CN203685214U - Supporting structure for underground cave - Google Patents
Supporting structure for underground cave Download PDFInfo
- Publication number
- CN203685214U CN203685214U CN201320895723.3U CN201320895723U CN203685214U CN 203685214 U CN203685214 U CN 203685214U CN 201320895723 U CN201320895723 U CN 201320895723U CN 203685214 U CN203685214 U CN 203685214U
- Authority
- CN
- China
- Prior art keywords
- steel
- supporting piece
- construction
- supporting
- concrete supporting
- 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 supporting structure for an underground cave. The supporting structure comprises a primary concrete supporting piece and a secondary concrete supporting piece, wherein the primary concrete supporting piece is arranged on the inner surface of a construction roadway in a sleeved and cased mode, and the secondary concrete supporting piece is arranged on the inner surface of the primary concrete supporting piece in a sleeved and cased mode. A plurality of steel arched frames arranged at intervals are arranged between the inner surface of the construction roadway and the primary concrete supporting piece in a cased mode and are connected together at intervals in the longitudinal direction through multiple pieces of round steel. According to the supporting structure, the steel arched frames arranged at intervals are arranged between the inner surface of the construction roadway and the primary concrete supporting piece in a cased mode and are connected firmly in the longitudinal direction through the round steel, the steel arched frames serve as temporary safety protection measures so that it can be ensured that cave construction is normally conducted, an original design route does not need to be changed, and cost is low. The supporting structure is safe, reliable, convenient to construct, easy to obtain, simple in structure and high in safety.
Description
Technical field
The utility model belongs to underground building technical field of construction, specifically, is a kind of supporting and protection structure of underground karst cavity.
Background technology
There is a large amount of solution cavities in building materials limestone mine, and solution cavity is intricate, form utmost point irregularity.The construction method that tradition runs into limestone solution cavity has three kinds substantially, and a kind of is to take the mode hidden, and construction is detoured and walked around solution cavity, but walks around this solution cavity, also has other solution cavities, and tunnel substantial deviation design attitude, even causes and cannot meet design requirement; Be a mode of taking slip casting sealing, this mode expense is high; Also having one is by solution cavity clearancen, adopts steel concrete supporting, and the method safety extreme difference, exists potential safety hazard.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of supporting and protection structure of simple in structure, safe and reliable limestone underground karst cavity is provided, and this infrastructure cost is cheap, safe.
Scheme of the present utility model is achieved in that
A kind of supporting and protection structure of underground karst cavity, be included in a concrete support of construction tunnel inner surface cover arch and overlap the second coagulation soil supporting of encircleing at a concrete support inner surface, between construction tunnel inner surface and a concrete support, cover arch has multiple spaced steel arch framves, between the plurality of steel arch frame, links together by multiple round steel longitudinal separation.
And described steel arch frame adopts No. 20 i iron, the spacing of adjacent steel bow member is 0.5 meter, and described round steel diameter is 30 millimeters.
And the concrete class of a described concrete support is C25.
Advantage of the present utility model and good effect are:
The utility model has multiple spaced steel arch framves by cover arch between construction tunnel inner surface and a concrete support, and be longitudinally connected firmly by some round steel, this steel arch frame is as interim safety prevention measure, ensure normal construction, and do not need to change original design route, and with low cost.The utility model is safe and reliable, easy construction, be easy to realize, simple in structure, safe.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to sectional view (hide second coagulation soil permanent support).
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail.
A kind of supporting and protection structure of underground karst cavity, as shown in Figure 1, paste and set up the setting of multiple intervals the interim safe guarding shed steel arch frame 2 of conduct at the inner surface of construction tunnel 1, and original construction tunnel area of stress concentration is reinforced, this steel arch frame adopts 20# i iron or 28# " U " shaped steel, the spacing of adjacent steel bow member is 0.5 meter, adopts Φ 30mm round steel 5 longitudinal separations to be connected firmly between multiple steel arch framves, and anchor net is installed in steel arch frame outside if desired.Inwall at steel arch frame is laid a concrete support 3, and the parameter of this concrete support is C25, horizontal bar Φ 12mm round steel, and perpendicular muscle Φ 18mm screw-thread steel, net degree 200mm200mm, concrete thickness will be considered minimum net section, but minimum is not less than 0.3 meter.
When the length of a steel concrete supporting reaches 3-5 rice, need to carry out once soft base 6 and process, generally adopt C25 double layer reinforced concrete shop fixtures, double steel bar adopts anchor pole to be connected with two walls, long 1.8 meters of anchor pole, 0.5 meter of spacing, concrete thickness is not less than 0.4 meter.
Operation as stated above, until cross after 5 meters, solution cavity, one time concrete support temporarily stops.
To observing 7-10 days with last concrete support, the deformation data of observation is analyzed.According to analysis result, carry out the second coagulation soil permanent support 4 of secondary cover arch at the inwall of a concrete support and lay.
The utility model has multiple spaced steel arch framves by cover arch between construction tunnel inner surface and a concrete support, and be longitudinally connected firmly by some round steel, this steel arch frame is as interim safety prevention measure, ensure normal construction, and do not need to change original design route, and with low cost.The utility model is safe and reliable, easy construction, be easy to realize, simple in structure, safe.
It is emphasized that; embodiment described in the utility model is illustrative; instead of determinate; therefore the utility model comprises and is not limited to the embodiment described in detailed description of the invention; every other embodiments that drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope that the utility model is protected equally.
Claims (3)
1. the supporting and protection structure of a underground karst cavity, be included in a concrete support of construction tunnel inner surface cover arch and overlap the second coagulation soil supporting of encircleing at a concrete support inner surface, it is characterized in that: between construction tunnel inner surface and a concrete support, cover arch has multiple spaced steel arch framves, between the plurality of steel arch frame, links together by multiple round steel longitudinal separation.
2. the supporting and protection structure of underground karst cavity according to claim 1, is characterized in that: described steel arch frame adopts No. 20 i iron, and the spacing of adjacent steel bow member is 0.5 meter, and described round steel diameter is 30 millimeters.
3. the supporting and protection structure of underground karst cavity according to claim 1, is characterized in that: the concrete class of a described concrete support is C25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895723.3U CN203685214U (en) | 2013-12-31 | 2013-12-31 | Supporting structure for underground cave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895723.3U CN203685214U (en) | 2013-12-31 | 2013-12-31 | Supporting structure for underground cave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685214U true CN203685214U (en) | 2014-07-02 |
Family
ID=51007132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320895723.3U Expired - Fee Related CN203685214U (en) | 2013-12-31 | 2013-12-31 | Supporting structure for underground cave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879136A (en) * | 2015-04-17 | 2015-09-02 | 山东大学 | Supporting and protecting system for tunnel penetrating weak and broken formations of karst cave and mounting method of supporting and protecting system |
-
2013
- 2013-12-31 CN CN201320895723.3U patent/CN203685214U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879136A (en) * | 2015-04-17 | 2015-09-02 | 山东大学 | Supporting and protecting system for tunnel penetrating weak and broken formations of karst cave and mounting method of supporting and protecting system |
| CN104879136B (en) * | 2015-04-17 | 2017-05-31 | 山东大学 | Weak broken formation tunnel support system and installation method for passing through solution cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102383806B (en) | Construction technology for allowing tunnel to pass through ultra-large karst cave | |
| CN204212167U (en) | Lowering level of ground water structure | |
| Hong-gui et al. | Differential settlement of metro tunnels and its zonal control in soft deposits | |
| CN203685214U (en) | Supporting structure for underground cave | |
| CN204492831U (en) | Metro built by mining method adit construction component | |
| CN202731938U (en) | Super-soft rock stratum coal bunker well wall ring beam support device | |
| CN104120649A (en) | End-girder-free V-shaped rigid-frame bridge with bridgehead anti-thrust protection wall | |
| Jing et al. | Effect of construction of deep excavation in Hangzhou silty sand on adjacentmetro tunnels and stations | |
| CN203689815U (en) | Teaching simulation body for tunnel micro-step method technology | |
| CN207553137U (en) | Low-angle dip rock stratum long-span underground power house crown anchor structure | |
| CN204825934U (en) | Side slope drainage system | |
| CN103821536B (en) | Location, landslide method for tunnel construction | |
| CN204530739U (en) | A kind of super shallow-buried tunnel and it is also built the construction structure of building | |
| CN204283440U (en) | Shallow-depth-excavation tunnel supporting status monitoring structure | |
| CN204517304U (en) | A kind of high-tension cable portable push pipe for limited road environment | |
| CN204326072U (en) | A kind of anti-float anchor rod node | |
| CN204532362U (en) | A kind of UNDERGROUND STRUCTURES | |
| CN104631492B (en) | A kind of installation method of underground arch top board | |
| Zhou et al. | Study on anti-buoyancy design and engineering measures for gas pipeline in cross-river shield tunnel | |
| CN204356707U (en) | A kind of arch T beam shed hole structure | |
| CN202788888U (en) | Slip-casting anchor cable suitable for underground engineering reinforcement | |
| CN205445076U (en) | Air -raid basement's protective unit spacer | |
| CN205062822U (en) | Steel structure for be suitable for construction of opencut wedge slip gap repair | |
| Xue et al. | Analysis of the mechanical property of collapse in shallow-buried loess tunnel under unsymmetrical pressure | |
| CN203795417U (en) | Auxiliary steel bar conveying device for cast-in-place piles in underground tunnel |
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: 20140702 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |