CN103774661A - Inverted bolt tubular anchor rod - Google Patents
Inverted bolt tubular anchor rod Download PDFInfo
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- CN103774661A CN103774661A CN201210412811.3A CN201210412811A CN103774661A CN 103774661 A CN103774661 A CN 103774661A CN 201210412811 A CN201210412811 A CN 201210412811A CN 103774661 A CN103774661 A CN 103774661A
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- tube wall
- rod
- bolt
- rock
- tubular type
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Abstract
The invention relates to an inverted bolt tubular anchor rod which comprises a hollow tubular rod body, a baffle ring and an inserted plate, wherein the two ends of the tubular rod body are provided with openings, sealed inverted bolts are distributed on the tube wall of the tubular rod body, and the top of the tubular rod body is filled with stemming and provided with the baffle ring with the inserted plate; detonation cartridge bags with detonators are arranged in the tube wall at the bottom of the tubular rod body, and cylindrical explosives are disposed in the tube wall where the sealed inverted bolts are arranged. The inverted bolt tubular anchor rod is simple in structure, convenient to construct and low in cost, can immediately provide anchoring force to control deformation of rock and earth mass, and meanwhile, improves a load transmission mechanism of rock and soil anchoring to improve the anchoring force, and accordingly stability of the rock and earth mass is remarkably improved, and safety of anchoring engineering is greatly enhanced.
Description
Technical field
The present invention relates to Anchorage Technology, relate in particular to anti-bolt pipe anchor rod.
Background technology
Ground anchorage is by being embedded in the anchor pole in stratum, stratum is locked together tightly, rely on the interaction of anchor pole-injecting cement paste-hole wall ground muscle power, transfer and improve self intensity and self-stable ability of Rock And Soil, improve by the stress state of anchoring Rock And Soil to make it stable, thereby guarantee the technology of engineering safety.The engineering application of Anchorage Technology came from for 19 end of the centurys, along with the development of its theoretical research and technology, in mine, the field such as water conservancy, water power, highway, railway, municipal administration, urban construction, geology, military project obtains extensive use, as a kind of comparatively desirable support form, in underground construction, slope project, deep-foundation pit engineering etc. stable, play a significant role.
Ground anchorage is not only subject to the impact of formation lithology, Rock-soil Mass Structure, geological structure, hydrogeology etc., also may be subject to the effect of violent earthquake, and they all constitute a threat to the safety of ground anchorage.
During the construction and operation of ground anchorage, anchor pole is extracted from injecting cement paste, anchor pole is extracted from anchor hole together with injecting cement paste is two kinds of ground anchorage mode of failure the most basic, and they all can cause ground anchorage to lose efficacy, and bring hidden danger to engineering safety.In order to ensure engineering safety, must limit the anchored force of anchor pole.When the anchored force that provides when needs is larger, common bolt anchoring can not meet the needs of engineering, this restricts the application and development of Anchorage Technology undoubtedly, how to improve the load pass through mechanism of ground anchorage, overcome the drawback of common friction-type anchoring, become raising anchor-holding force of anchor bolt, promote the fundamental way of Anchorage Technology development.
In addition, before injecting cement paste in ground anchorage is fixed, almost can not provide anchored force, provide immediately the requirement of anchored force therefore can not adapt to requirement after weak rocks soil body excavation.Although existing pipe-seam type anchor rod overcomes to some extent to above-mentioned shortcoming, after rockbolt installation, can provide immediately anchored force, be conducive to control in time the distortion of Rock And Soil, the anchored force that can provide is little; Meanwhile, because soft rock-soil cognition is clamp-oned tube chamber from the pipe seam of pipe-seam type anchor rod, also the further decline of anchored force will be caused.
Summary of the invention
Technical problem to be solved by this invention is to provide one can provide anchored force to control Rock And Soil distortion immediately, improves the load pass through mechanism of ground anchorage to improve the anti-bolt pipe anchor rod of anchor-holding force of anchor bolt simultaneously.
For addressing the above problem, anti-bolt pipe anchor rod of the present invention, is characterized in that: it comprises the tubular type body of rod and baffle ring and the backing plate of both ends open, hollow; On the tube wall of the described tubular type body of rod, be distributed with the anti-bolt of sealing, its top is filled stemming and is provided with the described baffle ring with described backing plate; In the tube wall of described tubular type body of rod bottom, be provided with the igniting primer that detonator is housed; Be provided with in the described tube wall of the anti-bolt of described sealing and be provided with column charge.
Described detonator is connected with detonator payment to a porter.
Axial groove and described tube wall that the anti-bolt of described sealing is provided with by described tube wall were upwards separated in week, tube wall in the circumferential slot being simultaneously provided with by described tube wall and described tubular type body of rod bottom direction is separated, and only in the top orientation of the described tubular type body of rod, is connected with described tube wall.
The present invention compared with prior art has the following advantages:
1, igniting primer and the column charge of in-built detonator are housed in the tube wall due to the tubular type body of rod in the present invention.On the one hand, the blast of igniting primer and column charge in anchor rod body, produces strong effect to tube wall, make tubular type body of rod generation plastic strain, cause tube wall radial dilatation extruding Rock And Soil, anchored force can be provided immediately, stop the relative sliding of Rock And Soil and anchor pole, reach the effect of anchoring at once; On the other hand, the detonation of column charge is pushed the anti-bolt of closure open, and anti-bolt is pressed in Rock And Soil, and anchored force also can be provided immediately, produces anchoring effect.Simultaneously, at tubular type body of rod tube chamber and the filled slurry around and in Rock And Soil crack that opens anti-bolt, the tubular type body of rod and injecting cement paste are combined closely, especially open anti-bolt dearly embolism among hole wall Rock And Soil and injecting cement paste, fundamentally change anchoring load pass through mechanism, build the anchoring of friction-embolism NEW TYPE OF COMPOSITE, improve significantly ground anchorage effect, transfer better the self-stable ability of Rock And Soil, effectively prevent anchor rod anchored inefficacy, thereby improve the stability of Rock And Soil, the safety of anchoring engineering is greatly enhanced.
2, the present invention simple in structure, be convenient to processing, easy construction, with low cost, can speed up the work significantly, improve ground anchorage effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is powder charge shaft section figure schematic diagram before explosion of the present invention.
Fig. 3 is the tubular type body of rod and closed anti-bolt schematic diagram before explosion of the present invention.
In figure: 1-Rock And Soil, 2-injecting cement paste 3-boring, the 4-tubular type body of rod 5-tubular type body of rod bottom 6-open anti-bolt 7-baffle ring 8-backing plate 9-igniting primer 10-detonator 11-detonator payment to a porter 12-column charge 13-stemming 14-tube wall 15-axial groove 16-circumferential slot 17-seal anti-bolt 18-anti-bolt opening.
The specific embodiment
As shown in Fig. 1 ~ 3, anti-bolt pipe anchor rod, it comprises the tubular type body of rod 4 and baffle ring 7 and the backing plate 8 of both ends open, hollow.On the tube wall 14 of the tubular type body of rod 4, be distributed with the anti-bolt 17 of sealing, its top is filled stemming 13 and is provided with the baffle ring 7 with backing plate 8; In the tube wall 14 of tubular type body of rod bottom 5, be provided with the igniting primer 9 that detonator 10 is housed; Be provided with in the tube wall 14 that seals anti-bolt 17 and be provided with column charge 12.
Wherein: detonator 10 is connected with detonator payment to a porter 11.
Sealing the axial groove 15 that anti-bolt 17 is provided with by tube wall 14 upwards separates in week with tube wall 14, the circumferential slot 16 being simultaneously provided with by tube wall 14 is separated with the tube wall 14 in the tubular type body of rod 4 bottom directions, only in the top orientation of the tubular type body of rod 4, is connected with tube wall 14.
When use, (1) by designing requirement, the weak rocks soil body 1 is arranged to boring 3; (2) external diameter is headed in boring 3 than the tubular type body of rod 4 of the boring 3 little 1 ~ 2mm in aperture, fill stemming 13 on the tubular type body of rod 4 tops; (3) utilize interval between column charge 12 powder sticks to be less than gap distance, by the induced detonation all column charges 12 of explosion that at once detonate; (4) detonation orders about tube wall 14 radial dilatation extruding Rock And Soils 1, and anchored force is provided immediately, controls the distortion of Rock And Soil 1; The anti-bolt 17 of sealing distributing on the tube wall 14 of the tubular type body of rod 4 deflection under detonation drives, is pressed into Rock And Soil 1 and forms embolism open anti-bolt 6 in Rock And Soil 1, and anchored force also can be provided immediately; Meanwhile, on tube wall 14, form anti-bolt opening 18; (5) the tubular type body of rod 4 filling and injecting slurry bodies 2 are carried out to anchoring, make injecting cement paste 2 not only be full of the tube chamber of the tubular type body of rod 4, and be full of and open anti-bolt 6 around by the anti-bolt opening 18 forming on tube wall 14, and have part injecting cement paste 2 to be filled among the crack of Rock And Soil 1, build up the anchoring of friction-embolism NEW TYPE OF COMPOSITE.
