CN109653782A - A kind of grouted anchor bar slurry stop and its construction method based on hydraulic dilatation - Google Patents
A kind of grouted anchor bar slurry stop and its construction method based on hydraulic dilatation Download PDFInfo
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- CN109653782A CN109653782A CN201910099472.XA CN201910099472A CN109653782A CN 109653782 A CN109653782 A CN 109653782A CN 201910099472 A CN201910099472 A CN 201910099472A CN 109653782 A CN109653782 A CN 109653782A
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- injected back
- grouting plug
- oil
- stop
- hydraulic
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- 239000002002 slurry Substances 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 15
- 238000004064 recycling Methods 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 153
- 239000012530 fluid Substances 0.000 claims description 60
- 238000005553 drilling Methods 0.000 claims description 32
- 238000007569 slipcasting Methods 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 229920002472 Starch Polymers 0.000 claims description 9
- 235000019698 starch Nutrition 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000000916 dilatatory effect Effects 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 11
- 230000008093 supporting effect Effects 0.000 description 5
- 210000002445 nipple Anatomy 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009955 starching Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 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
- 230000006378 damage Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of grouted anchor bar slurry stop and its construction method based on hydraulic dilatation, belongs to geotechnical engineering and mining engineering technical field.The grouted anchor bar slurry stop based on hydraulic dilatation, including recyclable hydraulic dilatation stop grouting plug and it is injected back into oil pump systems, recyclable hydraulic dilatation stop grouting plug includes stop grouting plug main body, stop grouting plug main body is equipped with first through hole and the second through-hole, the oil pipe that is injected back into that second through-hole is injected back into oil pump systems by being injected back into oil valve connects, the construction method of grouted anchor bar slurry stop based on hydraulic dilatation, including step 1, select recyclable hydraulic dilatation stop grouting plug, step 2, recyclable hydraulic dilatation stop grouting plug is installed, step 3, recyclable hydraulic dilatation stop grouting plug is fixed in the borehole, step 4, recycle recyclable hydraulic dilatation stop grouting plug.The grouted anchor bar slurry stop and its construction method based on hydraulic dilatation, only slurry plugging effect is good, only slurry ability is controllable, applied widely, structure is simple and convenient to operate, recyclable recycling.
Description
Technical field
The present invention relates to geotechnical engineering and mining engineering technical field, in particular to a kind of slip casting anchor based on hydraulic dilatation
Bar slurry stop and its construction method.
Background technique
In geotechnical engineering and mining engineering field, suspension roof support exists as a kind of effective surrounding rock supporting technique
It is widely applied in underground mine, Tunnel Engineering, open slope reinforcing and other geotechnical engineerings, but to weak, broken and high stress
For rock mass, common Effects of Supporting is bad；The appearance of hollow grouting anchor support process, by anchoring and grouting process one
Body, by hollow bolt into drilling high-pressure injected water slurry liquid, fill fragmented rock body in joint fissure, improve country rock
Loose structure improves the integral strength of country rock, greatly improves the effect of suspension roof support.
For grouted anchor bar support process, currently used grouting pressure is generally 5MPa-10MPa, higher slip casting
Pressure can guarantee that slurries generate biggish range of scatter in fragmented rock body, realize preferable surrounding rock consolidation supporting effect, but infuse
The increase for starching pressure, to only more stringent requirements are proposed for slurry system: good only slurry system can be realized effectively to armature boring hole
The closure of mouth improves grouting pressure in drilling, and otherwise will appear the slurry that overflows, spillage, phenomenon of whitewashing during slip casting, so that drilling
Interior slurry pressure is unable to reach design value, strong influence grouting support effect.
Currently used plain edition stop grouting plug is mostly circular platform type rubber stoping flowing pulp plug either circular platform type rigid plastics stop grouting plug,
Its smaller diameter end size is less than bore diameter, and larger diameter end size is greater than bore diameter, and there is the through-hole passed through for anchor pole at middle part,
The plain edition stop grouting plug is easy to appear following problem in actual use: (1) stop grouting plug deformation range is limited, to anchor pole and
The extrusion capability of the wall of a borehole is limited, cannot achieve effective closure to higher grouting pressure hole；(2) rock crusher where drilling
Degree is higher, when drilling forming is bad, easily forms gap between stop grouting plug outer and the wall of a borehole, can not block and then cause to leak
Slurry, whitewashing phenomenon；(3) labor intensity of workers is big when constructing, especially when only starching closure to armature boring aperture on carrying out, operation
It is extremely inconvenient.In conclusion plain edition stop grouting plug, in grouted anchor bar support process, existing greatest problem is bad adaptability,
Good closure only slurry effect can not be provided for high-pressure slip-casting, slip casting failure is even resulted in, so that the inlet well engineering
It scraps, not only causes economic loss, even more directly influence supporting effect, form security risk.
To solve the problems, such as that plain edition stop grouting plug exists in terms of engineer application, people have carried out correlative study: (1) Chinese
107654249 A of patent application CN discloses a kind of novel anchor rod, anchor cable combined type stop grouting plug, is made of elastic material
Center stop grouting plug and end face stop grouting plug join end to end composition, which is changing of carrying out on the basis of plain edition stop grouting plug
Into, it is still limited to the deformation range and shut-off capacity of elastic material, for high-pressure slip-casting technique, the only slurry effect of the stop grouting plug
Fruit cannot still meet the requirements；(2) 102296603 B of Chinese patent CN discloses a kind of anchor pole (anchor cable) stop grouting plug and only starches
System, based on the rubber material air bag that is arranged in upper and lower metal partion (metp), which needs in advance in use
Anchor pole (anchor cable) is fixed as one with slurry stop, then whole to be put into drilling, is limited by drilling device and technique, which exists
Certain grouted anchor bar support engineerings construction site can not implement, and limit the application range of the patent；It should only slurry system use
In need to connect multiple pipelines and observe situation control valve, operating process is complicated；The stop grouting plug using when rubber pneumatic bag in fill
Slurries are expired, entire stop grouting plug firmly blocks in the borehole under the action of collision deformation after grout cures, can not recycle again sharp
With allowing to take out stop grouting plug and drill, the slurries of solidified inside are increased into but also the device can not be reused
This.
Summary of the invention
Only starch that effect is bad, the scope of application is small, structure and complicated for operation, no to solve stop grouting plug of the existing technology
The technical problems such as recoverable, the present invention provides a kind of grouted anchor bar slurry stop and its construction party based on hydraulic dilatation
Method, with only slurry plugging effect is good, only slurry ability is controllable, applied widely, structure is simple and convenient to operate, recyclable repetition benefit
The advantages that using.
To achieve the goals above, the technical scheme is that
A kind of grouted anchor bar slurry stop based on hydraulic dilatation, including hydraulic dilatation stop grouting plug can be recycled and be injected back into oil pump
System；
The recyclable hydraulic dilatation stop grouting plug includes stop grouting plug main body, and the stop grouting plug main body is in annulus column, in
Hydraulic fluid chamber is equipped between wall and outer wall, the top of the stop grouting plug main body is equipped with polytetrafluoroethylene film, the stop grouting plug master
The bottom end of body is equipped with first through hole and the second through-hole, and the first through hole and the second through-hole be connected to hydraulic fluid chamber, and described the
One through-hole is connect with safety valve, and second through-hole is connect with oil valve is injected back into；
The oil pump systems that are injected back into include pressure gauge, regulating valve, are injected back into oil pipe and are injected back into oil pump, and the oil pump that is injected back into passes through
It is injected back into oil pipe and is connect with oil valve is injected back into, the pressure gauge and regulating valve are arranged on being injected back into oil pipe.
The wall thickness of the bottom end on the top and stop grouting plug main body of the stop grouting plug main body is 10-30mm.
Wall thickness of the hydraulic fluid chamber close to stop grouting plug main body inner wall side is 2-5mm, and the hydraulic fluid chamber is close to only slurry
The wall thickness for filling in body outer wall side is 2-5mm.
The stop grouting plug main body is made of rubber.
The hydraulic fluid chamber is annulus column.
The regulating valve is located at close to the side for being injected back into oil pump, and the pressure gauge is located remotely from the side for being injected back into oil pump.
The oil pump that is injected back into is hand oil pump or electric oil pump.
The outer wall of the bottom end of the stop grouting plug main body is equipped with steel garter spring.
The bottom end of the stop grouting plug main body is symmetrically arranged with steel bracing wire, the described one end of steel bracing wire far from stop grouting plug main body
Equipped with pull ring.
A kind of construction method of above-mentioned grouted anchor bar slurry stop based on hydraulic dilatation, comprising the following steps:
Step 1: selecting recyclable hydraulic dilatation stop grouting plug, selection is mutually fitted with hollow grouting anchor size and bore size
The recyclable hydraulic dilatation stop grouting plug answered, and the oil valve that is injected back into of its bottom end is connect with oil pipe is injected back into；
Step 2: recyclable hydraulic dilatation stop grouting plug is installed, by hollow note of the top of stop grouting plug main body towards in drilling
Anchor pole direction is starched, the anchor pole through-hole in the middle part of stop grouting plug main body is inserted in along hollow grouting anchor exposure in one end of country rock, and
It is placed on drilling orifice, adjusting is injected back into oil pump in oiling state, the valve switch for being injected back into oil valve is opened, by being injected back into oil pump to liquid
The expansion of hydraulic dilatation stop grouting plug the first side wall can be recycled to hollow slip casting anchor under the effect of hydraulic fluid chamber pressure in pumping cavity oiling
Bar generates extruding, and second sidewall expansion generates extruding to drill hole inner wall, completes the anchoring temporarily to hollow grouting anchor；
Step 3: recyclable hydraulic dilatation stop grouting plug is fixed in the borehole, it is required according to grouting pressure, by being injected back into oil
It pumps to hydraulic fluid chamber and continues oiling, pass through pressure gauge dynamic observation and control the pressure in hydraulic fluid chamber, reach design value
Later, stop oiling, close the valve switch for being injected back into oil valve, oil pump will be injected back into and be adjusted to oil return state, lay down and be injected back into oil pipe
Pressure disconnects the connection for being injected back into oil pipe and being injected back between oil valve, and hydraulic fluid chamber is in high-pressure state at this time, in the expansion of oil pressure
Under effect, the first side wall and second sidewall be deformed respectively with radial compression power, recyclable hydraulic dilatation stop grouting plug is fixed
In the borehole, realize that high-pressure slip-casting only starches function；
Step 4: recycling recyclable hydraulic dilatation stop grouting plug, high-pressure slip-casting operation is carried out to hollow grouting anchor, slip casting is complete
Cheng Hou, interior grout cures hole to be drilled, connection are injected back into oil pipe and are injected back into oil valve, open valve switch, make in hydraulic fluid chamber in height
Pressure condition hydraulic oil is injected back into oil pump along being injected back into oil pipe and flow back into, and hydraulic fluid chamber internal oil pressure is restored to original state at this time, closes
Valve closing door switch, and the connection for being injected back into oil pipe and being injected back between oil valve is disconnected, hydraulic dilatation stop grouting plug bottom can be recycled in subsequent drawing
The pull ring at end makes it pull steel bracing wire and recyclable hydraulic dilatation stop grouting plug is taken out recycling from drilling.
Beneficial effects of the present invention:
(1) it is made of rubber material and the internal recyclable hydraulic dilatation stop grouting plug for being equipped with hydraulic fluid chamber, in it
Under the action of portion's hydraulic fluid chamber high pressure oil, it can produce biggish flexible deformation and radial compression power, anchor pole and drilling be implemented with
Effect, which blocks, only starches；
(2) it is produced in a manner of hydraulic dilatation by the high-pressure radial extruding force between rubber material and anchor pole and the wall of a borehole
Raw biggish axial friction, the grouted anchor bar support process suitable for various different grouting pressures；
(3) the configuration of the present invention is simple, easy to operate, when construction, is not influenced by drilling device and grouted anchor bar technique, is constructed
When labor intensity of workers it is low；
(4) after the completion of grouting process, by simple piping connection and operation, it can be achieved that stopping to recyclable hydraulic dilatation
Recycling and reusing for slurry plug, reduces the cost in grouted anchor bar support process, improves the recycling rate of waterused for only starching system；
(5) grouting pressure of the invention according to hollow grouting anchor construction process requirement, the pressure of hydraulic fluid chamber are controlled
System and adjusting, it is applied widely.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of grouted anchor bar slurry stop based on hydraulic dilatation provided by the invention；
Fig. 2 is the sectional view of recyclable hydraulic dilatation stop grouting plug provided by the invention；
Fig. 3 is the sectional view along A-A of Fig. 2 of the present invention；
Fig. 4 is a kind of working condition signal of grouted anchor bar slurry stop based on hydraulic dilatation of the invention in the borehole
Figure.
In figure, 1- stop grouting plug main body, 2- steel garter spring, 3- safety valve, 4- is injected back into oil valve, and 5- nipple, 6- steel is drawn
Line, 7- pull ring, 8- are injected back into oil pipe, 9- pressure gauge, 10- regulating valve, and 11- is injected back into oil pump, 12- polytetrafluoroethylene film, and 13- is only starched
Fill in the top of main body, 14- second sidewall, 15- the first side wall, 16- hydraulic fluid chamber, the bottom end of 17- stop grouting plug main body, 18- second
Through-hole, 19- internal screw thread, 20- anchor pole through-hole, 21- first through hole, 22- are injected back into oil valve nipple, 23- hollow grouting anchor,
24- drill hole inner wall, 25- hydraulic oil, 26- valve switch.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.?
In description of the invention, it should be noted that term " on ", "lower", "inner", "outside" " front end ", " rear end ", " both ends ", " one
The orientation or positional relationship of the instructions such as end ", " other end " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply.Unless otherwise clearly defined and limited, term " peace
Dress ", " being provided with ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Of the existing technology in order to solve the problems, such as, as shown in Figures 1 to 4, the present invention provides one kind to be based on hydraulic expansion
The grouted anchor bar slurry stop opened, including hydraulic dilatation stop grouting plug can be recycled and be injected back into oil pump systems；Recyclable hydraulic dilatation stops
Slurry plug includes stop grouting plug main body 1, and stop grouting plug main body 1 is made of rubber, and stop grouting plug main body 1 is in annulus column, inner wall and outer
Hydraulic fluid chamber 16 is equipped between wall, hydraulic fluid chamber 16 is annulus column, and it is thin that the top 13 of stop grouting plug main body is equipped with polytetrafluoroethylene (PTFE)
Film 12, the bottom end 17 of stop grouting plug main body are equipped with first through hole 21 and the second through-hole 18, first through hole 21 and the second through-hole 18 with
Hydraulic fluid chamber 16 is connected to, and first through hole 21 is connect with safety valve 3, and the second through-hole 18 is connect with oil valve 4 is injected back into；It is injected back into oil pump systems
It including pressure gauge 9, regulating valve 10, is injected back into oil pipe 8 and is injected back into oil pump 11, be injected back into oil pump 11 by being injected back into oil pipe 8 and being injected back into oil valve 4
Connection, pressure gauge 9 and regulating valve 10 are arranged on being injected back into oil pipe 8, and regulating valve 10 is located at close to the side for being injected back into oil pump 11, pressure
Table 9 is located remotely from the side for being injected back into oil pump 11, and the wall thickness of the bottom end 17 on the top 13 and stop grouting plug main body of stop grouting plug main body is
10-30mm, wall thickness of the hydraulic fluid chamber 16 close to 1 inner wall side of stop grouting plug main body is 2-5mm, and hydraulic fluid chamber 16 is close to stop grouting plug master
The wall thickness of 1 outer wall side of body is 2-5mm.
In the present embodiment, as shown in Figure 1, I is recyclable hydraulic dilatation stop grouting plug, II is to be injected back into oil pump systems.Such as Fig. 2 and
Shown in 3, the through-hole in 1 center of stop grouting plug main body is anchor pole through-hole 20, passes through when only slurry is blocked for hollow grouting anchor 23, only starches
The both ends for filling in main body 1 are respectively its top and bottom end, and the wall thickness of its top and bottom end is 20mm, the top of stop grouting plug main body
13 and bottom end wall thickness it is larger, make its by hydraulic fluid chamber 16 oil pressure act on when be unlikely to deform, hydraulic fluid chamber 16 is close
The wall thickness of 1 inner wall side of stop grouting plug main body is 3mm, i.e. the first side wall 15 in Fig. 2, hydraulic fluid chamber 16 is close to stop grouting plug main body 1
The wall thickness of outer wall side is 3mm, i.e. second sidewall 14 in Fig. 2, and the wall thickness of the first side wall 15 and second sidewall 14 is relatively thin, is made
It is easier to deform when being acted on by the oil pressure in hydraulic fluid chamber 16, wherein 15 deformable squeeze anchor pole of the first side wall, second sidewall
14 deformable squeeze drill hole inner walls 24, to realize preferable only slurry plugging effect, in construction, 13, the top of stop grouting plug main body
In in drilling hole, anchor pole direction towards in drilling, the top 13 of stop grouting plug main body is covered with polytetrafluoroethylene film 12, with brill
Slurries and its solidifying body contact that high pressure is injected in hole reduce glutinous between recyclable hydraulic dilatation stop grouting plug and grout cures body
Power is tied, takes out recyclable hydraulic dilatation stop grouting plug from drilling after the completion of slip casting, is reused.Hydraulic fluid chamber 16 is annulus column
Shape cavity, for accommodating hydraulic oil 25, when construction, the original state of 16 internal oil pressure of hydraulic fluid chamber is full of 25 shape of hydraulic oil
State, i.e. 16 internal pressure of hydraulic fluid chamber is identical as atmospheric pressure, and stop grouting plug main body 1 is undeformed, the hydraulic oil 25 in hydraulic fluid chamber 16
To recyclable hydraulic dilatation stop grouting plug no pressure, it is not necessary that operation is exhausted when oiling is pressurizeed.First through hole 21 and the second through-hole
18 inner wall is equipped with internal screw thread 19, and first through hole 21 is threadedly coupled with safety valve 3, i.e., is screwed into safety valve spiral shell to first through hole 21
Line connector is with connection safety valve 3, and safety valve 3 is to prevent hypertonia in hydraulic fluid chamber 16 from damaging recyclable hydraulic dilatation only slurry
Plug realizes unloading pressure protection function by safety valve 3 before 16 internal pressure of hydraulic fluid chamber reaches capacity destruction value；Second through-hole
18 are threadedly coupled with oil valve 4 is injected back into, i.e., be screwed into the second through-hole 18 be injected back into oil valve nipple 22 with connect be injected back into oil valve 4, infuse
State of the oil return valve 4 to control and keep hydraulic oil 25 in hydraulic fluid chamber 16 is injected back into oil valve 4 equipped with valve switch 26, valve
Hydraulic fluid chamber 16 is communicated with oil pump 11 is injected back into when switch 26 is opened, and is in oiling pressurization or oil return depressurization phase, valve switch 26
When closure, keep being in stable state in hydraulic fluid chamber 16, therefore valve switch 26 is generally in closed state.
In the present embodiment, being injected back into oil pump 11 is hand oil pump or electric oil pump, is mainly used for injecting into hydraulic fluid chamber 16
Hydraulic oil 25 reaches required pressure, or 25 oil return of hydraulic oil for being in high pressure conditions in hydraulic fluid chamber 16 is unloaded and is depressed into atmosphere
Pressure.Regulating valve 10 is located at close to the side for being injected back into oil pump 11, and pressure gauge 9 is located remotely from the side for being injected back into oil pump 11, and pressure gauge 9 is used
The pressure state of hydraulic oil 25 in dynamic observation hydraulic fluid chamber 16, by the reading in pressure gauge 9, control is injected back on oil valve 4
Valve switch 26, and then realize adjustment to pressure in hydraulic fluid chamber 16, regulating valve 10, which is located at, is injected back into oil pump 11 and pressure gauge 9
Between, for adjusting the working condition for being injected back into oil pump 11 and being in oiling pressurization or oil return release.The bottom end 17 of stop grouting plug main body
Outer wall be equipped with steel garter spring 2,17 radial outer wall of bottom end of stop grouting plug main body is equipped with steel garter spring 2, and steel garter spring 2 can limit
Recyclable hydraulic dilatation stop grouting plug deforms when 16 oiling of hydraulic fluid chamber is pressurized, and first through hole 21 and safety valve 3 is avoided to connect
With 4 junction of oil valve is injected back into oil leakage phenomenon occurs for the place of connecing and the second through-hole 18.The bottom end 17 of stop grouting plug main body is symmetrically arranged with steel
Matter bracing wire 6, steel bracing wire 6 are equipped with pull ring 7 far from one end of stop grouting plug main body 1, and steel bracing wire 6 is close to the bottom end of stop grouting plug main body
17 center, high-pressure slip-casting operation terminate and grout cures after, can will be can be recycled by steel bracing wire 6 and pull ring 7
Hydraulic dilatation stop grouting plug is pulled out from drilling and is recycled and reused, and it is thin that the top 13 of stop grouting plug main body is equipped with polytetrafluoroethylene (PTFE)
The steel bracing wire 6 and pull ring 7 that film 12 and its bottom end are equipped with cooperate, and realize the recycling of recyclable hydraulic dilatation stop grouting plug.
A kind of construction method of above-mentioned grouted anchor bar slurry stop based on hydraulic dilatation, comprising the following steps:
Step 1: selecting recyclable hydraulic dilatation stop grouting plug, select and 23 size of hollow grouting anchor and bore size phase
The recyclable hydraulic dilatation stop grouting plug adapted to, and the oil valve 4 that is injected back into of its bottom end is connect with oil pipe 8 is injected back into；
Step 2: install recyclable hydraulic dilatation stop grouting plug, by the top 13 of stop grouting plug main body towards hollow in drilling
23 direction of grouted anchor bar, by the anchor pole through-hole 20 at 1 middle part of stop grouting plug main body along 23 exposure of hollow grouting anchor in the one of country rock
End cap enters, and is placed on drilling orifice, and adjusting is injected back into oil pump 11 in oiling state, opens the valve switch 26 for being injected back into oil valve 4, leads to
It crosses and is injected back into oil pump 11 to 16 oiling of hydraulic fluid chamber, under the effect of 16 pressure of hydraulic fluid chamber, recyclable hydraulic dilatation stop grouting plug first
The expansion of side wall 15 generates extruding to hollow grouting anchor 23, and the expansion of second sidewall 14 generates extruding to drill hole inner wall 24, completes
To the anchoring temporarily of hollow grouting anchor 23；
Step 3: recyclable hydraulic dilatation stop grouting plug is fixed in the borehole, it is required according to grouting pressure, by being injected back into oil
Pump 11 continues oiling to hydraulic fluid chamber 16, passes through 9 dynamic observation of pressure gauge and controls the pressure in hydraulic fluid chamber 16, reaches
After design value, stop oiling, closes the valve switch 26 for being injected back into oil valve 4, oil pump 11 will be injected back into and be adjusted to oil return state, laid down
It is injected back into the pressure of oil pipe 8, disconnects the connection for being injected back into oil pipe 8 and being injected back between oil valve 4, hydraulic fluid chamber 16 is in high pressure shape at this time
State, under the dilating effect of oil pressure, the first side wall 15 and second sidewall 14 be deformed respectively with radial compression power, will can be recycled
Hydraulic dilatation stop grouting plug is fixed in the borehole, realizes that high-pressure slip-casting only starches function；
Step 4: recycling recyclable hydraulic dilatation stop grouting plug, high-pressure slip-casting operation, slip casting are carried out to hollow grouting anchor 23
After the completion, interior grout cures hole to be drilled, connection are injected back into oil pipe 8 and are injected back into oil valve 4, open valve switch 26, make hydraulic fluid chamber 16
In be injected back into oil pump 11 in high pressure conditions hydraulic oil 25 along being injected back into oil pipe 8 and flow back into, 16 internal oil pressure of hydraulic fluid chamber is extensive at this time
It is multiple to close valve switch 26 to original state, and the connection for being injected back into oil pipe 8 and being injected back between oil valve 4 is disconnected, subsequent drawing can return
The pull ring 7 for receiving hydraulic dilatation stop grouting plug bottom end makes it pull steel bracing wire 6 and takes out recyclable hydraulic dilatation stop grouting plug from drilling
Recycling.
In the present embodiment, a kind of grouted anchor bar slurry stop based on hydraulic dilatation of the invention in the construction process, such as
Shown in Fig. 4, P is the pressure acted in hydraulic fluid chamber 16, firstly, drilling, needs to carry out the position of grouted anchor bar supporting in design
It sets, the grouted anchor bar hole of Drilling respective aperture and depth, hollow grouting anchor 23 is inserted in the hole until bottom hole, hollow slip casting anchor
Bar 23 is located at bore inner one end, and the modes such as resin explosive roll or simple anchor head can be used and carry out end anchorage, can also be temporarily without
It needs to anchor；Secondly, selecting recyclable hydraulic dilatation stop grouting plug, internal 20 diameter of anchor pole through-hole is selected to be slightly larger than hollow grouting anchor
23 diameters, outer diameter are slightly less than drilling internal diameter and can be recycled of matching with 23 size of hollow grouting anchor and bore size is hydraulic
Stop grouting plug is connect oil valve 4 is injected back into the oil pipe 8 that is injected back into for being injected back into oil pump 11 by nipple 5, and connection type is screw-threaded coupling
Connection；Then, recyclable hydraulic dilatation stop grouting plug is installed, 13 direction of top for the stop grouting plug main body for being injected back into oil pump 11 will be connected with
Anchor pole direction in drilling, suitable anchor pole exposure is in one end of country rock by the anchor pole through-hole 20 at 1 middle part of stop grouting plug main body along hollow note
Slurry anchor pole 23 is inserted in, and is placed on drilling orifice, and adjusting is injected back into oil pump 11 in oiling state, and that opens stop grouting plug bottom end is injected back into oil
Valve 4, by being injected back into oil pump 11 to 16 oiling of hydraulic fluid chamber inside recyclable hydraulic dilatation stop grouting plug, in 16 pressure of hydraulic fluid chamber
Under effect, the expansion of hydraulic dilatation stop grouting plug the first side wall 15 can be recycled, extruding is generated to anchor pole, second sidewall 14 is expanded to drilling
Inner wall 24 generates extruding, if not carrying out end anchorage when drilling, so that it may be realized by recyclable hydraulic dilatation stop grouting plug
The anchoring temporarily of anchor pole in drilling is consolidated hollow grouting anchor 23 to prevent hollow grouting anchor 23 from falling off from drilling
Determine in the borehole, next to require to securely fix recyclable hydraulic dilatation stop grouting plug in the borehole further according to grouting pressure；Into
One step, recyclable hydraulic dilatation stop grouting plug is fixed in the borehole, it is required, is led to according to the grouting pressure of grouted anchor bar support process
It crosses and is injected back into oil pump 11 and continues oiling to recyclable hydraulic dilatation stop grouting plug internal hydraulic pressure oil pocket 16, pass through 9 dynamic observation of pressure gauge
And the pressure in hydraulic fluid chamber 16 is controlled, after reaching design value, oiling can be stopped, closing the bottom end of stop grouting plug main body
17 are injected back into oil valve 4, will be injected back into oil pump 11 and are adjusted to oil return state, lay down the pressure for being injected back into oil pipe 8, disconnection be injected back into oil pipe 8 with
The connection being injected back between oil valve 4 can be recycled hydraulic dilatation stop grouting plug internal hydraulic pressure oil pocket 16 and be in high-pressure state, at this time in oil
Under the dilating effect of pressure, the first side wall 15 and second sidewall 14 be deformed respectively with radial compression power, it is hydraulic by can be recycled
Expansion stop grouting plug securely fixes in the borehole, realizes that high-pressure slip-casting only starches function；Further, recyclable hydraulic dilatation is recycled only to starch
Plug carries out high-pressure slip-casting operation to hollow grouting anchor 23 according to the requirement of grouted anchor bar design of its support, to be drilled after the completion of slip casting
In hole after grout cures, reconnects the bottom end 17 for being injected back into oil pipe 8 and stop grouting plug main body being injected back on oil pump 11 and is injected back into oil valve 4,
Valve switch 26 is opened, allows in hydraulic fluid chamber 16 and is injected back into oil pump 11 along being injected back into oil pipe 8 and flow back into high pressure conditions hydraulic oil 25
In, 16 internal oil pressure of hydraulic fluid chamber is restored to original state at this time, and closing is injected back into oil valve 4 and disconnects and is injected back into oil pipe 8 and is injected back into oil
The pull ring 7 of hydraulic dilatation stop grouting plug can be recycled in connection between valve 4, subsequent drawing, it is made to pull steel bracing wire 6 for recyclable liquid
Companding stop grouting plug takes out recycling from drilling；Finally, construction is completed, pallet is installed in anchor pole exposure country rock one end, tightens preload
Nut completes grouted anchor bar work progress.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of grouted anchor bar slurry stop based on hydraulic dilatation, which is characterized in that including hydraulic dilatation stop grouting plug can be recycled
Be injected back into oil pump systems；
The recyclable hydraulic dilatation stop grouting plug includes stop grouting plug main body, the stop grouting plug main body be in annulus column, inner wall and
Hydraulic fluid chamber is equipped between outer wall, the top of the stop grouting plug main body is equipped with polytetrafluoroethylene film, the stop grouting plug main body
Bottom end is equipped with first through hole and the second through-hole, and the first through hole and the second through-hole are connected to hydraulic fluid chamber, and described first is logical
Hole is connect with safety valve, and second through-hole is connect with oil valve is injected back into；
The oil pump systems that are injected back into include pressure gauge, regulating valve, are injected back into oil pipe and are injected back into oil pump, and the oil pump that is injected back into is by being injected back into
Oil pipe is connect with oil valve is injected back into, and the pressure gauge and regulating valve are arranged on being injected back into oil pipe.
2. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the stop grouting plug
The wall thickness of the bottom end on the top and stop grouting plug main body of main body is 10-30mm.
3. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the hydraulic oil
Wall thickness of the chamber close to stop grouting plug main body inner wall side is 2-5mm, wall of the hydraulic fluid chamber close to stop grouting plug body outer wall side
Thickness is 2-5mm.
4. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the stop grouting plug
Main body is made of rubber.
5. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the hydraulic oil
Chamber is annulus column.
6. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the regulating valve
Positioned at close to the side for being injected back into oil pump, the pressure gauge is located remotely from the side for being injected back into oil pump.
7. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that described to be injected back into oil
Pump is hand oil pump or electric oil pump.
8. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the stop grouting plug
The outer wall of the bottom end of main body is equipped with steel garter spring.
9. the grouted anchor bar slurry stop according to claim 1 based on hydraulic dilatation, which is characterized in that the stop grouting plug
The bottom end of main body is symmetrically arranged with steel bracing wire, and the steel bracing wire is equipped with pull ring far from one end of stop grouting plug main body.
10. the construction method of the grouted anchor bar slurry stop described in claim 1 based on hydraulic dilatation, which is characterized in that packet
Include following steps:
Step 1: selecting recyclable hydraulic dilatation stop grouting plug, selection is adapted with hollow grouting anchor size and bore size
Recyclable hydraulic dilatation stop grouting plug, and the oil valve that is injected back into of its bottom end is connect with oil pipe is injected back into；
Step 2: recyclable hydraulic dilatation stop grouting plug is installed, by hollow slip casting anchor of the top of stop grouting plug main body towards in drilling
Anchor pole through-hole in the middle part of stop grouting plug main body is inserted in along hollow grouting anchor exposure in one end of country rock, and is placed in bar direction
In drilling orifice, adjusting is injected back into oil pump in oiling state, the valve switch for being injected back into oil valve is opened, by being injected back into oil pump to hydraulic oil
Chamber oiling can be recycled the expansion of hydraulic dilatation stop grouting plug the first side wall and produce to hollow grouting anchor under the effect of hydraulic fluid chamber pressure
Raw to squeeze, second sidewall expansion generates extruding to drill hole inner wall, completes the anchoring temporarily to hollow grouting anchor；
Step 3: recyclable hydraulic dilatation stop grouting plug is fixed in the borehole, required according to grouting pressure, by be injected back into oil pump to
Hydraulic fluid chamber continues oiling, passes through pressure gauge dynamic observation and controls the pressure in hydraulic fluid chamber, after reaching design value,
Stop oiling, close the valve switch for being injected back into oil valve, oil pump will be injected back into and be adjusted to oil return state, lay down the pressure for being injected back into oil pipe,
The connection for being injected back into oil pipe and being injected back between oil valve is disconnected, hydraulic fluid chamber is in high-pressure state at this time, in the dilating effect of oil pressure
Under, the first side wall and second sidewall be deformed respectively with radial compression power, recyclable hydraulic dilatation stop grouting plug is fixed on brill
Kong Zhong realizes that high-pressure slip-casting only starches function；
Step 4: recycling recyclable hydraulic dilatation stop grouting plug, high-pressure slip-casting operation is carried out to hollow grouting anchor, slip casting is completed
Afterwards, interior grout cures hole to be drilled, connection are injected back into oil pipe and are injected back into oil valve, open valve switch, make in hydraulic fluid chamber in high pressure
State hydraulic oil is injected back into oil pump along being injected back into oil pipe and flow back into, and hydraulic fluid chamber internal oil pressure is restored to original state at this time, closes
Valve switch, and the connection for being injected back into oil pipe and being injected back between oil valve is disconnected, hydraulic dilatation stop grouting plug bottom end can be recycled in subsequent drawing
Pull ring, make its pull steel bracing wire by recyclable hydraulic dilatation stop grouting plug from drilling take out recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099472.XA CN109653782B (en) | 2019-01-31 | 2019-01-31 | Grouting anchor rod grouting stopping device based on hydraulic expansion and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099472.XA CN109653782B (en) | 2019-01-31 | 2019-01-31 | Grouting anchor rod grouting stopping device based on hydraulic expansion and construction method thereof |
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| Publication Number | Publication Date |
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| CN109653782A true CN109653782A (en) | 2019-04-19 |
| CN109653782B CN109653782B (en) | 2024-02-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090024434A (en) * | 2007-09-04 | 2009-03-09 | 김용기 | Limit expansion packer, anchoring method using pressing and reaming & water stopping anchoring method using pressing |
| CN102296603A (en) * | 2011-06-02 | 2011-12-28 | 北京科技大学 | Grouting-stopping plug and system for anchor rod (anchor cable) |
| CN105089687A (en) * | 2015-09-26 | 2015-11-25 | 王新丰 | Bolt-grouting supporting process system |
| CN209586404U (en) * | 2019-01-31 | 2019-11-05 | 丹东丹银矿冶有限责任公司 | A kind of grouted anchor bar slurry stop based on hydraulic dilatation |
-
2019
- 2019-01-31 CN CN201910099472.XA patent/CN109653782B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090024434A (en) * | 2007-09-04 | 2009-03-09 | 김용기 | Limit expansion packer, anchoring method using pressing and reaming & water stopping anchoring method using pressing |
| CN102296603A (en) * | 2011-06-02 | 2011-12-28 | 北京科技大学 | Grouting-stopping plug and system for anchor rod (anchor cable) |
| CN105089687A (en) * | 2015-09-26 | 2015-11-25 | 王新丰 | Bolt-grouting supporting process system |
| CN209586404U (en) * | 2019-01-31 | 2019-11-05 | 丹东丹银矿冶有限责任公司 | A kind of grouted anchor bar slurry stop based on hydraulic dilatation |
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| CN109653782B (en) | 2024-02-27 |
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