CN209722685U - Large-scale solution cavity, underground river span of arch structure in a kind of tunnel - Google Patents
Large-scale solution cavity, underground river span of arch structure in a kind of tunnel Download PDFInfo
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- CN209722685U CN209722685U CN201920428778.0U CN201920428778U CN209722685U CN 209722685 U CN209722685 U CN 209722685U CN 201920428778 U CN201920428778 U CN 201920428778U CN 209722685 U CN209722685 U CN 209722685U
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- temporary support
- tunnel
- fashioned iron
- solution cavity
- span
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Abstract
The utility model belongs to tunnel across solution cavity technical field of construction, disclose large-scale solution cavity in a kind of tunnel, underground river span of arch structure, including complete basement rock, skewback, main arch ring, backfill layer, the protection of hole wall and fashioned iron temporary support, skewback is located at solution cavity, the top of the complete basement rock in underground river two sides, solution cavity, wall protection in hole is carried out around underground river, main arch ring is supported on the skewback of two sides, it is backfill layer between span of arch structure and top tunnel structure, constructing tunnel fashioned iron temporary support is divided into vertical fashioned iron temporary support and longitudinal fashioned iron temporary support, longitudinal fashioned iron temporary support is located at the lower section of tunnel structure, just branch rigid frame is fallen in longitudinal fashioned iron temporary support in tunnel, longitudinal fashioned iron temporary support to solution cavity bottom uses vertical fashioned iron temporary support.The utility model structure is simple, and stress is clear, span of arch structure have the advantages that span ability it is larger, it is material it is adaptable, durability is good.
Description
Technical field
The utility model belongs to tunnel across solution cavity technical field of construction, is related to large-scale solution cavity, underground river arch in a kind of tunnel
Across structure.
Background technique
During the tunnel construction of mountain terrain, the case where passing through solution cavity, molten chamber and underground river is frequently encountered, backfill is generallyd use
The methods of slip casting, bridge leap processing.Backfill slip casting and use rubble, the soil body and Concrete Filled, be usually used in handling small-sized solution cavity,
Molten chamber；Large-scale solution cavity, underground river space are larger, and there are underground water, to avoid largely backfilling and convenient for draining, generally using bridge
It is crossed over, but bridge construction difficulty is larger in large-scale solution cavity, underground river.
Utility model content
In view of this, the purpose of this utility model is to provide solution cavities, underground river span of arch structure large-scale in a kind of tunnel.
In order to achieve the above objectives, the utility model provides the following technical solutions:
Large-scale solution cavity, underground river span of arch structure in a kind of tunnel, including complete basement rock, skewback, main arch ring, backfill layer, hole wall
Protection and fashioned iron temporary support, skewback are located at the top of solution cavity, the complete basement rock in underground river two sides, carry out hole around solution cavity, underground river
Wall protection, main arch ring are supported on the skewback of two sides, are backfill layer, constructing tunnel fashioned iron between span of arch structure and top tunnel structure
Temporary support is divided into vertical fashioned iron temporary support and longitudinal fashioned iron temporary support, longitudinal fashioned iron temporary support are located at tunnel structure
Lower section, just branch rigid frame is fallen in longitudinal fashioned iron temporary support in tunnel, and longitudinal fashioned iron temporary support to solution cavity bottom uses vertical fashioned iron
Temporary support.
Further, Concrete Filled is used in backfill layer.
Further, hole wall protection is protected using Bolt net and jet.
Further, skewback is poured using dry microdilatancy early strength concrete.
The utility model has the beneficial effects that:
(1) the utility model structure is simple, and stress is clear, span of arch structure larger, material adaptability with span ability
By force, the good advantage of durability；
(2) the utility model span of arch lower space is big, and drainage performance is good, and can play a protective role to groundwater environment；
(3) the utility model can avoid using span of arch structure because of waste of material caused by increasing girder, and guarantee that structure is pacified
It is complete reliable；For project amount can be greatly reduced across large-scale solution cavity, underground river, avoid that solution cavity, underground river are largely backfilled and are convenient for
Draining, accelerates construction progress, economic benefit is obvious.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book is achieved and obtained.
Detailed description of the invention
It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer
It is novel to be preferably described in detail, in which:
Fig. 1 is the structural front view of the utility model embodiment；
Fig. 2 is the structural side view of the utility model embodiment；
Fig. 3 is the span of arch structure chart of the utility model embodiment；
Fig. 4 is the construction flow chart of the utility model embodiment.
Description of symbols:
1, complete basement rock；2, skewback；3, main arch ring；4, layer is backfilled；5, hole wall protects；6, fashioned iron temporary support；6-1, it indulges
To fashioned iron temporary support；6-2, vertical fashioned iron temporary support；7, tunnel structure.
Specific embodiment
Illustrate the embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages and effect of the utility model easily.The utility model can also be by addition
Different specific embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints and answer
With carrying out various modifications or alterations under the spirit without departing from the utility model.It should be noted that institute in following embodiment
The diagram of offer only illustrates the basic conception of the utility model in a schematic way, in the absence of conflict, following embodiment and
Feature in embodiment can be combined with each other.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of utility model；In order to better illustrate the utility model embodiment, the certain components of attached drawing have omission, amplification or contracting
It is small, do not represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may in attached drawing
Omission will be understood by.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment；It is practical at this
In novel description, it is to be understood that if having the instructions such as term " on ", "lower", "left", "right", "front", "rear" orientation or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
The terms describing the positional relationship in the drawings are only for illustration for this, should not be understood as limiting the present invention, for
For those skilled in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figures 1 to 4, large-scale solution cavity, underground river span of arch structure in a kind of tunnel, including complete basement rock 1, skewback 2, main arch
Circle 3, backfill layer 4, hole wall protection 5 and fashioned iron temporary support 6.Skewback 2 is located at the top of solution cavity, the complete basement rock 1 in underground river two sides, molten
Hole wall protection 5 is carried out around hole, underground river, main arch ring 3 is supported on two sides skewback 2, span of arch structure and top tunnel structure 7 it
Between for backfill layer 4, backfill layer 4 in use Concrete Filled.Constructing tunnel fashioned iron temporary support 6 is divided for vertical fashioned iron temporary support
6-2 and longitudinal fashioned iron temporary support 6-1, longitudinal fashioned iron temporary support 6-1 are located at the lower section of tunnel structure 7, the first branch rigid frame in tunnel
It falls on longitudinal fashioned iron temporary support 6-1, longitudinal fashioned iron temporary support 6-1 to solution cavity bottom uses vertical fashioned iron temporary support 6-2.
The construction method of the utility model:
(1) technique is chosen: according to solution cavity size and type, choosing suitable structure type, material type specification；In conjunction with existing
Field investigation, formulates detailed construction scheme, draws detailed construction figure；
(2) it excavates and hole wall protects 5: excavating free face and solution cavity hole top, hole wall carries out hole wall protection 5, and hole wall protects 5 to adopt
It is protected with Bolt net and jet；
(3) fashioned iron temporary support 6: just branch rigid frame is fallen on longitudinal fashioned iron temporary support 6-1 in tunnel, and longitudinal fashioned iron temporarily props up
It supports 6-1 and uses vertical fashioned iron temporary support 6-2 to solution cavity bottom, longitudinal, vertical and reinforcement steelframe connection will securely, type steel support bottom
Portion enters rock 0.5-1m, forbids bottom hanging.
(4) skewback 2 is constructed: skewback 2 is excavated is constructed using static blasting, micro- using dry after 2 excavation of foundation pit of skewback is good
Expansion early strength concrete pours skewback 2；
(5) apply main arch ring 3: after the completion of skewback 2 is constructed, applying main arch ring 3, main arch ring 3 according to solution cavity, underground river depth and
Width can be used the modes such as precast assembly, support cast-in-place and construct, and after the completion of main arch ring 3 applies, the empty slag in 3 lower section of main arch ring needs to clear up
Completely, in order to avoid blocking original water passage；
(6) backfill layer 4 is constructed: the gap between 3 structure upper of main arch ring and the tunnel inverted arch of tunnel structure 7, using mixed
Solidifying earthen backfill is simultaneously levelling；
(7) tunnel structure 7 is constructed: carrying out tunnel lining structure construction.
To prevent solution cavity, the unexpected water burst of underground river water inlet, waterwall, the reserved water outlet in bottom is arranged in construction period water inlet
Mouthful, water outlet status can be monitored at any time.
The utility model is directed to the deficiency of traditional technology, using solution cavity span of arch structure large-scale in a kind of tunnel and construction party
Method is asked for the medium-and-large-sized solution cavity of the prior art, underground underground river tunnel across difficulty of construction is big, construction speed is slow and construction cost is high
Topic, the utility model can make full use of that arch bridge span ability is larger, feature adaptable, durability is good of material, thus
Difficulty of construction is reduced, reduces construction cost, and span of arch lower space is big, drainage performance is good.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of the claims of the utility model.
Claims (4)
1. large-scale solution cavity, underground river span of arch structure in a kind of tunnel, it is characterised in that: including complete basement rock (1), skewback (2), main arch
Circle (3), backfill layer (4), hole wall protection (5) and fashioned iron temporary support (6), skewback (2) are located at solution cavity, the complete basement rock in underground river two sides
(1) top carries out hole wall protection (5) around solution cavity, underground river, and main arch ring (3) is supported on two sides skewback (2), span of arch knot
It is backfill layer (4) between structure and top tunnel structure (7), constructing tunnel fashioned iron temporary support (6) is divided into vertical fashioned iron and temporarily props up
It supports (6-2) and longitudinal fashioned iron temporary support (6-1), longitudinal fashioned iron temporary support (6-1) is located at the lower section of tunnel structure (7), tunnel
Just branch rigid frame is fallen on longitudinal fashioned iron temporary support (6-1) in road, and longitudinal fashioned iron temporary support (6-1) to solution cavity bottom uses vertical type
Steel temporary support (6-2).
2. large-scale solution cavity, underground river span of arch structure in tunnel according to claim 1, it is characterised in that: adopted in backfill layer (4)
Use Concrete Filled.
3. large-scale solution cavity, underground river span of arch structure in tunnel according to claim 1, it is characterised in that: hole wall protection (5) is adopted
It is protected with Bolt net and jet.
4. large-scale solution cavity, underground river span of arch structure in tunnel according to claim 1, it is characterised in that: skewback (2) is using dry
Rigid microdilatancy early strength concrete pours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428778.0U CN209722685U (en) | 2019-03-29 | 2019-03-29 | Large-scale solution cavity, underground river span of arch structure in a kind of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428778.0U CN209722685U (en) | 2019-03-29 | 2019-03-29 | Large-scale solution cavity, underground river span of arch structure in a kind of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209722685U true CN209722685U (en) | 2019-12-03 |
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ID=68689694
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920428778.0U Active CN209722685U (en) | 2019-03-29 | 2019-03-29 | Large-scale solution cavity, underground river span of arch structure in a kind of tunnel |
Country Status (1)
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| CN (1) | CN209722685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826081A (en) * | 2019-03-29 | 2019-05-31 | 中交路桥建设有限公司 | Large-scale solution cavity, underground river span of arch structure and construction method in a kind of tunnel |
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2019
- 2019-03-29 CN CN201920428778.0U patent/CN209722685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826081A (en) * | 2019-03-29 | 2019-05-31 | 中交路桥建设有限公司 | Large-scale solution cavity, underground river span of arch structure and construction method in a kind of tunnel |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201016 Address after: 101117 Beijing City Lucheng town Tongzhou District Tong Hu Street 8 No. 1 room 001 Patentee after: ROAD & BRIDGE INTERNATIONAL Co.,Ltd. Patentee after: GUIYANG SURVEY DESIGN AND RESEARCH INSTITUTE Co.,Ltd. OF CREEC Patentee after: CHINA COMMUNICATION SOUTH ROAD & BRIDGE Co.,Ltd. Address before: 101117 Beijing City Lucheng town Tongzhou District Tong Hu Street 8 No. 1 room 001 Patentee before: ROAD & BRIDGE INTERNATIONAL Co.,Ltd. Patentee before: CHINA COMMUNICATION SOUTH ROAD & BRIDGE Co.,Ltd. |