CN102108874A - Tensile cross grouting anchor rod device - Google Patents
Tensile cross grouting anchor rod device Download PDFInfo
- Publication number
- CN102108874A CN102108874A CN 201110061215 CN201110061215A CN102108874A CN 102108874 A CN102108874 A CN 102108874A CN 201110061215 CN201110061215 CN 201110061215 CN 201110061215 A CN201110061215 A CN 201110061215A CN 102108874 A CN102108874 A CN 102108874A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- anchor pole
- anchor
- anchor rod
- jointing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a tensile cross grouting anchor rod device, in particular to a device which has combined functions of a grouting pipe and an anchor rod and is capable of connecting a tunnel support and a surrounding rock or connecting closely spaced tunnel supports and a surrounding rock into a whole. The device comprises an anchor rod, a connector and a steel strand. The steel strand is wound and tied on an initial tunnel support and is fixed on the anchor rod by the connector, and the anchor rod and the connector are in threaded connection. After grouting, the hollow anchor rod is integrated with the surrounding rock, and the tunnel support and the surrounding rock in a grouting range are connected firmly. For closely spaced tunnels, the anchor rod runs through middle rock and the two ends of the anchor rod are connected to the initial tunnel support to generate a cross effect; while for common tunnels, one end of the anchor rod is connected with the initial tunnel support and the other end of the anchor rod is inserted into the tunnel surrounding rock to increase the tensile effect of the anchor rod. The device can improve the integrity of the tunnel structure and the surrounding rock and reduce the deformation of the surrounding rock and the structure.
Description
Technical field
The present invention relates to the constructing tunnel householder method, specifically refer to the tunnel reinforcement measure, promptly a kind of to draw, tension grouted anchor bar device.
Background technology
In the tunnel construction process, the tunnel surrounding self-stable ability is relatively poor under the part geological conditions, even does not have self-stable ability, and tunnel excavation, cavitation be difficulty; The little spacing of part tunnel folder rock is thin to be difficult to stablize, and has the bias voltage influence at digging process, and the tunnel builds up the back and is out of shape problems such as inharmonious.For improving country rock intensity, overcome influences such as bias voltage, inhomogeneous deformation, need reinforce country rock.Reinforcement measure at present commonly used comprises and sets anchor pole and grouting and reinforcing.Play compacted shoulder bed effects by set anchor pole in loose wall rock, the rubbing action between anchor pole and the country rock simultaneously is country rock fixedly, plays folder muscle effect, and therefore, bolt support generally is applicable to the breaking surrounding rock location, and effect is limited in weak sand, argillic horizon.Grouting and reinforcing comprises leading grouting with small pipe, leading curtain-grouting etc., can improve the country rock breaking strength, increases the angle of internal friction and the cohesion of geotechnical body.This method can improve the globality of country rock, but is coordinating will to cooperate additive method to use when tunnel structure homogeneous deformation tunnel folder rock is reinforced.The another kind of support pattern that adopts grouted anchor bar can play the double effects of anchor pole and slip casting, and the surrounding rock consolidation effect is better, is integral body but surrounding rock consolidation and malformation can not be melted.General being rigidly connected to drawing anchor pole to adopt owing to it of adopting in little spacing constructing tunnel is in case stress easily takes place and concentrates in structure generation inhomogeneous deformation.This method has only been considered the tunnel structure compatibility of deformation, does not consider the sex change coordination and the stress concentration phenomenon of country rock and structure, needs to cooperate other pre-reinforcement measures.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, propose a kind of with country rock and tunnel support structure connect into whole tension, to drawing the grouted anchor bar device.
