CN109252881A - Steel pipe cement mortar prestress anchorage cable and its method for protecting support - Google Patents
Steel pipe cement mortar prestress anchorage cable and its method for protecting support Download PDFInfo
- Publication number
- CN109252881A CN109252881A CN201811306148.2A CN201811306148A CN109252881A CN 109252881 A CN109252881 A CN 109252881A CN 201811306148 A CN201811306148 A CN 201811306148A CN 109252881 A CN109252881 A CN 109252881A
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- Prior art keywords
- steel pipe
- cement mortar
- cable
- section
- anchor
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 105
- 239000010959 steel Substances 0.000 title claims abstract description 105
- 239000011083 cement mortar Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007569 slipcasting Methods 0.000 claims abstract description 42
- 238000004873 anchoring Methods 0.000 claims abstract description 25
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 230000036316 preload Effects 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses steel pipe cement mortar prestress anchorage cables, including anchoring section, the first free segment, steel pipe cement mortar section, the second free segment, anchor cable attachment and slip casting coupling head.Steel pipe cement mortar section is made of hollow steel pipe, the cable body across hollow steel pipe and the bond cement mortar that is filled in steel pipe；The tile type lockset of the hollow steel pipe both ends setting can lock the cable body at hollow steel pipe both ends, form closed cement mortar slip casting space；The rear end of hollow steel pipe is provided with gas vent；The cable body centre of the anchor cable is provided with Grouting Pipe, and Grouting Pipe extends in cement mortar slip casting space；The construction procedure of the anchor cable is that first pre- next injection cement mortar slurries form steel pipe cement mortar section.The tensile strength and shearing strength in cable body stress collection middle section can be improved by increasing steel pipe cement mortar structure among anchor cable, effectively solve the technical problem of " cable body stress raisers, steel strand wires are defeated in detail and are broken " in cable bolting.
Description
Technical field
The invention belongs to mine support engineering cable bolting technical fields, and in particular to steel pipe cement mortar prestress anchorage cable
And its method for protecting support.
Background technique
In colliery tunnel support engineering, cable bolting is the common type of roof timbering.The common anchor cable of coal mine is 7 strands
Or 19 strands of strand structure, common anchor cable diameter are 15.2mm, 17.8mm, 20mm, 22mm.Compared with suspension roof support, anchor
Rigging has the advantages that intensity is big, length is big, and anchor cable can anchor to top plate deep and stablize in rock stratum, therefore cable bolting is to top plate
Stability control has remarkable effect.But with the gradually exploitation of coal resources, roadway surrounding rock ambient stress runs down,
In roadway with large deformation, weak surrounding rock tunnel and high stress workings subject to dy namic pressure, anchor cable fracture problem is increasingly prominent.Some complicated tired
Under the conditions of difficulty, even also there is fracture in the high-strength anchor cable of some diameter 22mm.Field observation shows that the position of anchor cable fracture is equal
Occur close to first 1/3 section of aperture, or the shearing changing of the relative positions rock stratum bed plane at；From the point of view of fracture morphology, anchor cable is " to cut
Destroy and pull open bad " fracture under collective effect.To find out its cause, current cable bolting is primarily present, " stress raisers, steel are twisted
Line is defeated in detail under the drawing effect of cutting and is broken by root (stock) " technical problem, how to improve the anti-of anchor cable stress collection middle section
The globality of tensile strength, shearing strength and steel strand wires becomes the critical issue for solving anchor cable fracture.
Summary of the invention
The present invention provides steel pipe cement mortar prestress anchorage cable and its method for protecting support, it is intended to by among the cable body of anchor cable
Increase steel pipe cement mortar structure so as to improve the tensile strength and shearing strength of this section of cable body, to effectively solve cable bolting
Present in " cable body stress raisers, steel strand wires defeated in detail and by root (stock) be broken " technical problem.Meanwhile it is described
Anchor cable can apply more high-prestressed and realize the active support to rock stratum, and can prevent high stress by cement mortar package
The corrosion of cable body is broken.
