CN202937284U - Shattered medium downward casing pipe pore-forming and bolt-grouting substep reinforcing device - Google Patents
Shattered medium downward casing pipe pore-forming and bolt-grouting substep reinforcing device Download PDFInfo
- Publication number
- CN202937284U CN202937284U CN 201220541836 CN201220541836U CN202937284U CN 202937284 U CN202937284 U CN 202937284U CN 201220541836 CN201220541836 CN 201220541836 CN 201220541836 U CN201220541836 U CN 201220541836U CN 202937284 U CN202937284 U CN 202937284U
- Authority
- CN
- China
- Prior art keywords
- section
- lockset
- anchor
- slip casting
- hole
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a shattered medium downward casing pipe pore-forming and bolt-grouting stepwise reinforcing device, wherein a fastening section A comprises an outer anchoring section lockset, a gasket, a pallet and a hole packer, the outer anchoring section lockset is sleeved on a rope body, a gasket, a disco- pallet arching upward from the middle, and an inverted vertebral body shaped hole packer are fixedly arranged at the lower part, and the hole packer firmly presses the orifice of an anchoring borehole; a grouting section B comprises a rope body and a birdcage type grouting section; an anchoring section C comprises an inverted gun barbed nail, a stop block, a pin, an inner anchoring section lockset and a clip, and the tubular inner anchoring section lockset is sleeved on the rope body. The device is easy to construct, simple and convenient to operate, has an obvious effect, is safe and reliable, and is wide in practicability.
Description
Technical field
the utility model relates to fast pore-creating and the bracing means in a kind of mine laneway base plate Loosened rock, and the downward casing pipe hole forming of especially a kind of Loosened rock and anchor are annotated the substep bracing means.
Background technology
as everyone knows, the pressure soft rock supporting of deep-well highland is the great technical barrier during the underground construction such as coal mining is safeguarded always, is also the direction of domestic and international underground mining field primary study recent decades.Wherein the pucking problem of soft-rock tunnel, be a key technology difficult problem that affects high ground stress soft rock stress roadway support success or failure.Tunnel is the passage of Safety of Coal Mine Production, is called " throat " of mine, and the importance that base plate is administered is self-evident especially.At present, the technique device of control Floor Heave in Roadway mainly comprises that release improves the floor rocks stress state and reinforces raising floor rocks intensity, specifically has both at home and abroad: the vertical grooving control of base plate pucking method, base plate both sides are dug the unloading blast method, base plate tunnel two base angles are carried out the loosening blasting method, with the full section method of support such as U-shaped steel collapsible timbering method of support, concrete arch and arc plate of end arch, construct base plate anchor pole method, floor grouting method and Strengthening Roof, controlled Floor Heave in Roadway method etc.
bolt-grouting support is the effective way that soft and broken surrounding rocks is reinforced, and adopts grouted anchor bar (rope) reinforce adjoining rock, and anchoring is combined with grouting and reinforcing, utilizes grouting and reinforcing to realize the country rock modification, and the effect of anchoring is brought into play.Yet anchor pouring reinforcement fail to control preferably the pucking large deformation in the roadway floor governance process, mainly there is the problem of following several respects: 1) after small-bore drill bit (diameter of phi<42mm) drilling and forming hole, due to the hole wall unstable failure, cause Completion of Drilling Hole of poor quality, after drilling rod exits, boring is prone to the collapse hole phenomenon, affect the installation of follow-up Grouting Pipe and anchor pole (rope), while is less with the Grouting Pipe diameter that small-bore is holed supporting, the slurries range of scatter is limited and grouting with plunger is consuming time longer, and slip casting effect is not obvious.2) in the base plate bolt-grouting support, anchor cable is adopted the mode of first slip casting post tensioning, can't in the anchor cable length range, apply prestressing force, the anchored force in anchor cable deep just produces after the rock deformation of corresponding deep, deflection is larger, anchor cable is stressed larger, but the generation of anchorage cable anchoring power is to be based upon to take on the basis that rock deformation is cost, does not belong to active support, thereby affects the consolidation effect of bolt-grouting support.
The utility model content
in order to overcome fast pore-creating in existing mine laneway base plate Loosened rock and the deficiency on reinforcing technique, the utility model provides the downward casing pipe hole forming of a kind of Loosened rock and anchor to annotate the substep bracing means, this bracing means adopts the protection casing slip casting of superficial part large aperture, solved hole wall collapse hole problem, and realized big-flow high-pressure slip casting, save the slip casting time and increase the slurries range of scatter, utilize grouting cable anchor and girder steel to form the integer support structure, realize anchor cable full length fastening and common carrying in the time of the grouting reinforcement fragmented rock body, effectively solve the base plate large deformation problem, in addition, the easily construction of this device, simple to operation, and effect is remarkable, safe and reliable, there is practicality widely.
the utility model solves the technical scheme that its technical problem adopts: described fastening section A comprises outer anchor section lockset, packing ring, pallet and hole packer, described outer anchor section lockset is sleeved on cable body, bottom is fixed with packing ring, the middle plate-like pallet upwards arched upward and the hole packer of vertebral body shape, hole packer firmly is pressed in the aperture of anchoring boring, realizes the full anchor in whole drilling depth and the sealing of grouting cable anchor, described slip casting section B comprises cable body and birdcage slip casting section, birdcage slip casting section is to be combined by multiply steel strand and the slip casting core pipe comprised in steel strand, be drilled with slurry outlet every 100mm in slip casting core pipe, each hole is crossed as 60 degree, be convenient to the rock mass that slurries can inject body of rod surrounding, the diameter of birdcage slip casting section is greater than the diameter of cable body and is less than the internal diameter of boring, and this structure is beneficial to slip casting core pipe reverse pulp smoothly, increase the frictional force between cable body and hole wall, increase anchored force, described anchoring section C comprises inverted-gun barbed nail, limited block, pin, interior anchor section lockset and intermediate plate, the interior anchor section lockset that described anchoring section C is provided with one section tubulose is sleeved on cable body, interior anchor section lockset upper end has the inverted-gun barbed nail groove, in groove, by pin and inverted-gun barbed nail, be hinged, the outside weldings limited location piece of inverted-gun barbed nail groove, the angle that the restriction inverted-gun barbed nail finally opens is 60 degree, the bottom of interior anchor section lockset is provided with internal taper hole, coincide and be equiped with three conical intermediate plates between taper hole and cable body, clamp cable body in intermediate plate, intermediate plate is adjacent to the internal taper hole face of interior anchor section lockset outward, cable body and interior anchor section lockset are firmly linked together.The specific embodiment of this bracing means is:
(1) at the construct concrete floor of 0.1 m～0.2 m thickness of roadway floor, for roadway floor provides the grouting layer;
(2) terrace fixed after, the major diameter superficial part injected hole that is 2.5 m～3.0 m at the roadway floor construction depth, between hole, array pitch is 1.5 m～3.0 m, aperture 100 mm～150 mm;
(3) after the superficial part injected hole has been constructed, put into retaining wall slip casting sleeve pipe in hole, the slip casting casing diameter is less than superficial part injected hole 25 mm～30mm, and length is 1.5 m～2.0m, and the space between water mudding plug-hole mouth and slip casting sleeve pipe is so that fixed sleeving;
(4) after aperture cement is fixed, inject cement grout in the slip casting sleeve pipe, stop slip casting after filling with;
(5) after the cement paste injected until shallow bore hole is fixed, the deep anchor cable hole of construction dark 6.0 m～7.0 m in the former retaining wall slip casting of roadway floor sleeve pipe, aperture 75 mm～80 mm;
(6) utilize water pump tap internal water accumulation after pore-forming, reduce ponding in the hole adverse effect to slip casting effect;
(7) 5.5 m～long large aperture pre-stretch-draw base plate hollow grouting cable anchor of 6.5 m is installed in hole, by the bottom of above carrying grouting cable anchor and making inverted-gun barbed nail in the grouting cable anchor anchoring section firmly be anchored at hole, is formed and effectively take root a little;
(8) by same row, adjacent grouting cable anchor adopts steel channel beam to be combined into one, and supporting pallet and lockset are installed, and then utilizes the stretch-draw instrument to carry out first stretch-draw to grouting cable anchor, stops stretch-draw after reaching the design stretching force;
(9) carry out deep hole grouting by grouting cable anchor, after filling with, stop slip casting, carry out two times tensioning after the slurries initial set.
the beneficial effects of the utility model are, the downward casing pipe hole forming of this Loosened rock and anchor are annotated the substep bracing means and are adopted the protection casing slip casting of superficial part large aperture, solved hole wall collapse hole problem, and realized big-flow high-pressure slip casting, save the slip casting time and increase the slurries range of scatter, utilize grouting cable anchor and girder steel to form the integer support structure, realize anchor cable full length fastening and common carrying in the time of the grouting reinforcement fragmented rock body, effectively solve the base plate large deformation problem, in addition, the easily construction of this device, simple to operation, and effect is remarkable, safe and reliable, there is practicality widely.
The accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is described in further detail.
fig. 1 is structural principle schematic diagram of the present utility model.
fig. 2 is the large aperture pre-stretch-draw base plate hollow grouting cable anchor structural principle schematic diagram that the utility model is used.
in figure, 1. tunnel, 2. terrace, 3. superficial part injected hole, 4. slip casting sleeve pipe, 5. grouting cable anchor, 6. deep injected hole, 7. outer anchor section lockset, 8. packing ring, 9. pallet, 10. hole packer, 11. cable bodies, 12. birdcage slip casting sections, 13. inverted-gun barbed nail, 14. limited blocks, 15. pins, 16. interior anchor section lockset, 17. intermediate plates, 18. hole walls.
The specific embodiment
in the drawings, the downward casing pipe hole forming of this Loosened rock and anchor are annotated the large aperture pre-stretch-draw base plate hollow grouting cable anchor related in the substep bracing means and are comprised fastening section A, slip casting section B and anchoring section C, described fastening section A comprises outer anchor section lockset 7, packing ring 8, pallet 9 and hole packer 10, described outer anchor section lockset 7 is sleeved on cable body 11, cable body 11 bottoms are fixed with packing ring 8, the middle plate-like pallet 9 upwards arched upward and the hole packer 10 of vertebral body shape, hole packer 10 firmly is pressed in the aperture of anchoring boring, the sealing of realization to the full anchor in whole drilling depth and grouting cable anchor 5, described slip casting section B comprises cable body 11 and birdcage slip casting section 12, birdcage slip casting section 12 is to be combined by multiply steel strand and the slip casting core pipe comprised in steel strand, be drilled with slurry outlet every 100mm in slip casting core pipe, each hole is crossed as 60 degree, be convenient to the rock mass that slurries can inject body of rod surrounding, the diameter of birdcage slip casting section 12 is greater than the diameter of cable body 11 and is less than the internal diameter of boring, this structure is beneficial to slip casting core pipe reverse pulp smoothly, increase the frictional force between cable body 11 and hole wall, increase anchored force, described anchoring section C comprises inverted-gun barbed nail 13, limited block 14, pin 15, interior anchor section lockset 16 and intermediate plate 17, the interior anchor section lockset 16 that described anchoring section C is provided with one section tubulose is sleeved on cable body 11, interior anchor section lockset 16 upper ends have the inverted-gun barbed nail groove, in groove, by pin 15 and inverted-gun barbed nail 13, be hinged, the outside weldings limited location piece of inverted-gun barbed nail groove, the angle that restriction inverted-gun barbed nail 13 finally opens is 60 degree, the bottom of interior anchor section lockset 16 is provided with internal taper hole, coincide and be equiped with three conical intermediate plates 17 between taper hole and cable body 11, the interior clamping cable body 11 of intermediate plate 17, the outer internal taper hole face that is adjacent to interior anchor section lockset 16 of intermediate plate 17, cable body 11 and interior anchor section lockset 16 are firmly linked together.The specific embodiment of this bracing means is:
Claims (3)
1. the downward casing pipe hole forming of Loosened rock and anchor are annotated the device that substep is reinforced, large aperture pre-stretch-draw base plate hollow grouting cable anchor comprises fastening section A, slip casting section B and anchoring section C, it is characterized in that, described fastening section A comprises outer anchor section lockset (7), packing ring (8), pallet (9) and hole packer (10), outer anchor section lockset (7) is sleeved on cable body (11), bottom is fixed with packing ring (8), the middle plate-like pallet (9) upwards arched upward and the hole packer (10) of vertebral body shape, and hole packer (10) firmly is pressed in the aperture of anchoring boring; Described slip casting section B comprises cable body (11) and birdcage slip casting section (12); Described anchoring section C comprises inverted-gun barbed nail (13), limited block (14), pin (15), interior anchor section lockset (16) and intermediate plate (17), and the interior anchor section lockset (16) of tubulose is sleeved on cable body (11).
2. the downward casing pipe hole forming of a kind of Loosened rock according to claim 1 and anchor are annotated the device that substep is reinforced, it is characterized in that, birdcage slip casting section (12) is to be combined by multiply steel strand and the slip casting core pipe comprised in steel strand, be drilled with slurry outlet every 100mm in slip casting core pipe, each hole is crossed as 60 degree, and the diameter of birdcage slip casting section (12) is greater than the diameter of cable body (11) and is less than the internal diameter of boring.
3. the downward casing pipe hole forming of a kind of Loosened rock according to claim 1 and anchor are annotated the device that substep is reinforced, it is characterized in that, interior anchor section lockset (16) upper end has the inverted-gun barbed nail groove, in groove, by pin (15) and inverted-gun barbed nail (13), be hinged, the outside weldings limited location piece of inverted-gun barbed nail groove, the angle that restriction inverted-gun barbed nail (13) finally opens is 60 degree, the bottom of interior anchor section lockset (16) is provided with internal taper hole, coincide and be equiped with three conical intermediate plates (17) between taper hole and cable body (11), clamp cable body (11) in intermediate plate (17), the outer internal taper hole face that is adjacent to interior anchor section lockset (16) of intermediate plate (17), cable body (11) and interior anchor section lockset (16) are firmly linked together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541836 CN202937284U (en) | 2012-10-23 | 2012-10-23 | Shattered medium downward casing pipe pore-forming and bolt-grouting substep reinforcing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541836 CN202937284U (en) | 2012-10-23 | 2012-10-23 | Shattered medium downward casing pipe pore-forming and bolt-grouting substep reinforcing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937284U true CN202937284U (en) | 2013-05-15 |
Family
ID=48321528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541836 Expired - Fee Related CN202937284U (en) | 2012-10-23 | 2012-10-23 | Shattered medium downward casing pipe pore-forming and bolt-grouting substep reinforcing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937284U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900446A (en) * | 2012-10-23 | 2013-01-30 | 中国矿业大学 | Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium |
| CN108104854A (en) * | 2018-01-05 | 2018-06-01 | 中铁五局集团第四工程有限责任公司 | A kind of grouting construction method of quick setting and high strength quick tensioning anchor cable |
-
2012
- 2012-10-23 CN CN 201220541836 patent/CN202937284U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900446A (en) * | 2012-10-23 | 2013-01-30 | 中国矿业大学 | Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium |
| CN102900446B (en) * | 2012-10-23 | 2014-12-24 | 中国矿业大学 | Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium |
| CN108104854A (en) * | 2018-01-05 | 2018-06-01 | 中铁五局集团第四工程有限责任公司 | A kind of grouting construction method of quick setting and high strength quick tensioning anchor cable |
| CN108104854B (en) * | 2018-01-05 | 2019-06-28 | 中铁五局集团第四工程有限责任公司 | A kind of grouting construction method of quick tensioning anchor cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102900446B (en) | Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium | |
| CN110939456B (en) | High-stress roadway combined ring body beam supporting structure and construction method thereof | |
| CN105840207B (en) | Construction method for comprehensive tunnel entering structure of large-span tunnel penetrating shallow-buried bias-pressure loose accumulation body | |
| CN102322273A (en) | A kind of roadway floor anchor is annotated integrated reinforcement means | |
| CN111119935B (en) | Multi-layer grouting reinforcement method for surrounding rock of soft and broken roadway structure | |
| CN104389628B (en) | Landslide location tunnel reinforcement device and reinforced construction method | |
| CN102418536A (en) | Large-aperture pretension base plate hollow grouting device | |
| CN106884655B (en) | A kind of two-way reinforcement means of gob side entry driving coal column | |
| CN103485808B (en) | Electro-osmosis home position modified roadway anchoring method of underground swelling soft rock | |
| CN104481560A (en) | Roadway roof aquifer treatment method | |
| CN106321119A (en) | Double-layer anchor net cable supporting structure for controlling mining roadway surrounding rock deformation and method thereof | |
| CN101915108A (en) | Method for controlling floor heave of dynamic pressure tunnel | |
| CN102230382A (en) | Progressive shielding booster-type grouting and reinforcing technology for baseboard | |
| CN109098714A (en) | A kind of soft extremely irregularcoal seam fully mechanized coal face gob-side entry retaining method of high methane three | |
| CN108930543A (en) | A kind of big cross section gob side entry driving coupling supporting structure and construction method | |
| CN108087008A (en) | A kind of three-soft seam gob side entry method for protecting support | |
| CN101509383A (en) | Tunnel footing anchor pouring reinforcement anti bottom expanding method and construction technique | |
| CN110486068B (en) | Tunnel advanced support type foot locking anchor rod structure and construction method thereof | |
| CN104141305A (en) | Multi-layer spiral blade self-drilling-type soil anchor rod and constructing method thereof | |
| CN111535817A (en) | Working face double-lane tunneling small coal pillar reinforcement construction method | |
| CN103711507A (en) | Method for controlling deformation of large broken rock zone roadway by using multi-steel stranded wire combined supporting device | |
| CN113107489A (en) | High-ground-pressure three-soft coal seam along-empty crossheading advanced grouting reinforcement method | |
| CN101082281A (en) | Method for controlling deformation of surrounding rocks of gallery influenced by overhead mining | |
| CN202937284U (en) | Shattered medium downward casing pipe pore-forming and bolt-grouting substep reinforcing device | |
| CN102155248B (en) | Method for supporting laneway below coal pillar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130515 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |