter seals the hole that a Φ 20 or so is opened among steel plate in the end of ductule,
The grouting nozzle of Φ 20 is welded at hole again.It is counted according to site operation, each grouting nozzle and the time of ductule welding about need 5
Minute or so, the ductule quantity that the construction of conventional bore tunnel each recycles is mostly at 40 or more, the time of grouting nozzle welding
About 200min or so, therefore this process consumes the plenty of time, has seriously affected Tunnel Construction Schedule.And each slip casting
Mouth can not be reused after being welded with ductule, cause centainly to waste, improve construction cost.
Invention content
The purpose of the present invention is to provide a kind of per-fore pouring liquid with small pipe construction technology and equipment, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of per-fore pouring liquid with small pipe construction equipment, including grouting pump, inlet pipe and ductule, the input of shown grouting pump
End is connected to the connection of slurries reserve pit by inlet pipe, and valve is equipped on inlet pipe, and the output end of grouting pump is connected to Grouting Pipe,
Pressure gauge and flowmeter are installed, Grouting Pipe is connected to slurries reserve pit by return pipe, and slip casting tube end passes through work in Grouting Pipe
Connector connects floral tube.
As a further solution of the present invention：The ductule isT=2.75mm steel welded tubes are process, tube head
25~35 ° of centrums are processed into, tube wall has injected hole, 6~10mm of aperture, 100~200mm of pitch-row, quincuncial arrangement, tail portion 0.5m
It does not drill in range, end welderingRing-shaped stirrup.
As a further solution of the present invention：The installation of the ductule is first drilled with electric drill, is inserted into ductule, is then used
Pneumatic pick heads into ductule.
A kind of per-fore pouring liquid with small pipe construction technology, including following construction technology：
1) transverse passage-way vault
For leading pre-supporting by grouting with small pipe strengthening stratum, advance support is that 40 × 2.75 ductules of Φ are noted in advance when excavation
Slurry, tube wall interlock jewel hole every 100~200mm, eyelet diameter 10mm, vault ductule, set a ring per Pin grids, between grid
Away from mono- Pin of 0.5m, when circumferential spacing 0.3m, first Zhi Houdu are 0.3m, 0.35m thickness, joint length 2m, 20 ° of first level inclination~
25 °, grouting pressure is 0.4~0.6MPa, and stop grouting plug is arranged at aperture；
2) ingate outer profile
Launching shaft building enclosure isCast-in-situ bored pile add bracing members system, later stage to perform thick 700mm's
Structure side wall, and carry out ingate according to design requirement and reserve, after the completion of the construction of shield well construction, progress ingate is small in advance to lead
Pipe grouting and reinforcing.
As a further solution of the present invention：Construction arch advanced tubule, pre-pouring grout strengthening stratum；Excavate the arch soil body
The top soil body retains Core Soil, and upper section mesh paving erects grid steel frame, dowel construction, and gunite concrete is locked foot anchor tube and applied
Work excavates Core Soil, and is arranged as required to interim inverted arch, and upper half section is made to close early, and is backfilled behind to first branch in time
Slip casting.
Compared with prior art, the beneficial effects of the invention are as follows：After the present invention is connected by Grouting Pipe, first pressed before slip casting
Whether water test pipeline is unimpeded, then starts grouting pump, is pressed into stratum by ductule, controls grouting pressure well, have
Effect prevents slurries from leaking outside, and per-fore pouring liquid with small pipe effect is good.
Description of the drawings
Fig. 1 is the grouting with small pipe construction process figure of the present invention.
Fig. 2 is the medium and small catheter fabrication schematic diagram of the present invention.
Fig. 3 is grouting construction process and equipment drawing in the present invention.
Fig. 4 is middle drift top of the present invention excavation and per-fore pouring liquid with small pipe figure.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the embodiment of the present invention, a kind of per-fore pouring liquid with small pipe construction technology and equipment, including closing working face, drilling,
Ductule, slip casting, validity check etc. are installed, construction technology process please refers to Fig.1 shown.
Wherein, ductule processing and fabricating：Ductule usesT=2.75mm steel welded tubes are process, and tube head is processed into
25~35 ° of centrums so as to inserting piling, and prevent slurries preshoot.Tube wall has an injected hole, 6~10mm of aperture, 100~200mm of pitch-row,
Quincuncial arrangement does not drill within the scope of the 0.5m of tail portion, mortar leakage prevention, end welderingRing-shaped stirrup, end when to prevent setting ductule
Portion cracks, and influences Grouting Pipe connection, please refers to shown in Fig. 2.
Ductule is installed：It is first drilled with electric drill, is inserted into ductule, is then headed into ductule with pneumatic pick.
Grouting process and equipment：After Grouting Pipe is connected, whether first packer permeability test pipeline is unimpeded before slip casting, then starts note
Stock pump is pressed into stratum by ductule, please refers to shown in Fig. 3.Wherein, the input terminal of grouting pump is connected to slurries storage by inlet pipe
Stock tank is connected to, and valve is equipped on inlet pipe, and the output end of grouting pump is connected to Grouting Pipe, be equipped in Grouting Pipe pressure gauge and
Flowmeter, Grouting Pipe are connected to slurries reserve pit by return pipe, and slip casting tube end connects floral tube by articulation.
