CN109162660A - Interior anchor formula orifice closing device - Google Patents
Interior anchor formula orifice closing device Download PDFInfo
- Publication number
- CN109162660A CN109162660A CN201811276361.3A CN201811276361A CN109162660A CN 109162660 A CN109162660 A CN 109162660A CN 201811276361 A CN201811276361 A CN 201811276361A CN 109162660 A CN109162660 A CN 109162660A
- Authority
- CN
- China
- Prior art keywords
- hole
- overfall
- compressing member
- cover
- orifice closing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003825 pressing Methods 0.000 claims abstract description 45
- 239000002002 slurry Substances 0.000 claims abstract description 41
- 238000004873 anchoring Methods 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 239000011440 grout Substances 0.000 claims description 31
- 208000005189 Embolism Diseases 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 13
- 230000006978 adaptation Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000007596 consolidation process Methods 0.000 abstract description 17
- 239000008267 milk Substances 0.000 abstract description 6
- 210000004080 milk Anatomy 0.000 abstract description 6
- 235000013336 milk Nutrition 0.000 abstract description 6
- 239000011435 rock Substances 0.000 description 49
- 230000000694 effects Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 17
- 238000009434 installation Methods 0.000 description 11
- 239000004567 concrete Substances 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000010412 perfusion Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000003487 anti-permeability effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 230000010410 reperfusion Effects 0.000 description 3
- 241000169624 Casearia sylvestris Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000937378 Everettia interior Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003073 embolic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of interior anchor formula orifice closing devices, it is related to geotechnical engineering field, the technical issues of solution, is to provide a kind of for consolidation grouting, can effectively pour opening for accessing section the orifice closing device that is in the milk again of uncovered, the technical solution adopted is that: interior anchor formula orifice closing device, including into overfall component, anchoring assembly in orifice closing component and hole, it include Grout-jetting pipe and overfall cover into overfall component, Grout-jetting pipe is divided into hole outer segment and hole inner segment, it is slurry intake at the top of the outer segment of hole, anchoring assembly in slurry outlet and connecting hole is arranged in hole inner segment, overfall cover is anchored on the position between hole outer segment and hole inner segment, overfall channel is set in overfall cover；Orifice closing component includes compressing member, pressing plate and sealed bolster plate, and overfall cover and compressing member are threadedly engaged and are formed nut-bolt type structure, and pressing plate and sealed bolster plate are placed on outside overfall cover.Downward turn-knob compressing member, pressing plate compress sealed bolster plate, can closed orifices；Turn-knob unclamps compressing member, and sealed bolster plate disengages, detachable to remove grouting pressure.
Description
Technical field
The present invention relates to Geotechnical Engineering field, the dress of closed orifices when especially a kind of country rock or ground consolidation are in the milk
It sets.
Background technique
The bearing capacity and anti-permeability performance of country rock are improved, by consolidation grouting to realize pressure pipeline steel lining-backfill coagulation
Soil-country rock coaction is the significant design of land burial formula steel lining pressure pipeline to achieve the purpose that reduce steel lining thickness
Thinking and conventional design method.But the raising of bearing capacity of the wall rock and anti-permeability performance must rely on its expected consolidation grouting
Effect ensures.
In order to ensure the quality of country rock consolidation grouting, reach the desired effect for improving country rock elastic resistance and anti-permeability performance,
Country rock consolidation grouting technique that is current mature and usually using is exactly: after steel lining installation and periphery fill concrete pour,
Pressure pipeline internal drilling, drills through steel lining and fill concrete, to implement country rock lid weight consolidation grouting.
For the steel lining pressure pipeline for less (being no more than 30mm) using regular tenacity (such as Q235 or Q345) and thickness
For, directly bore grout hole on steel lining after steel lining installation, or in steel lining production reserving hole as drilled grout hole
Guide hole is all feasible.But for using high-intensitive (intensity 600MPa or higher intensity) or big thickness (36mm or thicker)
Plate-steel liner pressure piping, especially radius-thickness ratio (the ratio between internal diameter/wall thickness) lesser pressure piping, in the volume of production steel lining
Plate, group justify, can generate biggish circumferential tensile stress in welding process, and aperture will generate huge on making molding steel lining tube coupling
Big stress is concentrated, so that the risk of steel plate cracking occurs near aperture, even if in the outer wall at aperture position when making steel lining
It adds reinforcement steel plate and is also difficult to decrease the concentration of stress caused by aperture.Meanwhile on steel lining grouting hole plugging secondary welding also
Further stress can be caused to concentrate, if groundwater pressure is larger, grouting hole plugging difficulty is may cause, form grout hole
Penetrating passage.In this case, usually use in steel lining installation and after periphery fill concrete pours, then the implementation that drills is enclosed
The operational procedure of rock consolidation grouting can not just implement.Therefore, construction operation sequence is only switched, i.e., first implements country rock consolidation and fills
Slurry installs steel lining again and pours periphery fill concrete, is just avoided that boring grout hole on high-intensitive or big thickness steel plate is drawn
The risk of the steel plate cracking risen.
Nongravity capping concretion grouting has been successfully applied to the strengthening of foundation of the dams such as Ru Ertan, Goupitan, small stream Luo Du, and
Obtained in the diversion tunnel country rock consolidation grouting of Yalongjiang River Jinping hydropower station using.These dam foundations or Wall Rock of Tunnel are equal
For middle hard rock~hard rock, rock mass is more complete, and joint fissure agensis or slight development are in the milk using traditional aperture Blocking Method
Technique.Since rock-mass quality is good, aperture position rock mass is more complete, and embolism can be fixed in aperture, and the rock mass of aperture periphery will not
Because the radial pressure of embolism expansion or the axial thrust of reperfusion serosity generate destruction.But since embolism seals its fixed part
The hole wall crack of position causes the aperture section (about 30~50cm) isometric with embolism not to be perfused directly.However, exactly country rock is most
Surface layer is exhumed by blast disturbance and excavation, and Unloading Effect is the most obvious, and the relief joint that aperture section generates comes with greater need for grouting
Filling, so this is the significant deficiency of aperture Blocking Method grouting process.
But joint fissure is non-rigid compared with development~intense development, is relatively crushed~breaks if steel lining pressure pipeline is located at
In detritus body, the surface layer country rock at aperture position can bear embolism expansion radial pressure and slurry filling axial thrust and
Destruction is not generated, i.e., it is that must be accorded to the problem of paying high attention to that can embolism, which steadily " be stuck in aperture ",.In order to provide foot
For enough frictional resistances to be securely fixed embolism, reducing embolism swelling stress by increasing plug length is technical feasibility and operation
Simple method, but this will lead to longer aperture section and is unable to get direct perfusion, lead to the relief joint on country rock most surface layer not
Energy filling is closely knit, and consolidation grouting is unable to reach desired effect.
In the case history for successfully using nongravity capping concretion grouting, either Consolidotion Grouting in Dam Foundation or tunnel encloses
Rock consolidation grouting, rock mass are middle hard rock or hard rock, and joint fissure agensis or slightly development, structure is more complete~complete,
Embolism can be fixed in aperture and keep stablizing during cementing operations.For the crack for preventing grouting slurries from opening from surface
Middle string leak goes out, and keeps grouting pressure and reaches ending standard, Wall Rock of Tunnel generally takes m esh-hanging sprayed concrete to close rock
The processing method on surface, dam foundation is then taken first blocks foundation plane crack open comprehensively with pointing, in filling process
The range of scatter or speed, interval perfusion for taking pressure-limit current-limit control slurries gradually fill and rapid hardening caulking material are cooperated to block less
The measure for the surface crack open that string leak goes out occurs for number.Although the aperture section at embolism position cannot be directly perfused,
After taking above-mentioned measure, can in the case where not occurring or occurring acceptable a small amount of surface spillage, step up to
Design grouting pressure reaches ending standard and smoothly completes grouting.Hair is locally checked because not being perfused directly for surface layer
Existing position off quality is made up by augmenting a small amount of grout hole implementation lid weight consolidation grouting, can reach expected
Grouting effect.
