CN104018864A - Forepoling radial anchor bolt structure and construction method thereof - Google Patents
Forepoling radial anchor bolt structure and construction method thereof Download PDFInfo
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- CN104018864A CN104018864A CN201410292625.XA CN201410292625A CN104018864A CN 104018864 A CN104018864 A CN 104018864A CN 201410292625 A CN201410292625 A CN 201410292625A CN 104018864 A CN104018864 A CN 104018864A
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- bolthole
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Abstract
The invention relates to a forepoling radial anchor bolt structure and a construction method of the forepoling radial anchor bolt structure. The forepoling radial anchor bolt structure is characterized in that advanced construction of a radial anchor bolt is carried out by use of a temporary fundamental plane of an advance working space so that the forepoling function of the radial anchor bolt is realized. A temporary orifice position, an angle of inclination and hole forming depth of an anchor bolt hole are determined according to the relation of the temporary fundamental plane to a permanent excavation fundamental plane; a connecting sleeve is arranged at one side, located in the permanent excavation fundamental plane and close to surrounding rock, of the radial anchor bolt; an anchor bolt body A is connected to the front end of the connecting sleeve; an anchor head sleeves the front end of the anchor bolt body A; a positioning element capable of fixing the radial anchor bolt sleeves the anchor head; an anchor bolt body B is connected to the rear end of the connecting sleeve; an anchor tail A sleeves the rear end of the connecting sleeve; a closed end is arranged at the rear end of the anchor tail A; after the permanent excavation fundamental plane is formed, the closed end is mechanically removed so that an anchor tail B of which the rear end is open is formed; the anchor bolt body B can be mounted from the rear end of the anchor tail B by virtue of the connecting sleeve; a base plate and a nut can be additionally arranged at the rear end of the anchor bolt body B; a grouting pipe, a grout stop plug and an exhaust pipe are arranged at the temporary anchor bolt orifice.
Description
technical field:
The present invention relates to construction of tunnel or geotechnical engineering field, be specifically related to radially anchor structure and construction method thereof of a kind of advance support.
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background technology:
Radially anchor pole can improve the stability of tunnel surrounding, can form certain thickness surrounding rock consolidation circle at tunnel perimeter, is the extremely important supporting measure being also in daily use in construction of tunnel.But, radially anchor pole generally forever excavates after basal plane forms and just comes into effect and bring into play support action in tunnel, tunnel is forever excavated to basal plane formation surrouding rock deformation before and be difficult to form support action, obviously, existing radially anchor pole technology does not possess the function of advance support, and its support capacity is not fully used in engineering.In Practical Project, often adopt pre-reinforcement or pre-supporting measure, to the surrouding rock deformation before tunnel excavation is controlled, then carry out in hole excavation and the radially construction of the supporting measure such as anchor pole, because having increased pre-reinforcement or pre-supporting measure, its construction investment is larger, and the duration is also longer.How realizing anchor pole radially forever excavates the surrouding rock deformation of basal plane before forming to tunnel to form support action is the technical issues that need to address of the present invention.
summary of the invention:
The invention provides radially anchor structure and construction method thereof of a kind of advance support, this advance support radially anchor structure and construction method thereof is conducive to realize and tunnel is forever excavated to the surrouding rock deformation of basal plane before forming forms pre-support action.
The technical solution used in the present invention is:
Radially anchor structure of advance support of the present invention, it is characterized in that, comprise following structure: the rear end of described radially anchor pole is provided with splicing sleeve, described splicing sleeve front end connects anchor bar body A, described anchor bar body A front end outer race is provided with anchor head, described anchor head outer race is provided with keeper, described splicing sleeve rear end connects anchor bar body B, described splicing sleeve rear perpheral is arranged with anchor tail A, the rear end of described anchor tail A is provided with blind end, described blind end can adopt mechanical means to remove, to form the anchor tail B of open rearward end, can pass through described splicing sleeve skyhook body B from the rear end of described anchor tail B, described anchor bar body B rear end can add backing plate and nut, described anchor head outer wall is provided with positive stop key A and positive stop key B, described anchor head rear end is provided with annular catching groove, described keeper comprises spiral reinforcement and spring leaf, described spring leaf has four limbs and is circularly and evenly distributed along described spiral reinforcement, described spring leaf and described spiral reinforcement are welded into entirety, and described spring leaf rear end is provided with button hook.