Grouting with small pipe Divisional construction technique：
1) transverse passage-way vault
Leading pre-supporting uses grouting with small pipe strengthening stratum when excavation.Advance support is pre- using 40 × 2.75 ductules of Φ
Slip casting, tube wall interlock jewel hole every 100~200mm, eyelet diameter 10mm, in addition to special indicate, vault ductule, per Pin grids
Set a ring, mono- Pin of grid spacing 0.5m, when circumferential spacing 0.3m, first Zhi Houdu are 0.3m, 0.35m thickness, joint length 2m, just
20 °~25 ° of level inclination.Grouting serous fluid is selected according to strata condition, and Mortar mix proportion is determined by field test, and according to horizontal logical
Wall rock condition around road controls grouting pressure (0.4~0.6MPa).To prevent slurries from leaking outside, can be set at aperture when necessary
Stop grouting plug is set, is please referred to shown in Fig. 4.
It should be noted that：Construction arch advanced tubule, pre-pouring grout strengthening stratum；Excavate arch soil body top soil
Body, retains Core Soil, and upper section mesh paving erects grid steel frame, dowel construction, gunite concrete, lock foot anchor tube construction.It excavates
Core Soil.And it is arranged as required to interim inverted arch, so that upper half section is closed early, and in time to the backfill slip casting behind of first branch.
2) ingate outer profile
Launching shaft building enclosure usesCast-in-situ bored pile add bracing members system, later stage to perform thick 700mm
Structure side wall.And carry out ingate according to design requirement and reserve, after the completion of the construction of shield well construction, dismounting structure Construction Support
System simultaneously sets up one-shot job platform, carries out ingate per-fore pouring liquid with small pipe reinforcing, is enclosed according to each pilot tunnel sequence of construction
Fender pile is abolished, and supporting grid enters transverse passage-way excavation after the completion of abolishing, and shield well transverse passage-way is divided into southern side transverse passage-way and north side goes out
Native channel abolishes the unearthed tunnel fender post in north side and abolishes southern side shield successively after unearthed tunnel excavation completes 15m successively first
Structure originates transverse passage-way fender post, carries out adit construction.
Grouting with small pipe key measures
1) stringent control match ratio and gel time after primary election match ratio, controls to adjust match ratio, and survey with gel time
Determine the intensity of grouting soil, selectes optimum mix.
2) during slip casting, grouting pressure is strictly controlled, final grouting pressure must reach design requirement, and 1~2min of voltage stabilizing,
Ensure the penetration range of slurries.Grouting pressure must not exceed the maximum pressure of setting, prevents malformation, grout leaking, jeopardizes
The abnormal phenomenon of underground structure, above ground structure.When there is abnormal phenomenon, following control measure are taken：
1. reducing grouting pressure or using interval slip casting；
2. changing injecting paste material or shortening slurries gel time, slip casting embodiment is adjusted；
3. slip casting effect inspection：First, slip casting effect is checked with grout absorption, second is that using inspection technique is disclosed.Because of ductule
Slip casting is the single consolidation slip casting in periphery, and the working face soil body detects the effect of grouting soil after disclosing, and if effect is bad, is adjusted in time
Whole Mortar mix proportion improves grouting process；
4. to prevent aperture spillage, the gap of drilling and floral tube is blocked with cement-silicate colloid in floral tube tail end；
5. Grouting Pipe uses flare connection with floral tube, ensure rapid-assembling/disassembling；
6. the order of slip casting is symmetrically carried out to centre from both sides, hole-specifically slip casting from bottom to top；
7. after removing articulation, quickly blocking floral tube mouth with cement-roll, prevent the slurries not coagulated from outflowing；
8. slip casting reaches need intensity after can carry out excavation operation.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour
A little simple modification, equivalent change and modifications, belong in the range of technical solution of the present invention.
Claims (5)
1. a kind of per-fore pouring liquid with small pipe construction equipment, including grouting pump, inlet pipe and ductule, which is characterized in that shown note
The input terminal of stock pump is connected to the connection of slurries reserve pit by inlet pipe, and valve is equipped on inlet pipe, the output end of grouting pump
It is connected to Grouting Pipe, pressure gauge and flowmeter are installed in Grouting Pipe, Grouting Pipe is connected to slurries reserve pit, Grouting Pipe by return pipe
End connects floral tube by articulation.
2. a kind of per-fore pouring liquid with small pipe construction equipment according to claim 1, which is characterized in that the ductule isT=2.75mm steel welded tubes are process, and tube head is processed into 25~35 ° of centrums, and tube wall has an injected hole, 6~10mm of aperture,
100~200mm of pitch-row, quincuncial arrangement do not drill within the scope of the 0.5m of tail portion, end welderingRing-shaped stirrup.
3. a kind of per-fore pouring liquid with small pipe construction equipment according to claim 2, which is characterized in that the peace of the ductule
Dress is first drilled with electric drill, is inserted into ductule, is then headed into ductule with pneumatic pick.
4. a kind of per-fore pouring liquid with small pipe construction technology, which is characterized in that including following construction technology：
1) transverse passage-way vault
For leading pre-supporting by grouting with small pipe strengthening stratum, advance support is 40 × 2.75 pre-grouting with micropipe of Φ when excavation,
Tube wall interlocks jewel hole every 100~200mm, eyelet diameter 10mm, vault ductule, and a ring, grid spacing are set per Pin grids
Mono- Pin of 0.5m, when circumferential spacing 0.3m, first Zhi Houdu are 0.3m, 0.35m thickness, joint length 2m, 20 °~25 ° of first level inclination,
Grouting pressure is 0.4~0.6MPa, and stop grouting plug is arranged at aperture；
2) ingate outer profile
Launching shaft building enclosure isCast-in-situ bored pile add bracing members system, later stage to perform the structure of thick 700mm
Side wall, and carry out ingate according to design requirement and reserve, after the completion of the construction of shield well construction, carry out ingate advanced tubule note
Slurry is reinforced.
5. a kind of per-fore pouring liquid with small pipe construction technology according to claim 4, which is characterized in that construction arch is small in advance
Conduit, pre-pouring grout strengthening stratum；The arch soil body top soil body is excavated, Core Soil is retained, upper section mesh paving erects grid steel frame,
Dowel is constructed, gunite concrete, and lock foot anchor tube construction excavates Core Soil, and be arranged as required to interim inverted arch, keeps upper half disconnected
Face is closed early, and in time to the backfill slip casting behind of first branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178464.XA CN108360525A (en) | 2018-03-05 | 2018-03-05 | A kind of per-fore pouring liquid with small pipe construction technology and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178464.XA CN108360525A (en) | 2018-03-05 | 2018-03-05 | A kind of per-fore pouring liquid with small pipe construction technology and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108360525A true CN108360525A (en) | 2018-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810178464.XA Pending CN108360525A (en) | 2018-03-05 | 2018-03-05 | A kind of per-fore pouring liquid with small pipe construction technology and equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630157A (en) * | 2018-11-09 | 2019-04-16 | 中铁二十二局集团轨道工程有限公司 | A kind of regulator control system of Tunnel Engineering and ground water regime |
| CN110005442A (en) * | 2019-04-26 | 2019-07-12 | 中铁二十三局集团第六工程有限公司 | Under wear existing building Urban Underground mining sectbn surrounding rock consolidation technique |
| CN111042824A (en) * | 2020-01-08 | 2020-04-21 | 华东交通大学 | Intelligent grouting guide pipe with pressure detection device |
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|---|---|---|---|---|
| JP2000145398A (en) * | 1998-09-11 | 2000-05-26 | Bridgestone Corp | Injection pipe used for consolidation and reinforcement of ground |
| CN201763349U (en) * | 2010-09-17 | 2011-03-16 | 中铁十九局集团轨道交通工程有限公司 | Two-liquid grouting device |
| CN104196537A (en) * | 2014-08-26 | 2014-12-10 | 广东省建筑工程机械施工有限公司 | Construction method of three parallel metro tunnels with ultra-small clear distance |
| CN205778881U (en) * | 2016-06-30 | 2016-12-07 | 中交第四公路工程局有限公司 | A kind of quick grouting device for tunnel per-fore pouring liquid with small pipe |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145398A (en) * | 1998-09-11 | 2000-05-26 | Bridgestone Corp | Injection pipe used for consolidation and reinforcement of ground |
| CN201763349U (en) * | 2010-09-17 | 2011-03-16 | 中铁十九局集团轨道交通工程有限公司 | Two-liquid grouting device |
| CN104196537A (en) * | 2014-08-26 | 2014-12-10 | 广东省建筑工程机械施工有限公司 | Construction method of three parallel metro tunnels with ultra-small clear distance |
| CN205778881U (en) * | 2016-06-30 | 2016-12-07 | 中交第四公路工程局有限公司 | A kind of quick grouting device for tunnel per-fore pouring liquid with small pipe |
Non-Patent Citations (3)
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| 曹建新: "浅埋偏压软岩大跨隧道环形开挖预留核心土法施工技术探讨", 《西部探矿工程》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630157A (en) * | 2018-11-09 | 2019-04-16 | 中铁二十二局集团轨道工程有限公司 | A kind of regulator control system of Tunnel Engineering and ground water regime |
| CN110005442A (en) * | 2019-04-26 | 2019-07-12 | 中铁二十三局集团第六工程有限公司 | Under wear existing building Urban Underground mining sectbn surrounding rock consolidation technique |
| CN111042824A (en) * | 2020-01-08 | 2020-04-21 | 华东交通大学 | Intelligent grouting guide pipe with pressure detection device |
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Application publication date: 20180803 |
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