But for pressure pipeline country rock nongravity capping concretion grouting non-rigid, in relatively broken~fragmented rock body, if still
Traditional aperture Blocking Method grouting process is so used, due to ROCK MASS JOINT cranny development, lithology is weaker and integrality is poor, will
Two aspects can be faced and be difficult to the problem overcome:
On the one hand, since rock bearing capacity is low, in order to provide frictional resistance required for the axial thrust for resisting reperfusion serosity
Power simultaneously prevents aperture hole wall rock from squeezing destruction, cannot be suitable for by increasing the expansion of embolism and be allowed to generate between hole wall
Stress is radially contacted with, plug length can only be increased, increases radial normal pressure by enlarged contact areas.This will will lead to longer
, need most and closely knit aperture section is filled into crack be unable to get direct perfusion, cause country rock consolidation grouting to be difficult to reach expected
Effect, surface quality check that underproof situation high-frequency occurs.If encrypting grouting treatment by supplement hole, not only increase expense
With, extend the duration, and may not necessarily achieve the desired results.
On the other hand, since shear of rock intensity is low, with being stepped up for slurry pressure, slurries push away the axial direction of embolism
Continuous increasing is insisted on, aperture periphery rock is due to the shear action by embolism axial thrust, it may occur that shearing (upper lift) is broken
It is bad, cause embolism to lose fixed basis, cementing operations can not normally be implemented.
It is difficult to the problem overcome based on above-mentioned two aspect, country rock uncovered is implemented using traditional plunger type embolic occlusive aperture
The construction technology of weight consolidation grouting, it is difficult to or even it is unable to reach desired effect.In order to ensure complete opening especially surface layer aperture section energy
Effective perfusion is accessed, so that fracture filling is closely knit, the best way is to implement to be in the milk from surface-closed aperture.
Traditional orifice closing method grouting process is suitable for the high pressure deep hole grout curtain of dam foundation and its two sides massif,
In filling process, slurries out of, Grout-jetting pipe access aperture that protrude into bottom hole, in hole in uphill process a part through hole wall into
Enter crack, another part is then returned from aperture.Orifice closing method grouting process is needed using orifice closure, orifice closure packet
The connector with movable sealing is included, connector connect with steel orifice tube, pressure slurries are acted on orifice closure
Axial thrust passes to steel orifice tube.The general castingin of steel orifice tube is in lid loaded concrete, when lid loaded concrete is relatively thin
It then passes through lid loaded concrete and gos deep into first grouting hole section.But for the nongravity capping concretion grouting of steel lining pressure pipeline country rock
For, due to there is no orifice tube fixed orifice sealer and bearing the axial thrust of reperfusion serosity, traditional orifice closing
Device is not available.
If guaranteeing entire hole section, especially surface layer hole section can be directly perfused and be filled up completely crack, most be had
The measure of effect is " to cover " aperture from country rock surface to implement perfusion.For this reason, it may be necessary to design and make a kind of similar " seal closure "
Utensil is closely connected " to cover in aperture " in aperture periphery.This " seal closure " should be able to Fast Installation be in place as embolism and tears open
It moves, the rock surface at aperture position can either be conveniently fixed in, be still able to maintain and rock under the jacking force effect of grouting slurries
" closely connected " state and slurries on stone surface will not leak outside." seal closure " should be able to also be removed quickly and be transferred to other grout holes again
Easily installation is in place.
Based on that Fast Installation and can tear open and move this precondition, any need relies on the structures or additional of borehole circumference
Facility come realize other measures of orifice closing be unable to reach orifice closure Fast Installation and tear shifting open.If relying on drilling
The structures on periphery, for big cross section cavern, connector is long and weight is larger, it is manually installed and tear open move it is extremely difficult, rely on
Equipment is operated in pressure pipeline and is also very inconvenient；For light section cavern, connector will inevitably be occupied inherently
Very narrow pressure pipeline inner space or even occluding pressure pipeline, it is difficult not only to cause to pass through, it is also possible to cause cementing operations
Operations can not normally, easily carry out.Meanwhile the drilling for different location, the size of connection is different, and
And the installation and dismounting of connector require to expend longer time.If each drilling is both needed to be arranged using additional facilities,
Not only heavy workload increase expense is more, and construct and remove the spent time may than the normal grouting operation time also than
It is long.Therefore, realize that orifice closing just becomes selection the most reasonable by drilling and utensil itself.
It realizes orifice closing, orifice closure must be just firmly secured to aperture, and can begin in filling process
It keeps eventually closely connected without spillage with aperture scar.If orifice closure just can only be by drilling not against any additional facilities
To fix.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to be used for consolidation grouting, can effective pour opening for accessing section uncovered
The interior anchor formula orifice closing device being in the milk again.
The technical solution adopted by the present invention to solve the technical problems is: interior anchor formula orifice closing device, including into overfall
Anchoring assembly in component, orifice closing component and hole, includes Grout-jetting pipe and overfall cover into overfall component, and Grout-jetting pipe includes for revealing
In the hole outer segment outside grout hole and the hole inner segment for being inserted into grout hole, at the top of the outer segment of hole for for connect inlet pipe into slurry
Mouth, overfall cover are anchored on the position between hole outer segment and hole inner segment, the overfall mouth for connecting return pipe are arranged on the outside of overfall cover,
External screw thread is arranged in the outer wall of overfall cover, at least one slurry outlet, anchor in the end connecting hole of hole inner segment is arranged in the tube wall of hole inner segment
Gu component；
Orifice closing component includes compressing member, pressing plate and sealed bolster plate, the external screw thread of setting and overfall cover on the inside of compressing member
The internal screw thread of adaptation, compressing member are threadedly connected to and outside overfall cover and form nut-bolt type structure；Compressing member is by anchor in adjacent pores
Gu the side setting pressing plate and sealed bolster plate, pressing plate and sealed bolster plate of component are placed on outside overfall cover.
Further, also setting up sealing element between the compressing member and pressing plate.Specifically, the sealing element are as follows: setting
Elastic washer between compressing member and pressing plate and/or the rigid washer with sealing ring.
Further, the outside weldering in at least one set of face or compressing member being parallel to each other of outside setting of the compressing member
Connecting handle in succession, and the direction of handle and the axis direction of Grout-jetting pipe are mutually perpendicular to.Specifically, the compressing member be sleeve or
Nut, the outer profile in compressing member cross section are in regular hexagon.
Specifically, the Grout-jetting pipe is steel pipe, that the end setting of the grouting hole section of steel pipe is connect with anchoring assembly in hole,
The connector of adaptation.
Further, the slurry outlet is set to the end point of grouting hole section, slurry outlet is 1~4.
Further, the sealed bolster plate is adhered to pressing plate back to the one side of compressing member.
Further, anchoring assembly is cylindrical in the hole, the diameter of the outer diameter of overfall cover than anchoring assembly in hole
The diameter of small 4~6mm, pressing plate and sealed bolster plate is 2~3 times of the diameter of anchoring assembly in hole.
Specifically, anchoring assembly is columned expansion and shrinkage type embolism in the hole, compressing member and pressing plate are iron and steel material quality,
Sealed bolster plate is rubber material.
