CN203867584U - Large diameter underground cavity dome supporting strengthening structure - Google Patents
Large diameter underground cavity dome supporting strengthening structure Download PDFInfo
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- CN203867584U CN203867584U CN201420240735.7U CN201420240735U CN203867584U CN 203867584 U CN203867584 U CN 203867584U CN 201420240735 U CN201420240735 U CN 201420240735U CN 203867584 U CN203867584 U CN 203867584U
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Abstract
The utility model relates to a large diameter underground cavity dome supporting strengthening structure, and aims to provide the large diameter underground cavity dome supporting strengthening structure which is low in construction cost and short in construction period, and not only can ensure the formation of 'pressure-bearing arch', but also can overcome the defect of anchor cable radiation in construction, and achieve the purposes of being convenient to construct and satisfying the requirement of stability of surrounding rock. The technical scheme is that the large diameter underground cavity dome supporting strengthening structure is characterized by comprising an oppositely penetrating anchor cable construction passageway positioned above an underground cavity dome and excavated before the dome, wherein a group of oppositely penetrating pre-stressed anchor cables is arranged between the construction passageway and the dome; plane sections of the oppositely penetrating pre-stressed anchor cables are arranged by taking the top of the dome as the center in a symmetrical radial manner. The large diameter underground cavity dome supporting strengthening structure is suitable for cylindrical underground cavity dome excavation supporting design in industries such as civil engineering, water and electricity, mining, energy reservation, scientific research and the like.
Description
Technical field
The utility model relates to a kind of major diameter underground chamber dome support reinforcement structure, is mainly applicable to building, water power, mining, can stores up, the industry underground construction cylindrical shape underground chamber dome excavation supporting design such as scientific research.
Background technology
In building, water power, mining, can store up, the industry such as scientific research, cylindrical shape underground chamber structure is due to its design feature, surrounding rock stability is better, applies to more and more in all kinds of engineerings.Along with social development, project scale is increasing, cylindrical shape underground chamber physical dimension also progressively increases (the current underground columnar structured diameter 50m ~ 60m of maximum in the world), and its dome surrounding rock stability often becomes the deciding factor that affects the operation of engineering long-term security.
The supporting means that underground construction is taked generally include spray (steel fibre) concrete, (prestressing force) anchor pole, reinforcing bar arch rib, reinforced mesh, prestress anchorage cable etc.Wherein cylindrical shape underground chamber dome arrangement prestress anchor cable is to solve one of very effective means of dome adjoining rock stability problem.From the situation of other engineering construction, there is constructional difficulties, long in time limit, high cost feature in radiation anchor cable, in some situation, can not meet adjoining rock stability requirement.Because radiation anchor cable exists some shortcomings in construction, but it is subject to force direction can ensure the formation of cylindrical shape underground chamber dome " pressure-bearing arch ", therefore cylindrical shape underground chamber dome anchor cable layout pattern is optimized to design very necessary.
Utility model content
Technical problem to be solved in the utility model is: provide for the problem of above-mentioned existence that a kind of construction costs is low, the major diameter underground chamber dome support reinforcement structure of short construction period, can ensure the formation of " pressure-bearing arch ", the shortcoming that can overcome again radiation anchor cable in construction, reaches easy construction, meets the object that surrounding rock stability requires.
The technical solution adopted in the utility model is: major diameter underground chamber dome support reinforcement structure, it is characterized in that: it comprises and being positioned at directly over underground chamber dome and prior to the two-ended cables construction passage of dome excavation, between this construction passage and dome, arrange that one group to wearing prestress anchorage cable, each to wear prestress anchorage cable flat cutting face centered by the summit of dome, be symmetrical radial layout.
Described two-ended cables construction passage is " king " font, and the summit of its central point and dome is positioned on same vertical curve.
In described two-ended cables construction passage, be positioned at both sides and the two passes that is parallel to each other in edge's bending to the inside of dome.
The beneficial effect the utlity model has is: 1, the utility model arranges two-ended cables construction passage directly over dome, and between this construction passage and dome, arrange that one group to wearing prestress anchorage cable, each to wear prestress anchorage cable flat cutting face centered by the summit of dome, be symmetrical radial layout, both ensured the formation of " pressure-bearing arch ", meet adjoining rock stability condition, reduce again difficulty of construction, shortened the duration, reduced cost simultaneously.2, before dome excavation, implement the excavation of two-ended cables construction passage, can be for verifying dome geological conditions, set in advance observation instrument, the anchor cable of constructing in time etc. provides feasibility.