The tension that the present invention proposes, to drawing the grouted anchor bar device, comprise anchor pole 2, injected hole 3, steel strand 10, jointing 6, wherein: the shaft of anchor pole 2 is the hollow tubular structure in middle part, the top inner wall of anchor pole 2 is provided with first screw thread 4, the afterbody inwall is provided with second screw thread 1, be evenly distributed with injected hole 3 on the anchor pole 2, be positioned at position, anchor pole 2 termination tapered 5, jointing 6 is a bolt component, its outside is provided with screw thread, jointing 6 is connected with anchor pole 2 two ends by this screw thread, and jointing 6 tops are provided with anchoring handle 7, and anchoring handle 7 is provided with bolt hole 8; Steel strand 10 two are made into " returning shape ", after the tunnel preliminary bracings such as steel strand 10 colligation grids, the anchor hole 8 that is positioned at jointing 6 tops is inserted in " button-type " termination, anchor bolt 9 inserts in the anchor hole 8, jointing 6 is connected anchoring with steel strand 10, thereby formed between the supporting and protection structure, the globality of anchor pole connects, country rock and anchor pole are bited into integral body under the slip casting effect effect.
Among the present invention, for little spacing constructing tunnel, anchor pole is punched tunnel Jia Yan, and anchor pole device two ends are all just propped up structural flexibility with the tunnel and are connected, and promptly steel hinge line 10 colligation tunnels just prop up structure, forms drawing anchor structure; For general tunnel, anchor pole device one end is connected with tunnel support structure, and the other end inserts in the country rock.
The present invention can guarantee safety for tunnel engineering and structural safety when constructing under little spacing tunnel, two holes and general tunnel soft layer unfavorable geological condition.
The object of the invention realizes being finished by following technical scheme:
A kind of to draw, tension grouted anchor bar device, its feature is connected to the grouted anchor bar two ends on by flexible steel strand colligation tunnel preliminary bracing and by bolt arrangement, by bolt grouting tunnel support structure and country rock are connected into integral body.
Described to draw, tension grouted anchor bar anchor pole in little spacing tunnel is linked to be integral body by described steel strand and anchor pole with tunnel support, country rock three after punching tunnel folder rock grouting and reinforcing; In general constructing tunnel, grouted anchor bar one end is connected with tunnel support, and the other end embeds in the country rock, and anchor pole plays slip casting and tension effect.
Described anchor pole is a hollow grouting anchor, and the two ends screw thread is handled and is convenient to and jointing, and the shaft of anchor pole is arranged injected hole, and anchor pole is squeezed into the country rock end and is processed into taper.Anchor pole enters in the tunnel excavation outline line in little spacing constructing tunnel, carries out slip casting at the anchor pole afterbody then, cleaning anchor pole tailing screw flight inwall after slip casting is finished.It is clean with the spiral thread on anchor bolt inner wall cleaning to cut off the anchor pole cone-shaped end behind the opposite side cavern excavation, connects for jointing.
Described jointing is the cylindrical bolt member, is used to connect steel strand and anchor pole, and member one end is connected with the anchor pole inner thread by outside screw, and the other end is connected with flexible steel strand by the bolt on the top lock shape anchoring handle.The tightness that steel strand are connected with anchor pole can be by the threaded adjusting of jointing.
Described steel strand length is according to the preliminary bracing size design, and the steel strand end adopts " back-shaped button " to handle, and after the steel strand colligation tunnel preliminary bracing, connects anchor pole by bolt in the bolt hole on the joint insertion jointing lock shape anchoring handle.
Advantage of the present invention is that inventive principle is simple, working procedure is convenient, cost is not high, can guarantee that little spacing tunnel excavation process folder rock is stable, reduces the influence of bias voltage to tunnel structure, and stablizing tunnel surrounding under the unfavorable geological condition.This device has been realized slip casting, tension simultaneously or to drawing effect, can have been increased the globality of surrounding rock structure and tunnel structure, increased the compatibility of deformation between the little spacing tunnel.
Description of drawings
Fig. 1 is apparatus of the present invention anchor structure schematic diagram.
Fig. 2 is apparatus of the present invention jointing elevation.
Fig. 3 is apparatus of the present invention jointing lateral view.
Fig. 4 is apparatus of the present invention jointing vertical view.