Further, above-mentioned keeper can adopt precession method to be enclosed between the positive stop key A and positive stop key B of described anchor head outward by described spiral reinforcement, described keeper can the scope between described positive stop key A and positive stop key B in before and after be free to slide, but can not skid off this scope, its sliding distance must meet the button hook of described spring leaf and the annular catching groove of described anchor head can be thrown off interlocking or mutually the requirement separating.
Further, when above-mentioned button hook and annular catching groove are interlocking, the radially insertion of anchor pole in bolthole operation in place described in can facilitating, after described radially anchor pole is in place in bolthole, can be by push rod to anchor bar body A applied thrust, make the front end of keeper spring leaf push against country rock at the bottom of bolthole hole, and anchor head is slided at the bottom of bolthole hole, throw off and separate mutually with annular catching groove to force described button hook, now, the rear end of described spring leaf can outwards be opened and be supported on bolthole hole wall under self elastic force effect, thereby, described radially anchor pole is fixed on to the desired location in bolthole, to prevent that radially anchor pole skids off from bolthole.
Further, in above-mentioned bolthole, be laid with stack, described stack interval is fixed on described anchor bar body A, described stack front end extends to described anchor head, rear end extends to beyond the bolthole aperture that is positioned at interim basal plane, and described bolthole aperture place is provided with Grouting Pipe, stack and stop grouting plug.
Further, above-mentioned splicing sleeve respectively with described anchor bar body A, anchor bar body B and anchor tail A between connected mode and the connected mode between described anchor bar body A and anchor head all adopt and be threaded.
The present invention adopts anchor structure radially to carry out the construction method of advance support, it is characterized in that, before permanent excavation basal plane excavation construction, carries out boring and the radially anchor pole of construction and installation of bolthole in the working space at interim basal plane place.
Further, its concrete construction sequence is as follows:
(1) according to the relativeness of interim basal plane and permanent excavation basal plane, carry out the radially general arrangement design of anchor pole, radially anchor pole is vertical or quadrature arrangement with permanent excavation basal plane as far as possible, in the time of operation limited space, adopts the wide-angle arrangement form of near orthogonal;
(2), according to the radially general arrangement of anchor pole, determine the radially locus, angle of inclination and the depth of pore forming of bolthole in the interim aperture that is positioned at interim basal plane place of anchor pole of each root;
(3) by radially anchor head, keeper, anchor bar body A, splicing sleeve and the anchor tail A of anchor pole are assembled into entirety, by interlocking the annular catching groove of the button hook of described keeper rear end and described anchor head rear end, and stack interval is fixed on anchor bar body A;
(4) after carrying out the boring of bolthole and hole operation completes clearly in the working space at interim basal plane place, the radially anchor pole assembling is inserted in bolthole, and utilize push rod will be radially anchor pole head into precalculated position, make the radially splicing sleeve of anchor pole be positioned at permanent excavation basal plane by near country rock one side, the blind end of anchor tail A rear end is positioned in excavation scope, near anchor head is positioned at the bottom of bolthole hole, by push rod to anchor bar body A applied thrust, make the front end of keeper push against country rock at the bottom of bolthole hole, and anchor head is slided at the bottom of bolthole hole, throw off and separate mutually with annular catching groove to force described button hook, now, the spring leaf rear end of keeper can outwards be opened and be supported on bolthole hole wall under self elastic force effect, thereby radially anchor pole is fixed in bolthole, afterwards, from bolthole, extract again push rod out,
(5) at the interim aperture of bolthole place, Grouting Pipe, stack and stop grouting plug are installed, and by Grouting Pipe to pressure injection cement mortar in bolthole, when the stack mouth of pipe occurs, after overfall, stopping slip casting; Full to a high position gradually from low level in order to ensure slurries in bolthole, in the time that anchor head is positioned at the low level of anchor tail A, should utilize stack to slip casting in bolthole, utilize Grouting Pipe exhaust outside bolthole simultaneously;
(6) carry out the radially installation of anchor pole of next root, until all radially anchor bolt construction is complete and form after support action, forever excavate the excavation construction of basal plane, after permanent excavation basal plane forms, remove the blind end of anchor tail A rear end, skyhook body B again, at bolthole aperture seat slurry, installation backing plate fastening nut.
