CN205387940U - Combined type soft rock roadway support system - Google Patents
Combined type soft rock roadway support system Download PDFInfo
- Publication number
- CN205387940U CN205387940U CN201620229210.2U CN201620229210U CN205387940U CN 205387940 U CN205387940 U CN 205387940U CN 201620229210 U CN201620229210 U CN 201620229210U CN 205387940 U CN205387940 U CN 205387940U
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- anchor
- combined type
- support system
- soft rock
- supporting
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Abstract
The patent of the utility model relates to a combined type soft rock roadway support system. The system of should strutting mainly is divided into anchor net and spouts the secondary contractibility u shaped steel anchor net spouting of strutting with the later stage and strut. The back is ended in the tunnel, and anchor bolt support accessible time forms effective control to the country rock, and the rubber granule concrete that sprays had both permitted the country rock to produce certain deformation, reached the purpose of release concentrated stress, can prevent again that collapsing of country rock of group from falling to form effective control action in the later stage, for later stage anchor notes reinforcement creation condition. Secondary supporting struts for the spouting of contractibility u shaped steel anchor net, utilizes the interior slip casting stock of installing to carry out full section slip casting among the secondary supporting, will become whole than the broken country rock gluing in deep through slip casting to end anchor stock during the section of will making perfect is strutted turns into the total length anchor, forms reliable anchor and annotates supporting construction. Strut the combined type of formation for twice and strut the supporting intensity that the system can effectively improve a watch box, guaranteed the stability in tunnel. This system has good engineering application and worth.
Description
Technical field
This utility model belongs to underground engineering support technical field, is specifically related to a kind of combined type soft rock roadway support system, and this structure can be widely applied to soft rock roadway support.
Background technology
Along with mining depth is gradually increased, the technical problem faced is also all the more complicated and changeable.For Deep Soft Rock tunnel, country rock of soft rock roadway pressure has to press rapidly, and surrouding rock deformation is very big, and change is pressed simultaneously and continued to flow to tunnel surrounding, and to characteristics such as the extremely sensitivities such as water, disturbance.It is therefore necessary to take correct supporting for these characteristics.Soft rock roadway support must comply with following principle, first selects different laneway support methods according to different pressures type, and next improves coffer mechanics character and gives full play to self, then selects the suitable secondary supporting time.For Soft Rock Drifts At Coal supporting, both at home and abroad after the research of decades and practice, define the technology such as shotcrete, anchor note, Bolt net and jet, shotcrete rack, steelframe supporting series, armored concrete supporting series, the warm and sunny supporting series of work stone, grouting and reinforcing series and prestressing anchor support series.Conventional method for protecting support can not play effective effect.Supporting is improper will result in serious destruction.Therefore it is necessary to propose support pattern targetedly according to concrete situation, embody the support characteristic in Deep Soft Rock tunnel.
Utility model content
The novel purpose of this use is in that to provide a kind of combined type soft rock roadway support system, it is mainly used in burying the supporting of the soft-rock tunnel deep, surrouding rock deformation is big, realized the common carrying of support system and country rock by combined type supporting, be effectively increased the bearing capacity of support system.
A kind of combined type soft rock roadway support system; it is by the high-strength prestressed anchor pole at initial stage; gunite concrete; bar-mat reinforcement; anchor cable; grouted anchor bar; floor grouting anchor pole, contractibility u-shaped steel and arch composition of the anti-end, it is characterised in that after tunnel is ended; suspension roof support can the deformation of timely and effective control country rock; and the rubber grain concrete sprayed both had allowed country rock to produce certain deformation, reach the purpose of release concentrated stress, being caving of top side country rock can be prevented again; and form effective control action in the later stage, create conditions for later stage anchor pouring reinforcement.Secondary supporting is the note supporting of contractibility u-shaped steel Bolt net and jet, the internal grouting blot installed in secondary supporting is utilized to carry out Full-face pouring, by slip casting, deeper part breaking surrounding rock is cemented to entirety, and the end-fixed bolter in tunneling boring supporting is converted into full length fastening, form reliable bolt-grouting support structure.
As improvement, grouted anchor bar specification is Φ 22mm × 2400mm, adopts Φ 22mm seamless steel pipe rolled thread to make.
As improvement, bar-mat reinforcement adopts the round steel welding of Φ 6.5, and specification is 900 × 1700mm.
As improvement, contractibility u-shaped steel height 124 is mm, and thickness is 16mm.
As improvement, arch ratio of rise to span of the anti-end is 1:6, and arch thickness is 400～450mm, joins double layer bar.
The beneficial effects of the utility model are: during initial support; injection rubber grain concrete not only allows for country rock and produces certain deformation, reaches the purpose of release concentrated stress, additionally it is possible to prevent being caving of top side country rock; and form effective control action in the later stage, create conditions for later stage anchor pouring reinforcement.Secondary supporting is the note supporting of u-shaped steel Bolt net and jet, the internal grouting blot installed in secondary supporting is utilized to carry out Full-face pouring, by slip casting, deeper part breaking surrounding rock is cemented to entirety, and the end-fixed bolter in tunneling boring supporting is converted into full length fastening, form reliable bolt-grouting support structure.Combined type system is anti-allows combinations, it is achieved that the effect that country rock and prop carry jointly.
Accompanying drawing explanation
Bolt-mesh-spurting supporting figure of Fig. 1；
Fig. 2 secondary contractibility u-shaped steel+Bolt net and jet note supporting figure.
Accompanying drawing labelling: (1) anchor pole；(2) gunite concrete；(3) bar-mat reinforcement；(4) anchor cable；(5) grouted anchor bar；(6) floor grouting anchor pole；(7) contractibility u-shaped steel；(8) floor grouting anchor pole.
Detailed description of the invention
Referring to Fig. 1, Fig. 2; a kind of combined type soft rock roadway support system; it is by the high-strength prestressed anchor pole 1 at initial stage; gunite concrete 2; bar-mat reinforcement 3; anchor cable 4, grouted anchor bar 5, floor grouting anchor pole 6; u-shaped steel 7 and arch of the anti-end 8 composition; after it is characterized in that tunnel is ended, country rock can be formed effective control by suspension roof support in time, and the rubber grain concrete sprayed both had allowed country rock to produce certain deformation; reach the purpose of release concentrated stress; being caving of top side country rock can be prevented again, and form effective control action in the later stage, create conditions for later stage anchor pouring reinforcement.Secondary supporting is the note supporting of contractibility u-shaped steel Bolt net and jet, the internal grouting blot installed in secondary supporting is utilized to carry out Full-face pouring, by slip casting, deeper part breaking surrounding rock is cemented to entirety, and the end-fixed bolter in tunneling boring supporting is converted into full length fastening, form reliable bolt-grouting support structure.
As improvement, grouted anchor bar specification is Φ 22mm × 2400mm, adopts Φ 22mm seamless steel pipe rolled thread to make.
As improvement, bar-mat reinforcement adopts the round steel welding of Φ 6.5, and specification is 900 × 1700mm.
As improvement, contractibility u-shaped steel height 124 is mm, and thickness is 16mm.
As improvement, arch ratio of rise to span of the anti-end is 1:6, and arch thickness is 400～450mm, joins double layer bar.
Claims (4)
1. a combined type soft rock roadway support system; encircleed (8) by anchor pole (1), gunite concrete (2), bar-mat reinforcement (3), anchor cable (4), grouted anchor bar (5), floor grouting anchor pole (6), contractibility u-shaped steel (7) and the anti-end to form; it is characterized in that: described anchor pole (1) is high-strength prestressed anchor pole; initial support gunite concrete (2) adopts rubber grain concrete, not only allows pressure can also prevent top side from coming off.
2. a kind of combined type soft rock roadway support system according to claim 1, is characterized in that: grouted anchor bar (5) specification is Φ 22mm × 2400mm, adopts Φ 22mm seamless steel pipe rolled thread to make.
3. a kind of combined type soft rock roadway support system according to claim 1, is characterized in that: bar-mat reinforcement (3) adopts the round steel welding of Φ 6.5mm, and specification is 900 × 1700mm.
4. a kind of combined type soft rock roadway support system according to claim 1, is characterized in that: arch (5) ratio of rise to span of the anti-end is 1:6, and arch thickness is 400～450mm, joins double layer bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229210.2U CN205387940U (en) | 2016-03-23 | 2016-03-23 | Combined type soft rock roadway support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229210.2U CN205387940U (en) | 2016-03-23 | 2016-03-23 | Combined type soft rock roadway support system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205387940U true CN205387940U (en) | 2016-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620229210.2U Expired - Fee Related CN205387940U (en) | 2016-03-23 | 2016-03-23 | Combined type soft rock roadway support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205387940U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905820A (en) * | 2017-11-07 | 2018-04-13 | 中国矿业大学 | A kind of sliding structure area pole weak seam roadway surrounding rock rheology control method |
| CN108561153A (en) * | 2018-04-03 | 2018-09-21 | 华北科技学院 | Echelon method for protecting support based on deep great horizontal stress circular tunnel composite bearing body |
| CN109057818A (en) * | 2018-08-14 | 2018-12-21 | 武汉科技大学 | A kind of combining anchor method for protecting support of mine high stress and soft rock mine roadway |
| CN109854285A (en) * | 2019-02-28 | 2019-06-07 | 长沙有色冶金设计研究院有限公司 | A kind of depth vertical supporting construction and construction method |
| CN112664248A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Soft rock water spraying roadway supporting method |
| CN112832802A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | Large-bottom plate supporting structure and method for asymmetric pressure |
| CN113047864A (en) * | 2021-01-22 | 2021-06-29 | 上海应用技术大学 | Deep thick and soft surrounding rock roadway girth fusion supporting method |
| CN113090284A (en) * | 2021-04-14 | 2021-07-09 | 中钢集团马鞍山矿山研究总院股份有限公司 | Roadway support method for soft and broken rock mass of underground mine |
-
2016
- 2016-03-23 CN CN201620229210.2U patent/CN205387940U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905820A (en) * | 2017-11-07 | 2018-04-13 | 中国矿业大学 | A kind of sliding structure area pole weak seam roadway surrounding rock rheology control method |
| CN107905820B (en) * | 2017-11-07 | 2019-07-26 | 中国矿业大学 | A kind of sliding structure area pole weak seam roadway surrounding rock rheology control method |
| CN108561153A (en) * | 2018-04-03 | 2018-09-21 | 华北科技学院 | Echelon method for protecting support based on deep great horizontal stress circular tunnel composite bearing body |
| CN109057818A (en) * | 2018-08-14 | 2018-12-21 | 武汉科技大学 | A kind of combining anchor method for protecting support of mine high stress and soft rock mine roadway |
| CN109057818B (en) * | 2018-08-14 | 2020-01-24 | 武汉科技大学 | Anchor rod combined supporting method for mine high-stress soft rock roadway |
| CN109854285A (en) * | 2019-02-28 | 2019-06-07 | 长沙有色冶金设计研究院有限公司 | A kind of depth vertical supporting construction and construction method |
| CN109854285B (en) * | 2019-02-28 | 2020-10-02 | 长沙有色冶金设计研究院有限公司 | Deep vertical shaft supporting structure and construction method |
| CN112664248A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Soft rock water spraying roadway supporting method |
| CN113047864A (en) * | 2021-01-22 | 2021-06-29 | 上海应用技术大学 | Deep thick and soft surrounding rock roadway girth fusion supporting method |
| CN112832802A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | Large-bottom plate supporting structure and method for asymmetric pressure |
| CN112832802B (en) * | 2021-03-04 | 2022-03-01 | 淮北市平远软岩支护工程技术有限公司 | Large-bottom plate supporting structure and method for asymmetric pressure |
| CN113090284A (en) * | 2021-04-14 | 2021-07-09 | 中钢集团马鞍山矿山研究总院股份有限公司 | Roadway support method for soft and broken rock mass of underground mine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160720 Termination date: 20170323 |