Fig. 5 is apparatus of the present invention steel strand schematic diagrames.
Fig. 6 is apparatus of the present invention connection diagram.
Number in the figure: 1 is second screw thread of anchor pole, 2 is anchor pole, 3 is injected hole, and 4 is first screw thread, and 5 is the anchor pole cone-shaped end, 6 is jointing, 7 are jointing top lock shape anchoring handle, and 8 is bolt hole, and 9 is steel strand joint anchor bolt and nut, 10 is steel strand, and 11 is steel strand " button shape " terminations.
The specific embodiment
Apparatus of the present invention feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Label 1-11 representative is anchor pole 2, injected hole 3, anchor pole top inner wall screw thread 4, anchor pole cone-shaped end 5, threaded jointing 6, joint top lock shape anchoring handle 7, bolt hole 8, steel strand joint anchor bolt and nut 9, the steel strand 10 of anchor pole afterbody inner thread 1, hollow slip casting among the accompanying drawing 1-2, steel strand " button shape " termination 11.
Accompanying drawing 1 is depicted as apparatus of the present invention anchor structure schematic diagram.As seen from Figure 1, this anchor pole is a hollow grouting anchor, and the top of anchor pole 2 and bottom interior wall are provided with second screw thread 1 and first screw thread 4 of certain-length respectively, and shaft distribution injected hole 3, anchor pole 2 terminations are done taper and handled.Carry out slip casting after anchor pole 2 sets, slurries are full of whole anchor pole and enter in the country rock along injected hole 3.In little spacing constructing tunnel, anchor pole 2 length guarantee to set to pass the folder rock, and the top enters in the opposite side tunnel excavation outline line certain limit.The cleaning anchor pole inwall second screw thread inwall used for jointing after slip casting was finished; Cut off termination point of anchor rod behind the opposite side tunnel excavation and will also have thread segment anchor pole inwall second screw thread to clean out, use for jointing.For general constructing tunnel, only need after slip casting, clear up slip casting broken end inwall first screw thread, connect for joint.
Accompanying drawing 2 is depicted as apparatus of the present invention jointing elevation.From Fig. 2 as seen, jointing 6 tops are provided with bolt hole 8 for the anchoring handle 7 of lock shape in the anchoring handle 7.
Accompanying drawing 3-4 is depicted as apparatus of the present invention jointing lateral view and vertical view.From Fig. 3 and Fig. 4 as seen, the connecting elements top is that insert for " button shape " termination 11 of steel strand 10 in the gap between the two mortice lock shape handles, is fixed by bolts to then on the anchoring handle.According to connecting effect between steel strand 10 and the tunnel preliminary bracing, the joint outside screw that is rotatably connected control tightness.
Accompanying drawing 5 is depicted as apparatus of the present invention steel strand schematic diagram.From Fig. 5 as seen, steel strand 10 joints adopt " button shape " to handle, and steel strand 10 are bundled on the tunnel support structure and with assembling reinforcement and reinforce, and steel strand 10 length are 2-4 times that the tunnel just props up the vertical girth of structure.Steel strand 10 bindings are finished, and termination, two ends " button shape " is anchored at anchor hole interior 8 with bolt 9.
Apparatus of the present invention connection diagram as shown in Figure 6.In the present embodiment, use apparatus of the present invention tension, to drawing grouted anchor bar, at first set anchor pole 2, slip casting then, grouted anchor bar inwall injecting paste material is cleaned out installing and connecting apparatus before two linings perform, two ends are connected on the anchor pole 2 with bolt after then steel strand 10 binding tunnels just being propped up structure, connect the jointing screw thread that degree of tightness is regulated linkage according to steel strand 10.For little spacing tunnel, anchor pole is deep into the tunnel excavation outline line, cuts off cone-shaped end behind the tunnel excavation, and cleaning anchor pole inwall is connected tunnel support before tunnel double-lining performs with anchor pole.
The above, it only is the preferred embodiment of apparatus of the present invention, be not that the present invention is done any pro forma restriction, any apparatus of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (2)
1. tension, to drawing the grouted anchor bar device, comprise anchor pole (2), injected hole (3), steel strand (10) and jointing (6), it is characterized in that: anchor pole (2) is the hollow tubular structure of shaft, the top inner wall of anchor pole (2) is provided with first screw thread (4), the afterbody inwall is provided with second screw thread (1), be evenly distributed with injected hole (3) on the anchor pole (2), be positioned at anchor pole (2) position, termination tapered (5), jointing (6) is a bolt component, its outside is provided with screw thread, jointing (6) is connected with anchor pole (2) two ends by this screw thread, and jointing (6) top is provided with lock shape anchoring handle (7), and anchoring handle (7) is provided with bolt hole (8); Steel strand (10) two is made into " button shape ", after the preliminary bracing of steel strand (10) colligation grid, the anchor hole (8) that is positioned at jointing (6) top is inserted in " button shape " termination, and anchor bolt (9) inserts in the anchor hole (8), and jointing (6) is connected anchoring with steel strand (10).
2. a kind of tension according to claim 1, to drawing the grouted anchor bar device, it is characterized in that anchor pole is punched tunnel Jia Yan when little spacing constructing tunnel, anchor pole device two ends are all just propped up the structure employing with the tunnel and are flexibly connected, be that steel hinge line (10) colligation tunnel just props up structure, form drawing anchor structure; For general tunnel, anchor pole device one end is connected with tunnel support structure, and the other end inserts in the country rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100612150A CN102108874B (en) | 2011-03-15 | 2011-03-15 | Tensile cross grouting anchor rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100612150A CN102108874B (en) | 2011-03-15 | 2011-03-15 | Tensile cross grouting anchor rod device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108874A true CN102108874A (en) | 2011-06-29 |
| CN102108874B CN102108874B (en) | 2012-11-07 |
Family
ID=44173145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100612150A Expired - Fee Related CN102108874B (en) | 2011-03-15 | 2011-03-15 | Tensile cross grouting anchor rod device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102108874B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804776A (en) * | 2016-03-15 | 2016-07-27 | 山东科技大学 | Opposite pulling type anchor rods for gob-side entrydriving small coal pillar and support method thereof |
| CN113266371A (en) * | 2021-06-15 | 2021-08-17 | 中交二公局萌兴工程有限公司 | Rock clamping fixing structure in weak surrounding rock small-clear-distance tunnel and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000068544A1 (en) * | 1999-04-21 | 2000-11-16 | Gurlita Maskin Aktiebolag | Device and method in connection with a rock wall |
| US6402433B1 (en) * | 2000-07-25 | 2002-06-11 | H. Doug Gillespie | Tensionable mine roof bolt |
| DE10321175B3 (en) * | 2003-05-12 | 2004-08-26 | Carbotech Fosroc Gmbh | Injection ground anchor, to stabilize walls in mining and tunneling, has an inner channel with at least one chamber to hold the mixed cement to be pressed out into the borehole |
| CN2926509Y (en) * | 2006-05-09 | 2007-07-25 | 中国矿业大学 | Roofbolt support |
| DE102007005540A1 (en) * | 2006-02-24 | 2007-12-27 | Friedr. Ischebeck Gmbh | Anchoring material e.g. plastic material mortar, injection bolt for use as rock bolt, has shaft with internal bore comprising static mixer that is fixed in place by profile providing corrugated or ribbed surface on shaft |
| CN201121522Y (en) * | 2007-11-30 | 2008-09-24 | 中国矿业大学 | Barrel type anchor bar of extrusion-injection anchor |
| CN201180553Y (en) * | 2008-03-18 | 2009-01-14 | 中国矿业大学 | Slip casting anchor bar |