Further, above-mentioned interim basal plane is the interior profile basal plane of existing tunnel structure, or the interior profile basal plane of advance heading.
Compared with prior art, the present invention improves existing anchor structure, is provided with anchor tail and keeper, so that anchor bar body is placed in the middle in bolthole, location is fixing and later stage spreading; It utilizes leading temporary working space, before permanent excavation basal plane excavation construction, and the radially anchor pole of constructing in advance, so that at the peripheral surrounding rock consolidation circle that forms of permanent excavation basal plane, realize the radially advance support function of anchor pole, can save pre-supporting measure and construction investment, the reduction of erection time.
brief description of the drawings:
Fig. 1 is anchor pole advance support rough package drawing radially in the embodiment of the present invention
Fig. 2 is anchor bolt construction state generalized section radially in the embodiment of the present invention
Fig. 3 be in the embodiment of the present invention radially anchor pole use state generalized section
Fig. 4 is anchor pole anchor head schematic diagram radially in the embodiment of the present invention
Fig. 5 is the A-A sectional drawing in anchor pole anchor head schematic diagram radially in the embodiment of the present invention
Fig. 6 is anchor pole keeper schematic diagram radially in the embodiment of the present invention
Fig. 7 is the B view in anchor pole keeper schematic diagram radially in the embodiment of the present invention
Fig. 8 is anchor pole anchor head and keeper assembling generalized section radially in the embodiment of the present invention
Fig. 9 is anchor pole anchor tail A schematic diagram radially in the embodiment of the present invention
Figure 10 is anchor pole anchor tail B schematic diagram radially in the embodiment of the present invention
Number in the figure explanation: 1-is anchor pole radially, and 2-forever excavates basal plane, 3-existing tunnel structure, the newly-built tunnel structure of 4-, the interim basal plane of 5-, 6-bolthole, 7-stack, 8-Grouting Pipe, 9-stop grouting plug, axis, 10-tunnel, 101-anchor head, 102-keeper, 103-anchor bar body A, 104-splicing sleeve, 105-anchor tail A, 106-anchor bar body B, 107-backing plate, 108-nut, 109-anchor tail B, 1011-positive stop key A, 1012-positive stop key B, 1013-annular catching groove, 1021-spiral reinforcement, 1022-spring leaf, 1023-button hook.
detailed description of the invention:
Using existing tunnel original position widening project as specific embodiment and relevant drawings, the present invention is described in further detail below.
