CN108979685A - A kind of construction method using prestressed component suspension roof support mine broken rock - Google Patents
A kind of construction method using prestressed component suspension roof support mine broken rock Download PDFInfo
- Publication number
- CN108979685A CN108979685A CN201810914666.6A CN201810914666A CN108979685A CN 108979685 A CN108979685 A CN 108979685A CN 201810914666 A CN201810914666 A CN 201810914666A CN 108979685 A CN108979685 A CN 108979685A
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- prestressed component
- screw rod
- anchor pole
- branch
- prestressed
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- 239000000725 suspension Substances 0.000 title claims abstract description 35
- 239000011435 rock Substances 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000004873 anchoring Methods 0.000 claims abstract description 15
- 230000001174 ascending effect Effects 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 238000007569 slipcasting Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims description 4
- 238000011900 installation process Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 4
- 230000005641 tunneling Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003245 working effect Effects 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
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- 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
-
- 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
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of construction methods using prestressed component suspension roof support mine broken rock, comprising the following steps: in mine, broken rock bores branch guard aperture；After drilling, the remaining sillar in branch guard aperture is cleared up；The resin anchoring agent being set on prestressed component anchor pole anchor head is stirred evenly, anchor pole is filled in branch guard aperture, fixes prestressed component anchor pole upper end；Pull down prestressed component anchor pole, top suspension device be unfolded and complete it is self-locking, and make lower part rotation ascending branch protection unit be unfolded；The pallet for withstanding palisades outside branch guard aperture is installed in the lower part of prestressed component anchor pole；By being set on prestressed component anchor pole and exporting slip casting in the once grouting Guan Xiangzhi guard aperture for leading to prestressed component anchor pole top；Secondary grouting is carried out by the secondary grouting pipe being set on prestressed component anchor pole.The construction method advantageously accounts in chamber, tunnel rock in tunneling process, the construction safeties problem such as wall caving, roof fall that the relatively broken place of country rock occurs.
Description
Technical field
The present invention relates to a kind of construction methods using prestressed component suspension roof support mine broken rock, are suitable for cave
The support engineerings construction field such as mouth, tunnel.
Background technique
During cave mouth is crushed belt construction, easily there is collapsing, inbreak；Construction safety environment is poor；Cave mouth supporting matter
Amount requires high, large carrying capacity.Currently used construction method is the method for grouting filling to handle crushed zone, and cost is high, effect
Fruit is poor, and speed of application is slow.And suspension roof support is as a kind of effective development heading support pattern, due to roadway surrounding rock intensity
Invigoration effect is remarkably improved the stability of country rock, in addition lower with support cost, fast at lane speed, labor intensity mitigation,
It improves drift section utilization rate, simplify that Ileal neobladder end service procedure, to be obviously improved operating environment and safety production condition etc. excellent
The economic benefit of mine can be improved in point, and use is more and more extensive, thus becomes a kind of main supporting of coal mining enterprise's mine laneway
Form represents the main direction of development of colliery tunnel support technology.But suspension roof support is used, the disadvantage is that it belongs to recessive branch
Shield, is not easy the monitoring and detection of supporting quality and reliability, it sometimes appear that the roof fall accident without obvious tendency, in addition, right
The very big soft rock of deflection, the biggish tunnel of plasticity stope drift active workings, supporting effect is not easy to guarantee, tunnel is caused not to be available.
Summary of the invention
The purpose of the present invention is to provide a kind of construction method using prestressed component suspension roof support mine broken rock,
It advantageously accounts in chamber, tunnel rock in tunneling process, the construction safeties such as wall caving, roof fall that the relatively broken place of country rock occurs are asked
Topic.
Technical program of the present invention lies in: a kind of construction party using prestressed component suspension roof support mine broken rock
Method, comprising the following steps:
1) drill: in mine, broken rock bores branch guard aperture；
2) borehole cleaning: after drilling, the remaining sillar in branch guard aperture is cleared up；
3) prestressed component anchor pole: the resin anchoring agent being set on prestressed component anchor pole anchor head is stirred evenly, it
Anchor pole is filled in branch guard aperture afterwards, fixes prestressed component anchor pole upper end, it is ensured that prestressed component it is anchor rod anchored securely subject to；
4) anchor the construction of end: after ensuring that resin anchoring agent anchoring is tight, drop-down prestressed component anchor pole makes to be set to pre- answer
Top suspension device on power component anchor pole is unfolded and completes self-locking, and makes to be set to prestressed component by nut rotating mechanism
Lower part rotation ascending branch protection unit expansion on anchor pole；
5) pallet is installed: installing the pallet for withstanding palisades outside branch guard aperture in the lower part of prestressed component anchor pole；
6) once grouting: by being set on prestressed component anchor pole and the primary note on prestressed component anchor pole top is led in outlet
Slip casting in Guan Xiangzhi guard aperture is starched, slurries are infused from top to bottom, to infuse the standard that do not enter to fill；
7) it secondary grouting: 2-3 days after once grouting, is carried out by the secondary grouting pipe being set on prestressed component anchor pole secondary
Slip casting.
Further, do not had in the step 2 using the remaining sillar in giant cleaning drilling with drilling is intermediate
Sillar blocking drilling is standard.
Further, the prestressed component anchor pole includes screw rod, and the upper end of the screw rod is provided with anchor head, the anchor head
Outside be enclosed with and be encapsulated in the intracorporal resin anchoring agent of bag, be located on the downside of anchor head on screw rod after being provided with screw rod drop-down and be unfolded
And the top suspension device of branch guard aperture side wall is blocked, prestressing force regulating device is provided on the shaft of the screw rod, under screw rod
Portion be provided with expansion after block branch guard aperture side wall lower part rotation ascending branch protection unit, the pallet be placed on screw rod and be located at lower part
The downside of ascending branch protection unit is revolved, is located on the screw rod and is equipped with stop grouting plug on the downside of pallet and is bolted with locking nut, screw rod
Both sides be correspondingly arranged on once grouting pipe and secondary grouting pipe that grout outlet is located at screw rod top, the once grouting
The other end of pipe and secondary grouting pipe is pierced by by pallet respectively.
Further, the anchor head includes anchor head set, and vertical blind hole from bottom to top is provided in the anchor head set, described
The front-rear side walls of vertical blind hole are respectively arranged with longitudinal blind hole, the two sidewalls of vertical blind hole and the downside setting for being located at longitudinal blind hole
There is cross through hole, the connecting rod for being connected with screw rod upper end, the upper end of the connecting rod are provided in the vertical blind hole
Through being connected at the top of spring and vertical blind hole, the front and back side of connecting rod is respectively arranged with upper springs ejector pin, and the two of connecting rod
Side and be located at upper springs ejector pin on the downside of be provided with lower springs ejector pin.
Further, the top suspension device includes the hinge that screw rod is fixedly connected with and be used for the lower end of anchor head and is passed through
Joint chair, the circumference interval of the hinged seat are hinged with several connecting rods, the screw rod top and downside for being located at hinged seat is fixed
There is fixing seat, the downside that connecting rod is located in the fixing seat, which corresponds to, is hinged with branch guard bar, the other end of the connecting rod and upper branch
It is hinged in the middle part of guard bar.
Further, the prestressed component regulating device includes the top fixinig plate with screw rod top bolt, described
Top fixinig plate circumference is fixed at intervals with several prestress wires, and the lower part of the screw rod is bolted with lower fixing piece, institute
The circumference interval for stating lower fixing piece is bolted with several bolts being arranged from bottom to top, the bolt and corresponding prestress steel
It mutually welds the lower end of twisted wire.
Further, in the step 3), before the mounting, check whether prestress wire is secured, while applying pre-
Stress, it is ensured that prestress wire is loaded with prestressing force.
Further, the both sides of the top fixinig plate and lower fixing piece are respectively arranged with vertical through holes, and described one
The upper end of secondary Grouting Pipe and secondary grouting pipe is passed through by corresponding vertical through holes on the fixinig plate of top respectively and is fixed on through buckle
On screw rod, the same end of once grouting pipe and secondary grouting pipe is each passed through on lower fixing piece corresponding vertical through holes and by holding in the palm
Through-hole in the middle part of disk is pierced by；The other end end for ensuring to infuse primary slurry pipe and secondary grouting pipe in the installation process of pallet is exposed at
Outside.
Further, the lower part rotation ascending branch protection unit includes the upper mounted plate being connected with screw rod lower part, described solid
The circumference interval of fixed board is hinged with lower branch guard bar, is located on the downside of upper mounted plate on screw rod and is equipped with bottom plate, spiral shell on screw rod
The rotation for being connected to driving bottom plate lifting rises nut, and the circumference of the bottom plate is corresponding to be hinged in the middle part of upper end and lower branch guard bar
The support rod being hinged.
Further, the nut rotating mechanism in the step 4) includes the casing for being sleeved on the screw rod, described sleeve pipe
Upper end be provided with and revolve and rise the Hexagon hole that matches of nut, be welded with bearing in the middle part of casing, lower end, which is provided with, to be used for
The outer-hexagonal structure being connected with spanner.
Compared with prior art, the invention has the following advantages that this is broken using prestressed component suspension roof support mine
The construction method of rock stratum, so that the operation safeties problem such as chamber, tunnel rock stratum are slack and undisciplined, relatively broken, easy collapsing slabbing to controlling substantially
System is conducive to effectively solve in chamber, tunnel rock in tunneling process, and wall caving, the roof fall etc. that the relatively broken place of country rock occurs are applied
Work safety problem；Practical is strong, not only ensure that stability and the safety of construction, but also improves construction efficiency, props up simultaneously
Protect significant effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prestressed component anchor pole of the invention；
Fig. 2 is the structural schematic diagram of anchor head of the invention；
Fig. 3 is the A-A cross-sectional view of Fig. 2 of the invention；
Fig. 4 is the structural schematic diagram of top suspension device of the invention；
Fig. 5 is the structural schematic diagram of prestressing force regulating device of the invention；
Fig. 6 is the B-B cross-sectional view of Fig. 5 of the invention；
Fig. 7 is the structural schematic diagram that ascending branch protection unit is revolved in lower part of the invention；
Fig. 8 is the structural schematic diagram of nut rotating mechanism of the invention.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make detailed
It is carefully described as follows, but the present invention is not limited thereto.
Referring to figs. 1 to Fig. 8
A kind of construction method using prestressed component suspension roof support mine broken rock, comprising the following steps:
1) it drills: branch guard aperture is bored in mine broken rock by the common drilling device in mine,；
2) borehole cleaning: after drilling, the remaining sillar in branch guard aperture is cleared up；
3) prestressed component anchor pole: the resin anchoring agent being set on prestressed component anchor pole anchor head is stirred evenly, it
Anchor pole is filled in branch guard aperture afterwards, fixes prestressed component anchor pole upper end, it is ensured that prestressed component it is anchor rod anchored securely subject to；
4) anchor the construction of end: after ensuring that resin anchoring agent anchoring is tight, pulling down prestressed component anchor pole, make in anchor head from
Latch mechanism snaps into card slot, and the top suspension device being set on prestressed component anchor pole is unfolded and realizes under the effect of gravity certainly
The lower part being set on prestressed component anchor pole rotation ascending branch protection unit is unfolded by nut Xuan Sheng mechanism and is supported on supporting by lock
The side wall in hole；
5) pallet is installed: installing the pallet for withstanding palisades outside branch guard aperture in the lower part of prestressed component anchor pole；
6) once grouting: anchoring whole tensioning after pallet installation, can slip casting immediately, by being set to prestressed component anchor
Slip casting in the once grouting Guan Xiangzhi guard aperture on prestressed component anchor pole top is led on bar and outlet, and slurries are infused from top to bottom, with
Infuse the standard that do not enter to fill；
7) it secondary grouting: 2-3 days after once grouting, is carried out by the secondary grouting pipe being set on prestressed component anchor pole secondary
Slip casting, the grout outlet of secondary grouting pipe ensure that the top suspension device of upper end forms one by secondary grouting in the upper end of screw rod
A positive fimbriatum.