To achieve the above object, the invention adopts the following technical scheme:
Steel pipe cement mortar prestress anchorage cable, including passing sequentially through anchoring section, the steel pipe cement that cable body is together in series from the front to the back
Mortar section and anchor cable attachment；Cable body part between anchoring section and steel pipe cement mortar section is the first free segment, steel pipe cement bonded sand
The cable body part starched between section and anchor cable attachment is the second free segment, and cable body front end is provided with slip casting coupling head；Anchor cable attachment packet
Include pallet and anchor tail lockset；
The steel pipe cement mortar section includes hollow steel pipe, and cable body passes through hollow steel pipe and is coaxially set with hollow steel pipe, empty
Heart steel pipe rear and front end, which is provided with, locks the tile type lockset being integrated for hollow steel pipe and cable body, and hollow steel pipe rear lateral portion opens up
There is gas vent, forms closed cement mortar slip casting space, the center of cable body between hollow steel pipe, tile type lockset and cable body
Position is provided with Grouting Pipe, and Grouting Pipe rear end extends in cement mortar slip casting space, and Grouting Pipe front end is connect with slip casting coupling head；
Cement mortar is filled in cement mortar slip casting space.
The steel pipe cement mortar section is located at first 1/3 section of anchor cable or is prone to the cable body section of shearing fracture；It is described
Anchoring section is anchored using resin anchoring agent.
The number of segment of the steel pipe cement mortar section and position draw the number of segment for breaking disconnected cable body and position to determine by being prone to
It is fixed.
The method for protecting support of steel pipe cement mortar prestress anchorage cable, including following construction procedure:
(1) according to it is required reinforce rock stratum geomechanical condition, determine steel pipe cement mortar prestress anchorage cable intensity and size,
The position of steel pipe cement mortar section, pretightning force, anchorage length, array pitch supporting parameter；
(2) anchor cable hole is set in required reinforcing rock stratum according to determining supporting parameter, anchor cable bore dia is greater than cable body diameter 10
~16mm, anchor cable bore dia and be greater than 4~8mm of hollow steel pipe outer diameter；Anchor cable bore dia and hollow steel pipe outer diameter are according to reality
Working condition appropriate adjustment；
(3) cable body is passed through into hollow steel pipe, tile type lockset and assembles to form closed cement mortar at design position
Slip casting space, and resin anchoring agent is sent into anchor cable hole bottom with cable body front end, and drive cable body rotation sufficiently to stir using drilling machine
Resin anchoring agent is mixed, forms anchoring section after Anchor Agent solidification；
(4) after resin anchoring agent solidification, pallet and anchor tail lockset are installed, and tensioning preload is carried out to anchor cable using tensioner,
Cable body after locking anchor tail lockset in the first free segment, the second free segment and steel pipe cement mortar section forms prestressing force, to reinforcing
Rock stratum carries out active support；
(5) after applying pretightning force to anchor cable, using slip casting equipment and pipeline by slip casting coupling head to the note in cable body centre
It starches pipe and carries out slip casting, injecting paste material is high-strength cement mortar, and the cement mortar slip casting space in hollow steel pipe is filled high-strength water
Cement mortar slurries, during slip casting, the gas of cement mortar slip casting space interior is discharged by gas vent, until cement mortar
It is completely filled with cement mortar slip casting space, cement mortar forms steel pipe cement mortar section after consolidating in hollow steel pipe；
(6) after the steel pipe cement mortar prestress anchorage cable is installed, in time to surface displacement, the internal modification for reinforcing rock stratum
And absciss layer and anchorage cable stress state carry out real-time dynamic monitoring, and evaluate the reliability of the stability and anchor cable of reinforcing rock stratum,
The supporting parameter of anchor cable is adjusted according to evaluation result dynamic.
By adopting the above technical scheme, the invention has the following advantages:
First, this section of cable body can be improved by increasing steel pipe cement mortar section (structure) among the cable body of anchor cable in the present invention
Tensile strength and shearing strength, thus effectively solve cable bolting present in " cable body stress raisers, steel strand wires are each
A break up and by root (stock) be broken " technical problem；
Second, the anchor cable can apply more high-prestressed, realize to the active support of rock stratum, can control the morning of rock stratum in time
Phase deformation and failure；
Third, in the steel pipe cement mortar section of cable body, can be wrapped up by cement mortar prevents the corrosion of high stress cable body to be broken；
4th, it is provided with multiple free segments in cable body, takes full advantage of the elongation percentage of free segment, can adapt to the big change of country rock
Shape improves the reliability of cable bolting.