Radially anchor structure of advance support of the present invention, described radially anchor pole 1 one end at the bottom of bolthole 6 holes is front end, be rear end towards bolthole 6 one end, aperture, be positioned at permanent excavation basal plane 2 at anchor pole 1 radially and be provided with splicing sleeve 104 by near country rock one side, described splicing sleeve 104 front ends connect anchor bar body A(103), described anchor bar body A(103) front end outer race is provided with anchor head 101, described anchor head 101 outer race are provided with keeper 102, described splicing sleeve 104 rear ends connect anchor bar body B(106), described splicing sleeve 104 rear perpherals are arranged with anchor tail A(105), described anchor tail A(105) rear end be provided with blind end, the effect of described blind end is to prevent that cement mortar from entering splicing sleeve 104 inside, described blind end can adopt mechanical means to remove, to form the anchor tail B(109 of open rearward end), from described anchor tail B(109) rear end can pass through described splicing sleeve 104 skyhook body B(106), described anchor bar body B(106) rear end can add backing plate 107 and nut 108,
(1) anchor head 101 outer walls are provided with positive stop key A(1011) and positive stop key B(1012), described anchor head 101 rear ends are provided with annular catching groove 1013, described keeper 102 comprises spiral reinforcement 1021 and spring leaf 1022, described spring leaf 1022 has four limbs and is circularly and evenly distributed along described spiral reinforcement 1021, described spring leaf 1022 is welded into entirety with described spiral reinforcement 1021, and described spring leaf 1022 rear ends are provided with button hook 1023;
(2) described keeper 102 can adopt precession method to be enclosed within the positive stop key A(1011 of described anchor head 101 outward by described spiral reinforcement 1021) and positive stop key B(1012) between, described keeper 102 can be at described positive stop key A(1011) and positive stop key B(1012) between scope in before and after be free to slide, but can not skid off this scope, its sliding distance must meet the button hook 1023 of described spring leaf 1022 rear ends and the annular catching groove 1013 of described anchor head 101 rear ends can be interlocking or throw off the requirement separating;
(3) when described button hook 1023 is interlocking with annular catching groove 1013, the radially insertion of anchor pole 1 in bolthole 6 operation in place described in can facilitating, after described radially anchor pole 1 is in place in bolthole 6, can be by push rod to anchor bar body A(103) applied thrust, make the front end of keeper 102 spring leafs 1022 push against country rock at the bottom of bolthole 6 holes, and anchor head 101 is slided at the bottom of bolthole 6 holes, throw off and separate mutually with annular catching groove 1013 to force described button hook 1023, now, the rear end of described spring leaf 1022 can outwards be opened and be supported on bolthole 6 hole walls under self elastic force effect, thereby, described radially anchor pole 1 is fixed on to the desired location in bolthole 6, to prevent that radially anchor pole 1 skids off from bolthole 6,
(4) in described bolthole 6, be laid with stack 7, described stack 7 intervals are fixed on described anchor bar body A(103) on, described stack 7 front ends extend to described anchor head 101, rear end extends to beyond bolthole 6 apertures that are positioned at interim basal plane 5, and described bolthole 6 aperture places are provided with stack 7, Grouting Pipe 8 and stop grouting plug 9.
(5) described splicing sleeve 104 respectively and described anchor bar body A(103), anchor bar body B(106) and anchor tail A(105) between connected mode, and described anchor bar body A(103) and anchor head 101 between connected mode, all adopt be threaded;
(6) described interim basal plane 5 can be the interior profile basal plane of existing tunnel structure 3, can be also the interior profile basal plane of advance heading, and is not limited only to described interior profile basal plane.
The present invention adopts anchor structure radially to carry out the construction method of advance support, comprises following construction sequence:
(1) according to the relativeness of interim basal plane 5 and permanent excavation basal plane 2, carry out the radially general arrangement design of anchor pole 1, radially anchor pole 1 is vertical or quadrature arrangement with permanent excavation basal plane 2 as far as possible, in the time of operation limited space, adopts the wide-angle arrangement form of near orthogonal;
(2), according to the radially general arrangement of anchor pole 1, determine the radially locus, angle of inclination and the depth of pore forming of bolthole 6 in the interim aperture that is positioned at interim basal plane 5 places of anchor pole 1 of each root, and carrying out the setting-out of position, aperture on interim basal plane 5;
(3) by radially anchor head 101, keeper 102, the anchor bar body A(103 of anchor pole 1), splicing sleeve 104 and anchor tail A(105) be assembled into entirety, the button hook of described keeper 102 rear ends 1023 is interlocking with the annular catching groove 1013 of described anchor head 101 rear ends, and stack 7 intervals are fixed on to anchor bar body A(103) on;
(4) after carrying out the boring of bolthole 6 and hole operation completes clearly in the working space at interim basal plane 5 places, the radially anchor pole 1 assembling is inserted in bolthole 6, and utilize push rod will be radially anchor pole 1 head into precalculated position, make the radially splicing sleeve 104 of anchor pole 1 be positioned at permanent excavation basal plane 2 by near country rock one side, anchor tail A(105) blind end of rear end is positioned in excavation scope, near anchor head 101 is positioned at the bottom of bolthole 6 holes, by push rod to anchor bar body A(103) applied thrust, make the front end of keeper 102 push against country rock at the bottom of bolthole 6 holes, and anchor head 101 is slided at the bottom of bolthole 6 holes, throw off and separate mutually to force the button hook 1023 of keeper 102 spring leaf 1022 rear ends and the annular catching groove of anchor head 101 rear ends 1013, now, spring leaf 1022 rear ends of keeper 102 can outwards be opened and be supported on bolthole 6 hole walls under self elastic force effect, thereby radially anchor pole 1 is fixed in bolthole 6, afterwards, from bolthole 6, extract push rod out again,
(5), at bolthole 6 interim aperture places, stack 7, Grouting Pipe 8 and stop grouting plug 9 are installed, and are passed through Grouting Pipe 8 to the interior pressure injection cement mortar of bolthole 6, when stack 7 mouths of pipe occur, after overfall, stopping slip casting; Full to a high position gradually from low level in order to ensure slurries in bolthole 6, when anchor head 101 is positioned at anchor tail A(105) low level time, should utilize stack 7 to the interior slip casting of bolthole 6, utilize Grouting Pipe 8 to the outer exhaust of bolthole 6 simultaneously;
(6) carry out the radially installation of anchor pole 1 of next root, until all radially anchor pole 1 construct complete and form after support action, forever excavate the excavation construction of basal plane 2, after permanent excavation basal plane 2 forms, remove anchor tail A(105) blind end of rear end, to form the anchor tail B(109 of open rearward end), then from anchor tail B(109) rear end by described splicing sleeve 104 skyhook body B(106), at bolthole 6 aperture seats slurries, backing plate 107 fastening nut 108 are installed.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; institute is understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. radially anchor structure of an advance support, it is characterized in that, comprise following structure: the rear end of described radially anchor pole is provided with splicing sleeve, described splicing sleeve front end connects anchor bar body A, described anchor bar body A front end outer race is provided with anchor head, described anchor head outer race is provided with keeper, described splicing sleeve rear end connects anchor bar body B, described splicing sleeve rear perpheral is arranged with anchor tail A, the rear end of described anchor tail A is provided with blind end, described blind end can adopt mechanical means to remove, to form the anchor tail B of open rearward end, can pass through described splicing sleeve skyhook body B from the rear end of described anchor tail B, described anchor bar body B rear end can add backing plate and nut, described anchor head outer wall is provided with positive stop key A and positive stop key B, described anchor head rear end is provided with annular catching groove, described keeper comprises spiral reinforcement and spring leaf, described spring leaf has four limbs and is circularly and evenly distributed along described spiral reinforcement, described spring leaf and described spiral reinforcement are welded into entirety, and described spring leaf rear end is provided with button hook.
2. radially anchor structure of advance support according to claim 1, it is characterized in that: described keeper can adopt precession method to be enclosed between the positive stop key A and positive stop key B of described anchor head outward by described spiral reinforcement, described keeper can the scope between described positive stop key A and positive stop key B in before and after be free to slide, but can not skid off this scope, its sliding distance must meet the button hook of described spring leaf and the annular catching groove of described anchor head can be thrown off interlocking or mutually the requirement separating.
