CN106321124A - Mine grouting anchor cable supporting method - Google Patents

Mine grouting anchor cable supporting method Download PDF

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Publication number
CN106321124A
CN106321124A CN201611018246.7A CN201611018246A CN106321124A CN 106321124 A CN106321124 A CN 106321124A CN 201611018246 A CN201611018246 A CN 201611018246A CN 106321124 A CN106321124 A CN 106321124A
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CN
China
Prior art keywords
anchor
cable
grouting
bundle
port
Prior art date
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Granted
Application number
CN201611018246.7A
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Chinese (zh)
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CN106321124B (en
Inventor
张建国
郭建伟
黄庆显
杨战标
李建建
宋晓红
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Shandong Anke Mine Support Technology Co Ltd
China Pingmei Shenma Energy and Chemical Group Co Ltd
Original Assignee
Shandong Anke Mine Support Technology Co Ltd
China Pingmei Shenma Energy and Chemical Group Co Ltd
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Application filed by Shandong Anke Mine Support Technology Co Ltd, China Pingmei Shenma Energy and Chemical Group Co Ltd filed Critical Shandong Anke Mine Support Technology Co Ltd
Priority to CN201611018246.7A priority Critical patent/CN106321124B/en
Publication of CN106321124A publication Critical patent/CN106321124A/en
Application granted granted Critical
Publication of CN106321124B publication Critical patent/CN106321124B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/003Machines for drilling anchor holes and setting anchor bolts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting
    • E21D20/025Grouting with organic components, e.g. resin
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection

Abstract

A mine grouting anchor cable supporting method comprises the steps of manufacturing a grouting anchor cable tie, wherein the grouting anchor cable tie is composed of multiple anchor cable bodies, a conical grouting stopping plug, a tray, a lock, an end anchor grouting stopping plug, an anchor cable fixing frame, a tightening ring and the like. An anchor cable body comprises an end anchor grouting anchor cable body, a full-anchor grouting anchor cable body and an exhaust grouting anchor cable body, and the three grouting anchor cable bodies are combined to replace a common anchor cable body; 2, installing and supporting the grouting anchor cable tie, wherein the end anchor grouting stopping plug is sleeved with the end anchor section of the anchor cable tie, the grouting anchor cable tie is fed into a drilled hole, a barb hook hooks the wall of the hole, and the conical grouting stopping plug, the tray and the lock are sequentially installed; grouting of the end anchor section is performed by means of the end anchor grouting cable body, and air is exhausted through the full-anchor grouting anchor cable body; after grouting of the end anchor section is solidified, the lock is used for tensioning and pre-tightening the anchor cable tie; the full-anchor grouting anchor cable body is used for performing grouting on the full anchor section, and the exhaust grouting anchor cable body is used for exhausting air. The method is applicable to ultra-soft cracking and deep high stress roadway supporting, and can achieve ultra-long deep strong anchoring. The cable body is provided with a core tube so that end anchoring, full-anchoring grouting and air exhausting can be achieved, and construction is greatly simplified.

Description

Mining grouting cable anchor bundle branch maintaining method
Technical field
The present invention relates to anchoring support field, mine, particularly a kind of for mine soft rock, crushed zone, deep-well, heavily stressed Roadway support under the complicated hard situation such as district or the mining grouting cable anchor bundle branch maintaining method of reinforcing.
Background technology
Along with the pit mining degree of depth increases year by year, geological conditions more sophisticated, ore deposit pressure is more and more big, and roadway support difficulty is also Increasing.Domestic the tunnel that hollow grouting anchor, hollow grouting cable anchor are used under the heavily stressed complex geological condition in deep is propped up Protect, obtain certain effect, but for some specific condition, however it remains supporting intensity is not, supporting scope is not enough, roadway deformation Measure big problem, roadway support under this Special complex hard situation is also had and uses combination of steel rope supporting, but this group Close anchor cable and on the one hand cannot realize strength end anchor, can only be again to anchor cable Shu Jinhang stretch-draw after bored grouting.Due to grouting pressure Low, slip casting effect, grout mixing are difficult to ensure that, just correspond to realize the full anchor of anchor cable;On the other hand due to anchor cable Shu Zichong Greatly, needing scene in advance to tie up Grouting Pipe and exhaustor, make installation process need many people to coordinate, difficulty of construction is big, and anchor cable bundle note Need before slurry to fix, in case anchor cable bundle skids off from boring, cause working procedure complexity, labor intensity height, efficiency low.
Summary of the invention
In order to the tunnel grouting cable anchor bundle supporting intensity overcoming prior art complex geologic conditions heavily stressed to deep is low, Supporting scope is little, difficulty of construction big, many deficiencies of complex procedures, and the present invention provides a kind of mining grouting cable anchor bundle branch side of protecting Method, can reach in deep, the colliery region of high stress, soft rock and crushed zone roadway support and the requirement of reinforcing, have supporting scope big, Supporting intensity is high, the advantage of convenient construction.
The present invention solves that above-mentioned technical problem be the technical scheme is that
A kind of mining grouting cable anchor bundle branch maintaining method, props up including the processing and fabricating of grouting cable anchor bundle and the installation of grouting cable anchor bundle Protect.
1) processing and fabricating of grouting cable anchor bundle: assemble constitute note with many anchor cables, taper stop grouting plug, pallet, lockset Slurry anchor cable bundle.Wherein, many anchor cables to have the grouting cable anchor cable body of three kinds of different purposes: end anchor grouting cable anchor cable body, Full anchor grouting cable anchor cable body, aerofluxus grouting cable anchor cable body;And increase is enclosed within the component on each anchor cable: be placed in grouting cable anchor Bundle end anchor section lower end, the end anchor stop grouting plug only starched for end anchor section, be fixed on the lock ring preventing it from gliding below end anchor stop grouting plug, It is placed in the middle of grouting cable anchor full anchor section, for the anchor cable fixed mount of each anchor cable fixed position.
The making of three kinds of grouting cable anchor cable bodies, the flexible pipe being vertically connected with by steel wire, steel wire spiral parcel and afterbody On adapter sleeve that the tail end of rigid circular pipe and afterbody rigid circular pipe and steel wire connects firmly, adapter sleeve, the plug of assembling assembles.Its In, flexible pipe is the flexible pipe I of the middle and lower part laying respectively at three kinds of grouting cable anchor cable body cores, flexible pipe II, flexibility The general name of pipe III.But the component of the upper port position of the flexible pipe of cable body and top thereof is different, is a difference in that:
1. the flexible pipe I in end anchor grouting cable anchor cable body is provided above rigid circular pipe I, makes the upper port of flexible pipe I with just Property pipe I lower port connect, the interface of the two is positioned at the lower section of lock ring locked position.Being provided above just at rigid circular pipe I Property round bar I, make between the upper port of rigid circular pipe I and rigidity round bar I spaced, this is located at interval in end anchor section, and interval is long Degree is less than 40mm.The upper port of rigid circular pipe I is used as the grout outlet of end anchor slip casting.Make rigidity round bar I and its peripheral steel wire One is connected firmly in cable body termination.
2. rigidity round bar II, rigidity circle are set gradually from bottom to top above the flexible pipe II in full anchor grouting cable anchor cable body Pipe II, another rigidity round bar I.
Between upper port and rigidity round bar II lower end of flexible pipe II spaced, make this be located at interval under lock ring Side, its position are less than the position of aerofluxus grouting cable anchor cable body air vent, and gap length is less than 40mm.Upper flexible pipe II Port is used as the grout outlet of full anchor slip casting.
Between the lower port of rigidity round bar II upper end and rigid circular pipe II spaced, make the length at this interval be less than 40mm.The lower port of rigid circular pipe II is used as the lower gas outlet of end anchor slip casting.
Between the upper port and another rigidity round bar I of rigid circular pipe II spaced, make this be located at interval at end anchor section in, Higher than the position of end anchor grouting cable anchor grout outlet, gap length is less than 40mm.The upper port of rigid circular pipe II is used as end anchor The air vent of slip casting.
The upper end of flexible pipe II set struts the ring that rises of steel wire beneficially pulp, the upper port of the ring that makes to rise and flexible pipe The upper port alignment of II.
Rigidity round bar II uses tubbiness bar, its a length of 80mm~120mm.Make the steel of another rigidity round bar I and its periphery Silk connects firmly one in cable body termination.
3. the flexible pipe III in aerofluxus grouting cable anchor cable body is provided above rigidity round bar III;Make the upper end of rigidity round bar III In end anchor section and the steel wire of its periphery connects firmly one in cable body termination;The lower end making rigidity round bar III is positioned at lock ring and pins position The lower section put but the position of rigid circular pipe II lower port higher than full anchor grouting cable anchor cable body.The lower end of rigidity round bar III with Between the upper port of flexible pipe III spaced, make this gap length less than 40mm.The upper port of flexible pipe III is used Make the air vent of full anchor slip casting.
The upper end of flexible pipe III set struts the ring that rises of steel wire beneficially aerofluxus, the upper port of the ring that makes to rise and flexible pipe The upper port alignment of III.
Make anchor cable fixed mount: be machined with the through hole identical with anchor cable quantity on it with one and slip casting is circulated hole Circular frame, circular frame periphery welding or connect firmly at least two barb;The resilient material of barb apparatus is made.Make Circular frame diameter adds the external diameter after barb more than bore diameter less than boring, circular frame.Through-hole diameter is greater than equal to anchor The diameter of rustling sound body.
Manufacturing terminal anchor stop grouting plug: anchor cable fixed mount circular frame upside or up and down both sides apply elastomeric layer system Become.The diameter of elastomeric layer is more than or equal to the external diameter of anchor cable fixed mount.Quantity and circular frame is processed on elastomeric layer The through hole that anchor cable number of openings is identical and position is corresponding.
Make lock ring: the sleeve pipe of footpath contracting or welding is fixed on below each anchor cable end anchor section, is held bottom anchor stop grouting plug Position.
2) the installation supporting of grouting cable anchor bundle:
1., after the grouting cable anchor bundle drilling construction in tunnel, the end anchor section of each for grouting cable anchor bundle anchor cable is inserted in one by one In anchor cable through hole on end anchor stop grouting plug, and end anchor stop grouting plug is moved to lock ring position, then grouting cable anchor bundle is sent into In boring.Being stopped by lock ring, end anchor stop grouting plug enters bore inner with grouting cable anchor bundle, and will note by the barb being stuck on hole wall Slurry anchor cable bundle is fixed, and prevents it from skidding off boring.
2. installing during grouting cable anchor bundle, the full anchor section at each anchor cable is inserted in anchor cable at a certain distance and is fixed Frame, and tied up and be fixed on anchor cable bundle.After grouting cable anchor bundle is completely fed at the bottom of hole, taper stop grouting plug, pallet are installed successively And lockset.
3. by carrying out slip casting in the end anchor grouting cable anchor cable body end anchor section to grouting cable anchor bundle.Grouting amount is according to end anchor section Needed for length, serosity amount calculates in advance.Injecting paste material uses rapid-hardening organic chemical or cement grout to coordinate outside the strongest rapid hardening Add agent.Now, flexible pipe I upper end of end anchor grouting cable anchor cable body grout outlet pulp in end anchor section, full anchor grouting cable anchor The rigid circular pipe II of cable body makees exhaustor, by the air vent of its rigid circular pipe II upper end, the lower gas outlet of rigid circular pipe II lower end It is exhausted, makes injecting paste material be full of end anchor section.
4. after end anchor section slip casting completes and solidifies completely, by lockset to anchor cable Shu Jinhang stretch-draw pretension.
5., after grouting cable anchor Shu Zhangla pretension completes, by full anchor grouting cable anchor cable body, the full anchor section of grouting cable anchor bundle is entered Row slip casting.Injecting paste material is identical with the injecting paste material of end anchor section.Now, by flexible pipe II upper end of full anchor grouting cable anchor cable body Grout outlet pulp, the core pipe of aerofluxus grouting cable anchor cable body makees exhaustor, by the vent of its flexible pipe III upper end, makes Injecting paste material is full of whole boring and crack about.
Little in supporting scope, be in crushed zone in the case of, without aerofluxus grouting cable anchor cable body and anchor cable fixed mount.
The invention has the beneficial effects as follows:
1. combined by the grouting cable anchor cable body of many different purposes, available end anchor grouting cable anchor cable body carry out holding anchor slip casting, End anchor stop grouting plug only slurry, it is achieved end anchor, thus ensure that anchor cable Shu Shixian strength end anchoring is fixed, the most timely stretch-draw pretension, protect Card anchor cable bundle just supporting intensity.Realizing overlength deep strong anchoring, supporting scope is up to 15m, the most greatly.For the softest broken Broken notable with deep high stress tunnel supporting effect.
2. utilize the combination of many grouting cable anchor cable bodies, every grouting cable anchor cable body own core pipe, can realize end anchor, slip casting and Scavenging action, the scene of being not required to ties up Grouting Pipe and exhaustor, and working procedure greatly simplifies, and is conducive to improving efficiency, reduces work Intensity.
3. can realize anchor cable bundle by the end anchor stop grouting plug of band barb to fix in time, and can reduce with anchor cable fixed mount Resistance is installed, prevents anchor cable bundle installation process accident landing, increase safety coefficient.
4. except supporting intensity is high, supporting scope is big, in addition to convenient construction, its simple in construction, easy to process, cost is relatively low.
Accompanying drawing explanation
Fig. 1: the structural representation front view that mining grouting cable anchor bundle is a kind of.
A-A ' the sectional drawing of mining grouting cable anchor bundle in Fig. 2: Fig. 1.
B-B ' the sectional drawing of mining grouting cable anchor bundle in Fig. 3: Fig. 1.
C-C ' the sectional drawing of mining grouting cable anchor bundle in Fig. 4: Fig. 1.
Fig. 5 a: end anchor stop grouting plug structural representation top view.
Fig. 5 b: end anchor stop grouting plug structural representation front view.
Fig. 6 a: anchor cable fixed rack structure schematic diagram top view.
Fig. 6 b: anchor cable fixed rack structure schematic diagram front view.
In figure: 1-end anchor grouting cable anchor cable body, 2-full anchor grouting cable anchor cable body, 3-aerofluxus grouting cable anchor cable body, 4-end anchor Stop grouting plug, 5-lock ring, 6-pallet, 7-lockset, 8a-rigid circular pipe I, 8b-rigid circular pipe II, 8c-rigid circular pipe III, 9a-rigidity Round bar I, 9b-rigidity round bar II, 9c-rigidity round bar III, 10a-flexibility pipe I, 10b-flexibility pipe II, 10c-flexibility pipe III, 11-adapter sleeve, 12-plug, 13-anchor cable fixed mount, 14-steel wire, 15-rise ring, 16-taper stop grouting plug.10-flexibility pipe Total code name of 10a, 10b, 10c.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment:
A kind of mining grouting cable anchor bundle branch maintaining method, props up including the processing and fabricating of grouting cable anchor bundle and the installation of grouting cable anchor bundle Protect.
1) processing and fabricating of grouting cable anchor bundle:
Figure 1 illustrates a kind of structure of the mining grouting cable anchor bundle that the present invention uses." the many anchors of the grouting cable anchor bundle of diagram Rustling sound body " it is three anchor cables, and be the grouting cable anchor cable body of three different purposes.These three grouting cable anchor cable body is: End anchor grouting cable anchor cable body 1, full anchor grouting cable anchor cable body 2, aerofluxus grouting cable anchor cable body 3.This example uses end anchor grouting cable anchor rope Body 1, full anchor grouting cable anchor cable body 2, each one of aerofluxus grouting cable anchor cable body 3, and increase be enclosed within three grouting cable anchor cable bodies Component: end anchor stop grouting plug 4, lock ring 5, anchor cable fixed mount 13, assembles with taper stop grouting plug 16, pallet 6, lockset 7 and constitutes mine injection Slurry anchor cable bundle.
End anchor stop grouting plug 4 is placed in grouting cable anchor cable body end anchor section lower end, only starches use for end anchor section.Lock ring 5 is fixed on end Prevent from it from gliding below anchor stop grouting plug to use.Anchor cable fixed mount 13 is placed in the middle of grouting cable anchor cable body full anchor section, for anchor cable Fixed position is used.
Flexible pipe 10 and that the making of three kinds of grouting cable anchor cable bodies is vertically connected with by steel wire 14, steel wire 14 spiral packaging The plug of assembling on adapter sleeve 11 that afterbody rigid circular pipe 8c and afterbody rigid circular pipe 8c and steel wire 14 tail end connect firmly, adapter sleeve 12 assemble.Wherein, described flexible pipe 10 is the flexibility of the middle and lower part laying respectively at three kinds of grouting cable anchor cable body cores Pipe I (10a), flexible pipe II (10b), the general name of flexible pipe III (10c).But the upper port position of the flexible pipe 10 of cable body Put and the component of top be different, be a difference in that:
That 1. holds the flexible pipe I (10a) in anchor grouting cable anchor cable body 1 is provided above rigid circular pipe I (8a), makes flexible pipe I (10a) upper port is connected with the lower port of rigid circular pipe I (8a), and the interface of the two is positioned at the lower section of lock ring 5 locked position, anti- When only installing lock ring 5, cable body footpath shrinkage porosite relaxes.It is provided above rigidity round bar I (9a) at rigid circular pipe I (8a), makes rigid circular pipe I (8a) between upper port and rigidity round bar I (9a) spaced, this be located at interval at end anchor section in, gap length is less than 40mm, is advisable with 15mm~25mm.The upper port of rigid circular pipe I (8a) is carried out holding anchor slip casting as with end anchor grouting cable anchor 1 Grout outlet.Rigidity round bar I (9a) and its peripheral steel wire 14 is made to connect firmly one in cable body termination.
2. flexible pipe II (10b) top in full anchor grouting cable anchor cable body 2 sets gradually rigidity round bar II from bottom to top (9b), rigid circular pipe II (8b), another rigidity round bar I (9a).
Between upper port and rigidity round bar II (9b) lower end of flexible pipe II (10b) spaced, make this gap digit Below lock ring 5, its position less than the position of aerofluxus grouting cable anchor cable body 3 air vent, gap length is less than 40mm, with 15mm ~25mm is advisable.Using the upper port of flexible pipe II (10b) as the pulp carrying out full anchor slip casting with full anchor grouting cable anchor cable body 2 Mouthful.
Between the lower port of rigidity round bar II (9b) upper end and rigid circular pipe II (8b) spaced, make the length at this interval Degree is less than 40mm.The lower port of rigid circular pipe II (8b) is carried out holding under anchor slip casting as with end anchor grouting cable anchor cable body 1 Gas outlet.
Between the upper port and another rigidity round bar I (9a) of rigid circular pipe II (8b) spaced, make this be located at interval at In end anchor section, being higher than the position holding anchor grouting cable anchor cable body grout outlet, gap length is less than 40mm, with 15mm~25mm is Preferably.The upper port of rigid circular pipe II (8b) is carried out holding the air vent of anchor slip casting as with end anchor grouting cable anchor cable body 1.
The ring 15 that rises strutting steel wire 14 beneficially pulp is put, the upper end of the ring 15 that makes to rise in the upper end of flexible pipe II (10b) Mouth aligns with the upper port of flexible pipe II (10b).
Rigidity round bar II (9b) uses tubbiness bar, and its a length of 80mm~120mm is advisable;This length is necessary to ensure that rigidity circle The serosity that pipe II (8b) flows out may not flow in flexible pipe II (10b).Rigidity round bar II (9b) is with quarter butt that two ends are thick head For preferably.The steel wire 14 of another rigidity round bar I (9a) with its periphery is connected firmly integrally in cable body termination.
3. the flexible pipe III (10c) in aerofluxus grouting cable anchor cable body 3 is provided above rigidity round bar III (9c).Make rigidity circle The upper end of bar III (9c) is in end anchor section and the steel wire of its periphery connects firmly one in cable body termination so that it is lower end is positioned at lock ring 5 and locks Live the lower section of position but the position of rigid circular pipe II (8b) lower port higher than full anchor grouting cable anchor cable body 2.At rigidity round bar III (9c) between the upper port of lower end and flexible pipe III (10c) spaced, make this gap length less than 40mm, with 15mm ~25mm is advisable.Using the upper port of flexible pipe III (10c) as the aerofluxus carrying out full anchor slip casting with full anchor grouting cable anchor cable body 2 Mouthful.
At the upper end set rise ring 15 of flexible pipe III (10c), the upper port of the ring 15 that makes to rise and flexible pipe III (10c) Upper port is alignd.The effect of ring 15 of rising is to strut steel wire 14, be beneficial to the vent of full anchor slip casting.
Flexible pipe III (10c) upper port of aerofluxus grouting cable anchor cable body 3 is except making the air vent of full anchor slip casting, it is also possible to Grouting port as secondary grouting.
The flexible pipe 10 being vertically connected with and afterbody rigid circular pipe 8c are by port grafting or to dock additional telescopic joint. The flexible upper port of pipe I (10a) is also to be connected in the same fashion with the lower port of rigid circular pipe I (8a).
The structure of mining grouting cable anchor bundle A-A ' section part shown in Fig. 2, i.e. in end anchor section, aerofluxus grouting cable anchor cable body The rigidity round bar III (9c) of 3, the rigid circular pipe II (8b) of full anchor grouting cable anchor cable body 2, the rigidity circle of end anchor grouting cable anchor cable body 1 The structure of pipe I (8a).Steel wire 14 is eight, surface has spiral ribs, left-turn spiral shape to be wrapped on the core pipe of grouting cable anchor cable body.
The structure of mining grouting cable anchor bundle B-B ' section part shown in Fig. 3.I.e. at full anchor section inner top, aerofluxus grouting cable anchor The flexible pipe III (10c) of cable body 3 and the ring 15 that rises, the rigid circular pipe II (8b) of full anchor grouting cable anchor cable body 2, end anchor slip casting anchor The structure of the rigid circular pipe I (8a) of rustling sound body 1.
The structure of mining grouting cable anchor bundle C-C ' section part shown in Fig. 4.I.e. in full anchor section, under its top, aerofluxus The flexible pipe III (10c) of grouting cable anchor cable body 3, the rigidity round bar II (9b) of full anchor grouting cable anchor cable body 2, end anchor grouting cable anchor The structure of the flexible pipe I (10a) of 1.
Make anchor cable fixed mount 13: be machined with the through hole identical with anchor cable quantity on it with one and slip casting is circulated hole Circular frame, welds at circular frame periphery or connects firmly at least two barb;The resilient material of barb apparatus is made.Make circle Shape form diameter adds the external diameter after barb more than bore diameter less than boring, circular frame.Through-hole diameter is larger than or is equal to The diameter of each anchor cable.Anchor cable fixed mount 13 is placed in the centre of grouting cable anchor bundle full anchor section, is enclosed within each grouting cable anchor cable body On, used by anchor cable fixed position.Can be one or more;During for more than one piece, interval is arranged.
Fig. 6 a, Fig. 6 b illustrate a kind of structure of anchor cable fixed mount 13.The circular frame of anchor cable fixed mount 13 is to use steel bar welding The annulus framework connect, annulus frame perimeter fixes three barbs, and barb spring steel wire is processed.Have in annulus framework and anchor cable rope The annulus that body quantity is identical, i.e. three annulus.The through hole of the interior circular hole that is three piece grouting cable anchor cable body of annulus, annulus steel bar welding Connect.
The circular frame of anchor cable fixed mount 13 can also make, process on it through hole and note of grouting cable anchor cable body of plectane Slurry circulation hole, the barb of its periphery fixing spring steel wire processing.
Manufacturing terminal anchor stop grouting plug 4: use anchor cable fixed mount 13, and apply elasticity in the upside of its circular frame or upper and lower both sides Material layer is made.The diameter of elastomeric layer is more than or equal to the external diameter of anchor cable fixed mount 13.Quantity is processed on elastomeric layer The through hole that anchor cable number of openings is identical and position is corresponding with circular frame.End anchor stop grouting plug 4 is placed in grouting cable anchor end The lower end of anchor section, only starches used during for end anchor section slip casting.
Fig. 5 a, 5b illustrate a kind of structure of end anchor stop grouting plug 4.It is the circle at the anchor cable fixed mount 13 shown in Fig. 6 a, 6b The both sides up and down of annular frame apply what elastomeric layer was constituted.Three uniform circular holes and three annulus are had on elastomeric layer Interior circular hole corresponding.Elastomeric material uses elastoplast or rubber.
Lock ring 5 is cylindrical sleeve, is enclosed within each grouting cable anchor cable body, is positioned at below end anchor stop grouting plug 4, holds anchor stop grouting plug On position bottom 4.Effect is that anti-not-go-end anchor stop grouting plug 4 glides, it is ensured that at installation process middle-end anchor stop grouting plug 4 with grouting cable anchor Shu Yiqi enters boring deep.The mode of tying up can also fix steel wire, replace lock ring to prevent steel wire broken scattered.
The making of lock ring 5 and installation: with footpath compression method, cylindrical sleeve is anchored on anchor cable, or roll bending is contained in Sleeve pipe it is welded on anchor cable.
Afterbody rigid circular pipe 8c and the steel wire 14 of three grouting cable anchor cable bodies for thread connection with adapter sleeve 11 or weld, connect firmly Integrally.The afterbody of the adapter sleeve 11 of afterbody, equipped with plug 12, prevents slip casting rear slurry from refluxing.
The taper stop grouting plug 16 that be positioned at grouting cable anchor bundle lower end, is sequentially arranged at drilling orifice from inside to outside, pallet 6, Lockset 7.On taper stop grouting plug 16, pallet 6, lockset 7, three holes of correspondence will be processed, respectively for end anchor grouting cable anchor cable body 1, full anchor grouting cable anchor cable body 2, aerofluxus grouting cable anchor cable body 3 pass.That is three is the cone that three kinds of grouting cable anchor cable bodies share Shape stop grouting plug, pallet, lockset.
2) the installation supporting of grouting cable anchor bundle:
1., after the grouting cable anchor bundle drilling construction in tunnel, the end anchor section of each for grouting cable anchor bundle anchor cable is inserted in one by one In the anchor cable through hole of end anchor stop grouting plug 4, and end anchor stop grouting plug 4 is moved closer to the position of lock ring 5;Then grouting cable anchor Bundle is sent in boring;Being stopped by lock ring 5, end anchor stop grouting plug 4 enters in boring with anchor cable bundle, and will by the barb being stuck on hole wall Anchor cable bundle is fixed, and prevents it from skidding off boring.
2. installing during grouting cable anchor bundle, the full anchor section at each anchor cable is inserted in anchor cable at a certain distance and is fixed Frame 13, and tied up and be fixed on anchor cable bundle;After grouting cable anchor bundle is completely fed at the bottom of hole, successively install taper stop grouting plug 16, Pallet 6 and lockset 7.
3. by carrying out slip casting in the end anchor grouting cable anchor cable body 1 end anchor section to grouting cable anchor bundle;Grouting amount is according to end anchor Needed for segment length, serosity amount calculates in advance.Injecting paste material uses rapid-hardening organic chemical or cement grout to coordinate the strongest rapid hardening Additive, it is also possible to other injecting paste material slip castings.Now, the end anchor of flexible pipe I (10a) upper end of end anchor grouting cable anchor cable body Slip casting grout outlet pulp;The rigid circular pipe II (8b) of full anchor grouting cable anchor cable body makees exhaustor, by rigid circular pipe II (8b) upper end Air vent, the lower gas outlet of rigid circular pipe II (8b) lower end be exhausted, make injecting paste material be full of end anchor section.
4. after end anchor section slip casting completes and solidifies completely, by lockset 7 to grouting cable anchor Shu Jinhang stretch-draw pretension.
5. after grouting cable anchor Shu Zhangla pretension completes, by the full anchor grouting cable anchor cable body 2 full anchor section to grouting cable anchor bundle Carry out slip casting.Injecting paste material is identical with the injecting paste material of end anchor section.Now, by the flexible pipe II of full anchor grouting cable anchor cable body (10b) the full anchor slip casting grout outlet pulp of upper end, exhaustor made by the core pipe of aerofluxus grouting cable anchor cable body 3, by its flexible pipe III (10c) vent of the full anchor slip casting of upper end, makes injecting paste material be full of whole boring and crack about.
Little in supporting scope, be in crushed zone in the case of, can fix without aerofluxus grouting cable anchor cable body 3 and anchor cable Frame 13.
Other implementation:
1. in embodiment, grouting cable anchor bundle is by end anchor grouting cable anchor cable body, full anchor grouting cable anchor cable body and aerofluxus grouting cable anchor rope Each one of three kinds of grouting cable anchor cable bodies of body combine, and it can increase the radical of each grouting cable anchor cable body as required, Can also increase the most non-grouting cable anchor of common anchor cable cable body one or more.
2. after the installation supporting at grouting cable anchor bundle completes, according to roadway deformation situation, it is also possible to being used as exhaustor, not The core pipe of the aerofluxus grouting cable anchor cable body blocked carries out secondary grouting, reinforces the new wall-rock crack grown.Now, aerofluxus slip casting The air vent of flexible pipe III (10c) upper end of anchor cable 3, makees the grout outlet of secondary grouting.
3. the certain distance under the upper port of the rigid circular pipe I of end anchor grouting cable anchor cable body, on end anchor stop grouting plug (4) Standby grout outlet is set;Under the upper port of the flexible pipe II of full anchor grouting cable anchor cable body, certain distance arranges standby pulp Mouthful.Standby grout outlet is to process the circular port on rigid circular pipe I, flexible pipe II tube wall or wedge-shaped opening.

Claims (5)

1. a mining grouting cable anchor bundle branch maintaining method, props up including the processing and fabricating of grouting cable anchor bundle and the installation of grouting cable anchor bundle Protect;
1) processing and fabricating of grouting cable anchor bundle: assemble constitute slip casting anchor with many anchor cables, taper stop grouting plug, pallet, lockset Suo Shu;Wherein, many anchor cables to have the grouting cable anchor cable body of three kinds of different purposes: end anchor grouting cable anchor cable body (1), complete Anchor grouting cable anchor cable body (2), aerofluxus grouting cable anchor cable body (3);And increase is enclosed within the component on each anchor cable: be placed in slip casting Anchor cable bundle end anchor section lower end, end anchor stop grouting plug (4) only starched for end anchor section, be fixed on end anchor stop grouting plug (4) lower section and prevent it The lock ring (5) glided, is placed in the middle of grouting cable anchor full anchor section, for the anchor cable fixed mount of each anchor cable fixed position (13);
The making of three kinds of grouting cable anchor cable bodies, the flexible pipe being vertically connected with by steel wire (14), steel wire (14) spiral packaging And the adapter sleeve (11), even that connects firmly of the tail end of afterbody rigid circular pipe (8c) and afterbody rigid circular pipe (8c) and steel wire (14) (10) In female connector, the plug (12) of assembling assembles;Wherein, flexible pipe (10) is to lay respectively at three kinds of grouting cable anchor cable body cores The flexible pipe I (10a) of middle and lower part, flexible pipe II (10b), the general name of flexible pipe III (10c);But the flexible circle of cable body The upper port position of pipe (10) and the component of top thereof are different, are a difference in that:
1. the flexible pipe I (10a) in end anchor grouting cable anchor cable body (1) is provided above rigid circular pipe I (8a), makes flexible pipe I (10a) upper port is connected with the lower port of rigid circular pipe I (8a), and the interface of the two is positioned at the lower section of lock ring (5) locked position; It is provided above rigidity round bar I (9a) at rigid circular pipe I (8a), makes upper port and the rigidity round bar I (9a) of rigid circular pipe I (8a) Between spaced, this be located at interval at end anchor section in, gap length be less than 40mm;The upper port of rigid circular pipe I (8a) is used Make the grout outlet of end anchor slip casting;Rigidity round bar I (9a) and its peripheral steel wire (14) is made to connect firmly one in cable body termination;
2. flexible pipe II (10b) top in full anchor grouting cable anchor cable body (2) sets gradually rigidity round bar II from bottom to top (9b), rigid circular pipe II (8b), another rigidity round bar I (9a);
Between upper port and rigidity round bar II (9b) lower end of flexible pipe II (10b) spaced, make this be located at interval at tightly Hoop (5) lower section, its position are less than the position of aerofluxus grouting cable anchor cable body (3) air vent, and gap length is less than 40mm;Flexible The upper port of pipe II (10b) is used as the grout outlet of full anchor slip casting;
Between the lower port of rigidity round bar II (9b) upper end and rigid circular pipe II (8b) spaced, make the length at this interval not More than 40mm;The lower port of rigid circular pipe II (8b) is used as the lower gas outlet of end anchor slip casting;
Between the upper port and another rigidity round bar I (9a) of rigid circular pipe II (8b) spaced, make this be located at interval at end anchor In section, being higher than the position holding anchor grouting cable anchor cable body grout outlet, gap length is less than 40mm;Upper rigid circular pipe II (8b) Port is used as the air vent of end anchor slip casting;
Put the ring that rises (15) strutting steel wire (14) beneficially pulp in the upper end of flexible pipe II (10b), make the upper of ring (15) of rising Port aligns with the upper port of flexible pipe II (10b);
Rigidity round bar II (9b) uses tubbiness bar, its a length of 80mm~120mm;Make another rigidity round bar I (9a) peripheral with it Steel wire (14) connect firmly in cable body termination one;
3. the flexible pipe III (10c) in aerofluxus grouting cable anchor cable body (3) is provided above rigidity round bar III (9c);Make rigidity round bar The upper end of III (9c) is in end anchor section and the steel wire of its periphery connects firmly one in cable body termination so that it is lower end is positioned at lock ring (5) lock Live the lower section of position but the position of rigid circular pipe II (8b) lower port higher than full anchor grouting cable anchor cable body (2);At rigidity round bar Between the upper port of the lower end of III (9c) and flexible pipe III (10c) spaced, make this gap length less than 40mm;Soft Property pipe III (10c) upper port be used as full anchor slip casting air vent;
Put the ring that rises (15) strutting steel wire (14) beneficially aerofluxus in the upper end of flexible pipe III (10c), make the upper of ring (15) of rising Port aligns with the upper port of flexible pipe III (10c);
Make anchor cable fixed mount (13): be machined with the through hole identical with anchor cable quantity on it with one and slip casting is circulated hole Circular frame, circular frame periphery welding or connect firmly at least two barb;Barb elastomeric material is made;Make circular frame Frame diameter adds the external diameter after barb more than bore diameter less than boring, circular frame;Through-hole diameter is greater than equal to each anchor cable rope The diameter of body;
Manufacturing terminal anchor stop grouting plug (4): anchor cable fixed mount (13) circular frame upside or up and down both sides apply elastomeric material Layer is made;The diameter of elastomeric layer is more than or equal to the external diameter of anchor cable fixed mount (13);Process on elastomeric layer quantity with The through hole that anchor cable number of openings is identical and position is corresponding of circular frame;
Make lock ring (5): be fixed on below each anchor cable end anchor section, hold anchor stop grouting plug (4) end by the sleeve pipe of footpath contracting or welding Portion;
2) the installation supporting of grouting cable anchor bundle:
1., after the grouting cable anchor bundle drilling construction in tunnel, the end anchor section of each for grouting cable anchor bundle anchor cable is inserted in one by one Hold in the anchor cable through hole of anchor stop grouting plug (4), and end anchor stop grouting plug (4) is moved closer to the position of lock ring (5), then note Slurry anchor cable bundle is sent in boring;Being stopped by lock ring (5), end anchor stop grouting plug (4) enters in boring with grouting cable anchor bundle, and by being stuck in Anchor cable bundle is fixed by the barb on hole wall, prevents it from skidding off boring;
2., during installing grouting cable anchor bundle, the full anchor section at each anchor cable is inserted in anchor cable fixed mount at a certain distance , and tied up and be fixed on anchor cable bundle (13);After grouting cable anchor bundle is completely fed at the bottom of hole, taper stop grouting plug is installed successively (16), pallet (6) and lockset (7);
3. by carrying out slip casting in holding anchor grouting cable anchor cable body (1) the end anchor section to grouting cable anchor bundle;Grouting amount is according to end anchor section Needed for length, serosity amount calculates in advance;Injecting paste material uses rapid-hardening organic chemical or cement grout to coordinate outside the strongest rapid hardening Add agent;Now, the end anchor slip casting grout outlet pulp of flexible pipe I (10a) upper end of end anchor grouting cable anchor cable body, full anchor slip casting anchor The rigid circular pipe II (8b) of rustling sound body makees exhaustor, by under the air vent of rigid circular pipe II (8b) upper end, rigid circular pipe II (8b) The lower gas outlet of end is exhausted, and makes injecting paste material be full of end anchor section;
4. after end anchor section slip casting completes and solidifies completely, by lockset (7) to grouting cable anchor Shu Jinhang stretch-draw pretension;
5., after grouting cable anchor Shu Zhangla pretension completes, by full anchor grouting cable anchor cable body (2), the full anchor section of grouting cable anchor bundle is entered Row slip casting;Injecting paste material is identical with the injecting paste material of end anchor section;Now, by the flexible pipe II of full anchor grouting cable anchor cable body (10b) the full anchor slip casting grout outlet pulp of upper end, exhaustor made by the core pipe of aerofluxus grouting cable anchor cable body (3), by flexible pipe III (10c) vent of the full anchor slip casting of upper end, makes injecting paste material be full of whole boring and crack about;In supporting scope Little, be in crushed zone in the case of, without aerofluxus grouting cable anchor cable body (3) and anchor cable fixed mount (13).
Mining grouting cable anchor bundle branch maintaining method the most according to claim 1, it is characterised in that: at described grouting cable anchor bundle Installation supporting complete after, according to roadway deformation situation, to aerofluxus grouting cable anchor cable body (3) being used as exhaustor, do not blocked Core pipe carry out secondary grouting, the wall-rock crack that grouting and reinforcing is newly grown.
Mining grouting cable anchor bundle branch maintaining method the most according to claim 1, it is characterised in that: described end anchor grouting cable anchor Gap length between rigidity round bar I (9a) and rigid circular pipe I (8a) upper port of cable body (1) is 15mm~25mm;Full anchor note Slurry anchor cable (2) flexible pipe II (10b) and rigidity round bar II (9b) between gap length, rigidity round bar II (9b) and The gap length between gap length, rigid circular pipe II (8b) and rigidity round bar I (9a) between rigid circular pipe II (8b), is 15mm~25mm;Described rigidity round bar II (9b) be two ends be the quarter butt of thick head.
Mining grouting cable anchor bundle branch maintaining method the most according to claim 1, it is characterised in that: described anchor cable fixed mount (13) circular frame is the annulus framework using reinforcement welding, and annulus frame perimeter fixes three barbs, barb spring steel wire Processing;The reinforcing bar annulus that in annulus framework, welding is identical with anchor cable quantity, the interior circular hole i.e. through hole of anchor cable of annulus.
Mining grouting cable anchor bundle branch maintaining method the most according to claim 1, it is characterised in that: at described end anchor slip casting anchor Under rigid circular pipe I (8a) upper port of rustling sound body (1), on end anchor stop grouting plug (4), standby grout outlet is set;Full anchor slip casting anchor Under the upper port of the flexible pipe II (10b) of rustling sound body (2), standby grout outlet is set.
CN201611018246.7A 2016-11-20 2016-11-20 Mining grouting cable anchor bundle branch maintaining method Active CN106321124B (en)

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CN108060936A (en) * 2017-12-15 2018-05-22 杭州富阳鸿祥技术服务有限公司 A kind of top opening type anchor pole
CN109505641A (en) * 2018-12-25 2019-03-22 山东安科矿山支护技术有限公司 A kind of soft-rock tunnel bottom plate anchor pouring reinforcement method
CN111379566A (en) * 2020-03-30 2020-07-07 河南工程学院 Anchor rod supporting structure of coal mine underground roadway
CN111608708A (en) * 2020-04-21 2020-09-01 中交四公局第一工程有限公司 Device for expanding, digging and pre-reinforcing lateral surrounding rock of tunnel
CN112081602A (en) * 2020-07-27 2020-12-15 枣庄矿业(集团)付村煤业有限公司 Advanced support technology for fully mechanized mining face of thick coal seam

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CN202673309U (en) * 2012-01-01 2013-01-16 谢理想 Combination type high-strength grouting anchor cable
CN203701092U (en) * 2014-01-22 2014-07-09 北京现代金宇工程建设有限公司 Extrusion lock stress dispersion type high-tonnage anchor cable

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Publication number Priority date Publication date Assignee Title
CN202673309U (en) * 2012-01-01 2013-01-16 谢理想 Combination type high-strength grouting anchor cable
CN102787597A (en) * 2012-06-25 2012-11-21 潘明亮 Multi-cable recyclable anchor cable head connecting device
CN203701092U (en) * 2014-01-22 2014-07-09 北京现代金宇工程建设有限公司 Extrusion lock stress dispersion type high-tonnage anchor cable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108060936A (en) * 2017-12-15 2018-05-22 杭州富阳鸿祥技术服务有限公司 A kind of top opening type anchor pole
CN109505641A (en) * 2018-12-25 2019-03-22 山东安科矿山支护技术有限公司 A kind of soft-rock tunnel bottom plate anchor pouring reinforcement method
CN111379566A (en) * 2020-03-30 2020-07-07 河南工程学院 Anchor rod supporting structure of coal mine underground roadway
CN111379566B (en) * 2020-03-30 2021-04-27 河南工程学院 Anchor rod supporting structure of coal mine underground roadway
CN111608708A (en) * 2020-04-21 2020-09-01 中交四公局第一工程有限公司 Device for expanding, digging and pre-reinforcing lateral surrounding rock of tunnel
CN112081602A (en) * 2020-07-27 2020-12-15 枣庄矿业(集团)付村煤业有限公司 Advanced support technology for fully mechanized mining face of thick coal seam

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