CN106381863A - Drilling and grouting combined device for grouting reinforcement of water-rich sand stratum and construction technique - Google Patents
Drilling and grouting combined device for grouting reinforcement of water-rich sand stratum and construction technique Download PDFInfo
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- CN106381863A CN106381863A CN201610940152.9A CN201610940152A CN106381863A CN 106381863 A CN106381863 A CN 106381863A CN 201610940152 A CN201610940152 A CN 201610940152A CN 106381863 A CN106381863 A CN 106381863A
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- 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
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Abstract
The invention discloses a drilling and grouting combined device for grouting reinforcement of a water-rich sand stratum and a construction technique. The drilling and grouting combined device for grouting reinforcement of the water-rich sand stratum comprises a grouting pipe body. The grouting pipe body is formed by sequentially connecting a plurality of grouting pipes. The outer side of the pipe wall of each grouting pipe is sleeved with an expandable grout container. A plurality of grout outlets are formed in the portions, matched with the grout containers, of the pipe walls of the grouting pipes. Grout enters the grout containers from the grout outlets of the grouting pipes to make the grout containers expand, and thus the grout containers and the sand stratum around the grout containers are compacted. Integrated operation of drilling and grouting reinforcement in the sand stratum can be achieved through the drilling and grouting combined device. According to the drilling and grouting combined device for grouting reinforcement of the water-rich sand stratum and the construction technique, since the grout containers can contain the grout and can expand, the splitting effect of grout on the sand stratum and linear extension of grout veins during grouting in the prior art are eliminated; and the purpose of reserving the grout around drilled holes is achieved, and the effect of compacting the loose sand stratum around the drilled holes is achieved through expansion of the grout containers.
Description
Technical field
The invention belongs to the technical field such as tunnel, subway and slope treatment is and in particular to a kind of add to rich water sand bed slip casting
Solid brill note set composite and construction technology.
Background technology
It is known that after underground engineering or Reinforcement Works of Rock Slopes run into sand bed, serious wall damage all can be faced with existing
As.Its reason is that the especially sand bed of rich water has flowing in the presence of water because sand bed has loose, no any cementing properties
Property, once artificial perturbation, sand bed can unstability cave in；Construct in the sand bed of rich water, sometimes there is also under subsoil water carries,
The grains of sand spray outflow as flowing water.Engineering and the safety of workmen in serious harm.At present both at home and abroad to sand bed especially
Technical barrier is existed to the grouting and reinforcing of the sand bed of rich water, is mainly manifested in the following aspects：One is construction in sand bed
During inlet well because hole wall collapse serious it is difficult to pore-forming；Two when being grouting and reinforcing in this kind of sand bed, between the grains of sand
No cementing properties, serosity can unconfined outside splitting migration under minimum pressure, formed very narrow to far-end unlimited+prolong
The wire slurry arteries and veins of exhibition, serosity is difficult to retaining around boring it is difficult to play the purpose reinforcing sand bed around boring it is impossible to be formed with
The slurry arteries and veins self-supporting system with higher-strength of effect, poor to the grouting consolidation effect of boring controlled range entirety sand bed.Therefore
Slip casting terminates rear digging process, in addition to being still difficult to find the presence of slurry arteries and veins, on a large scale cave in phenomenon still occurs.It is badly in need of at present
Solve is how to control to be injected into husky in the layer serosity and can be effectively controlled around boring, not only to boring around loose
Sand play crowd in-out effects (rather than slabbing action), and so that the serosity of injection is deposited in around boring, make grouting and reinforcing area
Form the slurry pulsation support body with certain support strength, and by the crowd in-out effects to sand bed, improve the permeability of sand bed, subtract
Few subsoil water enters into the flow in engineering by sand bed, to ensure harnessing project in husky in the layer safe construction and engineering later stage
Safe normal operation.
Content of the invention
The purpose of the present invention is for overcoming above-mentioned the deficiencies in the prior art, is that effectively solving is difficult to serosity during sand bed slip casting
Be deposited in around boring and sand bed carried out with a compacted grouting reinforcement technique difficult problem, provide a kind of to rich water sand bed grouting and reinforcing
Bore note set composite, it is possible to achieve in the integration operation of sand bed internal drilling and grouting and reinforcing.
The present invention also provides a kind of grouting device to rich water sand bed grouting and reinforcing, it is possible to achieve the extruding to rich water sand bed
Closely knit effect, improves the permeability of sand bed.
The present invention also provides a kind of brill to rich water sand bed grouting and reinforcing to note the construction technology of set composite, can pass through many
Individual bored grouting forms the country rock self-supporting system with higher-strength, and combines by compacted sand bed it is achieved that boring controls model
Enclose the integrally-built stability of interior sand bed.
For achieving the above object, the present invention adopts following technical proposals：
Grouting device to rich water sand bed grouting and reinforcing, including slip casting tube body, described slip casting tube body is by more piece slip casting
Pipe connects successively and forms, and each described Grouting Pipe is arranged with expandable serosity outside tube wall and contains body, described Grouting Pipe
Tube wall is provided with multiple slurry outlets at body cooperation containing with serosity, and serosity enters serosity from the slurry outlet of Grouting Pipe and contains body and makes slurry
Liquid splendid attire volume expansion compacted serosity splendid attire body and about sand bed.Serosity enters serosity by slurry outlet from Grouting Pipe and contains body, if
Put the normal outflow that slurry outlet both can guarantee that serosity, can guarantee that serosity filling serosity contains the uniformity of body.The note connecting successively
The outside serosity of slurry pipe contain physical ability make serosity splendid attire body and sand bed about be all extruded closely knit.
Preferably, described serosity contains outside when body is installed and is wound with cladding protection body.Avoid when precession is holed, serosity
Contain body to sustain damage.
It is further preferred that described cladding protection body is twist, described cladding protection body is waterproof construction.Cladding protection
Body arranges spirality, and preferably protection serosity splendid attire body will not be by hole wall friction destruction.
Preferably, it is provided with check-valves between the described Grouting Pipe of adjacent segments.Setting check-valves it is ensured that serosity full of work as
After front serosity contains body, enter back into next serosity and contain body it is ensured that each serosity splendid attire body all can be filled.
Preferably, the two ends of the external side of described serosity splendid attire are connected on the tube wall of Grouting Pipe by binding strap.Ensure slurry
Liquid contains body closed at both ends it is ensured that serosity splendid attire body is propped up rear compacted surrounding sand bed by serosity.
It is further preferred that described serosity contains is provided with potted component between the two ends of external side and the tube wall of Grouting Pipe.
Make serosity contain body two ends to fully seal, serosity will not be occurred to reveal.
Set composite is noted to the brill of rich water sand bed grouting and reinforcing, including previously described grouting device, described Grouting Pipe is originally
Body one end connects drill bit；During drilling, described slip casting tube body the other end jointed rod；During slip casting, described slip casting tube body
The other end connects filling adaptor.The brill note compatibility of Grouting Pipe can be realized, can use as drilling rod in drilling, in slip casting
When complete slip casting, when Grouting Pipe drilling rich water sand bed is internal, serosity enters serosity by Grouting Pipe and contains body, and it is swollen that serosity contains body
Swollen country rock self-supporting effect dense extrusion realized to sand bed around, there is after grout cures higher-strength.
Preferably, described drill bit is taper four wing bit, and the tactical diameter of described drill bit is more than the external diameter that serosity contains body.
Make the aperture that drill bit creeps into can guarantee that Grouting Pipe, serosity contain body etc. and smoothly enter, avoid serosity to contain body and sand bed further
Friction.
Further, valve is set between described filling adaptor and slip casting tube body.Injected by Valve controlling serosity
Start and end.
Further, described filling adaptor connects pressure gauge.Slip casting overpressure situation can accurately be detected, reaching
Stop slip casting as early as possible, it is to avoid cause because pressure is excessive Grouting Pipe, serosity to contain body etc. and burst during pressure limit.
Preferably, also set up flushing three-way valve at described filling adaptor.Slip casting can be rinsed with clear water after the completion of slip casting
The structures such as joint.
Plug is set between described slip casting tube body and drill bit.Avoid serosity to be flowed out by drill bit, affect grouting consolidation effect.
The construction technology of set composite is noted to the brill of rich water sand bed grouting and reinforcing, comprises the following steps：
(1) setting position in note set composite drilling rich water sand bed will be bored, Grouting Pipe body end connects filling adaptor；
(2) start filling system, serosity is sequentially filled completely multiple serosity and contains body；In filling process, current serosity contains
When volume expansion is to extreme position, the check-valves between current Grouting Pipe and next Grouting Pipe are opened, and serosity is filled next serosity and contained
Dress body；
(3), before serosity enters next serosity splendid attire body, current serosity contains internal serosity to start to solidify, and serosity contains
Body will be compacted for surrounding rich water sand bed, forms compacted layer；
(4) repeat step (1)-(3), in rich water sand bed with quincuncial arrangement bore note set composite, mutually compacted layer it
Between cooperatively form overall compacted effect.
Preferably, described serosity is cement-water-clay system, the cement of described cement-water-clay system and waterglass
Volume ratio is 1:1-3:1.
The operation principle of the present invention is：
Grouting Pipe body end connects drill bit, and in drilling, slip casting tube body the other end jointed rod can achieve and bores
Hole；When boring carries out slip casting after terminating, slip casting tube body the other end connects filling system, and serosity enters slurry by slip casting tube body
Liquid contains body, and serosity contains body and then expands extruding serosity splendid attire body and sand bed about, makes loose sand bed compacted, rises
To country rock self-supporting effect.