Claims (3)
1. anti-bolt pipe anchor rod, is characterized in that: it comprises the tubular type body of rod (4) and baffle ring (7) and the backing plate (8) of both ends open, hollow; On the tube wall (14) of the described tubular type body of rod (4), be distributed with the anti-bolt of sealing (17), its top is filled stemming (13) and is provided with the described baffle ring (7) with described backing plate (8); In the tube wall (14) of described tubular type body of rod bottom (5), be provided with the igniting primer (9) that detonator (10) are housed; Be provided with in the described tube wall (14) of the anti-bolt of described sealing (17) and be provided with column charge (12).
2. anti-bolt pipe anchor rod as claimed in claim 1, is characterized in that: described detonator (10) is connected with detonator payment to a porter (11).
3. anti-bolt pipe anchor rod as claimed in claim 1, it is characterized in that: the axial groove (15) that the anti-bolt of described sealing (17) is provided with by described tube wall (14) is upwards separated in week with described tube wall (14), the circumferential slot (16) being simultaneously provided with by described tube wall (14) is separated with the tube wall (14) in the direction of the described tubular type body of rod (4) bottom, only in the top orientation of the described tubular type body of rod (4), is connected with described tube wall (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210412811.3A CN103774661B (en) | 2012-10-26 | 2012-10-26 | Anti-bolt pipe anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210412811.3A CN103774661B (en) | 2012-10-26 | 2012-10-26 | Anti-bolt pipe anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103774661A true CN103774661A (en) | 2014-05-07 |
| CN103774661B CN103774661B (en) | 2015-12-16 |
Family
ID=50567372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210412811.3A Expired - Fee Related CN103774661B (en) | 2012-10-26 | 2012-10-26 | Anti-bolt pipe anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103774661B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19518472C1 (en) * | 1995-05-19 | 1996-08-14 | Bauer Spezialtiefbau | Method for removal of steel tractive components of press anchor |
| CN2423318Y (en) * | 2000-06-01 | 2001-03-14 | 东北大学 | Explosion expanded rockbolt |
| CN202359557U (en) * | 2011-11-30 | 2012-08-01 | 兰州大学 | Pawl type anchor rod |
| CN202359559U (en) * | 2011-11-30 | 2012-08-01 | 兰州大学 | Bead-like tubular anchor rod |
| CN202359560U (en) * | 2011-11-30 | 2012-08-01 | 兰州大学 | Tubular anchor rod with trumpet-shaped bottom end |
| CN202936779U (en) * | 2012-10-26 | 2013-05-15 | 兰州大学 | Tubular anchor rod provided with reverse bolts |
-
2012
- 2012-10-26 CN CN201210412811.3A patent/CN103774661B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19518472C1 (en) * | 1995-05-19 | 1996-08-14 | Bauer Spezialtiefbau | Method for removal of steel tractive components of press anchor |
| CN2423318Y (en) * | 2000-06-01 | 2001-03-14 | 东北大学 | Explosion expanded rockbolt |
| CN202359557U (en) * | 2011-11-30 | 2012-08-01 | 兰州大学 | Pawl type anchor rod |
| CN202359559U (en) * | 2011-11-30 | 2012-08-01 | 兰州大学 | Bead-like tubular anchor rod |
| CN202359560U (en) * | 2011-11-30 | 2012-08-01 | 兰州大学 | Tubular anchor rod with trumpet-shaped bottom end |
| CN202936779U (en) * | 2012-10-26 | 2013-05-15 | 兰州大学 | Tubular anchor rod provided with reverse bolts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103774661B (en) | 2015-12-16 |
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| 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 | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20201026 |