Brief description of the drawings
Fig. 1 is plan view of the present utility model.
Fig. 2 is the 1-1 sectional drawing of Fig. 1.
Fig. 3 is the 2-2 sectional drawing of Fig. 1.
Fig. 4 is the 3-3 sectional drawing of Fig. 1.
Fig. 5 is the 4-4 sectional drawing of Fig. 1.
Fig. 6 is the 5-5 sectional drawing of Fig. 1.
Detailed description of the invention
As shown in Fig. 1-Fig. 6, the present embodiment comprises the two-ended cables construction passage 2 being positioned at directly over underground chamber dome 1, between this construction passage and dome 1, is furnished with one group to wearing prestress anchorage cable 3 according to requirement of engineering.In this example, described two-ended cables construction passage 2 is " king " font, and is positioned at two passages that are parallel to each other of both sides in edge's bending to the inside of dome 1; The described two-ended cables construction central point of passage 2 and the summit of dome 1 are positioned on same vertical curve.Each to wear prestress anchorage cable 3 flat cutting faces centered by the summit of dome 1, be symmetrical radial layout, both ensured the formation of " pressure-bearing arch ", met adjoining rock stability condition, simultaneously reduced again difficulty of construction, shortened the duration, reduced cost.
Before dome 1 excavation, implement the excavation of two-ended cables construction passage 2, can be for verifying dome 1 geological conditions, set in advance observation instrument, the anchor cable of constructing in time etc. provides feasibility.
The present embodiment proposes improvement project on the basis of summing up other underground construction dome construction prestressed cable, and adopts numerical analysis method to check its supporting effect.Numerical computations shows, two-ended cables supporting effect and radiation anchor cable that this programme is arranged are identical, meet adjoining rock stability condition, greatly reduce difficulty of construction simultaneously, have shortened the duration, have reduced cost.
Claims (3)
1. a major diameter underground chamber dome support reinforcement structure, it is characterized in that: it comprises and being positioned at directly over underground chamber dome (1) and prior to the two-ended cables construction passage (2) of dome (1) excavation, between this construction passage and dome (1), arrange that one group to wearing prestress anchorage cable (3), each to wear prestress anchorage cable (3) flat cutting face centered by the summit of dome (1), be symmetrical radial layout.
2. major diameter underground chamber dome support reinforcement structure according to claim 1, is characterized in that: described two-ended cables construction passage (2) is " king " font, and the summit of its central point and dome (1) is positioned on same vertical curve.
3. major diameter underground chamber dome support reinforcement structure according to claim 2, is characterized in that: described two-ended cables is constructed in passage (2), is positioned at the two passes of both sides in edge's bending to the inside of dome (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420240735.7U CN203867584U (en) | 2014-05-13 | 2014-05-13 | Large diameter underground cavity dome supporting strengthening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420240735.7U CN203867584U (en) | 2014-05-13 | 2014-05-13 | Large diameter underground cavity dome supporting strengthening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867584U true CN203867584U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420240735.7U Active CN203867584U (en) | 2014-05-13 | 2014-05-13 | Large diameter underground cavity dome supporting strengthening structure |
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| CN (1) | CN203867584U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806252A (en) * | 2015-04-28 | 2015-07-29 | 中铁工程设计咨询集团有限公司 | Underground dome excavation construction arrangement structure and excavation method |
| CN108547647A (en) * | 2018-06-22 | 2018-09-18 | 四川大学 | A kind of underground chamber high strength support structure |
| CN109184761A (en) * | 2018-10-29 | 2019-01-11 | 河南大有能源股份有限公司耿村煤矿 | A method of solving two sides rock mass deformation enhances country rock globality |
-
2014
- 2014-05-13 CN CN201420240735.7U patent/CN203867584U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806252A (en) * | 2015-04-28 | 2015-07-29 | 中铁工程设计咨询集团有限公司 | Underground dome excavation construction arrangement structure and excavation method |
| CN108547647A (en) * | 2018-06-22 | 2018-09-18 | 四川大学 | A kind of underground chamber high strength support structure |
| CN109184761A (en) * | 2018-10-29 | 2019-01-11 | 河南大有能源股份有限公司耿村煤矿 | A method of solving two sides rock mass deformation enhances country rock globality |
| CN109184761B (en) * | 2018-10-29 | 2020-03-17 | 河南大有能源股份有限公司耿村煤矿 | Method for solving problem of reinforcing integrity of surrounding rock by deformation of two rock masses |
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