In the present embodiment, using the remaining sillar in giant cleaning drilling in the step 2, do not have so that drilling is intermediate
Having sillar blocking drilling is standard.
In the present embodiment, the prestressed component anchor pole includes screw rod 10, and the upper end of the screw rod is provided with anchor head 20, institute
It states to be enclosed on the outside of anchor head and is encapsulated in the intracorporal resin anchoring agent 22 of bag, be located on the downside of anchor head on screw rod and be provided under screw rod
It is unfolded and blocks the top suspension device 30 of branch guard aperture side wall after drawing, prestressing force is provided on the shaft of the screw rod and adjusts dress
It sets, the lower part of screw rod is provided with the lower part rotation ascending branch protection unit 50 that branch guard aperture side wall is blocked after expansion, and the pallet 60 is placed on
On screw rod and it is located at the downside that ascending branch protection unit is revolved in lower part, is located on the downside of pallet on the screw rod and is equipped with stop grouting plug 71, pad
Piece 72 is simultaneously bolted with locking nut 73, to block the hole on pallet by stop grouting plug, and completes pallet by locking nut
And the locking of stop grouting plug.The both sides of screw rod are correspondingly arranged on the once grouting pipe 11 and two that grout outlet is located at screw rod top
The other end of secondary Grouting Pipe 12, the once grouting pipe and secondary grouting pipe is pierced by by pallet respectively, will pass through once grouting
Pipe and secondary grouting pipe complete slip casting process.
In the present embodiment, the anchor head includes anchor head set 21, and vertical blind hole from bottom to top is provided in the anchor head set
211, the front-rear side walls of the vertical blind hole are respectively arranged with longitudinal blind hole 212, the two sidewalls of vertical blind hole and are located at longitudinal blind
It is provided with cross through hole 213 on the downside of hole, the connecting rod 23 for being connected with screw rod upper end is provided in the vertical blind hole,
Through being connected at the top of spring 24 and vertical blind hole, the front and back side of connecting rod is respectively arranged with top bullet for the upper end of the connecting rod
Spring ejector pin 231, the both sides of connecting rod and be located at upper springs ejector pin on the downside of be provided with lower springs ejector pin 232, so as to
When screw rod pulls downward on, it is caught in upper springs ejector pin in longitudinal blind hole, lower springs ejector pin is caught in cross through hole, and then is made
It is completed after the expansion of top suspension device self-locking.
In the present embodiment, the upper springs ejector pin, lower springs ejector pin respectively include being set to the spring in connecting rod
233, the both ends of the spring are connected separately with cylindrical clamp.
In the present embodiment, in the present embodiment, the top suspension device includes being fixedly connected and being used for the lower end of anchor head
The hinged seat 31 that screw rod or connecting rod pass through, the circumference interval of the hinged seat are hinged with several connecting rods 32, the screw rod
Top and it is located on the downside of hinged seat and is fixed with fixing seat 33, the downside correspondence that connecting rod is located in the fixing seat is hinged with branch
Guard bar 34, the number of the upper branch guard bar are four, are hinged in the middle part of the other end of the connecting rod and upper branch guard bar.To logical
Cross pull downward on screw rod make top suspension device formed a reversed umbrella-type support frame, and under rod piece self gravitation effect get over
It is more fastened toward drop-down.
In the present embodiment, the prestressing force regulating device includes the top fixinig plate 41 with screw rod top bolt, described
Top fixinig plate circumference is fixed at intervals with several prestress wires 42, and the lower part of the screw rod is bolted with lower fixing piece
43, the circumference interval of the lower fixing piece is bolted with several bolts being arranged from bottom to top 44, state bolt with it is corresponding pre-
The lower end of prestress steel strand is mutually welded or hingedly, to adjust the rate of tension of prestress wire by rotation bolt.
In the present embodiment, the number of the prestress wire is 3 and the laying of 120 ° of interval, thus after the completion of slip casting
Prestress wire and screw rod and slurry is set to form entirety, so that anchoring strength further be turned up.In the step 3), installing
Before, check whether prestress wire is secured, while applying prestressing force, it is ensured that prestress wire is loaded with prestressing force.
In the present embodiment, the both sides of the top fixinig plate and lower fixing piece are respectively arranged with vertical through holes 45, institute
The upper end for stating once grouting pipe and secondary grouting pipe is passed through respectively by corresponding vertical through holes on the fixinig plate of top and through buckle 13
It is fixed on screw rod, the same end of once grouting pipe and secondary grouting pipe is each passed through corresponding vertical through holes on lower fixing piece
And the through-hole gap by passing through in the middle part of pallet for screw rod is pierced by；Ensure to infuse primary slurry pipe and secondary in the installation process of pallet
The other end end of Grouting Pipe is exposed, so as to later period slip casting.
In the present embodiment, the lower part rotation ascending branch protection unit includes the upper mounted plate 51 being connected with screw rod lower part, described
The circumference interval of upper mounted plate is hinged with branch guard bar 52 under four, is located on the downside of upper mounted plate on screw rod and is equipped with bottom plate
53, the rotation that driving bottom plate lifting is bolted on screw rod rises nut 54, and the circumference correspondence of the bottom plate is hinged with four
The support rod 55 being hinged in the middle part of upper end and lower branch guard bar, lower branch guard bar to be unfolded after rotating liter nut upwards and to block
On the side wall of branch guard aperture.It is known that whether bottom end structure opens up into suitable position by the circle number that liter nut is revolved in rotation in use
It sets.
In the present embodiment, fixed plate includes the upper fixture nut 511 with screw rod bolt, is located on screw rod upper solid
Determine to be equipped with the connecting plate 512 for being hinged with lower branch guard bar on the downside of nut, interval is hinged with four on the connecting plate
Lower branch guard bar is located on the downside of connecting plate the lower fixture nut 513 that is spirally connected on the screw rod, thus realize the positioning of connecting plate, and
It can be according to the position of branch guard aperture specific depth adjustment lower part rotation ascending branch protection unit.The other end of the lower branch guard bar is provided with suction
Disc type disk 56, to be preferably adsorbed on branch guard aperture side wall.
In the present embodiment, the nut rotating mechanism in the step 4) includes for being covered from bottom to top in screw rod when in use
On casing 81, the upper end of described sleeve pipe, which is provided with and revolves, rises the Hexagon hole 82 that matches of nut, is welded with axis in the middle part of casing
83 are held, it is as shown in Figure 8 that lower end is provided with the outer-hexagonal structure 84(for being connected with spanner), to pass through spanner or set
Cylinder makes rotation rise nut and rises with sleeve rotating, can unload casing after the expansion of branch guard bar.
The foregoing is merely presently preferred embodiments of the present invention, for the ordinary skill in the art, according to this hair
Bright introduction is designed various forms of construction methods using prestressed component suspension roof support mine broken rock and is not needed
Creative labor, without departing from the principles and spirit of the present invention it is all done according to scope of the present invention patent it is equal
Equal change, modification, replacement and modification, are all covered by the present invention.
Claims (10)
1. a kind of construction method using prestressed component suspension roof support mine broken rock, which is characterized in that including following step
It is rapid:
1) drill: in mine, broken rock bores branch guard aperture；
2) borehole cleaning: after drilling, the remaining sillar in branch guard aperture is cleared up；
3) prestressed component anchor pole: the resin anchoring agent being set on prestressed component anchor pole anchor head is stirred evenly, it
Anchor pole is filled in branch guard aperture afterwards, fixes prestressed component anchor pole upper end, it is ensured that prestressed component it is anchor rod anchored securely subject to；
4) anchor the construction of end: after ensuring that resin anchoring agent anchoring is tight, drop-down prestressed component anchor pole makes to be set to pre- answer
Top suspension device on power component anchor pole is unfolded and completes self-locking, and makes to be set to prestressed component by nut rotating mechanism
Lower part rotation ascending branch protection unit expansion on anchor pole；
5) pallet is installed: installing the pallet for withstanding palisades outside branch guard aperture in the lower part of prestressed component anchor pole；
6) once grouting: by being set on prestressed component anchor pole and the primary note on prestressed component anchor pole top is led in outlet
Slip casting in Guan Xiangzhi guard aperture is starched, slurries are infused from top to bottom, to infuse the standard that do not enter to fill；
7) it secondary grouting: 2-3 days after once grouting, is carried out by the secondary grouting pipe being set on prestressed component anchor pole secondary
Slip casting.
2. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 1,
It is characterized in that, using the remaining sillar in giant cleaning drilling in the step 2, is blocked so that drilling is intermediate without sillar
Drilling is standard.
3. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 1 or 2,
It is characterized in that, the prestressed component anchor pole includes screw rod, the upper end of the screw rod is provided with anchor head, the outside of the anchor head
It is enclosed with and is encapsulated in the intracorporal resin anchoring agent of bag, be located on the downside of anchor head on screw rod after being provided with screw rod drop-down and be unfolded and block
The top suspension device of branch guard aperture side wall is provided with prestressing force regulating device, the lower part setting of screw rod on the shaft of the screw rod
There is the lower part rotation ascending branch protection unit that branch guard aperture side wall is blocked after being unfolded, the pallet, which is placed on screw rod and is located at lower part, revolves ascending branch
The downside of protection unit is located on the screw rod and is equipped with stop grouting plug on the downside of pallet and is bolted with locking nut, the two sides of screw rod
Portion is correspondingly arranged on the once grouting pipe and secondary grouting pipe that grout outlet is located at screw rod top, the once grouting pipe and two
The other end of secondary Grouting Pipe is pierced by by pallet respectively.
4. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 3,
It is characterized in that, the anchor head includes anchor head set, and vertical blind hole from bottom to top, the vertical blind hole are provided in the anchor head set
Front-rear side walls be respectively arranged with longitudinal blind hole, two sidewalls of vertical blind hole and being located on the downside of longitudinal blind hole are provided with laterally logical
Hole, is provided with the connecting rod for being connected with screw rod upper end in the vertical blind hole, the upper end of the connecting rod through spring with
It is connected at the top of vertical blind hole, the front and back side of connecting rod is respectively arranged with upper springs ejector pin, the both sides and position of connecting rod
Lower springs ejector pin is provided on the downside of upper springs ejector pin.
5. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 3,
It is characterized in that, the top suspension device includes the hinged seat that screw rod is fixedly connected with and be used for the lower end of anchor head and is passed through, institute
The circumference interval for stating hinged seat is hinged with several connecting rods, the screw rod top and is located on the downside of hinged seat and is fixed with fixation
, the downside that connecting rod is located in the fixing seat, which corresponds to, is hinged with branch guard bar, the other end of the connecting rod and upper branch guard bar
Middle part is hinged.
6. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 3,
It is characterized in that, the prestressing force regulating device includes the top fixinig plate with screw rod top bolt, the top fixinig plate week
Portion is fixed at intervals with several prestress wires, and the lower part of the screw rod is bolted with lower fixing piece, the lower fixing piece
Circumference interval be bolted with several bolts being arranged from bottom to top, the lower end phase of the bolt and corresponding prestress wire
Welding.
7. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 6,
It is characterized in that in the step 3), before the mounting, checking whether prestress wire is secured, while applying prestressing force, it is ensured that
Prestress wire is loaded with prestressing force.
8. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 6 or 7,
It is characterized in that, the both sides of the top fixinig plate and lower fixing piece are respectively arranged with vertical through holes, the once grouting
The upper end of pipe and secondary grouting pipe is passed through by corresponding vertical through holes on the fixinig plate of top respectively and is fixed on screw rod through buckle,
The same end of once grouting pipe and secondary grouting pipe is each passed through on lower fixing piece corresponding vertical through holes and by the middle part of pallet
Through-hole be pierced by；The other end end for ensuring to infuse primary slurry pipe and secondary grouting pipe in the installation process of pallet is exposed.
9. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 3,
It is characterized in that, the lower part rotation ascending branch protection unit includes the upper mounted plate being connected with screw rod lower part, the week of fixed plate
Portion interval is hinged with lower branch guard bar, is located on the downside of upper mounted plate on screw rod and is equipped with bottom plate, driving is bolted on screw rod
The rotation of bottom plate lifting rises nut, and the circumference of the bottom plate is corresponding to be hinged with what upper end was hinged with lower branch guard bar middle part
Support rod.
10. a kind of construction method using prestressed component suspension roof support mine broken rock according to claim 9,
It is characterized in that, the nut rotating mechanism in the step 4) includes the casing for being sleeved on the screw rod, and the upper end of described sleeve pipe is set
Be equipped with and revolve and rise the Hexagon hole that matches of nut, be welded with bearing in the middle part of casing, lower end be provided with for spanner phase
The outer-hexagonal structure of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810914666.6A CN108979685B (en) | 2018-08-13 | 2018-08-13 | Construction method for supporting broken rock stratum of mine by adopting prestress component anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810914666.6A CN108979685B (en) | 2018-08-13 | 2018-08-13 | Construction method for supporting broken rock stratum of mine by adopting prestress component anchor rod |
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| CN108979685B CN108979685B (en) | 2023-10-10 |
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| CN109457976A (en) * | 2018-12-14 | 2019-03-12 | 中国三冶集团有限公司 | A kind of field fabrication steel strand anchoring end end onion device |
| CN110608061A (en) * | 2019-08-14 | 2019-12-24 | 四川大学 | Prestressed grouting anchor rod and installation and recovery method thereof |
| CN111379581A (en) * | 2020-03-24 | 2020-07-07 | 淮南东华欧科矿山支护设备有限责任公司 | Deep roadway prestress full-anchor support construction equipment and construction method thereof |
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| US5599140A (en) * | 1995-09-13 | 1997-02-04 | The Eastern Company | Mine roof support system including an expansion anchor with means assisting resin component mixing and method of installation thereof |
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| CN106523006A (en) * | 2016-11-29 | 2017-03-22 | 中铁二十三局集团第工程有限公司 | Glass fiber anchor rod and construction method |
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| CN109457976A (en) * | 2018-12-14 | 2019-03-12 | 中国三冶集团有限公司 | A kind of field fabrication steel strand anchoring end end onion device |
| CN110608061A (en) * | 2019-08-14 | 2019-12-24 | 四川大学 | Prestressed grouting anchor rod and installation and recovery method thereof |
| CN110608061B (en) * | 2019-08-14 | 2024-04-05 | 四川大学 | Prestressed grouting anchor rod and installation and recovery method thereof |
| CN111379581A (en) * | 2020-03-24 | 2020-07-07 | 淮南东华欧科矿山支护设备有限责任公司 | Deep roadway prestress full-anchor support construction equipment and construction method thereof |
| CN111379581B (en) * | 2020-03-24 | 2021-08-31 | 淮南东华欧科矿山支护设备有限责任公司 | Deep roadway prestress full-anchor support construction equipment and construction method thereof |
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| CN108979685B (en) | 2023-10-10 |
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