3. radially anchor structure of advance support according to claim 1, it is characterized in that: when described button hook and annular catching groove are interlocking, the radially insertion of anchor pole in bolthole operation in place described in can facilitating, after described radially anchor pole is in place in bolthole, can be by push rod to anchor bar body A applied thrust, make the front end of keeper spring leaf push against country rock at the bottom of bolthole hole, and anchor head is slided at the bottom of bolthole hole, throw off and separate mutually with annular catching groove to force described button hook, now, the rear end of described spring leaf can outwards be opened and be supported on bolthole hole wall under self elastic force effect, thereby, described radially anchor pole is fixed on to the desired location in bolthole, to prevent that radially anchor pole skids off from bolthole.
4. radially anchor structure of advance support according to claim 1, it is characterized in that: in described bolthole, be laid with stack, described stack interval is fixed on described anchor bar body A, described stack front end extends to described anchor head, rear end extends to beyond the bolthole aperture that is positioned at interim basal plane, and described bolthole aperture place is provided with Grouting Pipe, stack and stop grouting plug.
5. radially anchor structure of advance support according to claim 1, is characterized in that: described splicing sleeve respectively with described anchor bar body A, anchor bar body B and anchor tail A between connected mode and the connected mode between described anchor bar body A and anchor head all adopt and be threaded.
6. right to use requires described in 1 anchor structure radially to carry out a construction method for advance support, it is characterized in that, before permanent excavation basal plane excavation construction, carries out boring and the radially anchor pole of construction and installation of bolthole in the working space at interim basal plane place.
7. construction method according to claim 6, is characterized in that:
(1) according to the relativeness of interim basal plane and permanent excavation basal plane, carry out the radially general arrangement design of anchor pole, radially anchor pole is vertical or quadrature arrangement with permanent excavation basal plane as far as possible, in the time of operation limited space, adopts the wide-angle arrangement form of near orthogonal;
(2), according to the radially general arrangement of anchor pole, determine the radially locus, angle of inclination and the depth of pore forming of bolthole in the interim aperture that is positioned at interim basal plane place of anchor pole of each root;
(3) by radially anchor head, keeper, anchor bar body A, splicing sleeve and the anchor tail A of anchor pole are assembled into entirety, by interlocking the annular catching groove of the button hook of described keeper rear end and described anchor head rear end, and stack interval is fixed on anchor bar body A;
(4) after carrying out the boring of bolthole and hole operation completes clearly in the working space at interim basal plane place, the radially anchor pole assembling is inserted in bolthole, and utilize push rod will be radially anchor pole head into precalculated position, make the radially splicing sleeve of anchor pole be positioned at permanent excavation basal plane by near country rock one side, the blind end of anchor tail A rear end is positioned in excavation scope, near anchor head is positioned at the bottom of bolthole hole, by push rod to anchor bar body A applied thrust, make the front end of keeper push against country rock at the bottom of bolthole hole, and anchor head is slided at the bottom of bolthole hole, throw off and separate mutually with annular catching groove to force described button hook, now, the spring leaf rear end of keeper can outwards be opened and be supported on bolthole hole wall under self elastic force effect, thereby radially anchor pole is fixed in bolthole, afterwards, from bolthole, extract again push rod out,
(5) at the interim aperture of bolthole place, Grouting Pipe, stack and stop grouting plug are installed, and by Grouting Pipe to pressure injection cement mortar in bolthole, when the stack mouth of pipe occurs, after overfall, stopping slip casting; Full to a high position gradually from low level in order to ensure slurries in bolthole, in the time that anchor head is positioned at the low level of anchor tail A, should utilize stack to slip casting in bolthole, utilize Grouting Pipe exhaust outside bolthole simultaneously;
(6) carry out the radially installation of anchor pole of next root, until all radially anchor bolt construction is complete and form after support action, forever excavate the excavation construction of basal plane, after permanent excavation basal plane forms, remove the blind end of anchor tail A rear end, skyhook body B again, at bolthole aperture seat slurry, installation backing plate fastening nut.
8. construction method according to claim 6, is characterized in that: described interim basal plane is the interior profile basal plane of existing tunnel structure, or the interior profile basal plane of advance heading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410292625.XA CN104018864B (en) | 2014-06-27 | 2014-06-27 | The radial anchor structure of advance support and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410292625.XA CN104018864B (en) | 2014-06-27 | 2014-06-27 | The radial anchor structure of advance support and construction method thereof |
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| Publication Number | Publication Date |
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| CN104018864A true CN104018864A (en) | 2014-09-03 |
| CN104018864B CN104018864B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218071A (en) * | 2017-07-31 | 2017-09-29 | 中铁十七局集团第工程有限公司 | The quick grouting device of hollow bolt in the range of applicable 360 ° |
| CN107762518A (en) * | 2016-08-18 | 2018-03-06 | 中交第三公路工程局有限公司 | Tunnel cantilevered advance anchor bolt drivage method |
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| CA1039986A (en) * | 1976-06-21 | 1978-10-10 | Donald B. Haslam | Rock bolt assembly |
| DE3707036A1 (en) * | 1987-03-05 | 1988-09-15 | Hausherr & Soehne Rudolf | Fastening system consisting of a drillhole and of a rock tie fastenable in this |
| CN1415805A (en) * | 2002-12-12 | 2003-05-07 | 上海交通大学 | Ship anchor type anchor head of ground anchor in grouting stretch model |
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| CN201158820Y (en) * | 2008-02-18 | 2008-12-03 | 成都现代万通锚固技术有限公司 | Full threaded mortar anchor bar |
| CN101768966A (en) * | 2010-01-26 | 2010-07-07 | 成都现代万通锚固技术有限公司 | Pressure grouting device for overall length spiral anchor rod and construction process |
| EP2423432A2 (en) * | 2010-08-25 | 2012-02-29 | Amir Peled | Anchoring apparatus and method of use |
| CN204002881U (en) * | 2014-06-27 | 2014-12-10 | 福州市规划设计研究院 | Advance support is anchor structure radially |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1039986A (en) * | 1976-06-21 | 1978-10-10 | Donald B. Haslam | Rock bolt assembly |
| DE3707036A1 (en) * | 1987-03-05 | 1988-09-15 | Hausherr & Soehne Rudolf | Fastening system consisting of a drillhole and of a rock tie fastenable in this |
| CN1415805A (en) * | 2002-12-12 | 2003-05-07 | 上海交通大学 | Ship anchor type anchor head of ground anchor in grouting stretch model |
| CN2804390Y (en) * | 2005-04-13 | 2006-08-09 | 李晓峰 | Harm gas preventing hollowed injecting paste anchor rod |
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| CN101768966A (en) * | 2010-01-26 | 2010-07-07 | 成都现代万通锚固技术有限公司 | Pressure grouting device for overall length spiral anchor rod and construction process |
| EP2423432A2 (en) * | 2010-08-25 | 2012-02-29 | Amir Peled | Anchoring apparatus and method of use |
| CN204002881U (en) * | 2014-06-27 | 2014-12-10 | 福州市规划设计研究院 | Advance support is anchor structure radially |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762518A (en) * | 2016-08-18 | 2018-03-06 | 中交第三公路工程局有限公司 | Tunnel cantilevered advance anchor bolt drivage method |
| CN107762518B (en) * | 2016-08-18 | 2019-05-31 | 中交第三公路工程局有限公司 | Tunnel cantilevered advance anchor bolt drivage method |
| CN107218071A (en) * | 2017-07-31 | 2017-09-29 | 中铁十七局集团第工程有限公司 | The quick grouting device of hollow bolt in the range of applicable 360 ° |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104018864B (en) | 2016-03-23 |
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