Detailed description of the invention
Fig. 1 is the overall structure figure of steel pipe cement mortar prestress anchorage cable of the present invention；
Fig. 2 is the structure chart of steel pipe cement mortar section of the present invention；
Fig. 3 is steel pipe cement mortar prestressing anchor support layout drawing of the present invention；
In Fig. 1-3: 1 is anchoring section, and 2 be the first free segment, and 3 be steel pipe cement mortar section, and 4 be the second free segment, and 5 be pallet, 6
It is slip casting coupling head for anchor tail lockset, 7,8 be hollow steel pipe, and 9 be cable body, and 10 be high-strength cement mortar, and 11 be tile type lockset,
12 be gas vent, and 13 be Grouting Pipe, and 14 be resin anchoring agent, and 15 is reinforce rock stratum, and 16 be anchor cable hole.
Specific embodiment
As shown in Figure 1-Figure 3, the specific embodiment of the invention is as follows:
Steel pipe cement mortar prestress anchorage cable of the invention, the anchoring section being together in series including passing sequentially through cable body 9 from the front to the back
1, steel pipe cement mortar section 3 and anchor cable attachment；9 part of cable body between anchoring section 1 and steel pipe cement mortar section 3 is first free
Section 2,9 part of cable body between steel pipe cement mortar section 3 and anchor cable attachment is the second free segment 4, and 9 front end of cable body is provided with slip casting
Coupling head 7；Anchor cable attachment includes pallet 5 and anchor tail lockset 6.
Steel pipe cement mortar section 3 includes hollow steel pipe 8, and cable body 9 passes through hollow steel pipe 8 and sets with 8 coaxial line of hollow steel pipe
It sets, 8 rear and front end of hollow steel pipe, which is provided with, locks the tile type lockset 11 being integrated, hollow steel pipe for hollow steel pipe 8 and cable body 9
8 rear lateral portions offer gas vent 2, and closed cement mortar note is formed between hollow steel pipe 8, tile type lockset 11 and cable body 9
Space is starched, the centre of cable body 9 is provided with Grouting Pipe 13, and 13 rear end of Grouting Pipe extends in cement mortar slip casting space, slip casting
13 front end of pipe is connect with slip casting coupling head 7；Cement mortar 10 is filled in cement mortar slip casting space.
Steel pipe cement mortar section 3 is located at first 1/3 section of anchor cable or is prone to 9 sections of cable body of shearing fracture；The anchor
Gu section 1 is anchored using resin anchoring agent.
The number of segment of steel pipe cement mortar section 3 and position draw the number of segment for breaking disconnected cable body 9 and position to determine by being prone to.
The method for protecting support of steel pipe cement mortar prestress anchorage cable, including following construction procedure:
(1) according to the geomechanical condition for reinforcing rock stratum 15, the intensity and size, steel of steel pipe cement mortar prestress anchorage cable are determined
The position of pipe cement mortar section 3, pretightning force, anchorage length, array pitch supporting parameter；
(2) anchor cable hole 16 is set in required reinforcing rock stratum 15 according to determining supporting parameter, 16 diameter of anchor cable hole is greater than cable body 9
10~16mm of diameter, 16 diameter of anchor cable hole and be greater than 8 4~8mm of outer diameter of hollow steel pipe；Anchor cable bore dia and hollow steel pipe outer diameter
It can be with appropriate adjustment according to actual production conditions；
(3) cable body 9 is passed through into hollow steel pipe 8, tile type lockset 11 and assembles to form closed cement at design position
Mortar grouting space, and resin anchoring agent 14 is sent into 16 bottom of anchor cable hole with 9 front end of cable body, and cable body 9 is driven using drilling machine
Resin anchoring agent 14 is sufficiently stirred in rotation, forms anchoring section 1 after Anchor Agent solidification；
(4) after resin anchoring agent 14 solidifies, pallet 5 and anchor tail lockset 6 are installed, and pre- to anchor cable progress tensioning using tensioner
Tightly, the cable body 9 after locking anchor tail lockset 6 in the first free segment 2, the second free segment 4 and steel pipe cement mortar section 3 forms pre- answer
Power carries out active support to rock stratum 15 is reinforced；
(5) after applying pretightning force to anchor cable, using slip casting equipment and pipeline by slip casting coupling head 7 to 9 centre of cable body
Grouting Pipe 13 carries out slip casting, and injecting paste material is high-strength cement mortar 10, and the cement mortar slip casting space in hollow steel pipe 8 is filled
10 slurries of high-strength cement mortar, during slip casting, the gas of cement mortar slip casting space interior is discharged by gas vent 2, directly
It is completely filled with cement mortar slip casting space to cement mortar 10, cement mortar 10 forms steel pipe water after consolidating in hollow steel pipe 8
Cement mortar section 3；
(6) after the steel pipe cement mortar prestress anchorage cable is installed, in time to the surface displacement for reinforcing rock stratum 15, internal change
Shape and absciss layer and anchorage cable stress state carry out real-time dynamic monitoring, and evaluate the reliable of the stability and anchor cable for reinforcing rock stratum 15
Property, the supporting parameter of anchor cable is adjusted according to evaluation result dynamic.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (4)
1. steel pipe cement mortar prestress anchorage cable, it is characterised in that: the anchor being together in series including passing sequentially through cable body from the front to the back
Gu section, steel pipe cement mortar section and anchor cable attachment；Cable body part between anchoring section and steel pipe cement mortar section is first free
Section, the cable body part between steel pipe cement mortar section and anchor cable attachment are the second free segment, and cable body front end is provided with slip casting connection
Head；Anchor cable attachment includes pallet and anchor tail lockset；
The steel pipe cement mortar section includes hollow steel pipe, and cable body passes through hollow steel pipe and is coaxially set with hollow steel pipe, empty
Heart steel pipe rear and front end, which is provided with, locks the tile type lockset being integrated for hollow steel pipe and cable body, and hollow steel pipe rear lateral portion opens up
There is gas vent, forms closed cement mortar slip casting space, the center of cable body between hollow steel pipe, tile type lockset and cable body
Position is provided with Grouting Pipe, and Grouting Pipe rear end extends in cement mortar slip casting space, and Grouting Pipe front end is connect with slip casting coupling head；
Cement mortar is filled in cement mortar slip casting space.
2. steel pipe cement mortar prestress anchorage cable as described in claim 1, it is characterised in that: the steel pipe cement mortar section
In first 1/3 section of anchor cable or it is prone to the cable body section of shearing fracture；The anchoring section is anchored using resin anchoring agent.
3. steel pipe cement mortar prestress anchorage cable as claimed in claim 2, it is characterised in that: the steel pipe cement mortar section
Number of segment and position draw the number of segment for breaking disconnected cable body and position to determine by being prone to.
4. the method for protecting support of steel pipe cement mortar prestress anchorage cable as claimed in claim 3, it is characterised in that: applied including following
Work step is rapid:
(1) according to it is required reinforce rock stratum geomechanical condition, determine steel pipe cement mortar prestress anchorage cable intensity and size,
The position of steel pipe cement mortar section, pretightning force, anchorage length, array pitch supporting parameter；
(2) anchor cable hole is set in required reinforcing rock stratum according to determining supporting parameter, anchor cable bore dia is greater than cable body diameter 10
~16mm, anchor cable bore dia and be greater than 4~8mm of hollow steel pipe outer diameter；Anchor cable bore dia and hollow steel pipe outer diameter are according to reality
Working condition appropriate adjustment；
(3) cable body is passed through into hollow steel pipe, tile type lockset and assembles to form closed cement mortar at design position
Slip casting space, and resin anchoring agent is sent into anchor cable hole bottom with cable body front end, and drive cable body rotation sufficiently to stir using drilling machine
Resin anchoring agent is mixed, forms anchoring section after Anchor Agent solidification；
(4) after resin anchoring agent solidification, pallet and anchor tail lockset are installed, and tensioning preload is carried out to anchor cable using tensioner,
Cable body after locking anchor tail lockset in the first free segment, the second free segment and steel pipe cement mortar section forms prestressing force, to reinforcing
Rock stratum carries out active support；
(5) after applying pretightning force to anchor cable, using slip casting equipment and pipeline by slip casting coupling head to the note in cable body centre
It starches pipe and carries out slip casting, injecting paste material is high-strength cement mortar, and the cement mortar slip casting space in hollow steel pipe is filled high-strength water
Cement mortar slurries, during slip casting, the gas of cement mortar slip casting space interior is discharged by gas vent, until cement mortar
It is completely filled with cement mortar slip casting space, cement mortar forms steel pipe cement mortar section after consolidating in hollow steel pipe；
(6) after the steel pipe cement mortar prestress anchorage cable is installed, in time to surface displacement, the internal modification for reinforcing rock stratum
And absciss layer and anchorage cable stress state carry out real-time dynamic monitoring, and evaluate the reliability of the stability and anchor cable of reinforcing rock stratum,
The supporting parameter of anchor cable is adjusted according to evaluation result dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811306148.2A CN109252881B (en) | 2018-11-05 | 2018-11-05 | Steel pipe cement mortar prestressed anchor cable and supporting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811306148.2A CN109252881B (en) | 2018-11-05 | 2018-11-05 | Steel pipe cement mortar prestressed anchor cable and supporting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109252881A true CN109252881A (en) | 2019-01-22 |
| CN109252881B CN109252881B (en) | 2023-08-29 |
Family
ID=65043026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811306148.2A Active CN109252881B (en) | 2018-11-05 | 2018-11-05 | Steel pipe cement mortar prestressed anchor cable and supporting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109252881B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295936A (en) * | 2019-06-18 | 2019-10-01 | 山东科技大学 | A kind of shaftless screw chip suppression tube expansion and its application method |
| CN110617080A (en) * | 2019-09-10 | 2019-12-27 | 太原理工大学 | Narrow coal pillar anchor cable wall type reinforcing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0996198A (en) * | 1995-09-29 | 1997-04-08 | Shimizu Corp | Ps anchor fixing method and anchor fixing member used in the method |
| US5689923A (en) * | 1995-04-11 | 1997-11-25 | Hilti Aktiengeschaft | Device for securing steel reinforcing or prestressing members in an anchorage |
| KR20090013528A (en) * | 2007-08-02 | 2009-02-05 | 주식회사 스마텍엔지니어링 | The prestressed tunnel support structure |
| CN102392443A (en) * | 2011-10-19 | 2012-03-28 | 山东科技大学 | Construction technique for high-slope pressure-dispersed pre-stressed anchor cable |
| CN103321663A (en) * | 2013-02-28 | 2013-09-25 | 新汶矿业集团有限责任公司 | Roadway baseboard anchoring and top pouring type pre-stressed anchor cable strengthening device and construction method |
| CN107905260A (en) * | 2017-12-01 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | A kind of prestressed anchor Cable Structure suitable for crane beam on rock wall for underground power house position |
-
2018
- 2018-11-05 CN CN201811306148.2A patent/CN109252881B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5689923A (en) * | 1995-04-11 | 1997-11-25 | Hilti Aktiengeschaft | Device for securing steel reinforcing or prestressing members in an anchorage |
| JPH0996198A (en) * | 1995-09-29 | 1997-04-08 | Shimizu Corp | Ps anchor fixing method and anchor fixing member used in the method |
| KR20090013528A (en) * | 2007-08-02 | 2009-02-05 | 주식회사 스마텍엔지니어링 | The prestressed tunnel support structure |
| CN102392443A (en) * | 2011-10-19 | 2012-03-28 | 山东科技大学 | Construction technique for high-slope pressure-dispersed pre-stressed anchor cable |
| CN103321663A (en) * | 2013-02-28 | 2013-09-25 | 新汶矿业集团有限责任公司 | Roadway baseboard anchoring and top pouring type pre-stressed anchor cable strengthening device and construction method |
| CN107905260A (en) * | 2017-12-01 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | A kind of prestressed anchor Cable Structure suitable for crane beam on rock wall for underground power house position |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295936A (en) * | 2019-06-18 | 2019-10-01 | 山东科技大学 | A kind of shaftless screw chip suppression tube expansion and its application method |
| CN110295936B (en) * | 2019-06-18 | 2020-11-03 | 山东科技大学 | Shaftless spiral sheet type expansion restraining pipe and using method thereof |
| CN110617080A (en) * | 2019-09-10 | 2019-12-27 | 太原理工大学 | Narrow coal pillar anchor cable wall type reinforcing device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109252881B (en) | 2023-08-29 |
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