Beneficial effects of the present invention are：
The present invention can realize the dense extrusion effect to rich water sand bed, improves the permeability of sand bed, reduce subsoil water and lead to
Cross the flow that sand bed enters in engineering, to ensure the normal fortune of safety in husky in the layer safe construction and engineering later stage for the engineering
Battalion.
The present invention passes through to bore note set composite, it is possible to achieve in the integration operation of sand bed internal drilling and grouting and reinforcing.
The present invention solves the slurry arteries and veins occurring after serosity enters into sand bed and infinitely extends to far-end in wire, and serosity is in boring
Surrounding is difficult to the technical barrier retained.
The present invention contains body to the collecting of serosity and itself expansion by serosity, has prevented serosity pair in former slip casting
The wire of the splitting of sand bed and slurry arteries and veins extends；Achieve target serosity being deposited in boring surrounding, and body is contained by serosity
Expansion, also reached the compacted effect to loose sand bed around boring.
The present invention has higher intensity because the serosity after expanding contains after the slurry consolidation of internal filling, can pass through many
Individual boring forms the country rock self-supporting system with higher-strength, and combines by compacted sand bed it is achieved that holing in span of control
The integrally-built stability of sand bed, decreases grouting and reinforcing body scope sand bed to the permeability peripherally descending water, is excavation project
Or the safety in the safe construction and operation of engineering projects of reinforcing engineering creates condition.
Brief description
Fig. 1 is to bore note set composite in sand bed internal drilling and scheme of installation；
Fig. 2 is compacted surrounding sand bed principle schematic by serosity filling and after expanding in slurry bag I；
Fig. 3 is compacted surrounding sand bed principle schematic by serosity filling and after expanding in slurry bag II；
Fig. 4 is compacted surrounding sand bed principle schematic by serosity filling and after expanding in slurry bag III；
Fig. 5 terminates its grouting and reinforcing rear and surrounding sand bed by compacted design sketch for single hole slip casting；
Fig. 6 is for sand bed entirety in all boring span of control by grouting and reinforcing and compacted effect sectional schematic diagram；
Fig. 7 is opened by high pressure serosity for check-valves and to grouting filling principle partial enlarged drawing in next slurry bag；
In figure, 1 Grouting Pipe, 2 borings, 3 slurry bags I, 4 adhesive waterproof tapes, 5 irony binding straps, 6 slurry bags II, 7 rich water sand beds, 8 slurries
Bag III, 9 taper four wing bits, 10 crags, 11 rapid hardening serosity, the serosity of filling, the slurry bag I after 13 expansions, 14 quilts in 12 slurry bags I
Compacted sand bed I, 15 check-valves I, 16 slurry outlets, 17 check-valves II, 18 plugs, the check-valves I that 19 open, fill in 20 slurry bags II
The serosity filled out, the slurry bag II after 21 expansions, 22 by compacted sand bed II, the check-valves II that 23 open, filling in 24 slurry bags III
Serosity, the slurry bag III after 25 expansions, 26 by compacted sand bed III, and 27 on the whole by compacted sand bed, the slurry of filling in 28 slurry bags
Liquid, 29 filling adaptors, 30 pressure gauges, 31 valves, 32 flushing threeways.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
The structure boring note set composite mainly includes：More piece Grouting Pipe 1；It is enclosed within every section Grouting Pipe 1, two ends are bound
In Grouting Pipe 1, after being filled with serosity, expansive serosity contains body (i.e. slurry bag I 3, slurry bag II 6, slurry bag III 8)；Slurry bag makes
Make tubbiness with cloth, two ends are bundled in Grouting Pipe, this, in when creeping into, is folded it and be attached in Grouting Pipe.Injection serosity
Afterwards, slowly can open, in slip casting, it can expand.
Contain internal injection for meeting to serosity, the slurry outlet 16 of cutting in every section Grouting Pipe 1；For preventing from entering into slurry
Liquid contains the loss of internal serosity, serosity is contained body two ends and is bundled in irony binding strap 5 and fluid sealant in Grouting Pipe 1；
It is located at and contains between the adjacent Grouting Pipe 1 of body containing serosity, meet the check-valves that different serosity contain physical ability order slip casting, only
Return valve and also function to prevent the effect of slurry reflux；The hard alloy taper four wing bit 9 that Grouting Pipe 1 front end is attached thereto；Slip casting
When be sequentially arranged at valve 31, pressure gauge 30 and filling adaptor 29 of Grouting Pipe 1 rear end etc.；For meeting drilling needs, serosity
Shape is attached to Grouting Pipe 1 surface in an overlapping to contain body, and is wound around anti-with cladding protection body (adopting adhesive waterproof tape 4 in the present embodiment)
Stop it and unclamp and destroyed.Herein for preventing from also not entering the slurry bag of slurry in drilling process by hole wall friction destruction, slurry bag
Twine jail on slip casting tube wall, and bundled with adhesive waterproof tape.Adhesive waterproof tape effect is that it has retractility, and when starching bag expansion
Can disconnect, not interfere with the expansion of slurry bag.Adhesive waterproof tape can be replaced with other materials.As long as binding can be played and can disconnect
Effect just.Plug 18 is set between Grouting Pipe 1 and taper four wing bit 9.
The making step boring note set composite is as follows：
1st, the needs to grouting and reinforcing depth according to design, select to bore the length of note set composite, Grouting Pipe specification
Material, is made up of several sections altogether, often the length (can also arrange a Grouting Pipe in the case of possible) of section Grouting Pipe 1；Correspond to
Often section Grouting Pipe 1 determines the length of slurry bag, the diameter after slurry bag expansion；The diameter of the slurry outlet 16 often cutting in section Grouting Pipe 1
And quantity；Slurry bag is from soft fine and close non-woven fabrics, and is sewn into cylindrical shape.
2nd, slurry bag I 3, slurry bag II 6, slurry bag III 8 etc. are enclosed within corresponding Grouting Pipe 1, and with irony binding strap 5 firmly
Slurry bag two ends are bundled in Grouting Pipe 1, before binding, fluid sealant can be added in slurry bag and Grouting Pipe 1 contact position.Slip casting process
In, the air in Grouting Pipe and slurry bag is discharged from slurry bagging material space by serosity.Fill liquid in slurry bag is required after tightening
When, the serosity that must not occur being injected in slurry bag under certain pressure intensity has leakage phenomenon at binding.After binding can with water or
Thin mud is tested to the binding quality of slurry bag.Then slurry bag is wrapped in Grouting Pipe 1, and is tightened with adhesive waterproof tape 4, make
Slurry bag attached tight in Grouting Pipe 1, adhesive waterproof tape 4 is starched in bag expansion process after slip casting and can be automatically pulled off.Slurry bag is required to bore
Can not occur unclamping disrepair phenomenon during in the hole drilling.
3rd, often section slurry bag and Grouting Pipe 1 bundle qualified after, connect Grouting Pipe 1, often save the adjacent Grouting Pipe 1 with slurry bag
Between check-valves to be installed, and with check-valves isolate adjacent Grouting Pipe 1 between connectedness.Check-valves can not reversely be installed.
4th, in Grouting Pipe 1 leading portion, according to the diameter of the slurry bag being wrapped in Grouting Pipe 1, select hard alloy taper four wing
The diameter of drill bit 9, and connect with Grouting Pipe 1 foremost.Plug 18 is installed between Grouting Pipe 1 and taper four wing bit 9.
5th, in addition only have boring to finish, valve 31 can be installed during slip casting in order, rinse threeway 32, pressure gauge 30 He
Filling adaptor 29 grade slip casting part.
So far, bore note set composite to complete.
Bore installation in boring for the note set composite：
1st, the Grouting Pipe 1 boring note set composite is connected on drilling rod, after drilling rod passes through rig gyroscope, is pressed from both sides with gyroscope
Hold drilling rod.Boring is aligned in being arranged on the hard alloy taper four wing bit 9 boring note set composite top by rig clamping
Perforate design attitude, corrected after Grouting Pipe axle center and drilling design angle overlap, started rig, rig drives drilling rod, note
Slurry pipe 1 turns round together with taper four wing bit 9, and taper four wing bit 9 creeps into required moment of torsion and pressure to be passed through to bore by rig
Bar and Grouting Pipe 1 pass to taper four wing bit 9.
2nd, creep in husky in the layer with taper four wing bit 9, the Grouting Pipe 1 being attached with slurry bag progresses into boring
Interior.After boring reaches projected depth, after so that all of Grouting Pipe with slurry bag is all introduced in boring, stop drilling, unload
Open the connection between Grouting Pipe 1 and drilling rod.During drilling construction, do not use flushing liquor.Because country rock is loose sand bed, no
Also enable smoothly to be arranged in boring boring note set composite using flushing liquor.
Bore grouting operation technique and its technical requirements of note set composite：
1st, it is arranged in boring and lays down after drilling rod boring note set composite, be exposed at the external end head outside boring in Grouting Pipe 1
Place is sequentially connected valve 31, rinses threeway 32, pressure gauge 30 and filling adaptor 29, by filling adaptor 29 and outside filling system
Connect.
2nd, start outside filling system, filling system passes through filling adaptor 29, Grouting Pipe 1 serosity, slurry outlet 16 injects
To in slurry bag I 3, the serosity amount with injection increases, and slurry bag I 3 slowly expands, with the increase of slurry bag entoplasm liquid measure, slurry
Liquid increases to the pressure of slurry bag I 3, and the slurry bag I 3 after expansion can outwards elapse the loose grains of sand about, thus compacted week
Enclose loose sand bed, sand bed is starched, and bag I 3 is compacted to be formed by compacted sand bed I 14.Inject into slurry bag I 3 during serosity it is desirable to stop
Return valve I 15 and remain closed mode.
3rd, after slurry bag I 3 expand into extreme position, the serosity in Grouting Pipe 1 can boost rapidly, the slurry of higher pressure after boosting
Liquid can open check-valves I 15, and serosity can enter in second section Grouting Pipe 1, and by the slurry outlet 16 in second section Grouting Pipe 1
Enter in slurry bag II 6, repeat slurry bag I 3 and expand and extrude the process of sand bed around.In fact, entering next slurry in serosity
During bag, the serosity in current slurry bag has begun to solidify, and will not be flow backwards into Grouting Pipe by slurry outlet, thus after ensureing to expand
Slurry bag will not shrink.
4th, same, after slurry bag II 6 expand into the limit and pressure rising, serosity can open check-valves II 17, and serosity passes through note
Slurry outlet 16 on slurry pipe 1 and Section three Grouting Pipe 1 enters in slurry bag III 8, and slurry bag III 8 reaches to starching bag III 8 weeks after expanding
Enclose the compacted effect of sand bed.
5th, pass through to install in intensive multiple borings to bore note set composite slip casting, reach and whole design borings are controlled
In the range of the overall ground extruding effect of sand bed.By the entirety to sand bed is compacted and slurry bag in intensity higher after slurry consolidation
The self-supporting tendency being formed, realizes the target of the smooth excavation of engineering safety or surrounding rock consolidation.
Grouting operation technological requirement is as follows：
1st, screwed connection mode to be adopted between Grouting Pipe 1.Increase with drilling depth, according to slurry bag III 8, slurry bag II 6
With slurry being sequentially connected with of bag I 3, and it is installed in order in boring.
2nd, drill bit tactical diameter have to be larger than the diameter of the slurry bag being wrapped in Grouting Pipe 1, and otherwise slurry bag can holed
Destroyed in journey.
3rd, before boring note set composite and being admitted to boring, the swell diameter of slurry bag, under much pressure, slurry bag will not be destroyed,
And after irony bandage is bundled in Grouting Pipe to bag cylinder two ends, how much pressure No leakage etc. will pass through experiment really at the scene
Fixed, to determine serosity filling pressure peak and slurry bag limit of expansion pressure values in slurry bag.
4th, the limit of expansion pressure that pressure will slightly higher than starch bag opened by the steel ball of check-valves.Preventing slurry bag does not also have
When being expanded completely by serosity filling, check-valves are opened, and cause to starch bag to another slurry bag internal leakage, and to sand bed around
Compacted effect does not reach requirement.
5th, slurry bag in injection serosity be rapid hardening serosity, can be dual slurry can also be single slurry.But no matter which adopts
Plant serosity, the control to the presetting period of serosity determines it is necessary to test at the scene.Principle is that serosity is before entry in order
The slurry bag in face after making slurry bag expand completely, can consolidate molding within a short period of time, only open after preventing serosity boosting
When returning valve, the serosity in slurry bag is flowed back by slurry outlet, the retraction of the slurry bag after causing to expand.To injection serosity pre-hardening when
Between requirement be by smooth filling in last slurry bag, after expanding completely, the serosity entering in all slurry bags are not in
Backflow phenomenon, and reach curdled appearance within a short period of time.
Embodiment：Encounter rich water drift sand formation in the advanced curtain-grouting of No. 2 line sections of Qingdao region, bore in rich water sand bed
In the construction of hole, occur in that water spray phenomenon in boring, gush out containing a large amount of grains of sand in water.Using conventional by the slurry injecting of holing
Liquid is difficult to retain around boring, and when boring again in same boring, same position the retention of excessive fluid phenomenon that sandblasts repeatedly.Scene
It was verified that being difficult to prove effective in rich water sand bed using traditional grouting and reinforcing scheme.And the test slip casting chosen at the scene
During section is excavated, find that the serosity of boring injection is in wire to deepening around it is difficult to form the grouting and reinforcing body of larger area.Serosity
All it is lost to far-end in splitting mode.And loose sand bed is not formed with effectively compacted effect.For this because slip casting
Effect is poor, and almost again without self-stable ability, slightly disturbance arises that and caves in the sand bed after slip casting, sprays with retention of excessive fluid therewith
Go out.
Research and probe repeatedly through repetition test with to slip casting principle in sand bed at the scene, invention implements the compound dress of brill note
Put and achieve the effective reinforcing to sand bed, obtain satisfactory slip casting effect.
In conjunction with the drawings and specific embodiments, the present invention is further described：
1st, grouting and reinforcing design in the rich water sand bed 7 according to test adjustment, boring 2 projected depths are 9m, and rich water is husky
Slurry bag I 3, slurry bag II 6 and the slurry a diameter of 180mm of bag III 8 limit of expansion in grouting test in layer 7, rich water sand bed 7 can be squeezed
Close thickness is 0.2m；Therefore according to slip casting ability needs, select using three section Grouting Pipe 1, often section Grouting Pipe 1 length is 3m；
Therefore often section slurry bag expansion length is 2.5m, and each reserved 250mm in two ends is as the part tying up slurry bag with irony binding strap 5；Note
Φ 42mm seamless steel pipe selected by slurry pipe 1, and often on section Grouting Pipe 1 tube wall, the part being included in slurry bag processes going out of a diameter of 8mm
Slurry hole 16, slurry outlet 16 spacing 0.2m is uniform；Slurry bag expanded diameter is 180mm；According to live grouting test it is desirable to slurry bag is tied
The pressure No leakage of 3.0Pa, no disrepair phenomenon can be born after bundle；Require check-valves I 15, check-valves II 17 in 3.2～3.5MPa
Between serosity pressure under can open；Serosity pressure can be controlled by observing the reading of pressure gauge 30.Check-valves I 15, only
The diameter returning valve II 17 is consistent with Grouting Pipe 1, and it passes through screwed connection and Grouting Pipe 1 between；Slurry bag is attached to corresponding Grouting Pipe 1
Upper and when being tied up with adhesive waterproof tape 4, slurry bag cylinder tightly covers on slip casting tube wall to left hand direction overlap, and with adhesive waterproof tape 4
Colligation, adhesive waterproof tape 4 tie up direction with slurry bag Direction of superposition consistent, prevent bundle after slurry bag boring 2 in Grouting Pipe the right side
To revolution when by hole wall friction destruction.
2nd, through measurement, slurry bag I 3 after tying up, slurry bag II 6 and slurry bag III 8 diameter are between 125-137mm, therefore select rule
Lattice are the hard alloy taper four wing bit 9 of diameter 150mm, and hard alloy taper four wing bit 9 directly connects with Grouting Pipe 1,
Before connection, plug 18 is installed between Grouting Pipe 1 and hard alloy taper four wing bit 9.
3rd, the Grouting Pipe 1 boring note set composite and the drilling rod being located in rig gyroscope chuck are connected, chuck of rig card
After living drilling rod, by rig, hard alloy taper four wing bit 9 center boring note set composite front end is aligned on crag 10 and sets
The boring hole position central point of meter, adjust drilling rod and Grouting Pipe 1 angle meet drilling design angle after, start rig revolution,
Moment of torsion required for hard alloy taper four wing bit 9 and pressure, pass through drilling rod by rig and Grouting Pipe 1 are transmitted.Hard alloy
Taper four wing bit 9 turns round and under the pressure action of Grouting Pipe 1 transmission, creeps in rich water sand bed 7, and drilling depth is 9.5m
Afterwards, stop drilling, now bore note set composite and be all arranged in boring 2.
4th, dismantle drilling rod and the junction of Grouting Pipe 1, be sequentially connected valve 30 in Grouting Pipe one end of this junction, rinse
The high-pressure rubber pipe that threeway 32, pressure gauge 30 and filling adaptor 29, filling adaptor 29 and external filling system connect connects, external note
Slurry system includes grouting pump and high-pressure rubber pipe.Connect after finishing, start grouting pump, the rapid hardening serosity 11 preparing is passed through slip casting
Joint 29 and Grouting Pipe 1 are implanted sequentially in the slurry bag of diverse location.
5th, rapid hardening serosity 11 can be entered by the slurry outlet 16 on filling adaptor 29, first segment Grouting Pipe 1 and its tube wall first
Enter in slurry bag I 3, the serosity amount with injection increases, slurry bag I 3 slowly expands, after serosity is persistently injected, in pressure
Pretend under using, in slurry bag I, the serosity 12 of filling can make slurry bag I 3 prolonged expansion, and the adhesive waterproof tape 4 outside slurry bag I 3 is pulled off, swollen
After swollen slurry I 13, the bag loose grains of sand about outwards elapse, thus compacted around sand bed, formed by compacted sand
Layer I 14.Rapid hardening serosity 11 be injected into slurry bag I 3 in, when reaching its presetting period in time, the rapid hardening serosity meeting of injection
Gradually consolidate, the serosity after consolidation is difficult to flow back, cause the slurry bag I 3 after expansion will not shrink, keep persistently squeezing to sand bed
Pressure；
6th, slurry bag I 3 expand into after its extreme position fully expands, and rapid hardening serosity 11 is difficult to go successively to, and now first
Serosity pressure in section Grouting Pipe 1 can raise rapidly, and the serosity after boosting can wash check-valves I 15 open, and serosity is through stopping of opening
Return valve I 19 to enter in second section Grouting Pipe 1, enter in slurry bag II 6 by the slurry outlet 16 in second section Grouting Pipe 1, slurry
In bag II, the serosity 20 of filling can make slurry bag II 6 expand, and the adhesive waterproof tape 4 outside slurry bag II 6 is pulled off, the slurry bag II after expansion
Sand bed around 21 extruding, forms by compacted sand bed II 22.Equally, after slurry bag II 6 expand into extreme position, serosity is difficult to continue
Enter, now the serosity in second section Grouting Pipe 1 can boost rapidly, and after boosting, the serosity of higher pressure can wash check-valves II open
17, the check-valves II 23 that serosity passes through to open enter in Section of three Grouting Pipe 1, enter into slurry bag by this part slurry outlet 16
In III 8, in slurry bag III 25, the serosity 24 of filling can make slurry bag III 8 expand, and the adhesive waterproof tape 4 outside slurry bag III 25 is pulled off, swollen
Sand bed around slurry bag III 25 extruding after swollen, forms by compacted sand bed III 26.
Now it is increased to after the ultimate value that slurry bag III 8 expands after pressure, stops slip casting, close grouting pump, close Grouting Pipe 1
The valve 30 of outer end.Open the flushing threeway 32 being connected with valve 30 as early as possible, start grouting pump clear water and rinse external slip casting system
System and the serosity rinsing residual inside threeway 32 outer end pipeline.After rinsing, dismantle between flushing threeway 32 and valve 30.
The single hole grouting and reinforcing process being carried out by boring note set composite is fully completed.
7th, according to testing the slurry bag limit of expansion diameter drawing and sand bed by compressed thickness, design spacing between inlet well
For 0.4m, boring is in quincuncial arrangement.After boring all construct and slip casting terminates, the serosity 28 starching filling in bag solidifies, and reaches
Arrive the overall grouting and reinforcing of sand bed and the compacted effect to the region that boring controls, formed on the whole by compacted sand bed 27.
8th, repeatedly tested according to scene, for ensureing slip casting safety and grouting consolidation effect, select to employ cement-sodium silicate
Dual slurry.Cement grade is 42.5R, and cement mortar (A liquid) density domination is in 1.50-1.55g/cm3Between.Waterglass (B liquid) mould
Numerical control system is in 2.6-2.8.Concentration is between 38-40Be.Cement mortar (A liquid) and waterglass (B liquid) volume ratio are 3:1, real
Testing under this parameter mixed rapid hardening serosity 11 presetting period is 30 seconds.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not model is protected to the present invention
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay the various modifications that creative work can make or deformation still within protection scope of the present invention.
Claims (10)
1. the grouting device of pair rich water sand bed grouting and reinforcing, is characterized in that, including slip casting tube body, described slip casting tube body is by many
Section Grouting Pipe connects successively and forms, and each described Grouting Pipe is arranged with expandable serosity outside tube wall and contains body, described note
The tube wall of slurry pipe is provided with multiple slurry outlets at body cooperation containing with serosity, and serosity enters serosity from the slurry outlet of Grouting Pipe and contains
Body makes serosity contain the compacted serosity of volume expansion and contains body and sand bed about.
2. grouting device as claimed in claim 1, is characterized in that, described serosity contains external body and is wound with cladding protection body；
Preferably, described cladding protection body twist.
3. grouting device as claimed in claim 1, is characterized in that, is provided with check-valves between the described Grouting Pipe of adjacent segments.
4. grouting device as claimed in claim 1, is characterized in that, described serosity contains the two ends of external side by binding strap even
It is connected on the tube wall of Grouting Pipe.
5. grouting device as claimed in claim 4, is characterized in that, described serosity contains the two ends of external side and the pipe of Grouting Pipe
It is provided with potted component between wall.
6. the brill note set composite of pair rich water sand bed grouting and reinforcing, is characterized in that, including the note described in any one of claim 1-5
Sizing device, described slip casting tube body one end connects drill bit；During drilling, described slip casting tube body the other end jointed rod；Note
During slurry, described slip casting tube body the other end connects filling adaptor.
7. set composite as claimed in claim 6, is characterized in that, described drill bit be taper four wing bit, described drill bit return
Turn the external diameter containing body with diameter greater than serosity；Plug is set between described slip casting tube body and drill bit.
8. set composite as claimed in claim 6, is characterized in that, arranges valve between described filling adaptor and slip casting tube body
Door；Pressure gauge is connected on described filling adaptor；Preferably, also set up flushing three-way valve at described filling adaptor.
9. the construction technology of the set composite as described in claim 6-8, is characterized in that, comprises the following steps：
(1) setting position in note set composite drilling rich water sand bed will be bored, Grouting Pipe body end connects filling adaptor；
(2) start filling system, serosity is sequentially filled completely multiple serosity and contains body；In filling process, it is swollen that current serosity contains body
Swollen to extreme position when, check-valves between current Grouting Pipe and next Grouting Pipe are opened, and serosity is filled next serosity and contained body；
(3), before serosity enters next serosity splendid attire body, current serosity contains internal serosity to start to solidify, and serosity contains body will
Surrounding rich water sand bed is compacted, forms compacted layer；
(4) repeat step (1)-(3), bore note set composite with quincuncial arrangement in rich water sand bed, join between mutually compacted layer
Close and form overall compacted effect.
10. construction technology as claimed in claim 9, is characterized in that, described serosity is cement-water-clay system, described cement-
The volume ratio of the cement of waterglass serosity and waterglass is 1:1-3:1.
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| CN108708240A (en) * | 2018-08-14 | 2018-10-26 | 上海力阳道路加固科技股份有限公司 | The brill note integration apparatus and construction method reinforced for roadbase |
| CN109098688A (en) * | 2018-10-15 | 2018-12-28 | 山东交通学院 | Soft aggregate anti-blocking construction technology safely in a kind of down-hole extra-deep hole drilling |
| CN110259383A (en) * | 2019-07-04 | 2019-09-20 | 山东大学 | A kind of protrusive bores note integrated device and application method |
| CN110778332A (en) * | 2019-10-16 | 2020-02-11 | 山东大学 | Reducing self-adaptive expansion grouting device for cracked and damaged part of secondary lining of tunnel and reinforcing method |
| CN110878698A (en) * | 2019-11-22 | 2020-03-13 | 北京金河水务建设集团有限公司 | Construction process for grouting behind expansion joint |
| CN112982368A (en) * | 2021-02-02 | 2021-06-18 | 中铁工程设计咨询集团有限公司 | Underpass railway roadbed grouting device and grouting method thereof |
| CN113482651A (en) * | 2021-07-19 | 2021-10-08 | 中煤地质集团有限公司 | A drilling device of removing obstacles for mine rescue |
| CN114251108A (en) * | 2021-12-23 | 2022-03-29 | 枣庄学院 | Rapid grouting hole sealing device for tunnel lining structure and using method |
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| CN108708240A (en) * | 2018-08-14 | 2018-10-26 | 上海力阳道路加固科技股份有限公司 | The brill note integration apparatus and construction method reinforced for roadbase |
| CN109098688A (en) * | 2018-10-15 | 2018-12-28 | 山东交通学院 | Soft aggregate anti-blocking construction technology safely in a kind of down-hole extra-deep hole drilling |
| CN109098688B (en) * | 2018-10-15 | 2020-07-07 | 山东交通学院 | Safe anti-blocking construction process for soft aggregate in underground ultra-deep drill hole of mine |
| CN110259383B (en) * | 2019-07-04 | 2020-05-26 | 山东大学 | Advancing drilling and grouting integrated device and using method |
| CN110259383A (en) * | 2019-07-04 | 2019-09-20 | 山东大学 | A kind of protrusive bores note integrated device and application method |
| CN110778332A (en) * | 2019-10-16 | 2020-02-11 | 山东大学 | Reducing self-adaptive expansion grouting device for cracked and damaged part of secondary lining of tunnel and reinforcing method |
| CN110878698A (en) * | 2019-11-22 | 2020-03-13 | 北京金河水务建设集团有限公司 | Construction process for grouting behind expansion joint |
| CN110878698B (en) * | 2019-11-22 | 2022-04-05 | 北京金河水务建设集团有限公司 | Construction process for grouting behind expansion joint |
| CN112982368A (en) * | 2021-02-02 | 2021-06-18 | 中铁工程设计咨询集团有限公司 | Underpass railway roadbed grouting device and grouting method thereof |
| CN112982368B (en) * | 2021-02-02 | 2022-04-19 | 中铁工程设计咨询集团有限公司 | Underpass railway roadbed grouting device and grouting method thereof |
| CN113482651A (en) * | 2021-07-19 | 2021-10-08 | 中煤地质集团有限公司 | A drilling device of removing obstacles for mine rescue |
| CN113482651B (en) * | 2021-07-19 | 2023-08-22 | 中煤地质集团有限公司 | Drilling obstacle-removing device for mine rescue |
| CN114251108A (en) * | 2021-12-23 | 2022-03-29 | 枣庄学院 | Rapid grouting hole sealing device for tunnel lining structure and using method |
| CN117108310A (en) * | 2023-08-17 | 2023-11-24 | 中煤科工开采研究院有限公司 | Back-type continuous advanced grouting device and application method thereof |
| CN117108310B (en) * | 2023-08-17 | 2024-05-07 | 中煤科工开采研究院有限公司 | Back-type continuous advanced grouting device and application method thereof |
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