The beneficial effects of the present invention are: anchoring assembly is fixed on the surface layer hole section of grout hole hereinafter, overfall cover fastens in hole
On the outside of Grout-jetting pipe, compressing member is connected by Grout-jetting pipe with anchoring assembly in hole, and seal assembly is located at the country rock in grout hole aperture
Surface.Downward turn-knob compressing member, makes pressing plate compress sealed bolster plate, and sealed bolster plate is made to be close to the country rock surface in aperture with blind hole
Mouthful, avoid grouting pressure effect from issuing raw pulp liquid leakage.Upward turn-knob unclamps compressing member, and sealed bolster plate can be made to disengage enclosing for aperture
Rock surface, with removal grouting pressure.The pressing force of interior anchor formula orifice closing device be derived from Grout-jetting pipe anchor force, it is non-rigid,
Nongravity capping concretion grouting is carried out in pressure pipeline country rock in relatively broken~fragmented rock body, there is no need to rely on the structure of borehole circumference
Object or additional facilities are built to realize orifice closing, but by realizing orifice closing by orifice closing device itself, it simplifies
It is in place and tear shifting open that Fast Installation may be implemented in the structure composition of interior anchor formula orifice closing device.Interior anchor formula orifice closing device is not
It is only capable of being conveniently fixed in the rock surface at aperture position, be still able to maintain and rock surface under the jacking force effect of grouting slurries
" closely connected " state and slurries will not leak outside, moreover it is possible to quickly remove and be transferred to other grout holes easily installation is in place again,
Reach expected grouting effect.
Sealing element is set between compressing member and pressing plate, enhances obturation effect, avoids between compressing member and orifice closing component
In consolidation grouting, slurries are leaked.
The outside in at least one set of face or compressing member being parallel to each other of outside setting of compressing member is welded to connect handle, so just
In pulling compressing member by pipe wrench, or compressing member is directly rotated by handle, and then adjust pressing force size.
Grout-jetting pipe is steel pipe, has both the effect of connecting rod, for example, seamless steel pipe of heavy wall, the specification of seamless steel pipe by
Its maximum pull born, i.e., slurries calculate the maximum axial thrust of aperture closed component and determine under grouting pressure.
Slurry outlet is set to the end point of the grouting hole section of Grout-jetting pipe, enters slurries, along grout hole from grout hole bottom hole
Rise, and circulation is returned to by the overfall channel in overfall cover in aperture, to reach expected grouting effect.
Detailed description of the invention
Fig. 1 is structural schematic diagram when anchor formula orifice closing device is in the milk in the present invention.
Components, position and number in figure: Grout-jetting pipe 1, compressing member 2, anchoring assembly 3 in hole, pressing plate 4, sealed bolster plate 5,
Overfall cover 6, overfall mouth 7, grout hole 8, country rock surface 9, slurry intake 10, slurry outlet 11.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, anchor formula orifice closing device in the present invention, including into overfall component, orifice closing component and hole
Anchoring piece 3, includes Grout-jetting pipe 1 and overfall cover 6 into overfall component, and Grout-jetting pipe 1 includes for being exposed to outside the hole in 8 aperture of grout hole
Section and the hole inner segment for being inserted into grout hole 8, hole outer segment top are the slurry intake 10 for connecting inlet pipe.Overfall cover 6 fastens
Position between hole outer segment and hole inner segment, i.e. 6 upper end of overfall cover are located at hole outer segment, and 6 lower end of overfall cover is located at hole inner segment.Overfall
Fastening and closed, also settable sealing ring between overfall cover 6 and Grout-jetting pipe 1, to guarantee obturation effect between cover 6 and Grout-jetting pipe 1.
At least one slurry outlet 11, such as 1~4 slurry outlet 11 of setting is arranged in hole inner segment.Slurry outlet 11 is preferably arranged at grouting hole section
End point, help to ensure that grouting effect.Anchoring assembly 3 is inscribed in the end setting connector and connecting hole of hole inner segment.Overfall cover 6
Interior setting overfall channel, overfall channel form overfall mouth 7 by the side of adjacent pores outer segment in 6 outside of overfall cover, overfall mouth 7 is used
In connection return pipe.External screw thread is arranged in the outer wall of overfall cover 6.
Grout-jetting pipe 1 is applied not only to conveying slurries, while having both and can be with the effect that anchoring assembly 3 is connect in hole, Grout-jetting pipe 1
Flexible pipe or rigid pipe are penetrated at this time for convenient for anchoring assembly 3 in hole to be placed in grout hole 8, Grout-jetting pipe 1 is preferably rigid pipe
Slurry pipe 1 has both the effect of connecting rod.The maximum pull that the specification of Grout-jetting pipe 1 is born by it, i.e., slurries device to hole under grouting pressure
The maximum axial thrust of mouth closed component, which calculates, to be determined.
Grout-jetting pipe 1 is preferably the tubing of rigidity.For example, Grout-jetting pipe 1 is made to obtain by steel pipe, the preferred seamless steel of heavy wall
Pipe.The length of Grout-jetting pipe 1 is the summation of the exposure length needed outside the depth of grout hole 8 and hole.The end of the hole inner segment of Grout-jetting pipe 1
Head is connect with anchoring assembly 3 in hole, and rotation Grout-jetting pipe 1 not will lead to anchoring assembly 3 in Grout-jetting pipe 1 and hole and disengage.
Anchoring assembly 3 is to be anchored in grout hole 8 in hole, and the device of anchor force is provided after fixed, for example, columned
Expansion and shrinkage type embolism.Grout hole 8 is circular hole, so anchoring assembly 3 is cylindrical in hole, and in hole the diameter of anchoring assembly 3 with
The diameter of grout hole 8 is adapted.The length of anchoring assembly 3 is by balancing under maximum grouting pressure in hole, and slurries are to aperture closed group
The axial thrust of part, i.e., the frictional resistance that anchoring assembly 3 can be provided in hole, which calculates, to be determined.Should have in anchoring assembly 3 in hole can lead to
Crossing rotation makes the structure of the expansion of anchoring assembly 3 or retraction in hole, and the structure can be connected and fixed by the grouting hole section of Grout-jetting pipe 1
And the expansion of anchoring assembly 3 or retraction in control hole are operated by rotation Grout-jetting pipe 1, the inscribed anchoring of the connector of hole inner segment and hole at this time
Component 3 is sequentially connected.In addition, anchoring assembly 3 can also use air pressure or hydraulic type embolism in hole, then need in Grout-jetting pipe at this time
The hose of pressurising expansion or release retraction is set up outside 1 and is drawn from aperture on overfall cover 6.
Orifice closing component includes compressing member 2, pressing plate 4 and sealed bolster plate 5.Inside setting and the overfall cover 6 of compressing member 2
The internal screw thread of external screw thread adaptation, compressing member 2 are threadedly connected to the outside of overfall cover 6 and form nut-screw bolt-type structure, wherein
Nut corresponds to compressing member 2, and bolt corresponds to overfall cover 6.Compressing member 2 is preferably steelwork.Specifically, compressing member 2 can set for inside
The sleeve of screw thread is set, or is big nut.So-called big nut, as more existing nut structure is identical but larger-sized nut.
For the ease of tightening, unscrewing adjustment compressing member 2, what the outside setting at least one set of compressing member 2, i.e. at least two were parallel to each other
Face, compressing member 2 can be pulled by clamping the two faces by pipe wrench.Alternatively, the outside of compressing member 2 in positive three while, it is positive four while, positive five side
Or regular hexagon, in this way compressing member 2 can be pulled by the pipe wrench of adaptation.Alternatively, the outside of compressing member 2 is welded to connect handle,
And the direction of handle is axially mutually perpendicular to Grout-jetting pipe 1, can directly be passed through handle in this way and be rotated compressing member 2.Compressing member 2 leans on
It the side setting pressing plate 4 and sealed bolster plate 5 of anchoring assembly 3, pressing plate 4 and the middle part aperture of sealed bolster plate 5 and is placed on back in adjacent pores
Outside slurry cover 6, wherein sealed bolster plate 5 is located at pressing plate 4 back to the side of compressing member 2.Sealed bolster plate 5 is used for directly by 8 hole of grout hole
Mouth is closed.
Anchoring assembly 3 is placed in grout hole 8 in hole, and sealed bolster plate 5 and the country rock surface 9 in aperture directly fit, in hole
The anchor force of anchoring assembly 3 passes to compressing member 2 by Grout-jetting pipe 1, and compressing member 2 is to pressing plate 4 and sealed bolster plate 5 applies and compresses
Power makes sealed bolster plate 5 and country rock surface 9 reach close-fitting state.Pressing force is not less than maximum grouting pressure, i.e. pressing force setting one
Fixed safe margin.The size of pressing force can be adjusted by knob compressing member 2, such as be compressed by pipe wrench or rotatable handle adjustment
Part 2 adjusts the size of pressing force.Sealed bolster plate 5 has certain elasticity, closed between country rock surface 9 to guarantee, such as
For rubber mat plate.Correspondingly, the length of compressing member 2, shift motion should meet orifice closing component can be provided needed for pressing force
It is required that.The thickness of sealed bolster plate 5, which should meet, to be wanted in the case where designing maximum grouting pressure with the closely connected required decrement in country rock surface 9
It asks, the thickness of pressing plate 4 needs to keep not bending in the case where designing maximum grouting pressure, therefore pressing plate 4 is preferably steel plate.
Sealed bolster plate 5 is elastic material, therefore can be fitted closely between pressing plate 4 and sealed bolster plate 5.Sealed bolster plate 5 can be with
Pressing plate 4 is adhered to back to the one side of compressing member 2, the structural plane of possible spillage is reduced, further avoids spillage.Due to compressing member 2
The rigid contact between pressing plate 4, and there is biggish pressing force, it is generally not in spillage phenomenon.In order to enhance compressing member 2
The airtightness between pressing plate 4 also sets up sealing element between compressing member 2 and pressing plate 4.Such as sealing element are as follows: be set to 2 He of compressing member
Elastic washer between pressing plate 4 and/or the rigid washer with sealing ring.
Overfall channel is also set up inside into the overfall cover 6 of overfall component, overfall cover 6 is run through in overfall channel.I.e. interior anchor formula hole
After the installation of mouthful locking device is in place, overfall channel be respectively communicated in the hole of grout hole 8 in outside hole.The outer profile of overfall cover 6 is circle
Column, overfall cover 6 can be with the solderable fastenings of Grout-jetting pipe 1.Pressing plate 4 and sealed bolster plate 5 are through 6 outside of overfall cover, outside overfall cover 6
The gap of wall is preferably smaller, reduces the channel sized of possible spillage.Preferably, the outer diameter of overfall cover 6 is smaller than the diameter of grout hole 8 by 4
The diameter of~6mm, pressing plate 4 and sealed bolster plate 5 is 2~3 times or bigger of the diameter of anchoring assembly 3 in hole.The filling of Grout-jetting pipe 1
Slurry outlet 11 is arranged in the tube wall for starching hole section end point, i.e. slurry outlet 11 is located at 8 bottom hole of grout hole, thus make slurries can be realized from
8 bottom hole of grout hole enters, rises along grout hole 8 and recycles with returning in aperture, the flow direction of slurries arrow direction as shown in figure 1
It is shown, it helps to ensure that and reaches expected grouting effect.
Claims (10)
- Anchor formula orifice closing device in 1., it is characterised in that: including into anchoring assembly in overfall component, orifice closing component and hole It (3), include Grout-jetting pipe (1) and overfall cover (6) into overfall component, Grout-jetting pipe (1) includes the hole outer segment for being exposed to outside grout hole With the hole inner segment for being inserted into grout hole, outer segment top in hole is the slurry intake (10) for connecting inlet pipe, overfall cover (6) fastening The overfall mouth (7) for connecting return pipe, overfall cover is arranged in position between hole outer segment and hole inner segment, overfall cover (6) outside (6) external screw thread is arranged in outer wall, at least one slurry outlet (11), anchor in the end connecting hole of hole inner segment is arranged in the tube wall of hole inner segment Gu component (3)；Orifice closing component includes compressing member (2), pressing plate (4) and sealed bolster plate (5), setting and overfall cover on the inside of compressing member (2) (6) internal screw thread of external screw thread adaptation, compressing member (2) are threadedly connected to overfall cover (6) outside and form nut-bolt type knot Structure；Side setting pressing plate (4) and sealed bolster plate (5), pressing plate (4) and gasket of the compressing member (2) by anchoring assembly (3) in adjacent pores Plate (5) is placed on overfall cover (6) outside.
- 2. anchor formula orifice closing device in as described in claim 1, it is characterised in that: the compressing member (2) and pressing plate (4) it Between also set up sealing element.
- 3. anchor formula orifice closing device in as claimed in claim 2, it is characterised in that: the sealing element are as follows: be set to compression Elastic washer between part (2) and pressing plate (4) and/or the rigid washer with sealing ring.
- 4. anchor formula orifice closing device in as described in claim 1, it is characterised in that: the outside of the compressing member (2) is arranged The outside in the face or compressing member (2) that at least one set is parallel to each other is welded to connect handle, and the direction of handle and Grout-jetting pipe (1) Axis direction be mutually perpendicular to.
- 5. anchor formula orifice closing device in as claimed in claim 4, it is characterised in that: the compressing member (2) is sleeve or spiral shell Mother, the outer profile in compressing member (2) cross section are in regular hexagon.
- 6. anchor formula orifice closing device in as described in claim 1, it is characterised in that: the Grout-jetting pipe (1) is steel pipe, steel pipe Grouting hole section end setting connect with anchoring assembly in hole (3), be adapted to connector.
- 7. anchor formula orifice closing device in as described in claim 1, it is characterised in that: the slurry outlet (11) is set to grouting The end point of hole section, slurry outlet (11) are 1~4.
- 8. the interior anchor formula orifice closing device as described in claim 1~7 any claim, it is characterised in that: the sealing Backing plate (5) is adhered to pressing plate (4) back to the one side of compressing member (2).
- 9. anchor formula orifice closing device in as claimed in claim 8, it is characterised in that: anchoring assembly (3) is in circle in the hole The outer diameter of column, overfall cover (6) is 4~6mm smaller than the diameter of anchoring assembly in hole (3), pressing plate (4) and sealed bolster plate (5) it is straight Diameter is 2~3 times of the diameter of anchoring assembly in hole (3).
- 10. the interior anchor formula orifice closing device as described in claim 1~7 any claim, it is characterised in that: in the hole Anchoring assembly (3) is columned expansion and shrinkage type embolism, and compressing member (2) and pressing plate (4) are iron and steel material quality, and sealed bolster plate (5) is Rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276361.3A CN109162660A (en) | 2018-10-30 | 2018-10-30 | Interior anchor formula orifice closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276361.3A CN109162660A (en) | 2018-10-30 | 2018-10-30 | Interior anchor formula orifice closing device |
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| Publication Number | Publication Date |
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| CN109162660A true CN109162660A (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811276361.3A Pending CN109162660A (en) | 2018-10-30 | 2018-10-30 | Interior anchor formula orifice closing device |
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| CN (1) | CN109162660A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144918A (en) * | 2019-05-22 | 2019-08-20 | 四川童燊防水工程有限公司 | Hypogee dewatering well antiseepage plugging construction method |
| CN110700789A (en) * | 2019-11-12 | 2020-01-17 | 宋宝玉 | Oil field packer |
| CN111877303A (en) * | 2020-08-28 | 2020-11-03 | 山东省水利勘测设计院 | Orifice pipe sealing device, grouting device and grouting method |
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Cited By (3)
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|---|---|---|---|---|
| CN110144918A (en) * | 2019-05-22 | 2019-08-20 | 四川童燊防水工程有限公司 | Hypogee dewatering well antiseepage plugging construction method |
| CN110700789A (en) * | 2019-11-12 | 2020-01-17 | 宋宝玉 | Oil field packer |
| CN111877303A (en) * | 2020-08-28 | 2020-11-03 | 山东省水利勘测设计院 | Orifice pipe sealing device, grouting device and grouting method |
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