-
2011
- 2011-03-15 CN CN2011100612150A patent/CN102108874B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000068544A1 (en) * | 1999-04-21 | 2000-11-16 | Gurlita Maskin Aktiebolag | Device and method in connection with a rock wall |
| US6402433B1 (en) * | 2000-07-25 | 2002-06-11 | H. Doug Gillespie | Tensionable mine roof bolt |
| DE10321175B3 (en) * | 2003-05-12 | 2004-08-26 | Carbotech Fosroc Gmbh | Injection ground anchor, to stabilize walls in mining and tunneling, has an inner channel with at least one chamber to hold the mixed cement to be pressed out into the borehole |
| DE102007005540A1 (en) * | 2006-02-24 | 2007-12-27 | Friedr. Ischebeck Gmbh | Anchoring material e.g. plastic material mortar, injection bolt for use as rock bolt, has shaft with internal bore comprising static mixer that is fixed in place by profile providing corrugated or ribbed surface on shaft |
| CN2926509Y (en) * | 2006-05-09 | 2007-07-25 | 中国矿业大学 | Roofbolt support |
| CN201121522Y (en) * | 2007-11-30 | 2008-09-24 | 中国矿业大学 | Barrel type anchor bar of extrusion-injection anchor |
| CN201180553Y (en) * | 2008-03-18 | 2009-01-14 | 中国矿业大学 | Slip casting anchor bar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804776A (en) * | 2016-03-15 | 2016-07-27 | 山东科技大学 | Opposite pulling type anchor rods for gob-side entrydriving small coal pillar and support method thereof |
| CN105804776B (en) * | 2016-03-15 | 2017-11-10 | 山东科技大学 | For gob side entry driving fender to pull-type anchor pole and its method for protecting support |
| CN113266371A (en) * | 2021-06-15 | 2021-08-17 | 中交二公局萌兴工程有限公司 | Rock clamping fixing structure in weak surrounding rock small-clear-distance tunnel and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102108874B (en) | 2012-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203475429U (en) | Combined type anchor rod suitable for loess side slope | |
| CN103603675A (en) | Supporting method of permeable soft broken rock stratum roadway | |
| CN203717001U (en) | Flexible prestressed grouting anchor rope | |
| CN108589723A (en) | Band only starches the segmentation hollow grouting anchor of the segmenting slip casting of branch sleeve | |
| CN103422873A (en) | Strong-strength extendable anchor rod | |
| CN106567722A (en) | Novel composite type groutable anchor rod | |
| CN102108874B (en) | Tensile cross grouting anchor rod device | |
| CN102677685B (en) | Surface fracture racheling and reinforcing method of dangerous rock | |
| CN102213628B (en) | Site testing method for anchoring force of glass fiber reinforced plastic anchor rod | |
| CN207314335U (en) | A kind of lithostratigraphy multistage enlarging anchor rod | |
| CN212026279U (en) | Anchor rod supporting structure for foundation pit supporting | |
| CN103993604A (en) | Scattered piled anchor foundation pit supporting structure | |
| CN205089343U (en) | Mining high -pressure slip casting stock | |
| CN203515623U (en) | Reinforcing anchor rod | |
| CN206941582U (en) | A kind of more enlarged footing jet grouting anchor rod rod devices of cloth-bag type | |
| CN109252881A (en) | Steel pipe cement mortar prestress anchorage cable and its method for protecting support | |
| CN205636777U (en) | Basis is consolidated to assembled cement pole protection mound stock | |
| CN204783048U (en) | Concatenation reinforcing apparatus of tunnel steel shotcrete | |
| CN103276733A (en) | Tension and compression dispersing pre-stressed anchor cable | |
| CN208950617U (en) | Steel pipe cement mortar prestress anchorage cable | |
| CN203530972U (en) | Novel compound anchor rod | |
| CN203855971U (en) | Sparse-row pile anchor foundation pit supporting structure | |
| CN203412589U (en) | Supporting structure of extremely fractured soft rock roadway passing through geological anomaly zone | |
| CN202124857U (en) | Splitting pile | |
| CN201377331Y (en) | Full-length pressure grouting anchor rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20200315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |