CN108755693A - Grouting device and broken charges grouting method for multiple solution cavities - Google Patents
Grouting device and broken charges grouting method for multiple solution cavities Download PDFInfo
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- CN108755693A CN108755693A CN201810608939.4A CN201810608939A CN108755693A CN 108755693 A CN108755693 A CN 108755693A CN 201810608939 A CN201810608939 A CN 201810608939A CN 108755693 A CN108755693 A CN 108755693A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005553 drilling Methods 0.000 claims abstract description 64
- 238000007569 slipcasting Methods 0.000 claims abstract description 61
- 239000002002 slurry Substances 0.000 claims abstract description 60
- 239000011440 grout Substances 0.000 claims abstract description 55
- 238000007582 slurry-cast process Methods 0.000 claims abstract description 33
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 210000002966 serum Anatomy 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000009955 starching Methods 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 34
- 238000012545 processing Methods 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 56
- 239000002775 capsule Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229920002472 Starch Polymers 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- 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)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of broken charges grouting method this application discloses grouting device and for multiple solution cavities, this method include：S1, it is drilled using drilling machine, and is connected to multiple solution cavities by once drilling；S2, the end that grouting device is mounted on to slip casting drilling rod, specified solution cavity is fed through by slurry casting machine；S3, slip casting drilling rod are passed through slurries, and hoisting grouting pressure makes first check-valve open, and borehole sidewall is close in the second spring-backed quill expansion of rear portion grout stopping device；S4, continue to improve grouting pressure second check-valve is caused to open, slurries enter slurry casting machine and front grout stopping device, and borehole sidewall is close in the first spring-backed quill expansion of front grout stopping device；S5, continue improve grouting pressure cause the 4th check-valves of slurry casting machine to open, slurries are injected into solution cavity；S5, slip casting drilling rod is taken out.Construction technique is adjusted according to the size of solution cavity, filling operation during slip casting of the present invention, the processing intent layer position that can be shot the arrow at the target.
Description
Technical field
A kind of broken charges grouting method this application involves grouting device and for multiple solution cavities, belongs to Karst grouting and fills
It fills out, tunnel Rock And Soil is reinforced, foundation stabilization field.
Background technology
Karst is also known as karst, refers to the limestone, dolomite and Sulfates of soluble rock stratum such as carbonate
Gypsum etc. is generated groove, crack and cavity by the chemically and physically effect of water, and since empty top plate slump makes earth's surface generate
The general name of the erosions such as cratering, depression and depositional landforms morphological feature and geologic process.
The geological conditions of karst area is generally all complex, and prospecting difficulty is big, and the influence and harm generated is generally also
It is larger.In the city of karsts developing area, special geological conditions causes solution crack, solution cavity to be developed by force, easily causes Seepage liquidification, underground
The latent erosion of water and vacuum action, so as to cause karst ground subsidence geological disaster.It has sudden, mass-sending property and strong destruction
The problem of property, karst collapse problem is urgent need to resolve in urban construction, especially when there are subway, buried pipes in urban construction
When the underground engineering constructions such as corridor, karst is even more that can not be ignored to the influence that the existing construction of underground engineering construction and its periphery is built
's.
Karst area carry out construction project when, on how to rationally, scientifically handle Cave, prevent underground and ground
Face collapses the emphasis of always domestic and international experts and scholars' research.China karst area is widely distributed, in recent years with me
State increases infrastructure in the engineerings such as railway, highway, building, water conservancy, frequently encounters complex karst stratum, this gives engineering construction
It is to solve the problems, such as this new technology to bring a series of problems, Karst grouting.
In general, Karst grouting is mostly to use surface vertical borehole, the slurries formed using inert material are made in certain pressure
With in lower injection Karst Fissures, solution cavity and in soft modeling clay body opening gap, to reach filling karst cavity, control ground integrally sinks
Drop, the effect for reducing deformation.This mode is mostly to be directed to during the basement process of early construction, and built for what is be completed
It constructs when there is karst ground subsidence, since construction space is limited, can not just be solved by the way of surface vertical borehole.
Existing karst cavity injecting treatment is mostly to rely on vertical exploratory hole to carry out, and vertical drilling is for monomer construction of structures
Treatment effect it is preferable, construction cost is relatively low, such as the solution cavity filling under pile foundation, isolated footing, but is directed to subway, underground
The line styles construction such as piping lane, railway, highway build under basement process when, since the discontinuity of solution cavity, dispersibility can be such that ground bores
Hole treatment effect is had a greatly reduced quality.Meanwhile when ground construction complicated condition, many places do not have conventional drilling equipment, and (vertical hole is drilled
Equipment) execution conditions when, the construction feasibility of surface drilling slip casting can substantially reduce, currently, the country there is no effective processing hand
Section completes the task that the solution cavity encountered in the line styles construction projects such as subway, piping lane carries out filling and injecting slurry processing.
Invention content
A kind of broken charges grouting method the purpose of the present invention is to provide grouting device and for multiple solution cavities, with gram
Take deficiency in the prior art.
To achieve the above object, the present invention provides the following technical solutions：
The embodiment of the present application discloses a kind of grouting device, including the front grout stopping device, slurry casting machine and the rear portion that are sequentially communicated are stopped
Device is starched,
Wherein,
The front grout stopping device includes：
First core pipe has the slurry channels axially communicated；
First spring-backed quill is sheathed on the outside of the first core pipe, and is formed with dielectric cavity between the outer wall of the first core pipe
Body, the first spring-backed quill maximum outside diameter are variable；
Plug is plugged in the one end open of the first core pipe, third check-valves is provided in the first core pipe, the third check-valves
When pressure is greater than or equal to setting pressure in slurry channels medium cavity is connected to slurry channels,
The rear portion grout stopping device includes：
Second core pipe has the slurry channels axially communicated；
Second spring-backed quill is sheathed on the outside of the second core pipe, and is formed with dielectric cavity between the outer wall of the second core pipe
Body, the second spring-backed quill maximum outside diameter is variable, is provided with first check-valve in second core pipe, the first check-valve is in slurries
Channel inner pressure, which is greater than or equal under the first setting pressure, makes medium cavity be connected to slurry channels, the slurry of second core pipe
Liquid exit is provided with second check-valve, and second check-valve pressure in slurry channels, which is more than or equal under the second setting pressure, beats
The serum outlet of the second core pipe is opened, the second setting pressure is more than the first setting pressure.
Preferably, in above-mentioned grouting device, the slurry casting machine includes the tube body axially communicated, is offered on tube body more
A injected hole, is correspondingly arranged that there are one the 4th check-valves on each injected hole respectively.
Preferably, it in above-mentioned grouting device, is rotated using engagement thread between the slurry casting machine and front grout stopping device
Connection.
Preferably, it in above-mentioned grouting device, is rotated using engagement thread between the slurry casting machine and rear portion grout stopping device
Connection.
Preferably, in above-mentioned grouting device, it is provided with accelerator in the dielectric cavity body of the front grout stopping device,
It is provided with accelerator in the dielectric cavity body of the rear portion grout stopping device.
Preferably, in above-mentioned grouting device, first core pipe is provided with respect to the other end of plug with screw thread
The quick coupling of contact surface, the quick coupling are set in the outside of the first core pipe；
The both ends of second core pipe are respectively arranged with the quick coupling with thread surface, which is set in
The outside of two core pipes.
Correspondingly, disclosed herein as well is a kind of broken charges grouting methods for multiple solution cavities, including：
S1, it is drilled using drilling machine, and is connected to multiple solution cavities by once drilling；
S2, the end that any grouting device is mounted on to slip casting drilling rod, specified solution cavity is fed through by slurry casting machine；
S3, slip casting drilling rod are passed through slurries, and hoisting grouting pressure makes first check-valve open, the second bullet of rear portion grout stopping device
Property casing expandable is close to borehole sidewall；
S4, continue improve grouting pressure cause second check-valve to open, slurries enter slurry casting machine and front grout stopping device, front
Borehole sidewall is close in the first spring-backed quill expansion of grout stopping device；
S5, continue improve grouting pressure cause the 4th check-valves of slurry casting machine to open, slurries are injected into solution cavity；
S5, slip casting drilling rod is taken out.
Preferably, in the above-mentioned broken charges grouting method for multiple solution cavities, the slip casting drilling rod and slip casting are bored
It is rotatablely connected between bar,
After waiting for slip casting, by rotating slip casting drilling rod, slip casting drilling rod is taken out, grouting device entirely stays in drilling.
Preferably, in the above-mentioned broken charges grouting method for multiple solution cavities, the drilling machine is horizontal directional drill
Machine.
Preferably, in the above-mentioned broken charges grouting method for multiple solution cavities, the multiple solution cavity is in level side
To series connection.
Compared with the prior art, the advantages of the present invention are as follows：
(1), use the orientation slip casting of high-precision ultra-long horizontal for undergrounds such as rail traffic, piping lanes under the existing building in ground
Construction project provides new solution cavity mortar depositing construction means and (is not required to remove existing construction of structures, not caused to having construction of structures
It influences, influence traffic)；
(2), it constructs by planned course in level bores drilling process, correction is measured to track in real time, is reached
Reduction level bores trajectory error to meet the purpose that the high-precision in subway, piping lane construction is detected, solve conventional vertical drilling because
Inquisition topic is leaked caused by pitch of holes.It is directed to Karst grouting, caused by conventional vertical drilling pitch of holes can be reduced to the greatest extent
Leakage note problem (carries out underground line-shape construction completely to detect slip casting, the point type than vertical hole detects range of grouting bigger, administers
Effect is more preferable).
(3), by the control during high-precision horizontal trajectory design and construction, record rate of penetration, slurry consumption,
Whipstocking intensity etc. carries out on the basis of detecting the position of the horizontal all karst soil caves for boring passed through range with brill with parameter is bored
Processing, reduce underground engineering construction in risk (find out linear underground engineering it is all along bad geological phenomenon, be carried out at the same time
Pretreatment reduces the risk in work progress, is that the dotted drilling in ground is not achieved).
(4), it due to the position grouping of horizontal drilling and solution cavity, is affected by gravity, slurries are easy outflow, nothing before not solidifying
Method is reinforced, and this grouting device and construction method is taken slurries can to leak during effective solution lateral aperture slip casting
Problem.
(5), horizontal drilling slip casting, construction site are fixed, and material in conventional construction mode, equipment conveying transition are reduced
Cost improves work efficiency.
(6), construction technique is adjusted according to the size of solution cavity, filling operation during slip casting, the place that can be shot the arrow at the target
Manage purpose of horizon.
(7), one-step pore-creating, the mode of once grouting can be taken to fill the solution cavity around horizontal grouting hole, improved
Construction efficiency.
(8), the grouting device formed using disposable front grout stopping device, slurry casting machine, rear portion grout stopping device is without waiting for slurry
Liquid solidifies, and improves construction efficiency, while being also effectively prevented the outflow for not solidifying slurries in the solution cavity of injected hole top
The problem of caused solution-cavity filling rate difference.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 show the structural schematic diagram of grouting device in the specific embodiment of the invention；
Fig. 2 show the structural schematic diagram of specific embodiment of the invention middle front part grout stopping device；
Fig. 3 show the structural schematic diagram of specific embodiment of the invention middle and back grout stopping device；
Fig. 4 show the side view of slurry casting machine in the specific embodiment of the invention；
Fig. 5 show the sectional view of slurry casting machine in the specific embodiment of the invention；
Fig. 6 show horizontal orientation Grouting engineering sectional view in the first Application Example of the invention；
Fig. 7 show horizontal brill slip casting in the first Application Example of the invention and starts preceding slurry casting machine state；
Fig. 8 show horizontal brill slip casting in the first Application Example of the invention and starts post grouting device state；
Fig. 9 show horizontal orientation Grouting engineering sectional view in the second Application Example of the invention；
Figure 10 show horizontal brill slip casting in the second Application Example of the invention and starts preceding slurry casting machine state；
Figure 11 show horizontal brill slip casting in the second Application Example of the invention and starts post grouting device state.
Specific implementation mode
Under conditions of not having conventional vertical probing progress solution cavity slip casting for solution ground, technology used by the present embodiment
Scheme is a kind of shallow-layer horizontal directional drill Construction technology of Pouring cement mortar.It is set including construction area selection, horizontal drill type selecting, drilling track
Several working procedures such as meter, drilling data record, unfavorable geologic body (solution cavity) detection and the solution cavity slip casting of horizontal drilling region.
Horizontal orientation exploration engineering is based on Horizontal Directional Drilling and Geophysical Logging.Horizontal directional drilling skill
Art is to pierce stratum at pilot hole, then using the drilling device of installation and earth's surface with the angle of penetration smaller relative to ground
By expanding to the required size of pilot hole and it is laid with a technology of pipeline, there is tracking and guide function in construction.
Horizontal orientation pore-forming selects suitable horizontal directional drilling machine according to geologic information, pull-back force size, feed stroke and
Drilling rod model is the leading indicator of drilling machine type selecting.
After selected drilling machine model, according to floor space, traffic conditions, water and electricity supply situation, deslagging requires and noise requirements
The reasonable place of index choosing.
According to the spatial relation in place and solution cavity slip casting section, no more than screw rod drill bit maximum deflecting ability the case where
Lower design drilling track coordinates the preliminary analysis of geologic information to determine drilling after investigating and analysing periphery targeting signal interference source
Method and drilling parameter, including penetrating angle, rate of penetration, slurry consumption, whipstocking intensity.
It can be sentenced according to parameters such as the parameters of drilling process, such as rate of penetration, drilling pressure in level bores drilling process
The position of disconnected solution cavity.Simultaneously using Geophysical Logging, such as electricity, magnetic, sound, heat, core physical principle manufacture various
Logger is sent to shaft bottom by logging cable, and with above carrying for cable, surface acquisition system is by continuous record with change in depth
Various parameters, by characterizing the curvilinear motion of these parameters, to identify the horizontal preservation position for boring solution cavity on bore path.
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In conjunction with described in Fig. 1, in the embodiment of the application, a kind of grouting device is provided, including the front being sequentially communicated is stopped
Starch device 10, slurry casting machine 20 and rear portion grout stopping device 30.
In the technical solution, front grout stopping device and rear portion grout stopping device carry out to treat the drilling at slip casting solution cavity both ends respectively
It blocks, slurry casting machine treats the progress slip casting of slip casting solution cavity to realize.
In conjunction with shown in Fig. 2, front grout stopping device 10 includes the first core pipe 101, the first spring-backed quill 102 and plug 103.
There are first core pipe 101 slurry channels axially communicated, the first spring-backed quill 102 to be sheathed on the first core pipe 101
Outside, and medium cavity is formed between the outer wall of the first core pipe 101,101 maximum outside diameter of the first spring-backed quill is variable.
Plug 103 is plugged in the one end open of the first core pipe 101, the other end of the first core pipe 101 to slurry casting machine 20
One end connection.
It is provided with third check-valves 104 in first core pipe 101, which is more than
Or when equal to setting pressure medium cavity is connected to slurry channels,
In the technical solution, third check-valves one-way conduction, and pressure is greater than or equal to setting pressure in slurry channels
Down so that medium cavity is connected to slurry channels, and pressure is less than under setting pressure so that medium cavity and slurry in slurry channels
Liquid is closed between channel.
In one embodiment, it is provided with accelerator in the dielectric cavity body of front grout stopping device 10.
In one embodiment, the first spring-backed quill 102 is rubber capsule, and the both ends of the rubber capsule are bound to first respectively
In core pipe 101.
In one embodiment, the both ends of the first core pipe 101 are respectively arranged with quick coupling 105, which is arranged
In the outside of the first core pipe 101.
Further, quick coupling 105 has thread joint face, is connect by screw-thread fit between slurry casting machine 20.
During 10 slip casting of front grout stopping device, slurries enter front grout stopping device 10 by quick coupling 105, with slip casting pressure
The raising of power, third check-valves 104 are opened immediately, and slurries enter in rubber capsule 102, and with the promotion of pressure, rubber is by capsule
Slip casting increases and is close to borehole wall, while slurries are combined with the accelerator in rubber capsule 102, quickly makes rubber after solidification
Capsule becomes an entity, achievees the purpose that the gap for preventing slurries between grout stopping device and borehole wall is flowed out.Front grout stopping device
Front is provided with plug, therefore cannot be used alone.
In conjunction with shown in Fig. 3, rear portion grout stopping device 30 includes the second core pipe 301 and the second spring-backed quill 302.
There are second core pipe 301 slurry channels axially communicated, the second spring-backed quill 302 to be sheathed on the second core pipe 301
Outside, and medium cavity is formed between the outer wall of the second core pipe 301,302 maximum outside diameter of the second spring-backed quill is variable.
It is provided with first check-valve 303 in second core pipe 301, which is more than
Or it is set equal to first under pressure so that medium cavity is connected to slurry channels.
It is provided with second check-valve 304 at the serum outlet of second core pipe 301, the second check-valve 304 is in slurry channels
Interior pressure is more than or equal under the second setting pressure the serum outlet for opening the second core pipe, and the second setting pressure is more than the first setting and presses
Power.
In the technical solution, first check-valve one-way conduction, and pressure is greater than or equal to the first setting in slurry channels
So that medium cavity is connected to slurry channels under pressure, and pressure is less than under the first setting pressure so that medium in slurry channels
It is closed between cavity and slurry channels；Second check-valve one-way conduction, and pressure is more than or equal to the second setting in slurry channels
The serum outlet of core pipe is opened under pressure, and pressure goes out less than the slurries for closing core pipe under the second setting pressure in slurry channels
Mouthful.
In one embodiment, it is provided with accelerator in the dielectric cavity body of rear portion grout stopping device 30.
In one embodiment, the second spring-backed quill 302 is rubber capsule, and the both ends of the rubber capsule are bound to second respectively
In core pipe 301.
In one embodiment, the both ends of the second core pipe 301 are respectively arranged with quick coupling 305,306, the quick coupling
305,306 outside for being set in the second core pipe 301.
Further, quick coupling 305,306 has thread joint face.
In the technical solution, for the 30 left side quick coupling 305 of rear portion grout stopping device to be connected with slurry casting machine 20, right side is quick
Connector 306 is connected with drilling rod, and during slip casting, slurries enter rear portion grout stopping device by right side quick coupling 306, with slip casting
The raising of pressure, first check-valve 303 are opened immediately, and slurries enter in rubber capsule 302, and with the promotion of pressure, rubber will
Capsule slip casting increases and is close to borehole wall, while slurries are combined with the accelerator in rubber capsule 302, quickly makes rubber after solidification
Hide glue capsule becomes an entity, achievees the purpose that the gap for preventing slurries between grout stopping device and borehole wall is flowed out.It only starches at rear portion
Device can be used alone.
In conjunction with shown in Fig. 4 and Fig. 5, slurry casting machine 20 includes the tube body 201 axially communicated, and multiple notes are offered on tube body 201
Hole 202 is starched, is correspondingly arranged that there are one the 4th check-valves 203 on each injected hole 202 respectively.
The both ends of tube body 201 are also respectively formed with thread joint face 204, and thread joint face 204 is preferably formed in tube body 201
Inner surface.
Slurry casting machine is the horizontal grouting device for boring grouting device, and left side thread joint face is connected with front grout stopping device, right
Side thread joint face is connected with rear portion grout stopping device, when slurries enter from rear portion grout stopping device in slurry casting machine, while entering front and only starching
Device is close to hole wall with the gradual increase of pressure after causing front and back grout stopping device to expand, when grouting pressure continues to increase, the 4th
Check-valves is opened, and slurries are entered by injected hole in karst cavity, starts to carry out slip casting to the passed through solution cavity that drills.Slip casting
Device need to be applied in combination with forward and backward grout stopping device, not can be used alone.
In conjunction with shown in Fig. 6 to Fig. 8, in the first Application Example, the section of the engineering of 401 lower section of building generally includes
Soil layer 402, development Karst Cave Formation 403 are developed stratum 404 without solution cavity and are formed in multiple molten in development Karst Cave Formation 403
Hole 405.
When solution cavity disclosed in region is more independent, solution cavity spacing distance farther out when；It is directed to built construction of structures
When lower section regional area carries out slip casting, broken charges slip casting can be selected.
It is drilled using drilling machine 406, and multiple solution cavities 405 is connected first by drilling 407.
According to the solution cavity size of quasi- slip casting when slip casting, the slurry casting machine 20 of appropriate length is selected, by front grout stopping device 10, slip casting
Device 20, rear portion grout stopping device 30, drilling rod 50 are sequentially connected, and grouting pump are connected with slip casting drilling rod, gradual hoisting grouting pressure makes
Hole wall (in conjunction with shown in Fig. 8) is close in front grout stopping device, the expansion of rear portion grout stopping device outer capsule, and continuing raising grouting pressure causes to note
It starches check-valves at device injected hole to open, slurries is injected into solution cavity, after waiting for slip casting, rotary drill rod takes out slip casting drilling rod,
Repeat slip casting according to next solution cavity position.
In the Application Example, can slip casting be carried out to the solution cavity of distalmost end first, then replace grouting device (before containing
Portion's grout stopping device, slurry casting machine and rear portion grout stopping device), according to being sequentially completed slip casting operation from the distant to the near.After the completion of slip casting, grouting device
Permanent stay in realizes closure in solution cavity.
In conjunction with shown in Fig. 9 to Figure 11, when disclosed solution cavity connectivity is preferable in hole, and the disclosed solution cavity that drills is more, choosing
With complete opening grouting mode.
It is drilled using drilling machine 606, and multiple solution cavities 605 is connected first by drilling 607.
Rear portion grout stopping device 30, drilling rod 50 are sequentially connected, 30 tripping in of rear portion grout stopping device to quasi- slip casting section, by grouting pump and note
It starches drilling rod to be connected, gradual hoisting grouting pressure makes grout stopping device outer capsule expansion in rear portion be close to hole wall (see Figure 11), continues to carry
High grouting pressure causes check-valves at slurry casting machine injected hole to open, and slurries are injected into solution cavity, after waiting for slip casting, rotary drilling
Bar takes out slip casting drilling rod.
In the Application Example, can slip casting directly be carried out to the solution cavity of most proximal end, after the completion of slip casting, grouting device is forever
Long property, which stays in, realizes closure in solution cavity.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of grouting device, which is characterized in that including the front grout stopping device, slurry casting machine and rear portion grout stopping device being sequentially communicated,
Wherein,
The front grout stopping device includes：
First core pipe has the slurry channels axially communicated；
First spring-backed quill is sheathed on the outside of the first core pipe, and is formed with medium cavity between the outer wall of the first core pipe, the
One spring-backed quill maximum outside diameter is variable；
Plug is plugged in the one end open of the first core pipe, third check-valves is provided in the first core pipe, which is starching
Liquid channel inner pressure makes medium cavity be connected to slurry channels when being greater than or equal to setting pressure,
The rear portion grout stopping device includes：
Second core pipe has the slurry channels axially communicated；
Second spring-backed quill is sheathed on the outside of the second core pipe, and is formed with medium cavity between the outer wall of the second core pipe, the
Two spring-backed quill maximum outside diameters are variable, are provided with first check-valve in second core pipe, the first check-valve is in slurry channels
Interior pressure is greater than or equal under the first setting pressure so that medium cavity is connected to slurry channels, and the slurries of second core pipe go out
It is provided with second check-valve at mouthful, second check-valve pressure in slurry channels, which is more than or equal under the second setting pressure, opens the
The serum outlet of two core pipes, the second setting pressure are more than the first setting pressure.
2. grouting device according to claim 1, which is characterized in that the slurry casting machine includes the tube body axially communicated, pipe
Multiple injected holes are offered on body, are correspondingly arranged respectively on each injected hole there are one the 4th check-valves.
3. grouting device according to claim 1, which is characterized in that use spiral shell between the slurry casting machine and front grout stopping device
Line mode is rotatablely connected.
4. grouting device according to claim 1, which is characterized in that use spiral shell between the slurry casting machine and rear portion grout stopping device
Line mode is rotatablely connected.
5. grouting device according to claim 1, which is characterized in that be provided in the dielectric cavity body of the front grout stopping device
Accelerator,
It is provided with accelerator in the dielectric cavity body of the rear portion grout stopping device.
6. grouting device according to claim 1, which is characterized in that first core pipe is arranged with respect to the other end of plug
There is the quick coupling with thread contact face, which is set in the outside of the first core pipe；
The both ends of second core pipe are respectively arranged with the quick coupling with thread surface, which is set in the second core
The outside of pipe.
7. a kind of broken charges grouting method for multiple solution cavities, which is characterized in that including：
S1, it is drilled using drilling machine, and is connected to multiple solution cavities by once drilling；
S2, the end that any grouting device of claim 2 to 6 is mounted on to slip casting drilling rod, finger is fed through by slurry casting machine
Determine solution cavity；
S3, slip casting drilling rod are passed through slurries, and hoisting grouting pressure makes first check-valve open, the second resilient sleeve of rear portion grout stopping device
Tube swelling is close to borehole sidewall；
S4, continue to improve grouting pressure second check-valve is caused to open, slurries enter slurry casting machine and front grout stopping device, and front is only starched
Borehole sidewall is close in the first spring-backed quill expansion of device；
S5, continue improve grouting pressure cause the 4th check-valves of slurry casting machine to open, slurries are injected into solution cavity；
S5, slip casting drilling rod is taken out.
8. the broken charges grouting method according to claim 7 for multiple solution cavities, which is characterized in that the slip casting is bored
It is rotatablely connected between bar and slip casting drilling rod,
After waiting for slip casting, by rotating slip casting drilling rod, slip casting drilling rod is taken out, grouting device entirely stays in drilling.
9. the broken charges grouting method according to claim 7 for multiple solution cavities, which is characterized in that the drilling machine is
Horizontal directional drilling machine.
10. the broken charges grouting method according to claim 7 for multiple solution cavities, which is characterized in that the multiple
Solution cavity is connected in the horizontal direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608939.4A CN108755693B (en) | 2018-06-13 | 2018-06-13 | Grouting device and in-hole sectional grouting method for multiple karst caves |
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| CN201810608939.4A CN108755693B (en) | 2018-06-13 | 2018-06-13 | Grouting device and in-hole sectional grouting method for multiple karst caves |
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| CN108755693B (en) | 2024-02-23 |
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